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// Copyright 2019 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_OBJECTS_FUNCTION_KIND_H_
#define V8_OBJECTS_FUNCTION_KIND_H_
#include "src/base/bounds.h"
#include "src/base/macros.h"
namespace v8 {
namespace internal {
enum FunctionKind : uint8_t {
// BEGIN constructable functions
kNormalFunction,
kModule,
kAsyncModule,
// BEGIN class constructors
// BEGIN base constructors
kBaseConstructor,
// BEGIN default constructors
kDefaultBaseConstructor,
// END base constructors
// BEGIN derived constructors
kDefaultDerivedConstructor,
// END default constructors
kDerivedConstructor,
// END derived constructors
// END class constructors
// END constructable functions.
// BEGIN accessors
kGetterFunction,
kStaticGetterFunction,
kSetterFunction,
kStaticSetterFunction,
// END accessors
// BEGIN arrow functions
kArrowFunction,
// BEGIN async functions
kAsyncArrowFunction,
// END arrow functions
kAsyncFunction,
// BEGIN concise methods 1
kAsyncConciseMethod,
kStaticAsyncConciseMethod,
// BEGIN generators
kAsyncConciseGeneratorMethod,
kStaticAsyncConciseGeneratorMethod,
// END concise methods 1
kAsyncGeneratorFunction,
// END async functions
kGeneratorFunction,
// BEGIN concise methods 2
kConciseGeneratorMethod,
kStaticConciseGeneratorMethod,
// END generators
kConciseMethod,
kStaticConciseMethod,
kClassMembersInitializerFunction,
kClassStaticInitializerFunction,
// END concise methods 2
kLastFunctionKind = kClassStaticInitializerFunction,
};
constexpr int kFunctionKindBitSize = 5;
STATIC_ASSERT(kLastFunctionKind < (1 << kFunctionKindBitSize));
inline bool IsArrowFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kArrowFunction,
FunctionKind::kAsyncArrowFunction);
}
inline bool IsModule(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kModule,
FunctionKind::kAsyncModule);
}
inline bool IsAsyncModule(FunctionKind kind) {
return kind == FunctionKind::kAsyncModule;
}
inline bool IsAsyncGeneratorFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kAsyncConciseGeneratorMethod,
FunctionKind::kAsyncGeneratorFunction);
}
inline bool IsGeneratorFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kAsyncConciseGeneratorMethod,
FunctionKind::kStaticConciseGeneratorMethod);
}
inline bool IsAsyncFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kAsyncArrowFunction,
FunctionKind::kAsyncGeneratorFunction);
}
inline bool IsResumableFunction(FunctionKind kind) {
return IsGeneratorFunction(kind) || IsAsyncFunction(kind) || IsModule(kind);
}
inline bool IsConciseMethod(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kAsyncConciseMethod,
FunctionKind::kStaticAsyncConciseGeneratorMethod) ||
base::IsInRange(kind, FunctionKind::kConciseGeneratorMethod,
FunctionKind::kClassStaticInitializerFunction);
}
inline bool IsStrictFunctionWithoutPrototype(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kGetterFunction,
FunctionKind::kAsyncArrowFunction) ||
base::IsInRange(kind, FunctionKind::kAsyncConciseMethod,
FunctionKind::kStaticAsyncConciseGeneratorMethod) ||
base::IsInRange(kind, FunctionKind::kConciseGeneratorMethod,
FunctionKind::kClassStaticInitializerFunction);
}
inline bool IsGetterFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kGetterFunction,
FunctionKind::kStaticGetterFunction);
}
inline bool IsSetterFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kSetterFunction,
FunctionKind::kStaticSetterFunction);
}
inline bool IsAccessorFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kGetterFunction,
FunctionKind::kStaticSetterFunction);
}
inline bool IsDefaultConstructor(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kDefaultBaseConstructor,
FunctionKind::kDefaultDerivedConstructor);
}
inline bool IsBaseConstructor(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kBaseConstructor,
