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// Copyright 2016 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_INTERPRETER_BYTECODE_FLAGS_H_
#define V8_INTERPRETER_BYTECODE_FLAGS_H_
#include "src/utils.h"
namespace v8 {
namespace internal {
// Forward declarations.
class Literal;
class AstStringConstants;
namespace interpreter {
class CreateArrayLiteralFlags {
public:
class FlagsBits : public BitField8<int, 0, 3> {};
class FastShallowCloneBit : public BitField8<bool, FlagsBits::kNext, 1> {};
static uint8_t Encode(bool use_fast_shallow_clone, int runtime_flags);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(CreateArrayLiteralFlags);
};
class CreateObjectLiteralFlags {
public:
class FlagsBits : public BitField8<int, 0, 3> {};
class FastClonePropertiesCountBits
: public BitField8<int, FlagsBits::kNext, 3> {};
static uint8_t Encode(bool fast_clone_supported, int properties_count,
int runtime_flags);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(CreateObjectLiteralFlags);
};
class CreateClosureFlags {
public:
class PretenuredBit : public BitField8<bool, 0, 1> {};
class FastNewClosureBit : public BitField8<bool, PretenuredBit::kNext, 1> {};
static uint8_t Encode(bool pretenure, bool is_function_scope);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(CreateClosureFlags);
};
#define TYPEOF_LITERAL_LIST(V) \
V(Number, number) \
V(String, string) \
V(Symbol, symbol) \
V(Boolean, boolean) \
V(Undefined, undefined) \
V(Function, function) \
V(Object, object) \
V(Other, other)
class TestTypeOfFlags {
public:
enum class LiteralFlag : uint8_t {
#define DECLARE_LITERAL_FLAG(name, _) k##name,
TYPEOF_LITERAL_LIST(DECLARE_LITERAL_FLAG)
#undef DECLARE_LITERAL_FLAG
};
static LiteralFlag GetFlagForLiteral(const AstStringConstants* ast_constants,
Literal* literal);
static uint8_t Encode(LiteralFlag literal_flag);
static LiteralFlag Decode(uint8_t raw_flag);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(TestTypeOfFlags);
};
class SuspendGeneratorBytecodeFlags {
public:
class FlagsBits
: public BitField8<SuspendFlags, 0,
static_cast<int>(SuspendFlags::kBitWidth)> {};
static uint8_t Encode(SuspendFlags suspend_type);
static SuspendFlags Decode(uint8_t flags);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(SuspendGeneratorBytecodeFlags);
};
} // namespace interpreter
} // namespace internal
} // namespace v8
#endif // V8_INTERPRETER_BYTECODE_FLAGS_H_
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