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/*
* Copyright 2007 Sascha Weinreuter
*
* 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.plugins.relaxNG.references;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.util.Condition;
import com.intellij.patterns.PsiFilePattern;
import com.intellij.psi.*;
import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference;
import com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReferenceSet;
import com.intellij.util.NotNullFunction;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import static com.intellij.patterns.XmlPatterns.*;
/**
* Created by IntelliJ IDEA.
* User: sweinreuter
* Date: 29.08.2007
*/
public class FileReferenceUtil {
public static PsiReference[] restrict(FileReferenceSet set, final Condition<PsiFile> cond) {
return restrict(set, cond, null);
}
public static PsiReference[] restrict(FileReferenceSet set, final Condition<PsiFile> cond, final Boolean soft) {
final FileReference[] references = set.getAllReferences();
return ContainerUtil.map2Array(references, PsiReference.class, new NotNullFunction<FileReference, PsiReference>() {
@NotNull
public PsiReference fun(FileReference fileReference) {
return new MyFileReference(fileReference, cond, soft);
}
});
}
public static Condition<PsiFile> byType(FileType instance) {
return new TypeCondition(instance);
}
public static Condition<PsiFile> byNamespace(String ns) {
return new PatternCondition(xmlFile().withRootTag(xmlTag().withNamespace(string().equalTo(ns))));
}
private static class TypeCondition implements Condition<PsiFile> {
private final FileType myType;
public TypeCondition(FileType type) {
myType = type;
}
public boolean value(PsiFile file) {
return file.getFileType() == myType;
}
}
private static class PatternCondition implements Condition<PsiFile> {
private final PsiFilePattern myPattern;
public PatternCondition(PsiFilePattern pattern) {
myPattern = pattern;
}
public boolean value(PsiFile o) {
return myPattern.accepts(o);
}
}
private static class MyFileReference extends FileReference {
private final Condition<PsiFile> myCond;
private final Boolean mySoft;
public MyFileReference(FileReference fileReference, Condition<PsiFile> cond, @Nullable Boolean soft) {
super(fileReference.getFileReferenceSet(), fileReference.getRangeInElement(), fileReference.getIndex(), fileReference.getCanonicalText());
myCond = cond;
mySoft = soft;
}
@Override
public boolean isSoft() {
return mySoft == null ? super.isSoft() : mySoft;
}
@Override
public PsiFileSystemItem resolve() {
final PsiFileSystemItem result = super.resolve();
if (result instanceof PsiFile) {
if (!myCond.value((PsiFile)result)) {
return null;
}
}
return result;
}
@Override
protected ResolveResult[] innerResolve() {
final ResolveResult[] results = super.innerResolve();
return ContainerUtil.findAll(results, new Condition<ResolveResult>() {
public boolean value(ResolveResult resolveResult) {
final PsiElement e = resolveResult.getElement();
return match(e, myCond);
}
}).toArray(ResolveResult.EMPTY_ARRAY);
}
@NotNull
@Override
public Object[] getVariants() {
final Object[] variants = super.getVariants();
return ContainerUtil.findAll(variants, new Condition<Object>() {
public boolean value(Object o) {
/*if (o instanceof CandidateInfo) {
o = ((CandidateInfo)o).getElement();
}*/
return match(o, myCond);
}
}).toArray();
}
private static boolean match(Object o, Condition<PsiFile> cond) {
return !(o instanceof PsiFileSystemItem) ||
((PsiFileSystemItem)o).isDirectory() ||
(o instanceof PsiFile && cond.value((PsiFile)o));
}
}
}
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