StdDeserializer.h

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/* Copyright (C) 2013 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 "ps/utf16string.h"

#include <map>

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

    virtual void ScriptVal(const char* name, jsval& out);
    virtual void ScriptVal(const char* name, CScriptVal& out);
    virtual void ScriptVal(const char* name, CScriptValRooted& out);
    virtual void ScriptObjectAppend(const char* name, jsval& obj);
    virtual void ScriptString(const char* name, JSString*& out);

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

    virtual void SetSerializablePrototypes(std::map<std::wstring, JSObject*>& prototypes);
    
protected:
    virtual void Get(const char* name, u8* data, size_t len);

private:
    jsval ReadScriptVal(const char* name, JSObject* appendParent);
    void ReadStringUTF16(const char* name, utf16string& str);

    virtual void AddScriptBackref(JSObject* obj);
    virtual JSObject* GetScriptBackref(u32 tag);
    virtual u32 ReserveScriptBackref();
    virtual void SetReservedScriptBackref(u32 tag, JSObject* obj);
    void FreeScriptBackrefs();
    std::map<u32, JSObject*> m_ScriptBackrefs; // vector would be nice but maintaining JS roots would be harder
    ScriptInterface& m_ScriptInterface;

    std::istream& m_Stream;

    std::map<std::wstring, JSObject*> m_SerializablePrototypes;

    bool IsSerializablePrototype(const std::wstring& name);
    JSObject* GetSerializablePrototype(const std::wstring& name);
};

#endif // INCLUDED_STDDESERIALIZER