mirror of
https://github.com/luau-lang/luau.git
synced 2024-11-15 14:25:44 +08:00
140e5a1495
* Fixed incorrect lexeme generated for string parts in the middle of an interpolated string (Fixes https://github.com/Roblox/luau/issues/744) * DeprecatedApi lint can report some issues without type inference information * Fixed performance of autocomplete requests when suggestions have large intersection types (Solves https://github.com/Roblox/luau/discussions/847) * Marked `table.getn`/`foreach`/`foreachi` as deprecated ([RFC: Deprecate table.getn/foreach/foreachi](https://github.com/Roblox/luau/blob/master/rfcs/deprecate-table-getn-foreach.md)) * With -O2 optimization level, we now optimize builtin calls based on known argument/return count. Note that this change can be observable if `getfenv/setfenv` is used to substitute a builtin, especially if arity is different. Fastcall heavy tests show a 1-2% improvement. * Luau can now be built with clang-cl (Fixes https://github.com/Roblox/luau/issues/736) We also made many improvements to our experimental components. For our new type solver: * Overhauled data flow analysis system, fixed issues with 'repeat' loops, global variables and type annotations * Type refinements now work on generic table indexing with a string literal * Type refinements will properly track potentially 'nil' values (like t[x] for a missing key) and their further refinements * Internal top table type is now isomorphic to `{}` which fixes issues when `typeof(v) == 'table'` type refinement is handled * References to non-existent types in type annotations no longer resolve to 'error' type like in old solver * Improved handling of class unions in property access expressions * Fixed default type packs * Unsealed tables can now have metatables * Restored expected types for function arguments And for native code generation: * Added min and max IR instructions mapping to vminsd/vmaxsd on x64 * We now speculatively extract direct execution fast-paths based on expected types of expressions which provides better optimization opportunities inside a single basic block * Translated existing math fastcalls to IR form to improve tag guard removal and constant propagation
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
|
|
#pragma once
|
|
|
|
#include "Luau/Def.h"
|
|
#include "Luau/NotNull.h"
|
|
#include "Luau/Variant.h"
|
|
|
|
#include <string>
|
|
#include <optional>
|
|
|
|
namespace Luau
|
|
{
|
|
|
|
using NullableBreadcrumbId = const struct Breadcrumb*;
|
|
using BreadcrumbId = NotNull<const struct Breadcrumb>;
|
|
|
|
struct FieldMetadata
|
|
{
|
|
std::string prop;
|
|
};
|
|
|
|
struct SubscriptMetadata
|
|
{
|
|
BreadcrumbId key;
|
|
};
|
|
|
|
using Metadata = Variant<FieldMetadata, SubscriptMetadata>;
|
|
|
|
struct Breadcrumb
|
|
{
|
|
NullableBreadcrumbId previous;
|
|
DefId def;
|
|
std::optional<Metadata> metadata;
|
|
std::vector<BreadcrumbId> children;
|
|
};
|
|
|
|
inline Breadcrumb* asMutable(NullableBreadcrumbId breadcrumb)
|
|
{
|
|
LUAU_ASSERT(breadcrumb);
|
|
return const_cast<Breadcrumb*>(breadcrumb);
|
|
}
|
|
|
|
template<typename T>
|
|
const T* getMetadata(NullableBreadcrumbId breadcrumb)
|
|
{
|
|
if (!breadcrumb || !breadcrumb->metadata)
|
|
return nullptr;
|
|
|
|
return get_if<T>(&*breadcrumb->metadata);
|
|
}
|
|
|
|
struct BreadcrumbArena
|
|
{
|
|
TypedAllocator<Breadcrumb> allocator;
|
|
|
|
template<typename... Args>
|
|
BreadcrumbId add(NullableBreadcrumbId previous, DefId def, Args&&... args)
|
|
{
|
|
Breadcrumb* bc = allocator.allocate(Breadcrumb{previous, def, std::forward<Args>(args)...});
|
|
if (previous)
|
|
asMutable(previous)->children.push_back(NotNull{bc});
|
|
return NotNull{bc};
|
|
}
|
|
|
|
template<typename T, typename... Args>
|
|
BreadcrumbId emplace(NullableBreadcrumbId previous, DefId def, Args&&... args)
|
|
{
|
|
Breadcrumb* bc = allocator.allocate(Breadcrumb{previous, def, Metadata{T{std::forward<Args>(args)...}}});
|
|
if (previous)
|
|
asMutable(previous)->children.push_back(NotNull{bc});
|
|
return NotNull{bc};
|
|
}
|
|
};
|
|
|
|
} // namespace Luau
|