1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_TYPE_HINTS_H_ 6 #define V8_TYPE_HINTS_H_ 7 8 #include "src/base/flags.h" 9 #include "src/utils.h" 10 11 namespace v8 { 12 namespace internal { 13 14 // Type hints for an binary operation. 15 enum class BinaryOperationHint : uint8_t { 16 kNone, 17 kSignedSmall, 18 kSignedSmallInputs, 19 kSigned32, 20 kNumber, 21 kNumberOrOddball, 22 kString, 23 kBigInt, 24 kAny 25 }; 26 27 inline size_t hash_value(BinaryOperationHint hint) { 28 return static_cast<unsigned>(hint); 29 } 30 31 std::ostream& operator<<(std::ostream&, BinaryOperationHint); 32 33 // Type hints for an compare operation. 34 enum class CompareOperationHint : uint8_t { 35 kNone, 36 kSignedSmall, 37 kNumber, 38 kNumberOrOddball, 39 kInternalizedString, 40 kString, 41 kSymbol, 42 kBigInt, 43 kReceiver, 44 kAny 45 }; 46 47 inline size_t hash_value(CompareOperationHint hint) { 48 return static_cast<unsigned>(hint); 49 } 50 51 std::ostream& operator<<(std::ostream&, CompareOperationHint); 52 53 // Type hints for for..in statements. 54 enum class ForInHint : uint8_t { 55 kNone, 56 kEnumCacheKeysAndIndices, 57 kEnumCacheKeys, 58 kAny 59 }; 60 61 std::ostream& operator<<(std::ostream&, ForInHint); 62 63 enum StringAddFlags { 64 // Omit both parameter checks. 65 STRING_ADD_CHECK_NONE, 66 // Convert parameters when check fails (instead of throwing an exception). 67 STRING_ADD_CONVERT_LEFT, 68 STRING_ADD_CONVERT_RIGHT, 69 }; 70 71 std::ostream& operator<<(std::ostream& os, const StringAddFlags& flags); 72 73 } // namespace internal 74 } // namespace v8 75 76 #endif // V8_TYPE_HINTS_H_ 77
