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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:
static const AbstractType* GetAbstractType(
const Type* parent, std::string name, bool transient,
std::string generated,
base::Optional<const AbstractType*> non_constexpr_version) {
AbstractType* result =
new AbstractType(parent, transient, std::move(name),
std::move(generated), non_constexpr_version);
Get().nominal_types_.push_back(std::unique_ptr<AbstractType>(result));
return result;
}
static StructType* GetStructType(const std::string& name,
const std::vector<Field>& fields) {
StructType* result = new StructType(CurrentNamespace(), name, fields);
Get().struct_types_.push_back(std::unique_ptr<StructType>(result));
return result;
}
static ClassType* GetClassType(const Type* parent, const std::string& name,
bool transient, const std::string& generates,
const std::vector<Field>& fields,
StructType* this_struct, size_t size) {
ClassType* result =
new ClassType(parent, CurrentNamespace(), name, transient, generates,
fields, this_struct, size);
Get().struct_types_.push_back(std::unique_ptr<ClassType>(result));
return result;
}
static const BuiltinPointerType* GetBuiltinPointerType(
TypeVector argument_types, const Type* return_type) {
TypeOracle& self = Get();
const Type* builtin_type = self.GetBuiltinType(BUILTIN_POINTER_TYPE_STRING);
const BuiltinPointerType* result = self.function_pointer_types_.Add(
BuiltinPointerType(builtin_type, argument_types, return_type,
self.all_builtin_pointer_types_.size()));
if (result->function_pointer_type_id() ==
self.all_builtin_pointer_types_.size()) {
self.all_builtin_pointer_types_.push_back(result);
}
return result;
}
static const std::vector<const BuiltinPointerType*>&
AllBuiltinPointerTypes() {
return Get().all_builtin_pointer_types_;
}
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 TopType* GetTopType(std::string reason,
const Type* source_type) {
TopType* result = new TopType(std::move(reason), source_type);
Get().top_types_.push_back(std::unique_ptr<TopType>(result));
return 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* GetRawPtrType() {
return Get().GetBuiltinType(RAWPTR_TYPE_STRING);
}
static const Type* GetObjectType() {
return Get().GetBuiltinType(OBJECT_TYPE_STRING);
}
static const Type* GetTaggedType() {
return Get().GetBuiltinType(TAGGED_TYPE_STRING);
}
static const Type* GetSmiType() {
return Get().GetBuiltinType(SMI_TYPE_STRING);
}
static const Type* GetConstStringType() {
return Get().GetBuiltinType(CONST_STRING_TYPE_STRING);
}
static const Type* GetStringType() {
return Get().GetBuiltinType(STRING_TYPE_STRING);
}
static const Type* GetNumberType() {
return Get().GetBuiltinType(NUMBER_TYPE_STRING);
}
static const Type* GetIntPtrType() {
return Get().GetBuiltinType(INTPTR_TYPE_STRING);
}
static const Type* GetUIntPtrType() {
return Get().GetBuiltinType(UINTPTR_TYPE_STRING);
}
static const Type* GetInt32Type() {
return Get().GetBuiltinType(INT32_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) {
for (Generic* from_constexpr :
Declarations::LookupGeneric(kFromConstexprMacroName)) {
if (base::Optional<Callable*> specialization =
from_constexpr->GetSpecialization({to, from})) {
if ((*specialization)->signature().GetExplicitTypes() ==
TypeVector{from}) {
return true;
}
}
}
return false;
}
private:
const Type* GetBuiltinType(const std::string& name) {
return Declarations::LookupGlobalType(name);
}
Deduplicator<BuiltinPointerType> function_pointer_types_;
std::vector<const BuiltinPointerType*> all_builtin_pointer_types_;
Deduplicator<UnionType> union_types_;
std::vector<std::unique_ptr<Type>> nominal_types_;
std::vector<std::unique_ptr<Type>> struct_types_;
std::vector<std::unique_ptr<Type>> top_types_;
};
} // namespace torque
} // namespace internal
} // namespace v8
#endif // V8_TORQUE_TYPE_ORACLE_H_
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