[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 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); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 22 | static bool FromV8(v8::Isolate* isolate, |
| 23 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 24 | bool* out); |
| 25 | }; |
| 26 | |
| 27 | template<> |
| 28 | struct Converter<int32_t> { |
| 29 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 30 | int32_t val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 31 | static bool FromV8(v8::Isolate* isolate, |
| 32 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 33 | int32_t* out); |
| 34 | }; |
| 35 | |
| 36 | template<> |
| 37 | struct Converter<uint32_t> { |
| 38 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 39 | uint32_t val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 40 | static bool FromV8(v8::Isolate* isolate, |
| 41 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 42 | uint32_t* out); |
| 43 | }; |
| 44 | |
| 45 | template<> |
[email protected] | e87f312 | 2013-11-12 00:41:27 | [diff] [blame] | 46 | struct Converter<int64_t> { |
| 47 | // Warning: JavaScript cannot represent 64 integers precisely. |
| 48 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 49 | int64_t val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 50 | static bool FromV8(v8::Isolate* isolate, |
| 51 | v8::Handle<v8::Value> val, |
[email protected] | e87f312 | 2013-11-12 00:41:27 | [diff] [blame] | 52 | int64_t* out); |
| 53 | }; |
| 54 | |
| 55 | template<> |
| 56 | struct Converter<uint64_t> { |
| 57 | // Warning: JavaScript cannot represent 64 integers precisely. |
| 58 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 59 | uint64_t val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 60 | static bool FromV8(v8::Isolate* isolate, |
| 61 | v8::Handle<v8::Value> val, |
[email protected] | e87f312 | 2013-11-12 00:41:27 | [diff] [blame] | 62 | uint64_t* out); |
| 63 | }; |
| 64 | |
| 65 | template<> |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 66 | struct Converter<double> { |
| 67 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 68 | double val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 69 | static bool FromV8(v8::Isolate* isolate, |
| 70 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 71 | double* out); |
| 72 | }; |
| 73 | |
| 74 | template<> |
| 75 | struct Converter<std::string> { |
| 76 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 77 | const std::string& val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 78 | static bool FromV8(v8::Isolate* isolate, |
| 79 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 80 | std::string* out); |
| 81 | }; |
| 82 | |
| 83 | template<> |
| 84 | struct Converter<v8::Handle<v8::Function> > { |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 85 | static bool FromV8(v8::Isolate* isolate, |
| 86 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 87 | v8::Handle<v8::Function>* out); |
| 88 | }; |
| 89 | |
| 90 | template<> |
| 91 | struct Converter<v8::Handle<v8::Object> > { |
[email protected] | e87f312 | 2013-11-12 00:41:27 | [diff] [blame] | 92 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 93 | v8::Handle<v8::Object> val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 94 | static bool FromV8(v8::Isolate* isolate, |
| 95 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 96 | v8::Handle<v8::Object>* out); |
| 97 | }; |
| 98 | |
[email protected] | 97f21ca | 2013-11-17 17:46:07 | [diff] [blame] | 99 | template<> |
[email protected] | ec95fdf | 2013-11-24 19:10:11 | [diff] [blame] | 100 | struct Converter<v8::Handle<v8::ArrayBuffer> > { |
| 101 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 102 | v8::Handle<v8::ArrayBuffer> val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 103 | static bool FromV8(v8::Isolate* isolate, |
| 104 | v8::Handle<v8::Value> val, |
[email protected] | ec95fdf | 2013-11-24 19:10:11 | [diff] [blame] | 105 | v8::Handle<v8::ArrayBuffer>* out); |
| 106 | }; |
| 107 | |
| 108 | template<> |
[email protected] | 97f21ca | 2013-11-17 17:46:07 | [diff] [blame] | 109 | struct Converter<v8::Handle<v8::External> > { |
| 110 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 111 | v8::Handle<v8::External> val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 112 | static bool FromV8(v8::Isolate* isolate, |
| 113 | v8::Handle<v8::Value> val, |
[email protected] | 97f21ca | 2013-11-17 17:46:07 | [diff] [blame] | 114 | v8::Handle<v8::External>* out); |
| 115 | }; |
| 116 | |
| 117 | template<> |
| 118 | struct Converter<v8::Handle<v8::Value> > { |
| 119 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 120 | v8::Handle<v8::Value> val); |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 121 | static bool FromV8(v8::Isolate* isolate, |
| 122 | v8::Handle<v8::Value> val, |
[email protected] | 97f21ca | 2013-11-17 17:46:07 | [diff] [blame] | 123 | v8::Handle<v8::Value>* out); |
| 124 | }; |
| 125 | |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 126 | template<typename T> |
| 127 | struct Converter<std::vector<T> > { |
| 128 | static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate, |
| 129 | const std::vector<T>& val) { |
[email protected] | 91cd4fe | 2013-11-28 09:31:58 | [diff] [blame] | 130 | v8::Handle<v8::Array> result( |
| 131 | v8::Array::New(isolate, static_cast<int>(val.size()))); |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 132 | for (size_t i = 0; i < val.size(); ++i) { |
| 133 | result->Set(static_cast<int>(i), Converter<T>::ToV8(isolate, val[i])); |
| 134 | } |
| 135 | return result; |
| 136 | } |
| 137 | |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 138 | static bool FromV8(v8::Isolate* isolate, |
| 139 | v8::Handle<v8::Value> val, |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 140 | std::vector<T>* out) { |
| 141 | if (!val->IsArray()) |
| 142 | return false; |
| 143 | |
| 144 | std::vector<T> result; |
| 145 | v8::Handle<v8::Array> array(v8::Handle<v8::Array>::Cast(val)); |
| 146 | uint32_t length = array->Length(); |
| 147 | for (uint32_t i = 0; i < length; ++i) { |
| 148 | T item; |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 149 | if (!Converter<T>::FromV8(isolate, array->Get(i), &item)) |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 150 | return false; |
| 151 | result.push_back(item); |
| 152 | } |
| 153 | |
| 154 | out->swap(result); |
| 155 | return true; |
| 156 | } |
| 157 | }; |
| 158 | |
| 159 | // Convenience functions that deduce T. |
| 160 | template<typename T> |
| 161 | v8::Handle<v8::Value> ConvertToV8(v8::Isolate* isolate, |
| 162 | T input) { |
| 163 | return Converter<T>::ToV8(isolate, input); |
| 164 | } |
| 165 | |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 166 | inline v8::Handle<v8::String> StringToV8(v8::Isolate* isolate, |
| 167 | std::string input) { |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 168 | return ConvertToV8(isolate, input).As<v8::String>(); |
| 169 | } |
| 170 | |
[email protected] | e87f312 | 2013-11-12 00:41:27 | [diff] [blame] | 171 | v8::Handle<v8::String> StringToSymbol(v8::Isolate* isolate, |
| 172 | const std::string& val); |
| 173 | |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 174 | template<typename T> |
[email protected] | 7618ebbb | 2013-11-27 03:38:26 | [diff] [blame] | 175 | bool ConvertFromV8(v8::Isolate* isolate, v8::Handle<v8::Value> input, |
| 176 | T* result) { |
| 177 | return Converter<T>::FromV8(isolate, input, result); |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 178 | } |
| 179 | |
[email protected] | 2f70342 | 2013-11-25 21:26:15 | [diff] [blame] | 180 | std::string V8ToString(v8::Handle<v8::Value> value); |
| 181 | |
[email protected] | a22998a | 2013-11-10 05:00:50 | [diff] [blame] | 182 | } // namespace gin |
| 183 | |
| 184 | #endif // GIN_CONVERTER_H_ |