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Code Issues Pull Requests 1 Releases Wiki Activity

Move reach variable inside loop. Remove unnecessary ATNConfigSet clone.

This commit is contained in:
Sam Harwell 2012-03-13 19:23:56 -05:00
parent 51a15ac4a7
commit aeb43069aa
1 changed files with 2 additions and 5 deletions
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7
runtime/Java/src/org/antlr/v4/runtime/atn/LexerATNSimulator.java
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@ -247,14 +247,11 @@ public class LexerATNSimulator extends ATNSimulator {
protected int exec(@NotNull CharStream input, @NotNull ATNConfigSet s0, @Nullable DFAState ds0) {
//System.out.println("enter exec index "+input.index()+" from "+s0);
@NotNull
ATNConfigSet closure = new ATNConfigSet();
closure.addAll(s0);
ATNConfigSet closure = s0;
if ( debug ) {
System.out.format("start state closure=%s\n", closure);
}
ATNConfigSet reach = null;
traceLookahead1();
int t = input.LA(1);
DFAState s = ds0; // s is current/from DFA state
@ -282,6 +279,7 @@ public class LexerATNSimulator extends ATNSimulator {
// A character will take us back to an existing DFA state
// that already has lots of edges out of it. e.g., .* in comments.
DFAState target = null;
ATNConfigSet reach = null;
if (s != null) {
if ( s.edges != null && t < s.edges.length && t > CharStream.EOF ) {
closure = s.configset;
@ -331,7 +329,6 @@ public class LexerATNSimulator extends ATNSimulator {
t = input.LA(1);
closure = reach;
reach = null;
s = target; // flip; current DFA target becomes new src/from state
}