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Improved SemanticContext.hashCode(), add @Override annotations

This commit is contained in:
sharwell 2012-02-08 18:54:40 -06:00
parent 773e9e1c7e
commit 64203312ac
1 changed files with 10 additions and 1 deletions
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11
runtime/Java/src/org/antlr/v4/runtime/atn/SemanticContext.java
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@ -83,6 +83,7 @@ public abstract class SemanticContext {
this.isCtxDependent = isCtxDependent;
}
@Override
public boolean eval(Recognizer<?,?> parser, RuleContext outerContext) {
RuleContext localctx = isCtxDependent ? outerContext : null;
return parser.sempred(localctx, ruleIndex, predIndex);
@ -90,7 +91,11 @@ public abstract class SemanticContext {
@Override
public int hashCode() {
return ruleIndex + predIndex;
int hashCode = 1;
hashCode = 31 * hashCode + ruleIndex;
hashCode = 31 * hashCode + predIndex;
hashCode = 31 * hashCode + (isCtxDependent ? 1 : 0);
return hashCode;
}
@Override
@ -103,6 +108,7 @@ public abstract class SemanticContext {
this.isCtxDependent == p.isCtxDependent;
}
@Override
public String toString() {
return "{"+ruleIndex+":"+predIndex+"}?";
}
@ -131,6 +137,7 @@ public abstract class SemanticContext {
return opnds.hashCode();
}
@Override
public boolean eval(Recognizer<?,?> parser, RuleContext outerContext) {
for (SemanticContext opnd : opnds) {
if ( !opnd.eval(parser, outerContext) ) return false;
@ -138,6 +145,7 @@ public abstract class SemanticContext {
return true;
}
@Override
public String toString() {
return Utils.join(opnds.iterator(), "&&");
}
@ -166,6 +174,7 @@ public abstract class SemanticContext {
return opnds.hashCode() + 1; // differ from AND slightly
}
@Override
public boolean eval(Recognizer<?,?> parser, RuleContext outerContext) {
for (SemanticContext opnd : opnds) {
if ( opnd.eval(parser, outerContext) ) return true;