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Extend spacer with callback events

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Callback events allow the client of spacer to
get events during exection. The events include
new lemmas and unfolding.
This commit is contained in:
Matteo 2017-10-05 14:07:11 +02:00 • committed by Arie Gurfinkel
parent b51251f394
commit 3c7165780c
12 changed files with 254 additions and 8 deletions
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39
src/muz/spacer/spacer_context.h
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@ -28,7 +28,7 @@ Notes:
#undef max
#endif
#include <queue>
#include "util/scoped_ptr_vector.h"
#include "muz/spacer/spacer_manager.h"
#include "muz/spacer/spacer_prop_solver.h"
@ -114,6 +114,7 @@ class lemma {
app_ref_vector m_bindings;
unsigned m_lvl;
pob_ref m_pob;
bool m_external;
void mk_expr_core();
void mk_cube_core();
@ -135,6 +136,9 @@ public:
void add_skolem(app *zk, app* b);
inline void set_external(bool ext){m_external = ext;}
inline bool external() { return m_external;}
unsigned level () const {return m_lvl;}
void set_level (unsigned lvl) {m_lvl = lvl;}
app_ref_vector& get_bindings() {return m_bindings;}
@ -685,6 +689,32 @@ public:
};
class spacer_callback {
protected:
context &m_context;
public:
spacer_callback(context &context) : m_context(context) {}
virtual ~spacer_callback() = default;
context &get_context() { return m_context; }
virtual inline bool new_lemma() { return false; }
virtual void new_lemma_eh(expr *lemma, unsigned level) {}
virtual inline bool predecessor() { return false; }
virtual void predecessor_eh() {}
virtual inline bool unfold() { return false; }
virtual void unfold_eh() {}
};
class context {
struct stats {
@ -697,6 +727,8 @@ class context {
unsigned m_expand_node_undef;
unsigned m_num_lemmas;
unsigned m_num_restarts;
unsigned m_num_lemmas_imported;
unsigned m_num_lemmas_discarded;
stats() { reset(); }
void reset() { memset(this, 0, sizeof(*this)); }
};
@ -731,6 +763,7 @@ class context {
bool m_weak_abs;
bool m_use_restarts;
unsigned m_restart_initial_threshold;
scoped_ptr_vector<spacer_callback> m_callbacks;
// Functions used by search.
lbool solve_core (unsigned from_lvl = 0);
@ -850,6 +883,10 @@ public:
expr_ref get_constraints (unsigned lvl);
void add_constraints (unsigned lvl, const expr_ref& c);
void new_lemma_eh(pred_transformer &pt, lemma *lem);
scoped_ptr_vector<spacer_callback> &callbacks() {return m_callbacks;}
};
inline bool pred_transformer::use_native_mbp () {return ctx.use_native_mbp ();}