blob: 66613c6a015251d0f20b8984589ecdd0a6c32a8f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// Copyright 2011 Google Inc. All Rights Reserved.
#ifndef ART_SRC_CLASS_UNORDERED_MAP_H_
#define ART_SRC_CLASS_UNORDERED_MAP_H_
#include "stringpiece.h"
#ifdef __ANDROID__
#include <unordered_map>
#else
#include <tr1/unordered_map>
#endif
namespace std {
#ifndef __ANDROID__
namespace tr1 {
#endif
template<>
struct hash<art::StringPiece> {
public:
size_t operator()(const art::StringPiece& string_piece) const {
size_t string_size = string_piece.size();
const char* string_data = string_piece.data();
// this is the java.lang.String hashcode for convenience, not interoperability
size_t hash = 0;
while (string_size--) {
hash = hash * 31 + *string_data++;
}
return hash;
}
};
#ifndef __ANDROID__
} // namespace tr1
#endif
} // namespace std
#endif // ART_SRC_CLASS_UNORDERED_MAP_H_
|