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77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/*++
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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aig.h
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Abstract:
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And-inverted graphs
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Author:
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Leonardo (leonardo) 2011-05-13
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Notes:
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--*/
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#pragma once
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#include "ast/ast.h"
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#include "tactic/tactic_exception.h"
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class goal;
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class aig_lit;
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class aig_manager;
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class aig_exception : public tactic_exception {
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public:
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aig_exception(char const * msg):tactic_exception(msg) {}
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};
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class aig_ref {
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friend class aig_lit;
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friend class aig_manager;
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aig_manager * m_manager;
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void * m_ref;
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aig_ref(aig_manager & m, aig_lit const & l);
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public:
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aig_ref();
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~aig_ref();
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aig_ref & operator=(aig_ref const & r);
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bool operator==(aig_ref const & r) const { return m_ref == r.m_ref; }
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bool operator!=(aig_ref const & r) const { return m_ref != r.m_ref; }
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};
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class aig_manager {
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struct imp;
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imp * m_imp;
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friend class aig_ref;
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public:
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// If default_gate_encoding == true, then
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// ite(a, b, c) is encoded as (NOT a OR b) AND (a OR c)
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// iff(a, b) is encoded as (NOT a OR b) AND (a OR NOT b)
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//
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// If default_gate_encoding == false, then
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// ite(a, b, c) is encoded as (a AND b) OR (NOT a AND c)
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// iff(a, b) is encoded as (a AND b) OR (NOT a AND NOT b)
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aig_manager(ast_manager & m, unsigned long long max_memory = UINT64_MAX, bool default_gate_encoding = true);
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~aig_manager();
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void set_max_memory(unsigned long long max);
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aig_ref mk_aig(expr * n);
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aig_ref mk_aig(goal const & g);
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aig_ref mk_not(aig_ref const & r);
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aig_ref mk_and(aig_ref const & r1, aig_ref const & r2);
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aig_ref mk_or(aig_ref const & r1, aig_ref const & r2);
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aig_ref mk_iff(aig_ref const & r1, aig_ref const & r2);
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aig_ref mk_ite(aig_ref const & r1, aig_ref const & r2, aig_ref const & r3);
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void max_sharing(aig_ref & r);
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void to_formula(aig_ref const & r, expr_ref & result);
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void to_formula(aig_ref const & r, goal & result);
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void display(std::ostream & out, aig_ref const & r) const;
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void display_smt2(std::ostream & out, aig_ref const & r) const;
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unsigned get_num_aigs() const;
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};
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