/* Dialect - Code Output Formatter
 * 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 DIALECT_DIALECTIMPL_H
#define DIALECT_DIALECTIMPL_H

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

#include <sstream>

#include "dialect/Exceptions.h"

namespace Dialect {

template <typename iface>
class DialectImpl : public iface {
  protected:
	std::wostream *wout;
	unsigned int m_Indent;
	bool offsets;

	void UpIndent()		{ m_Indent++; }
	void DownIndent()	{ m_Indent--; }
	std::wstring GetIndent() {
		std::wstring indent;
		for (unsigned int i(0); i < m_Indent; i++)
			indent += L'\t';
		return indent;
	}

  public:
	DialectImpl() :
		wout(NULL),
		m_Indent(0),
		offsets(false)
	{}
	
	void Assign(std::wostream &out) {
		wout = &out;
	}

	virtual void Perform(const Metallurgy::Element *element, std::wstring &builder, Metallurgy::ModDeque &mods) = 0;

	void Render(const Metallurgy::Element *element, std::wstring &builder) {
		Metallurgy::ModDeque mods;
		Render(element, builder, mods);

		while (!mods.empty()) {
			if (mods.front().second)
				throw LanguageSpecificException(mods);
			mods.pop_front();
		}
	}

	void Render(const Metallurgy::Element *element, std::wstring &builder, Metallurgy::ModDeque &mods) {
		bool required, working(true);
		while (working) {
			required = false;
			switch (element->getIntrinsic()) {
				case Chordata::Element::CMod_Reqd:
					required = true;
				case Chordata::Element::CMod_Opt: {
					const Metallurgy::Type *type = dynamic_cast<const Metallurgy::Type *>(element->getType());
					mods.push_back(Metallurgy::ModPair(type->getName().getFull(), required));
					element = element->getExtra();
				} break;

				default:
					working = false;
			}
		}

		Perform(element, builder, mods);
	}
};

}

#endif//DIALECT_DIALECTIMPL_H