StdDeserializer.h

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/* Copyright (C) 2021 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef INCLUDED_STDDESERIALIZER
#define INCLUDED_STDDESERIALIZER

#include "IDeserializer.h"

#include <string>
#include <vector>

class CStdDeserializer : public IDeserializer
{
    NONCOPYABLE(CStdDeserializer);
public:
    CStdDeserializer(const ScriptInterface& scriptInterface, std::istream& stream);
    virtual ~CStdDeserializer();

    virtual void ScriptVal(const char* name, JS::MutableHandleValue out);
    virtual void ScriptObjectAssign(const char* name, JS::HandleValue objVal);
    virtual void ScriptString(const char* name, JS::MutableHandleString out);

    virtual std::istream& GetStream();
    virtual void RequireBytesInStream(size_t numBytes);

    static void Trace(JSTracer *trc, void *data);

    void TraceMember(JSTracer *trc);

protected:
    virtual void Get(const char* name, u8* data, size_t len);

private:
    JS::Value ReadScriptVal(const char* name, JS::HandleObject preexistingObject);
    void ReadStringLatin1(const char* name, std::vector<JS::Latin1Char>& str);
    void ReadStringUTF16(const char* name, std::u16string& str);

    virtual void AddScriptBackref(JS::HandleObject obj);
    virtual void GetScriptBackref(size_t tag, JS::MutableHandleObject ret);
    std::vector<JS::Heap<JSObject*> > m_ScriptBackrefs;

    const ScriptInterface& m_ScriptInterface;

    std::istream& m_Stream;
};

#endif // INCLUDED_STDDESERIALIZER