Implement Enum attributes (#306)

- Move some code blocks to be able to remove string cloning
- Use const strings for user-facing REPL messages
- Fix running input code twice when interrupted
- Add notes for future extensions and considerations

.cargo/config.toml

@@ -0,0 +1,16 @@
+# Statically link the vcruntime
+# https://users.rust-lang.org/t/static-vcruntime-distribute-windows-msvc-binaries-without-needing-to-deploy-vcruntime-dll/57599
+[target.'cfg(all(windows, target_env = "msvc"))']
+rustflags = [
+	"-C",
+	"link-args=/DEFAULTLIB:ucrt.lib /DEFAULTLIB:libvcruntime.lib libcmt.lib",
+	"-C",
+	"link-args=/NODEFAULTLIB:libvcruntimed.lib /NODEFAULTLIB:vcruntime.lib /NODEFAULTLIB:vcruntimed.lib",
+	"-C",
+	"link-args=/NODEFAULTLIB:libcmtd.lib /NODEFAULTLIB:msvcrt.lib /NODEFAULTLIB:msvcrtd.lib",
+	"-C",
+	"link-args=/NODEFAULTLIB:libucrt.lib /NODEFAULTLIB:libucrtd.lib /NODEFAULTLIB:ucrtd.lib",
+]
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"

.editorconfig

@@ -5,13 +5,11 @@ charset = utf-8
 end_of_line = lf
 trim_trailing_whitespace = true
 insert_final_newline = true
-indent_style = tab
-indent_size = 4
 
-[*.{json,jsonc,json5]
+[*.{json,jsonc,json5}]
 indent_style = space
 indent_size = 4
 
-[*.{yml,yaml]
+[*.{yml,yaml}]
 indent_style = space
 indent_size = 2

.gitattributes

@@ -1,9 +1,8 @@
 * text=auto
 
-# Temporarily highlight luau as normal lua files
-# until we get native linguist support for Luau
-*.luau linguist-language=Lua
-
 # Ensure all lua files use LF
 *.lua  eol=lf
 *.luau eol=lf
+
+# Ensure all txt files within tests use LF
+tests/**/*.txt eol=lf

.gitbook.yaml

@@ -1,5 +0,0 @@
-root: ./docs
-
-structure:
-    readme: ./README.md
-    summary: ./SUMMARY.md

.github/workflows/ci.yaml

@@ -2,37 +2,100 @@ name: CI
 
 on:
   push:
+  pull_request:
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash
 
 jobs:
-  ci:
-    name: CI
-    runs-on: ubuntu-latest
 
+  fmt:
+    name: Check formatting
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+
+      - name: Install Tooling
+        uses: CompeyDev/setup-rokit@v0.1.2
+
+      - name: Check Formatting
+        run: just fmt-check
+
+  analyze:
+    needs: ["fmt"]
+    name: Analyze and lint Luau files
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Tooling
+        uses: CompeyDev/setup-rokit@v0.1.2
+
+      - name: Analyze
+        run: just analyze
+
+  ci:
+    needs: ["fmt"]
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: Windows x86_64
+            runner-os: windows-latest
+            cargo-target: x86_64-pc-windows-msvc
+
+          - name: Linux x86_64
+            runner-os: ubuntu-latest
+            cargo-target: x86_64-unknown-linux-gnu
+
+          - name: macOS x86_64
+            runner-os: macos-13
+            cargo-target: x86_64-apple-darwin
+
+          - name: macOS aarch64
+            runner-os: macos-14
+            cargo-target: aarch64-apple-darwin
+
+    name: CI - ${{ matrix.name }}
+    runs-on: ${{ matrix.runner-os }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
         with:
           submodules: true
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with:
-          components: rustfmt, clippy
-
-      - name: Install project tools
-        uses: ok-nick/setup-aftman@v0.3.0
-
-      - name: Rustfmt
-        run: cargo fmt -- --check
+          components: clippy
+          targets: ${{ matrix.cargo-target }}
 
       - name: Build
-        run: cargo build --locked
+        run: |
+          cargo build \
+          --workspace \
+          --locked --all-features \
+          --target ${{ matrix.cargo-target }}
 
-      - name: Clippy
-        run: cargo clippy
+      - name: Lint
+        run: |
+          cargo clippy \
+          --workspace \
+          --locked --all-features \
+          --target ${{ matrix.cargo-target }}
 
-      - name: Test - Lune
-        run: just test
-
-      - name: Test - CLI
-        run: just test-cli
+      - name: Test
+        run: |
+          cargo test \
+          --lib --workspace \
+          --locked --all-features \
+          --target ${{ matrix.cargo-target }}

.github/workflows/gitbook.yaml

@@ -1,29 +0,0 @@
-name: Gitbook
-
-on:
-  push:
-
-jobs:
-  gitbook:
-    name: Gitbook
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-        with:
-          submodules: true
-
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          components: rustfmt, clippy
-
-      - name: Install project tools
-        uses: ok-nick/setup-aftman@v0.3.0
-
-      - name: Generate Gitbook
-        run: just generate-gitbook
-
-      - name: Publish Gitbook
-        run: just publish-gitbook

.github/workflows/publish.yaml

@@ -1,24 +0,0 @@
-name: Publish
-
-on:
-  push:
-    branches:
-      - "main"
-  workflow_dispatch:
-
-jobs:
-  publish:
-    name: Publish
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Publish to crates.io
-        uses: katyo/publish-crates@v2
-        with:
-          registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
-          ignore-unpublished-changes: true

.github/workflows/release.yaml

@@ -6,138 +6,153 @@ on:
 permissions:
   contents: write
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
-  create-release:
-    name: Create release
+  init:
+    name: Init
     runs-on: ubuntu-latest
     outputs:
-      manifest_version: ${{ steps.get_version.outputs.value }}
-      upload_url: ${{ steps.create_release.outputs.upload_url }}
+      version: ${{ steps.get_version.outputs.value }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Get version from manifest
-        uses: SebRollen/toml-action@0ad94c4a52c402aaa76e14e8a43551163b6cedf9
+        uses: SebRollen/toml-action@v1.2.0
         id: get_version
         with:
-          file: Cargo.toml
-          field: workspace.package.version
+          file: crates/lune/Cargo.toml
+          field: package.version
 
-      - name: Create release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: v${{ steps.get_version.outputs.value }}
-          release_name: ${{ steps.get_version.outputs.value }}
-          draft: true
+  # dry-run:
+  #   name: Dry-run
+  #   needs: ["init"]
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - name: Checkout repository
+  #       uses: actions/checkout@v4
 
-  assets:
-    needs: ["create-release"]
-    strategy:
-      matrix:
-        include:
-          - name: Selene type definitions
-            cargo-args: "--generate-selene-types"
-            file-name: "lune.yml"
-            file-type: "application/x-yaml"
-
-          - name: Luau type definitions
-            cargo-args: "--generate-luau-types"
-            file-name: "luneTypes.d.luau"
-            file-type: "application/x-luau"
-
-          - name: Luau LSP documentation
-            cargo-args: "--generate-docs-file"
-            file-name: "luneDocs.json"
-            file-type: "application/json"
-
-    name: Generate - ${{ matrix.name }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Generate file
-        run: cargo run --package lune-cli -- ${{ matrix.cargo-args }}
-
-      - name: Upload file to release
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ needs.create-release.outputs.upload_url }}
-          asset_path: ${{ matrix.file-name }}
-          asset_name: ${{ matrix.file-name }}
-          asset_content_type: ${{ matrix.file-type }}
-
-  release:
-    needs: ["create-release"]
+  #     - name: Install Rust
+  #       uses: dtolnay/rust-toolchain@stable
+
+  #     - name: Publish (dry-run)
+  #       uses: katyo/publish-crates@v2
+  #       with:
+  #         dry-run: true
+  #         check-repo: true
+  #         registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+
+  build:
+    needs: ["init"] # , "dry-run"]
     strategy:
+      fail-fast: false
       matrix:
         include:
           - name: Windows x86_64
             runner-os: windows-latest
-            artifact-name: lune-${{ needs.create-release.outputs.manifest_version }}-windows-x86_64
+            artifact-name: lune-${{ needs.init.outputs.version }}-windows-x86_64
             cargo-target: x86_64-pc-windows-msvc
 
           - name: Linux x86_64
             runner-os: ubuntu-latest
-            artifact-name: lune-${{ needs.create-release.outputs.manifest_version }}-linux-x86_64
+            artifact-name: lune-${{ needs.init.outputs.version }}-linux-x86_64
             cargo-target: x86_64-unknown-linux-gnu
 
+          - name: Linux aarch64
+            runner-os: ubuntu-latest
+            artifact-name: lune-${{ needs.init.outputs.version }}-linux-aarch64
+            cargo-target: aarch64-unknown-linux-gnu
+
           - name: macOS x86_64
             runner-os: macos-latest
-            artifact-name: lune-${{ needs.create-release.outputs.manifest_version }}-macos-x86_64
+            artifact-name: lune-${{ needs.init.outputs.version }}-macos-x86_64
             cargo-target: x86_64-apple-darwin
 
+          - name: macOS aarch64
+            runner-os: macos-latest
+            artifact-name: lune-${{ needs.init.outputs.version }}-macos-aarch64
+            cargo-target: aarch64-apple-darwin
+
     name: Build - ${{ matrix.name }}
     runs-on: ${{ matrix.runner-os }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with:
           targets: ${{ matrix.cargo-target }}
 
-      - name: Build binary
-        run: cargo build --package lune-cli --locked --release --all-features --target ${{ matrix.cargo-target }}
-        env:
-          CARGO_TARGET_DIR: output
+      - name: Install Just
+        uses: extractions/setup-just@v2
 
-      - name: Create binary archive
-        shell: bash
+      - name: Install build tooling (aarch64-unknown-linux-gnu)
+        if: matrix.cargo-target == 'aarch64-unknown-linux-gnu'
         run: |
-          mkdir -p staging
-          if [ "${{ matrix.runner-os }}" = "windows-latest" ]; then
-            cp "output/${{ matrix.cargo-target }}/release/lune.exe" staging/
-            cd staging
-            7z a ../release.zip *
-          else
-            cp "output/${{ matrix.cargo-target }}/release/lune" staging/
-            cd staging
-            zip ../release.zip *
-          fi
+          sudo apt-get update -y
+          sudo apt-get install -y musl-tools clang llvm
+          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
 
-      - name: Upload binary artifact
-        uses: actions/upload-artifact@v3
+      - name: Build binary
+        run: just build --locked --release --target ${{ matrix.cargo-target }}
+
+      - name: Create release archive
+        run: just zip-release ${{ matrix.cargo-target }}
+
+      - name: Upload release artifact
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.artifact-name }}
           path: release.zip
 
-      - name: Upload binary to release
-        uses: actions/upload-release-asset@v1
+  release-github:
+    name: Release (GitHub)
+    runs-on: ubuntu-latest
+    needs: ["init", "build"] # , "dry-run", "build"]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Just
+        uses: extractions/setup-just@v2
+
+      - name: Download releases
+        uses: actions/download-artifact@v4
+        with:
+          path: ./releases
+
+      - name: Unpack releases
+        run: just unpack-releases "./releases"
+
+      - name: Create release
+        uses: softprops/action-gh-release@v2
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          upload_url: ${{ needs.create-release.outputs.upload_url }}
-          asset_path: release.zip
-          asset_name: ${{ matrix.artifact-name }}.zip
-          asset_content_type: application/zip
+          name: ${{ needs.init.outputs.version }}
+          tag_name: v${{ needs.init.outputs.version }}
+          fail_on_unmatched_files: true
+          files: ./releases/*.zip
+          draft: true
+
+  # release-crates:
+  #   name: Release (crates.io)
+  #   runs-on: ubuntu-latest
+  #   needs: ["init", "dry-run", "build"]
+  #   steps:
+  #     - name: Checkout repository
+  #       uses: actions/checkout@v4
+
+  #     - name: Install Rust
+  #       uses: dtolnay/rust-toolchain@stable
+
+  #     - name: Publish crates
+  #       uses: katyo/publish-crates@v2
+  #       with:
+  #         dry-run: false
+  #         check-repo: true
+  #         registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}

.gitignore

@@ -3,12 +3,17 @@
 /.DS_Store
 /**/.DS_Store
 
-
 # Autogenerated dirs
 
 /bin
+/out
 /target
-/gitbook
+/staging
+
+/**/bin
+/**/out
+/**/target
+/**/staging
 
 # Autogenerated files
 
@@ -16,11 +21,7 @@ lune.yml
 luneDocs.json
 luneTypes.d.luau
 
-# NOTE: Don't remove the typedefs file in the docs dir!
-# We depend on it to autogenerate all of the above files.
-!/docs/luneTypes.d.luau
-
 # Files generated by runtime or build scripts
-packages/lib-roblox/scripts/brick_color.rs
-packages/lib-roblox/scripts/font_enum_map.rs
-packages/lib-roblox/scripts/physical_properties_enum_map.rs
+scripts/brick_color.rs
+scripts/font_enum_map.rs
+scripts/physical_properties_enum_map.rs

.justfile

@@ -1,30 +1,129 @@
-# Run an individual test using the Lune CLI
-run-test TEST_NAME:
-	cargo run -- "tests/{{TEST_NAME}}"
+EXT := if os() == "windows" { ".exe" } else { "" }
+CWD := invocation_directory()
+BIN_NAME := "lune"
+
+# Default hidden recipe for listing other recipes + cwd
+[no-cd]
+[no-exit-message]
+[private]
+default:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	printf "Current directory:\n    {{CWD}}\n"
+	just --list
+
+# Builds the Lune CLI binary
+[no-exit-message]
+build *ARGS:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	cargo build --bin {{BIN_NAME}} {{ARGS}}
+
+# Run an individual file using the Lune CLI
+[no-exit-message]
+run FILE_PATH:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	cargo run --bin {{BIN_NAME}} -- run "{{FILE_PATH}}"
 
 # Run tests for the Lune library
-test:
-	cargo test --package lune -- --test-threads 1
+[no-exit-message]
+test *ARGS:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	cargo test --lib -- {{ARGS}}
 
-# Run tests for the Lune CLI
-test-cli:
-	cargo test --package lune-cli
+# Run tests for the Lune binary
+[no-exit-message]
+test-bin *ARGS:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	cargo test --bin {{BIN_NAME}} -- {{ARGS}}
 
-# Generate gitbook directory
-generate-gitbook:
-	rm -rf ./gitbook
+# Apply formatting for all Rust & Luau files
+[no-exit-message]
+fmt:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	stylua .lune scripts tests types \
+		--glob "tests/**/*.luau" \
+		--glob "!tests/roblox/rbx-test-files/**"
+	cargo fmt
 
-	mkdir gitbook
-	mkdir gitbook/docs
+# Check formatting for all Rust & Luau files
+[no-exit-message]
+fmt-check:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	stylua .lune scripts tests types \
+		--glob "tests/**/*.luau" \
+		--glob "!tests/roblox/rbx-test-files/**"
+	cargo fmt --check
 
-	cp -R docs gitbook
-	cp README.md gitbook/docs/README.md
-	cp .gitbook.yaml gitbook/.gitbook.yaml
+# Analyze and lint Luau files using luau-lsp
+[no-exit-message]
+analyze:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	luau-lsp analyze \
+		--settings=".vscode/settings.json" \
+		--ignore="tests/roblox/rbx-test-files/**" \
+		.lune scripts tests types
 
-	rm -rf gitbook/docs/typedefs
+# Zips up the built binary into a single zip file
+[no-exit-message]
+zip-release TARGET_TRIPLE:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	rm -rf staging
+	rm -rf release.zip
+	mkdir -p staging
+	cp "target/{{TARGET_TRIPLE}}/release/{{BIN_NAME}}{{EXT}}" staging/
+	cd staging
+	if [ "{{os_family()}}" = "windows" ]; then
+		7z a ../release.zip *
+	else
+		chmod +x {{BIN_NAME}}
+		zip ../release.zip *
+	fi
+	cd "{{CWD}}"
+	rm -rf staging
 
-	cargo run -- --generate-gitbook-dir
-
-# Publish gitbook directory to gitbook branch
-publish-gitbook:
-	npx push-dir --dir=gitbook --branch=gitbook
+# Used in GitHub workflow to move per-matrix release zips
+[no-exit-message]
+[private]
+unpack-releases RELEASES_DIR:
+	#!/usr/bin/env bash
+	set -euo pipefail
+	#
+	if [ ! -d "{{RELEASES_DIR}}" ]; then
+		echo "Releases directory is missing"
+		exit 1
+	fi
+	#
+	cd "{{RELEASES_DIR}}"
+	echo ""
+	echo "Releases dir:"
+	ls -lhrt
+	echo ""
+	echo "Searching for zipped releases..."
+	#
+	for DIR in * ; do
+		if [ -d "$DIR" ]; then
+			cd "$DIR"
+			for FILE in * ; do
+				if [ ! -d "$FILE" ]; then
+					if [ "$FILE" = "release.zip" ]; then
+						echo "Found zipped release '$DIR'"
+						mv "$FILE" "../$DIR.zip"
+						rm -rf "../$DIR/"
+					fi
+				fi
+			done
+			cd ..
+		fi
+	done
+	#
+	echo ""
+	echo "Releases dir:"
+	ls -lhrt

.luaurc

@@ -1,7 +1,16 @@
 {
-	"languageMode": "strict",
-	"lint": { "*": true },
-	"lintErrors": false,
-	"typeErrors": true,
-	"globals": []
+  "languageMode": "strict",
+  "lint": {
+    "*": true
+  },
+  "lintErrors": false,
+  "typeErrors": true,
+  "globals": [
+    "warn"
+  ],
+  "aliases": {
+    "lune": "./types/",
+    "tests": "./tests",
+    "require-tests": "./tests/require/tests"
+  }
 }

.lune/csv_printer.luau

@@ -4,6 +4,9 @@
 local LINE_SEPARATOR = "\n"
 local COMMA_SEPARATOR = ","
 
+local fs = require("@lune/fs")
+local process = require("@lune/process")
+
 local path = process.args[1] or ".lune/data/test.csv"
 
 assert(path ~= nil and #path > 0, "No input file path was given")

.lune/hello_lune.luau

@@ -1,15 +1,9 @@
-<!-- markdownlint-disable MD033 -->
-<!-- markdownlint-disable MD026 -->
+local fs = require("@lune/fs")
+local net = require("@lune/net")
+local process = require("@lune/process")
+local stdio = require("@lune/stdio")
+local task = require("@lune/task")
 
-# ✏️ Writing Lune Scripts
-
-If you've already written some version of Lua (or Luau) scripts before, this walkthrough will make you feel right at home.
-
-Once you have a script you want to run, head over to the [Running Scripts](https://lune.gitbook.io/lune/home/running-scripts) page.
-
-## Hello, Lune!
-
-```lua
 --[[
 	EXAMPLE #1
 
@@ -26,8 +20,6 @@ else
 	print("Got no arguments ☹️")
 end
 
-
-
 --[[
 	EXAMPLE #2
 
@@ -45,8 +37,6 @@ else
 	print("Confirmed!")
 end
 
-
-
 --[[
 	EXAMPLE #3
 
@@ -68,43 +58,9 @@ for key, value in process.env do
 	print(string.format("[%s] %s", box, key))
 end
 
-
-
 --[[
 	EXAMPLE #4
 
-	Writing a module
-
-	Modularizing and splitting up your code is Lune is very straight-forward,
-	in contrast to other scripting languages and shells such as bash
-]]
-
-local module = {}
-
-function module.sayHello()
-	print("Hello, Lune! 🌙")
-end
-
-return module
-
-
-
---[[
-	EXAMPLE #5
-
-	Using a function from another module / script
-
-	Lune has path-relative imports, similar to other popular languages such as JavaScript
-]]
-
-local module = require("../modules/module")
-module.sayHello()
-
-
-
---[[
-	EXAMPLE #6
-
 	Spawning concurrent tasks
 
 	These tasks will run at the same time as other Lua code which lets you do primitive multitasking
@@ -124,10 +80,8 @@ task.delay(5, function()
 	print("Goodbye again! 🌙")
 end)
 
-
-
 --[[
-	EXAMPLE #7
+	EXAMPLE #5
 
 	Read files in the current directory
 
@@ -166,10 +120,8 @@ for _, entry in entries do
 	end
 end
 
-
-
 --[[
-	EXAMPLE #8
+	EXAMPLE #6
 
 	Call out to another program / executable
 
@@ -177,15 +129,13 @@ end
 ]]
 
 print("Sending 4 pings to google 🌏")
-local result = process.spawn("ping", {
+local result = process.exec("ping", {
 	"google.com",
 	"-c 4",
 })
 
-
-
 --[[
-	EXAMPLE #9
+	EXAMPLE #7
 
 	Using the result of a spawned process, exiting the process
 
@@ -209,10 +159,8 @@ else
 	process.exit(result.code)
 end
 
-
-
 --[[
-	EXAMPLE #10
+	EXAMPLE #8
 
 	Using the built-in networking library, encoding & decoding json
 ]]
@@ -223,7 +171,7 @@ local apiResult = net.request({
 	method = "PATCH",
 	headers = {
 		["Content-Type"] = "application/json",
-	},
+	} :: { [string]: string },
 	body = net.jsonEncode({
 		title = "foo",
 		body = "bar",
@@ -249,10 +197,8 @@ assert(apiResponse.title == "foo", "Invalid json response")
 assert(apiResponse.body == "bar", "Invalid json response")
 print("Got valid JSON response with changes applied")
 
-
-
 --[[
-	EXAMPLE #11
+	EXAMPLE #9
 
 	Using the stdio library to print pretty
 ]]
@@ -261,7 +207,7 @@ print("Printing with pretty colors and auto-formatting 🎨")
 
 print(stdio.color("blue") .. string.rep("—", 22) .. stdio.color("reset"))
 
-info("API response:", apiResponse)
+print("API response:", apiResponse)
 warn({
 	Oh = {
 		No = {
@@ -276,51 +222,10 @@ warn({
 
 print(stdio.color("blue") .. string.rep("—", 22) .. stdio.color("reset"))
 
-
-
 --[[
-	EXAMPLE #12
+	EXAMPLE #10
 
 	Saying goodbye 😔
 ]]
 
 print("Goodbye, lune! 🌙")
-
-```
-
-More real-world examples of how to write Lune scripts can be found in the [examples](https://github.com/filiptibell/lune/blob/main/.lune/examples/) folder.
-
-Documentation for individual APIs and types can be found in "API Reference" in the sidebar of this wiki.
-
-## Extras
-
-### 🔀 Example translation from Bash
-
-```bash
-#!/bin/bash
-VALID=true
-COUNT=1
-while [ $VALID ]
-do
-	echo $COUNT
-	if [ $COUNT -eq 5 ];
-	then
-		break
-	fi
-	((COUNT++))
-done
-```
-
-**_With Lune & Luau:_**
-
-```lua
-local valid = true
-local count = 1
-while valid do
-	print(count)
-	if count == 5 then
-		break
-	end
-	count += 1
-end
-```

.lune/http_server.luau

@@ -1,24 +1,28 @@
 --> A basic http server that echoes the given request
 --> body at /ping and otherwise responds 404 "Not Found"
 
+local net = require("@lune/net")
+local process = require("@lune/process")
+local task = require("@lune/task")
+
 local PORT = if process.env.PORT ~= nil and #process.env.PORT > 0
 	then assert(tonumber(process.env.PORT), "Failed to parse port from env")
 	else 8080
 
 -- Create our responder functions
 
-local function pong(request: NetRequest): string
+local function pong(request: net.ServeRequest): string
 	return `Pong!\n{request.path}\n{request.body}`
 end
 
-local function teapot(_request: NetRequest): NetResponse
+local function teapot(_request: net.ServeRequest): net.ServeResponse
 	return {
 		status = 418,
 		body = "🫖",
 	}
 end
 
-local function notFound(_request: NetRequest): NetResponse
+local function notFound(_request: net.ServeRequest): net.ServeResponse
 	return {
 		status = 404,
 		body = "Not Found",

.lune/websocket_client.luau

@@ -1,5 +1,9 @@
 --> A basic web socket client that communicates with an echo server
 
+local net = require("@lune/net")
+local process = require("@lune/process")
+local task = require("@lune/task")
+
 local PORT = if process.env.PORT ~= nil and #process.env.PORT > 0
 	then assert(tonumber(process.env.PORT), "Failed to parse port from env")
 	else 8080
@@ -24,8 +28,8 @@ end)
 
 for _ = 1, 5 do
 	local start = os.clock()
-	socket.send(tostring(1))
-	local response = socket.next()
+	socket:send(tostring(1))
+	local response = socket:next()
 	local elapsed = os.clock() - start
 	print(`Got response '{response}' in {elapsed * 1_000} milliseconds`)
 	task.wait(1 - elapsed)
@@ -34,7 +38,7 @@ end
 -- Everything went well, and we are done with the socket, so we can close it
 
 print("Closing web socket...")
-socket.close()
+socket:close()
 
 task.cancel(forceExit)
 print("Done! 🌙")

.lune/websocket_server.luau

@@ -1,5 +1,9 @@
 --> A basic web socket server that echoes given messages
 
+local net = require("@lune/net")
+local process = require("@lune/process")
+local task = require("@lune/task")
+
 local PORT = if process.env.PORT ~= nil and #process.env.PORT > 0
 	then assert(tonumber(process.env.PORT), "Failed to parse port from env")
 	else 8080
@@ -11,9 +15,9 @@ local handle = net.serve(PORT, {
 	handleWebSocket = function(socket)
 		print("Got new web socket connection!")
 		repeat
-			local message = socket.next()
+			local message = socket:next()
 			if message ~= nil then
-				socket.send("Echo - " .. message)
+				socket:send("Echo - " .. message)
 			end
 		until message == nil
 		print("Web socket disconnected.")

.vscode/extensions.json

@@ -1,8 +1,8 @@
 {
-	"recommendations": [
-		"rust-lang.rust-analyzer",
-		"esbenp.prettier-vscode",
-		"JohnnyMorganz.stylua",
-		"DavidAnson.vscode-markdownlint"
-	]
+    "recommendations": [
+        "rust-lang.rust-analyzer",
+        "esbenp.prettier-vscode",
+        "JohnnyMorganz.stylua",
+        "DavidAnson.vscode-markdownlint"
+    ]
 }

.vscode/settings.json

@@ -1,45 +1,27 @@
 {
-	// Luau - disable Roblox features, enable Lune typedefs & requires
-	"luau-lsp.sourcemap.enabled": false,
-	"luau-lsp.types.roblox": false,
-	"luau-lsp.types.definitionFiles": ["luneTypes.d.luau"],
-	"luau-lsp.types.documentationFiles": ["luneDocs.json"],
-	"luau-lsp.require.mode": "relativeToFile",
-	// Luau - ignore type defs file in docs dir and dev scripts we use
-	"luau-lsp.ignoreGlobs": [
-		"docs/*.d.luau",
-		"packages/lib-roblox/scripts/*.luau",
-		"tests/roblox/rbx-test-files/**/*.lua",
-		"tests/roblox/rbx-test-files/**/*.luau"
-	],
-	// Rust
-	"rust-analyzer.check.command": "clippy",
-	// Formatting
-	"editor.formatOnSave": true,
-	"stylua.searchParentDirectories": true,
-	"prettier.tabWidth": 2,
-	"[luau][lua]": {
-		"editor.defaultFormatter": "JohnnyMorganz.stylua"
-	},
-	"[json][jsonc][markdown][yaml]": {
-		"editor.defaultFormatter": "esbenp.prettier-vscode"
-	},
-	"[rust]": {
-		"editor.defaultFormatter": "rust-lang.rust-analyzer"
-	},
-	// Ignore temp / gitignored files while editing for a more focused
-	// workspace, this can be deleted or overridden safely if needed
-	"files.exclude": {
-		// Defaults
-		"**/.git": true,
-		"**/.svn": true,
-		"**/.hg": true,
-		"**/CVS": true,
-		"**/.DS_Store": true,
-		"**/Thumbs.db": true,
-		// Autogenerate dirs
-		"bin": true,
-		"target": true,
-		"gitbook": true
-	}
+    "luau-lsp.sourcemap.enabled": false,
+    "luau-lsp.types.roblox": false,
+    "luau-lsp.require.mode": "relativeToFile",
+    "luau-lsp.require.directoryAliases": {
+        "@lune/": "./types/",
+        "@tests/": "./tests/",
+        "@require-tests/": "./tests/require/tests/"
+    },
+    "luau-lsp.ignoreGlobs": [
+        "tests/roblox/rbx-test-files/**/*.lua",
+        "tests/roblox/rbx-test-files/**/*.luau"
+    ],
+    "rust-analyzer.check.command": "clippy",
+    "editor.formatOnSave": true,
+    "stylua.searchParentDirectories": true,
+    "prettier.tabWidth": 2,
+    "[luau][lua]": {
+        "editor.defaultFormatter": "JohnnyMorganz.stylua"
+    },
+    "[json][jsonc][markdown][yaml]": {
+        "editor.defaultFormatter": "esbenp.prettier-vscode"
+    },
+    "[rust]": {
+        "editor.defaultFormatter": "rust-lang.rust-analyzer"
+    }
 }

CONTRIBUTING.md

@@ -0,0 +1,71 @@
+<!-- markdownlint-disable MD001 -->
+<!-- markdownlint-disable MD033 -->
+
+# Contributing
+
+---
+
+### Reporting a Bug
+
+- Make sure the bug has not already been reported by searching on GitHub under [Issues](https://github.com/lune-org/lune/issues).
+- If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/lune-org/lune/issues/new). Be sure to include a **title and description**, as much relevant information as possible, and if applicable, a **code sample** or a **test case** demonstrating the expected behavior.
+
+---
+
+### Contributing - Bug Fixes
+
+1. Make sure an [issue](https://github.com/lune-org/lune/issues) has been created for the bug first, so that it can be tracked and searched for in the repository history. This is not mandatory for small fixes.
+2. Open a new GitHub pull request for it. A pull request for a bug fix must include:
+   - A clear and concise description of the bug it is fixing.
+   - A new test file ensuring there are no regressions after the bug has been fixed.
+   - A link to the relevant issue, or a `Fixes #issue` line, if an issue exists.
+
+### Contributing - Features
+
+1. Make sure an [issue](https://github.com/lune-org/lune/issues) has been created for the feature first, so that it can be tracked and searched for in the repository history. If you are making changes to an existing feature, and no issue exists, one should be created for the proposed changes.
+2. Any API design or considerations should first be brought up and discussed in the relevant issue, to prevent long review times on pull requests and unnecessary work for maintainers.
+3. Familiarize yourself with the codebase and the tools you will be using. Some important parts include:
+   - The [mlua](https://crates.io/crates/mlua) library, which we use to interface with Luau.
+   - Any [built-in libraries](https://github.com/lune-org/lune/tree/main/src/lune/builtins) that are relevant for your new feature. If you are making a new built-in library, refer to existing ones for structure and implementation details.
+   - Our toolchain, notably [StyLua](https://github.com/JohnnyMorganz/StyLua), [rustfmt](https://github.com/rust-lang/rustfmt), and [clippy](https://github.com/rust-lang/rust-clippy). If you do not use these tools there is a decent chance CI will fail on your pull request, blocking it from getting approved.
+4. Write some code!
+5. Open a new GitHub pull request. A pull request for a feature must include:
+   - A clear and concise description of the new feature or changes to the feature.
+   - Test files for any added or changed functionality.
+   - A link to the relevant issue, or a `Closes #issue` line.
+
+### Contributing - Formatting & Cosmetic Changes
+
+Changes that are purely cosmetic, and do not add to the stability, functionality, or testability of Lune, will generally not be accepted unless there has been previous discussion about the changes being made.
+
+### Contributing - Documentation
+
+#### Documentation Site
+
+Check out the [docs](https://github.com/lune-org/docs) repository and its contribution guidelines.
+
+#### Type Definitions
+
+If type definitions for built-in libraries need improvements:
+
+1. Check out the [types](https://github.com/lune-org/lune/tree/main/types) directory at the root of the repository.
+2. Make the desired changes, and verify that they have the desired outcome.
+3. Open a new GitHub pull request for your changes.
+
+---
+
+### Publishing a Release
+
+The Lune release process is semi-automated, and takes care of most things for you. Here's how to create a new release:
+
+1. Make sure the changelog is up to date and contains all of the changes since the last release.
+2. Add the release date in the changelog + set a new version number in `Cargo.toml`.
+3. Commit and push changes from step 2 to GitHub. This will automatically publish the Lune library to [crates.io](https://crates.io) when the version number changes.
+4. Trigger the [release](https://github.com/lune-org/lune/actions/workflows/release.yaml) workflow on GitHub manually, and wait for it to finish. Find the new pending release in the [Releases](https://github.com/lune-org/lune/releases) section.
+5. Add in changes from the changelog for the new pending release into the description, hit "accept" on creating a new version tag, and publish 🚀
+
+---
+
+If you have any questions, check out the `#lune` channel in the [Roblox OSS discord](https://discord.gg/H9WqmFAB5Y), where most of our realtime discussion takes place!
+
+Thank you for contributing to Lune! 🌙

Cargo.toml

@@ -1,39 +1,23 @@
 [workspace]
-members = ["packages/cli", "packages/lib", "packages/lib-roblox"]
-default-members = ["packages/cli"]
-
-# Package config values shared across all packages,
-# such as version, license, and other metadata
-[workspace.package]
-version = "0.6.2"
-edition = "2021"
-license = "MPL-2.0"
-repository = "https://github.com/filiptibell/lune"
-description = "A Luau script runner"
-readme = "README.md"
-keywords = ["cli", "lua", "luau", "scripts"]
-categories = ["command-line-interface"]
-
-# Shared dependencies that are used across 2 or more packages
-# These are declared here to ensure consistent versioning
-[workspace.dependencies]
-console = "0.15"
-futures-util = "0.3"
-lazy_static = "1.4"
-
-mlua = { version = "0.8", features = ["luau", "serialize"] }
-
-# Serde dependencies, supporting user-facing formats: json, yaml, toml
-serde = { version = "1.0", features = ["derive"] }
-serde_json = { version = "1.0", features = ["preserve_order"] }
-serde_yaml = "0.9"
-toml = { version = "0.7", features = ["preserve_order"] }
-
-# Tokio runtime & async clients
-tokio = { version = "1.24", features = ["full"] }
-reqwest = { version = "0.11", default-features = false, features = [
-	"rustls-tls",
-] }
+resolver = "2"
+default-members = ["crates/lune"]
+members = [
+    "crates/lune",
+    "crates/lune-roblox",
+    "crates/lune-std",
+    "crates/lune-std-datetime",
+    "crates/lune-std-fs",
+    "crates/lune-std-luau",
+    "crates/lune-std-net",
+    "crates/lune-std-process",
+    "crates/lune-std-regex",
+    "crates/lune-std-roblox",
+    "crates/lune-std-serde",
+    "crates/lune-std-stdio",
+    "crates/lune-std-task",
+    "crates/lune-utils",
+    "crates/mlua-luau-scheduler",
+]
 
 # Profile for building the release binary, with the following options set:
 #
@@ -49,3 +33,32 @@ reqwest = { version = "0.11", default-features = false, features = [
 opt-level = "z"
 strip = true
 lto = true
+
+# Lints for all crates in the workspace
+#
+# 1. Error on all lints by default, then make cargo + clippy pedantic lints just warn
+# 2. Selectively allow some lints that are _too_ pedantic, such as:
+#    - Casts between number types
+#    - Module naming conventions
+#    - Imports and multiple dependency versions
+[workspace.lints.clippy]
+all = { level = "deny", priority = -3 }
+cargo = { level = "warn", priority = -2 }
+pedantic = { level = "warn", priority = -1 }
+
+cast_lossless = { level = "allow", priority = 1 }
+cast_possible_truncation = { level = "allow", priority = 1 }
+cast_possible_wrap = { level = "allow", priority = 1 }
+cast_precision_loss = { level = "allow", priority = 1 }
+cast_sign_loss = { level = "allow", priority = 1 }
+
+similar_names = { level = "allow", priority = 1 }
+unnecessary_wraps = { level = "allow", priority = 1 }
+unnested_or_patterns = { level = "allow", priority = 1 }
+unreadable_literal = { level = "allow", priority = 1 }
+
+multiple_crate_versions = { level = "allow", priority = 1 }
+module_inception = { level = "allow", priority = 1 }
+module_name_repetitions = { level = "allow", priority = 1 }
+needless_pass_by_value = { level = "allow", priority = 1 }
+wildcard_imports = { level = "allow", priority = 1 }

README.md

@@ -1,45 +1,48 @@
 <!-- markdownlint-disable MD033 -->
 <!-- markdownlint-disable MD041 -->
 
+<img align="right" width="250" src="assets/logo/tilt_svg.svg" alt="Lune logo" />
+
+<h1 align="center">Lune</h1>
+
 <div align="center">
-	<h1> Lune 🌙 </h1>
 	<div>
 		<a href="https://crates.io/crates/lune">
 			<img src="https://img.shields.io/crates/v/lune.svg?label=Version" alt="Current Lune library version" />
 		</a>
-		<a href="https://github.com/filiptibell/lune/actions">
-			<img src="https://shields.io/endpoint?url=https://badges.readysetplay.io/workflow/filiptibell/lune/ci.yaml" alt="CI status" />
+		<a href="https://github.com/lune-org/lune/actions">
+			<img src="https://shields.io/endpoint?url=https://badges.readysetplay.io/workflow/lune-org/lune/ci.yaml" alt="CI status" />
 		</a>
-		<a href="https://github.com/filiptibell/lune/actions">
-			<img src="https://shields.io/endpoint?url=https://badges.readysetplay.io/workflow/filiptibell/lune/release.yaml" alt="Release status" />
+		<a href="https://github.com/lune-org/lune/actions">
+			<img src="https://shields.io/endpoint?url=https://badges.readysetplay.io/workflow/lune-org/lune/release.yaml" alt="Release status" />
 		</a>
-		<a href="https://github.com/filiptibell/lune/blob/main/LICENSE.txt">
-			<img src="https://img.shields.io/github/license/filiptibell/lune.svg?label=License&color=informational" alt="Current Lune library version" />
+		<a href="https://github.com/lune-org/lune/blob/main/LICENSE.txt">
+			<img src="https://img.shields.io/github/license/lune-org/lune.svg?label=License&color=informational" alt="Lune license" />
 		</a>
 	</div>
 </div>
 
----
+<br/>
 
-A standalone [Luau](https://luau-lang.org) script runtime.
+A standalone [Luau](https://luau-lang.org) runtime.
 
