luau/Analysis/include/Luau/Module.h
Arseny Kapoulkine 08c66ef2e1 Sync to upstream/release/502
Changes:
- Support for time tracing for analysis/compiler (not currently exposed
  through CLI)
- Support for type pack arguments in type aliases (#83)
- Basic support for require(path) in luau-analyze
- Add a lint warning for table.move with 0 index as part of
  TableOperation lint
- Remove last STL dependency from Luau.VM
- Minor VS2022 performance tuning

Co-authored-by: Rodactor <rodactor@roblox.com>
2021-11-04 19:12:52 -07:00

113 lines
3.3 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/FileResolver.h"
#include "Luau/TypePack.h"
#include "Luau/TypedAllocator.h"
#include "Luau/ParseOptions.h"
#include "Luau/Error.h"
#include "Luau/Parser.h"
#include <memory>
#include <vector>
#include <unordered_map>
#include <optional>
namespace Luau
{
struct Module;
using ScopePtr = std::shared_ptr<struct Scope>;
using ModulePtr = std::shared_ptr<Module>;
/// Root of the AST of a parsed source file
struct SourceModule
{
ModuleName name; // DataModel path if possible. Filename if not.
SourceCode::Type type = SourceCode::None;
std::optional<std::string> environmentName;
bool cyclic = false;
std::unique_ptr<Allocator> allocator;
std::unique_ptr<AstNameTable> names;
std::vector<ParseError> parseErrors;
AstStatBlock* root = nullptr;
std::optional<Mode> mode;
uint64_t ignoreLints = 0;
std::vector<Comment> commentLocations;
SourceModule()
: allocator(new Allocator)
, names(new AstNameTable(*allocator))
{
}
};
bool isWithinComment(const SourceModule& sourceModule, Position pos);
struct TypeArena
{
TypedAllocator<TypeVar> typeVars;
TypedAllocator<TypePackVar> typePacks;
void clear();
template<typename T>
TypeId addType(T tv)
{
return addTV(TypeVar(std::move(tv)));
}
TypeId addTV(TypeVar&& tv);
TypeId freshType(TypeLevel level);
TypePackId addTypePack(std::initializer_list<TypeId> types);
TypePackId addTypePack(std::vector<TypeId> types);
TypePackId addTypePack(TypePack pack);
TypePackId addTypePack(TypePackVar pack);
};
void freeze(TypeArena& arena);
void unfreeze(TypeArena& arena);
// Only exposed so they can be unit tested.
using SeenTypes = std::unordered_map<TypeId, TypeId>;
using SeenTypePacks = std::unordered_map<TypePackId, TypePackId>;
TypePackId clone(TypePackId tp, TypeArena& dest, SeenTypes& seenTypes, SeenTypePacks& seenTypePacks, bool* encounteredFreeType = nullptr);
TypeId clone(TypeId tp, TypeArena& dest, SeenTypes& seenTypes, SeenTypePacks& seenTypePacks, bool* encounteredFreeType = nullptr);
TypeFun clone(const TypeFun& typeFun, TypeArena& dest, SeenTypes& seenTypes, SeenTypePacks& seenTypePacks, bool* encounteredFreeType = nullptr);
struct Module
{
~Module();
TypeArena interfaceTypes;
TypeArena internalTypes;
std::vector<std::pair<Location, ScopePtr>> scopes; // never empty
DenseHashMap<const AstExpr*, TypeId> astTypes{nullptr};
DenseHashMap<const AstExpr*, TypeId> astExpectedTypes{nullptr};
DenseHashMap<const AstExpr*, TypeId> astOriginalCallTypes{nullptr};
DenseHashMap<const AstExpr*, TypeId> astOverloadResolvedTypes{nullptr};
std::unordered_map<Name, TypeId> declaredGlobals;
ErrorVec errors;
Mode mode;
SourceCode::Type type;
ScopePtr getModuleScope() const;
// Once a module has been typechecked, we clone its public interface into a separate arena.
// This helps us to force TypeVar ownership into a DAG rather than a DCG.
// Returns true if there were any free types encountered in the public interface. This
// indicates a bug in the type checker that we want to surface.
bool clonePublicInterface();
};
} // namespace Luau