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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JSModuleLoader.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "JSDOMBinding.h"
#include <runtime/JSInternalPromiseDeferred.h>
#include <runtime/JSModuleRecord.h>
#include <runtime/JSString.h>
#include <runtime/Symbol.h>
namespace WebCore {
JSModuleLoader::JSModuleLoader(Document& document)
: m_document(document)
{
}
JSC::JSInternalPromise* JSModuleLoader::resolve(JSC::JSGlobalObject* globalObject, JSC::ExecState* exec, JSC::JSValue moduleNameValue, JSC::JSValue importerModuleKey)
{
JSC::JSInternalPromiseDeferred* deferred = JSC::JSInternalPromiseDeferred::create(exec, globalObject);
// We use a Symbol as a special purpose; It means this module is an inline module.
// So there is no correct URL to retrieve the module source code. If the module name
// value is a Symbol, it is used directly as a module key.
//
// FIXME: Using symbols for an inline module is a current implementation details of WebKit.
// Once the spec of this part is specified, we will recast these part.
if (moduleNameValue.isSymbol())
return deferred->resolve(exec, moduleNameValue);
if (!moduleNameValue.isString())
return deferred->reject(exec, JSC::createTypeError(exec, "Module name is not Symbol or String."));
String moduleName = asString(moduleNameValue)->value(exec);
// Now, we consider the given moduleName as the same to the `import "..."` in the module code.
// We use the completed URL as the unique module key.
URL completedUrl;
if (importerModuleKey.isSymbol())
completedUrl = m_document.completeURL(moduleName);
else if (importerModuleKey.isUndefined())
completedUrl = m_document.completeURL(moduleName);
else if (importerModuleKey.isString()) {
URL importerModuleUrl(URL(), asString(importerModuleKey)->value(exec));
if (!importerModuleUrl.isValid())
return deferred->reject(exec, JSC::createTypeError(exec, "Importer module key is an invalid URL."));
completedUrl = m_document.completeURL(moduleName, importerModuleUrl);
} else
return deferred->reject(exec, JSC::createTypeError(exec, "Importer module key is not Symbol or String."));
if (!completedUrl.isValid())
return deferred->reject(exec, JSC::createTypeError(exec, "Module name constructs an invalid URL."));
return deferred->resolve(exec, jsString(exec, completedUrl.string()));
}
JSC::JSInternalPromise* JSModuleLoader::fetch(JSC::JSGlobalObject* globalObject, JSC::ExecState* exec, JSC::JSValue moduleKeyValue)
{
JSC::JSInternalPromiseDeferred* deferred = JSC::JSInternalPromiseDeferred::create(exec, globalObject);
if (moduleKeyValue.isSymbol())
return deferred->reject(exec, JSC::createTypeError(exec, "Symbol module key should be already fulfilled with the inlined resource."));
if (!moduleKeyValue.isString())
return deferred->reject(exec, JSC::createTypeError(exec, "Module key is not Symbol or String."));
URL completedUrl(URL(), asString(moduleKeyValue)->value(exec));
if (!completedUrl.isValid())
return deferred->reject(exec, JSC::createTypeError(exec, "Module key is an invalid URL."));
// FIXME: Implement the module fetcher.
return deferred->promise();
}
JSC::JSValue JSModuleLoader::evaluate(JSC::JSGlobalObject*, JSC::ExecState* exec, JSC::JSValue moduleKeyValue, JSC::JSValue moduleRecordValue)
{
// FIXME: Currently, we only support JSModuleRecord.
// Once the reflective part of the module loader is supported, we will handle arbitrary values.
// https://whatwg.github.io/loader/#registry-prototype-provide
JSC::JSModuleRecord* moduleRecord = JSC::jsDynamicCast<JSC::JSModuleRecord*>(moduleRecordValue);
if (!moduleRecord)
return JSC::jsUndefined();
URL sourceUrl;
if (moduleKeyValue.isSymbol())
sourceUrl = m_document.url();
else if (moduleKeyValue.isString())
sourceUrl = URL(URL(), asString(moduleKeyValue)->value(exec));
else
return JSC::throwTypeError(exec, "Module key is not Symbol or String.");
if (!sourceUrl.isValid())
return JSC::throwTypeError(exec, "Module key is an invalid URL.");
// FIXME: Implement evaluating module code.
return JSC::jsUndefined();
}
}
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