コード例 #1
0
Optional<ScriptElement::ScriptType> ScriptElement::determineScriptType(LegacyTypeSupport supportLegacyTypes) const
{
    // FIXME: isLegacySupportedJavaScriptLanguage() is not valid HTML5. It is used here to maintain backwards compatibility with existing layout tests. The specific violations are:
    // - Allowing type=javascript. type= should only support MIME types, such as text/javascript.
    // - Allowing a different set of languages for language= and type=. language= supports Javascript 1.1 and 1.4-1.6, but type= does not.
    String type = typeAttributeValue();
    String language = languageAttributeValue();
    if (type.isEmpty()) {
        if (language.isEmpty())
            return ScriptType::Classic; // Assume text/javascript.
        if (MIMETypeRegistry::isSupportedJavaScriptMIMEType("text/" + language))
            return ScriptType::Classic;
        if (isLegacySupportedJavaScriptLanguage(language))
            return ScriptType::Classic;
        return Nullopt;
    }
    if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type.stripWhiteSpace()))
        return ScriptType::Classic;
    if (supportLegacyTypes == AllowLegacyTypeInTypeAttribute && isLegacySupportedJavaScriptLanguage(type))
        return ScriptType::Classic;
#if ENABLE(ES6_MODULES)
    // https://html.spec.whatwg.org/multipage/scripting.html#attr-script-type
    // Setting the attribute to an ASCII case-insensitive match for the string "module" means that the script is a module script.
    if (equalLettersIgnoringASCIICase(type, "module"))
        return ScriptType::Module;
#endif
    return Nullopt;
}
コード例 #2
0
ファイル: ScriptElement.cpp プロジェクト: Spencerx/webkit
bool ScriptElement::isScriptTypeSupported(LegacyTypeSupport supportLegacyTypes) const
{
    // FIXME: isLegacySupportedJavaScriptLanguage() is not valid HTML5. It is used here to maintain backwards compatibility with existing layout tests. The specific violations are:
    // - Allowing type=javascript. type= should only support MIME types, such as text/javascript.
    // - Allowing a different set of languages for language= and type=. language= supports Javascript 1.1 and 1.4-1.6, but type= does not.

    String type = typeAttributeValue();
    String language = languageAttributeValue();
    if (type.isEmpty() && language.isEmpty())
        return true; // Assume text/javascript.
    if (type.isEmpty()) {
        type = "text/" + language.lower();
        if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type) || isLegacySupportedJavaScriptLanguage(language))
            return true;
    } else if (MIMETypeRegistry::isSupportedJavaScriptMIMEType(type.stripWhiteSpace().lower()) || (supportLegacyTypes == AllowLegacyTypeInTypeAttribute && isLegacySupportedJavaScriptLanguage(type)))
        return true;
    return false;
}