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EndsWith decl and rewriter, WIP

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This commit is contained in:
Murphy Berzish 2016-06-14 17:55:46 -04:00
parent 4f131ebba7
commit fd38b4c729
6 changed files with 79 additions and 1 deletions
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5
src/smt/theory_str.h
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@ -109,6 +109,7 @@ namespace smt {
// enode lists for term-specific axioms
ptr_vector<enode> m_axiom_CharAt_todo;
ptr_vector<enode> m_axiom_StartsWith_todo;
ptr_vector<enode> m_axiom_EndsWith_todo;
// hashtable of all exprs for which we've already set up term-specific axioms --
// this prevents infinite recursive descent with respect to axioms that
@ -180,12 +181,16 @@ namespace smt {
bool is_CharAt(enode const * n) const { return is_CharAt(n->get_owner()); }
bool is_StartsWith(app const * a) const { return a->is_app_of(get_id(), OP_STR_STARTSWITH); }
bool is_StartsWith(enode const * n) const { return is_StartsWith(n->get_owner()); }
bool is_EndsWith(app const * a) const { return a->is_app_of(get_id(), OP_STR_ENDSWITH); }
bool is_EndsWith(enode const * n) const { return is_EndsWith(n->get_owner()); }
void instantiate_concat_axiom(enode * cat);
void instantiate_basic_string_axioms(enode * str);
void instantiate_str_eq_length_axiom(enode * lhs, enode * rhs);
void instantiate_axiom_CharAt(enode * e);
void instantiate_axiom_StartsWith(enode * e);
void instantiate_axiom_EndsWith(enode * e);
void set_up_axioms(expr * ex);
void handle_equality(expr * lhs, expr * rhs);