-Write and run scripts, similar to runtimes for other languages such as [Node](https://nodejs.org) / [Deno](https://deno.land), or [Luvit](https://luvit.io) for vanilla Lua.
+Write and run programs, similar to runtimes for other languages such as [Node](https://nodejs.org), [Deno](https://deno.land), [Bun](https://bun.sh), or [Luvit](https://luvit.io) for vanilla Lua.
 
-Lune provides fully asynchronous APIs wherever possible, and is built in Rust 🦀 for optimal safety and correctness.
+Lune provides fully asynchronous APIs wherever possible, and is built in Rust 🦀 for speed, safety and correctness.
 
 ## Features
 
--   🌙 A strictly minimal but powerful interface that is easy to read and remember, just like Luau itself
--   🧰 Fully featured APIs for the filesystem, networking, stdio, all included in the small (~3mb) executable
--   📚 World-class documentation, on the web _or_ directly in your editor, no network connection necessary
--   🏡 A familiar scripting environment for Roblox developers, with an included 1-to-1 task scheduler port
--   ✏️ Optional built-in library for manipulating Roblox place & model files, and their instances
+- 🌙 Strictly minimal but powerful interface that is easy to read and remember, just like Luau itself
+- 🧰 Fully featured APIs for the filesystem, networking, stdio, all included in the small (~5mb zipped) executable
+- 📚 World-class documentation, on the web _or_ directly in your editor, no network connection necessary
+- 🏡 Familiar runtime environment for Roblox developers, with an included 1-to-1 task scheduler port
+- ✏️ Optional built-in library for manipulating Roblox place & model files, and their instances
 
 ## Non-goals
 
--   Making scripts short and terse - proper autocomplete / intellisense make scripting using Lune just as quick, and readability is important
--   Running full Roblox game scripts outside of Roblox - there is some compatibility, but Lune is meant for different purposes
+- Making programs short and terse - proper autocomplete / intellisense make using Lune just as quick, and readability is important
+- Running full Roblox games outside of Roblox - there is some compatibility, but Lune is meant for different purposes
 
 ## Where do I start?
 
-Head over to the [installation](https://lune.gitbook.io/lune/home/installation) page to get started using Lune!
+Head over to the [Installation](https://lune-org.github.io/docs/getting-started/1-installation) page to get started using Lune!

aftman.toml

@@ -1,5 +0,0 @@
-[tools]
-just = "readysetplay/just@1.8.0"
-luau-lsp = "JohnnyMorganz/luau-lsp@1.15.0"
-selene = "Kampfkarren/selene@0.24.0"
-stylua = "JohnnyMorganz/StyLua@0.16.0"

assets/logo/no-tilt-grid_svg.svg

@@ -0,0 +1,69 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g filter="url(#filter0_i_6_19)">
+<g clip-path="url(#clip0_6_19)">
+<rect x="2" y="2" width="16" height="16" rx="1" fill="url(#paint0_linear_6_19)"/>
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assets/logo/tilt_svg.svg

@@ -0,0 +1,69 @@
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+<stop offset="1" stop-color="#C848E9"/>
+</linearGradient>
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+</svg>

crates/lune-roblox/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "lune-roblox"
+version = "0.1.4"
+edition = "2021"
+license = "MPL-2.0"
+repository = "https://github.com/lune-org/lune"
+description = "Roblox library for Lune"
+
+[lib]
+path = "src/lib.rs"
+
+[lints]
+workspace = true
+
+[dependencies]
+mlua = { version = "0.9.9", features = ["luau"] }
+
+glam = "0.27"
+rand = "0.8"
+thiserror = "1.0"
+once_cell = "1.17"
+
+rbx_binary = "1.0.0"
+rbx_dom_weak = "3.0.0"
+rbx_reflection = "5.0.0"
+rbx_reflection_database = "1.0.0"
+rbx_xml = "1.0.0"
+
+lune-utils = { version = "0.1.3", path = "../lune-utils" }

crates/lune-roblox/src/datatypes/attributes.rs

@@ -4,6 +4,15 @@ use rbx_dom_weak::types::{Variant as DomValue, VariantType as DomType};
 
 use super::extension::DomValueExt;
 
+/**
+    Checks if the given name is a valid attribute name.
+
+    # Errors
+
+    - If the name starts with the prefix "RBX".
+    - If the name contains any characters other than alphanumeric characters and underscore.
+    - If the name is longer than 100 characters.
+*/
 pub fn ensure_valid_attribute_name(name: impl AsRef<str>) -> LuaResult<()> {
     let name = name.as_ref();
     if name.to_ascii_uppercase().starts_with("RBX") {
@@ -23,6 +32,13 @@ pub fn ensure_valid_attribute_name(name: impl AsRef<str>) -> LuaResult<()> {
     }
 }
 
+/**
+    Checks if the given value is a valid attribute value.
+
+    # Errors
+
+    - If the value is not a valid attribute type.
+*/
 pub fn ensure_valid_attribute_value(value: &DomValue) -> LuaResult<()> {
     let is_valid = matches!(
         value.ty(),
@@ -31,8 +47,10 @@ pub fn ensure_valid_attribute_value(value: &DomValue) -> LuaResult<()> {
             | DomType::CFrame
             | DomType::Color3
             | DomType::ColorSequence
+            | DomType::EnumItem
             | DomType::Float32
             | DomType::Float64
+            | DomType::Font
             | DomType::Int32
             | DomType::Int64
             | DomType::NumberRange
@@ -43,14 +61,13 @@ pub fn ensure_valid_attribute_value(value: &DomValue) -> LuaResult<()> {
             | DomType::UDim2
             | DomType::Vector2
             | DomType::Vector3
-            | DomType::Font
     );
     if is_valid {
         Ok(())
     } else {
         Err(LuaError::RuntimeError(format!(
             "'{}' is not a valid attribute type",
-            value.ty().variant_name()
+            value.ty().variant_name().unwrap_or("???")
         )))
     }
 }

crates/lune-roblox/src/datatypes/conversion.rs

@@ -50,15 +50,25 @@ impl<'lua> DomValueToLua<'lua> for LuaValue<'lua> {
                 DomValue::Float64(n) => Ok(LuaValue::Number(*n)),
                 DomValue::Float32(n) => Ok(LuaValue::Number(*n as f64)),
                 DomValue::String(s) => Ok(LuaValue::String(lua.create_string(s)?)),
-                DomValue::BinaryString(s) => Ok(LuaValue::String(lua.create_string(&s)?)),
-                DomValue::Content(s) => Ok(LuaValue::String(
+                DomValue::BinaryString(s) => Ok(LuaValue::String(lua.create_string(s)?)),
+                DomValue::ContentId(s) => Ok(LuaValue::String(
                     lua.create_string(AsRef::<str>::as_ref(s))?,
                 )),
 
+                // NOTE: Dom references may point to instances that
+                // no longer exist, so we handle that here instead of
+                // in the userdata conversion to be able to return nils
+                DomValue::Ref(value) => match Instance::new_opt(*value) {
+                    Some(inst) => Ok(inst.into_lua(lua)?),
+                    None => Ok(LuaValue::Nil),
+                },
+
                 // NOTE: Some values are either optional or default and we should handle
                 // that properly here since the userdata conversion above will always fail
-                DomValue::OptionalCFrame(None) => Ok(LuaValue::Nil),
-                DomValue::PhysicalProperties(dom::PhysicalProperties::Default) => Ok(LuaValue::Nil),
+                DomValue::OptionalCFrame(None)
+                | DomValue::PhysicalProperties(dom::PhysicalProperties::Default) => {
+                    Ok(LuaValue::Nil)
+                }
 
                 _ => Err(e),
             },
@@ -94,8 +104,8 @@ impl<'lua> LuaToDomValue<'lua> for LuaValue<'lua> {
                 (LuaValue::String(s), DomType::BinaryString) => {
                     Ok(DomValue::BinaryString(s.as_ref().into()))
                 }
-                (LuaValue::String(s), DomType::Content) => {
-                    Ok(DomValue::Content(s.to_str()?.to_string().into()))
+                (LuaValue::String(s), DomType::ContentId) => {
+                    Ok(DomValue::ContentId(s.to_str()?.to_string().into()))
                 }
 
                 // NOTE: Some values are either optional or default and we
@@ -108,7 +118,7 @@ impl<'lua> LuaToDomValue<'lua> for LuaValue<'lua> {
                 (LuaValue::UserData(u), d) => u.lua_to_dom_value(lua, Some(d)),
 
                 (v, d) => Err(DomConversionError::ToDomValue {
-                    to: d.variant_name(),
+                    to: d.variant_name().unwrap_or("???"),
                     from: v.type_name(),
                     detail: None,
                 }),
@@ -146,6 +156,16 @@ macro_rules! dom_to_userdata {
     };
 }
 
+/**
+    Converts a generic lua userdata to an rbx-dom type.
+
+    Since the type of the userdata needs to be specified
+    in an explicit manner, this macro syntax was chosen:
+
+    ```rs
+    userdata_to_dom!(value_identifier as UserdataType => DomType)
+    ```
+*/
 macro_rules! userdata_to_dom {
     ($userdata:ident as $from_type:ty => $to_type:ty) => {
         match $userdata.borrow::<$from_type>() {
@@ -180,13 +200,14 @@ impl<'lua> DomValueToLua<'lua> for LuaAnyUserData<'lua> {
             DomValue::Color3(value)         => dom_to_userdata!(lua, value => Color3),
             DomValue::Color3uint8(value)    => dom_to_userdata!(lua, value => Color3),
             DomValue::ColorSequence(value)  => dom_to_userdata!(lua, value => ColorSequence),
+            DomValue::Content(value)        => dom_to_userdata!(lua, value => Content),
+            DomValue::EnumItem(value)       => dom_to_userdata!(lua, value => EnumItem),
             DomValue::Faces(value)          => dom_to_userdata!(lua, value => Faces),
             DomValue::Font(value)           => dom_to_userdata!(lua, value => Font),
             DomValue::NumberRange(value)    => dom_to_userdata!(lua, value => NumberRange),
             DomValue::NumberSequence(value) => dom_to_userdata!(lua, value => NumberSequence),
             DomValue::Ray(value)            => dom_to_userdata!(lua, value => Ray),
             DomValue::Rect(value)           => dom_to_userdata!(lua, value => Rect),
-            DomValue::Ref(value)            => dom_to_userdata!(lua, value => Instance),
             DomValue::Region3(value)        => dom_to_userdata!(lua, value => Region3),
             DomValue::Region3int16(value)   => dom_to_userdata!(lua, value => Region3int16),
             DomValue::UDim(value)           => dom_to_userdata!(lua, value => UDim),
@@ -205,7 +226,7 @@ impl<'lua> DomValueToLua<'lua> for LuaAnyUserData<'lua> {
 
             v => {
                 Err(DomConversionError::FromDomValue {
-                    from: v.variant_name(),
+                    from: v.variant_name().unwrap_or("???"),
                     to: "userdata",
                     detail: Some("Type not supported".to_string()),
                 })
@@ -237,7 +258,8 @@ impl<'lua> LuaToDomValue<'lua> for LuaAnyUserData<'lua> {
                 DomType::Color3         => userdata_to_dom!(self as Color3         => dom::Color3),
                 DomType::Color3uint8    => userdata_to_dom!(self as Color3         => dom::Color3uint8),
                 DomType::ColorSequence  => userdata_to_dom!(self as ColorSequence  => dom::ColorSequence),
-                DomType::Enum           => userdata_to_dom!(self as EnumItem       => dom::Enum),
+                DomType::Content        => userdata_to_dom!(self as Content        => dom::Content),
+                DomType::EnumItem       => userdata_to_dom!(self as EnumItem       => dom::EnumItem),
                 DomType::Faces          => userdata_to_dom!(self as Faces          => dom::Faces),
                 DomType::Font           => userdata_to_dom!(self as Font           => dom::Font),
                 DomType::NumberRange    => userdata_to_dom!(self as NumberRange    => dom::NumberRange),
@@ -274,8 +296,8 @@ impl<'lua> LuaToDomValue<'lua> for LuaAnyUserData<'lua> {
                 }
 
                 ty => {
-                    return Err(DomConversionError::ToDomValue {
-                        to: ty.variant_name(),
+                    Err(DomConversionError::ToDomValue {
+                        to: ty.variant_name().unwrap_or("???"),
                         from: "userdata",
                         detail: Some("Type not supported".to_string()),
                     })
@@ -295,14 +317,14 @@ impl<'lua> LuaToDomValue<'lua> for LuaAnyUserData<'lua> {
                 value if value.is::<CFrame>()         => userdata_to_dom!(value as CFrame         => dom::CFrame),
                 value if value.is::<Color3>()         => userdata_to_dom!(value as Color3         => dom::Color3),
                 value if value.is::<ColorSequence>()  => userdata_to_dom!(value as ColorSequence  => dom::ColorSequence),
-                value if value.is::<Enum>()           => userdata_to_dom!(value as EnumItem       => dom::Enum),
+                value if value.is::<EnumItem>()       => userdata_to_dom!(value as EnumItem       => dom::EnumItem),
                 value if value.is::<Faces>()          => userdata_to_dom!(value as Faces          => dom::Faces),
                 value if value.is::<Font>()           => userdata_to_dom!(value as Font           => dom::Font),
+                value if value.is::<Instance>()       => userdata_to_dom!(value as Instance       => dom::Ref),
                 value if value.is::<NumberRange>()    => userdata_to_dom!(value as NumberRange    => dom::NumberRange),
                 value if value.is::<NumberSequence>() => userdata_to_dom!(value as NumberSequence => dom::NumberSequence),
                 value if value.is::<Ray>()            => userdata_to_dom!(value as Ray            => dom::Ray),
                 value if value.is::<Rect>()           => userdata_to_dom!(value as Rect           => dom::Rect),
-                value if value.is::<Instance>()       => userdata_to_dom!(value as Instance       => dom::Ref),
                 value if value.is::<Region3>()        => userdata_to_dom!(value as Region3        => dom::Region3),
                 value if value.is::<Region3int16>()   => userdata_to_dom!(value as Region3int16   => dom::Region3int16),
                 value if value.is::<UDim>()           => userdata_to_dom!(value as UDim           => dom::UDim),

crates/lune-roblox/src/datatypes/extension.rs

@@ -1,13 +1,15 @@
 use super::*;
 
-pub(super) trait DomValueExt {
-    fn variant_name(&self) -> &'static str;
+pub(crate) trait DomValueExt {
+    fn variant_name(&self) -> Option<&'static str>;
 }
 
 impl DomValueExt for DomType {
-    fn variant_name(&self) -> &'static str {
+    fn variant_name(&self) -> Option<&'static str> {
+        #[allow(clippy::enum_glob_use)]
         use DomType::*;
-        match self {
+        Some(match self {
+            Attributes => "Attributes",
             Axes => "Axes",
             BinaryString => "BinaryString",
             Bool => "Bool",
@@ -17,12 +19,16 @@ impl DomValueExt for DomType {
             Color3uint8 => "Color3uint8",
             ColorSequence => "ColorSequence",
             Content => "Content",
+            ContentId => "ContentId",
             Enum => "Enum",
+            EnumItem => "EnumItem",
             Faces => "Faces",
             Float32 => "Float32",
             Float64 => "Float64",
+            Font => "Font",
             Int32 => "Int32",
             Int64 => "Int64",
+            MaterialColors => "MaterialColors",
             NumberRange => "NumberRange",
             NumberSequence => "NumberSequence",
             PhysicalProperties => "PhysicalProperties",
@@ -33,20 +39,23 @@ impl DomValueExt for DomType {
             Region3int16 => "Region3int16",
             SharedString => "SharedString",
             String => "String",
+            Tags => "Tags",
             UDim => "UDim",
             UDim2 => "UDim2",
+            UniqueId => "UniqueId",
             Vector2 => "Vector2",
             Vector2int16 => "Vector2int16",
             Vector3 => "Vector3",
             Vector3int16 => "Vector3int16",
             OptionalCFrame => "OptionalCFrame",
-            _ => "?",
-        }
+            SecurityCapabilities => "SecurityCapabilities",
+            _ => return None,
+        })
     }
 }
 
 impl DomValueExt for DomValue {
-    fn variant_name(&self) -> &'static str {
+    fn variant_name(&self) -> Option<&'static str> {
         self.ty().variant_name()
     }
 }

crates/lune-roblox/src/datatypes/mod.rs

@@ -6,6 +6,8 @@ pub mod extension;
 pub mod result;
 pub mod types;
 
+mod util;
+
 use result::*;
 
 pub use crate::shared::userdata::*;

crates/lune-roblox/src/datatypes/types/axes.rs

@@ -3,6 +3,10 @@ use core::fmt;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Axes as DomAxes;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, EnumItem};
 
 /**
@@ -17,53 +21,57 @@ pub struct Axes {
     pub(crate) z: bool,
 }
 
-impl Axes {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, args: LuaMultiValue| {
-                let mut x = false;
-                let mut y = false;
-                let mut z = false;
-                let mut check = |e: &EnumItem| {
-                    if e.parent.desc.name == "Axis" {
-                        match &e.name {
-                            name if name == "X" => x = true,
-                            name if name == "Y" => y = true,
-                            name if name == "Z" => z = true,
-                            _ => {}
-                        }
-                    } else if e.parent.desc.name == "NormalId" {
-                        match &e.name {
-                            name if name == "Left" || name == "Right" => x = true,
-                            name if name == "Top" || name == "Bottom" => y = true,
-                            name if name == "Front" || name == "Back" => z = true,
-                            _ => {}
-                        }
+impl LuaExportsTable<'_> for Axes {
+    const EXPORT_NAME: &'static str = "Axes";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let axes_new = |_, args: LuaMultiValue| {
+            let mut x = false;
+            let mut y = false;
+            let mut z = false;
+
+            let mut check = |e: &EnumItem| {
+                if e.parent.desc.name == "Axis" {
+                    match &e.name {
+                        name if name == "X" => x = true,
+                        name if name == "Y" => y = true,
+                        name if name == "Z" => z = true,
+                        _ => {}
                     }
-                };
-                for (index, arg) in args.into_iter().enumerate() {
-                    if let LuaValue::UserData(u) = arg {
-                        if let Ok(e) = u.borrow::<EnumItem>() {
-                            check(&e);
-                        } else {
-                            return Err(LuaError::RuntimeError(format!(
-                                "Expected argument #{} to be an EnumItem, got userdata",
-                                index
-                            )));
-                        }
-                    } else {
-                        return Err(LuaError::RuntimeError(format!(
-                            "Expected argument #{} to be an EnumItem, got {}",
-                            index,
-                            arg.type_name()
-                        )));
+                } else if e.parent.desc.name == "NormalId" {
+                    match &e.name {
+                        name if name == "Left" || name == "Right" => x = true,
+                        name if name == "Top" || name == "Bottom" => y = true,
+                        name if name == "Front" || name == "Back" => z = true,
+                        _ => {}
                     }
                 }
-                Ok(Axes { x, y, z })
-            })?,
-        )?;
-        Ok(())
+            };
+
+            for (index, arg) in args.into_iter().enumerate() {
+                if let LuaValue::UserData(u) = arg {
+                    if let Ok(e) = u.borrow::<EnumItem>() {
+                        check(&e);
+                    } else {
+                        return Err(LuaError::RuntimeError(format!(
+                            "Expected argument #{index} to be an EnumItem, got userdata",
+                        )));
+                    }
+                } else {
+                    return Err(LuaError::RuntimeError(format!(
+                        "Expected argument #{} to be an EnumItem, got {}",
+                        index,
+                        arg.type_name()
+                    )));
+                }
+            }
+
+            Ok(Axes { x, y, z })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", axes_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/brick_color.rs

@@ -4,12 +4,16 @@ use mlua::prelude::*;
 use rand::seq::SliceRandom;
 use rbx_dom_weak::types::BrickColor as DomBrickColor;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, Color3};
 
 /**
     An implementation of the [BrickColor](https://create.roblox.com/docs/reference/engine/datatypes/BrickColor) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the BrickColor class as of March 2023.
+    This implements all documented properties, methods & constructors of the `BrickColor` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct BrickColor {
@@ -20,57 +24,58 @@ pub struct BrickColor {
     pub(crate) rgb: (u8, u8, u8),
 }
 
-impl BrickColor {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
+impl LuaExportsTable<'_> for BrickColor {
+    const EXPORT_NAME: &'static str = "BrickColor";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
         type ArgsNumber = u16;
         type ArgsName = String;
         type ArgsRgb = (u8, u8, u8);
-        type ArgsColor3 = Color3;
-        datatype_table.set(
-            "new",
-            lua.create_function(|lua, args: LuaMultiValue| {
-                if let Ok(number) = ArgsNumber::from_lua_multi(args.clone(), lua) {
-                    Ok(color_from_number(number))
-                } else if let Ok(name) = ArgsName::from_lua_multi(args.clone(), lua) {
-                    Ok(color_from_name(name))
-                } else if let Ok((r, g, b)) = ArgsRgb::from_lua_multi(args.clone(), lua) {
-                    Ok(color_from_rgb(r, g, b))
-                } else if let Ok(color) = ArgsColor3::from_lua_multi(args.clone(), lua) {
-                    Ok(Self::from(color))
-                } else {
-                    // FUTURE: Better error message here using given arg types
-                    Err(LuaError::RuntimeError(
-                        "Invalid arguments to constructor".to_string(),
-                    ))
-                }
-            })?,
-        )?;
-        datatype_table.set(
-            "palette",
-            lua.create_function(|_, index: u16| {
-                if index == 0 {
-                    Err(LuaError::RuntimeError("Invalid index".to_string()))
-                } else if let Some(number) = BRICK_COLOR_PALETTE.get((index - 1) as usize) {
-                    Ok(color_from_number(*number))
-                } else {
-                    Err(LuaError::RuntimeError("Invalid index".to_string()))
-                }
-            })?,
-        )?;
-        datatype_table.set(
-            "random",
-            lua.create_function(|_, ()| {
-                let number = BRICK_COLOR_PALETTE.choose(&mut rand::thread_rng());
-                Ok(color_from_number(*number.unwrap()))
-            })?,
-        )?;
+        type ArgsColor3<'lua> = LuaUserDataRef<'lua, Color3>;
+
+        let brick_color_new = |lua, args: LuaMultiValue| {
+            if let Ok(number) = ArgsNumber::from_lua_multi(args.clone(), lua) {
+                Ok(color_from_number(number))
+            } else if let Ok(name) = ArgsName::from_lua_multi(args.clone(), lua) {
+                Ok(color_from_name(name))
+            } else if let Ok((r, g, b)) = ArgsRgb::from_lua_multi(args.clone(), lua) {
+                Ok(color_from_rgb(r, g, b))
+            } else if let Ok(color) = ArgsColor3::from_lua_multi(args.clone(), lua) {
+                Ok(Self::from(*color))
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        let brick_color_palette = |_, index: u16| {
+            if index == 0 {
+                Err(LuaError::RuntimeError("Invalid index".to_string()))
+            } else if let Some(number) = BRICK_COLOR_PALETTE.get((index - 1) as usize) {
+                Ok(color_from_number(*number))
+            } else {
+                Err(LuaError::RuntimeError("Invalid index".to_string()))
+            }
+        };
+
+        let brick_color_random = |_, ()| {
+            let number = BRICK_COLOR_PALETTE.choose(&mut rand::thread_rng());
+            Ok(color_from_number(*number.unwrap()))
+        };
+
+        let mut builder = TableBuilder::new(lua)?
+            .with_function("new", brick_color_new)?
+            .with_function("palette", brick_color_palette)?
+            .with_function("random", brick_color_random)?;
+
         for (name, number) in BRICK_COLOR_CONSTRUCTORS {
-            datatype_table.set(
-                *name,
-                lua.create_function(|_, ()| Ok(color_from_number(*number)))?,
-            )?;
+            let f = |_, ()| Ok(color_from_number(*number));
+            builder = builder.with_function(*name, f)?;
         }
-        Ok(())
+
+        builder.build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/cframe.rs

