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
|
// Copyright 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 GIN_DICTIONARY_H_
#define GIN_DICTIONARY_H_
#include "gin/converter.h"
#include "gin/gin_export.h"
namespace gin {
// Dictionary is useful when writing bindings for a function that either
// receives an arbitrary JavaScript object as an argument or returns an
// arbitrary JavaScript object as a result. For example, Dictionary is useful
// when you might use the |dictionary| type in WebIDL:
//
// http://heycam.github.io/webidl/#idl-dictionaries
//
// WARNING: You cannot retain a Dictionary object in the heap. The underlying
// storage for Dictionary is tied to the closest enclosing
// v8::HandleScope. Generally speaking, you should store a Dictionary
// on the stack.
//
class GIN_EXPORT Dictionary {
public:
explicit Dictionary(v8::Isolate* isolate);
Dictionary(v8::Isolate* isolate, v8::Handle<v8::Object> object);
~Dictionary();
static Dictionary CreateEmpty(v8::Isolate* isolate);
template<typename T>
bool Get(const std::string& key, T* out) {
v8::Handle<v8::Value> val = object_->Get(StringToV8(isolate_, key));
return ConvertFromV8(isolate_, val, out);
}
template<typename T>
bool Set(const std::string& key, T val) {
return object_->Set(StringToV8(isolate_, key), ConvertToV8(isolate_, val));
}
v8::Isolate* isolate() const { return isolate_; }
private:
friend struct Converter<Dictionary>;
// TODO(aa): Remove this. Instead, get via FromV8(), Set(), and Get().
v8::Isolate* isolate_;
v8::Handle<v8::Object> object_;
};
template<>
struct GIN_EXPORT Converter<Dictionary> {
static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
Dictionary val);
static bool FromV8(v8::Isolate* isolate,
v8::Handle<v8::Value> val,
Dictionary* out);
};
} // namespace gin
#endif // GIN_DICTIONARY_H_
|
