/*++
	Copyright (c) 2016 Microsoft Corporation

Module Name:

	bv2fpa_converter.h

Abstract:

	Model conversion for fpa2bv_converter

Author:

	Christoph (cwinter) 2016-10-15

Notes:

--*/
#ifndef BV2FPA_CONVERTER_H_
#define BV2FPA_CONVERTER_H_

#include"fpa_decl_plugin.h"
#include"bv_decl_plugin.h"
#include"th_rewriter.h"
#include"model_core.h"
#include"fpa2bv_converter.h"


class bv2fpa_converter {
	ast_manager & m;
	fpa_util      m_fpa_util;
	bv_util       m_bv_util;
	th_rewriter   m_th_rw;

	obj_map<func_decl, expr*>   m_const2bv;
	obj_map<func_decl, expr*>   m_rm_const2bv;
	obj_map<func_decl, func_decl*>  m_uf2bvuf;
	obj_map<func_decl, std::pair<app*, app*> > m_specials;

public:
	bv2fpa_converter(ast_manager & m);
	bv2fpa_converter(ast_manager & m, fpa2bv_converter & conv);
	virtual ~bv2fpa_converter();

	void display(std::ostream & out);
	bv2fpa_converter * translate(ast_translation & translator);

	expr_ref convert_bv2fp(sort * s, expr * sgn, expr * exp, expr * sig);
	expr_ref convert_bv2fp(model_core * mc, sort * s, app * bv);
	expr_ref convert_bv2rm(expr * eval_v);
	expr_ref convert_bv2rm(model_core * mc, app * val);

	void convert(model_core * mc, model_core * float_mdl);
	void convert_consts(model_core * mc, model_core * target_model, obj_hashtable<func_decl> & seen);
	void convert_rm_consts(model_core * mc, model_core * target_model, obj_hashtable<func_decl> & seen);
	void convert_min_max_specials(model_core * mc, model_core * target_model, obj_hashtable<func_decl> & seen);
	void convert_uf2bvuf(model_core * mc, model_core * target_model, obj_hashtable<func_decl> & seen);

	func_interp * convert_func_interp(model_core * mc, func_decl * f, func_decl * bv_f);
	expr_ref rebuild_floats(model_core * mc, sort * s, app * e);

	class array_model {
	public:
		func_decl * new_float_fd;
		func_interp * new_float_fi;
		func_decl * bv_fd;
		expr_ref result;
		array_model(ast_manager & m) : new_float_fd(0), new_float_fi(0), bv_fd(0), result(m) {}
	};

	array_model convert_array_func_interp(model_core * mc, func_decl * f, func_decl * bv_f);
};

#endif