@@ -0,0 +1,493 @@
+#![allow(clippy::items_after_statements)]
+
+use core::fmt;
+use std::ops;
+
+use glam::{EulerRot, Mat3, Mat4, Quat, Vec3};
+use mlua::{prelude::*, Variadic};
+use rbx_dom_weak::types::{CFrame as DomCFrame, Matrix3 as DomMatrix3, Vector3 as DomVector3};
+
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
+use super::{super::*, Vector3};
+
+/**
+    An implementation of the [CFrame](https://create.roblox.com/docs/reference/engine/datatypes/CFrame)
+    Roblox datatype, backed by [`glam::Mat4`].
+
+    This implements all documented properties, methods &
+    constructors of the `CFrame` class as of March 2023.
+*/
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct CFrame(pub Mat4);
+
+impl CFrame {
+    pub const IDENTITY: Self = Self(Mat4::IDENTITY);
+
+    fn position(&self) -> Vec3 {
+        self.0.w_axis.truncate()
+    }
+
+    fn orientation(&self) -> Mat3 {
+        Mat3::from_cols(
+            self.0.x_axis.truncate(),
+            self.0.y_axis.truncate(),
+            self.0.z_axis.truncate(),
+        )
+    }
+
+    fn inverse(&self) -> Self {
+        Self(self.0.inverse())
+    }
+}
+
+impl LuaExportsTable<'_> for CFrame {
+    const EXPORT_NAME: &'static str = "CFrame";
+
+    #[allow(clippy::too_many_lines)]
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let cframe_angles = |_, (rx, ry, rz): (f32, f32, f32)| {
+            Ok(CFrame(Mat4::from_euler(EulerRot::XYZ, rx, ry, rz)))
+        };
+
+        let cframe_from_axis_angle =
+            |_, (v, r): (LuaUserDataRef<Vector3>, f32)| Ok(CFrame(Mat4::from_axis_angle(v.0, r)));
+
+        let cframe_from_euler_angles_xyz = |_, (rx, ry, rz): (f32, f32, f32)| {
+            Ok(CFrame(Mat4::from_euler(EulerRot::XYZ, rx, ry, rz)))
+        };
+
+        let cframe_from_euler_angles_yxz = |_, (rx, ry, rz): (f32, f32, f32)| {
+            Ok(CFrame(Mat4::from_euler(EulerRot::YXZ, ry, rx, rz)))
+        };
+
+        let cframe_from_matrix = |_,
+                                  (pos, rx, ry, rz): (
+            LuaUserDataRef<Vector3>,
+            LuaUserDataRef<Vector3>,
+            LuaUserDataRef<Vector3>,
+            Option<LuaUserDataRef<Vector3>>,
+        )| {
+            Ok(CFrame(Mat4::from_cols(
+                rx.0.extend(0.0),
+                ry.0.extend(0.0),
+                rz.map_or_else(|| rx.0.cross(ry.0).normalize(), |r| r.0)
+                    .extend(0.0),
+                pos.0.extend(1.0),
+            )))
+        };
+
+        let cframe_from_orientation = |_, (rx, ry, rz): (f32, f32, f32)| {
+            Ok(CFrame(Mat4::from_euler(EulerRot::YXZ, ry, rx, rz)))
+        };
+
+        let cframe_look_at = |_,
+                              (from, to, up): (
+            LuaUserDataRef<Vector3>,
+            LuaUserDataRef<Vector3>,
+            Option<LuaUserDataRef<Vector3>>,
+        )| {
+            Ok(CFrame(look_at(
+                from.0,
+                to.0,
+                up.as_deref().unwrap_or(&Vector3(Vec3::Y)).0,
+            )))
+        };
+
+        // Dynamic args constructor
+        type ArgsPos<'lua> = LuaUserDataRef<'lua, Vector3>;
+        type ArgsLook<'lua> = (
+            LuaUserDataRef<'lua, Vector3>,
+            LuaUserDataRef<'lua, Vector3>,
+            Option<LuaUserDataRef<'lua, Vector3>>,
+        );
+
+        type ArgsPosXYZ = (f32, f32, f32);
+        type ArgsPosXYZQuat = (f32, f32, f32, f32, f32, f32, f32);
+        type ArgsMatrix = (f32, f32, f32, f32, f32, f32, f32, f32, f32, f32, f32, f32);
+
+        let cframe_new = |lua, args: LuaMultiValue| match args.len() {
+            0 => Ok(CFrame(Mat4::IDENTITY)),
+
+            1 => match ArgsPos::from_lua_multi(args, lua) {
+                Ok(pos) => Ok(CFrame(Mat4::from_translation(pos.0))),
+                Err(err) => Err(err),
+            },
+
+            3 => {
+                if let Ok((from, to, up)) = ArgsLook::from_lua_multi(args.clone(), lua) {
+                    Ok(CFrame(look_at(
+                        from.0,
+                        to.0,
+                        up.as_deref().unwrap_or(&Vector3(Vec3::Y)).0,
+                    )))
+                } else if let Ok((x, y, z)) = ArgsPosXYZ::from_lua_multi(args, lua) {
+                    Ok(CFrame(Mat4::from_translation(Vec3::new(x, y, z))))
+                } else {
+                    // TODO: Make this error message better
+                    Err(LuaError::RuntimeError(
+                        "Invalid arguments to constructor".to_string(),
+                    ))
+                }
+            }
+
+            7 => match ArgsPosXYZQuat::from_lua_multi(args, lua) {
+                Ok((x, y, z, qx, qy, qz, qw)) => Ok(CFrame(Mat4::from_rotation_translation(
+                    Quat::from_array([qx, qy, qz, qw]),
+                    Vec3::new(x, y, z),
+                ))),
+                Err(err) => Err(err),
+            },
+
+            12 => match ArgsMatrix::from_lua_multi(args, lua) {
+                Ok((x, y, z, r00, r01, r02, r10, r11, r12, r20, r21, r22)) => {
+                    Ok(CFrame(Mat4::from_cols_array_2d(&[
+                        [r00, r10, r20, 0.0],
+                        [r01, r11, r21, 0.0],
+                        [r02, r12, r22, 0.0],
+                        [x, y, z, 1.0],
+                    ])))
+                }
+                Err(err) => Err(err),
+            },
+
+            _ => Err(LuaError::RuntimeError(format!(
+                "Invalid number of arguments: expected 0, 1, 3, 7, or 12, got {}",
+                args.len()
+            ))),
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("Angles", cframe_angles)?
+            .with_value("identity", CFrame(Mat4::IDENTITY))?
+            .with_function("fromAxisAngle", cframe_from_axis_angle)?
+            .with_function("fromEulerAnglesXYZ", cframe_from_euler_angles_xyz)?
+            .with_function("fromEulerAnglesYXZ", cframe_from_euler_angles_yxz)?
+            .with_function("fromMatrix", cframe_from_matrix)?
+            .with_function("fromOrientation", cframe_from_orientation)?
+            .with_function("lookAt", cframe_look_at)?
+            .with_function("new", cframe_new)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for CFrame {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Position", |_, this| Ok(Vector3(this.position())));
+        fields.add_field_method_get("Rotation", |_, this| {
+            Ok(CFrame(Mat4::from_cols(
+                this.0.x_axis,
+                this.0.y_axis,
+                this.0.z_axis,
+                Vec3::ZERO.extend(1.0),
+            )))
+        });
+        fields.add_field_method_get("X", |_, this| Ok(this.position().x));
+        fields.add_field_method_get("Y", |_, this| Ok(this.position().y));
+        fields.add_field_method_get("Z", |_, this| Ok(this.position().z));
+        fields.add_field_method_get("XVector", |_, this| Ok(Vector3(this.orientation().x_axis)));
+        fields.add_field_method_get("YVector", |_, this| Ok(Vector3(this.orientation().y_axis)));
+        fields.add_field_method_get("ZVector", |_, this| Ok(Vector3(this.orientation().z_axis)));
+        fields.add_field_method_get("RightVector", |_, this| {
+            Ok(Vector3(this.orientation().x_axis))
+        });
+        fields.add_field_method_get("UpVector", |_, this| Ok(Vector3(this.orientation().y_axis)));
+        fields.add_field_method_get("LookVector", |_, this| {
+            Ok(Vector3(-this.orientation().z_axis))
+        });
+    }
+
+    #[allow(clippy::too_many_lines)]
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        // Methods
+        methods.add_method("Inverse", |_, this, ()| Ok(this.inverse()));
+        methods.add_method(
+            "Lerp",
+            |_, this, (goal, alpha): (LuaUserDataRef<CFrame>, f32)| {
+                let quat_this = Quat::from_mat4(&this.0);
+                let quat_goal = Quat::from_mat4(&goal.0);
+                let translation = this
+                    .0
+                    .w_axis
+                    .truncate()
+                    .lerp(goal.0.w_axis.truncate(), alpha);
+                let rotation = quat_this.slerp(quat_goal, alpha);
+                Ok(CFrame(Mat4::from_rotation_translation(
+                    rotation,
+                    translation,
+                )))
+            },
+        );
+        methods.add_method("Orthonormalize", |_, this, ()| {
+            let rotation = Quat::from_mat4(&this.0);
+            let translation = this.0.w_axis.truncate();
+            Ok(CFrame(Mat4::from_rotation_translation(
+                rotation.normalize(),
+                translation,
+            )))
+        });
+        methods.add_method(
+            "ToWorldSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<CFrame>>| {
+                Ok(rhs
+                    .into_iter()
+                    .map(|cf| *this * *cf)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        methods.add_method(
+            "ToObjectSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<CFrame>>| {
+                let inverse = this.inverse();
+                Ok(rhs
+                    .into_iter()
+                    .map(|cf| inverse * *cf)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        methods.add_method(
+            "PointToWorldSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<Vector3>>| {
+                Ok(rhs
+                    .into_iter()
+                    .map(|v3| *this * *v3)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        methods.add_method(
+            "PointToObjectSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<Vector3>>| {
+                let inverse = this.inverse();
+                Ok(rhs
+                    .into_iter()
+                    .map(|v3| inverse * *v3)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        methods.add_method(
+            "VectorToWorldSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<Vector3>>| {
+                let result = *this - Vector3(this.position());
+                Ok(rhs
+                    .into_iter()
+                    .map(|v3| result * *v3)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        methods.add_method(
+            "VectorToObjectSpace",
+            |_, this, rhs: Variadic<LuaUserDataRef<Vector3>>| {
+                let inverse = this.inverse();
+                let result = inverse - Vector3(inverse.position());
+                Ok(rhs
+                    .into_iter()
+                    .map(|v3| result * *v3)
+                    .collect::<Variadic<_>>())
+            },
+        );
+        #[rustfmt::skip]
+        methods.add_method("GetComponents", |_, this, ()| {
+            let pos = this.position();
+            let transposed = this.orientation().transpose();
+            Ok((
+                pos.x,               pos.y,                 pos.z,
+                transposed.x_axis.x, transposed.x_axis.y,   transposed.x_axis.z,
+                transposed.y_axis.x, transposed.y_axis.y,   transposed.y_axis.z,
+                transposed.z_axis.x, transposed.z_axis.y,   transposed.z_axis.z,
+            ))
+        });
+        methods.add_method("ToEulerAnglesXYZ", |_, this, ()| {
+            Ok(Quat::from_mat4(&this.0).to_euler(EulerRot::XYZ))
+        });
+        methods.add_method("ToEulerAnglesYXZ", |_, this, ()| {
+            let (ry, rx, rz) = Quat::from_mat4(&this.0).to_euler(EulerRot::YXZ);
+            Ok((rx, ry, rz))
+        });
+        methods.add_method("ToOrientation", |_, this, ()| {
+            let (ry, rx, rz) = Quat::from_mat4(&this.0).to_euler(EulerRot::YXZ);
+            Ok((rx, ry, rz))
+        });
+        methods.add_method("ToAxisAngle", |_, this, ()| {
+            let (axis, angle) = Quat::from_mat4(&this.0).to_axis_angle();
+            Ok((Vector3(axis), angle))
+        });
+        // Metamethods
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+        methods.add_meta_method(LuaMetaMethod::Mul, |lua, this, rhs: LuaValue| {
+            if let LuaValue::UserData(ud) = &rhs {
+                if let Ok(cf) = ud.borrow::<CFrame>() {
+                    return lua.create_userdata(*this * *cf);
+                } else if let Ok(vec) = ud.borrow::<Vector3>() {
+                    return lua.create_userdata(*this * *vec);
+                }
+            };
+            Err(LuaError::FromLuaConversionError {
+                from: rhs.type_name(),
+                to: "userdata",
+                message: Some(format!(
+                    "Expected CFrame or Vector3, got {}",
+                    rhs.type_name()
+                )),
+            })
+        });
+        methods.add_meta_method(
+            LuaMetaMethod::Add,
+            |_, this, vec: LuaUserDataRef<Vector3>| Ok(*this + *vec),
+        );
+        methods.add_meta_method(
+            LuaMetaMethod::Sub,
+            |_, this, vec: LuaUserDataRef<Vector3>| Ok(*this - *vec),
+        );
+    }
+}
+
+impl fmt::Display for CFrame {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let pos = self.position();
+        let transposed = self.orientation().transpose();
+        write!(
+            f,
+            "{}, {}, {}, {}",
+            Vector3(pos),
+            Vector3(transposed.x_axis),
+            Vector3(transposed.y_axis),
+            Vector3(transposed.z_axis)
+        )
+    }
+}
+
+impl ops::Mul for CFrame {
+    type Output = Self;
+    fn mul(self, rhs: Self) -> Self::Output {
+        CFrame(self.0 * rhs.0)
+    }
+}
+
+impl ops::Mul<Vector3> for CFrame {
+    type Output = Vector3;
+    fn mul(self, rhs: Vector3) -> Self::Output {
+        Vector3(self.0.project_point3(rhs.0))
+    }
+}
+
+impl ops::Add<Vector3> for CFrame {
+    type Output = Self;
+    fn add(self, rhs: Vector3) -> Self::Output {
+        CFrame(Mat4::from_cols(
+            self.0.x_axis,
+            self.0.y_axis,
+            self.0.z_axis,
+            self.0.w_axis + rhs.0.extend(0.0),
+        ))
+    }
+}
+
+impl ops::Sub<Vector3> for CFrame {
+    type Output = Self;
+    fn sub(self, rhs: Vector3) -> Self::Output {
+        CFrame(Mat4::from_cols(
+            self.0.x_axis,
+            self.0.y_axis,
+            self.0.z_axis,
+            self.0.w_axis - rhs.0.extend(0.0),
+        ))
+    }
+}
+
+impl From<DomCFrame> for CFrame {
+    fn from(v: DomCFrame) -> Self {
+        let transposed = v.orientation.transpose();
+        CFrame(Mat4::from_cols(
+            Vector3::from(transposed.x).0.extend(0.0),
+            Vector3::from(transposed.y).0.extend(0.0),
+            Vector3::from(transposed.z).0.extend(0.0),
+            Vector3::from(v.position).0.extend(1.0),
+        ))
+    }
+}
+
+impl From<CFrame> for DomCFrame {
+    fn from(v: CFrame) -> Self {
+        let transposed = v.orientation().transpose();
+        DomCFrame {
+            position: DomVector3::from(Vector3(v.position())),
+            orientation: DomMatrix3::new(
+                DomVector3::from(Vector3(transposed.x_axis)),
+                DomVector3::from(Vector3(transposed.y_axis)),
+                DomVector3::from(Vector3(transposed.z_axis)),
+            ),
+        }
+    }
+}
+
+/**
+    Creates a matrix at the position `from`, looking towards `to`.
+
+    [`glam`] does provide functions such as [`look_at_lh`], [`look_at_rh`] and more but
+    they all create view matrices for camera transforms which is not what we want here.
+*/
+fn look_at(from: Vec3, to: Vec3, up: Vec3) -> Mat4 {
+    let dir = (to - from).normalize();
+    let xaxis = up.cross(dir).normalize();
+    let yaxis = dir.cross(xaxis).normalize();
+
+    Mat4::from_cols(
+        Vec3::new(xaxis.x, yaxis.x, dir.x).extend(0.0),
+        Vec3::new(xaxis.y, yaxis.y, dir.y).extend(0.0),
+        Vec3::new(xaxis.z, yaxis.z, dir.z).extend(0.0),
+        from.extend(1.0),
+    )
+}
+
+#[cfg(test)]
+mod cframe_test {
+    use glam::{Mat4, Vec3};
+    use rbx_dom_weak::types::{CFrame as DomCFrame, Matrix3 as DomMatrix3, Vector3 as DomVector3};
+
+    use super::CFrame;
+
+    #[test]
+    fn dom_cframe_from_cframe() {
+        let dom_cframe = DomCFrame::new(
+            DomVector3::new(1.0, 2.0, 3.0),
+            DomMatrix3::new(
+                DomVector3::new(1.0, 2.0, 3.0),
+                DomVector3::new(1.0, 2.0, 3.0),
+                DomVector3::new(1.0, 2.0, 3.0),
+            ),
+        );
+
+        let cframe = CFrame(Mat4::from_cols(
+            Vec3::new(1.0, 1.0, 1.0).extend(0.0),
+            Vec3::new(2.0, 2.0, 2.0).extend(0.0),
+            Vec3::new(3.0, 3.0, 3.0).extend(0.0),
+            Vec3::new(1.0, 2.0, 3.0).extend(1.0),
+        ));
+
+        assert_eq!(CFrame::from(dom_cframe), cframe);
+    }
+
+    #[test]
+    fn cframe_from_dom_cframe() {
+        let cframe = CFrame(Mat4::from_cols(
+            Vec3::new(1.0, 2.0, 3.0).extend(0.0),
+            Vec3::new(1.0, 2.0, 3.0).extend(0.0),
+            Vec3::new(1.0, 2.0, 3.0).extend(0.0),
+            Vec3::new(1.0, 2.0, 3.0).extend(1.0),
+        ));
+
+        let dom_cframe = DomCFrame::new(
+            DomVector3::new(1.0, 2.0, 3.0),
+            DomMatrix3::new(
+                DomVector3::new(1.0, 1.0, 1.0),
+                DomVector3::new(2.0, 2.0, 2.0),
+                DomVector3::new(3.0, 3.0, 3.0),
+            ),
+        );
+
+        assert_eq!(DomCFrame::from(cframe), dom_cframe);
+    }
+}

crates/lune-roblox/src/datatypes/types/color3.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::many_single_char_names)]
+
 use core::fmt;
 use std::ops;
 
@@ -5,6 +7,10 @@ use glam::Vec3;
 use mlua::prelude::*;
 use rbx_dom_weak::types::{Color3 as DomColor3, Color3uint8 as DomColor3uint8};
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
@@ -22,88 +28,100 @@ pub struct Color3 {
     pub(crate) b: f32,
 }
 
-impl Color3 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (r, g, b): (Option<f32>, Option<f32>, Option<f32>)| {
-                Ok(Color3 {
-                    r: r.unwrap_or_default(),
-                    g: g.unwrap_or_default(),
-                    b: b.unwrap_or_default(),
-                })
-            })?,
-        )?;
-        datatype_table.set(
-            "fromRGB",
-            lua.create_function(|_, (r, g, b): (Option<u8>, Option<u8>, Option<u8>)| {
-                Ok(Color3 {
-                    r: (r.unwrap_or_default() as f32) / 255f32,
-                    g: (g.unwrap_or_default() as f32) / 255f32,
-                    b: (b.unwrap_or_default() as f32) / 255f32,
-                })
-            })?,
-        )?;
-        datatype_table.set(
-            "fromHSV",
-            lua.create_function(|_, (h, s, v): (f32, f32, f32)| {
-                // https://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c
-                let i = (h * 6.0).floor();
-                let f = h * 6.0 - i;
-                let p = v * (1.0 - s);
-                let q = v * (1.0 - f * s);
-                let t = v * (1.0 - (1.0 - f) * s);
+impl LuaExportsTable<'_> for Color3 {
+    const EXPORT_NAME: &'static str = "Color3";
 
-                let (r, g, b) = match (i % 6.0) as u8 {
-                    0 => (v, t, p),
-                    1 => (q, v, p),
-                    2 => (p, v, t),
-                    3 => (p, q, v),
-                    4 => (t, p, v),
-                    5 => (v, p, q),
-                    _ => unreachable!(),
-                };
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let color3_from_rgb = |_, (r, g, b): (Option<u8>, Option<u8>, Option<u8>)| {
+            Ok(Color3 {
+                r: (r.unwrap_or_default() as f32) / 255f32,
+                g: (g.unwrap_or_default() as f32) / 255f32,
+                b: (b.unwrap_or_default() as f32) / 255f32,
+            })
+        };
 
-                Ok(Color3 { r, g, b })
-            })?,
-        )?;
-        datatype_table.set(
-            "fromHex",
-            lua.create_function(|_, hex: String| {
-                let trimmed = hex.trim_start_matches('#').to_ascii_uppercase();
-                let chars = if trimmed.len() == 3 {
-                    (
-                        u8::from_str_radix(&trimmed[..1].repeat(2), 16),
-                        u8::from_str_radix(&trimmed[1..2].repeat(2), 16),
-                        u8::from_str_radix(&trimmed[2..3].repeat(2), 16),
-                    )
-                } else if trimmed.len() == 6 {
-                    (
-                        u8::from_str_radix(&trimmed[..2], 16),
-                        u8::from_str_radix(&trimmed[2..4], 16),
-                        u8::from_str_radix(&trimmed[4..6], 16),
-                    )
-                } else {
-                    return Err(LuaError::RuntimeError(format!(
-                        "Hex color string must be 3 or 6 characters long, got {} character{}",
-                        trimmed.len(),
-                        if trimmed.len() == 1 { "" } else { "s" }
-                    )));
-                };
-                match chars {
-                    (Ok(r), Ok(g), Ok(b)) => Ok(Color3 {
-                        r: (r as f32) / 255f32,
-                        g: (g as f32) / 255f32,
-                        b: (b as f32) / 255f32,
-                    }),
-                    _ => Err(LuaError::RuntimeError(format!(
-                        "Hex color string '{}' contains invalid character",
-                        trimmed
-                    ))),
-                }
-            })?,
-        )?;
-        Ok(())
+        let color3_from_hsv = |_, (h, s, v): (f32, f32, f32)| {
+            // https://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c
+            let i = (h * 6.0).floor();
+            let f = h * 6.0 - i;
+            let p = v * (1.0 - s);
+            let q = v * (1.0 - f * s);
+            let t = v * (1.0 - (1.0 - f) * s);
+
+            let (r, g, b) = match (i % 6.0) as u8 {
+                0 => (v, t, p),
+                1 => (q, v, p),
+                2 => (p, v, t),
+                3 => (p, q, v),
+                4 => (t, p, v),
+                5 => (v, p, q),
+                _ => unreachable!(),
+            };
+
+            Ok(Color3 { r, g, b })
+        };
+
+        let color3_from_hex = |_, hex: String| {
+            let trimmed = hex.trim_start_matches('#').to_ascii_uppercase();
+            let chars = if trimmed.len() == 3 {
+                (
+                    u8::from_str_radix(&trimmed[..1].repeat(2), 16),
+                    u8::from_str_radix(&trimmed[1..2].repeat(2), 16),
+                    u8::from_str_radix(&trimmed[2..3].repeat(2), 16),
+                )
+            } else if trimmed.len() == 6 {
+                (
+                    u8::from_str_radix(&trimmed[..2], 16),
+                    u8::from_str_radix(&trimmed[2..4], 16),
+                    u8::from_str_radix(&trimmed[4..6], 16),
+                )
+            } else {
+                return Err(LuaError::RuntimeError(format!(
+                    "Hex color string must be 3 or 6 characters long, got {} character{}",
+                    trimmed.len(),
+                    if trimmed.len() == 1 { "" } else { "s" }
+                )));
+            };
+            match chars {
+                (Ok(r), Ok(g), Ok(b)) => Ok(Color3 {
+                    r: (r as f32) / 255f32,
+                    g: (g as f32) / 255f32,
+                    b: (b as f32) / 255f32,
+                }),
+                _ => Err(LuaError::RuntimeError(format!(
+                    "Hex color string '{trimmed}' contains invalid character",
+                ))),
+            }
+        };
+
+        let color3_new = |_, (r, g, b): (Option<f32>, Option<f32>, Option<f32>)| {
+            Ok(Color3 {
+                r: r.unwrap_or_default(),
+                g: g.unwrap_or_default(),
+                b: b.unwrap_or_default(),
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("fromRGB", color3_from_rgb)?
+            .with_function("fromHSV", color3_from_hsv)?
+            .with_function("fromHex", color3_from_hex)?
+            .with_function("new", color3_new)?
+            .build_readonly()
+    }
+}
+
+impl<'lua> FromLua<'lua> for Color3 {
+    fn from_lua(value: LuaValue<'lua>, _: &'lua Lua) -> LuaResult<Self> {
+        if let LuaValue::UserData(ud) = value {
+            Ok(*ud.borrow::<Color3>()?)
+        } else {
+            Err(LuaError::FromLuaConversionError {
+                from: value.type_name(),
+                to: "Color3",
+                message: None,
+            })
+        }
     }
 }
 
@@ -116,16 +134,19 @@ impl LuaUserData for Color3 {
 
     fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
         // Methods
-        methods.add_method("Lerp", |_, this, (rhs, alpha): (Color3, f32)| {
-            let v3_this = Vec3::new(this.r, this.g, this.b);
-            let v3_rhs = Vec3::new(rhs.r, rhs.g, rhs.b);
-            let v3 = v3_this.lerp(v3_rhs, alpha);
-            Ok(Color3 {
-                r: v3.x,
-                g: v3.y,
-                b: v3.z,
-            })
-        });
+        methods.add_method(
+            "Lerp",
+            |_, this, (rhs, alpha): (LuaUserDataRef<Color3>, f32)| {
+                let v3_this = Vec3::new(this.r, this.g, this.b);
+                let v3_rhs = Vec3::new(rhs.r, rhs.g, rhs.b);
+                let v3 = v3_this.lerp(v3_rhs, alpha);
+                Ok(Color3 {
+                    r: v3.x,
+                    g: v3.y,
+                    b: v3.z,
+                })
+            },
+        );
         methods.add_method("ToHSV", |_, this, ()| {
             // https://axonflux.com/handy-rgb-to-hsl-and-rgb-to-hsv-color-model-c
             let (r, g, b) = (this.r, this.g, this.b);
@@ -133,6 +154,7 @@ impl LuaUserData for Color3 {
             let max = r.max(g).max(b);
             let diff = max - min;
 
+            #[allow(clippy::float_cmp)]
             let hue = (match max {
                 max if max == min => 0.0,
                 max if max == r => (g - b) / diff + (if g < b { 6.0 } else { 0.0 }),
@@ -283,20 +305,12 @@ impl From<Color3> for DomColor3 {
 
 impl From<DomColor3uint8> for Color3 {
     fn from(v: DomColor3uint8) -> Self {
-        Self {
-            r: (v.r as f32) / 255f32,
-            g: (v.g as f32) / 255f32,
-            b: (v.b as f32) / 255f32,
-        }
+        Color3::from(DomColor3::from(v))
     }
 }
 
 impl From<Color3> for DomColor3uint8 {
     fn from(v: Color3) -> Self {
-        Self {
-            r: v.r.clamp(u8::MIN as f32, u8::MAX as f32) as u8,
-            g: v.g.clamp(u8::MIN as f32, u8::MAX as f32) as u8,
-            b: v.b.clamp(u8::MIN as f32, u8::MAX as f32) as u8,
-        }
+        DomColor3uint8::from(DomColor3::from(v))
     }
 }

crates/lune-roblox/src/datatypes/types/color_sequence.rs

@@ -0,0 +1,125 @@
+use core::fmt;
+
+use mlua::prelude::*;
+use rbx_dom_weak::types::{
+    ColorSequence as DomColorSequence, ColorSequenceKeypoint as DomColorSequenceKeypoint,
+};
+
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
+use super::{super::*, Color3, ColorSequenceKeypoint};
+
+/**
+    An implementation of the [ColorSequence](https://create.roblox.com/docs/reference/engine/datatypes/ColorSequence) Roblox datatype.
+
+    This implements all documented properties, methods & constructors of the `ColorSequence` class as of March 2023.
+*/
+#[derive(Debug, Clone, PartialEq)]
+pub struct ColorSequence {
+    pub(crate) keypoints: Vec<ColorSequenceKeypoint>,
+}
+
+impl LuaExportsTable<'_> for ColorSequence {
+    const EXPORT_NAME: &'static str = "ColorSequence";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        type ArgsColor<'lua> = LuaUserDataRef<'lua, Color3>;
+        type ArgsColors<'lua> = (LuaUserDataRef<'lua, Color3>, LuaUserDataRef<'lua, Color3>);
+        type ArgsKeypoints<'lua> = Vec<LuaUserDataRef<'lua, ColorSequenceKeypoint>>;
+
+        let color_sequence_new = |lua, args: LuaMultiValue| {
+            if let Ok(color) = ArgsColor::from_lua_multi(args.clone(), lua) {
+                Ok(ColorSequence {
+                    keypoints: vec![
+                        ColorSequenceKeypoint {
+                            time: 0.0,
+                            color: *color,
+                        },
+                        ColorSequenceKeypoint {
+                            time: 1.0,
+                            color: *color,
+                        },
+                    ],
+                })
+            } else if let Ok((c0, c1)) = ArgsColors::from_lua_multi(args.clone(), lua) {
+                Ok(ColorSequence {
+                    keypoints: vec![
+                        ColorSequenceKeypoint {
+                            time: 0.0,
+                            color: *c0,
+                        },
+                        ColorSequenceKeypoint {
+                            time: 1.0,
+                            color: *c1,
+                        },
+                    ],
+                })
+            } else if let Ok(keypoints) = ArgsKeypoints::from_lua_multi(args, lua) {
+                Ok(ColorSequence {
+                    keypoints: keypoints.iter().map(|k| **k).collect(),
+                })
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", color_sequence_new)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for ColorSequence {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Keypoints", |_, this| Ok(this.keypoints.clone()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl fmt::Display for ColorSequence {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        for (index, keypoint) in self.keypoints.iter().enumerate() {
+            if index < self.keypoints.len() - 1 {
+                write!(f, "{keypoint}, ")?;
+            } else {
+                write!(f, "{keypoint}")?;
+            }
+        }
+        Ok(())
+    }
+}
+
+impl From<DomColorSequence> for ColorSequence {
+    fn from(v: DomColorSequence) -> Self {
+        Self {
+            keypoints: v
+                .keypoints
+                .iter()
+                .copied()
+                .map(ColorSequenceKeypoint::from)
+                .collect(),
+        }
+    }
+}
+
+impl From<ColorSequence> for DomColorSequence {
+    fn from(v: ColorSequence) -> Self {
+        Self {
+            keypoints: v
+                .keypoints
+                .iter()
+                .copied()
+                .map(DomColorSequenceKeypoint::from)
+                .collect(),
+        }
+    }
+}

crates/lune-roblox/src/datatypes/types/color_sequence_keypoint.rs

@@ -3,12 +3,16 @@ use core::fmt;
 use mlua::prelude::*;
 use rbx_dom_weak::types::ColorSequenceKeypoint as DomColorSequenceKeypoint;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, Color3};
 
 /**
     An implementation of the [ColorSequenceKeypoint](https://create.roblox.com/docs/reference/engine/datatypes/ColorSequenceKeypoint) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the ColorSequenceKeypoint class as of March 2023.
+    This implements all documented properties, methods & constructors of the `ColorSequenceKeypoint` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct ColorSequenceKeypoint {
@@ -16,15 +20,20 @@ pub struct ColorSequenceKeypoint {
     pub(crate) color: Color3,
 }
 
-impl ColorSequenceKeypoint {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (time, color): (f32, Color3)| {
-                Ok(ColorSequenceKeypoint { time, color })
-            })?,
-        )?;
-        Ok(())
+impl LuaExportsTable<'_> for ColorSequenceKeypoint {
+    const EXPORT_NAME: &'static str = "ColorSequenceKeypoint";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let color_sequence_keypoint_new = |_, (time, color): (f32, LuaUserDataRef<Color3>)| {
+            Ok(ColorSequenceKeypoint {
+                time,
+                color: *color,
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", color_sequence_keypoint_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/content.rs

@@ -0,0 +1,120 @@
+use core::fmt;
+
+use mlua::prelude::*;
+use rbx_dom_weak::types::{Content as DomContent, ContentType};
+
+use lune_utils::TableBuilder;
+
+use crate::{exports::LuaExportsTable, instance::Instance};
+
+use super::{super::*, EnumItem};
+
+/**
+    An implementation of the [Content](https://create.roblox.com/docs/reference/engine/datatypes/Content) Roblox datatype.
+
+    This implements all documented properties, methods & constructors of the Content type as of April 2025.
+*/
+#[derive(Debug, Clone, PartialEq)]
+pub struct Content(ContentType);
+
+impl LuaExportsTable<'_> for Content {
+    const EXPORT_NAME: &'static str = "Content";
+
+    fn create_exports_table(lua: &'_ Lua) -> LuaResult<LuaTable<'_>> {
+        let from_uri = |_, uri: String| Ok(Self(ContentType::Uri(uri)));
+
+        let from_object = |_, obj: LuaUserDataRef<Instance>| {
+            let database = rbx_reflection_database::get();
+            let instance_descriptor = database
+                .classes
+                .get("Instance")
+                .expect("the reflection database should always have Instance in it");
+            let param_descriptor = database.classes.get(obj.get_class_name()).expect(
+                "you should not be able to construct an Instance that is not known to Lune",
+            );
+            if database.has_superclass(param_descriptor, instance_descriptor) {
+                Err(LuaError::runtime("the provided object is a descendant class of 'Instance', expected one that was only an 'Object'"))
+            } else {
+                Ok(Content(ContentType::Object(obj.dom_ref)))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_value("none", Content(ContentType::None))?
+            .with_function("fromUri", from_uri)?
+            .with_function("fromObject", from_object)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for Content {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("SourceType", |_, this| {
+            let variant_name = match &this.0 {
+                ContentType::None => "None",
+                ContentType::Uri(_) => "Uri",
+                ContentType::Object(_) => "Object",
+                other => {
+                    return Err(LuaError::runtime(format!(
+                        "cannot get SourceType: unknown ContentType variant '{other:?}'"
+                    )))
+                }
+            };
+            Ok(EnumItem::from_enum_name_and_name(
+                "ContentSourceType",
+                variant_name,
+            ))
+        });
+        fields.add_field_method_get("Uri", |_, this| {
+            if let ContentType::Uri(uri) = &this.0 {
+                Ok(Some(uri.to_owned()))
+            } else {
+                Ok(None)
+            }
+        });
+        fields.add_field_method_get("Object", |_, this| {
+            if let ContentType::Object(referent) = &this.0 {
+                Ok(Instance::new_opt(*referent))
+            } else {
+                Ok(None)
+            }
+        });
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl fmt::Display for Content {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        // Regardless of the actual content of the Content, Roblox just emits
+        // `Content` when casting it to a string. We do not do that.
+        write!(f, "Content(")?;
+        match &self.0 {
+            ContentType::None => write!(f, "None")?,
+            ContentType::Uri(uri) => write!(f, "Uri={uri}")?,
+            ContentType::Object(_) => write!(f, "Object")?,
+            other => write!(f, "UnknownType({other:?})")?,
+        }
+        write!(f, ")")
+    }
+}
+
+impl From<DomContent> for Content {
+    fn from(value: DomContent) -> Self {
+        Self(value.value().clone())
+    }
+}
+
+impl From<Content> for DomContent {
+    fn from(value: Content) -> Self {
+        match value.0 {
+            ContentType::None => Self::none(),
+            ContentType::Uri(uri) => Self::from_uri(uri),
+            ContentType::Object(referent) => Self::from_referent(referent),
+            other => unimplemented!("unknown variant of ContentType: {other:?}"),
+        }
+    }
+}

crates/lune-roblox/src/datatypes/types/enum_item.rs

@@ -1,14 +1,14 @@
 use core::fmt;
 
 use mlua::prelude::*;
-use rbx_dom_weak::types::Enum as DomEnum;
+use rbx_dom_weak::types::EnumItem as DomEnumItem;
 
 use super::{super::*, Enum};
 
 /**
     An implementation of the [EnumItem](https://create.roblox.com/docs/reference/engine/datatypes/EnumItem) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the EnumItem class as of March 2023.
+    This implements all documented properties, methods & constructors of the `EnumItem` class as of March 2023.
 */
 #[derive(Debug, Clone)]
 pub struct EnumItem {
@@ -74,6 +74,20 @@ impl LuaUserData for EnumItem {
     }
 }
 
+impl<'lua> FromLua<'lua> for EnumItem {
+    fn from_lua(value: LuaValue<'lua>, _: &'lua Lua) -> LuaResult<Self> {
+        if let LuaValue::UserData(ud) = value {
+            Ok(ud.borrow::<EnumItem>()?.to_owned())
+        } else {
+            Err(LuaError::FromLuaConversionError {
+                from: value.type_name(),
+                to: "EnumItem",
+                message: None,
+            })
+        }
+    }
+}
+
 impl fmt::Display for EnumItem {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "{}.{}", self.parent, self.name)
@@ -86,8 +100,18 @@ impl PartialEq for EnumItem {
     }
 }
 
-impl From<EnumItem> for DomEnum {
+impl From<EnumItem> for DomEnumItem {
     fn from(v: EnumItem) -> Self {
-        DomEnum::from_u32(v.value)
+        DomEnumItem {
+            ty: v.parent.desc.name.to_string(),
+            value: v.value,
+        }
+    }
+}
+
+impl From<DomEnumItem> for EnumItem {
+    fn from(value: DomEnumItem) -> Self {
+        EnumItem::from_enum_name_and_value(value.ty, value.value)
+            .expect("cannot convert rbx_type::EnumItem with unknown type into EnumItem")
     }
 }

crates/lune-roblox/src/datatypes/types/enums.rs

@@ -24,8 +24,7 @@ impl LuaUserData for Enums {
             |_, _, name: String| match Enum::from_name(&name) {
                 Some(e) => Ok(e),
                 None => Err(LuaError::RuntimeError(format!(
-                    "The enum '{}' does not exist",
-                    name
+                    "The enum '{name}' does not exist",
                 ))),
             },
         );

crates/lune-roblox/src/datatypes/types/faces.rs

@@ -1,8 +1,14 @@
+#![allow(clippy::struct_excessive_bools)]
+
 use core::fmt;
 
 use mlua::prelude::*;
 use rbx_dom_weak::types::Faces as DomFaces;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, EnumItem};
 
