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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 68 } else { | 68 } else { |
| 69 ASSERT(strcmp(*v8::String::Utf8Value(str), "isAsciiString") == 0); | 69 ASSERT(strcmp(*v8::String::Utf8Value(str), "isAsciiString") == 0); |
| 70 return v8::FunctionTemplate::New(ExternalizeStringExtension::IsAscii); | 70 return v8::FunctionTemplate::New(ExternalizeStringExtension::IsAscii); |
| 71 } | 71 } |
| 72 } | 72 } |
| 73 | 73 |
| 74 | 74 |
| 75 void ExternalizeStringExtension::Externalize( | 75 void ExternalizeStringExtension::Externalize( |
| 76 const v8::FunctionCallbackInfo<v8::Value>& args) { | 76 const v8::FunctionCallbackInfo<v8::Value>& args) { |
| 77 if (args.Length() < 1 || !args[0]->IsString()) { | 77 if (args.Length() < 1 || !args[0]->IsString()) { |
| 78 v8::ThrowException(v8::String::New( | 78 args.GetIsolate()->ThrowException(v8::String::New( |
| 79 "First parameter to externalizeString() must be a string.")); | 79 "First parameter to externalizeString() must be a string.")); |
| 80 return; | 80 return; |
| 81 } | 81 } |
| 82 bool force_two_byte = false; | 82 bool force_two_byte = false; |
| 83 if (args.Length() >= 2) { | 83 if (args.Length() >= 2) { |
| 84 if (args[1]->IsBoolean()) { | 84 if (args[1]->IsBoolean()) { |
| 85 force_two_byte = args[1]->BooleanValue(); | 85 force_two_byte = args[1]->BooleanValue(); |
| 86 } else { | 86 } else { |
| 87 v8::ThrowException(v8::String::New( | 87 args.GetIsolate()->ThrowException(v8::String::New( |
| 88 "Second parameter to externalizeString() must be a boolean.")); | 88 "Second parameter to externalizeString() must be a boolean.")); |
| 89 return; | 89 return; |
| 90 } | 90 } |
| 91 } | 91 } |
| 92 bool result = false; | 92 bool result = false; |
| 93 Handle<String> string = Utils::OpenHandle(*args[0].As<v8::String>()); | 93 Handle<String> string = Utils::OpenHandle(*args[0].As<v8::String>()); |
| 94 if (string->IsExternalString()) { | 94 if (string->IsExternalString()) { |
| 95 v8::ThrowException(v8::String::New( | 95 args.GetIsolate()->ThrowException(v8::String::New( |
| 96 "externalizeString() can't externalize twice.")); | 96 "externalizeString() can't externalize twice.")); |
| 97 return; | 97 return; |
| 98 } | 98 } |
| 99 if (string->IsOneByteRepresentation() && !force_two_byte) { | 99 if (string->IsOneByteRepresentation() && !force_two_byte) { |
| 100 uint8_t* data = new uint8_t[string->length()]; | 100 uint8_t* data = new uint8_t[string->length()]; |
| 101 String::WriteToFlat(*string, data, 0, string->length()); | 101 String::WriteToFlat(*string, data, 0, string->length()); |
| 102 SimpleAsciiStringResource* resource = new SimpleAsciiStringResource( | 102 SimpleAsciiStringResource* resource = new SimpleAsciiStringResource( |
| 103 reinterpret_cast<char*>(data), string->length()); | 103 reinterpret_cast<char*>(data), string->length()); |
| 104 result = string->MakeExternal(resource); | 104 result = string->MakeExternal(resource); |
| 105 if (result && !string->IsInternalizedString()) { | 105 if (result && !string->IsInternalizedString()) { |
| 106 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate()); | 106 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate()); |
| 107 isolate->heap()->external_string_table()->AddString(*string); | 107 isolate->heap()->external_string_table()->AddString(*string); |
| 108 } | 108 } |
| 109 if (!result) delete resource; | 109 if (!result) delete resource; |
| 110 } else { | 110 } else { |
| 111 uc16* data = new uc16[string->length()]; | 111 uc16* data = new uc16[string->length()]; |
| 112 String::WriteToFlat(*string, data, 0, string->length()); | 112 String::WriteToFlat(*string, data, 0, string->length()); |
| 113 SimpleTwoByteStringResource* resource = new SimpleTwoByteStringResource( | 113 SimpleTwoByteStringResource* resource = new SimpleTwoByteStringResource( |
| 114 data, string->length()); | 114 data, string->length()); |
| 115 result = string->MakeExternal(resource); | 115 result = string->MakeExternal(resource); |
| 116 if (result && !string->IsInternalizedString()) { | 116 if (result && !string->IsInternalizedString()) { |
| 117 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate()); | 117 i::Isolate* isolate = reinterpret_cast<i::Isolate*>(args.GetIsolate()); |
| 118 isolate->heap()->external_string_table()->AddString(*string); | 118 isolate->heap()->external_string_table()->AddString(*string); |
| 119 } | 119 } |
| 120 if (!result) delete resource; | 120 if (!result) delete resource; |
| 121 } | 121 } |
| 122 if (!result) { | 122 if (!result) { |
| 123 v8::ThrowException(v8::String::New("externalizeString() failed.")); | 123 args.GetIsolate()->ThrowException( |
| 124 v8::String::New("externalizeString() failed.")); |
| 124 return; | 125 return; |
| 125 } | 126 } |
| 126 } | 127 } |
| 127 | 128 |
| 128 | 129 |
| 129 void ExternalizeStringExtension::IsAscii( | 130 void ExternalizeStringExtension::IsAscii( |
| 130 const v8::FunctionCallbackInfo<v8::Value>& args) { | 131 const v8::FunctionCallbackInfo<v8::Value>& args) { |
| 131 if (args.Length() != 1 || !args[0]->IsString()) { | 132 if (args.Length() != 1 || !args[0]->IsString()) { |
| 132 v8::ThrowException(v8::String::New( | 133 args.GetIsolate()->ThrowException(v8::String::New( |
| 133 "isAsciiString() requires a single string argument.")); | 134 "isAsciiString() requires a single string argument.")); |
| 134 return; | 135 return; |
| 135 } | 136 } |
| 136 bool is_one_byte = | 137 bool is_one_byte = |
| 137 Utils::OpenHandle(*args[0].As<v8::String>())->IsOneByteRepresentation(); | 138 Utils::OpenHandle(*args[0].As<v8::String>())->IsOneByteRepresentation(); |
| 138 args.GetReturnValue().Set(is_one_byte); | 139 args.GetReturnValue().Set(is_one_byte); |
| 139 } | 140 } |
| 140 | 141 |
| 141 | 142 |
| 142 void ExternalizeStringExtension::Register() { | 143 void ExternalizeStringExtension::Register() { |
| 143 static ExternalizeStringExtension externalize_extension; | 144 static ExternalizeStringExtension externalize_extension; |
| 144 static v8::DeclareExtension declaration(&externalize_extension); | 145 static v8::DeclareExtension declaration(&externalize_extension); |
| 145 } | 146 } |
| 146 | 147 |
| 147 } } // namespace v8::internal | 148 } } // namespace v8::internal |
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