Improve implementation of ParserATNSimulator::getConflictingAlts()

PredictionModeClass::getAlts(configs) yields the same result as PredictionModeClass::getAlts( PredictionModeClass::getConflictingAltSubsets(configs) ) Both return a BitSet with bits set for all alts which occur in configs. Signed-off-by: Andreas Buhr <[email protected]>
antlr · Apr 11, 2024 · 4977cd9 · 4977cd9
1 parent 380ce4b
commit 4977cd9
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/runtime/Cpp/runtime/src/atn/ParserATNSimulator.cpp b/runtime/Cpp/runtime/src/atn/ParserATNSimulator.cpp
@@ -1201,8 +1201,7 @@ Ref<ATNConfig> ParserATNSimulator::ruleTransition(Ref<ATNConfig> const& config,
 }
 
 BitSet ParserATNSimulator::getConflictingAlts(ATNConfigSet *configs) {
-  std::vector<BitSet> altsets = PredictionModeClass::getConflictingAltSubsets(configs);
-  return PredictionModeClass::getAlts(altsets);
+  return PredictionModeClass::getAlts(configs);
 }
 
 BitSet ParserATNSimulator::getConflictingAltsOrUniqueAlt(ATNConfigSet *configs) {