blob: 6fb8a32578965fc255b98ac15ed76cac3893c7e7 (
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
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
|
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_CPP_EXTENSIONS_FROM_VAR_CONVERTOR_H_
#define PPAPI_CPP_EXTENSIONS_FROM_VAR_CONVERTOR_H_
#include <string>
#include "ppapi/c/pp_var.h"
#include "ppapi/cpp/extensions/optional.h"
#include "ppapi/cpp/logging.h"
#include "ppapi/cpp/var.h"
namespace pp {
namespace ext {
namespace internal {
template <class T>
class FromVarConverterBase {
public:
T& value() { return value_; }
protected:
FromVarConverterBase() : value_() {
}
explicit FromVarConverterBase(const T& value) : value_(value) {
}
~FromVarConverterBase() {
}
T value_;
};
template <class T>
class FromVarConverter : public FromVarConverterBase<T> {
public:
FromVarConverter() {
}
FromVarConverter(const PP_Var& var) {
Set(var);
}
~FromVarConverter() {
}
void Set(const PP_Var& var) {
bool succeeded = FromVarConverterBase<T>::value_.Populate(var);
// Suppress unused variable warnings.
static_cast<void>(succeeded);
PP_DCHECK(succeeded);
}
};
template <class T>
class FromVarConverter<Optional<T> >
: public FromVarConverterBase<Optional<T> > {
public:
FromVarConverter() {
}
FromVarConverter(const PP_Var& var) {
Set(var);
}
~FromVarConverter() {
}
void Set(const PP_Var& var) {
if (var.type == PP_VARTYPE_UNDEFINED) {
FromVarConverterBase<Optional<T> >::value_.Reset();
} else {
FromVarConverter<T> converter(var);
FromVarConverterBase<Optional<T> >::value_ = converter.value();
}
}
};
template <>
class FromVarConverter<std::string> : public FromVarConverterBase<std::string> {
public:
FromVarConverter() {
}
FromVarConverter(const PP_Var& var) {
Set(var);
}
~FromVarConverter() {
}
void Set(const PP_Var& var) {
FromVarConverterBase<std::string>::value_ = Var(var).AsString();
}
};
template <>
class FromVarConverter<double> : public FromVarConverterBase<double> {
public:
FromVarConverter() {
}
FromVarConverter(const PP_Var& var) {
Set(var);
}
~FromVarConverter() {
}
void Set(const PP_Var& var) {
FromVarConverterBase<double>::value_ = Var(var).AsDouble();
}
};
} // namespace internal
} // namespace ext
} // namespace pp
#endif // PPAPI_CPP_EXTENSIONS_FROM_VAR_CONVERTOR_H_
|
