1 | // Copyright 2018 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_OBJECTS_INSTANCE_TYPE_INL_H_ |
6 | #define V8_OBJECTS_INSTANCE_TYPE_INL_H_ |
7 | |
8 | #include "src/objects/map-inl.h" |
9 | #include "src/utils.h" |
10 | |
11 | // Has to be the last include (doesn't have include guards): |
12 | #include "src/objects/object-macros.h" |
13 | |
14 | namespace v8 { |
15 | namespace internal { |
16 | |
17 | namespace InstanceTypeChecker { |
18 | |
19 | // Define type checkers for classes with single instance type. |
20 | INSTANCE_TYPE_CHECKERS_SINGLE(INSTANCE_TYPE_CHECKER) |
21 | |
22 | #define TYPED_ARRAY_INSTANCE_TYPE_CHECKER(Type, type, TYPE, ctype) \ |
23 | INSTANCE_TYPE_CHECKER(Fixed##Type##Array, FIXED_##TYPE##_ARRAY_TYPE) |
24 | TYPED_ARRAYS(TYPED_ARRAY_INSTANCE_TYPE_CHECKER) |
25 | #undef TYPED_ARRAY_INSTANCE_TYPE_CHECKER |
26 | |
27 | #define STRUCT_INSTANCE_TYPE_CHECKER(TYPE, Name, name) \ |
28 | INSTANCE_TYPE_CHECKER(Name, TYPE) |
29 | STRUCT_LIST(STRUCT_INSTANCE_TYPE_CHECKER) |
30 | #undef STRUCT_INSTANCE_TYPE_CHECKER |
31 | |
32 | // Define type checkers for classes with ranges of instance types. |
33 | #define INSTANCE_TYPE_CHECKER_RANGE(type, first_instance_type, \ |
34 | last_instance_type) \ |
35 | V8_INLINE bool Is##type(InstanceType instance_type) { \ |
36 | return IsInRange(instance_type, first_instance_type, last_instance_type); \ |
37 | } |
38 | INSTANCE_TYPE_CHECKERS_RANGE(INSTANCE_TYPE_CHECKER_RANGE) |
39 | #undef INSTANCE_TYPE_CHECKER_RANGE |
40 | |
41 | V8_INLINE bool IsFixedArrayBase(InstanceType instance_type) { |
42 | return IsFixedArray(instance_type) || IsFixedDoubleArray(instance_type) || |
43 | IsFixedTypedArrayBase(instance_type) || IsByteArray(instance_type) || |
44 | IsBytecodeArray(instance_type); |
45 | } |
46 | |
47 | V8_INLINE bool IsHeapObject(InstanceType instance_type) { return true; } |
48 | |
49 | V8_INLINE bool IsInternalizedString(InstanceType instance_type) { |
50 | STATIC_ASSERT(kNotInternalizedTag != 0); |
51 | return (instance_type & (kIsNotStringMask | kIsNotInternalizedMask)) == |
52 | (kStringTag | kInternalizedTag); |
53 | } |
54 | |
55 | V8_INLINE bool IsJSObject(InstanceType instance_type) { |
56 | STATIC_ASSERT(LAST_TYPE == LAST_JS_OBJECT_TYPE); |
57 | return instance_type >= FIRST_JS_OBJECT_TYPE; |
58 | } |
59 | |
60 | V8_INLINE bool IsJSReceiver(InstanceType instance_type) { |
61 | STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE); |
62 | return instance_type >= FIRST_JS_RECEIVER_TYPE; |
63 | } |
64 | |
65 | } // namespace InstanceTypeChecker |
66 | |
67 | // TODO(v8:7786): For instance types that have a single map instance on the |
68 | // roots, and when that map is a embedded in the binary, compare against the map |
69 | // pointer rather than looking up the instance type. |
70 | INSTANCE_TYPE_CHECKERS(TYPE_CHECKER) |
71 | |
72 | #define TYPED_ARRAY_TYPE_CHECKER(Type, type, TYPE, ctype) \ |
73 | TYPE_CHECKER(Fixed##Type##Array) |
74 | TYPED_ARRAYS(TYPED_ARRAY_TYPE_CHECKER) |
75 | #undef TYPED_ARRAY_TYPE_CHECKER |
76 | |
77 | } // namespace internal |
78 | } // namespace v8 |
79 | |
80 | #include "src/objects/object-macros-undef.h" |
81 | |
82 | #endif // V8_OBJECTS_INSTANCE_TYPE_INL_H_ |
83 | |