dfapass.h
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	/* This Source Code Form is subject to the terms of the Mozilla Public
	* License, v. 2.0. If a copy of the MPL was not distributed with this
	* file, You can obtain one at http://mozilla.org/MPL/2.0/.
	*
	* Author: pgess <v.melnychenko@xreate.org>
	*
	* dfapass.h
	* Data Flow Graph building pass
	*/

	#ifndef DFGPASS_H
	#define DFGPASS_H

	#include "abstractpass.h"
	#include "analysis/dfagraph.h"

	namespace xreate {
	class ClaspLayer;
	}

	namespace xreate { namespace dfa {
	class DfaExpressionProcessor;

	/** \brief Data Flow Analysis Pass(%DFA) */
	class DFAPass: public AbstractPass<SymbolPacked> {
	friend class DfaExpressionProcessor;

	public:
	DFAPass(PassManager* manager);

	SymbolPacked processSymbol(const Symbol& symbol, PassContext context, const std::string& hintSymbol="") override;
	SymbolPacked process(CodeScope* scope, PassContext context, const std::string& hintBlockDecl="") override;

	void init();
	void run() override;
	void finish() override;

	private:
	struct
	{
	DFAGraph* graph;
	} __context;

	std::map<Operator, Expression> __signatures; //DFA data for particular operators
	ClaspLayer* clasp;
	};

	}} //end of xreate::dfa namespace

	#endif