org.jetbrains.jet.lang.parsing.LastBefore Maven / Gradle / Ivy
/*
* Copyright 2010-2013 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.jet.lang.parsing;
public class LastBefore extends AbstractTokenStreamPattern {
private final boolean dontStopRightAfterOccurrence;
private final TokenStreamPredicate lookFor;
private final TokenStreamPredicate stopAt;
private boolean previousLookForResult;
public LastBefore(TokenStreamPredicate lookFor, TokenStreamPredicate stopAt, boolean dontStopRightAfterOccurrence) {
this.lookFor = lookFor;
this.stopAt = stopAt;
this.dontStopRightAfterOccurrence = dontStopRightAfterOccurrence;
}
public LastBefore(TokenStreamPredicate lookFor, TokenStreamPredicate stopAt) {
this(lookFor, stopAt, false);
}
@Override
public boolean processToken(int offset, boolean topLevel) {
boolean lookForResult = lookFor.matching(topLevel);
if (lookForResult) {
lastOccurrence = offset;
}
if (stopAt.matching(topLevel)) {
if (topLevel
&& (!dontStopRightAfterOccurrence
|| !previousLookForResult)) return true;
}
previousLookForResult = lookForResult;
return false;
}
}