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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_DECLARATIONS_H_
#define V8_TORQUE_DECLARATIONS_H_
#include <string>
#include "src/torque/declarable.h"
#include "src/torque/scope.h"
#include "src/torque/utils.h"
namespace v8 {
namespace internal {
namespace torque {
class Declarations {
public:
Declarations()
: unique_declaration_number_(0),
current_generic_specialization_(nullptr) {}
Declarable* TryLookup(const std::string& name) { return chain_.Lookup(name); }
Declarable* Lookup(const std::string& name) {
Declarable* d = TryLookup(name);
if (d == nullptr) {
std::stringstream s;
s << "cannot find \"" << name << "\"";
ReportError(s.str());
}
return d;
}
Declarable* LookupGlobalScope(const std::string& name) {
Declarable* d = chain_.LookupGlobalScope(name);
if (d == nullptr) {
std::stringstream s;
s << "cannot find \"" << name << "\" in global scope";
ReportError(s.str());
}
return d;
}
const Type* LookupType(const std::string& name);
const Type* LookupGlobalType(const std::string& name);
const Type* GetType(TypeExpression* type_expression);
const AbstractType* GetAbstractType(const Type* parent, std::string name,
std::string generated);
const Type* GetFunctionPointerType(TypeVector argument_types,
const Type* return_type);
Builtin* FindSomeInternalBuiltinWithType(const FunctionPointerType* type);
Value* LookupValue(const std::string& name);
Macro* LookupMacro(const std::string& name, const TypeVector& types);
Builtin* LookupBuiltin(const std::string& name);
Label* LookupLabel(const std::string& name);
Generic* LookupGeneric(const std::string& name);
const AbstractType* DeclareAbstractType(const std::string& name,
const std::string& generated,
const std::string* parent = nullptr);
void DeclareType(const std::string& name, const Type* type);
Label* DeclareLabel(const std::string& name);
Macro* DeclareMacro(const std::string& name, const Signature& signature);
Builtin* DeclareBuiltin(const std::string& name, Builtin::Kind kind,
bool external, const Signature& signature);
RuntimeFunction* DeclareRuntimeFunction(const std::string& name,
const Signature& signature);
Variable* DeclareVariable(const std::string& var, const Type* type);
Parameter* DeclareParameter(const std::string& name,
const std::string& mangled_name,
const Type* type);
Label* DeclarePrivateLabel(const std::string& name);
void DeclareConstant(const std::string& name, const Type* type,
const std::string& value);
Generic* DeclareGeneric(const std::string& name, Module* module,
GenericDeclaration* generic);
TypeVector GetCurrentSpecializationTypeNamesVector();
ScopeChain::Snapshot GetScopeChainSnapshot() { return chain_.TaskSnapshot(); }
std::set<const Variable*> GetLiveVariables() {
return chain_.GetLiveVariables();
}
Statement* next_body() const { return next_body_; }
void PrintScopeChain() { chain_.Print(); }
class NodeScopeActivator;
class GenericScopeActivator;
class ScopedGenericSpecializationKey;
class ScopedGenericScopeChainSnapshot;
private:
Scope* GetNodeScope(const AstNode* node);
Scope* GetGenericScope(Generic* generic, const TypeVector& types);
template <class T>
T* RegisterDeclarable(std::unique_ptr<T> d) {
T* ptr = d.get();
declarables_.push_back(std::move(d));
return ptr;
}
void Declare(const std::string& name, std::unique_ptr<Declarable> d) {
chain_.Declare(name, RegisterDeclarable(std::move(d)));
}
int GetNextUniqueDeclarationNumber() { return unique_declaration_number_++; }
void CheckAlreadyDeclared(const std::string& name, const char* new_type);
int unique_declaration_number_;
ScopeChain chain_;
const SpecializationKey* current_generic_specialization_;
Statement* next_body_;
std::vector<std::unique_ptr<Declarable>> declarables_;
Deduplicator<FunctionPointerType> function_pointer_types_;
std::vector<std::unique_ptr<Type>> nominal_types_;
std::map<std::pair<const AstNode*, TypeVector>, Scope*> scopes_;
std::map<Generic*, ScopeChain::Snapshot> generic_declaration_scopes_;
};
class Declarations::NodeScopeActivator {
public:
NodeScopeActivator(Declarations* declarations, AstNode* node)
: activator_(declarations->GetNodeScope(node)) {}
private:
Scope::Activator activator_;
};
class Declarations::GenericScopeActivator {
public:
GenericScopeActivator(Declarations* declarations,
const SpecializationKey& key)
: activator_(declarations->GetGenericScope(key.first, key.second)) {}
private:
Scope::Activator activator_;
};
class Declarations::ScopedGenericSpecializationKey {
public:
ScopedGenericSpecializationKey(Declarations* declarations,
const SpecializationKey& key)
: declarations_(declarations) {
declarations->current_generic_specialization_ = &key;
}
~ScopedGenericSpecializationKey() {
declarations_->current_generic_specialization_ = nullptr;
}
private:
Declarations* declarations_;
};
class Declarations::ScopedGenericScopeChainSnapshot {
public:
ScopedGenericScopeChainSnapshot(Declarations* declarations,
const SpecializationKey& key)
: restorer_(declarations->generic_declaration_scopes_[key.first]) {}
~ScopedGenericScopeChainSnapshot() {}
private:
ScopeChain::ScopedSnapshotRestorer restorer_;
};
} // namespace torque
} // namespace internal
} // namespace v8
#endif // V8_TORQUE_DECLARATIONS_H_
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