OLD | NEW |
(Empty) | |
| 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef GIN_CONVERTER_H_ |
| 6 #define GIN_CONVERTER_H_ |
| 7 |
| 8 #include <string> |
| 9 #include <vector> |
| 10 |
| 11 #include "v8/include/v8.h" |
| 12 |
| 13 namespace gin { |
| 14 |
| 15 template<typename T> |
| 16 struct Converter {}; |
| 17 |
| 18 template<> |
| 19 struct Converter<bool> { |
| 20 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 21 bool val); |
| 22 static bool FromV8(v8::Handle<v8::Value> val, |
| 23 bool* out); |
| 24 }; |
| 25 |
| 26 template<> |
| 27 struct Converter<int32_t> { |
| 28 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 29 int32_t val); |
| 30 static bool FromV8(v8::Handle<v8::Value> val, |
| 31 int32_t* out); |
| 32 }; |
| 33 |
| 34 template<> |
| 35 struct Converter<uint32_t> { |
| 36 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 37 uint32_t val); |
| 38 static bool FromV8(v8::Handle<v8::Value> val, |
| 39 uint32_t* out); |
| 40 }; |
| 41 |
| 42 template<> |
| 43 struct Converter<double> { |
| 44 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 45 double val); |
| 46 static bool FromV8(v8::Handle<v8::Value> val, |
| 47 double* out); |
| 48 }; |
| 49 |
| 50 template<> |
| 51 struct Converter<std::string> { |
| 52 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 53 const std::string& val); |
| 54 static bool FromV8(v8::Handle<v8::Value> val, |
| 55 std::string* out); |
| 56 }; |
| 57 |
| 58 template<> |
| 59 struct Converter<v8::Handle<v8::Function> > { |
| 60 static bool FromV8(v8::Handle<v8::Value> val, |
| 61 v8::Handle<v8::Function>* out); |
| 62 }; |
| 63 |
| 64 template<> |
| 65 struct Converter<v8::Handle<v8::Object> > { |
| 66 static v8::Handle<v8::Value> ToV8(v8::Handle<v8::Object> val); |
| 67 static bool FromV8(v8::Handle<v8::Value> val, |
| 68 v8::Handle<v8::Object>* out); |
| 69 }; |
| 70 |
| 71 template<typename T> |
| 72 struct Converter<std::vector<T> > { |
| 73 static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 74 const std::vector<T>& val) { |
| 75 v8::Handle<v8::Array> result(v8::Array::New(static_cast<int>(val.size()))); |
| 76 for (size_t i = 0; i < val.size(); ++i) { |
| 77 result->Set(static_cast<int>(i), Converter<T>::ToV8(isolate, val[i])); |
| 78 } |
| 79 return result; |
| 80 } |
| 81 |
| 82 static bool FromV8(v8::Handle<v8::Value> val, |
| 83 std::vector<T>* out) { |
| 84 if (!val->IsArray()) |
| 85 return false; |
| 86 |
| 87 std::vector<T> result; |
| 88 v8::Handle<v8::Array> array(v8::Handle<v8::Array>::Cast(val)); |
| 89 uint32_t length = array->Length(); |
| 90 for (uint32_t i = 0; i < length; ++i) { |
| 91 T item; |
| 92 if (!Converter<T>::FromV8(array->Get(i), &item)) |
| 93 return false; |
| 94 result.push_back(item); |
| 95 } |
| 96 |
| 97 out->swap(result); |
| 98 return true; |
| 99 } |
| 100 }; |
| 101 |
| 102 // Convenience functions that deduce T. |
| 103 template<typename T> |
| 104 v8::Handle<v8::Value> ConvertToV8(v8::Isolate* isolate, |
| 105 T input) { |
| 106 return Converter<T>::ToV8(isolate, input); |
| 107 } |
| 108 |
| 109 inline v8::Handle<v8::String> StringToV8( |
| 110 v8::Isolate* isolate, std::string input) { |
| 111 return ConvertToV8(isolate, input).As<v8::String>(); |
| 112 } |
| 113 |
| 114 template<typename T> |
| 115 bool ConvertFromV8(v8::Handle<v8::Value> input, T* result) { |
| 116 return Converter<T>::FromV8(input, result); |
| 117 } |
| 118 |
| 119 } // namespace gin |
| 120 |
| 121 #endif // GIN_CONVERTER_H_ |
OLD | NEW |