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ensure reproducible elements order by sorting #213

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ensure reproducible elements order by sorting #213

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2 changes: 2 additions & 0 deletions tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,7 @@ import org.antlr.codegen.*;
import java.util.HashSet;
import java.util.Set;
import java.util.Collection;
import java.util.Collections;
import org.antlr.runtime.BitSet;
import org.antlr.runtime.DFA;
import org.stringtemplate.v4.ST;
Expand Down Expand Up @@ -284,6 +285,7 @@ protected final List<String> getTokenTypesAsTargetLabels(Collection<GrammarAST>
}
labels.add( label );
}
Collections.sort(labels); // ensure reproducible order
return labels;
}

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