luau/Ast/src/Cst.cpp
menarulalam a8d14596e7
Sync to upstream/release/669 (#1770)
We have lots of new changes for you! 

# What's Changed
## General

- We updated Luau's license year to 2025! 
- We fixed a bug where large amounts of errors were being printed when
deep intersections of unions error.


## Require-by-String
This release introduces the `Luau.Require` library, which exposes the
runtime semantics of require-by-string, including support for the new
`@self` alias described in [this
RFC](https://github.com/luau-lang/rfcs/pull/109).

The library operates on a virtualized filesystem, allowing consumers to
specify navigation rules without assuming a filesystem context.
Documentation in `Require.h` explains how to enable the library, and the
`setupState` function in Repl.cpp demonstrates how we've integrated it
into the luau CLI tool. Note that the interface in `Require.h` is
written in C, which enables any application written in a language with a
C foreign-function interface to link against this library and enable
require-by-string. This makes it straightforward for any application
embedding Luau to support require-by-string, provided that it defines or
operates within an environment resembling a virtual filesystem.

The core navigation semantics of require-by-string have additionally
been pulled into the `Luau.RequireNavigator` library. While
`Luau.Require` internally depends on `Luau.RequireNavigator`, the latter
does not depend on the Luau VM. This library provides an interface for
inspecting require-by-string's navigation behavior and therefore serves
as a useful dependency for static tooling. Documentation for
`Luau.RequireNavigator` is available in `RequireNavigator.h`.
## Autocomplete
- We fixed a memory leak in fragment autocomplete!
## New Solver And Old Solver
- We've found a infinite iteration error over a type pack. We added a
way to detect this error and throw an `InternalCompileError` instead.
- We fix `table.freeze` not accounting for the first argument not
getting type stated. We fall back to regular inference instead.
- We fix a crash in the old solver with `length_error`.
- We fix a crash in the new solver stemming from generalization
reentrancy. Now we correctly generalize interior free types that do not
appear in a function signature.
- We fix a nil refinement. (Fixes
https://github.com/luau-lang/luau/issues/1687 and
https://github.com/luau-lang/luau/issues/1451)



### Internal Contributors
Co-authored-by: Andy Friesen <afriesen@roblox.com>
Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com>
Co-authored-by: Talha Pathan <tpathan@roblox.com>
Co-authored-by: Varun Saini <vsaini@roblox.com>
Co-authored-by: Vighnesh Vijay <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>

Full Changelog: https://github.com/luau-lang/luau/compare/0.668...0.669

---------

Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com>
Co-authored-by: Varun Saini <61795485+vrn-sn@users.noreply.github.com>
Co-authored-by: Alexander Youngblood <ayoungblood@roblox.com>
Co-authored-by: Aviral Goel <agoel@roblox.com>
Co-authored-by: Vighnesh <vvijay@roblox.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
Co-authored-by: Ariel Weiss <aaronweiss@roblox.com>
2025-04-11 17:44:21 -07:00

