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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 {
static constexpr const char* const kFromConstexprMacroName = "from_constexpr";
static constexpr const char* kTrueLabelName = "_True";
static constexpr const char* kFalseLabelName = "_False";
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);
Builtin* FindSomeInternalBuiltinWithType(const FunctionPointerType* type);
Value* LookupValue(const std::string& name);
Macro* TryLookupMacro(const std::string& name, const TypeVector& types);
Macro* LookupMacro(const std::string& name, const TypeVector& types);
Builtin* LookupBuiltin(const std::string& name);
Label* TryLookupLabel(const std::string& name) {
Declarable* d = TryLookup(name);
return d && d->IsLabel() ? Label::cast(d) : nullptr;
}
Label* LookupLabel(const std::string& name);
GenericList* LookupGeneric(const std::string& name);
ModuleConstant* LookupModuleConstant(const std::string& name);
const AbstractType* DeclareAbstractType(
const std::string& name, const std::string& generated,
base::Optional<const AbstractType*> non_constexpr_version,
const base::Optional<std::string>& parent = {});
void DeclareType(const std::string& name, const Type* type);
void DeclareStruct(Module* module, const std::string& name,
const std::vector<NameAndType>& fields);
Label* DeclareLabel(const std::string& name);
Macro* DeclareMacro(const std::string& name, const Signature& signature,
base::Optional<std::string> op = {});
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,
bool is_const);
Parameter* DeclareParameter(const std::string& name,
const std::string& mangled_name,
const Type* type);
Label* DeclarePrivateLabel(const std::string& name);
void DeclareExternConstant(const std::string& name, const Type* type,
const std::string& value);
ModuleConstant* DeclareModuleConstant(const std::string& name,
const Type* type);
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 ModuleScopeActivator;
class NodeScopeActivator;
class CleanNodeScopeActivator;
class GenericScopeActivator;
class ScopedGenericSpecializationKey;
class ScopedGenericScopeChainSnapshot;
private:
Scope* GetModuleScope(const Module* module);
Scope* GetNodeScope(const AstNode* node, bool reset_scope = false);
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;
}
MacroList* GetMacroListForName(const std::string& name,
const Signature& signature);
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_;
std::map<const Module*, Scope*> module_scopes_;
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::ModuleScopeActivator {
public:
ModuleScopeActivator(Declarations* declarations, const Module* module)
: activator_(declarations->GetModuleScope(module)) {}
private:
Scope::Activator activator_;
};
class Declarations::CleanNodeScopeActivator {
public:
CleanNodeScopeActivator(Declarations* declarations, AstNode* node)
: activator_(declarations->GetNodeScope(node, true)) {}
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_;
};
std::string GetGeneratedCallableName(const std::string& name,
const TypeVector& specialized_types);
} // namespace torque
} // namespace internal
} // namespace v8
#endif // V8_TORQUE_DECLARATIONS_H_
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