 /**
@@ -20,59 +26,63 @@ pub struct Faces {
     pub(crate) front: bool,
 }
 
-impl Faces {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, args: LuaMultiValue| {
-                let mut right = false;
-                let mut top = false;
-                let mut back = false;
-                let mut left = false;
-                let mut bottom = false;
-                let mut front = false;
-                let mut check = |e: &EnumItem| {
-                    if e.parent.desc.name == "NormalId" {
-                        match &e.name {
-                            name if name == "Right" => right = true,
-                            name if name == "Top" => top = true,
-                            name if name == "Back" => back = true,
-                            name if name == "Left" => left = true,
-                            name if name == "Bottom" => bottom = true,
-                            name if name == "Front" => front = true,
-                            _ => {}
-                        }
-                    }
-                };
-                for (index, arg) in args.into_iter().enumerate() {
-                    if let LuaValue::UserData(u) = arg {
-                        if let Ok(e) = u.borrow::<EnumItem>() {
-                            check(&e);
-                        } else {
-                            return Err(LuaError::RuntimeError(format!(
-                                "Expected argument #{} to be an EnumItem, got userdata",
-                                index
-                            )));
-                        }
-                    } else {
-                        return Err(LuaError::RuntimeError(format!(
-                            "Expected argument #{} to be an EnumItem, got {}",
-                            index,
-                            arg.type_name()
-                        )));
+impl LuaExportsTable<'_> for Faces {
+    const EXPORT_NAME: &'static str = "Faces";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let faces_new = |_, args: LuaMultiValue| {
+            let mut right = false;
+            let mut top = false;
+            let mut back = false;
+            let mut left = false;
+            let mut bottom = false;
+            let mut front = false;
+
+            let mut check = |e: &EnumItem| {
+                if e.parent.desc.name == "NormalId" {
+                    match &e.name {
+                        name if name == "Right" => right = true,
+                        name if name == "Top" => top = true,
+                        name if name == "Back" => back = true,
+                        name if name == "Left" => left = true,
+                        name if name == "Bottom" => bottom = true,
+                        name if name == "Front" => front = true,
+                        _ => {}
                     }
                 }
-                Ok(Faces {
-                    right,
-                    top,
-                    back,
-                    left,
-                    bottom,
-                    front,
-                })
-            })?,
-        )?;
-        Ok(())
+            };
+
+            for (index, arg) in args.into_iter().enumerate() {
+                if let LuaValue::UserData(u) = arg {
+                    if let Ok(e) = u.borrow::<EnumItem>() {
+                        check(&e);
+                    } else {
+                        return Err(LuaError::RuntimeError(format!(
+                            "Expected argument #{index} to be an EnumItem, got userdata",
+                        )));
+                    }
+                } else {
+                    return Err(LuaError::RuntimeError(format!(
+                        "Expected argument #{} to be an EnumItem, got {}",
+                        index,
+                        arg.type_name()
+                    )));
+                }
+            }
+
+            Ok(Faces {
+                right,
+                top,
+                back,
+                left,
+                bottom,
+                front,
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", faces_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/font.rs

@@ -6,6 +6,10 @@ use rbx_dom_weak::types::{
     Font as DomFont, FontStyle as DomFontStyle, FontWeight as DomFontWeight,
 };
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, EnumItem};
 
 /**
@@ -34,66 +38,65 @@ impl Font {
                 cached_id: None,
             })
     }
+}
 
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(
-                |_, (family, weight, style): (String, Option<FontWeight>, Option<FontStyle>)| {
-                    Ok(Font {
-                        family,
-                        weight: weight.unwrap_or_default(),
-                        style: style.unwrap_or_default(),
-                        cached_id: None,
-                    })
-                },
-            )?,
-        )?;
-        datatype_table.set(
-            "fromEnum",
-            lua.create_function(|_, value: EnumItem| {
-                if value.parent.desc.name == "Font" {
-                    match Font::from_enum_item(&value) {
-                        Some(props) => Ok(props),
-                        None => Err(LuaError::RuntimeError(format!(
-                            "Found unknown Font '{}'",
-                            value.name
-                        ))),
-                    }
-                } else {
-                    Err(LuaError::RuntimeError(format!(
-                        "Expected argument #1 to be a Font, got {}",
-                        value.parent.desc.name
-                    )))
+impl LuaExportsTable<'_> for Font {
+    const EXPORT_NAME: &'static str = "Font";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let font_from_enum = |_, value: LuaUserDataRef<EnumItem>| {
+            if value.parent.desc.name == "Font" {
+                match Font::from_enum_item(&value) {
+                    Some(props) => Ok(props),
+                    None => Err(LuaError::RuntimeError(format!(
+                        "Found unknown Font '{}'",
+                        value.name
+                    ))),
                 }
-            })?,
-        )?;
-        datatype_table.set(
-            "fromName",
-            lua.create_function(
-                |_, (file, weight, style): (String, Option<FontWeight>, Option<FontStyle>)| {
-                    Ok(Font {
-                        family: format!("rbxasset://fonts/families/{}.json", file),
-                        weight: weight.unwrap_or_default(),
-                        style: style.unwrap_or_default(),
-                        cached_id: None,
-                    })
-                },
-            )?,
-        )?;
-        datatype_table.set(
-            "fromId",
-            lua.create_function(
-                |_, (id, weight, style): (i32, Option<FontWeight>, Option<FontStyle>)| {
-                    Ok(Font {
-                        family: format!("rbxassetid://{}", id),
-                        weight: weight.unwrap_or_default(),
-                        style: style.unwrap_or_default(),
-                        cached_id: None,
-                    })
-                },
-            )?,
-        )
+            } else {
+                Err(LuaError::RuntimeError(format!(
+                    "Expected argument #1 to be a Font, got {}",
+                    value.parent.desc.name
+                )))
+            }
+        };
+
+        let font_from_name =
+            |_, (file, weight, style): (String, Option<FontWeight>, Option<FontStyle>)| {
+                Ok(Font {
+                    family: format!("rbxasset://fonts/families/{file}.json"),
+                    weight: weight.unwrap_or_default(),
+                    style: style.unwrap_or_default(),
+                    cached_id: None,
+                })
+            };
+
+        let font_from_id =
+            |_, (id, weight, style): (i32, Option<FontWeight>, Option<FontStyle>)| {
+                Ok(Font {
+                    family: format!("rbxassetid://{id}"),
+                    weight: weight.unwrap_or_default(),
+                    style: style.unwrap_or_default(),
+                    cached_id: None,
+                })
+            };
+
+        let font_new =
+            |_, (family, weight, style): (String, Option<FontWeight>, Option<FontStyle>)| {
+                Ok(Font {
+                    family,
+                    weight: weight.unwrap_or_default(),
+                    style: style.unwrap_or_default(),
+                    cached_id: None,
+                })
+            };
+
+        TableBuilder::new(lua)?
+            .with_function("fromEnum", font_from_enum)?
+            .with_function("fromName", font_from_name)?
+            .with_function("fromId", font_from_id)?
+            .with_function("new", font_new)?
+            .build_readonly()
     }
 }
 
@@ -205,7 +208,7 @@ pub(crate) enum FontWeight {
 }
 
 impl FontWeight {
-    pub(crate) fn as_u16(&self) -> u16 {
+    pub(crate) fn as_u16(self) -> u16 {
         match self {
             Self::Thin => 100,
             Self::ExtraLight => 200,
@@ -287,12 +290,11 @@ impl<'lua> FromLua<'lua> for FontWeight {
             if value.parent.desc.name == "FontWeight" {
                 if let Ok(value) = FontWeight::from_str(&value.name) {
                     return Ok(value);
-                } else {
-                    message = Some(format!(
-                        "Found unknown Enum.FontWeight value '{}'",
-                        value.name
-                    ));
                 }
+                message = Some(format!(
+                    "Found unknown Enum.FontWeight value '{}'",
+                    value.name
+                ));
             } else {
                 message = Some(format!(
                     "Expected Enum.FontWeight, got Enum.{}",
@@ -308,14 +310,14 @@ impl<'lua> FromLua<'lua> for FontWeight {
     }
 }
 
-impl<'lua> ToLua<'lua> for FontWeight {
-    fn to_lua(self, lua: &'lua Lua) -> LuaResult<LuaValue<'lua>> {
+impl<'lua> IntoLua<'lua> for FontWeight {
+    fn into_lua(self, lua: &'lua Lua) -> LuaResult<LuaValue<'lua>> {
         match EnumItem::from_enum_name_and_name("FontWeight", self.to_string()) {
             Some(enum_item) => Ok(LuaValue::UserData(lua.create_userdata(enum_item)?)),
             None => Err(LuaError::ToLuaConversionError {
                 from: "FontWeight",
                 to: "EnumItem",
-                message: Some(format!("Found unknown Enum.FontWeight value '{}'", self)),
+                message: Some(format!("Found unknown Enum.FontWeight value '{self}'")),
             }),
         }
     }
@@ -328,7 +330,7 @@ pub(crate) enum FontStyle {
 }
 
 impl FontStyle {
-    pub(crate) fn as_u8(&self) -> u8 {
+    pub(crate) fn as_u8(self) -> u8 {
         match self {
             Self::Normal => 0,
             Self::Italic => 1,
@@ -382,12 +384,11 @@ impl<'lua> FromLua<'lua> for FontStyle {
             if value.parent.desc.name == "FontStyle" {
                 if let Ok(value) = FontStyle::from_str(&value.name) {
                     return Ok(value);
-                } else {
-                    message = Some(format!(
-                        "Found unknown Enum.FontStyle value '{}'",
-                        value.name
-                    ));
                 }
+                message = Some(format!(
+                    "Found unknown Enum.FontStyle value '{}'",
+                    value.name
+                ));
             } else {
                 message = Some(format!(
                     "Expected Enum.FontStyle, got Enum.{}",
@@ -403,14 +404,14 @@ impl<'lua> FromLua<'lua> for FontStyle {
     }
 }
 
-impl<'lua> ToLua<'lua> for FontStyle {
-    fn to_lua(self, lua: &'lua Lua) -> LuaResult<LuaValue<'lua>> {
+impl<'lua> IntoLua<'lua> for FontStyle {
+    fn into_lua(self, lua: &'lua Lua) -> LuaResult<LuaValue<'lua>> {
         match EnumItem::from_enum_name_and_name("FontStyle", self.to_string()) {
             Some(enum_item) => Ok(LuaValue::UserData(lua.create_userdata(enum_item)?)),
             None => Err(LuaError::ToLuaConversionError {
                 from: "FontStyle",
                 to: "EnumItem",
-                message: Some(format!("Found unknown Enum.FontStyle value '{}'", self)),
+                message: Some(format!("Found unknown Enum.FontStyle value '{self}'")),
             }),
         }
     }

crates/lune-roblox/src/datatypes/types/mod.rs

@@ -4,6 +4,7 @@ mod cframe;
 mod color3;
 mod color_sequence;
 mod color_sequence_keypoint;
+mod content;
 mod r#enum;
 mod r#enum_item;
 mod r#enums;
@@ -30,6 +31,7 @@ pub use cframe::CFrame;
 pub use color3::Color3;
 pub use color_sequence::ColorSequence;
 pub use color_sequence_keypoint::ColorSequenceKeypoint;
+pub use content::Content;
 pub use faces::Faces;
 pub use font::Font;
 pub use number_range::NumberRange;

crates/lune-roblox/src/datatypes/types/number_range.rs

@@ -3,12 +3,16 @@ use core::fmt;
 use mlua::prelude::*;
 use rbx_dom_weak::types::NumberRange as DomNumberRange;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
     An implementation of the [NumberRange](https://create.roblox.com/docs/reference/engine/datatypes/NumberRange) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the NumberRange class as of March 2023.
+    This implements all documented properties, methods & constructors of the `NumberRange` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct NumberRange {
@@ -16,20 +20,23 @@ pub struct NumberRange {
     pub(crate) max: f32,
 }
 
-impl NumberRange {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (min, max): (f32, Option<f32>)| {
-                Ok(match max {
-                    Some(max) => NumberRange {
-                        min: min.min(max),
-                        max: min.max(max),
-                    },
-                    None => NumberRange { min, max: min },
-                })
-            })?,
-        )
+impl LuaExportsTable<'_> for NumberRange {
+    const EXPORT_NAME: &'static str = "NumberRange";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let number_range_new = |_, (min, max): (f32, Option<f32>)| {
+            Ok(match max {
+                Some(max) => NumberRange {
+                    min: min.min(max),
+                    max: min.max(max),
+                },
+                None => NumberRange { min, max: min },
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", number_range_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/number_sequence.rs

@@ -0,0 +1,129 @@
+use core::fmt;
+
+use mlua::prelude::*;
+use rbx_dom_weak::types::{
+    NumberSequence as DomNumberSequence, NumberSequenceKeypoint as DomNumberSequenceKeypoint,
+};
+
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
+use super::{super::*, NumberSequenceKeypoint};
+
+/**
+    An implementation of the [NumberSequence](https://create.roblox.com/docs/reference/engine/datatypes/NumberSequence) Roblox datatype.
+
+    This implements all documented properties, methods & constructors of the `NumberSequence` class as of March 2023.
+*/
+#[derive(Debug, Clone, PartialEq)]
+pub struct NumberSequence {
+    pub(crate) keypoints: Vec<NumberSequenceKeypoint>,
+}
+
+impl LuaExportsTable<'_> for NumberSequence {
+    const EXPORT_NAME: &'static str = "NumberSequence";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        type ArgsColor = f32;
+        type ArgsColors = (f32, f32);
+        type ArgsKeypoints<'lua> = Vec<LuaUserDataRef<'lua, NumberSequenceKeypoint>>;
+
+        let number_sequence_new = |lua, args: LuaMultiValue| {
+            if let Ok(value) = ArgsColor::from_lua_multi(args.clone(), lua) {
+                Ok(NumberSequence {
+                    keypoints: vec![
+                        NumberSequenceKeypoint {
+                            time: 0.0,
+                            value,
+                            envelope: 0.0,
+                        },
+                        NumberSequenceKeypoint {
+                            time: 1.0,
+                            value,
+                            envelope: 0.0,
+                        },
+                    ],
+                })
+            } else if let Ok((v0, v1)) = ArgsColors::from_lua_multi(args.clone(), lua) {
+                Ok(NumberSequence {
+                    keypoints: vec![
+                        NumberSequenceKeypoint {
+                            time: 0.0,
+                            value: v0,
+                            envelope: 0.0,
+                        },
+                        NumberSequenceKeypoint {
+                            time: 1.0,
+                            value: v1,
+                            envelope: 0.0,
+                        },
+                    ],
+                })
+            } else if let Ok(keypoints) = ArgsKeypoints::from_lua_multi(args, lua) {
+                Ok(NumberSequence {
+                    keypoints: keypoints.iter().map(|k| **k).collect(),
+                })
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", number_sequence_new)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for NumberSequence {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Keypoints", |_, this| Ok(this.keypoints.clone()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl fmt::Display for NumberSequence {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        for (index, keypoint) in self.keypoints.iter().enumerate() {
+            if index < self.keypoints.len() - 1 {
+                write!(f, "{keypoint}, ")?;
+            } else {
+                write!(f, "{keypoint}")?;
+            }
+        }
+        Ok(())
+    }
+}
+
+impl From<DomNumberSequence> for NumberSequence {
+    fn from(v: DomNumberSequence) -> Self {
+        Self {
+            keypoints: v
+                .keypoints
+                .iter()
+                .copied()
+                .map(NumberSequenceKeypoint::from)
+                .collect(),
+        }
+    }
+}
+
+impl From<NumberSequence> for DomNumberSequence {
+    fn from(v: NumberSequence) -> Self {
+        Self {
+            keypoints: v
+                .keypoints
+                .iter()
+                .copied()
+                .map(DomNumberSequenceKeypoint::from)
+                .collect(),
+        }
+    }
+}

crates/lune-roblox/src/datatypes/types/number_sequence_keypoint.rs

@@ -3,12 +3,16 @@ use core::fmt;
 use mlua::prelude::*;
 use rbx_dom_weak::types::NumberSequenceKeypoint as DomNumberSequenceKeypoint;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
     An implementation of the [NumberSequenceKeypoint](https://create.roblox.com/docs/reference/engine/datatypes/NumberSequenceKeypoint) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the NumberSequenceKeypoint class as of March 2023.
+    This implements all documented properties, methods & constructors of the `NumberSequenceKeypoint` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct NumberSequenceKeypoint {
@@ -17,19 +21,21 @@ pub struct NumberSequenceKeypoint {
     pub(crate) envelope: f32,
 }
 
-impl NumberSequenceKeypoint {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (time, value, envelope): (f32, f32, Option<f32>)| {
-                Ok(NumberSequenceKeypoint {
-                    time,
-                    value,
-                    envelope: envelope.unwrap_or_default(),
-                })
-            })?,
-        )?;
-        Ok(())
+impl LuaExportsTable<'_> for NumberSequenceKeypoint {
+    const EXPORT_NAME: &'static str = "NumberSequenceKeypoint";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let number_sequence_keypoint_new = |_, (time, value, envelope): (f32, f32, Option<f32>)| {
+            Ok(NumberSequenceKeypoint {
+                time,
+                value,
+                envelope: envelope.unwrap_or_default(),
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", number_sequence_keypoint_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/physical_properties.rs

@@ -3,12 +3,16 @@ use core::fmt;
 use mlua::prelude::*;
 use rbx_dom_weak::types::CustomPhysicalProperties as DomCustomPhysicalProperties;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, EnumItem};
 
 /**
     An implementation of the [PhysicalProperties](https://create.roblox.com/docs/reference/engine/datatypes/PhysicalProperties) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the PhysicalProperties class as of March 2023.
+    This implements all documented properties, methods & constructors of the `PhysicalProperties` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct PhysicalProperties {
@@ -32,51 +36,52 @@ impl PhysicalProperties {
                 elasticity_weight: props.5,
             })
     }
+}
 
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        type ArgsMaterial = EnumItem;
+impl LuaExportsTable<'_> for PhysicalProperties {
+    const EXPORT_NAME: &'static str = "PhysicalProperties";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        type ArgsMaterial<'lua> = LuaUserDataRef<'lua, EnumItem>;
         type ArgsNumbers = (f32, f32, f32, Option<f32>, Option<f32>);
-        datatype_table.set(
-            "new",
-            lua.create_function(|lua, args: LuaMultiValue| {
-                if let Ok(value) = ArgsMaterial::from_lua_multi(args.clone(), lua) {
-                    if value.parent.desc.name == "Material" {
-                        match PhysicalProperties::from_material(&value) {
-                            Some(props) => Ok(props),
-                            None => Err(LuaError::RuntimeError(format!(
-                                "Found unknown Material '{}'",
-                                value.name
-                            ))),
-                        }
-                    } else {
-                        Err(LuaError::RuntimeError(format!(
-                            "Expected argument #1 to be a Material, got {}",
-                            value.parent.desc.name
-                        )))
+
+        let physical_properties_new = |lua, args: LuaMultiValue| {
+            if let Ok(value) = ArgsMaterial::from_lua_multi(args.clone(), lua) {
+                if value.parent.desc.name == "Material" {
+                    match PhysicalProperties::from_material(&value) {
+                        Some(props) => Ok(props),
+                        None => Err(LuaError::RuntimeError(format!(
+                            "Found unknown Material '{}'",
+                            value.name
+                        ))),
                     }
-                } else if let Ok((
+                } else {
+                    Err(LuaError::RuntimeError(format!(
+                        "Expected argument #1 to be a Material, got {}",
+                        value.parent.desc.name
+                    )))
+                }
+            } else if let Ok((density, friction, elasticity, friction_weight, elasticity_weight)) =
+                ArgsNumbers::from_lua_multi(args, lua)
+            {
+                Ok(PhysicalProperties {
                     density,
                     friction,
+                    friction_weight: friction_weight.unwrap_or(1.0),
                     elasticity,
-                    friction_weight,
-                    elasticity_weight,
-                )) = ArgsNumbers::from_lua_multi(args, lua)
-                {
-                    Ok(PhysicalProperties {
-                        density,
-                        friction,
-                        friction_weight: friction_weight.unwrap_or(1.0),
-                        elasticity,
-                        elasticity_weight: elasticity_weight.unwrap_or(1.0),
-                    })
-                } else {
-                    // FUTURE: Better error message here using given arg types
-                    Err(LuaError::RuntimeError(
-                        "Invalid arguments to constructor".to_string(),
-                    ))
-                }
-            })?,
-        )
+                    elasticity_weight: elasticity_weight.unwrap_or(1.0),
+                })
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", physical_properties_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/ray.rs

@@ -4,6 +4,10 @@ use glam::Vec3;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Ray as DomRay;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, Vector3};
 
 /**
@@ -26,17 +30,23 @@ impl Ray {
         let dot_product = lhs.dot(norm).max(0.0);
         self.origin + norm * dot_product
     }
+}
 
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (origin, direction): (Vector3, Vector3)| {
+impl LuaExportsTable<'_> for Ray {
+    const EXPORT_NAME: &'static str = "Ray";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let ray_new =
+            |_, (origin, direction): (LuaUserDataRef<Vector3>, LuaUserDataRef<Vector3>)| {
                 Ok(Ray {
                     origin: origin.0,
                     direction: direction.0,
                 })
-            })?,
-        )
+            };
+
+        TableBuilder::new(lua)?
+            .with_function("new", ray_new)?
+            .build_readonly()
     }
 }
 
@@ -54,10 +64,10 @@ impl LuaUserData for Ray {
 
     fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
         // Methods
-        methods.add_method("ClosestPoint", |_, this, to: Vector3| {
+        methods.add_method("ClosestPoint", |_, this, to: LuaUserDataRef<Vector3>| {
             Ok(Vector3(this.closest_point(to.0)))
         });
-        methods.add_method("Distance", |_, this, to: Vector3| {
+        methods.add_method("Distance", |_, this, to: LuaUserDataRef<Vector3>| {
             let closest = this.closest_point(to.0);
             Ok((closest - to.0).length())
         });

crates/lune-roblox/src/datatypes/types/rect.rs

@@ -5,6 +5,10 @@ use glam::Vec2;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Rect as DomRect;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, Vector2};
 
 /**
@@ -28,30 +32,37 @@ impl Rect {
     }
 }
 
-impl Rect {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        type ArgsVector2s = (Option<Vector2>, Option<Vector2>);
+impl LuaExportsTable<'_> for Rect {
+    const EXPORT_NAME: &'static str = "Rect";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        type ArgsVector2s<'lua> = (
+            Option<LuaUserDataRef<'lua, Vector2>>,
+            Option<LuaUserDataRef<'lua, Vector2>>,
+        );
         type ArgsNums = (Option<f32>, Option<f32>, Option<f32>, Option<f32>);
-        datatype_table.set(
-            "new",
-            lua.create_function(|lua, args: LuaMultiValue| {
-                if let Ok((min, max)) = ArgsVector2s::from_lua_multi(args.clone(), lua) {
-                    Ok(Rect::new(
-                        min.unwrap_or_default().0,
-                        max.unwrap_or_default().0,
-                    ))
-                } else if let Ok((x0, y0, x1, y1)) = ArgsNums::from_lua_multi(args, lua) {
-                    let min = Vec2::new(x0.unwrap_or_default(), y0.unwrap_or_default());
-                    let max = Vec2::new(x1.unwrap_or_default(), y1.unwrap_or_default());
-                    Ok(Rect::new(min, max))
-                } else {
-                    // FUTURE: Better error message here using given arg types
-                    Err(LuaError::RuntimeError(
-                        "Invalid arguments to constructor".to_string(),
-                    ))
-                }
-            })?,
-        )
+
+        let rect_new = |lua, args: LuaMultiValue| {
+            if let Ok((min, max)) = ArgsVector2s::from_lua_multi(args.clone(), lua) {
+                Ok(Rect::new(
+                    min.map(|m| *m).unwrap_or_default().0,
+                    max.map(|m| *m).unwrap_or_default().0,
+                ))
+            } else if let Ok((x0, y0, x1, y1)) = ArgsNums::from_lua_multi(args, lua) {
+                let min = Vec2::new(x0.unwrap_or_default(), y0.unwrap_or_default());
+                let max = Vec2::new(x1.unwrap_or_default(), y1.unwrap_or_default());
+                Ok(Rect::new(min, max))
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", rect_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/region3.rs

@@ -4,6 +4,10 @@ use glam::{Mat4, Vec3};
 use mlua::prelude::*;
 use rbx_dom_weak::types::Region3 as DomRegion3;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, CFrame, Vector3};
 
 /**
@@ -18,17 +22,20 @@ pub struct Region3 {
     pub(crate) max: Vec3,
 }
 
-impl Region3 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (min, max): (Vector3, Vector3)| {
-                Ok(Region3 {
-                    min: min.0,
-                    max: max.0,
-                })
-            })?,
-        )
+impl LuaExportsTable<'_> for Region3 {
+    const EXPORT_NAME: &'static str = "Region3";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let region3_new = |_, (min, max): (LuaUserDataRef<Vector3>, LuaUserDataRef<Vector3>)| {
+            Ok(Region3 {
+                min: min.0,
+                max: max.0,
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", region3_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/region3int16.rs

@@ -4,6 +4,10 @@ use glam::IVec3;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Region3int16 as DomRegion3int16;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::{super::*, Vector3int16};
 
 /**
@@ -18,17 +22,21 @@ pub struct Region3int16 {
     pub(crate) max: IVec3,
 }
 
-impl Region3int16 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (min, max): (Vector3int16, Vector3int16)| {
+impl LuaExportsTable<'_> for Region3int16 {
+    const EXPORT_NAME: &'static str = "Region3int16";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let region3int16_new =
+            |_, (min, max): (LuaUserDataRef<Vector3int16>, LuaUserDataRef<Vector3int16>)| {
                 Ok(Region3int16 {
                     min: min.0,
                     max: max.0,
                 })
-            })?,
-        )
+            };
+
+        TableBuilder::new(lua)?
+            .with_function("new", region3int16_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/udim.rs

@@ -4,12 +4,16 @@ use std::ops;
 use mlua::prelude::*;
 use rbx_dom_weak::types::UDim as DomUDim;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
     An implementation of the [UDim](https://create.roblox.com/docs/reference/engine/datatypes/UDim) Roblox datatype.
 
-    This implements all documented properties, methods & constructors of the UDim class as of March 2023.
+    This implements all documented properties, methods & constructors of the `UDim` class as of March 2023.
 */
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct UDim {
@@ -21,17 +25,22 @@ impl UDim {
     pub(super) fn new(scale: f32, offset: i32) -> Self {
         Self { scale, offset }
     }
+}
 
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (scale, offset): (Option<f32>, Option<i32>)| {
-                Ok(UDim {
-                    scale: scale.unwrap_or_default(),
-                    offset: offset.unwrap_or_default(),
-                })
-            })?,
-        )
+impl LuaExportsTable<'_> for UDim {
+    const EXPORT_NAME: &'static str = "UDim";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let udim_new = |_, (scale, offset): (Option<f32>, Option<i32>)| {
+            Ok(UDim {
+                scale: scale.unwrap_or_default(),
+                offset: offset.unwrap_or_default(),
+            })
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", udim_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/udim2.rs

@@ -0,0 +1,172 @@
+#![allow(clippy::items_after_statements)]
+
+use core::fmt;
+use std::ops;
+
+use glam::Vec2;
+use mlua::prelude::*;
+use rbx_dom_weak::types::UDim2 as DomUDim2;
+
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
+use super::{super::*, UDim};
+
+/**
+    An implementation of the [UDim2](https://create.roblox.com/docs/reference/engine/datatypes/UDim2) Roblox datatype.
+
+    This implements all documented properties, methods & constructors of the `UDim2` class as of March 2023.
+*/
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct UDim2 {
+    pub(crate) x: UDim,
+    pub(crate) y: UDim,
+}
+
+impl LuaExportsTable<'_> for UDim2 {
+    const EXPORT_NAME: &'static str = "UDim2";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let udim2_from_offset = |_, (x, y): (Option<i32>, Option<i32>)| {
+            Ok(UDim2 {
+                x: UDim::new(0f32, x.unwrap_or_default()),
+                y: UDim::new(0f32, y.unwrap_or_default()),
+            })
+        };
+
+        let udim2_from_scale = |_, (x, y): (Option<f32>, Option<f32>)| {
+            Ok(UDim2 {
+                x: UDim::new(x.unwrap_or_default(), 0),
+                y: UDim::new(y.unwrap_or_default(), 0),
+            })
+        };
+
+        type ArgsUDims<'lua> = (
+            Option<LuaUserDataRef<'lua, UDim>>,
+            Option<LuaUserDataRef<'lua, UDim>>,
+        );
+        type ArgsNums = (Option<f32>, Option<i32>, Option<f32>, Option<i32>);
+        let udim2_new = |lua, args: LuaMultiValue| {
+            if let Ok((x, y)) = ArgsUDims::from_lua_multi(args.clone(), lua) {
+                Ok(UDim2 {
+                    x: x.map(|x| *x).unwrap_or_default(),
+                    y: y.map(|y| *y).unwrap_or_default(),
+                })
+            } else if let Ok((sx, ox, sy, oy)) = ArgsNums::from_lua_multi(args, lua) {
+                Ok(UDim2 {
+                    x: UDim::new(sx.unwrap_or_default(), ox.unwrap_or_default()),
+                    y: UDim::new(sy.unwrap_or_default(), oy.unwrap_or_default()),
+                })
+            } else {
+                // FUTURE: Better error message here using given arg types
+                Err(LuaError::RuntimeError(
+                    "Invalid arguments to constructor".to_string(),
+                ))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("fromOffset", udim2_from_offset)?
+            .with_function("fromScale", udim2_from_scale)?
+            .with_function("new", udim2_new)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for UDim2 {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("X", |_, this| Ok(this.x));
+        fields.add_field_method_get("Y", |_, this| Ok(this.y));
+        fields.add_field_method_get("Width", |_, this| Ok(this.x));
+        fields.add_field_method_get("Height", |_, this| Ok(this.y));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        // Methods
+        methods.add_method(
+            "Lerp",
+            |_, this, (goal, alpha): (LuaUserDataRef<UDim2>, f32)| {
+                let this_x = Vec2::new(this.x.scale, this.x.offset as f32);
+                let goal_x = Vec2::new(goal.x.scale, goal.x.offset as f32);
+
+                let this_y = Vec2::new(this.y.scale, this.y.offset as f32);
+                let goal_y = Vec2::new(goal.y.scale, goal.y.offset as f32);
+
+                let x = this_x.lerp(goal_x, alpha);
+                let y = this_y.lerp(goal_y, alpha);
+
+                Ok(UDim2 {
+                    x: UDim {
+                        scale: x.x,
+                        offset: x.y.clamp(i32::MIN as f32, i32::MAX as f32).round() as i32,
+                    },
+                    y: UDim {
+                        scale: y.x,
+                        offset: y.y.clamp(i32::MIN as f32, i32::MAX as f32).round() as i32,
+                    },
+                })
+            },
+        );
+        // Metamethods
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+        methods.add_meta_method(LuaMetaMethod::Unm, userdata_impl_unm);
+        methods.add_meta_method(LuaMetaMethod::Add, userdata_impl_add);
+        methods.add_meta_method(LuaMetaMethod::Sub, userdata_impl_sub);
+    }
+}
+
+impl fmt::Display for UDim2 {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}, {}", self.x, self.y)
+    }
+}
+
+impl ops::Neg for UDim2 {
+    type Output = Self;
+    fn neg(self) -> Self::Output {
+        UDim2 {
+            x: -self.x,
+            y: -self.y,
+        }
+    }
+}
+
+impl ops::Add for UDim2 {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        UDim2 {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+
+impl ops::Sub for UDim2 {
+    type Output = Self;
+    fn sub(self, rhs: Self) -> Self::Output {
+        UDim2 {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
+impl From<DomUDim2> for UDim2 {
+    fn from(v: DomUDim2) -> Self {
+        UDim2 {
+            x: v.x.into(),
+            y: v.y.into(),
+        }
+    }
+}
+
+impl From<UDim2> for DomUDim2 {
+    fn from(v: UDim2) -> Self {
+        DomUDim2 {
+            x: v.x.into(),
+            y: v.y.into(),
+        }
+    }
+}

crates/lune-roblox/src/datatypes/types/vector2.rs

@@ -5,6 +5,10 @@ use glam::{Vec2, Vec3};
 use mlua::prelude::*;
 use rbx_dom_weak::types::Vector2 as DomVector2;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
@@ -17,23 +21,24 @@ use super::super::*;
 #[derive(Debug, Clone, Copy, PartialEq, Default)]
 pub struct Vector2(pub Vec2);
 
-impl Vector2 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        // Constants
-        datatype_table.set("xAxis", Vector2(Vec2::X))?;
-        datatype_table.set("yAxis", Vector2(Vec2::Y))?;
-        datatype_table.set("zero", Vector2(Vec2::ZERO))?;
-        datatype_table.set("one", Vector2(Vec2::ONE))?;
-        // Constructors
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (x, y): (Option<f32>, Option<f32>)| {
-                Ok(Vector2(Vec2 {
-                    x: x.unwrap_or_default(),
-                    y: y.unwrap_or_default(),
-                }))
-            })?,
-        )
+impl LuaExportsTable<'_> for Vector2 {
+    const EXPORT_NAME: &'static str = "Vector2";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let vector2_new = |_, (x, y): (Option<f32>, Option<f32>)| {
+            Ok(Vector2(Vec2 {
+                x: x.unwrap_or_default(),
+                y: y.unwrap_or_default(),
+            }))
+        };
+
+        TableBuilder::new(lua)?
+            .with_value("xAxis", Vector2(Vec2::X))?
+            .with_value("yAxis", Vector2(Vec2::Y))?
+            .with_value("zero", Vector2(Vec2::ZERO))?
+            .with_value("one", Vector2(Vec2::ONE))?
+            .with_function("new", vector2_new)?
+            .build_readonly()
     }
 }
 
