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Extract checkCondition helper method

This commit is contained in:
Sam Harwell 2013-01-02 12:58:53 -06:00
parent 21ac9a3ebe
commit 6a9a6f7e50
1 changed files with 17 additions and 21 deletions
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38
runtime/Java/src/org/antlr/v4/runtime/atn/ATNSimulator.java
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@ -301,50 +301,46 @@ public abstract class ATNSimulator {
}
if (state instanceof PlusBlockStartState) {
if (((PlusBlockStartState)state).loopBackState == null) {
throw new IllegalStateException();
}
checkCondition(((PlusBlockStartState)state).loopBackState != null);
}
if (state instanceof StarLoopEntryState) {
if (((StarLoopEntryState)state).loopBackState == null) {
throw new IllegalStateException();
}
checkCondition(((StarLoopEntryState)state).loopBackState != null);
}
if (state instanceof LoopEndState) {
if (((LoopEndState)state).loopBackState == null) {
throw new IllegalStateException();
}
checkCondition(((LoopEndState)state).loopBackState != null);
}
if (state instanceof RuleStartState) {
if (((RuleStartState)state).stopState == null) {
throw new IllegalStateException();
}
checkCondition(((RuleStartState)state).stopState != null);
}
if (state instanceof BlockStartState) {
if (((BlockStartState)state).endState == null) {
throw new IllegalStateException();
}
checkCondition(((BlockStartState)state).endState != null);
}
if (state instanceof BlockEndState) {
if (((BlockEndState)state).startState == null) {
throw new IllegalStateException();
}
checkCondition(((BlockEndState)state).startState != null);
}
if (state instanceof DecisionState) {
DecisionState decisionState = (DecisionState)state;
if (decisionState.getNumberOfTransitions() > 1 && decisionState.decision < 0) {
throw new IllegalStateException();
}
checkCondition(decisionState.getNumberOfTransitions() <= 1 || decisionState.decision >= 0);
}
}
}
public static void checkCondition(boolean condition) {
checkCondition(condition, null);
}
public static void checkCondition(boolean condition, String message) {
if (!condition) {
throw new IllegalStateException(message);
}
}
public static int toInt(char c) {
return c==65535 ? -1 : c;
}