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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_TORQUE_TYPE_ORACLE_H_
#define V8_TORQUE_TYPE_ORACLE_H_
#include "src/torque/contextual.h"
#include "src/torque/declarable.h"
#include "src/torque/declarations.h"
#include "src/torque/types.h"
#include "src/torque/utils.h"
namespace v8 {
namespace internal {
namespace torque {
class TypeOracle : public ContextualClass<TypeOracle> {
public:
explicit TypeOracle(Declarations* declarations)
: declarations_(declarations) {}
static const AbstractType* GetAbstractType(
const Type* parent, std::string name, std::string generated,
base::Optional<const AbstractType*> non_constexpr_version) {
AbstractType* result = new AbstractType(
parent, std::move(name), std::move(generated), non_constexpr_version);
Get().nominal_types_.push_back(std::unique_ptr<AbstractType>(result));
return result;
}
static const StructType* GetStructType(
Module* module, const std::string& name,
const std::vector<NameAndType>& fields) {
StructType* result = new StructType(module, name, fields);
Get().struct_types_.push_back(std::unique_ptr<StructType>(result));
return result;
}
static const FunctionPointerType* GetFunctionPointerType(
TypeVector argument_types, const Type* return_type) {
const Type* code_type = Get().GetBuiltinType(CODE_TYPE_STRING);
return Get().function_pointer_types_.Add(
FunctionPointerType(code_type, argument_types, return_type));
}
static const Type* GetUnionType(UnionType type) {
if (base::Optional<const Type*> single = type.GetSingleMember()) {
return *single;
}
return Get().union_types_.Add(std::move(type));
}
static const Type* GetUnionType(const Type* a, const Type* b) {
if (a->IsSubtypeOf(b)) return b;
if (b->IsSubtypeOf(a)) return a;
UnionType result = UnionType::FromType(a);
result.Extend(b);
return GetUnionType(std::move(result));
}
static const Type* GetArgumentsType() {
return Get().GetBuiltinType(ARGUMENTS_TYPE_STRING);
}
static const Type* GetBoolType() {
return Get().GetBuiltinType(BOOL_TYPE_STRING);
}
static const Type* GetConstexprBoolType() {
return Get().GetBuiltinType(CONSTEXPR_BOOL_TYPE_STRING);
}
static const Type* GetVoidType() {
return Get().GetBuiltinType(VOID_TYPE_STRING);
}
static const Type* GetObjectType() {
return Get().GetBuiltinType(OBJECT_TYPE_STRING);
}
static const Type* GetConstStringType() {
return Get().GetBuiltinType(CONST_STRING_TYPE_STRING);
}
static const Type* GetIntPtrType() {
return Get().GetBuiltinType(INTPTR_TYPE_STRING);
}
static const Type* GetNeverType() {
return Get().GetBuiltinType(NEVER_TYPE_STRING);
}
static const Type* GetConstInt31Type() {
return Get().GetBuiltinType(CONST_INT31_TYPE_STRING);
}
static bool IsImplicitlyConvertableFrom(const Type* to, const Type* from) {
std::string name = GetGeneratedCallableName(kFromConstexprMacroName, {to});
return Get().declarations_->TryLookupMacro(name, {from}) != nullptr;
}
private:
const Type* GetBuiltinType(const std::string& name) {
return declarations_->LookupGlobalType(name);
}
Declarations* declarations_;
Deduplicator<FunctionPointerType> function_pointer_types_;
Deduplicator<UnionType> union_types_;
std::vector<std::unique_ptr<Type>> nominal_types_;
std::vector<std::unique_ptr<Type>> struct_types_;
};
} // namespace torque
} // namespace internal
} // namespace v8
#endif // V8_TORQUE_TYPE_ORACLE_H_
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