/* Theoretic - Graph Theoretic Byte Code Engineering
 * Copyright (C) 2001-2002  Jay Freeman (saurik)
*/

/*
 *        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.
 * 3. The name of the author may not be used to endorse
 *    or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*/

#ifndef THEORETIC_INSTRUCTION_H
#define THEORETIC_INSTRUCTION_H

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "theoretic/IEngine.h"
#include "theoretic/Operation.h"

namespace Theoretic {

	class Instruction : public Operation {
	  public:
		typedef std::pair<uint32_t, Instruction *> OffsetPair;
		typedef std::map<uint32_t, Instruction *> OffsetMap;

	  protected:
		struct Control {
			uint32_t offset;
			std::wstring name;
			bool adjust;

			Control(uint32_t offset, std::wstring name, bool adjust);
		};

		typedef std::vector<Control> ControlList;
		ControlList control;

		uint32_t width;
		uint32_t start;
		IEngine &engine;

	  public:
		Instruction(XalanNode *op, uint32_t start, uint8_t * &data, IEngine &engine);
		virtual ~Instruction();

		void Resolve(const OffsetMap &offsets);

	  private:
		int32_t GetInteger(const XalanDOMString &value);
		void Read(XalanNode *where, uint8_t * &data);
	};

}

#endif//THEORETIC_INSTRUCTION_H