269 lines
7.8 KiB
C++

// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
#include "Luau/Ast.h"
#include "Luau/Cst.h"
#include "Luau/Common.h"
namespace Luau
{
int gCstRttiIndex = 0;
CstExprConstantNumber::CstExprConstantNumber(const AstArray<char>& value)
: CstNode(CstClassIndex())
, value(value)
{
}
CstExprConstantString::CstExprConstantString(AstArray<char> sourceString, QuoteStyle quoteStyle, unsigned int blockDepth)
: CstNode(CstClassIndex())
, sourceString(sourceString)
, quoteStyle(quoteStyle)
, blockDepth(blockDepth)
{
LUAU_ASSERT(blockDepth == 0 || quoteStyle == QuoteStyle::QuotedRaw);
}
CstExprCall::CstExprCall(std::optional<Position> openParens, std::optional<Position> closeParens, AstArray<Position> commaPositions)
: CstNode(CstClassIndex())
, openParens(openParens)
, closeParens(closeParens)
, commaPositions(commaPositions)
{
}
CstExprIndexExpr::CstExprIndexExpr(Position openBracketPosition, Position closeBracketPosition)
: CstNode(CstClassIndex())
, openBracketPosition(openBracketPosition)
, closeBracketPosition(closeBracketPosition)
{
}
CstExprFunction::CstExprFunction()
: CstNode(CstClassIndex())
{
}
CstExprTable::CstExprTable(const AstArray<Item>& items)
: CstNode(CstClassIndex())
, items(items)
{
}
CstExprOp::CstExprOp(Position opPosition)
: CstNode(CstClassIndex())
, opPosition(opPosition)
{
}
CstExprTypeAssertion::CstExprTypeAssertion(Position opPosition)
: CstNode(CstClassIndex())
, opPosition(opPosition)
{
}
CstExprIfElse::CstExprIfElse(Position thenPosition, Position elsePosition, bool isElseIf)
: CstNode(CstClassIndex())
, thenPosition(thenPosition)
, elsePosition(elsePosition)
, isElseIf(isElseIf)
{
}
CstExprInterpString::CstExprInterpString(AstArray<AstArray<char>> sourceStrings, AstArray<Position> stringPositions)
: CstNode(CstClassIndex())
, sourceStrings(sourceStrings)
, stringPositions(stringPositions)
{
}
CstStatDo::CstStatDo(Position endPosition)
: CstNode(CstClassIndex())
, endPosition(endPosition)
{
}
CstStatRepeat::CstStatRepeat(Position untilPosition)
: CstNode(CstClassIndex())
, untilPosition(untilPosition)
{
}
CstStatReturn::CstStatReturn(AstArray<Position> commaPositions)
: CstNode(CstClassIndex())
, commaPositions(commaPositions)
{
}
CstStatLocal::CstStatLocal(AstArray<Position> varsCommaPositions, AstArray<Position> valuesCommaPositions)
: CstNode(CstClassIndex())
, varsCommaPositions(varsCommaPositions)
, valuesCommaPositions(valuesCommaPositions)
{
}
CstStatFor::CstStatFor(Position equalsPosition, Position endCommaPosition, std::optional<Position> stepCommaPosition)
: CstNode(CstClassIndex())
, equalsPosition(equalsPosition)
, endCommaPosition(endCommaPosition)
, stepCommaPosition(stepCommaPosition)
{
}
CstStatForIn::CstStatForIn(AstArray<Position> varsCommaPositions, AstArray<Position> valuesCommaPositions)
: CstNode(CstClassIndex())
, varsCommaPositions(varsCommaPositions)
, valuesCommaPositions(valuesCommaPositions)
{
}
CstStatAssign::CstStatAssign(AstArray<Position> varsCommaPositions, Position equalsPosition, AstArray<Position> valuesCommaPositions)
: CstNode(CstClassIndex())
, varsCommaPositions(varsCommaPositions)
, equalsPosition(equalsPosition)
, valuesCommaPositions(valuesCommaPositions)
{
}
CstStatCompoundAssign::CstStatCompoundAssign(Position opPosition)
: CstNode(CstClassIndex())
, opPosition(opPosition)
{
}
CstStatFunction::CstStatFunction(Position functionKeywordPosition)
: CstNode(CstClassIndex())
, functionKeywordPosition(functionKeywordPosition)
{
}
CstStatLocalFunction::CstStatLocalFunction(Position localKeywordPosition, Position functionKeywordPosition)
: CstNode(CstClassIndex())
, localKeywordPosition(localKeywordPosition)
, functionKeywordPosition(functionKeywordPosition)
{
}
