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47 lines
929 B
C++
47 lines
929 B
C++
/*++
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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sat_extension.h
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Abstract:
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An abstract class for SAT extensions.
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Author:
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Leonardo de Moura (leonardo) 2011-05-21.
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Revision History:
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--*/
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#ifndef _SAT_EXTENSION_H_
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#define _SAT_EXTENSION_H_
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#include"sat_types.h"
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#include"params.h"
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namespace sat {
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enum check_result {
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CR_DONE, CR_CONTINUE, CR_GIVEUP
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};
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class extension {
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public:
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virtual void propagate(literal l, ext_constraint_idx idx, bool & keep) = 0;
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virtual void get_antecedents(literal l, ext_justification_idx idx, literal_vector & r) = 0;
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virtual void asserted(literal l) = 0;
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virtual check_result check() = 0;
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virtual void push() = 0;
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virtual void pop(unsigned n) = 0;
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virtual void simplify() = 0;
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virtual void clauses_modifed() = 0;
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virtual lbool get_phase(bool_var v) = 0;
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};
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};
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#endif
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