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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkTDict_DEFINED
#define SkTDict_DEFINED
#include "SkChunkAlloc.h"
#include "SkTSearch.h"
#include "SkTDArray.h"
template <typename T> class SkTDict : SkNoncopyable {
public:
SkTDict(size_t minStringAlloc) : fStrings(minStringAlloc) {}
void reset() {
fArray.reset();
fStrings.reset();
}
int count() const { return fArray.count(); }
bool set(const char name[], const T& value) {
return set(name, strlen(name), value);
}
bool set(const char name[], size_t len, const T& value) {
SkASSERT(name);
int index = this->find_index(name, len);
if (index >= 0) {
fArray[index].fValue = value;
return false;
} else {
Pair* pair = fArray.insert(~index);
char* copy = (char*)fStrings.alloc(len + 1, SkChunkAlloc::kThrow_AllocFailType);
memcpy(copy, name, len);
copy[len] = '\0';
pair->fName = copy;
pair->fValue = value;
return true;
}
}
bool find(const char name[]) const {
return this->find_index(name) >= 0;
}
bool find(const char name[], size_t len) const {
return this->find_index(name, len) >= 0;
}
bool find(const char name[], T* value) const {
return find(name, strlen(name), value);
}
bool find(const char name[], size_t len, T* value) const {
int index = this->find_index(name, len);
if (index >= 0) {
if (value) {
*value = fArray[index].fValue;
}
return true;
}
return false;
}
bool findKey(T& value, const char** name) const {
const Pair* end = fArray.end();
for (const Pair* pair = fArray.begin(); pair < end; pair++) {
if (pair->fValue != value) {
continue;
}
*name = pair->fName;
return true;
}
return false;
}
public:
struct Pair {
const char* fName;
T fValue;
friend int operator<(const Pair& a, const Pair& b) {
return strcmp(a.fName, b.fName);
}
friend int operator!=(const Pair& a, const Pair& b) {
return strcmp(a.fName, b.fName);
}
};
friend class Iter;
public:
class Iter {
public:
Iter(const SkTDict<T>& dict) {
fIter = dict.fArray.begin();
fStop = dict.fArray.end();
}
const char* next(T* value) {
const char* name = NULL;
if (fIter < fStop) {
name = fIter->fName;
if (value) {
*value = fIter->fValue;
}
fIter += 1;
}
return name;
}
private:
const Pair* fIter;
const Pair* fStop;
};
private:
SkTDArray<Pair> fArray;
SkChunkAlloc fStrings;
int find_index(const char name[]) const {
return find_index(name, strlen(name));
}
int find_index(const char name[], size_t len) const {
SkASSERT(name);
int count = fArray.count();
int index = ~0;
if (count) {
index = SkStrSearch(&fArray.begin()->fName, count, name, len, sizeof(Pair));
}
return index;
}
friend class Iter;
};
#endif
|
