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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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58
lib/spc_clause_pos_set.h Normal file
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/*++
Copyright (c) 2006 Microsoft Corporation
Module Name:
spc_clause_pos_set.h
Abstract:
A set of pairs (clause, index).
Author:
Leonardo de Moura (leonardo) 2008-02-16.
Revision History:
--*/
#ifndef _SPC_CLAUSE_POS_SET_H_
#define _SPC_CLAUSE_POS_SET_H_
#include"hashtable.h"
namespace spc {
typedef std::pair<clause *, unsigned> clause_pos_pair;
class clause_pos_entry {
clause_pos_pair m_data;
public:
typedef clause_pos_pair data;
clause_pos_entry() { m_data.first = 0; }
unsigned get_hash() const { return m_data.first->get_id(); }
bool is_free() const { return m_data.first == 0; }
bool is_deleted() const { return m_data.first == reinterpret_cast<clause *>(1); }
bool is_used() const {
return m_data.first != reinterpret_cast<clause *>(0) && m_data.first != reinterpret_cast<clause *>(1);
}
clause_pos_pair const & get_data() const { return m_data; }
clause_pos_pair & get_data() { return m_data; }
void set_data(clause_pos_pair const & d) {
SASSERT(d.first != 0 && d.first != reinterpret_cast<clause*>(1));
m_data = d;
}
void set_hash(unsigned h) { SASSERT(m_data.first->get_id() == h); }
void mark_as_deleted() { m_data.first = reinterpret_cast<clause *>(1); }
void mark_as_free() { m_data.first = 0; }
};
struct clause_pos_pair_hash {
unsigned operator()(clause_pos_pair const & p) const { return p.first->get_id(); }
};
typedef core_hashtable<clause_pos_entry, clause_pos_pair_hash, default_eq<clause_pos_pair> > clause_pos_set;
};
#endif /* _SPC_CLAUSE_POS_SET_H_ */