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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
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Leonardo de Moura 2012-10-02 11:35:25 -07:00
parent 3f9edad676
commit e9eab22e5c
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lib/smt_quantifier_instances.h Normal file
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/*++
Copyright (c) 2006 Microsoft Corporation
Module Name:
smt_quantifier_instances.h
Abstract:
<abstract>
Author:
Leonardo de Moura (leonardo) 2008-03-26.
Revision History:
--*/
#ifndef _SMT_QUANTIFIER_INSTANCES_H_
#define _SMT_QUANTIFIER_INSTANCES_H_
namespace smt {
class quantifier_instances;
class quantifier_instance {
quantifier * m_quantifier;
double m_cost;
enode * m_enodes[0];
quantifier_instance(quantifier * q, enode * const * enodes);
friend class quantifier_instances;
public:
quantifier * get_quantifier() const { return m_quantifier; }
unsigned get_num_decls() const { return m_quantifier->get_num_decls(); }
double get_cost() const { return m_cost; }
enode * const * get_enodes() const { return m_enodes; }
bool operator==(quantifier_instance const & other) const;
unsigned hash() const;
};
class quantifier_instances {
struct instance_lt {
ptr_vector<quantifier_instance> const & m_stack;
instance_lt(ptr_vector<quantifier_instance> const & s):
m_stack(s) {
}
bool operator()(int i1, int i2) const {
return m_stack[i1]->get_cost() < m_stack[i2]->get_cost();
}
};
context & m_context;
ast_manager & m_manager;
obj_hashtable<quantifier_instance> m_instances; //!< Set of instances.
ptr_vector<quantifier_instance> m_stack; //!< Stack for backtracking.
heap<instance_lt> m_queue; //!< Instantiation priority queue.
unsigned_vector m_scopes;
};
};
#endif /* _SMT_QUANTIFIER_INSTANCES_H_ */