Source/JavaScriptCore/wasm/WASMModuleParser.h

/*
 * Copyright (C) 2016 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. ``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
 * 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.
 */

#pragma once

#if ENABLE(WEBASSEMBLY)

#include "WASMOps.h"
#include "WASMParser.h"
#include <wtf/Vector.h>

namespace JSC { namespace WASM {

class ModuleParser : public Parser {
public:

    static const unsigned magicNumber = 0xc;

    ModuleParser(const Vector<uint8_t>& sourceBuffer)
        : Parser(sourceBuffer, 0, sourceBuffer.size())
    {
    }

    bool WARN_UNUSED_RETURN parse();

    const Vector<FunctionInformation>& functionInformation() { return m_functions; }

private:
    bool WARN_UNUSED_RETURN parseFunctionTypes();
    bool WARN_UNUSED_RETURN parseFunctionSignatures();
    bool WARN_UNUSED_RETURN parseFunctionDefinitions();
    bool WARN_UNUSED_RETURN parseFunctionDefinition(uint32_t number);
    bool WARN_UNUSED_RETURN parseBlock();
    bool WARN_UNUSED_RETURN parseExpression(OpType);

    Vector<FunctionInformation> m_functions;
    Vector<Signature> m_signatures;
};

} } // namespace JSC::WASM

#endif // ENABLE(WEBASSEMBLY)