1 // Copyright 2020 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_STRING_SET_H_
6 #define V8_OBJECTS_STRING_SET_H_
7 
8 #include "src/objects/hash-table.h"
9 
10 // Has to be the last include (doesn't have include guards):
11 #include "src/objects/object-macros.h"
12 
13 namespace v8 {
14 namespace internal {
15 
16 class StringSetShape : public BaseShape<String> {
17  public:
18   static inline bool IsMatch(String key, Object value);
19   static inline uint32_t Hash(ReadOnlyRoots roots, String key);
20   static inline uint32_t HashForObject(ReadOnlyRoots roots, Object object);
21 
22   static const int kPrefixSize = 0;
23   static const int kEntrySize = 1;
24   static const bool kMatchNeedsHoleCheck = true;
25 };
26 
27 EXTERN_DECLARE_HASH_TABLE(StringSet, StringSetShape)
28 
29 class StringSet : public HashTable<StringSet, StringSetShape> {
30  public:
31   V8_EXPORT_PRIVATE static Handle<StringSet> New(Isolate* isolate);
32   V8_EXPORT_PRIVATE static Handle<StringSet> Add(Isolate* isolate,
33                                                  Handle<StringSet> stringset,
34                                                  Handle<String> name);
35   V8_EXPORT_PRIVATE bool Has(Isolate* isolate, Handle<String> name);
36 
37   DECL_CAST(StringSet)
38   OBJECT_CONSTRUCTORS(StringSet, HashTable<StringSet, StringSetShape>);
39 };
40 
41 }  // namespace internal
42 }  // namespace v8
43 
44 #include "src/objects/object-macros-undef.h"
45 
46 #endif  // V8_OBJECTS_STRING_SET_H_
47