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support for Indexof2 in theory_str

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This commit is contained in:
Murphy Berzish 2016-06-15 17:37:17 -04:00
parent 881e3056f3
commit dc5a334d42
6 changed files with 133 additions and 1 deletions
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6
src/smt/theory_str.h
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@ -107,11 +107,13 @@ namespace smt {
ptr_vector<enode> m_string_constant_length_todo;
// enode lists for term-specific axioms
// TODO maybe refactor this into a generic "library_aware_axiom_todo" list
ptr_vector<enode> m_axiom_CharAt_todo;
ptr_vector<enode> m_axiom_StartsWith_todo;
ptr_vector<enode> m_axiom_EndsWith_todo;
ptr_vector<enode> m_axiom_Contains_todo;
ptr_vector<enode> m_axiom_Indexof_todo;
ptr_vector<enode> m_axiom_Indexof2_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
@ -158,6 +160,7 @@ namespace smt {
expr * mk_concat(expr * n1, expr * n2);
expr * mk_concat_const_str(expr * n1, expr * n2);
app * mk_contains(expr * haystack, expr * needle);
app * mk_indexof(expr * haystack, expr * needle);
literal mk_literal(expr* _e);
app * mk_int(int n);
@ -191,6 +194,8 @@ namespace smt {
bool is_Contains(enode const * n) const { return is_Contains(n->get_owner()); }
bool is_Indexof(app const * a) const { return a->is_app_of(get_id(), OP_STR_INDEXOF); }
bool is_Indexof(enode const * n) const { return is_Indexof(n->get_owner()); }
bool is_Indexof2(app const * a) const { return a->is_app_of(get_id(), OP_STR_INDEXOF2); }
bool is_Indexof2(enode const * n) const { return is_Indexof2(n->get_owner()); }
void instantiate_concat_axiom(enode * cat);
void instantiate_basic_string_axioms(enode * str);
@ -201,6 +206,7 @@ namespace smt {
void instantiate_axiom_EndsWith(enode * e);
void instantiate_axiom_Contains(enode * e);
void instantiate_axiom_Indexof(enode * e);
void instantiate_axiom_Indexof2(enode * e);
void set_up_axioms(expr * ex);
void handle_equality(expr * lhs, expr * rhs);