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add simplification for equalities between itos and constant strings, Issue #589

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-07-08 11:50:39 -07:00
parent bdbf1c9bf4
commit d5ee7e24bc
4 changed files with 60 additions and 11 deletions
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10
src/ast/seq_decl_plugin.cpp
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@ -822,16 +822,6 @@ app* seq_util::str::mk_char(char ch) {
return mk_char(s, 0);
}
bool seq_util::str::is_char(expr* n, zstring& c) const {
if (u.is_char(n)) {
c = zstring(to_app(n)->get_decl()->get_parameter(0).get_symbol().bare_str());
return true;
}
else {
return false;
}
}
bool seq_util::str::is_string(expr const* n, zstring& s) const {
if (is_string(n)) {
s = zstring(to_app(n)->get_decl()->get_parameter(0).get_symbol().bare_str());