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chakrashim: correct Template properties support
Template (ObjectTemplate, FunctionTemplate) properties can be Templates. When creating Template instances, Template properties need to be replaced with corresponding Template instantiations. `nodejs/master` starts to depend on this feature.
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Jianchun Xu
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Apr 26, 2016
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| // Copyright Microsoft. All rights reserved. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files(the "Software"), to | ||
| // deal in the Software without restriction, including without limitation the | ||
| // rights to use, copy, modify, merge, publish, distribute, sublicense, and / or | ||
| // sell copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions : | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | ||
| // IN THE SOFTWARE. | ||
|
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| #include "v8chakra.h" | ||
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| namespace v8 { | ||
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| using jsrt::IsolateShim; | ||
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| Object* TemplateData::EnsureProperties() { | ||
| if (properties.IsEmpty()) { | ||
| properties = Object::New(); | ||
| } | ||
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| return *properties; | ||
| } | ||
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| bool TemplateData::Is(ExternalData* data) { | ||
| return data->GetType() == ExternalDataTypes::ObjectTemplateData | ||
| || data->GetType() == ExternalDataTypes::FunctionTemplateData; | ||
| } | ||
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| // Clone the template properties into the new instance | ||
| JsErrorCode TemplateData::CopyPropertiesTo(JsValueRef newInstance) { | ||
| if (properties.IsEmpty()) { | ||
| return JsNoError; | ||
| } | ||
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| JsValueRef propertiesRef = *properties; | ||
| JsValueRef propertyNames; | ||
| IfJsErrorRet(JsGetOwnPropertyNames(propertiesRef, &propertyNames)); | ||
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| unsigned int length; | ||
| IfJsErrorRet(jsrt::GetArrayLength(propertyNames, &length)); | ||
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| JsPropertyIdRef valueIdRef; | ||
| if (length > 0) { | ||
| valueIdRef = IsolateShim::GetCurrent()->GetCachedPropertyIdRef( | ||
| jsrt::CachedPropertyIdRef::value); | ||
| } | ||
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| for (unsigned int index = 0; index < length; index++) { | ||
| JsValueRef indexValue; | ||
| IfJsErrorRet(JsIntToNumber(index, &indexValue)); | ||
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| JsValueRef propertyNameValue; | ||
| IfJsErrorRet(JsGetIndexedProperty(propertyNames, indexValue, | ||
| &propertyNameValue)); | ||
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| const wchar_t *propertyName; | ||
| size_t propertyNameLength; | ||
| IfJsErrorRet(JsStringToPointer(propertyNameValue, | ||
| &propertyName, &propertyNameLength)); | ||
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| JsPropertyIdRef propertyId; | ||
| IfJsErrorRet(JsGetPropertyIdFromName(propertyName, &propertyId)); | ||
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| JsValueRef propertyDescriptor; | ||
| IfJsErrorRet(JsGetOwnPropertyDescriptor(propertiesRef, propertyId, | ||
| &propertyDescriptor)); | ||
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| // If it is a Template, try create an instance | ||
| JsValueRef value; | ||
| IfJsErrorRet(JsGetProperty(propertyDescriptor, valueIdRef, &value)); | ||
| ExternalData* data = nullptr; | ||
| if (ExternalData::TryGet(value, &data) && TemplateData::Is(data)) { | ||
| TemplateData* templateData = static_cast<TemplateData*>(data); | ||
| value = templateData->NewInstance(value); | ||
| if (value == JS_INVALID_REFERENCE) { | ||
| return JsErrorFatal; // Just to indicate failed | ||
| } | ||
| IfJsErrorRet(JsSetProperty(propertyDescriptor, valueIdRef, value, false)); | ||
| } | ||
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| bool result; | ||
| IfJsErrorRet(JsDefineProperty(newInstance, propertyId, propertyDescriptor, | ||
| &result)); | ||
| } | ||
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| return JsNoError; | ||
| } | ||
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| } // namespace v8 |
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