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// Copyright 2015 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_TYPE_HINTS_H_
#define V8_TYPE_HINTS_H_
#include "src/base/flags.h"
#include "src/utils.h"
namespace v8 {
namespace internal {
// Type hints for an binary operation.
enum class BinaryOperationHint : uint8_t {
kNone,
kSignedSmall,
kSigned32,
kNumberOrOddball,
kString,
kAny
};
inline size_t hash_value(BinaryOperationHint hint) {
return static_cast<unsigned>(hint);
}
std::ostream& operator<<(std::ostream&, BinaryOperationHint);
// Type hints for an compare operation.
enum class CompareOperationHint : uint8_t {
kNone,
kSignedSmall,
kNumber,
kNumberOrOddball,
kString,
kAny
};
inline size_t hash_value(CompareOperationHint hint) {
return static_cast<unsigned>(hint);
}
std::ostream& operator<<(std::ostream&, CompareOperationHint);
// Type hints for the ToBoolean type conversion.
enum class ToBooleanHint : uint16_t {
kNone = 0u,
kUndefined = 1u << 0,
kBoolean = 1u << 1,
kNull = 1u << 2,
kSmallInteger = 1u << 3,
kReceiver = 1u << 4,
kString = 1u << 5,
kSymbol = 1u << 6,
kHeapNumber = 1u << 7,
kSimdValue = 1u << 8,
kAny = kUndefined | kBoolean | kNull | kSmallInteger | kReceiver | kString |
kSymbol | kHeapNumber | kSimdValue,
kNeedsMap = kReceiver | kString | kSymbol | kHeapNumber | kSimdValue,
kCanBeUndetectable = kReceiver,
};
std::ostream& operator<<(std::ostream&, ToBooleanHint);
typedef base::Flags<ToBooleanHint, uint16_t> ToBooleanHints;
std::ostream& operator<<(std::ostream&, ToBooleanHints);
DEFINE_OPERATORS_FOR_FLAGS(ToBooleanHints)
enum StringAddFlags {
// Omit both parameter checks.
STRING_ADD_CHECK_NONE = 0,
// Check left parameter.
STRING_ADD_CHECK_LEFT = 1 << 0,
// Check right parameter.
STRING_ADD_CHECK_RIGHT = 1 << 1,
// Check both parameters.
STRING_ADD_CHECK_BOTH = STRING_ADD_CHECK_LEFT | STRING_ADD_CHECK_RIGHT,
// Convert parameters when check fails (instead of throwing an exception).
STRING_ADD_CONVERT = 1 << 2,
STRING_ADD_CONVERT_LEFT = STRING_ADD_CHECK_LEFT | STRING_ADD_CONVERT,
STRING_ADD_CONVERT_RIGHT = STRING_ADD_CHECK_RIGHT | STRING_ADD_CONVERT
};
std::ostream& operator<<(std::ostream& os, const StringAddFlags& flags);
} // namespace internal
} // namespace v8
#endif // V8_TYPE_HINTS_H_