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https://github.com/Z3Prover/z3
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86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*++
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Copyright (c) 2006 Microsoft Corporation
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Module Name:
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fingerprints.h
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Abstract:
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<abstract>
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Author:
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Leonardo de Moura (leonardo) 2007-02-24.
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Revision History:
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--*/
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#ifndef FINGERPRINTS_H_
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#define FINGERPRINTS_H_
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#include"smt_enode.h"
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namespace smt {
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class fingerprint {
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protected:
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void * m_data;
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unsigned m_data_hash;
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unsigned m_num_args;
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enode * * m_args;
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friend class fingerprint_set;
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fingerprint() {}
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public:
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fingerprint(region & r, void * d, unsigned d_hash, unsigned n, enode * const * args);
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void * get_data() const { return m_data; }
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unsigned get_data_hash() const { return m_data_hash; }
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unsigned get_num_args() const { return m_num_args; }
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enode * const * get_args() const { return m_args; }
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enode * get_arg(unsigned idx) const { SASSERT(idx < m_num_args); return m_args[idx]; }
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};
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class fingerprint_set {
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struct fingerprint_khasher {
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unsigned operator()(fingerprint const * f) const { return f->get_data_hash(); }
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};
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struct fingerprint_chasher {
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unsigned operator()(fingerprint const * f, unsigned idx) const { return f->get_arg(idx)->hash(); }
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};
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struct fingerprint_hash_proc {
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unsigned operator()(fingerprint const * f) const {
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return get_composite_hash<fingerprint *, fingerprint_khasher, fingerprint_chasher>(const_cast<fingerprint*>(f), f->get_num_args());
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}
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};
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struct fingerprint_eq_proc { bool operator()(fingerprint const * f1, fingerprint const * f2) const; };
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typedef ptr_hashtable<fingerprint, fingerprint_hash_proc, fingerprint_eq_proc> set;
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region & m_region;
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set m_set;
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ptr_vector<fingerprint> m_fingerprints;
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unsigned_vector m_scopes;
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ptr_vector<enode> m_tmp;
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fingerprint m_dummy;
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fingerprint * mk_dummy(void * data, unsigned data_hash, unsigned num_args, enode * const * args);
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public:
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fingerprint_set(region & r):m_region(r) {}
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fingerprint * insert(void * data, unsigned data_hash, unsigned num_args, enode * const * args);
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unsigned size() const { return m_fingerprints.size(); }
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bool contains(void * data, unsigned data_hash, unsigned num_args, enode * const * args);
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void reset();
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void push_scope();
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void pop_scope(unsigned num_scopes);
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void display(std::ostream & out) const;
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#ifdef Z3DEBUG
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bool slow_contains(void const * data, unsigned data_hash, unsigned num_args, enode * const * args) const;
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#endif
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};
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};
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#endif /* FINGERPRINTS_H_ */
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