@@ -47,21 +52,41 @@ impl LuaUserData for Vector2 {
 
     fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
         // Methods
-        methods.add_method("Cross", |_, this, rhs: Vector2| {
+        methods.add_method("Angle", |_, this, rhs: LuaUserDataRef<Vector2>| {
+            Ok(this.0.angle_between(rhs.0))
+        });
+        methods.add_method("Cross", |_, this, rhs: LuaUserDataRef<Vector2>| {
             let this_v3 = Vec3::new(this.0.x, this.0.y, 0f32);
             let rhs_v3 = Vec3::new(rhs.0.x, rhs.0.y, 0f32);
             Ok(this_v3.cross(rhs_v3).z)
         });
-        methods.add_method("Dot", |_, this, rhs: Vector2| Ok(this.0.dot(rhs.0)));
-        methods.add_method("Lerp", |_, this, (rhs, alpha): (Vector2, f32)| {
-            Ok(Vector2(this.0.lerp(rhs.0, alpha)))
+        methods.add_method("Dot", |_, this, rhs: LuaUserDataRef<Vector2>| {
+            Ok(this.0.dot(rhs.0))
         });
-        methods.add_method("Max", |_, this, rhs: Vector2| {
+        methods.add_method(
+            "FuzzyEq",
+            |_, this, (rhs, epsilon): (LuaUserDataRef<Vector2>, f32)| {
+                let eq_x = (rhs.0.x - this.0.x).abs() <= epsilon;
+                let eq_y = (rhs.0.y - this.0.y).abs() <= epsilon;
+                Ok(eq_x && eq_y)
+            },
+        );
+        methods.add_method(
+            "Lerp",
+            |_, this, (rhs, alpha): (LuaUserDataRef<Vector2>, f32)| {
+                Ok(Vector2(this.0.lerp(rhs.0, alpha)))
+            },
+        );
+        methods.add_method("Max", |_, this, rhs: LuaUserDataRef<Vector2>| {
             Ok(Vector2(this.0.max(rhs.0)))
         });
-        methods.add_method("Min", |_, this, rhs: Vector2| {
+        methods.add_method("Min", |_, this, rhs: LuaUserDataRef<Vector2>| {
             Ok(Vector2(this.0.min(rhs.0)))
         });
+        methods.add_method("Abs", |_, this, ()| Ok(Vector2(this.0.abs())));
+        methods.add_method("Ceil", |_, this, ()| Ok(Vector2(this.0.ceil())));
+        methods.add_method("Floor", |_, this, ()| Ok(Vector2(this.0.floor())));
+        methods.add_method("Sign", |_, this, ()| Ok(Vector2(this.0.signum())));
         // Metamethods
         methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
         methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
@@ -70,6 +95,7 @@ impl LuaUserData for Vector2 {
         methods.add_meta_method(LuaMetaMethod::Sub, userdata_impl_sub);
         methods.add_meta_method(LuaMetaMethod::Mul, userdata_impl_mul_f32);
         methods.add_meta_method(LuaMetaMethod::Div, userdata_impl_div_f32);
+        methods.add_meta_method(LuaMetaMethod::IDiv, userdata_impl_idiv_f32);
     }
 }
 
@@ -128,6 +154,20 @@ impl ops::Div<f32> for Vector2 {
     }
 }
 
+impl IDiv for Vector2 {
+    type Output = Vector2;
+    fn idiv(self, rhs: Self) -> Self::Output {
+        Self((self.0 / rhs.0).floor())
+    }
+}
+
+impl IDiv<f32> for Vector2 {
+    type Output = Vector2;
+    fn idiv(self, rhs: f32) -> Self::Output {
+        Self((self.0 / rhs).floor())
+    }
+}
+
 impl From<DomVector2> for Vector2 {
     fn from(v: DomVector2) -> Self {
         Vector2(Vec2 { x: v.x, y: v.y })

crates/lune-roblox/src/datatypes/types/vector2int16.rs

@@ -5,6 +5,10 @@ use glam::IVec2;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Vector2int16 as DomVector2int16;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
@@ -17,17 +21,20 @@ use super::super::*;
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Vector2int16(pub IVec2);
 
-impl Vector2int16 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (x, y): (Option<i16>, Option<i16>)| {
-                Ok(Vector2int16(IVec2 {
-                    x: x.unwrap_or_default() as i32,
-                    y: y.unwrap_or_default() as i32,
-                }))
-            })?,
-        )
+impl LuaExportsTable<'_> for Vector2int16 {
+    const EXPORT_NAME: &'static str = "Vector2int16";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let vector2int16_new = |_, (x, y): (Option<i16>, Option<i16>)| {
+            Ok(Vector2int16(IVec2 {
+                x: x.unwrap_or_default() as i32,
+                y: y.unwrap_or_default() as i32,
+            }))
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", vector2int16_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/types/vector3.rs

@@ -0,0 +1,239 @@
+use core::fmt;
+use std::ops;
+
+use glam::Vec3;
+use mlua::prelude::*;
+use rbx_dom_weak::types::Vector3 as DomVector3;
+
+use lune_utils::TableBuilder;
+
+use crate::{datatypes::util::round_float_decimal, exports::LuaExportsTable};
+
+use super::{super::*, EnumItem};
+
+/**
+    An implementation of the [Vector3](https://create.roblox.com/docs/reference/engine/datatypes/Vector3)
+    Roblox datatype, backed by [`glam::Vec3`].
+
+    This implements all documented properties, methods &
+    constructors of the Vector3 class as of March 2023.
+
+    Note that this does not use native Luau vectors to simplify implementation
+    and instead allow us to implement all abovementioned APIs accurately.
+*/
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub struct Vector3(pub Vec3);
+
+impl LuaExportsTable<'_> for Vector3 {
+    const EXPORT_NAME: &'static str = "Vector3";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let vector3_from_axis = |_, normal_id: LuaUserDataRef<EnumItem>| {
+            if normal_id.parent.desc.name == "Axis" {
+                Ok(match normal_id.name.as_str() {
+                    "X" => Vector3(Vec3::X),
+                    "Y" => Vector3(Vec3::Y),
+                    "Z" => Vector3(Vec3::Z),
+                    name => {
+                        return Err(LuaError::RuntimeError(format!(
+                            "Axis '{name}' is not known",
+                        )))
+                    }
+                })
+            } else {
+                Err(LuaError::RuntimeError(format!(
+                    "EnumItem must be a Axis, got {}",
+                    normal_id.parent.desc.name
+                )))
+            }
+        };
+
+        let vector3_from_normal_id = |_, normal_id: LuaUserDataRef<EnumItem>| {
+            if normal_id.parent.desc.name == "NormalId" {
+                Ok(match normal_id.name.as_str() {
+                    "Left" => Vector3(Vec3::X),
+                    "Top" => Vector3(Vec3::Y),
+                    "Front" => Vector3(-Vec3::Z),
+                    "Right" => Vector3(-Vec3::X),
+                    "Bottom" => Vector3(-Vec3::Y),
+                    "Back" => Vector3(Vec3::Z),
+                    name => {
+                        return Err(LuaError::RuntimeError(format!(
+                            "NormalId '{name}' is not known",
+                        )))
+                    }
+                })
+            } else {
+                Err(LuaError::RuntimeError(format!(
+                    "EnumItem must be a NormalId, got {}",
+                    normal_id.parent.desc.name
+                )))
+            }
+        };
+
+        let vector3_new = |_, (x, y, z): (Option<f32>, Option<f32>, Option<f32>)| {
+            Ok(Vector3(Vec3 {
+                x: x.unwrap_or_default(),
+                y: y.unwrap_or_default(),
+                z: z.unwrap_or_default(),
+            }))
+        };
+
+        TableBuilder::new(lua)?
+            .with_value("xAxis", Vector3(Vec3::X))?
+            .with_value("yAxis", Vector3(Vec3::Y))?
+            .with_value("zAxis", Vector3(Vec3::Z))?
+            .with_value("zero", Vector3(Vec3::ZERO))?
+            .with_value("one", Vector3(Vec3::ONE))?
+            .with_function("fromAxis", vector3_from_axis)?
+            .with_function("fromNormalId", vector3_from_normal_id)?
+            .with_function("new", vector3_new)?
+            .build_readonly()
+    }
+}
+
+impl LuaUserData for Vector3 {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Magnitude", |_, this| Ok(this.0.length()));
+        fields.add_field_method_get("Unit", |_, this| Ok(Vector3(this.0.normalize())));
+        fields.add_field_method_get("X", |_, this| Ok(this.0.x));
+        fields.add_field_method_get("Y", |_, this| Ok(this.0.y));
+        fields.add_field_method_get("Z", |_, this| Ok(this.0.z));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        // Methods
+        methods.add_method("Angle", |_, this, rhs: LuaUserDataRef<Vector3>| {
+            Ok(this.0.angle_between(rhs.0))
+        });
+        methods.add_method("Cross", |_, this, rhs: LuaUserDataRef<Vector3>| {
+            Ok(Vector3(this.0.cross(rhs.0)))
+        });
+        methods.add_method("Dot", |_, this, rhs: LuaUserDataRef<Vector3>| {
+            Ok(this.0.dot(rhs.0))
+        });
+        methods.add_method(
+            "FuzzyEq",
+            |_, this, (rhs, epsilon): (LuaUserDataRef<Vector3>, f32)| {
+                let eq_x = (rhs.0.x - this.0.x).abs() <= epsilon;
+                let eq_y = (rhs.0.y - this.0.y).abs() <= epsilon;
+                let eq_z = (rhs.0.z - this.0.z).abs() <= epsilon;
+                Ok(eq_x && eq_y && eq_z)
+            },
+        );
+        methods.add_method(
+            "Lerp",
+            |_, this, (rhs, alpha): (LuaUserDataRef<Vector3>, f32)| {
+                Ok(Vector3(this.0.lerp(rhs.0, alpha)))
+            },
+        );
+        methods.add_method("Max", |_, this, rhs: LuaUserDataRef<Vector3>| {
+            Ok(Vector3(this.0.max(rhs.0)))
+        });
+        methods.add_method("Min", |_, this, rhs: LuaUserDataRef<Vector3>| {
+            Ok(Vector3(this.0.min(rhs.0)))
+        });
+        methods.add_method("Abs", |_, this, ()| Ok(Vector3(this.0.abs())));
+        methods.add_method("Ceil", |_, this, ()| Ok(Vector3(this.0.ceil())));
+        methods.add_method("Floor", |_, this, ()| Ok(Vector3(this.0.floor())));
+        methods.add_method("Sign", |_, this, ()| Ok(Vector3(this.0.signum())));
+        // Metamethods
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+        methods.add_meta_method(LuaMetaMethod::Unm, userdata_impl_unm);
+        methods.add_meta_method(LuaMetaMethod::Add, userdata_impl_add);
+        methods.add_meta_method(LuaMetaMethod::Sub, userdata_impl_sub);
+        methods.add_meta_method(LuaMetaMethod::Mul, userdata_impl_mul_f32);
+        methods.add_meta_method(LuaMetaMethod::Div, userdata_impl_div_f32);
+        methods.add_meta_method(LuaMetaMethod::IDiv, userdata_impl_idiv_f32);
+    }
+}
+
+impl fmt::Display for Vector3 {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}, {}, {}", self.0.x, self.0.y, self.0.z)
+    }
+}
+
+impl ops::Neg for Vector3 {
+    type Output = Self;
+    fn neg(self) -> Self::Output {
+        Vector3(-self.0)
+    }
+}
+
+impl ops::Add for Vector3 {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        Vector3(self.0 + rhs.0)
+    }
+}
+
+impl ops::Sub for Vector3 {
+    type Output = Self;
+    fn sub(self, rhs: Self) -> Self::Output {
+        Vector3(self.0 - rhs.0)
+    }
+}
+
+impl ops::Mul for Vector3 {
+    type Output = Vector3;
+    fn mul(self, rhs: Self) -> Self::Output {
+        Self(self.0 * rhs.0)
+    }
+}
+
+impl ops::Mul<f32> for Vector3 {
+    type Output = Vector3;
+    fn mul(self, rhs: f32) -> Self::Output {
+        Self(self.0 * rhs)
+    }
+}
+
+impl ops::Div for Vector3 {
+    type Output = Vector3;
+    fn div(self, rhs: Self) -> Self::Output {
+        Self(self.0 / rhs.0)
+    }
+}
+
+impl ops::Div<f32> for Vector3 {
+    type Output = Vector3;
+    fn div(self, rhs: f32) -> Self::Output {
+        Self(self.0 / rhs)
+    }
+}
+
+impl IDiv for Vector3 {
+    type Output = Vector3;
+    fn idiv(self, rhs: Self) -> Self::Output {
+        Self((self.0 / rhs.0).floor())
+    }
+}
+
+impl IDiv<f32> for Vector3 {
+    type Output = Vector3;
+    fn idiv(self, rhs: f32) -> Self::Output {
+        Self((self.0 / rhs).floor())
+    }
+}
+
+impl From<DomVector3> for Vector3 {
+    fn from(v: DomVector3) -> Self {
+        Vector3(Vec3 {
+            x: v.x,
+            y: v.y,
+            z: v.z,
+        })
+    }
+}
+
+impl From<Vector3> for DomVector3 {
+    fn from(v: Vector3) -> Self {
+        DomVector3 {
+            x: round_float_decimal(v.0.x),
+            y: round_float_decimal(v.0.y),
+            z: round_float_decimal(v.0.z),
+        }
+    }
+}

crates/lune-roblox/src/datatypes/types/vector3int16.rs

@@ -5,6 +5,10 @@ use glam::IVec3;
 use mlua::prelude::*;
 use rbx_dom_weak::types::Vector3int16 as DomVector3int16;
 
+use lune_utils::TableBuilder;
+
+use crate::exports::LuaExportsTable;
+
 use super::super::*;
 
 /**
@@ -17,18 +21,21 @@ use super::super::*;
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Vector3int16(pub IVec3);
 
-impl Vector3int16 {
-    pub(crate) fn make_table(lua: &Lua, datatype_table: &LuaTable) -> LuaResult<()> {
-        datatype_table.set(
-            "new",
-            lua.create_function(|_, (x, y, z): (Option<i16>, Option<i16>, Option<i16>)| {
-                Ok(Vector3int16(IVec3 {
-                    x: x.unwrap_or_default() as i32,
-                    y: y.unwrap_or_default() as i32,
-                    z: z.unwrap_or_default() as i32,
-                }))
-            })?,
-        )
+impl LuaExportsTable<'_> for Vector3int16 {
+    const EXPORT_NAME: &'static str = "Vector3int16";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let vector3int16_new = |_, (x, y, z): (Option<i16>, Option<i16>, Option<i16>)| {
+            Ok(Vector3int16(IVec3 {
+                x: x.unwrap_or_default() as i32,
+                y: y.unwrap_or_default() as i32,
+                z: z.unwrap_or_default() as i32,
+            }))
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", vector3int16_new)?
+            .build_readonly()
     }
 }
 

crates/lune-roblox/src/datatypes/util.rs

@@ -0,0 +1,16 @@
+// HACK: We round to the nearest Very Small Decimal
+// to reduce writing out floating point accumulation
+// errors to files (mostly relevant for xml formats)
+const ROUNDING: usize = 65_536; // 2 ^ 16
+
+pub fn round_float_decimal(value: f32) -> f32 {
+    let place = ROUNDING as f32;
+
+    // Round only the fractional part, we do not want to
+    // lose any float precision in case a user for some
+    // reason has very very large float numbers in files
+    let whole = value.trunc();
+    let fract = (value.fract() * place).round() / place;
+
+    whole + fract
+}

crates/lune-roblox/src/document/error.rs

@@ -7,9 +7,9 @@ pub enum DocumentError {
     UnknownKind,
     #[error("Unknown document format")]
     UnknownFormat,
-    #[error("Failed to read document from buffer")]
+    #[error("Failed to read document from buffer - {0}")]
     ReadError(String),
-    #[error("Failed to write document to buffer")]
+    #[error("Failed to write document to buffer - {0}")]
     WriteError(String),
     #[error("Failed to convert into a DataModel - the given document is not a place")]
     IntoDataModelInvalidArgs,

crates/lune-roblox/src/document/kind.rs

@@ -58,13 +58,14 @@ impl DocumentKind {
 
         Returns `None` if the given dom is empty and as such can not have its kind inferred.
     */
+    #[must_use]
     pub fn from_weak_dom(dom: &WeakDom) -> Option<Self> {
         let mut has_top_level_child = false;
         let mut has_top_level_service = false;
         for child_ref in dom.root().children() {
             if let Some(child_inst) = dom.get_by_ref(*child_ref) {
                 has_top_level_child = true;
-                if class_is_a_service(&child_inst.class).unwrap_or(false) {
+                if class_is_a_service(child_inst.class).unwrap_or(false) {
                     has_top_level_service = true;
                     break;
                 }

crates/lune-roblox/src/document/mod.rs

@@ -1,4 +1,4 @@
-use rbx_dom_weak::{InstanceBuilder as DomInstanceBuilder, WeakDom};
+use rbx_dom_weak::{types::Ref as DomRef, InstanceBuilder as DomInstanceBuilder, WeakDom};
 use rbx_xml::{
     DecodeOptions as XmlDecodeOptions, DecodePropertyBehavior as XmlDecodePropertyBehavior,
     EncodeOptions as XmlEncodeOptions, EncodePropertyBehavior as XmlEncodePropertyBehavior,
@@ -7,11 +7,14 @@ use rbx_xml::{
 mod error;
 mod format;
 mod kind;
+mod postprocessing;
 
 pub use error::*;
 pub use format::*;
 pub use kind::*;
 
+use postprocessing::*;
+
 use crate::instance::{data_model, Instance};
 
 pub type DocumentResult<T> = Result<T, DocumentError>;
@@ -75,6 +78,7 @@ impl Document {
         | Model | Binary | `rbxm`    |
         | Model | Xml    | `rbxmx`   |
     */
+    #[must_use]
 	#[rustfmt::skip]
     pub fn canonical_extension(kind: DocumentKind, format: DocumentFormat) -> &'static str {
         match (kind, format) {
@@ -110,6 +114,10 @@ impl Document {
         Note that detection of model vs place file is heavily dependent on the structure
         of the file, and a model file with services in it will detect as a place file, so
         if possible using [`Document::from_bytes`] with an explicit kind should be preferred.
+
+        # Errors
+
+        Errors if the given bytes are not a valid roblox file.
     */
     pub fn from_bytes_auto(bytes: impl AsRef<[u8]>) -> DocumentResult<Self> {
         let (format, dom) = Self::from_bytes_inner(bytes)?;
@@ -122,6 +130,10 @@ impl Document {
 
         This will automatically handle and detect if the document
         should be decoded using a roblox binary or roblox xml format.
+
+        # Errors
+
+        Errors if the given bytes are not a valid roblox file or not of the given kind.
     */
     pub fn from_bytes(bytes: impl AsRef<[u8]>, kind: DocumentKind) -> DocumentResult<Self> {
         let (format, dom) = Self::from_bytes_inner(bytes)?;
@@ -135,6 +147,10 @@ impl Document {
         This will use the same format that the document was created
         with, meaning if the document is a binary document the output
         will be binary, and vice versa for xml and other future formats.
+
+        # Errors
+
+        Errors if the document can not be encoded.
     */
     pub fn to_bytes(&self) -> DocumentResult<Vec<u8>> {
         self.to_bytes_with_format(self.format)
@@ -143,6 +159,10 @@ impl Document {
     /**
         Encodes the document as a vector of bytes, to
         be written to a file or sent over the network.
+
+        # Errors
+
+        Errors if the document can not be encoded.
     */
     pub fn to_bytes_with_format(&self, format: DocumentFormat) -> DocumentResult<Vec<u8>> {
         let mut bytes = Vec::new();
@@ -169,6 +189,7 @@ impl Document {
     /**
         Gets the kind this document was created with.
     */
+    #[must_use]
     pub fn kind(&self) -> DocumentKind {
         self.kind
     }
@@ -176,6 +197,7 @@ impl Document {
     /**
         Gets the format this document was created with.
     */
+    #[must_use]
     pub fn format(&self) -> DocumentFormat {
         self.format
     }
@@ -183,14 +205,17 @@ impl Document {
     /**
         Gets the file extension for this document.
     */
+    #[must_use]
     pub fn extension(&self) -> &'static str {
         Self::canonical_extension(self.kind, self.format)
     }
 
     /**
-        Creates a DataModel instance out of this place document.
+        Creates a `DataModel` instance out of this place document.
 
-        Will error if the document is not a place.
+        # Errors
+
+        Errors if the document is not a place.
     */
     pub fn into_data_model_instance(mut self) -> DocumentResult<Instance> {
         if self.kind != DocumentKind::Place {
@@ -216,7 +241,9 @@ impl Document {
     /**
         Creates an array of instances out of this model document.
 
-        Will error if the document is not a model.
+        # Errors
+
+        Errors if the document is not a model.
     */
     pub fn into_instance_array(mut self) -> DocumentResult<Vec<Instance>> {
         if self.kind != DocumentKind::Model {
@@ -234,9 +261,11 @@ impl Document {
     }
 
     /**
-        Creates a place document out of a DataModel instance.
+        Creates a place document out of a `DataModel` instance.
 
-        Will error if the instance is not a DataModel.
+        # Errors
+
+        Errors if the instance is not a `DataModel`.
     */
     pub fn from_data_model_instance(i: Instance) -> DocumentResult<Self> {
         if i.get_class_name() != data_model::CLASS_NAME {
@@ -244,10 +273,14 @@ impl Document {
         }
 
         let mut dom = WeakDom::new(DomInstanceBuilder::new("ROOT"));
+        let children: Vec<DomRef> = i
+            .get_children()
+            .iter()
+            .map(|instance| instance.dom_ref)
+            .collect();
 
-        for data_model_child in i.get_children() {
-            data_model_child.clone_into_external_dom(&mut dom);
-        }
+        Instance::clone_multiple_into_external_dom(&children, &mut dom);
+        postprocess_dom_for_place(&mut dom);
 
         Ok(Self {
             kind: DocumentKind::Place,
@@ -259,7 +292,9 @@ impl Document {
     /**
         Creates a model document out of an array of instances.
 
-        Will error if any of the instances is a DataModel.
+        # Errors
+
+        Errors if any of the instances is a `DataModel`.
     */
     pub fn from_instance_array(v: Vec<Instance>) -> DocumentResult<Self> {
         for i in &v {
@@ -269,10 +304,10 @@ impl Document {
         }
 
         let mut dom = WeakDom::new(DomInstanceBuilder::new("ROOT"));
+        let instances: Vec<DomRef> = v.iter().map(|instance| instance.dom_ref).collect();
 
-        for instance in v {
-            instance.clone_into_external_dom(&mut dom);
-        }
+        Instance::clone_multiple_into_external_dom(&instances, &mut dom);
+        postprocess_dom_for_model(&mut dom);
 
         Ok(Self {
             kind: DocumentKind::Model,

crates/lune-roblox/src/document/postprocessing.rs

@@ -0,0 +1,48 @@
+use rbx_dom_weak::{
+    types::{Ref as DomRef, VariantType as DomType},
+    ustr, Instance as DomInstance, WeakDom,
+};
+
+use crate::shared::instance::class_is_a;
+
+pub fn postprocess_dom_for_place(_dom: &mut WeakDom) {
+    // Nothing here yet
+}
+
+pub fn postprocess_dom_for_model(dom: &mut WeakDom) {
+    let root_ref = dom.root_ref();
+    recurse_instances(dom, root_ref, &|inst| {
+        // Get rid of some unique ids - roblox does not
+        // save these in model files, and we shouldn't either
+        remove_matching_prop(inst, DomType::UniqueId, "UniqueId");
+        remove_matching_prop(inst, DomType::UniqueId, "HistoryId");
+        // Similar story with ScriptGuid - this is used
+        // in the studio-only cloud script drafts feature
+        if class_is_a(inst.class, "LuaSourceContainer").unwrap_or(false) {
+            inst.properties.remove(&ustr("ScriptGuid"));
+        }
+    });
+}
+
+fn recurse_instances<F>(dom: &mut WeakDom, dom_ref: DomRef, f: &F)
+where
+    F: Fn(&mut DomInstance) + 'static,
+{
+    let child_refs = match dom.get_by_ref_mut(dom_ref) {
+        Some(inst) => {
+            f(inst);
+            inst.children().to_vec()
+        }
+        None => Vec::new(),
+    };
+    for child_ref in child_refs {
+        recurse_instances(dom, child_ref, f);
+    }
+}
+
+fn remove_matching_prop(inst: &mut DomInstance, ty: DomType, name: &'static str) {
+    let name = &ustr(name);
+    if inst.properties.get(name).is_some_and(|u| u.ty() == ty) {
+        inst.properties.remove(name);
+    }
+}

crates/lune-roblox/src/exports.rs

@@ -0,0 +1,68 @@
+use mlua::prelude::*;
+
+/**
+    Trait for any item that should be exported as part of the `roblox` built-in library.
+
+    This may be an enum or a struct that should export constants and/or constructs.
+
+    ### Example usage
+
+    ```rs
+    use mlua::prelude::*;
+
+    struct MyType(usize);
+
+    impl MyType {
+        pub fn new(n: usize) -> Self {
+            Self(n)
+        }
+    }
+
+    impl LuaExportsTable<'_> for MyType {
+        const EXPORT_NAME: &'static str = "MyType";
+
+        fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+            let my_type_new = |lua, n: Option<usize>| {
+                Self::new(n.unwrap_or_default())
+            };
+
+            TableBuilder::new(lua)?
+                .with_function("new", my_type_new)?
+                .build_readonly()
+        }
+    }
+
+    impl LuaUserData for MyType {
+        // ...
+    }
+    ```
+*/
+pub trait LuaExportsTable<'lua> {
+    const EXPORT_NAME: &'static str;
+
+    fn create_exports_table(lua: &'lua Lua) -> LuaResult<LuaTable<'lua>>;
+}
+
+/**
+    Exports a single item that implements the [`LuaExportsTable`] trait.
+
+    Returns the name of the export, as well as the export table.
+
+    ### Example usage
+
+    ```rs
+    let lua: mlua::Lua::new();
+
+    let (name1, table1) = export::<Type1>(lua)?;
+    let (name2, table2) = export::<Type2>(lua)?;
+    ```
+*/
+pub fn export<'lua, T>(lua: &'lua Lua) -> LuaResult<(&'static str, LuaValue<'lua>)>
+where
+    T: LuaExportsTable<'lua>,
+{
+    Ok((
+        T::EXPORT_NAME,
+        <T as LuaExportsTable>::create_exports_table(lua)?.into_lua(lua)?,
+    ))
+}

crates/lune-roblox/src/instance/base.rs

@@ -0,0 +1,363 @@
+#![allow(clippy::items_after_statements)]
+
+use mlua::prelude::*;
+
+use rbx_dom_weak::{
+    types::{Variant as DomValue, VariantType as DomType},
+    Instance as DomInstance,
+};
+
+use crate::{
+    datatypes::{
+        attributes::{ensure_valid_attribute_name, ensure_valid_attribute_value},
+        conversion::{DomValueToLua, LuaToDomValue},
+        types::EnumItem,
+        userdata_impl_eq, userdata_impl_to_string,
+    },
+    shared::instance::{class_is_a, find_property_info},
+};
+
+use super::{data_model, registry::InstanceRegistry, Instance};
+
+#[allow(clippy::too_many_lines)]
+pub fn add_methods<'lua, M: LuaUserDataMethods<'lua, Instance>>(m: &mut M) {
+    m.add_meta_method(LuaMetaMethod::ToString, |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        userdata_impl_to_string(lua, this, ())
+    });
+    m.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+    m.add_meta_method(LuaMetaMethod::Index, instance_property_get);
+    m.add_meta_method_mut(LuaMetaMethod::NewIndex, instance_property_set);
+    m.add_method("Clone", |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        this.clone_instance().into_lua(lua)
+    });
+    m.add_method_mut("Destroy", |_, this, ()| {
+        this.destroy();
+        Ok(())
+    });
+    m.add_method_mut("ClearAllChildren", |_, this, ()| {
+        this.clear_all_children();
+        Ok(())
+    });
+    m.add_method("GetChildren", |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        this.get_children().into_lua(lua)
+    });
+    m.add_method("GetDescendants", |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        this.get_descendants().into_lua(lua)
+    });
+    m.add_method("GetFullName", |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        this.get_full_name().into_lua(lua)
+    });
+    m.add_method("GetDebugId", |lua, this, ()| {
+        this.dom_ref.to_string().into_lua(lua)
+    });
+    m.add_method("FindFirstAncestor", |lua, this, name: String| {
+        ensure_not_destroyed(this)?;
+        this.find_ancestor(|child| child.name == name).into_lua(lua)
+    });
+    m.add_method(
+        "FindFirstAncestorOfClass",
+        |lua, this, class_name: String| {
+            ensure_not_destroyed(this)?;
+            this.find_ancestor(|child| child.class == class_name)
+                .into_lua(lua)
+        },
+    );
+    m.add_method(
+        "FindFirstAncestorWhichIsA",
+        |lua, this, class_name: String| {
+            ensure_not_destroyed(this)?;
+            this.find_ancestor(|child| class_is_a(child.class, &class_name).unwrap_or(false))
+                .into_lua(lua)
+        },
+    );
+    m.add_method(
+        "FindFirstChild",
+        |lua, this, (name, recursive): (String, Option<bool>)| {
+            ensure_not_destroyed(this)?;
+            let predicate = |child: &DomInstance| child.name == name;
+            if matches!(recursive, Some(true)) {
+                this.find_descendant(predicate).into_lua(lua)
+            } else {
+                this.find_child(predicate).into_lua(lua)
+            }
+        },
+    );
+    m.add_method(
+        "FindFirstChildOfClass",
+        |lua, this, (class_name, recursive): (String, Option<bool>)| {
+            ensure_not_destroyed(this)?;
+            let predicate = |child: &DomInstance| child.class == class_name;
+            if matches!(recursive, Some(true)) {
+                this.find_descendant(predicate).into_lua(lua)
+            } else {
+                this.find_child(predicate).into_lua(lua)
+            }
+        },
+    );
+    m.add_method(
+        "FindFirstChildWhichIsA",
+        |lua, this, (class_name, recursive): (String, Option<bool>)| {
+            ensure_not_destroyed(this)?;
+            let predicate =
+                |child: &DomInstance| class_is_a(child.class, &class_name).unwrap_or(false);
+            if matches!(recursive, Some(true)) {
+                this.find_descendant(predicate).into_lua(lua)
+            } else {
+                this.find_child(predicate).into_lua(lua)
+            }
+        },
+    );
+    m.add_method("IsA", |_, this, class_name: String| {
+        Ok(class_is_a(this.class_name, class_name).unwrap_or(false))
+    });
+    m.add_method(
+        "IsAncestorOf",
+        |_, this, instance: LuaUserDataRef<Instance>| {
+            ensure_not_destroyed(this)?;
+            Ok(instance
+                .find_ancestor(|ancestor| ancestor.referent() == this.dom_ref)
+                .is_some())
+        },
+    );
+    m.add_method(
+        "IsDescendantOf",
+        |_, this, instance: LuaUserDataRef<Instance>| {
+            ensure_not_destroyed(this)?;
+            Ok(this
+                .find_ancestor(|ancestor| ancestor.referent() == instance.dom_ref)
+                .is_some())
+        },
+    );
+    m.add_method("GetAttribute", |lua, this, name: String| {
+        ensure_not_destroyed(this)?;
+        match this.get_attribute(name) {
+            Some(attribute) => Ok(LuaValue::dom_value_to_lua(lua, &attribute)?),
+            None => Ok(LuaValue::Nil),
+        }
+    });
+    m.add_method("GetAttributes", |lua, this, ()| {
+        ensure_not_destroyed(this)?;
+        let attributes = this.get_attributes();
+        let tab = lua.create_table_with_capacity(0, attributes.len())?;
+        for (key, value) in attributes {
+            tab.set(key, LuaValue::dom_value_to_lua(lua, &value)?)?;
+        }
+        Ok(tab)
+    });
+    m.add_method(
+        "SetAttribute",
+        |lua, this, (attribute_name, lua_value): (String, LuaValue)| {
+            ensure_not_destroyed(this)?;
+            ensure_valid_attribute_name(&attribute_name)?;
+            if lua_value.is_nil() || lua_value.is_null() {
+                this.remove_attribute(attribute_name);
+                Ok(())
+            } else {
+                match lua_value.lua_to_dom_value(lua, None) {
+                    Ok(dom_value) => {
+                        ensure_valid_attribute_value(&dom_value)?;
+                        this.set_attribute(attribute_name, dom_value);
+                        Ok(())
+                    }
+                    Err(e) => Err(e.into()),
+                }
+            }
+        },
+    );
+    m.add_method("GetTags", |_, this, ()| {
+        ensure_not_destroyed(this)?;
+        Ok(this.get_tags())
+    });
+    m.add_method("HasTag", |_, this, tag: String| {
+        ensure_not_destroyed(this)?;
+        Ok(this.has_tag(tag))
+    });
+    m.add_method("AddTag", |_, this, tag: String| {
+        ensure_not_destroyed(this)?;
+        this.add_tag(tag);
+        Ok(())
+    });
+    m.add_method("RemoveTag", |_, this, tag: String| {
+        ensure_not_destroyed(this)?;
+        this.remove_tag(tag);
+        Ok(())
+    });
+}
+
+fn ensure_not_destroyed(inst: &Instance) -> LuaResult<()> {
+    if inst.is_destroyed() {
+        Err(LuaError::RuntimeError(
+            "Instance has been destroyed".to_string(),
+        ))
+    } else {
+        Ok(())
+    }
+}
+
+/*
+    Gets a property value for an instance.
+
+    Getting a value does the following:
+
+    1. Check if it is a special property like "ClassName", "Name" or "Parent"
+    2. Check if a property exists for the wanted name
+        2a. Get an existing instance property OR
+        2b. Get a property from a known default value
+    3. Get a current child of the instance
+    4. No valid property or instance found, throw error
+*/
+fn instance_property_get<'lua>(
+    lua: &'lua Lua,
+    this: &Instance,
+    prop_name: String,
+) -> LuaResult<LuaValue<'lua>> {
+    match prop_name.as_str() {
+        "ClassName" => return this.get_class_name().into_lua(lua),
+        "Parent" => {
+            return this.get_parent().into_lua(lua);
+        }
+        _ => {}
+    }
+
+    ensure_not_destroyed(this)?;
+
+    if prop_name.as_str() == "Name" {
+        return this.get_name().into_lua(lua);
+    }
+
+    if let Some(info) = find_property_info(this.class_name, &prop_name) {
+        if let Some(prop) = this.get_property(&prop_name) {
+            if let DomValue::Enum(enum_value) = prop {
+                let enum_name = info.enum_name.ok_or_else(|| {
+                    LuaError::RuntimeError(format!(
+                        "Failed to get property '{prop_name}' - encountered unknown enum",
+                    ))
+                })?;
+                EnumItem::from_enum_name_and_value(&enum_name, enum_value.to_u32())
+                    .ok_or_else(|| {
+                        LuaError::RuntimeError(format!(
+                            "Failed to get property '{}' - Enum.{} does not contain numeric value {}",
+                            prop_name, enum_name, enum_value.to_u32()
+                        ))
+                    })?
+                    .into_lua(lua)
+            } else {
+                Ok(LuaValue::dom_value_to_lua(lua, &prop)?)
+            }
+        } else if let (Some(enum_name), Some(enum_value)) = (info.enum_name, info.enum_default) {
+            EnumItem::from_enum_name_and_value(&enum_name, enum_value)
+                .ok_or_else(|| {
+                    LuaError::RuntimeError(format!(
+                        "Failed to get property '{prop_name}' - Enum.{enum_name} does not contain numeric value {enum_value}",
+                    ))
+                })?
+                .into_lua(lua)
+        } else if let Some(prop_default) = info.value_default {
+            Ok(LuaValue::dom_value_to_lua(lua, prop_default)?)
+        } else if info.value_type.is_some() {
+            if info.value_type == Some(DomType::Ref) {
+                Ok(LuaValue::Nil)
+            } else {
+                Err(LuaError::RuntimeError(format!(
+                    "Failed to get property '{prop_name}' - missing default value",
+                )))
+            }
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "Failed to get property '{prop_name}' - malformed property info",
+            )))
+        }
+    } else if let Some(inst) = this.find_child(|inst| inst.name == prop_name) {
+        Ok(LuaValue::UserData(lua.create_userdata(inst)?))
+    } else if let Some(getter) = InstanceRegistry::find_property_getter(lua, this, &prop_name) {
+        getter.call(*this)
+    } else if let Some(method) = InstanceRegistry::find_method(lua, this, &prop_name) {
+        Ok(LuaValue::Function(method))
+    } else {
+        Err(LuaError::RuntimeError(format!(
+            "{prop_name} is not a valid member of {this}",
+        )))
+    }
+}
+
+/*
+    Sets a property value for an instance.
+
+    Setting a value does the following:
+
+    1. Check if it is a special property like "ClassName", "Name" or "Parent"
+    2. Check if a property exists for the wanted name
+        2a. Set a strict enum from a given EnumItem OR
+        2b. Set a normal property from a given value
+*/
+fn instance_property_set<'lua>(
+    lua: &'lua Lua,
+    this: &mut Instance,
+    (prop_name, prop_value): (String, LuaValue<'lua>),
+) -> LuaResult<()> {
+    ensure_not_destroyed(this)?;
+
+    match prop_name.as_str() {
+        "ClassName" => {
+            return Err(LuaError::RuntimeError(
+                "Failed to set ClassName - property is read-only".to_string(),
+            ));
+        }
+        "Name" => {
+            let name = String::from_lua(prop_value, lua)?;
+            this.set_name(name);
+            return Ok(());
+        }
+        "Parent" => {
+            if this.get_class_name() == data_model::CLASS_NAME {
+                return Err(LuaError::RuntimeError(
+                    "Failed to set Parent - DataModel can not be reparented".to_string(),
+                ));
+            }
+            type Parent<'lua> = Option<LuaUserDataRef<'lua, Instance>>;
+            let parent = Parent::from_lua(prop_value, lua)?;
+            this.set_parent(parent.map(|p| *p));
+            return Ok(());
+        }
+        _ => {}
+    }
+
+    if let Some(info) = find_property_info(this.class_name, &prop_name) {
+        if let Some(enum_name) = info.enum_name {
+            match LuaUserDataRef::<EnumItem>::from_lua(prop_value, lua) {
+                Ok(given_enum) if given_enum.parent.desc.name == enum_name => {
+                    this.set_property(prop_name, DomValue::EnumItem((*given_enum).clone().into()));
+                    Ok(())
+                }
+                Ok(given_enum) => Err(LuaError::RuntimeError(format!(
+                    "Failed to set property '{}' - expected Enum.{}, got Enum.{}",
+                    prop_name, enum_name, given_enum.parent.desc.name
+                ))),
+                Err(e) => Err(e),
+            }
+        } else if let Some(dom_type) = info.value_type {
+            match prop_value.lua_to_dom_value(lua, Some(dom_type)) {
+                Ok(dom_value) => {
+                    this.set_property(prop_name, dom_value);
+                    Ok(())
+                }
+                Err(e) => Err(e.into()),
+            }
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "Failed to set property '{prop_name}' - malformed property info",
+            )))
+        }
+    } else if let Some(setter) = InstanceRegistry::find_property_setter(lua, this, &prop_name) {
+        setter.call((*this, prop_value))
+    } else {
+        Err(LuaError::RuntimeError(format!(
+            "{prop_name} is not a valid member of {this}",
+        )))
+    }
+}

