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port range regular expressions to snode from ZIPT (#9048)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2026-03-19 15:59:20 -07:00 • committed by GitHub
parent 59bc9b17ea
commit 2ec305f206
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3 changed files with 16 additions and 2 deletions
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14
src/ast/euf/euf_sgraph.cpp
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@ -96,6 +96,9 @@ namespace euf {
if (m_seq.re.is_full_seq(e))
return snode_kind::s_full_seq;
if (m_seq.re.is_range(e))
return snode_kind::s_range;
if (m_seq.re.is_to_re(e))
return snode_kind::s_to_re;
@ -252,8 +255,16 @@ namespace euf {
n->m_length = 1;
break;
case snode_kind::s_range:
SASSERT(n->num_args() == 2);
n->m_ground = n->arg(0)->is_ground() && n->arg(1)->is_ground();
n->m_regex_free = false;
n->m_nullable = false;
n->m_level = 1;
n->m_length = 1;
break;
case snode_kind::s_to_re:
// NSB review: are strings nullable or just empty
SASSERT(n->num_args() == 1);
n->m_ground = n->arg(0)->is_ground();
n->m_regex_free = false;
@ -746,6 +757,7 @@ namespace euf {
case snode_kind::s_fail: return "fail";
case snode_kind::s_full_char: return "full_char";
case snode_kind::s_full_seq: return "full_seq";
case snode_kind::s_range: return "range";
case snode_kind::s_to_re: return "to_re";
case snode_kind::s_in_re: return "in_re";
case snode_kind::s_other: return "other";