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8fe64db609
# What's Changed? We've been hard at work fixing bugs and introducing new features! ## VM * Include constant-folding information in Luau cost model for inlining and loop unrolling * ~1% improvement in compile times ## New Type Solver * `Luau::shallowClone`'s last argument, whether to clone persistent (builtin) types, is now non-optional. * Refinements on properties of tables are now computed with a `read` table property. This resolves some issues around refining table properies and then trying to set them. Fixes #1344. Fixes #1651. ``` if foo.bar then -- Prior to this release, this would be `typeof(foo) & { bar: ~(false?) } -- Now, this is `typeof(foo) & { read bar: ~(false?) } end ``` * The type function `keyof` should respect the empty string as a property, as in: ``` -- equivalent to type Foo ="" type Foo = keyof<{ [""]: number }> ``` * Descend into literals to report subtyping errors for function calls: this both improves bidirectional inference and makes errors more specific. Before, the error reporting for a table with incorrect members passed to a function would cite the entire table, but now it only cites the members that are incorrectly typed. * Fixes a case where intersecting two tables without any common properties would create `never`, instead of a table with both of their properties. # Internal Contributors Co-authored-by: Ariel Weiss <aaronweiss@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: James McNellis <jmcnellis@roblox.com> Co-authored-by: Sora Kanosue <skanosue@roblox.com> Co-authored-by: Talha Pathan <tpathan@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> --------- 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> Co-authored-by: Andy Friesen <afriesen@roblox.com>
89 lines
1.7 KiB
C++
89 lines
1.7 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/Common.h"
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#include "Luau/Location.h"
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#include "Luau/Lexer.h"
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#include "Luau/StringUtils.h"
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namespace Luau
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{
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class AstStatBlock;
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class CstNode;
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class ParseError : public std::exception
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{
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public:
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ParseError(const Location& location, std::string message);
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virtual const char* what() const throw();
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const Location& getLocation() const;
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const std::string& getMessage() const;
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static LUAU_NORETURN void raise(const Location& location, const char* format, ...) LUAU_PRINTF_ATTR(2, 3);
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private:
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Location location;
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std::string message;
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};
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class ParseErrors : public std::exception
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{
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public:
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ParseErrors(std::vector<ParseError> errors);
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virtual const char* what() const throw();
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const std::vector<ParseError>& getErrors() const;
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private:
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std::vector<ParseError> errors;
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std::string message;
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};
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struct HotComment
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{
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bool header;
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Location location;
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std::string content;
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};
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struct Comment
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{
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Lexeme::Type type; // Comment, BlockComment, or BrokenComment
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Location location;
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};
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using CstNodeMap = DenseHashMap<AstNode*, CstNode*>;
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struct ParseResult
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{
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AstStatBlock* root;
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size_t lines = 0;
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std::vector<HotComment> hotcomments;
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std::vector<ParseError> errors;
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std::vector<Comment> commentLocations;
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CstNodeMap cstNodeMap{nullptr};
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};
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struct ParseExprResult
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{
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AstExpr* expr;
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size_t lines = 0;
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std::vector<HotComment> hotcomments;
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std::vector<ParseError> errors;
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std::vector<Comment> commentLocations;
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CstNodeMap cstNodeMap{nullptr};
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};
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inline constexpr const char* kParseNameError = "%error-id%";
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} // namespace Luau
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