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| author | Andrew Reynolds <andrew.j.reynolds@gmail.com> | 2020-05-26 12:41:31 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-26 12:41:31 -0500 |
| commit | 114a215e9b33effb361c4b000fb23085ce9f079a (patch) | |
| tree | b7f1e9d3bf4d37ac86706f035338955ee4e21502 /src/theory/strings/solver_state.cpp | |
| parent | 1e6f142d3b309db022edcfd3218adcb146d73dec (diff) | |
Convert more uses of strings to words (#4527)
Diffstat (limited to 'src/theory/strings/solver_state.cpp')
| -rw-r--r-- | src/theory/strings/solver_state.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/theory/strings/solver_state.cpp b/src/theory/strings/solver_state.cpp index 1766a4b24..622e919f7 100644 --- a/src/theory/strings/solver_state.cpp +++ b/src/theory/strings/solver_state.cpp @@ -264,6 +264,20 @@ Node SolverState::explainNonEmpty(Node s) return Node::null(); } +bool SolverState::isEqualEmptyWord(Node s, Node& emps) +{ + Node sr = getRepresentative(s); + if (sr.isConst()) + { + if (Word::getLength(sr) == 0) + { + emps = sr; + return true; + } + } + return false; +} + void SolverState::setConflict() { d_conflict = true; } bool SolverState::isInConflict() const { return d_conflict; } |