crates/lune-roblox/src/instance/data_model.rs

@@ -0,0 +1,77 @@
+use mlua::prelude::*;
+
+use crate::shared::{
+    classes::{
+        add_class_restricted_getter, add_class_restricted_method,
+        get_or_create_property_ref_instance,
+    },
+    instance::class_is_a_service,
+};
+
+use super::Instance;
+
+pub const CLASS_NAME: &str = "DataModel";
+
+pub fn add_fields<'lua, F: LuaUserDataFields<'lua, Instance>>(f: &mut F) {
+    add_class_restricted_getter(f, CLASS_NAME, "Workspace", data_model_get_workspace);
+}
+
+pub fn add_methods<'lua, M: LuaUserDataMethods<'lua, Instance>>(m: &mut M) {
+    add_class_restricted_method(m, CLASS_NAME, "GetService", data_model_get_service);
+    add_class_restricted_method(m, CLASS_NAME, "FindService", data_model_find_service);
+}
+
+/**
+    Get the workspace parented under this datamodel, or create it if it doesn't exist.
+
+    ### See Also
+    * [`Terrain`](https://create.roblox.com/docs/reference/engine/classes/Workspace#Terrain)
+      on the Roblox Developer Hub
+*/
+fn data_model_get_workspace(_: &Lua, this: &Instance) -> LuaResult<Instance> {
+    get_or_create_property_ref_instance(this, "Workspace", "Workspace")
+}
+
+/**
+    Gets or creates a service for this `DataModel`.
+
+    ### See Also
+    * [`GetService`](https://create.roblox.com/docs/reference/engine/classes/ServiceProvider#GetService)
+      on the Roblox Developer Hub
+*/
+fn data_model_get_service(_: &Lua, this: &Instance, service_name: String) -> LuaResult<Instance> {
+    if matches!(class_is_a_service(&service_name), None | Some(false)) {
+        Err(LuaError::RuntimeError(format!(
+            "'{service_name}' is not a valid service name",
+        )))
+    } else if let Some(service) = this.find_child(|child| child.class == service_name) {
+        Ok(service)
+    } else {
+        let service = Instance::new_orphaned(service_name);
+        service.set_parent(Some(*this));
+        Ok(service)
+    }
+}
+
+/**
+    Gets a service for this `DataModel`, if it exists.
+
+    ### See Also
+    * [`FindService`](https://create.roblox.com/docs/reference/engine/classes/ServiceProvider#FindService)
+      on the Roblox Developer Hub
+*/
+fn data_model_find_service(
+    _: &Lua,
+    this: &Instance,
+    service_name: String,
+) -> LuaResult<Option<Instance>> {
+    if matches!(class_is_a_service(&service_name), None | Some(false)) {
+        Err(LuaError::RuntimeError(format!(
+            "'{service_name}' is not a valid service name",
+        )))
+    } else if let Some(service) = this.find_child(|child| child.class == service_name) {
+        Ok(Some(service))
+    } else {
+        Ok(None)
+    }
+}

crates/lune-roblox/src/instance/mod.rs

@@ -0,0 +1,803 @@
+#![allow(clippy::missing_panics_doc)]
+
+use std::{
+    collections::{BTreeMap, VecDeque},
+    fmt,
+    hash::{Hash, Hasher},
+    sync::Mutex,
+};
+
+use mlua::prelude::*;
+use once_cell::sync::Lazy;
+use rbx_dom_weak::{
+    types::{Attributes as DomAttributes, Ref as DomRef, Variant as DomValue},
+    ustr, Instance as DomInstance, InstanceBuilder as DomInstanceBuilder, Ustr, WeakDom,
+};
+
+use lune_utils::TableBuilder;
+
+use crate::{
+    exports::LuaExportsTable,
+    shared::instance::{class_exists, class_is_a},
+};
+
+pub(crate) mod base;
+pub(crate) mod data_model;
+pub(crate) mod terrain;
+pub(crate) mod workspace;
+
+pub mod registry;
+
+const PROPERTY_NAME_ATTRIBUTES: &str = "Attributes";
+const PROPERTY_NAME_TAGS: &str = "Tags";
+
+static INTERNAL_DOM: Lazy<Mutex<WeakDom>> =
+    Lazy::new(|| Mutex::new(WeakDom::new(DomInstanceBuilder::new("ROOT"))));
+
+#[derive(Debug, Clone, Copy)]
+pub struct Instance {
+    pub(crate) dom_ref: DomRef,
+    pub(crate) class_name: Ustr,
+}
+
+impl Instance {
+    /**
+        Creates a new `Instance` from an existing dom object ref.
+
+        Panics if the instance does not exist in the internal dom,
+        or if the given dom object ref points to the internal dom root.
+
+        **WARNING:** Creating a new instance requires locking the internal dom,
+        any existing lock must first be released to prevent any deadlocking.
+    */
+    #[must_use]
+    pub fn new(dom_ref: DomRef) -> Self {
+        Self::new_opt(dom_ref).expect("Failed to find instance in document")
+    }
+
+    /**
+        Creates a new `Instance` from a dom object ref, if the instance exists.
+
+        Panics if the given dom object ref points to the internal dom root.
+
+        **WARNING:** Creating a new instance requires locking the internal dom,
+        any existing lock must first be released to prevent any deadlocking.
+    */
+    #[must_use]
+    pub fn new_opt(dom_ref: DomRef) -> Option<Self> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        if let Some(instance) = dom.get_by_ref(dom_ref) {
+            assert!(
+                !(instance.referent() == dom.root_ref()),
+                "Instances can not be created from dom roots"
+            );
+
+            Some(Self {
+                dom_ref,
+                class_name: instance.class,
+            })
+        } else {
+            None
+        }
+    }
+
+    /**
+        Creates a new orphaned `Instance` with a given class name.
+
+        An orphaned instance is an instance at the root of Lune's internal weak dom.
+
+        **WARNING:** Creating a new instance requires locking the internal dom,
+        any existing lock must first be released to prevent any deadlocking.
+    */
+    #[must_use]
+    pub fn new_orphaned(class_name: impl AsRef<str>) -> Self {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let class_name = class_name.as_ref();
+
+        let instance = DomInstanceBuilder::new(class_name);
+
+        let dom_root = dom.root_ref();
+        let dom_ref = dom.insert(dom_root, instance);
+
+        Self {
+            dom_ref,
+            class_name: ustr(class_name),
+        }
+    }
+
+    /**
+        Creates a new orphaned `Instance` by transferring
+        it from an external weak dom to the internal one.
+
+        An orphaned instance is an instance at the root of Lune's internal weak dom.
+
+        Panics if the given dom ref is the root dom ref of the external weak dom.
+    */
+    #[must_use]
+    pub fn from_external_dom(external_dom: &mut WeakDom, external_dom_ref: DomRef) -> Self {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let dom_root = dom.root_ref();
+
+        external_dom.transfer(external_dom_ref, &mut dom, dom_root);
+
+        drop(dom); // Self::new needs mutex handle, drop it first
+        Self::new(external_dom_ref)
+    }
+
+    /**
+        Clones an instance to an external weak dom.
+
+        This will place the instance as a child of the
+        root of the weak dom, and return its referent.
+    */
+    pub fn clone_into_external_dom(self, external_dom: &mut WeakDom) -> DomRef {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let cloned = dom.clone_into_external(self.dom_ref, external_dom);
+        external_dom.transfer_within(cloned, external_dom.root_ref());
+
+        cloned
+    }
+
+    /**
+        Clones multiple instances to an external weak dom.
+
+        This will place the instances as children of the
+        root of the weak dom, and return their referents.
+    */
+    pub fn clone_multiple_into_external_dom(
+        referents: &[DomRef],
+        external_dom: &mut WeakDom,
+    ) -> Vec<DomRef> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let cloned = dom.clone_multiple_into_external(referents, external_dom);
+
+        for referent in &cloned {
+            external_dom.transfer_within(*referent, external_dom.root_ref());
+        }
+
+        cloned
+    }
+
+    /**
+        Clones the instance and all of its descendants, and orphans it.
+
+        To then save the new instance it must be re-parented,
+        which matches the exact behavior of Roblox's instances.
+
+        ### See Also
+        * [`Clone`](https://create.roblox.com/docs/reference/engine/classes/Instance#Clone)
+          on the Roblox Developer Hub
+    */
+    #[must_use]
+    pub fn clone_instance(&self) -> Self {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let new_ref = dom.clone_within(self.dom_ref);
+        drop(dom); // Self::new needs mutex handle, drop it first
+
+        let new_inst = Self::new(new_ref);
+        new_inst.set_parent(None);
+        new_inst
+    }
+
+    /**
+        Destroys the instance, removing it completely
+        from the weak dom with no way of recovering it.
+
+        All member methods will throw errors when called from lua and panic
+        when called from rust after the instance has been destroyed.
+
+        Returns `true` if destroyed successfully, `false` if already destroyed.
+
+        ### See Also
+        * [`Destroy`](https://create.roblox.com/docs/reference/engine/classes/Instance#Destroy)
+          on the Roblox Developer Hub
+    */
+    pub fn destroy(&mut self) -> bool {
+        if self.is_destroyed() {
+            false
+        } else {
+            let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+            dom.destroy(self.dom_ref);
+            true
+        }
+    }
+
+    fn is_destroyed(&self) -> bool {
+        // NOTE: This property can not be cached since instance references
+        // other than this one may have destroyed this one, and we don't
+        // keep track of all current instance reference structs
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        dom.get_by_ref(self.dom_ref).is_none()
+    }
+
+    /**
+        Destroys all child instances.
+
+        ### See Also
+        * [`Instance::Destroy`] for more info about what happens when an instance gets destroyed
+        * [`ClearAllChildren`](https://create.roblox.com/docs/reference/engine/classes/Instance#ClearAllChildren)
+          on the Roblox Developer Hub
+    */
+    pub fn clear_all_children(&mut self) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let instance = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document");
+
+        let child_refs = instance.children().to_vec();
+        for child_ref in child_refs {
+            dom.destroy(child_ref);
+        }
+    }
+
+    /**
+        Checks if the instance matches or inherits a given class name.
+
+        ### See Also
+        * [`IsA`](https://create.roblox.com/docs/reference/engine/classes/Instance#IsA)
+          on the Roblox Developer Hub
+    */
+    pub fn is_a(&self, class_name: impl AsRef<str>) -> bool {
+        class_is_a(self.class_name, class_name).unwrap_or(false)
+    }
+
+    /**
+        Gets the class name of the instance.
+
+        This will return the correct class name even if the instance has been destroyed.
+
+        ### See Also
+        * [`ClassName`](https://create.roblox.com/docs/reference/engine/classes/Instance#ClassName)
+          on the Roblox Developer Hub
+    */
+    #[must_use]
+    pub fn get_class_name(&self) -> &str {
+        self.class_name.as_str()
+    }
+
+    /**
+        Gets the name of the instance, if it exists.
+
+        ### See Also
+        * [`Name`](https://create.roblox.com/docs/reference/engine/classes/Instance#Name)
+          on the Roblox Developer Hub
+    */
+    pub fn get_name(&self) -> String {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        dom.get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .name
+            .clone()
+    }
+
+    /**
+        Sets the name of the instance, if it exists.
+
+        ### See Also
+        * [`Name`](https://create.roblox.com/docs/reference/engine/classes/Instance#Name)
+          on the Roblox Developer Hub
+    */
+    pub fn set_name(&self, name: impl Into<String>) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        dom.get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .name = name.into();
+    }
+
+    /**
+        Gets the parent of the instance, if it exists.
+
+        ### See Also
+        * [`Parent`](https://create.roblox.com/docs/reference/engine/classes/Instance#Parent)
+          on the Roblox Developer Hub
+    */
+    pub fn get_parent(&self) -> Option<Instance> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let parent_ref = dom.get_by_ref(self.dom_ref)?.parent();
+
+        if parent_ref == dom.root_ref() {
+            None
+        } else {
+            drop(dom); // Self::new needs mutex handle, drop it first
+            Some(Self::new(parent_ref))
+        }
+    }
+
+    /**
+        Sets the parent of the instance, if it exists.
+
+        If the provided parent is [`None`] the instance will become orphaned.
+
+        An orphaned instance is an instance at the root of Lune's internal weak dom.
+
+        ### See Also
+        * [`Parent`](https://create.roblox.com/docs/reference/engine/classes/Instance#Parent)
+          on the Roblox Developer Hub
+    */
+    pub fn set_parent(&self, parent: Option<Instance>) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let parent_ref = parent.map_or_else(|| dom.root_ref(), |parent| parent.dom_ref);
+
+        dom.transfer_within(self.dom_ref, parent_ref);
+    }
+
+    /**
+        Gets a property for the instance, if it exists.
+    */
+    pub fn get_property(&self, name: impl AsRef<str>) -> Option<DomValue> {
+        INTERNAL_DOM
+            .lock()
+            .expect("Failed to lock document")
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .properties
+            .get(&ustr(name.as_ref()))
+            .cloned()
+    }
+
+    /**
+        Sets a property for the instance.
+
+        Note that setting a property here will not fail even if the
+        property does not actually exist for the instance class.
+    */
+    pub fn set_property(&self, name: impl AsRef<str>, value: DomValue) {
+        INTERNAL_DOM
+            .lock()
+            .expect("Failed to lock document")
+            .get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .properties
+            .insert(ustr(name.as_ref()), value);
+    }
+
+    /**
+        Gets an attribute for the instance, if it exists.
+
+        ### See Also
+        * [`GetAttribute`](https://create.roblox.com/docs/reference/engine/classes/Instance#GetAttribute)
+          on the Roblox Developer Hub
+    */
+    pub fn get_attribute(&self, name: impl AsRef<str>) -> Option<DomValue> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Attributes(attributes)) =
+            inst.properties.get(&ustr(PROPERTY_NAME_ATTRIBUTES))
+        {
+            attributes.get(name.as_ref()).cloned()
+        } else {
+            None
+        }
+    }
+
+    /**
+        Gets all known attributes for the instance.
+
+        ### See Also
+        * [`GetAttributes`](https://create.roblox.com/docs/reference/engine/classes/Instance#GetAttributes)
+          on the Roblox Developer Hub
+    */
+    pub fn get_attributes(&self) -> BTreeMap<String, DomValue> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Attributes(attributes)) =
+            inst.properties.get(&ustr(PROPERTY_NAME_ATTRIBUTES))
+        {
+            attributes.clone().into_iter().collect()
+        } else {
+            BTreeMap::new()
+        }
+    }
+
+    /**
+        Sets an attribute for the instance.
+
+        ### See Also
+        * [`SetAttribute`](https://create.roblox.com/docs/reference/engine/classes/Instance#SetAttribute)
+          on the Roblox Developer Hub
+    */
+    pub fn set_attribute(&self, name: impl AsRef<str>, value: DomValue) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document");
+        // NOTE: Attributes do not support integers, only floats
+        let value = match value {
+            DomValue::Int32(i) => DomValue::Float32(i as f32),
+            DomValue::Int64(i) => DomValue::Float64(i as f64),
+            value => value,
+        };
+        if let Some(DomValue::Attributes(attributes)) =
+            inst.properties.get_mut(&ustr(PROPERTY_NAME_ATTRIBUTES))
+        {
+            attributes.insert(name.as_ref().to_string(), value);
+        } else {
+            let mut attributes = DomAttributes::new();
+            attributes.insert(name.as_ref().to_string(), value);
+            inst.properties.insert(
+                ustr(PROPERTY_NAME_ATTRIBUTES),
+                DomValue::Attributes(attributes),
+            );
+        }
+    }
+
+    /**
+        Removes an attribute from the instance.
+
+        Note that this does not have an equivalent in the Roblox engine API,
+        but separating this from `set_attribute` lets `set_attribute` be more
+        ergonomic and not require an `Option<DomValue>` for the value argument.
+        The equivalent in the Roblox engine API would be `instance:SetAttribute(name, nil)`.
+    */
+    pub fn remove_attribute(&self, name: impl AsRef<str>) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Attributes(attributes)) =
+            inst.properties.get_mut(&ustr(PROPERTY_NAME_ATTRIBUTES))
+        {
+            attributes.remove(name.as_ref());
+            if attributes.is_empty() {
+                inst.properties.remove(&ustr(PROPERTY_NAME_ATTRIBUTES));
+            }
+        }
+    }
+
+    /**
+        Adds a tag to the instance.
+
+        ### See Also
+        * [`AddTag`](https://create.roblox.com/docs/reference/engine/classes/CollectionService#AddTag)
+          on the Roblox Developer Hub
+    */
+    pub fn add_tag(&self, name: impl AsRef<str>) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Tags(tags)) = inst.properties.get_mut(&ustr(PROPERTY_NAME_TAGS)) {
+            tags.push(name.as_ref());
+        } else {
+            inst.properties.insert(
+                ustr(PROPERTY_NAME_TAGS),
+                DomValue::Tags(vec![name.as_ref().to_string()].into()),
+            );
+        }
+    }
+
+    /**
+        Gets all current tags for the instance.
+
+        ### See Also
+        * [`GetTags`](https://create.roblox.com/docs/reference/engine/classes/CollectionService#GetTags)
+          on the Roblox Developer Hub
+    */
+    pub fn get_tags(&self) -> Vec<String> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Tags(tags)) = inst.properties.get(&ustr(PROPERTY_NAME_TAGS)) {
+            tags.iter().map(ToString::to_string).collect()
+        } else {
+            Vec::new()
+        }
+    }
+
+    /**
+        Checks if the instance has a specific tag.
+
+        ### See Also
+        * [`HasTag`](https://create.roblox.com/docs/reference/engine/classes/CollectionService#HasTag)
+          on the Roblox Developer Hub
+    */
+    pub fn has_tag(&self, name: impl AsRef<str>) -> bool {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Tags(tags)) = inst.properties.get(&ustr(PROPERTY_NAME_TAGS)) {
+            let name = name.as_ref();
+            tags.iter().any(|tag| tag == name)
+        } else {
+            false
+        }
+    }
+
+    /**
+        Removes a tag from the instance.
+
+        ### See Also
+        * [`RemoveTag`](https://create.roblox.com/docs/reference/engine/classes/CollectionService#RemoveTag)
+          on the Roblox Developer Hub
+    */
+    pub fn remove_tag(&self, name: impl AsRef<str>) {
+        let mut dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let inst = dom
+            .get_by_ref_mut(self.dom_ref)
+            .expect("Failed to find instance in document");
+        if let Some(DomValue::Tags(tags)) = inst.properties.get_mut(&ustr(PROPERTY_NAME_TAGS)) {
+            let name = name.as_ref();
+            let mut new_tags = tags.iter().map(ToString::to_string).collect::<Vec<_>>();
+            new_tags.retain(|tag| tag != name);
+            inst.properties
+                .insert(ustr(PROPERTY_NAME_TAGS), DomValue::Tags(new_tags.into()));
+        }
+    }
+
+    /**
+        Gets all of the current children of this `Instance`.
+
+        Note that this is a somewhat expensive operation and that other
+        operations using weak dom referents should be preferred if possible.
+
+        ### See Also
+        * [`GetChildren`](https://create.roblox.com/docs/reference/engine/classes/Instance#GetChildren)
+          on the Roblox Developer Hub
+    */
+    pub fn get_children(&self) -> Vec<Instance> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let children = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .children()
+            .to_vec();
+
+        drop(dom); // Self::new needs mutex handle, drop it first
+        children.into_iter().map(Self::new).collect()
+    }
+
+    /**
+        Gets all of the current descendants of this `Instance` using a breadth-first search.
+
+        Note that this is a somewhat expensive operation and that other
+        operations using weak dom referents should be preferred if possible.
+
+        ### See Also
+        * [`GetDescendants`](https://create.roblox.com/docs/reference/engine/classes/Instance#GetDescendants)
+          on the Roblox Developer Hub
+    */
+    pub fn get_descendants(&self) -> Vec<Instance> {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let mut descendants = Vec::new();
+        let mut queue = VecDeque::from_iter(
+            dom.get_by_ref(self.dom_ref)
+                .expect("Failed to find instance in document")
+                .children(),
+        );
+
+        while let Some(queue_ref) = queue.pop_front() {
+            descendants.push(*queue_ref);
+            let queue_inst = dom.get_by_ref(*queue_ref).unwrap();
+            for queue_ref_inner in queue_inst.children().iter().rev() {
+                queue.push_back(queue_ref_inner);
+            }
+        }
+
+        drop(dom); // Self::new needs mutex handle, drop it first
+        descendants.into_iter().map(Self::new).collect()
+    }
+
+    /**
+        Gets the "full name" of this instance.
+
+        This will be a path composed of instance names from the top-level
+        ancestor of this instance down to itself, in the following format:
+
+        `Ancestor.Child.Descendant.Instance`
+
+        ### See Also
+        * [`GetFullName`](https://create.roblox.com/docs/reference/engine/classes/Instance#GetFullName)
+          on the Roblox Developer Hub
+    */
+    pub fn get_full_name(&self) -> String {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+        let dom_root = dom.root_ref();
+
+        let mut parts = Vec::new();
+        let mut instance_ref = self.dom_ref;
+
+        while let Some(instance) = dom.get_by_ref(instance_ref) {
+            if instance_ref != dom_root && instance.class != data_model::CLASS_NAME {
+                instance_ref = instance.parent();
+                parts.push(instance.name.clone());
+            } else {
+                break;
+            }
+        }
+
+        parts.reverse();
+        parts.join(".")
+    }
+
+    /**
+        Finds a child of the instance using the given predicate callback.
+
+        ### See Also
+        * [`FindFirstChild`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstChild) on the Roblox Developer Hub
+        * [`FindFirstChildOfClass`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstChildOfClass) on the Roblox Developer Hub
+        * [`FindFirstChildWhichIsA`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstChildWhichIsA) on the Roblox Developer Hub
+    */
+    pub fn find_child<F>(&self, predicate: F) -> Option<Instance>
+    where
+        F: Fn(&DomInstance) -> bool,
+    {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let children = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .children()
+            .to_vec();
+
+        let found_ref = children.into_iter().find(|child_ref| {
+            if let Some(child_inst) = dom.get_by_ref(*child_ref) {
+                predicate(child_inst)
+            } else {
+                false
+            }
+        });
+
+        drop(dom); // Self::new needs mutex handle, drop it first
+        found_ref.map(Self::new)
+    }
+
+    /**
+        Finds an ancestor of the instance using the given predicate callback.
+
+        ### See Also
+        * [`FindFirstAncestor`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstAncestor) on the Roblox Developer Hub
+        * [`FindFirstAncestorOfClass`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstAncestorOfClass) on the Roblox Developer Hub
+        * [`FindFirstAncestorWhichIsA`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstAncestorWhichIsA) on the Roblox Developer Hub
+    */
+    pub fn find_ancestor<F>(&self, predicate: F) -> Option<Instance>
+    where
+        F: Fn(&DomInstance) -> bool,
+    {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let mut ancestor_ref = dom
+            .get_by_ref(self.dom_ref)
+            .expect("Failed to find instance in document")
+            .parent();
+
+        while let Some(ancestor) = dom.get_by_ref(ancestor_ref) {
+            if predicate(ancestor) {
+                drop(dom); // Self::new needs mutex handle, drop it first
+                return Some(Self::new(ancestor_ref));
+            }
+            ancestor_ref = ancestor.parent();
+        }
+
+        None
+    }
+
+    /**
+        Finds a descendant of the instance using the given
+        predicate callback and a breadth-first search.
+
+        ### See Also
+        * [`FindFirstDescendant`](https://create.roblox.com/docs/reference/engine/classes/Instance#FindFirstDescendant)
+            on the Roblox Developer Hub
+    */
+    pub fn find_descendant<F>(&self, predicate: F) -> Option<Instance>
+    where
+        F: Fn(&DomInstance) -> bool,
+    {
+        let dom = INTERNAL_DOM.lock().expect("Failed to lock document");
+
+        let mut queue = VecDeque::from_iter(
+            dom.get_by_ref(self.dom_ref)
+                .expect("Failed to find instance in document")
+                .children(),
+        );
+
+        while let Some(queue_item) = queue
+            .pop_front()
+            .and_then(|queue_ref| dom.get_by_ref(*queue_ref))
+        {
+            if predicate(queue_item) {
+                let queue_ref = queue_item.referent();
+                drop(dom); // Self::new needs mutex handle, drop it first
+                return Some(Self::new(queue_ref));
+            }
+            queue.extend(queue_item.children());
+        }
+
+        None
+    }
+}
+
+impl LuaExportsTable<'_> for Instance {
+    const EXPORT_NAME: &'static str = "Instance";
+
+    fn create_exports_table(lua: &Lua) -> LuaResult<LuaTable> {
+        let instance_new = |lua, class_name: String| {
+            if class_exists(&class_name) {
+                Instance::new_orphaned(class_name).into_lua(lua)
+            } else {
+                Err(LuaError::RuntimeError(format!(
+                    "Failed to create Instance - '{class_name}' is not a valid class name",
+                )))
+            }
+        };
+
+        TableBuilder::new(lua)?
+            .with_function("new", instance_new)?
+            .build_readonly()
+    }
+}
+
+/*
+    Here we add inheritance-like behavior for instances by creating
+    fields that are restricted to specific classnames / base classes
+
+    Note that we should try to be conservative with how many classes
+    and methods we support here - we should only implement methods that
+    are necessary for modifying the dom and / or having ergonomic access
+    to the dom, not try to replicate Roblox engine behavior of instances
+
+    If a user wants to replicate Roblox engine behavior, they can use the
+    instance registry, and register properties + methods from the lua side
+*/
+impl LuaUserData for Instance {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        data_model::add_fields(fields);
+        workspace::add_fields(fields);
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        base::add_methods(methods);
+        data_model::add_methods(methods);
+        terrain::add_methods(methods);
+    }
+}
+
+impl Hash for Instance {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.dom_ref.hash(state);
+    }
+}
+
+impl fmt::Display for Instance {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "{}",
+            if self.is_destroyed() {
+                "<<DESTROYED>>".to_string()
+            } else {
+                self.get_name()
+            }
+        )
+    }
+}
+
+impl PartialEq for Instance {
+    fn eq(&self, other: &Self) -> bool {
+        self.dom_ref == other.dom_ref
+    }
+}
+
+impl From<Instance> for DomRef {
+    fn from(value: Instance) -> Self {
+        value.dom_ref
+    }
+}