FunctionKind::kDefaultBaseConstructor);
}
inline bool IsDerivedConstructor(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kDefaultDerivedConstructor,
FunctionKind::kDerivedConstructor);
}
inline bool IsClassConstructor(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kBaseConstructor,
FunctionKind::kDerivedConstructor);
}
inline bool IsClassMembersInitializerFunction(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kClassMembersInitializerFunction,
FunctionKind::kClassStaticInitializerFunction);
}
inline bool IsConstructable(FunctionKind kind) {
return base::IsInRange(kind, FunctionKind::kNormalFunction,
FunctionKind::kDerivedConstructor);
}
inline bool IsStatic(FunctionKind kind) {
switch (kind) {
case FunctionKind::kStaticGetterFunction:
case FunctionKind::kStaticSetterFunction:
case FunctionKind::kStaticConciseMethod:
case FunctionKind::kStaticConciseGeneratorMethod:
case FunctionKind::kStaticAsyncConciseMethod:
case FunctionKind::kStaticAsyncConciseGeneratorMethod:
case FunctionKind::kClassStaticInitializerFunction:
return true;
default:
return false;
}
}
inline bool BindsSuper(FunctionKind kind) {
return IsConciseMethod(kind) || IsAccessorFunction(kind) ||
IsClassConstructor(kind);
}
inline bool IsAwaitAsIdentifierDisallowed(FunctionKind kind) {
// 'await' is always disallowed as an identifier in module contexts. Callers
// should short-circuit the module case instead of calling this.
DCHECK(!IsModule(kind));
return IsAsyncFunction(kind) ||
kind == FunctionKind::kClassStaticInitializerFunction;
}
inline const char* FunctionKind2String(FunctionKind kind) {
switch (kind) {
case FunctionKind::kNormalFunction:
return "NormalFunction";
case FunctionKind::kArrowFunction:
return "ArrowFunction";
case FunctionKind::kGeneratorFunction:
return "GeneratorFunction";
case FunctionKind::kConciseMethod:
return "ConciseMethod";
case FunctionKind::kStaticConciseMethod:
return "StaticConciseMethod";
case FunctionKind::kDerivedConstructor:
return "DerivedConstructor";
case FunctionKind::kBaseConstructor:
return "BaseConstructor";
case FunctionKind::kGetterFunction:
return "GetterFunction";
case FunctionKind::kStaticGetterFunction:
return "StaticGetterFunction";
case FunctionKind::kSetterFunction:
return "SetterFunction";
case FunctionKind::kStaticSetterFunction:
return "StaticSetterFunction";
case FunctionKind::kAsyncFunction:
return "AsyncFunction";
case FunctionKind::kModule:
return "Module";
case FunctionKind::kAsyncModule:
return "AsyncModule";
case FunctionKind::kClassMembersInitializerFunction:
return "ClassMembersInitializerFunction";
case FunctionKind::kClassStaticInitializerFunction:
return "ClassStaticInitializerFunction";
case FunctionKind::kDefaultBaseConstructor:
return "DefaultBaseConstructor";
case FunctionKind::kDefaultDerivedConstructor:
return "DefaultDerivedConstructor";
case FunctionKind::kAsyncArrowFunction:
return "AsyncArrowFunction";
case FunctionKind::kAsyncConciseMethod:
return "AsyncConciseMethod";
case FunctionKind::kStaticAsyncConciseMethod:
return "StaticAsyncConciseMethod";
case FunctionKind::kConciseGeneratorMethod:
return "ConciseGeneratorMethod";
case FunctionKind::kStaticConciseGeneratorMethod:
return "StaticConciseGeneratorMethod";
case FunctionKind::kAsyncConciseGeneratorMethod:
return "AsyncConciseGeneratorMethod";
case FunctionKind::kStaticAsyncConciseGeneratorMethod:
return "StaticAsyncConciseGeneratorMethod";
case FunctionKind::kAsyncGeneratorFunction:
return "AsyncGeneratorFunction";
}
UNREACHABLE();
}
inline std::ostream& operator<<(std::ostream& os, FunctionKind kind) {
return os << FunctionKind2String(kind);
}
} // namespace internal
} // namespace v8
#endif // V8_OBJECTS_FUNCTION_KIND_H_
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