luau/Analysis/include/Luau/Symbol.h
vegorov-rbx 76f67e0733
Sync to upstream/release/588 (#992)
Type checker/autocomplete:
* `Luau::autocomplete` no longer performs typechecking internally, make
sure to run `Frontend::check` before performing autocomplete requests
* Autocomplete string suggestions without "" are now only suggested
inside the ""
* Autocomplete suggestions now include `function (anonymous autofilled)`
key with a full suggestion for the function expression (with arguments
included) stored in `AutocompleteEntry::insertText`
* `AutocompleteEntry::indexedWithSelf` is provided for function call
suggestions made with `:`
* Cyclic modules now see each other type exports as `any` to prevent
memory use-after-free (similar to module return type)

Runtime:
* Updated inline/loop unroll cost model to better handle assignments
(Fixes https://github.com/Roblox/luau/issues/978)
* `math.noise` speed was improved by ~30%
* `table.concat` speed was improved by ~5-7%
* `tonumber` and `tostring` now have fastcall paths that execute ~1.5x
and ~2.5x faster respectively (fixes #777)
* Fixed crash in `luaL_typename` when index refers to a non-existing
value
* Fixed potential out of memory scenario when using `string.sub` or
`string.char` in a loop
* Fixed behavior of some fastcall builtins when called without arguments
under -O2 to match original functions
* Support for native code execution in VM is now enabled by default
(note: native code still has to be generated explicitly)
* `Codegen::compile` now accepts `CodeGen_OnlyNativeModules` flag. When
set, only modules that have a `--!native` hot-comment at the top will be
compiled to native code

In our new typechecker:
* Generic type packs are no longer considered to be variadic during
unification
* Timeout and cancellation now works in new solver
* Fixed false positive errors around 'table' and 'function' type
refinements
* Table literals now use covariant unification rules. This is sound
since literal has no type specified and has no aliases
* Fixed issues with blocked types escaping the constraint solver
* Fixed more places where error messages that should've been suppressed
were still reported
* Fixed errors when iterating over a top table type

In our native code generation (jit):
* 'DebugLuauAbortingChecks' flag is now supported on A64
* LOP_NEWCLOSURE has been translated to IR
2023-07-28 08:13:53 -07:00

96 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
#pragma once
#include "Luau/Ast.h"
#include "Luau/Common.h"
#include <string>
namespace Luau
{
struct Symbol
{
Symbol()
: local(nullptr)
, global()
{
}
Symbol(AstLocal* local)
: local(local)
, global()
{
}
Symbol(const AstName& global)
: local(nullptr)
, global(global)
{
}
template<typename T>
Symbol(const T&) = delete;
AstLocal* local;
AstName global;
explicit operator bool() const
{
return local != nullptr || global.value != nullptr;
}
bool operator==(const Symbol& rhs) const;
bool operator!=(const Symbol& rhs) const
{
return !(*this == rhs);
}
bool operator<(const Symbol& rhs) const
{
if (local && rhs.local)
return local < rhs.local;
else if (global.value && rhs.global.value)
return global < rhs.global;
else if (local)
return true;
return false;
}
AstName astName() const
{
if (local)
return local->name;
LUAU_ASSERT(global.value);
return global;
}
const char* c_str() const
{
if (local)
return local->name.value;
LUAU_ASSERT(global.value);
return global.value;
}
};
std::string toString(const Symbol& name);
} // namespace Luau
namespace std
{
template<>
struct hash<Luau::Symbol>
{
std::size_t operator()(const Luau::Symbol& s) const noexcept
{
return std::hash<const Luau::AstLocal*>()(s.local) ^ (s.global.value ? std::hash<std::string_view>()(s.global.value) : 0);
}
};
} // namespace std