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implement str_decl_plugin::is_value() and ::is_unique_value()

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we can now prove that (= "abc" "def") is unsatisfiable
This commit is contained in:
Murphy Berzish 2015-09-27 23:57:41 -04:00
parent 02cb329ca5
commit 0d54e4e4ae
2 changed files with 15 additions and 1 deletions
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12
src/ast/str_decl_plugin.cpp
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@ -115,6 +115,18 @@ void str_decl_plugin::get_sort_names(svector<builtin_name> & sort_names, symbol
sort_names.push_back(builtin_name("String", STRING_SORT));
}
bool str_decl_plugin::is_value(app * e) const {
if (e->get_family_id() != m_family_id) {
return false;
}
switch (e->get_decl_kind()) {
case OP_STR:
return true;
default:
return false;
}
}
bool str_recognizers::is_string(expr const * n, const char ** val) const {
if (!is_app_of(n, m_afid, OP_STR))
return false;

4
src/ast/str_decl_plugin.h
View file

@ -60,8 +60,10 @@ public:
app * mk_string(const char * val);
virtual void get_op_names(svector<builtin_name> & op_names, symbol const & logic);
virtual void get_sort_names(svector<builtin_name> & sort_names, symbol const & logic);
virtual bool is_value(app * e) const;
virtual bool is_unique_value(app * e) const { return is_value(e); }
// TODO
};