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v4: Call mark() from match instead of matchATN 

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9476]
This commit is contained in:
sharwell 2011-11-27 13:45:36 -08:00
parent c0262d569b
commit fc2b4cad07
1 changed files with 19 additions and 21 deletions
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40
runtime/Java/src/org/antlr/v4/runtime/atn/LexerATNSimulator.java
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@ -134,11 +134,17 @@ public class LexerATNSimulator extends ATNSimulator {
public int match(@NotNull CharStream input, int mode) { public int match(@NotNull CharStream input, int mode) {
match_calls++; match_calls++;
this.mode = mode; this.mode = mode;
if ( dfa[mode].s0==null ) { int mark = input.mark();
return matchATN(input); try {
if ( dfa[mode].s0==null ) {
return matchATN(input);
}
else {
return exec(input, dfa[mode].s0);
}
} }
else { finally {
return exec(input, dfa[mode].s0); input.release(mark);
} }
} }
@ -153,23 +159,15 @@ public class LexerATNSimulator extends ATNSimulator {
// only called from test code from outside // only called from test code from outside
public int matchATN(@NotNull CharStream input) { public int matchATN(@NotNull CharStream input) {
int mark = input.mark(); startIndex = input.index();
try { ATNState startState = atn.modeToStartState.get(mode);
startIndex = input.index(); if ( debug ) System.out.println("mode "+ mode +" start: "+startState);
ATNState startState = atn.modeToStartState.get(mode); OrderedHashSet<ATNConfig> s0_closure = computeStartState(input, startState);
if ( debug ) System.out.println("mode "+ mode +" start: "+startState); int old_mode = mode;
OrderedHashSet<ATNConfig> s0_closure = computeStartState(input, startState); dfa[mode].s0 = addDFAState(s0_closure);
int old_mode = mode; int predict = exec(input, s0_closure);
dfa[mode].s0 = addDFAState(s0_closure); if ( debug ) System.out.println("DFA after matchATN: "+dfa[old_mode].toLexerString());
int predict = exec(input, s0_closure); return predict;
if ( debug ) System.out.println("DFA after matchATN: "+dfa[old_mode].toLexerString());
return predict;
}
finally {
if (mark >= 0) {
input.release(mark);
}
}
} }
protected int exec(@NotNull CharStream input, @NotNull DFAState s0) { protected int exec(@NotNull CharStream input, @NotNull DFAState s0) {