mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-12-21 03:33:43 +00:00
Code Activity

add rewrites for #2575

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-09-20 08:55:53 -07:00
parent 80636dd35f
commit cd0cd82eb7
4 changed files with 78 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/ast/seq_decl_plugin.cpp
View file

@ -747,6 +747,9 @@ func_decl * seq_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters,
if (num_parameters == 0 || num_parameters > 2 || !parameters[0].is_int() || (num_parameters == 2 && !parameters[1].is_int())) {
m.raise_exception("Expecting two numeral parameters to function re-loop");
}
if (num_parameters == 2 && parameters[0].get_int() > parameters[1].get_int()) {
m.raise_exception("Lower bound cannot be higher than upper bound in loop specfication");
}
return m.mk_func_decl(m_sigs[k]->m_name, arity, domain, rng, func_decl_info(m_family_id, k, num_parameters, parameters));
case 2:
if (m_re != domain[0] || !arith_util(m).is_int(domain[1])) {
@ -1083,6 +1086,11 @@ app* seq_util::str::mk_is_empty(expr* s) const {
}
sort* seq_util::re::to_seq(sort* re) {
SASSERT(u.is_re(re));
return to_sort(re->get_parameter(0).get_ast());
}
app* seq_util::re::mk_loop(expr* r, unsigned lo) {
parameter param(lo);
return m.mk_app(m_fid, OP_RE_LOOP, 1, &param, 1, &r);