Source/WebCore/bindings/js/JSXMLHttpRequestCustom.cpp

/*
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 *
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 * 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.
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 *     notice, this list of conditions and the following disclaimer in the
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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#include "config.h"
#include "JSXMLHttpRequest.h"

#include "JSBlob.h"
#include "JSDOMConvertBufferSource.h"
#include "JSDOMConvertInterface.h"
#include "JSDOMConvertJSON.h"
#include "JSDOMConvertNullable.h"
#include "JSDOMConvertStrings.h"
#include "JSDocument.h"


namespace WebCore {
using namespace JSC;

template<typename Visitor>
void JSXMLHttpRequest::visitAdditionalChildren(Visitor& visitor)
{
    if (auto* upload = wrapped().optionalUpload())
        visitor.addOpaqueRoot(upload);

    if (auto* responseDocument = wrapped().optionalResponseXML())
        visitor.addOpaqueRoot(responseDocument);
}

DEFINE_VISIT_ADDITIONAL_CHILDREN(JSXMLHttpRequest);

JSValue JSXMLHttpRequest::response(JSGlobalObject& lexicalGlobalObject) const
{
    auto cacheResult = [&] (JSValue value) -> JSValue {
        m_response.set(lexicalGlobalObject.vm(), this, value);
        return value;
    };


    if (wrapped().responseCacheIsValid())
        return m_response.get();

    auto type = wrapped().responseType();

    switch (type) {
    case XMLHttpRequest::ResponseType::EmptyString:
    case XMLHttpRequest::ResponseType::Text: {
        auto scope = DECLARE_THROW_SCOPE(lexicalGlobalObject.vm());
        return cacheResult(toJS<IDLNullable<IDLUSVString>>(lexicalGlobalObject, scope, wrapped().responseText()));
    }
    default:
        break;
    }

    if (!wrapped().doneWithoutErrors())
        return cacheResult(jsNull());

    JSValue value;
    switch (type) {
    case XMLHttpRequest::ResponseType::EmptyString:
    case XMLHttpRequest::ResponseType::Text:
        ASSERT_NOT_REACHED();
        return jsUndefined();

    case XMLHttpRequest::ResponseType::Json:
        value = toJS<IDLJSON>(*globalObject(), wrapped().responseTextIgnoringResponseType());
        if (!value)
            value = jsNull();
        break;

    case XMLHttpRequest::ResponseType::Document: {
        auto document = wrapped().responseXML();
        ASSERT(!document.hasException());
        value = toJS<IDLInterface<Document>>(lexicalGlobalObject, *globalObject(), document.releaseReturnValue());
        break;
    }

    case XMLHttpRequest::ResponseType::Blob:
        value = toJSNewlyCreated<IDLInterface<Blob>>(lexicalGlobalObject, *globalObject(), wrapped().createResponseBlob());
        break;

    case XMLHttpRequest::ResponseType::Arraybuffer:
        value = toJS<IDLInterface<ArrayBuffer>>(lexicalGlobalObject, *globalObject(), wrapped().createResponseArrayBuffer());
        break;
    }

    wrapped().didCacheResponse();
    return cacheResult(value);
}

} // namespace WebCore