mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-08 10:25:18 +00:00
Code Activity

add repair step for str.replace

Browse source
This commit is contained in:
Nikolaj Bjorner 2024-12-12 09:15:36 -08:00
parent e8c2360043
commit 1e5c59a06f
1 changed files with 26 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
src/ast/sls/sls_seq_plugin.cpp
View file

@ -414,7 +414,15 @@ namespace sls {
return ev.val1.svalue;
}
}
case OP_SEQ_REPLACE:
case OP_SEQ_REPLACE: {
expr* x, * y, * z;
VERIFY(seq.str.is_replace(e, x, y, z));
zstring r = strval0(x);
zstring s = strval0(y);
zstring t = strval0(z);
ev.val1.svalue = r.replace(s, t);
return ev.val1.svalue;
}
case OP_SEQ_NTH:
case OP_SEQ_NTH_I:
case OP_SEQ_NTH_U:
@ -1133,6 +1141,10 @@ namespace sls {
if (seq.is_string(to_app(e)->get_arg(0)->get_sort()))
return repair_down_in_re(e);
break;
case OP_SEQ_REPLACE:
if (seq.is_string(e->get_sort()))
return repair_down_str_replace(e);
break;
case OP_STRING_UBVTOS:
case OP_STRING_SBVTOS:
case OP_STRING_TO_CODE:
@ -1141,7 +1153,7 @@ namespace sls {
case OP_SEQ_NTH:
case OP_SEQ_NTH_I:
case OP_SEQ_NTH_U:
case OP_SEQ_REPLACE:
case OP_SEQ_REPLACE_RE_ALL:
case OP_SEQ_REPLACE_RE:
case OP_SEQ_REPLACE_ALL:
@ -1180,6 +1192,18 @@ namespace sls {
return false;
}
bool seq_plugin::repair_down_str_replace(app* e) {
expr* x, * y, * z;
VERIFY(seq.str.is_replace(e, x, y, z));
zstring r = strval0(e);
if (r == strval1(e))
return true;
if (!is_value(x))
m_str_updates.push_back({ x, r, 1 });
// TODO some more possible ways, also deal with y, z if they are not values.
return apply_update();
}
bool seq_plugin::repair_down_str_itos(app* e) {
expr* x;
VERIFY(seq.str.is_itos(e, x));