blob: 1461dc8690f2c5c539cacaac958ba116ccf7bc8b (
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
|
// 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_ARGUMENTS_H_
#define GIN_ARGUMENTS_H_
#include "base/basictypes.h"
#include "gin/converter.h"
namespace gin {
// Arguments is a wrapper around v8::FunctionCallbackInfo that integrates
// with Converter to make it easier to marshall arguments and return values
// between V8 and C++.
class Arguments {
public:
Arguments();
explicit Arguments(const v8::FunctionCallbackInfo<v8::Value>& info);
~Arguments();
template<typename T>
bool GetHolder(T* out) {
return ConvertFromV8(isolate_, info_->Holder(), out);
}
template<typename T>
bool GetData(T* out) {
return ConvertFromV8(isolate_, info_->Data(), out);
}
template<typename T>
bool GetNext(T* out) {
if (next_ >= info_->Length()) {
insufficient_arguments_ = true;
return false;
}
v8::Handle<v8::Value> val = (*info_)[next_++];
return ConvertFromV8(isolate_, val, out);
}
template<typename T>
bool GetRemaining(std::vector<T>* out) {
if (next_ >= info_->Length()) {
insufficient_arguments_ = true;
return false;
}
int remaining = info_->Length() - next_;
out->resize(remaining);
for (int i = 0; i < remaining; ++i) {
v8::Handle<v8::Value> val = (*info_)[next_++];
if (!ConvertFromV8(isolate_, val, &out->at(i)))
return false;
}
return true;
}
template<typename T>
void Return(T val) {
info_->GetReturnValue().Set(ConvertToV8(isolate_, val));
}
v8::Handle<v8::Value> PeekNext();
void ThrowError();
void ThrowTypeError(const std::string& message);
v8::Isolate* isolate() const { return isolate_; }
private:
v8::Isolate* isolate_;
const v8::FunctionCallbackInfo<v8::Value>* info_;
int next_;
bool insufficient_arguments_;
};
} // namespace gin
#endif // GIN_ARGUMENTS_H_
|