luau/VM/src/ludata.h

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
// This code is based on Lua 5.x implementation licensed under MIT License; see lua_LICENSE.txt for details
#pragma once

#include "lobject.h"

/* special tag value is used for user data with inline dtors */
#define UTAG_IDTOR LUA_UTAG_LIMIT

#define sizeudata(len) (offsetof(Udata, data) + len)

LUAI_FUNC Udata* luaU_newudata(lua_State* L, size_t s, int tag);
LUAI_FUNC void luaU_freeudata(lua_State* L, Udata* u, struct lua_Page* page);
Sync to upstream/release/507-pre (#286) This doesn't contain all changes for 507 yet but we might want to do the Luau 0.507 release a bit earlier to end the year sooner. Changes: - Type ascription (::) now permits casts between related types in both directions, allowing to refine or loosen the type (RFC #56) - Fix type definition for tonumber to return number? since the input string isn't guaranteed to contain a valid number - Fix type refinements for field access via [] - Many stability fixes for type checker - Provide extra information in error messages for type mismatches in more cases - Improve performance of type checking for large unions when union members are string literals - Add coverage reporting support to Repl (--coverage command line argument) and lua_getcoverage C API - Work around code signing issues during Makefile builds on macOS - Improve performance of truthiness checks in some cases, particularly on Apple M1, resulting in 10-25% perf gains on qsort benchmark depending on the CPU/compiler - Fix support for little-endian systems; IBM s390x here we go! 2021-12-10 22:05:05 +00:00			`// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details`
			`// This code is based on Lua 5.x implementation licensed under MIT License; see lua_LICENSE.txt for details`
			`#pragma once`

			`#include "lobject.h"`

			`/* special tag value is used for user data with inline dtors */`
			`#define UTAG_IDTOR LUA_UTAG_LIMIT`

			`#define sizeudata(len) (offsetof(Udata, data) + len)`

			`LUAI_FUNC Udata* luaU_newudata(lua_State* L, size_t s, int tag);`
Sync to upstream/release/511 (#324) - TableOperations lint now includes a warning for table.create(N, {}) (which is likely a mistake since the table is shared by all entries) - Type checker now type checks #v when v is a union - Parser now rejects sources that consists of a single unfinished long comment - Work around significant MSVC 2022 performance regression, bringing it more or less in line with MSVC 2019 - Compiler now predicts array size for newly allocated tables when the table is filled in a short loop - Small improvements in compilation throughput (~2% faster) - Implement paged sweeper for GC which improves sweep throughput 2-3x and reduces memory consumption by 8 bytes per object (once it is stabilized we will see additional 8 bytes per object of savings) - Improve Repl Tab completion - Repl now supports -i (interactive mode to run code in context of a script's environment) and -On (to control optimization flags) 2022-01-21 17:00:19 +00:00			`LUAI_FUNC void luaU_freeudata(lua_State* L, Udata* u, struct lua_Page* page);`