/*
* Copyright 2012-2014 Sergey Ignatov
*
* 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.intellij.erlang.psi.impl;
import com.intellij.psi.PsiElement;
import com.intellij.psi.ResolveState;
import com.intellij.psi.scope.PsiScopeProcessor;
import com.intellij.psi.util.PsiTreeUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public abstract class ResolveUtil {
private ResolveUtil() {
}
public static boolean treeWalkUp(@Nullable PsiElement place, @NotNull PsiScopeProcessor processor) {
PsiElement lastParent = null;
PsiElement run = place;
while (run != null) {
if (place != run && !run.processDeclarations(processor, ResolveState.initial(), lastParent, place)) return false;
lastParent = run;
run = run.getParent();
}
return true;
}
public static boolean processChildren(@NotNull PsiElement element,
@NotNull PsiScopeProcessor processor,
@NotNull ResolveState substitutor,
@Nullable PsiElement lastParent,
@NotNull PsiElement place) {
PsiElement run = lastParent == null ? element.getLastChild() : lastParent.getPrevSibling();
while (run != null) {
if (PsiTreeUtil.findCommonParent(place, run) != run && !run.processDeclarations(processor, substitutor, null, place)) {
return false;
}
run = run.getPrevSibling();
}
return true;
}
}