crates/lune-roblox/src/instance/registry.rs

@@ -0,0 +1,274 @@
+use std::{
+    borrow::Borrow,
+    collections::HashMap,
+    sync::{Arc, Mutex},
+};
+
+use mlua::{prelude::*, AppDataRef};
+use thiserror::Error;
+
+use super::Instance;
+
+type InstanceRegistryMap = HashMap<String, HashMap<String, LuaRegistryKey>>;
+
+#[derive(Debug, Clone, Error)]
+pub enum InstanceRegistryError {
+    #[error("class name '{0}' is not valid")]
+    InvalidClassName(String),
+    #[error("class '{class_name}' already registered method '{method_name}'")]
+    MethodAlreadyExists {
+        class_name: String,
+        method_name: String,
+    },
+    #[error("class '{class_name}' already registered property '{property_name}'")]
+    PropertyAlreadyExists {
+        class_name: String,
+        property_name: String,
+    },
+}
+
+#[derive(Debug, Clone)]
+pub struct InstanceRegistry {
+    getters: Arc<Mutex<InstanceRegistryMap>>,
+    setters: Arc<Mutex<InstanceRegistryMap>>,
+    methods: Arc<Mutex<InstanceRegistryMap>>,
+}
+
+impl InstanceRegistry {
+    // NOTE: We lazily create the instance registry instead
+    // of always creating it together with the roblox builtin
+    // since it is less commonly used and it simplifies some app
+    // data borrowing relationship problems we'd otherwise have
+    fn get_or_create(lua: &Lua) -> AppDataRef<'_, Self> {
+        if lua.app_data_ref::<Self>().is_none() {
+            lua.set_app_data(Self {
+                getters: Arc::new(Mutex::new(HashMap::new())),
+                setters: Arc::new(Mutex::new(HashMap::new())),
+                methods: Arc::new(Mutex::new(HashMap::new())),
+            });
+        }
+        lua.app_data_ref::<Self>()
+            .expect("Missing InstanceRegistry in app data")
+    }
+
+    /**
+        Inserts a method into the instance registry.
+
+        # Errors
+
+        - If the method already exists in the registry.
+    */
+    pub fn insert_method<'lua>(
+        lua: &'lua Lua,
+        class_name: &str,
+        method_name: &str,
+        method: LuaFunction<'lua>,
+    ) -> Result<(), InstanceRegistryError> {
+        let registry = Self::get_or_create(lua);
+
+        let mut methods = registry
+            .methods
+            .lock()
+            .expect("Failed to lock instance registry methods");
+
+        let class_methods = methods.entry(class_name.to_string()).or_default();
+        if class_methods.contains_key(method_name) {
+            return Err(InstanceRegistryError::MethodAlreadyExists {
+                class_name: class_name.to_string(),
+                method_name: method_name.to_string(),
+            });
+        }
+
+        let key = lua
+            .create_registry_value(method)
+            .expect("Failed to store method in lua registry");
+        class_methods.insert(method_name.to_string(), key);
+
+        Ok(())
+    }
+
+    /**
+        Inserts a property getter into the instance registry.
+
+        # Errors
+
+        - If the property already exists in the registry.
+    */
+    pub fn insert_property_getter<'lua>(
+        lua: &'lua Lua,
+        class_name: &str,
+        property_name: &str,
+        property_getter: LuaFunction<'lua>,
+    ) -> Result<(), InstanceRegistryError> {
+        let registry = Self::get_or_create(lua);
+
+        let mut getters = registry
+            .getters
+            .lock()
+            .expect("Failed to lock instance registry getters");
+
+        let class_getters = getters.entry(class_name.to_string()).or_default();
+        if class_getters.contains_key(property_name) {
+            return Err(InstanceRegistryError::PropertyAlreadyExists {
+                class_name: class_name.to_string(),
+                property_name: property_name.to_string(),
+            });
+        }
+
+        let key = lua
+            .create_registry_value(property_getter)
+            .expect("Failed to store getter in lua registry");
+        class_getters.insert(property_name.to_string(), key);
+
+        Ok(())
+    }
+
+    /**
+        Inserts a property setter into the instance registry.
+
+        # Errors
+
+        - If the property already exists in the registry.
+    */
+    pub fn insert_property_setter<'lua>(
+        lua: &'lua Lua,
+        class_name: &str,
+        property_name: &str,
+        property_setter: LuaFunction<'lua>,
+    ) -> Result<(), InstanceRegistryError> {
+        let registry = Self::get_or_create(lua);
+
+        let mut setters = registry
+            .setters
+            .lock()
+            .expect("Failed to lock instance registry getters");
+
+        let class_setters = setters.entry(class_name.to_string()).or_default();
+        if class_setters.contains_key(property_name) {
+            return Err(InstanceRegistryError::PropertyAlreadyExists {
+                class_name: class_name.to_string(),
+                property_name: property_name.to_string(),
+            });
+        }
+
+        let key = lua
+            .create_registry_value(property_setter)
+            .expect("Failed to store getter in lua registry");
+        class_setters.insert(property_name.to_string(), key);
+
+        Ok(())
+    }
+
+    /**
+        Finds a method in the instance registry.
+
+        Returns `None` if the method is not found.
+    */
+    #[must_use]
+    pub fn find_method<'lua>(
+        lua: &'lua Lua,
+        instance: &Instance,
+        method_name: &str,
+    ) -> Option<LuaFunction<'lua>> {
+        let registry = Self::get_or_create(lua);
+        let methods = registry
+            .methods
+            .lock()
+            .expect("Failed to lock instance registry methods");
+
+        class_name_chain(&instance.class_name)
+            .iter()
+            .find_map(|&class_name| {
+                methods
+                    .get(class_name)
+                    .and_then(|class_methods| class_methods.get(method_name))
+                    .map(|key| lua.registry_value::<LuaFunction>(key).unwrap())
+            })
+    }
+
+    /**
+        Finds a property getter in the instance registry.
+
+        Returns `None` if the property getter is not found.
+    */
+    #[must_use]
+    pub fn find_property_getter<'lua>(
+        lua: &'lua Lua,
+        instance: &Instance,
+        property_name: &str,
+    ) -> Option<LuaFunction<'lua>> {
+        let registry = Self::get_or_create(lua);
+        let getters = registry
+            .getters
+            .lock()
+            .expect("Failed to lock instance registry getters");
+
+        class_name_chain(&instance.class_name)
+            .iter()
+            .find_map(|&class_name| {
+                getters
+                    .get(class_name)
+                    .and_then(|class_getters| class_getters.get(property_name))
+                    .map(|key| lua.registry_value::<LuaFunction>(key).unwrap())
+            })
+    }
+
+    /**
+        Finds a property setter in the instance registry.
+
+        Returns `None` if the property setter is not found.
+    */
+    #[must_use]
+    pub fn find_property_setter<'lua>(
+        lua: &'lua Lua,
+        instance: &Instance,
+        property_name: &str,
+    ) -> Option<LuaFunction<'lua>> {
+        let registry = Self::get_or_create(lua);
+        let setters = registry
+            .setters
+            .lock()
+            .expect("Failed to lock instance registry setters");
+
+        class_name_chain(&instance.class_name)
+            .iter()
+            .find_map(|&class_name| {
+                setters
+                    .get(class_name)
+                    .and_then(|class_setters| class_setters.get(property_name))
+                    .map(|key| lua.registry_value::<LuaFunction>(key).unwrap())
+            })
+    }
+}
+
+/**
+    Gets the class name chain for a given class name.
+
+    The chain starts with the given class name and ends with the root class.
+
+    # Panics
+
+    Panics if the class name is not valid.
+*/
+#[must_use]
+pub fn class_name_chain(class_name: &str) -> Vec<&str> {
+    let db = rbx_reflection_database::get();
+
+    let mut list = vec![class_name];
+    let mut current_name = class_name;
+
+    loop {
+        let class_descriptor = db
+            .classes
+            .get(current_name)
+            .expect("Got invalid class name");
+        if let Some(sup) = &class_descriptor.superclass {
+            current_name = sup.borrow();
+            list.push(current_name);
+        } else {
+            break;
+        }
+    }
+
+    list
+}

crates/lune-roblox/src/instance/terrain.rs

@@ -0,0 +1,93 @@
+use mlua::prelude::*;
+use rbx_dom_weak::types::{MaterialColors, TerrainMaterials, Variant};
+
+use crate::{
+    datatypes::types::{Color3, EnumItem},
+    shared::classes::{add_class_restricted_method, add_class_restricted_method_mut},
+};
+
+use super::Instance;
+
+pub const CLASS_NAME: &str = "Terrain";
+
+pub fn add_methods<'lua, M: LuaUserDataMethods<'lua, Instance>>(methods: &mut M) {
+    add_class_restricted_method(
+        methods,
+        CLASS_NAME,
+        "GetMaterialColor",
+        terrain_get_material_color,
+    );
+
+    add_class_restricted_method_mut(
+        methods,
+        CLASS_NAME,
+        "SetMaterialColor",
+        terrain_set_material_color,
+    );
+}
+
+fn get_or_create_material_colors(instance: &Instance) -> MaterialColors {
+    if let Some(Variant::MaterialColors(inner)) = instance.get_property("MaterialColors") {
+        inner
+    } else {
+        MaterialColors::default()
+    }
+}
+
+/**
+    Returns the color of the given terrain material.
+
+    ### See Also
+    * [`GetMaterialColor`](https://create.roblox.com/docs/reference/engine/classes/Terrain#GetMaterialColor)
+      on the Roblox Developer Hub
+*/
+fn terrain_get_material_color(_: &Lua, this: &Instance, material: EnumItem) -> LuaResult<Color3> {
+    let material_colors = get_or_create_material_colors(this);
+
+    if &material.parent.desc.name != "Material" {
+        return Err(LuaError::RuntimeError(format!(
+            "Expected Enum.Material, got Enum.{}",
+            &material.parent.desc.name
+        )));
+    }
+
+    let terrain_material = material
+        .name
+        .parse::<TerrainMaterials>()
+        .map_err(|err| LuaError::RuntimeError(err.to_string()))?;
+
+    Ok(material_colors.get_color(terrain_material).into())
+}
+
+/**
+    Sets the color of the given terrain material.
+
+    ### See Also
+    * [`SetMaterialColor`](https://create.roblox.com/docs/reference/engine/classes/Terrain#SetMaterialColor)
+      on the Roblox Developer Hub
+*/
+fn terrain_set_material_color(
+    _: &Lua,
+    this: &mut Instance,
+    args: (EnumItem, Color3),
+) -> LuaResult<()> {
+    let mut material_colors = get_or_create_material_colors(this);
+    let material = args.0;
+    let color = args.1;
+
+    if &material.parent.desc.name != "Material" {
+        return Err(LuaError::RuntimeError(format!(
+            "Expected Enum.Material, got Enum.{}",
+            &material.parent.desc.name
+        )));
+    }
+
+    let terrain_material = material
+        .name
+        .parse::<TerrainMaterials>()
+        .map_err(|err| LuaError::RuntimeError(err.to_string()))?;
+
+    material_colors.set_color(terrain_material, color.into());
+    this.set_property("MaterialColors", Variant::MaterialColors(material_colors));
+    Ok(())
+}

crates/lune-roblox/src/instance/workspace.rs

@@ -0,0 +1,34 @@
+use mlua::prelude::*;
+
+use crate::shared::classes::{add_class_restricted_getter, get_or_create_property_ref_instance};
+
+use super::Instance;
+
+pub const CLASS_NAME: &str = "Workspace";
+
+pub fn add_fields<'lua, F: LuaUserDataFields<'lua, Instance>>(f: &mut F) {
+    add_class_restricted_getter(f, CLASS_NAME, "Terrain", workspace_get_terrain);
+    add_class_restricted_getter(f, CLASS_NAME, "CurrentCamera", workspace_get_camera);
+}
+
+/**
+    Get the terrain parented under this workspace, or create it if it doesn't exist.
+
+    ### See Also
+    * [`Terrain`](https://create.roblox.com/docs/reference/engine/classes/Workspace#Terrain)
+      on the Roblox Developer Hub
+*/
+fn workspace_get_terrain(_: &Lua, this: &Instance) -> LuaResult<Instance> {
+    get_or_create_property_ref_instance(this, "Terrain", "Terrain")
+}
+
+/**
+    Get the camera parented under this workspace, or create it if it doesn't exist.
+
+    ### See Also
+    * [`CurrentCamera`](https://create.roblox.com/docs/reference/engine/classes/Workspace#CurrentCamera)
+      on the Roblox Developer Hub
+*/
+fn workspace_get_camera(_: &Lua, this: &Instance) -> LuaResult<Instance> {
+    get_or_create_property_ref_instance(this, "CurrentCamera", "Camera")
+}

crates/lune-roblox/src/lib.rs

@@ -0,0 +1,72 @@
+#![allow(clippy::cargo_common_metadata)]
+
+use mlua::prelude::*;
+
+use lune_utils::TableBuilder;
+
+pub mod datatypes;
+pub mod document;
+pub mod instance;
+pub mod reflection;
+
+pub(crate) mod exports;
+pub(crate) mod shared;
+
+use exports::export;
+
+fn create_all_exports(lua: &Lua) -> LuaResult<Vec<(&'static str, LuaValue)>> {
+    use datatypes::types::*;
+    use instance::Instance;
+    Ok(vec![
+        // Datatypes
+        export::<Axes>(lua)?,
+        export::<BrickColor>(lua)?,
+        export::<CFrame>(lua)?,
+        export::<Color3>(lua)?,
+        export::<ColorSequence>(lua)?,
+        export::<ColorSequenceKeypoint>(lua)?,
+        export::<Content>(lua)?,
+        export::<Faces>(lua)?,
+        export::<Font>(lua)?,
+        export::<NumberRange>(lua)?,
+        export::<NumberSequence>(lua)?,
+        export::<NumberSequenceKeypoint>(lua)?,
+        export::<PhysicalProperties>(lua)?,
+        export::<Ray>(lua)?,
+        export::<Rect>(lua)?,
+        export::<UDim>(lua)?,
+        export::<UDim2>(lua)?,
+        export::<Region3>(lua)?,
+        export::<Region3int16>(lua)?,
+        export::<Vector2>(lua)?,
+        export::<Vector2int16>(lua)?,
+        export::<Vector3>(lua)?,
+        export::<Vector3int16>(lua)?,
+        // Classes
+        export::<Instance>(lua)?,
+        // Singletons
+        ("Enum", Enums.into_lua(lua)?),
+    ])
+}
+
+/**
+    Creates a table containing all the Roblox datatypes, classes, and singletons.
+
+    Note that this is not guaranteed to contain any value unless indexed directly,
+    it may be optimized to use lazy initialization in the future.
+
+    # Errors
+
+    Errors when out of memory or when a value cannot be created.
+*/
+pub fn module(lua: &Lua) -> LuaResult<LuaTable> {
+    // FUTURE: We can probably create these lazily as users
+    // index the main exports (this return value) table and
+    // save some memory and startup time. The full exports
+    // table is quite big and probably won't get any smaller
+    // since we impl all roblox constructors for each datatype.
+    let exports = create_all_exports(lua)?;
+    TableBuilder::new(lua)?
+        .with_values(exports)?
+        .build_readonly()
+}

crates/lune-roblox/src/reflection/class.rs

@@ -0,0 +1,155 @@
+use core::fmt;
+use std::collections::HashMap;
+
+use mlua::prelude::*;
+
+use rbx_dom_weak::types::Variant as DomVariant;
+use rbx_reflection::{ClassDescriptor, DataType};
+
+use super::{property::DatabaseProperty, utils::*};
+use crate::datatypes::{
+    conversion::DomValueToLua, types::EnumItem, userdata_impl_eq, userdata_impl_to_string,
+};
+
+type DbClass = &'static ClassDescriptor<'static>;
+
+/**
+    A wrapper for [`rbx_reflection::ClassDescriptor`] that
+    also provides access to the class descriptor from lua.
+*/
+#[derive(Debug, Clone, Copy)]
+pub struct DatabaseClass(DbClass);
+
+impl DatabaseClass {
+    pub(crate) fn new(inner: DbClass) -> Self {
+        Self(inner)
+    }
+
+    /**
+        Get the name of this class.
+    */
+    #[must_use]
+    pub fn get_name(&self) -> String {
+        self.0.name.to_string()
+    }
+
+    /**
+        Get the superclass (parent class) of this class.
+
+        May be `None` if no parent class exists.
+    */
+    #[must_use]
+    pub fn get_superclass(&self) -> Option<String> {
+        let sup = self.0.superclass.as_ref()?;
+        Some(sup.to_string())
+    }
+
+    /**
+        Get all known properties for this class.
+    */
+    #[must_use]
+    pub fn get_properties(&self) -> HashMap<String, DatabaseProperty> {
+        self.0
+            .properties
+            .iter()
+            .map(|(name, prop)| (name.to_string(), DatabaseProperty::new(self.0, prop)))
+            .collect()
+    }
+
+    /**
+        Get all default values for properties of this class.
+    */
+    #[must_use]
+    pub fn get_defaults(&self) -> HashMap<String, DomVariant> {
+        self.0
+            .default_properties
+            .iter()
+            .map(|(name, prop)| (name.to_string(), prop.clone()))
+            .collect()
+    }
+
+    /**
+        Get all tags describing the class.
+
+        These include information such as if the class can be replicated
+        to players at runtime, and top-level class categories.
+    */
+    pub fn get_tags_str(&self) -> Vec<&'static str> {
+        self.0
+            .tags
+            .iter()
+            .copied()
+            .map(class_tag_to_str)
+            .collect::<Vec<_>>()
+    }
+}
+
+impl LuaUserData for DatabaseClass {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Name", |_, this| Ok(this.get_name()));
+        fields.add_field_method_get("Superclass", |_, this| Ok(this.get_superclass()));
+        fields.add_field_method_get("Properties", |_, this| Ok(this.get_properties()));
+        fields.add_field_method_get("DefaultProperties", |lua, this| {
+            let defaults = this.get_defaults();
+            let mut map = HashMap::with_capacity(defaults.len());
+            for (name, prop) in defaults {
+                let value = if let DomVariant::Enum(enum_value) = prop {
+                    make_enum_value(this.0, &name, enum_value.to_u32())
+                        .and_then(|e| e.into_lua(lua))
+                } else {
+                    LuaValue::dom_value_to_lua(lua, &prop).into_lua_err()
+                };
+                if let Ok(value) = value {
+                    map.insert(name, value);
+                }
+            }
+            Ok(map)
+        });
+        fields.add_field_method_get("Tags", |_, this| Ok(this.get_tags_str()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl PartialEq for DatabaseClass {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.name == other.0.name
+    }
+}
+
+impl fmt::Display for DatabaseClass {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "ReflectionDatabaseClass({})", self.0.name)
+    }
+}
+
+fn find_enum_name(inner: DbClass, name: impl AsRef<str>) -> Option<String> {
+    inner.properties.iter().find_map(|(prop_name, prop_info)| {
+        if prop_name == name.as_ref() {
+            if let DataType::Enum(enum_name) = &prop_info.data_type {
+                Some(enum_name.to_string())
+            } else {
+                None
+            }
+        } else {
+            None
+        }
+    })
+}
+
+fn make_enum_value(inner: DbClass, name: impl AsRef<str>, value: u32) -> LuaResult<EnumItem> {
+    let name = name.as_ref();
+    let enum_name = find_enum_name(inner, name).ok_or_else(|| {
+        LuaError::RuntimeError(format!(
+            "Failed to get default property '{name}' - No enum descriptor was found",
+        ))
+    })?;
+    EnumItem::from_enum_name_and_value(&enum_name, value).ok_or_else(|| {
+        LuaError::RuntimeError(format!(
+            "Failed to get default property '{name}' - Enum.{enum_name} does not contain numeric value {value}",
+        ))
+    })
+}

crates/lune-roblox/src/reflection/enums.rs

@@ -0,0 +1,69 @@
+use std::{collections::HashMap, fmt};
+
+use mlua::prelude::*;
+
+use rbx_reflection::EnumDescriptor;
+
+use crate::datatypes::{userdata_impl_eq, userdata_impl_to_string};
+
+type DbEnum = &'static EnumDescriptor<'static>;
+
+/**
+    A wrapper for [`rbx_reflection::EnumDescriptor`] that
+    also provides access to the class descriptor from lua.
+*/
+#[derive(Debug, Clone, Copy)]
+pub struct DatabaseEnum(DbEnum);
+
+impl DatabaseEnum {
+    pub(crate) fn new(inner: DbEnum) -> Self {
+        Self(inner)
+    }
+
+    /**
+        Get the name of this enum.
+    */
+    #[must_use]
+    pub fn get_name(&self) -> String {
+        self.0.name.to_string()
+    }
+
+    /**
+        Get all known members of this enum.
+
+        Note that this is a direct map of name -> enum values,
+        and does not actually use the `EnumItem` datatype itself.
+    */
+    #[must_use]
+    pub fn get_items(&self) -> HashMap<String, u32> {
+        self.0
+            .items
+            .iter()
+            .map(|(k, v)| (k.to_string(), *v))
+            .collect()
+    }
+}
+
+impl LuaUserData for DatabaseEnum {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Name", |_, this| Ok(this.get_name()));
+        fields.add_field_method_get("Items", |_, this| Ok(this.get_items()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl PartialEq for DatabaseEnum {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.name == other.0.name
+    }
+}
+
+impl fmt::Display for DatabaseEnum {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "ReflectionDatabaseEnum({})", self.0.name)
+    }
+}

crates/lune-roblox/src/reflection/mod.rs

@@ -0,0 +1,151 @@
+use std::fmt;
+
+use mlua::prelude::*;
+
+use rbx_reflection::ReflectionDatabase;
+
+use crate::datatypes::userdata_impl_eq;
+
+mod class;
+mod enums;
+mod property;
+mod utils;
+
+pub use class::DatabaseClass;
+pub use enums::DatabaseEnum;
+pub use property::DatabaseProperty;
+
+use super::datatypes::userdata_impl_to_string;
+
+type Db = &'static ReflectionDatabase<'static>;
+
+/**
+    A wrapper for [`rbx_reflection::ReflectionDatabase`] that
+    also provides access to the reflection database from lua.
+*/
+#[derive(Debug, Clone, Copy)]
+pub struct Database(Db);
+
+impl Database {
+    /**
+        Creates a new database struct, referencing the bundled reflection database.
+    */
+    #[must_use]
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /**
+        Get the version string of the database.
+
+        This will follow the format `x.y.z.w`, which most
+        commonly looks something like `0.567.0.123456789`.
+    */
+    #[must_use]
+    pub fn get_version(&self) -> String {
+        let [x, y, z, w] = self.0.version;
+        format!("{x}.{y}.{z}.{w}")
+    }
+
+    /**
+        Retrieves a list of all currently known enum names.
+    */
+    #[must_use]
+    pub fn get_enum_names(&self) -> Vec<String> {
+        self.0.enums.keys().map(ToString::to_string).collect()
+    }
+
+    /**
+        Retrieves a list of all currently known class names.
+    */
+    #[must_use]
+    pub fn get_class_names(&self) -> Vec<String> {
+        self.0.classes.keys().map(ToString::to_string).collect()
+    }
+
+    /**
+        Gets an enum with the exact given name, if one exists.
+    */
+    pub fn get_enum(&self, name: impl AsRef<str>) -> Option<DatabaseEnum> {
+        let e = self.0.enums.get(name.as_ref())?;
+        Some(DatabaseEnum::new(e))
+    }
+
+    /**
+        Gets a class with the exact given name, if one exists.
+    */
+    pub fn get_class(&self, name: impl AsRef<str>) -> Option<DatabaseClass> {
+        let c = self.0.classes.get(name.as_ref())?;
+        Some(DatabaseClass::new(c))
+    }
+
+    /**
+        Finds an enum with the given name.
+
+        This will use case-insensitive matching and ignore leading and trailing whitespace.
+    */
+    pub fn find_enum(&self, name: impl AsRef<str>) -> Option<DatabaseEnum> {
+        let name = name.as_ref().trim().to_lowercase();
+        let (ename, _) = self
+            .0
+            .enums
+            .iter()
+            .find(|(ename, _)| ename.trim().to_lowercase() == name)?;
+        self.get_enum(ename)
+    }
+
+    /**
+        Finds a class with the given name.
+
+        This will use case-insensitive matching and ignore leading and trailing whitespace.
+    */
+    pub fn find_class(&self, name: impl AsRef<str>) -> Option<DatabaseClass> {
+        let name = name.as_ref().trim().to_lowercase();
+        let (cname, _) = self
+            .0
+            .classes
+            .iter()
+            .find(|(cname, _)| cname.trim().to_lowercase() == name)?;
+        self.get_class(cname)
+    }
+}
+
+impl LuaUserData for Database {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Version", |_, this| Ok(this.get_version()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+        methods.add_method("GetEnumNames", |_, this, (): ()| Ok(this.get_enum_names()));
+        methods.add_method(
+            "GetClassNames",
+            |_, this, (): ()| Ok(this.get_class_names()),
+        );
+        methods.add_method("GetEnum", |_, this, name: String| Ok(this.get_enum(name)));
+        methods.add_method("GetClass", |_, this, name: String| Ok(this.get_class(name)));
+        methods.add_method("FindEnum", |_, this, name: String| Ok(this.find_enum(name)));
+        methods.add_method("FindClass", |_, this, name: String| {
+            Ok(this.find_class(name))
+        });
+    }
+}
+
+impl Default for Database {
+    fn default() -> Self {
+        Self(rbx_reflection_database::get())
+    }
+}
+
+impl PartialEq for Database {
+    fn eq(&self, _other: &Self) -> bool {
+        true // All database userdatas refer to the same underlying rbx-dom database
+    }
+}
+
+impl fmt::Display for Database {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "ReflectionDatabase")
+    }
+}

crates/lune-roblox/src/reflection/property.rs

@@ -0,0 +1,99 @@
+use std::fmt;
+
+use mlua::prelude::*;
+
+use rbx_reflection::{ClassDescriptor, PropertyDescriptor};
+
+use super::utils::*;
+use crate::datatypes::{userdata_impl_eq, userdata_impl_to_string};
+
+type DbClass = &'static ClassDescriptor<'static>;
+type DbProp = &'static PropertyDescriptor<'static>;
+
+/**
+    A wrapper for [`rbx_reflection::PropertyDescriptor`] that
+    also provides access to the property descriptor from lua.
+*/
+#[derive(Debug, Clone, Copy)]
+pub struct DatabaseProperty(DbClass, DbProp);
+
+impl DatabaseProperty {
+    pub(crate) fn new(inner: DbClass, inner_prop: DbProp) -> Self {
+        Self(inner, inner_prop)
+    }
+
+    /**
+        Get the name of this property.
+    */
+    #[must_use]
+    pub fn get_name(&self) -> String {
+        self.1.name.to_string()
+    }
+
+    /**
+        Get the datatype name of the property.
+
+        For normal datatypes this will be a string such as `string`, `Color3`, ...
+
+        For enums this will be a string formatted as `Enum.EnumName`.
+    */
+    #[must_use]
+    pub fn get_datatype_name(&self) -> String {
+        data_type_to_str(self.1.data_type.clone())
+    }
+
+    /**
+        Get the scriptability of this property, meaning if it can be written / read at runtime.
+
+        All properties are writable and readable in Lune even if scriptability is not.
+    */
+    #[must_use]
+    pub fn get_scriptability_str(&self) -> &'static str {
+        scriptability_to_str(self.1.scriptability)
+    }
+
+    /**
+        Get all known tags describing the property.
+
+        These include information such as if the property can be replicated to players
+        at runtime, if the property should be hidden in Roblox Studio, and more.
+    */
+    pub fn get_tags_str(&self) -> Vec<&'static str> {
+        self.1
+            .tags
+            .iter()
+            .copied()
+            .map(property_tag_to_str)
+            .collect::<Vec<_>>()
+    }
+}
+
+impl LuaUserData for DatabaseProperty {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("Name", |_, this| Ok(this.get_name()));
+        fields.add_field_method_get("Datatype", |_, this| Ok(this.get_datatype_name()));
+        fields.add_field_method_get("Scriptability", |_, this| Ok(this.get_scriptability_str()));
+        fields.add_field_method_get("Tags", |_, this| Ok(this.get_tags_str()));
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        methods.add_meta_method(LuaMetaMethod::Eq, userdata_impl_eq);
+        methods.add_meta_method(LuaMetaMethod::ToString, userdata_impl_to_string);
+    }
+}
+
+impl PartialEq for DatabaseProperty {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.name == other.0.name && self.1.name == other.1.name
+    }
+}
+
+impl fmt::Display for DatabaseProperty {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "ReflectionDatabaseProperty({} > {})",
+            self.0.name, self.1.name
+        )
+    }
+}

crates/lune-roblox/src/reflection/utils.rs

@@ -0,0 +1,56 @@
+use rbx_reflection::{ClassTag, DataType, PropertyTag, Scriptability};
+
+use crate::datatypes::extension::DomValueExt;
+
+pub fn data_type_to_str(data_type: DataType) -> String {
+    match data_type {
+        DataType::Enum(e) => format!("Enum.{e}"),
+        DataType::Value(v) => v
+            .variant_name()
+            .expect("Encountered unknown data type variant")
+            .to_string(),
+        _ => panic!("Encountered unknown data type"),
+    }
+}
+
+/*
+     NOTE: Remember to add any new strings here to typedefs too!
+*/
+
+pub fn scriptability_to_str(scriptability: Scriptability) -> &'static str {
+    match scriptability {
+        Scriptability::None => "None",
+        Scriptability::Custom => "Custom",
+        Scriptability::Read => "Read",
+        Scriptability::ReadWrite => "ReadWrite",
+        Scriptability::Write => "Write",
+        _ => panic!("Encountered unknown scriptability"),
+    }
+}
+
+pub fn property_tag_to_str(tag: PropertyTag) -> &'static str {
+    match tag {
+        PropertyTag::Deprecated => "Deprecated",
+        PropertyTag::Hidden => "Hidden",
+        PropertyTag::NotBrowsable => "NotBrowsable",
+        PropertyTag::NotReplicated => "NotReplicated",
+        PropertyTag::NotScriptable => "NotScriptable",
+        PropertyTag::ReadOnly => "ReadOnly",
+        PropertyTag::WriteOnly => "WriteOnly",
+        _ => panic!("Encountered unknown property tag"),
+    }
+}
+
+pub fn class_tag_to_str(tag: ClassTag) -> &'static str {
+    match tag {
+        ClassTag::Deprecated => "Deprecated",
+        ClassTag::NotBrowsable => "NotBrowsable",
+        ClassTag::NotCreatable => "NotCreatable",
+        ClassTag::NotReplicated => "NotReplicated",
+        ClassTag::PlayerReplicated => "PlayerReplicated",
+        ClassTag::Service => "Service",
+        ClassTag::Settings => "Settings",
+        ClassTag::UserSettings => "UserSettings",
+        _ => panic!("Encountered unknown class tag"),
+    }
+}

crates/lune-roblox/src/shared/classes.rs

@@ -0,0 +1,129 @@
+use mlua::prelude::*;
+
+use rbx_dom_weak::types::Variant as DomValue;
+
+use crate::instance::Instance;
+
+use super::instance::class_is_a;
+
+pub(crate) fn add_class_restricted_getter<'lua, F: LuaUserDataFields<'lua, Instance>, R, G>(
+    fields: &mut F,
+    class_name: &'static str,
+    field_name: &'static str,
+    field_getter: G,
+) where
+    R: IntoLua<'lua>,
+    G: 'static + Fn(&'lua Lua, &Instance) -> LuaResult<R>,
+{
+    fields.add_field_method_get(field_name, move |lua, this| {
+        if class_is_a(this.get_class_name(), class_name).unwrap_or(false) {
+            field_getter(lua, this)
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "{field_name} is not a valid member of {class_name}",
+            )))
+        }
+    });
+}
+
+#[allow(dead_code)]
+pub(crate) fn add_class_restricted_setter<'lua, F: LuaUserDataFields<'lua, Instance>, A, G>(
+    fields: &mut F,
+    class_name: &'static str,
+    field_name: &'static str,
+    field_getter: G,
+) where
+    A: FromLua<'lua>,
+    G: 'static + Fn(&'lua Lua, &Instance, A) -> LuaResult<()>,
+{
+    fields.add_field_method_set(field_name, move |lua, this, value| {
+        if class_is_a(this.get_class_name(), class_name).unwrap_or(false) {
+            field_getter(lua, this, value)
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "{field_name} is not a valid member of {class_name}",
+            )))
+        }
+    });
+}
+
+pub(crate) fn add_class_restricted_method<'lua, M: LuaUserDataMethods<'lua, Instance>, A, R, F>(
+    methods: &mut M,
+    class_name: &'static str,
+    method_name: &'static str,
+    method: F,
+) where
+    A: FromLuaMulti<'lua>,
+    R: IntoLuaMulti<'lua>,
+    F: 'static + Fn(&'lua Lua, &Instance, A) -> LuaResult<R>,
+{
+    methods.add_method(method_name, move |lua, this, args| {
+        if class_is_a(this.get_class_name(), class_name).unwrap_or(false) {
+            method(lua, this, args)
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "{method_name} is not a valid member of {class_name}",
+            )))
+        }
+    });
+}
+
+pub(crate) fn add_class_restricted_method_mut<
+    'lua,
+    M: LuaUserDataMethods<'lua, Instance>,
+    A,
+    R,
+    F,
+>(
+    methods: &mut M,
+    class_name: &'static str,
+    method_name: &'static str,
+    method: F,
+) where
+    A: FromLuaMulti<'lua>,
+    R: IntoLuaMulti<'lua>,
+    F: 'static + Fn(&'lua Lua, &mut Instance, A) -> LuaResult<R>,
+{
+    methods.add_method_mut(method_name, move |lua, this, args| {
+        if class_is_a(this.get_class_name(), class_name).unwrap_or(false) {
+            method(lua, this, args)
+        } else {
+            Err(LuaError::RuntimeError(format!(
+                "{method_name} is not a valid member of {class_name}",
+            )))
+        }
+    });
+}
+
+/**
+    Gets or creates the instance child with the given reference prop name and class name.
+
+    Note that the class name here must be an exact match, it is not checked using `IsA`.
+
+    The instance may be in one of several states but this function will guarantee that the
+    property reference is correct and that the instance exists after it has been called:
+
+    1. Instance exists as property ref - just return it
+    2. Instance exists under workspace but not as a property ref - save it and return it
+    3. Instance does not exist - create it, save it, then return it
+*/
+pub(crate) fn get_or_create_property_ref_instance(
+    this: &Instance,
+    prop_name: &'static str,
+    class_name: &'static str,
+) -> LuaResult<Instance> {
+    if let Some(DomValue::Ref(inst_ref)) = this.get_property(prop_name) {
+        if let Some(inst) = Instance::new_opt(inst_ref) {
+            return Ok(inst);
+        }
+    }
+    if let Some(inst) = this.find_child(|child| child.class == class_name) {
+        this.set_property(prop_name, DomValue::Ref(inst.dom_ref));
+        Ok(inst)
+    } else {
+        let inst = Instance::new_orphaned(class_name);
+        inst.set_parent(Some(*this));
+        this.set_property(prop_name, DomValue::Ref(inst.dom_ref));
+        Ok(inst)
+    }
+}

crates/lune-roblox/src/shared/instance.rs

@@ -28,6 +28,13 @@ pub(crate) fn find_property_info(
     let instance_class = instance_class.as_ref();
     let property_name = property_name.as_ref();
 
