/* ILEngineer - Crummy .NET Decompiler
 * 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.
*/

#pragma once

#include "ilengineer/Block.h"
#include "ilengineer/Ops/MSIL/Leave.h"

#include "ilengineer/ilengineer.h"
#include "metallurgy/ILMethodImpl.h"

namespace ILEngineer {
namespace Blocks {

	class Catch : public Block {
	  protected:
		const Metallurgy::ILMethodImpl::Exception *m_Exception;
		bool m_Pop;
		ULONG m_Indx;

	  public:
		Catch(Blocks::Method *method, uint8_t * &offset, const Metallurgy::ILMethodImpl::Exception *ex, Metallurgy::ILMethodImpl::ExceptionVector &exs) :
			Block(method, offset),
			m_Pop(false),
			m_Indx(0),
			m_Exception(ex)
		{
			uint8_t *end = offset + ex->HandlerLength;
			switch (*(offset++)) {
				case 0x0A: // stloc.0
					m_Indx = 0;
				break;
				case 0x0B: // stloc.1
					m_Indx = 1;
				break;
				case 0x0C: // stloc.2
					m_Indx = 2;
				break;
				case 0x0D:// stloc.3
					m_Indx = 3;
				break;
				case 0x13: // stloc.s <U1>
					m_Indx = *(offset++);
				break;
				case 0x26: // pop
					m_Pop = true;
				break;
			}

			Populate(offset, end - offset, exs);
			m_End = offset;
			Statement *st = m_Statements.back();
			if (!st->isBlock() && typeid(*st->getOperations()[0]) == typeid(Ops::MSIL::Leave)) {
				delete st;
				m_Statements.pop_back();
			}
		}

		ULONG						getIndx()					{ return m_Indx; }
		bool						getPop()					{ return m_Pop; }
		const Metallurgy::ILMethodImpl::Exception *	getException()		{ return m_Exception; }
	};

} }