CstGenericType::CstGenericType(std::optional<Position> defaultEqualsPosition)
: CstNode(CstClassIndex())
, defaultEqualsPosition(defaultEqualsPosition)
{
}
CstGenericTypePack::CstGenericTypePack(Position ellipsisPosition, std::optional<Position> defaultEqualsPosition)
: CstNode(CstClassIndex())
, ellipsisPosition(ellipsisPosition)
, defaultEqualsPosition(defaultEqualsPosition)
{
}
CstStatTypeAlias::CstStatTypeAlias(
Position typeKeywordPosition,
Position genericsOpenPosition,
AstArray<Position> genericsCommaPositions,
Position genericsClosePosition,
Position equalsPosition
)
: CstNode(CstClassIndex())
, typeKeywordPosition(typeKeywordPosition)
, genericsOpenPosition(genericsOpenPosition)
, genericsCommaPositions(genericsCommaPositions)
, genericsClosePosition(genericsClosePosition)
, equalsPosition(equalsPosition)
{
}
CstStatTypeFunction::CstStatTypeFunction(Position typeKeywordPosition, Position functionKeywordPosition)
: CstNode(CstClassIndex())
, typeKeywordPosition(typeKeywordPosition)
, functionKeywordPosition(functionKeywordPosition)
{
}
CstTypeReference::CstTypeReference(
std::optional<Position> prefixPointPosition,
Position openParametersPosition,
AstArray<Position> parametersCommaPositions,
Position closeParametersPosition
)
: CstNode(CstClassIndex())
, prefixPointPosition(prefixPointPosition)
, openParametersPosition(openParametersPosition)
, parametersCommaPositions(parametersCommaPositions)
, closeParametersPosition(closeParametersPosition)
{
}
CstTypeTable::CstTypeTable(AstArray<Item> items, bool isArray)
: CstNode(CstClassIndex())
, items(items)
, isArray(isArray)
{
}
CstTypeFunction::CstTypeFunction(
Position openGenericsPosition,
AstArray<Position> genericsCommaPositions,
Position closeGenericsPosition,
Position openArgsPosition,
AstArray<std::optional<Position>> argumentNameColonPositions,
AstArray<Position> argumentsCommaPositions,
Position closeArgsPosition,
Position returnArrowPosition
)
: CstNode(CstClassIndex())
, openGenericsPosition(openGenericsPosition)
, genericsCommaPositions(genericsCommaPositions)
, closeGenericsPosition(closeGenericsPosition)
, openArgsPosition(openArgsPosition)
, argumentNameColonPositions(argumentNameColonPositions)
, argumentsCommaPositions(argumentsCommaPositions)
, closeArgsPosition(closeArgsPosition)
, returnArrowPosition(returnArrowPosition)
{
}
CstTypeTypeof::CstTypeTypeof(Position openPosition, Position closePosition)
: CstNode(CstClassIndex())
, openPosition(openPosition)
, closePosition(closePosition)
{
}
CstTypeUnion::CstTypeUnion(std::optional<Position> leadingPosition, AstArray<Position> separatorPositions)
: CstNode(CstClassIndex())
, leadingPosition(leadingPosition)
, separatorPositions(separatorPositions)
{
}
CstTypeIntersection::CstTypeIntersection(std::optional<Position> leadingPosition, AstArray<Position> separatorPositions)
: CstNode(CstClassIndex())
, leadingPosition(leadingPosition)
, separatorPositions(separatorPositions)
{
}
CstTypeSingletonString::CstTypeSingletonString(AstArray<char> sourceString, CstExprConstantString::QuoteStyle quoteStyle, unsigned int blockDepth)
: CstNode(CstClassIndex())
, sourceString(sourceString)
, quoteStyle(quoteStyle)
, blockDepth(blockDepth)
{
LUAU_ASSERT(quoteStyle != CstExprConstantString::QuotedInterp);
}
CstTypePackExplicit::CstTypePackExplicit(Position openParenthesesPosition, Position closeParenthesesPosition, AstArray<Position> commaPositions)
: CstNode(CstClassIndex())
, openParenthesesPosition(openParenthesesPosition)
, closeParenthesesPosition(closeParenthesesPosition)
, commaPositions(commaPositions)
{
}
CstTypePackGeneric::CstTypePackGeneric(Position ellipsisPosition)
: CstNode(CstClassIndex())
, ellipsisPosition(ellipsisPosition)
{
}
} // namespace Luau