z3-z3-4.13.0.src.ast.normal_forms.nnf.h Maven / Gradle / Ivy
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/*++
Copyright (c) 2007 Microsoft Corporation
Module Name:
nnf.h
Abstract:
Negation Normal Form & Skolemization
Author:
Leonardo (leonardo) 2008-01-11
Notes:
Major revision on 2011-10-06
--*/
#pragma once
#include "ast/ast.h"
#include "util/params.h"
#include "ast/normal_forms/defined_names.h"
class nnf {
struct imp;
imp * m_imp;
public:
nnf(ast_manager & m, defined_names & n, params_ref const & p = params_ref());
~nnf();
void operator()(expr * n, // [IN] expression that should be put into NNF
expr_ref_vector & new_defs, // [OUT] new definitions
proof_ref_vector & new_def_proofs, // [OUT] proofs of the new definitions
expr_ref & r, // [OUT] resultant expression
proof_ref & p // [OUT] proof for (~ n r)
);
void updt_params(params_ref const & p);
/*
REG_MODULE_PARAMS('nnf', 'nnf::get_param_descrs')
*/
static void get_param_descrs(param_descrs & r);
void reset();
void reset_cache();
};