JSDOMConvertStrings.h   [plain text]

/*
 * Copyright (C) 2016-2019 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#pragma once

#include "IDLTypes.h"
#include "JSDOMConvertBase.h"
#include "StringAdaptors.h"

namespace WebCore {

WEBCORE_EXPORT String identifierToByteString(JSC::JSGlobalObject&, const JSC::Identifier&);
WEBCORE_EXPORT String valueToByteString(JSC::JSGlobalObject&, JSC::JSValue);
WEBCORE_EXPORT String identifierToUSVString(JSC::JSGlobalObject&, const JSC::Identifier&);
WEBCORE_EXPORT String valueToUSVString(JSC::JSGlobalObject&, JSC::JSValue);

inline String propertyNameToString(JSC::PropertyName propertyName)
{
    ASSERT(!propertyName.isSymbol());
    return propertyName.uid() ? propertyName.uid() : propertyName.publicName();
}

inline AtomString propertyNameToAtomString(JSC::PropertyName propertyName)
{
    return AtomString(propertyName.uid() ? propertyName.uid() : propertyName.publicName());
}

// MARK: -
// MARK: String types

template<> struct Converter<IDLDOMString> : DefaultConverter<IDLDOMString> {
    static String convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        return value.toWTFString(&lexicalGlobalObject);
    }
};

template<> struct JSConverter<IDLDOMString> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const String& value)
    {
        return JSC::jsStringWithCache(&lexicalGlobalObject, value);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const UncachedString& value)
    {
        return JSC::jsString(JSC::getVM(&lexicalGlobalObject), value.string);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const OwnedString& value)
    {
        return JSC::jsOwnedString(JSC::getVM(&lexicalGlobalObject), value.string);
    }
};

template<> struct Converter<IDLByteString> : DefaultConverter<IDLByteString> {
    static String convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        return valueToByteString(lexicalGlobalObject, value);
    }
};

template<> struct JSConverter<IDLByteString> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const String& value)
    {
        return JSC::jsStringWithCache(&lexicalGlobalObject, value);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const UncachedString& value)
    {
        return JSC::jsString(JSC::getVM(&lexicalGlobalObject), value.string);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const OwnedString& value)
    {
        return JSC::jsOwnedString(JSC::getVM(&lexicalGlobalObject), value.string);
    }
};

template<> struct Converter<IDLUSVString> : DefaultConverter<IDLUSVString> {
    static String convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        return valueToUSVString(lexicalGlobalObject, value);
    }
};

template<> struct JSConverter<IDLUSVString> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const String& value)
    {
        return JSC::jsStringWithCache(&lexicalGlobalObject, value);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const UncachedString& value)
    {
        return JSC::jsString(JSC::getVM(&lexicalGlobalObject), value.string);
    }

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const OwnedString& value)
    {
        return JSC::jsOwnedString(JSC::getVM(&lexicalGlobalObject), value.string);
    }
};

// MARK: -
// MARK: String type adaptors

template<typename T> struct Converter<IDLTreatNullAsEmptyAdaptor<T>> : DefaultConverter<IDLTreatNullAsEmptyAdaptor<T>> {
    static String convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        if (value.isNull())
            return emptyString();
        return Converter<T>::convert(lexicalGlobalObject, value);
    }
};

template<typename T>  struct JSConverter<IDLTreatNullAsEmptyAdaptor<T>> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const String& value)
    {
        return JSConverter<T>::convert(lexicalGlobalObject, value);
    }
};

template<typename T> struct Converter<IDLAtomStringAdaptor<T>> : DefaultConverter<IDLAtomStringAdaptor<T>> {
    static AtomString convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        static_assert(std::is_same<T, IDLDOMString>::value, "This adaptor is only supported for IDLDOMString at the moment.");

        return value.toString(&lexicalGlobalObject)->toAtomString(&lexicalGlobalObject);
    }
};

template<typename T>  struct JSConverter<IDLAtomStringAdaptor<T>> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const AtomString& value)
    {
        static_assert(std::is_same<T, IDLDOMString>::value, "This adaptor is only supported for IDLDOMString at the moment.");

        return JSConverter<T>::convert(lexicalGlobalObject, value);
    }
};

template<typename T> struct Converter<IDLRequiresExistingAtomStringAdaptor<T>> : DefaultConverter<IDLRequiresExistingAtomStringAdaptor<T>> {
    static AtomString convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
    {
        static_assert(std::is_same<T, IDLDOMString>::value, "This adaptor is only supported for IDLDOMString at the moment.");
    
        return AtomString(value.toString(&lexicalGlobalObject)->toExistingAtomString(&lexicalGlobalObject));
    }
};

template<typename T>  struct JSConverter<IDLRequiresExistingAtomStringAdaptor<T>> {
    static constexpr bool needsState = true;
    static constexpr bool needsGlobalObject = false;

    static JSC::JSValue convert(JSC::JSGlobalObject& lexicalGlobalObject, const AtomString& value)
    {
        static_assert(std::is_same<T, IDLDOMString>::value, "This adaptor is only supported for IDLDOMString at the moment.");

        return JSConverter<T>::convert(lexicalGlobalObject, value);
    }
};


} // namespace WebCore