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
hash_value(BinaryOperationHint hint)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
hash_value(CompareOperationHint hint)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