+    // Attributes and tags are *technically* properties but we don't
+    // want to treat them as such when looking up property info, any
+    // reading or modification of these should always be explicit
+    if matches!(property_name, "Attributes" | "Tags") {
+        return None;
+    }
+
     // FUTURE: We can probably cache the result of calling this
     // function, if property access is being used in a tight loop
     // in a build step or something similar then it would be beneficial
@@ -53,12 +60,12 @@ pub(crate) fn find_property_info(
                     value_type: Some(*value_type),
                     ..Default::default()
                 },
-                _ => Default::default(),
+                _ => PropertyInfo::default(),
             });
             break;
         } else if let Some(sup) = &class.superclass {
             // No property found, we should look at the superclass
-            class_name = Cow::Borrowed(sup)
+            class_name = Cow::Borrowed(sup);
         } else {
             break;
         }
@@ -80,7 +87,7 @@ pub(crate) fn find_property_info(
                 break;
             } else if let Some(sup) = &class.superclass {
                 // No default value found, we should look at the superclass
-                class_name = Cow::Borrowed(sup)
+                class_name = Cow::Borrowed(sup);
             } else {
                 break;
             }

crates/lune-roblox/src/shared/userdata.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::missing_errors_doc)]
+
 use std::{any::type_name, cell::RefCell, fmt, ops};
 
 use mlua::prelude::*;
@@ -5,21 +7,29 @@ use mlua::prelude::*;
 // Utility functions
 
 type ListWriter = dyn Fn(&mut fmt::Formatter<'_>, bool, &str) -> fmt::Result;
+
+#[must_use]
 pub fn make_list_writer() -> Box<ListWriter> {
     let first = RefCell::new(true);
     Box::new(move |f, flag, literal| {
         if flag {
             if first.take() {
-                write!(f, "{}", literal)?;
+                write!(f, "{literal}")?;
             } else {
-                write!(f, ", {}", literal)?;
+                write!(f, ", {literal}")?;
             }
         }
         Ok::<_, fmt::Error>(())
     })
 }
 
-// Userdata metamethod implementations
+/*
+    Userdata metamethod implementations
+
+    Note that many of these return [`LuaResult`] even though they don't
+    return any errors - this is for consistency reasons and to make it
+    easier to add these blanket implementations to [`LuaUserData`] impls.
+*/
 
 pub fn userdata_impl_to_string<D>(_: &Lua, datatype: &D, _: ()) -> LuaResult<String>
 where
@@ -50,18 +60,18 @@ where
     Ok(-*datatype)
 }
 
-pub fn userdata_impl_add<D>(_: &Lua, datatype: &D, value: D) -> LuaResult<D>
+pub fn userdata_impl_add<D>(_: &Lua, datatype: &D, value: LuaUserDataRef<D>) -> LuaResult<D>
 where
     D: LuaUserData + ops::Add<Output = D> + Copy,
 {
-    Ok(*datatype + value)
+    Ok(*datatype + *value)
 }
 
-pub fn userdata_impl_sub<D>(_: &Lua, datatype: &D, value: D) -> LuaResult<D>
+pub fn userdata_impl_sub<D>(_: &Lua, datatype: &D, value: LuaUserDataRef<D>) -> LuaResult<D>
 where
     D: LuaUserData + ops::Sub<Output = D> + Copy,
 {
-    Ok(*datatype - value)
+    Ok(*datatype - *value)
 }
 
 pub fn userdata_impl_mul_f32<D>(_: &Lua, datatype: &D, rhs: LuaValue) -> LuaResult<D>
@@ -139,6 +149,37 @@ where
     })
 }
 
+pub trait IDiv<Rhs = Self> {
+    type Output;
+    #[must_use]
+    fn idiv(self, rhs: Rhs) -> Self::Output;
+}
+
+pub fn userdata_impl_idiv_f32<D>(_: &Lua, datatype: &D, rhs: LuaValue) -> LuaResult<D>
+where
+    D: LuaUserData + IDiv<D, Output = D> + IDiv<f32, Output = D> + Copy + 'static,
+{
+    match &rhs {
+        LuaValue::Number(n) => return Ok(datatype.idiv(*n as f32)),
+        LuaValue::Integer(i) => return Ok(datatype.idiv(*i as f32)),
+        LuaValue::UserData(ud) => {
+            if let Ok(vec) = ud.borrow::<D>() {
+                return Ok(datatype.idiv(*vec));
+            }
+        }
+        _ => {}
+    };
+    Err(LuaError::FromLuaConversionError {
+        from: rhs.type_name(),
+        to: type_name::<D>(),
+        message: Some(format!(
+            "Expected {} or number, got {}",
+            type_name::<D>(),
+            rhs.type_name()
+        )),
+    })
+}
+
 pub fn userdata_impl_div_i32<D>(_: &Lua, datatype: &D, rhs: LuaValue) -> LuaResult<D>
 where
     D: LuaUserData + ops::Div<D, Output = D> + ops::Div<i32, Output = D> + Copy + 'static,

crates/lune-std-datetime/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "lune-std-datetime"
+version = "0.1.3"
+edition = "2021"
+license = "MPL-2.0"
+repository = "https://github.com/lune-org/lune"
+description = "Lune standard library - DateTime"
+
+[lib]
+path = "src/lib.rs"
+
+[lints]
+workspace = true
+
+[dependencies]
+mlua = { version = "0.9.9", features = ["luau"] }
+
+thiserror = "1.0"
+chrono = "0.4.38"
+chrono_lc = "0.1.6"
+
+lune-utils = { version = "0.1.3", path = "../lune-utils" }

crates/lune-std-datetime/src/date_time.rs

@@ -0,0 +1,250 @@
+use std::cmp::Ordering;
+
+use mlua::prelude::*;
+
+use chrono::prelude::*;
+use chrono::DateTime as ChronoDateTime;
+use chrono_lc::LocaleDate;
+
+use crate::result::{DateTimeError, DateTimeResult};
+use crate::values::DateTimeValues;
+
+const DEFAULT_FORMAT: &str = "%Y-%m-%d %H:%M:%S";
+const DEFAULT_LOCALE: &str = "en";
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+pub struct DateTime {
+    // NOTE: We store this as the UTC time zone since it is the most commonly
+    // used and getting the generics right for TimeZone is somewhat tricky,
+    // but none of the method implementations below should rely on this tz
+    inner: ChronoDateTime<Utc>,
+}
+
+impl DateTime {
+    /**
+        Creates a new `DateTime` struct representing the current moment in time.
+
+        See [`chrono::DateTime::now`] for additional details.
+    */
+    #[must_use]
+    pub fn now() -> Self {
+        Self { inner: Utc::now() }
+    }
+
+    /**
+        Creates a new `DateTime` struct from the given `unix_timestamp`,
+        which is a float of seconds passed since the UNIX epoch.
+
+        This is somewhat unconventional, but fits our Luau interface and dynamic types quite well.
+        To use this method the same way you would use a more traditional `from_unix_timestamp`
+        that takes a `u64` of seconds or similar type, casting the value is sufficient:
+
+        ```rust ignore
+        DateTime::from_unix_timestamp_float(123456789u64 as f64)
+        ```
+
+        See [`chrono::DateTime::from_timestamp`] for additional details.
+
+        # Errors
+
+        Returns an error if the input value is out of range.
+    */
+    pub fn from_unix_timestamp_float(unix_timestamp: f64) -> DateTimeResult<Self> {
+        let whole = unix_timestamp.trunc() as i64;
+        let fract = unix_timestamp.fract();
+        let nanos = (fract * 1_000_000_000f64)
+            .round()
+            .clamp(u32::MIN as f64, u32::MAX as f64) as u32;
+        let inner = ChronoDateTime::<Utc>::from_timestamp(whole, nanos)
+            .ok_or(DateTimeError::OutOfRangeUnspecified)?;
+        Ok(Self { inner })
+    }
+
+    /**
+        Transforms individual date & time values into a new
+        `DateTime` struct, using the universal (UTC) time zone.
+
+        See [`chrono::NaiveDate::from_ymd_opt`] and [`chrono::NaiveTime::from_hms_milli_opt`]
+        for additional details and cases where this constructor may return an error.
+
+        # Errors
+
+        Returns an error if the date or time values are invalid.
+    */
+    pub fn from_universal_time(values: &DateTimeValues) -> DateTimeResult<Self> {
+        let date = NaiveDate::from_ymd_opt(values.year, values.month, values.day)
+            .ok_or(DateTimeError::InvalidDate)?;
+
+        let time = NaiveTime::from_hms_milli_opt(
+            values.hour,
+            values.minute,
+            values.second,
+            values.millisecond,
+        )
+        .ok_or(DateTimeError::InvalidTime)?;
+
+        let inner = Utc.from_utc_datetime(&NaiveDateTime::new(date, time));
+
+        Ok(Self { inner })
+    }
+
+    /**
+        Transforms individual date & time values into a new
+        `DateTime` struct, using the current local time zone.
+
+        See [`chrono::NaiveDate::from_ymd_opt`] and [`chrono::NaiveTime::from_hms_milli_opt`]
+        for additional details and cases where this constructor may return an error.
+
+        # Errors
+
+        Returns an error if the date or time values are invalid or ambiguous.
+    */
+    pub fn from_local_time(values: &DateTimeValues) -> DateTimeResult<Self> {
+        let date = NaiveDate::from_ymd_opt(values.year, values.month, values.day)
+            .ok_or(DateTimeError::InvalidDate)?;
+
+        let time = NaiveTime::from_hms_milli_opt(
+            values.hour,
+            values.minute,
+            values.second,
+            values.millisecond,
+        )
+        .ok_or(DateTimeError::InvalidTime)?;
+
+        let inner = Local
+            .from_local_datetime(&NaiveDateTime::new(date, time))
+            .single()
+            .ok_or(DateTimeError::Ambiguous)?
+            .with_timezone(&Utc);
+
+        Ok(Self { inner })
+    }
+
+    /**
+        Formats the `DateTime` using the universal (UTC) time
+        zone, the given format string, and the given locale.
+
+        `format` and `locale` default to `"%Y-%m-%d %H:%M:%S"` and `"en"` respectively.
+
+        See [`chrono_lc::DateTime::formatl`] for additional details.
+    */
+    #[must_use]
+    pub fn format_string_local(&self, format: Option<&str>, locale: Option<&str>) -> String {
+        self.inner
+            .with_timezone(&Local)
+            .formatl(
+                format.unwrap_or(DEFAULT_FORMAT),
+                locale.unwrap_or(DEFAULT_LOCALE),
+            )
+            .to_string()
+    }
+
+    /**
+        Formats the `DateTime` using the universal (UTC) time
+        zone, the given format string, and the given locale.
+
+        `format` and `locale` default to `"%Y-%m-%d %H:%M:%S"` and `"en"` respectively.
+
+        See [`chrono_lc::DateTime::formatl`] for additional details.
+    */
+    #[must_use]
+    pub fn format_string_universal(&self, format: Option<&str>, locale: Option<&str>) -> String {
+        self.inner
+            .with_timezone(&Utc)
+            .formatl(
+                format.unwrap_or(DEFAULT_FORMAT),
+                locale.unwrap_or(DEFAULT_LOCALE),
+            )
+            .to_string()
+    }
+
+    /**
+        Parses a time string in the ISO 8601 format, such as
+        `1996-12-19T16:39:57-08:00`, into a new `DateTime` struct.
+
+        See [`chrono::DateTime::parse_from_rfc3339`] for additional details.
+
+        # Errors
+
+        Returns an error if the input string is not a valid RFC 3339 date-time.
+    */
+    pub fn from_iso_date(iso_date: impl AsRef<str>) -> DateTimeResult<Self> {
+        let inner = ChronoDateTime::parse_from_rfc3339(iso_date.as_ref())?.with_timezone(&Utc);
+        Ok(Self { inner })
+    }
+
+    /**
+        Extracts individual date & time values from this
+        `DateTime`, using the current local time zone.
+    */
+    #[must_use]
+    pub fn to_local_time(self) -> DateTimeValues {
+        DateTimeValues::from(self.inner.with_timezone(&Local))
+    }
+
+    /**
+        Extracts individual date & time values from this
+        `DateTime`, using the universal (UTC) time zone.
+    */
+    #[must_use]
+    pub fn to_universal_time(self) -> DateTimeValues {
+        DateTimeValues::from(self.inner.with_timezone(&Utc))
+    }
+
+    /**
+        Formats a time string in the ISO 8601 format, such as `1996-12-19T16:39:57-08:00`.
+
+        See [`chrono::DateTime::to_rfc3339`] for additional details.
+    */
+    #[must_use]
+    pub fn to_iso_date(self) -> String {
+        self.inner.to_rfc3339()
+    }
+}
+
+impl LuaUserData for DateTime {
+    fn add_fields<'lua, F: LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+        fields.add_field_method_get("unixTimestamp", |_, this| Ok(this.inner.timestamp()));
+        fields.add_field_method_get("unixTimestampMillis", |_, this| {
+            Ok(this.inner.timestamp_millis())
+        });
+    }
+
+    fn add_methods<'lua, M: LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
+        // Metamethods to compare DateTime as instants in time
+        methods.add_meta_method(
+            LuaMetaMethod::Eq,
+            |_, this: &Self, other: LuaUserDataRef<Self>| Ok(this.eq(&other)),
+        );
+        methods.add_meta_method(
+            LuaMetaMethod::Lt,
+            |_, this: &Self, other: LuaUserDataRef<Self>| {
+                Ok(matches!(this.cmp(&other), Ordering::Less))
+            },
+        );
+        methods.add_meta_method(
+            LuaMetaMethod::Le,
+            |_, this: &Self, other: LuaUserDataRef<Self>| {
+                Ok(matches!(this.cmp(&other), Ordering::Less | Ordering::Equal))
+            },
+        );
+        // Normal methods
+        methods.add_method("toIsoDate", |_, this, ()| Ok(this.to_iso_date()));
+        methods.add_method(
+            "formatUniversalTime",
+            |_, this, (format, locale): (Option<String>, Option<String>)| {
+                Ok(this.format_string_universal(format.as_deref(), locale.as_deref()))
+            },
+        );
+        methods.add_method(
+            "formatLocalTime",
+            |_, this, (format, locale): (Option<String>, Option<String>)| {
+                Ok(this.format_string_local(format.as_deref(), locale.as_deref()))
+            },
+        );
+        methods.add_method("toUniversalTime", |_, this: &Self, ()| {
+            Ok(this.to_universal_time())
+        });
+        methods.add_method("toLocalTime", |_, this: &Self, ()| Ok(this.to_local_time()));
+    }
+}

crates/lune-std-datetime/src/lib.rs

@@ -0,0 +1,36 @@
+#![allow(clippy::cargo_common_metadata)]
+
+use mlua::prelude::*;
+
+use lune_utils::TableBuilder;
+
+mod date_time;
+mod result;
+mod values;
+
+pub use self::date_time::DateTime;
+
+/**
+    Creates the `datetime` standard library module.
+
+    # Errors
+
+    Errors when out of memory.
+*/
+pub fn module(lua: &Lua) -> LuaResult<LuaTable> {
+    TableBuilder::new(lua)?
+        .with_function("fromIsoDate", |_, iso_date: String| {
+            Ok(DateTime::from_iso_date(iso_date)?)
+        })?
+        .with_function("fromLocalTime", |_, values| {
+            Ok(DateTime::from_local_time(&values)?)
+        })?
+        .with_function("fromUniversalTime", |_, values| {
+            Ok(DateTime::from_universal_time(&values)?)
+        })?
+        .with_function("fromUnixTimestamp", |_, timestamp| {
+            Ok(DateTime::from_unix_timestamp_float(timestamp)?)
+        })?
+        .with_function("now", |_, ()| Ok(DateTime::now()))?
+        .build_readonly()
+}

crates/lune-std-datetime/src/result.rs

@@ -0,0 +1,32 @@
+use mlua::prelude::*;
+
+use thiserror::Error;
+
+pub type DateTimeResult<T, E = DateTimeError> = Result<T, E>;
+
+#[derive(Debug, Clone, Error)]
+pub enum DateTimeError {
+    #[error("invalid date")]
+    InvalidDate,
+    #[error("invalid time")]
+    InvalidTime,
+    #[error("ambiguous date or time")]
+    Ambiguous,
+    #[error("date or time is outside allowed range")]
+    OutOfRangeUnspecified,
+    #[error("{name} must be within range {min} -> {max}, got {value}")]
+    OutOfRange {
+        name: &'static str,
+        value: String,
+        min: String,
+        max: String,
+    },
+    #[error(transparent)]
+    ParseError(#[from] chrono::ParseError),
+}
+
+impl From<DateTimeError> for LuaError {
+    fn from(value: DateTimeError) -> Self {
+        LuaError::runtime(value.to_string())
+    }
+}

crates/lune-std-datetime/src/values.rs

@@ -0,0 +1,170 @@
+use mlua::prelude::*;
+
+use chrono::prelude::*;
+
+use lune_utils::TableBuilder;
+
+use super::result::{DateTimeError, DateTimeResult};
+
+#[derive(Debug, Clone, Copy)]
+pub struct DateTimeValues {
+    pub year: i32,
+    pub month: u32,
+    pub day: u32,
+    pub hour: u32,
+    pub minute: u32,
+    pub second: u32,
+    pub millisecond: u32,
+}
+
+impl DateTimeValues {
+    /**
+        Verifies that all of the date & time values are within allowed ranges:
+
+        | Name          | Range          |
+        |---------------|----------------|
+        | `year`        | `1400 -> 9999` |
+        | `month`       | `1 -> 12`      |
+        | `day`         | `1 -> 31`      |
+        | `hour`        | `0 -> 23`      |
+        | `minute`      | `0 -> 59`      |
+        | `second`      | `0 -> 60`      |
+        | `millisecond` | `0 -> 999`     |
+    */
+    pub fn verify(self) -> DateTimeResult<Self> {
+        verify_in_range("year", self.year, 1400, 9999)?;
+        verify_in_range("month", self.month, 1, 12)?;
+        verify_in_range("day", self.day, 1, 31)?;
+        verify_in_range("hour", self.hour, 0, 23)?;
+        verify_in_range("minute", self.minute, 0, 59)?;
+        verify_in_range("second", self.second, 0, 60)?;
+        verify_in_range("millisecond", self.millisecond, 0, 999)?;
+        Ok(self)
+    }
+}
+
+fn verify_in_range<T>(name: &'static str, value: T, min: T, max: T) -> DateTimeResult<T>
+where
+    T: PartialOrd + std::fmt::Display,
+{
+    assert!(max > min);
+    if value < min || value > max {
+        Err(DateTimeError::OutOfRange {
+            name,
+            min: min.to_string(),
+            max: max.to_string(),
+            value: value.to_string(),
+        })
+    } else {
+        Ok(value)
+    }
+}
+
+/*
+    Conversion methods between `DateTimeValues` and plain lua tables
+
+    Note that the `IntoLua` implementation here uses a read-only table,
+    since we generally want to convert into lua when we know we have
+    a fixed point in time, and we guarantee that it doesn't change
+*/
+
+impl FromLua<'_> for DateTimeValues {
+    fn from_lua(value: LuaValue, _: &Lua) -> LuaResult<Self> {
+        if !value.is_table() {
+            return Err(LuaError::FromLuaConversionError {
+                from: value.type_name(),
+                to: "DateTimeValues",
+                message: Some("value must be a table".to_string()),
+            });
+        };
+
+        let value = value.as_table().unwrap();
+        let values = Self {
+            year: value.get("year")?,
+            month: value.get("month")?,
+            day: value.get("day")?,
+            hour: value.get("hour")?,
+            minute: value.get("minute")?,
+            second: value.get("second")?,
+            millisecond: value.get("millisecond").unwrap_or(0),
+        };
+
+        match values.verify() {
+            Ok(dt) => Ok(dt),
+            Err(e) => Err(LuaError::FromLuaConversionError {
+                from: "table",
+                to: "DateTimeValues",
+                message: Some(e.to_string()),
+            }),
+        }
+    }
+}
+
+impl IntoLua<'_> for DateTimeValues {
+    fn into_lua(self, lua: &Lua) -> LuaResult<LuaValue> {
+        let tab = TableBuilder::new(lua)?
+            .with_value("year", self.year)?
+            .with_values(vec![
+                ("month", self.month),
+                ("day", self.day),
+                ("hour", self.hour),
+                ("minute", self.minute),
+                ("second", self.second),
+                ("millisecond", self.millisecond),
+            ])?
+            .build_readonly()?;
+        Ok(LuaValue::Table(tab))
+    }
+}
+
+/*
+    Conversion methods between chrono's timezone-aware `DateTime` to
+    and from our non-timezone-aware `DateTimeValues` values struct
+*/
+
+impl<T: TimeZone> From<DateTime<T>> for DateTimeValues {
+    fn from(value: DateTime<T>) -> Self {
+        Self {
+            year: value.year(),
+            month: value.month(),
+            day: value.day(),
+            hour: value.hour(),
+            minute: value.minute(),
+            second: value.second(),
+            millisecond: value.timestamp_subsec_millis(),
+        }
+    }
+}
+
+impl TryFrom<DateTimeValues> for DateTime<Utc> {
+    type Error = DateTimeError;
+    fn try_from(value: DateTimeValues) -> Result<Self, Self::Error> {
+        Utc.with_ymd_and_hms(
+            value.year,
+            value.month,
+            value.day,
+            value.hour,
+            value.minute,
+            value.second,
+        )
+        .single()
+        .ok_or(DateTimeError::Ambiguous)
+    }
+}
+
+impl TryFrom<DateTimeValues> for DateTime<Local> {
+    type Error = DateTimeError;
+    fn try_from(value: DateTimeValues) -> Result<Self, Self::Error> {
+        Local
+            .with_ymd_and_hms(
+                value.year,
+                value.month,
+                value.day,
+                value.hour,
+                value.minute,
+                value.second,
+            )
+            .single()
+            .ok_or(DateTimeError::Ambiguous)
+    }
+}

crates/lune-std-fs/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "lune-std-fs"
+version = "0.1.2"
+edition = "2021"
+license = "MPL-2.0"
+repository = "https://github.com/lune-org/lune"
+description = "Lune standard library - FS"
+
+[lib]
+path = "src/lib.rs"
+
+[lints]
+workspace = true
+
+[dependencies]
+mlua = { version = "0.9.9", features = ["luau"] }
+
+bstr = "1.9"
+
+tokio = { version = "1", default-features = false, features = ["fs"] }
+
+lune-utils = { version = "0.1.3", path = "../lune-utils" }
+lune-std-datetime = { version = "0.1.2", path = "../lune-std-datetime" }

crates/lune-std-fs/src/copy.rs

@@ -0,0 +1,166 @@
+use std::collections::VecDeque;
+use std::io::ErrorKind;
+use std::path::{Path, PathBuf};
+
+use mlua::prelude::*;
+use tokio::fs;
+
+use super::options::FsWriteOptions;
+
+pub struct CopyContents {
+    // Vec<(relative depth, path)>
+    pub dirs: Vec<(usize, PathBuf)>,
+    pub files: Vec<(usize, PathBuf)>,
+}
+
+async fn get_contents_at(root: PathBuf, _: FsWriteOptions) -> LuaResult<CopyContents> {
+    let mut dirs = Vec::new();
+    let mut files = Vec::new();
+
+    let mut queue = VecDeque::new();
+
+    let normalized_root = fs::canonicalize(&root).await.map_err(|e| {
+        LuaError::RuntimeError(format!("Failed to canonicalize root directory path\n{e}"))
+    })?;
+
+    // Push initial children of the root path into the queue
+    let mut entries = fs::read_dir(&normalized_root).await?;
+    while let Some(entry) = entries.next_entry().await? {
+        queue.push_back((1, entry.path()));
+    }
+
+    // Go through the current queue, pushing to it
+    // when we find any new descendant directories
+    // FUTURE: Try to do async reading here concurrently to speed it up a bit
+    while let Some((current_depth, current_path)) = queue.pop_front() {
+        let meta = fs::metadata(&current_path).await?;
+        if meta.is_symlink() {
+            return Err(LuaError::RuntimeError(format!(
+                "Symlinks are not yet supported, encountered at path '{}'",
+                current_path.display()
+            )));
+        } else if meta.is_dir() {
+            // FUTURE: Add an option in FsWriteOptions for max depth and limit it here
+            let mut entries = fs::read_dir(&current_path).await?;
+            while let Some(entry) = entries.next_entry().await? {
+                queue.push_back((current_depth + 1, entry.path()));
+            }
+            dirs.push((current_depth, current_path));
+        } else {
+            files.push((current_depth, current_path));
+        }
+    }
+
+    // Ensure that all directory and file paths are relative to the root path
+    // SAFETY: Since we only ever push dirs and files relative to the root, unwrap is safe
+    for (_, dir) in &mut dirs {
+        *dir = dir.strip_prefix(&normalized_root).unwrap().to_path_buf();
+    }
+    for (_, file) in &mut files {
+        *file = file.strip_prefix(&normalized_root).unwrap().to_path_buf();
+    }
+
+    // FUTURE: Deduplicate paths such that these directories:
+    // - foo/
+    // - foo/bar/
+    // - foo/bar/baz/
+    // turn into a single foo/bar/baz/ and let create_dir_all do the heavy lifting
+
+    Ok(CopyContents { dirs, files })
+}
+
+async fn ensure_no_dir_exists(path: impl AsRef<Path>) -> LuaResult<()> {
+    let path = path.as_ref();
+    match fs::metadata(&path).await {
+        Ok(meta) if meta.is_dir() => Err(LuaError::RuntimeError(format!(
+            "A directory already exists at the path '{}'",
+            path.display()
+        ))),
+        _ => Ok(()),
+    }
+}
+
+async fn ensure_no_file_exists(path: impl AsRef<Path>) -> LuaResult<()> {
+    let path = path.as_ref();
+    match fs::metadata(&path).await {
+        Ok(meta) if meta.is_file() => Err(LuaError::RuntimeError(format!(
+            "A file already exists at the path '{}'",
+            path.display()
+        ))),
+        _ => Ok(()),
+    }
+}
+
+pub async fn copy(
+    source: impl AsRef<Path>,
+    target: impl AsRef<Path>,
+    options: FsWriteOptions,
+) -> LuaResult<()> {
+    let source = source.as_ref();
+    let target = target.as_ref();
+
+    // Check if we got a file or directory - we will handle them differently below
+    let (is_dir, is_file) = match fs::metadata(&source).await {
+        Ok(meta) => (meta.is_dir(), meta.is_file()),
+        Err(e) if e.kind() == ErrorKind::NotFound => {
+            return Err(LuaError::RuntimeError(format!(
+                "No file or directory exists at the path '{}'",
+                source.display()
+            )))
+        }
+        Err(e) => return Err(e.into()),
+    };
+    if !is_file && !is_dir {
+        return Err(LuaError::RuntimeError(format!(
+            "The given path '{}' is not a file or a directory",
+            source.display()
+        )));
+    }
+
+    // Perform copying:
+    //
+    // 1. If we are not allowed to overwrite, make sure nothing exists at the target path
+    // 2. If we are allowed to overwrite, remove any previous entry at the path
+    // 3. Write all directories first
+    // 4. Write all files
+
+    if !options.overwrite {
+        if is_file {
+            ensure_no_file_exists(target).await?;
+        } else if is_dir {
+            ensure_no_dir_exists(target).await?;
+        }
+    }
+
+    if is_file {
+        fs::copy(source, target).await?;
+    } else if is_dir {
+        let contents = get_contents_at(source.to_path_buf(), options).await?;
+
+        if options.overwrite {
+            let (is_dir, is_file) = match fs::metadata(&target).await {
+                Ok(meta) => (meta.is_dir(), meta.is_file()),
+                Err(e) if e.kind() == ErrorKind::NotFound => (false, false),
+                Err(e) => return Err(e.into()),
+            };
+            if is_dir {
+                fs::remove_dir_all(target).await?;
+            } else if is_file {
+                fs::remove_file(target).await?;
+            }
+        }
+
+        fs::create_dir_all(target).await?;
+
+        // FUTURE: Write dirs / files concurrently
+        // to potentially speed these operations up
+        for (_, dir) in &contents.dirs {
+            fs::create_dir_all(target.join(dir)).await?;
+        }
+        for (_, file) in &contents.files {
+            fs::copy(source.join(file), target.join(file)).await?;
+        }
+    }
+
+    Ok(())
+}

crates/lune-std-fs/src/lib.rs

@@ -0,0 +1,126 @@
+#![allow(clippy::cargo_common_metadata)]
+
+use std::io::ErrorKind as IoErrorKind;
+use std::path::PathBuf;
+
+use bstr::{BString, ByteSlice};
+use mlua::prelude::*;
+use tokio::fs;
+
+use lune_utils::TableBuilder;
+
+mod copy;
+mod metadata;
+mod options;
+
+use self::copy::copy;
+use self::metadata::FsMetadata;
+use self::options::FsWriteOptions;
+
+/**
+    Creates the `fs` standard library module.
+
+    # Errors
+
+    Errors when out of memory.
+*/
+pub fn module(lua: &Lua) -> LuaResult<LuaTable> {
+    TableBuilder::new(lua)?
+        .with_async_function("readFile", fs_read_file)?
+        .with_async_function("readDir", fs_read_dir)?
+        .with_async_function("writeFile", fs_write_file)?
+        .with_async_function("writeDir", fs_write_dir)?
+        .with_async_function("removeFile", fs_remove_file)?
+        .with_async_function("removeDir", fs_remove_dir)?
+        .with_async_function("metadata", fs_metadata)?
+        .with_async_function("isFile", fs_is_file)?
+        .with_async_function("isDir", fs_is_dir)?
+        .with_async_function("move", fs_move)?
+        .with_async_function("copy", fs_copy)?
+        .build_readonly()
+}
+
+async fn fs_read_file(lua: &Lua, path: String) -> LuaResult<LuaString> {
+    let bytes = fs::read(&path).await.into_lua_err()?;
+
+    lua.create_string(bytes)
+}
+
+async fn fs_read_dir(_: &Lua, path: String) -> LuaResult<Vec<String>> {
+    let mut dir_strings = Vec::new();
+    let mut dir = fs::read_dir(&path).await.into_lua_err()?;
+    while let Some(dir_entry) = dir.next_entry().await.into_lua_err()? {
+        if let Some(dir_name_str) = dir_entry.file_name().to_str() {
+            dir_strings.push(dir_name_str.to_owned());
+        } else {
+            return Err(LuaError::RuntimeError(format!(
+                "File name could not be converted into a string: '{}'",
+                dir_entry.file_name().to_string_lossy()
+            )));
+        }
+    }
+    Ok(dir_strings)
+}
+
+async fn fs_write_file(_: &Lua, (path, contents): (String, BString)) -> LuaResult<()> {
+    fs::write(&path, contents.as_bytes()).await.into_lua_err()
+}
+
+async fn fs_write_dir(_: &Lua, path: String) -> LuaResult<()> {
+    fs::create_dir_all(&path).await.into_lua_err()
+}
+
+async fn fs_remove_file(_: &Lua, path: String) -> LuaResult<()> {
+    fs::remove_file(&path).await.into_lua_err()
+}
+
+async fn fs_remove_dir(_: &Lua, path: String) -> LuaResult<()> {
+    fs::remove_dir_all(&path).await.into_lua_err()
+}
+
+async fn fs_metadata(_: &Lua, path: String) -> LuaResult<FsMetadata> {
+    match fs::metadata(path).await {
+        Err(e) if e.kind() == IoErrorKind::NotFound => Ok(FsMetadata::not_found()),
+        Ok(meta) => Ok(FsMetadata::from(meta)),
+        Err(e) => Err(e.into()),
+    }
+}
+
+async fn fs_is_file(_: &Lua, path: String) -> LuaResult<bool> {
+    match fs::metadata(path).await {
+        Err(e) if e.kind() == IoErrorKind::NotFound => Ok(false),
+        Ok(meta) => Ok(meta.is_file()),
+        Err(e) => Err(e.into()),
+    }
+}
+
+async fn fs_is_dir(_: &Lua, path: String) -> LuaResult<bool> {
+    match fs::metadata(path).await {
+        Err(e) if e.kind() == IoErrorKind::NotFound => Ok(false),
+        Ok(meta) => Ok(meta.is_dir()),
+        Err(e) => Err(e.into()),
+    }
+}
+
+async fn fs_move(_: &Lua, (from, to, options): (String, String, FsWriteOptions)) -> LuaResult<()> {
+    let path_from = PathBuf::from(from);
+    if !path_from.exists() {
+        return Err(LuaError::RuntimeError(format!(
+            "No file or directory exists at the path '{}'",
+            path_from.display()
+        )));
+    }
+    let path_to = PathBuf::from(to);
+    if !options.overwrite && path_to.exists() {
+        return Err(LuaError::RuntimeError(format!(
+            "A file or directory already exists at the path '{}'",
+            path_to.display()
+        )));
+    }
+    fs::rename(path_from, path_to).await.into_lua_err()?;
+    Ok(())
+}
+
+async fn fs_copy(_: &Lua, (from, to, options): (String, String, FsWriteOptions)) -> LuaResult<()> {
+    copy(from, to, options).await
+}