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/*
* Copyright 2000-2013 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 com.intellij.spi;
import com.intellij.lang.annotation.AnnotationHolder;
import com.intellij.lang.annotation.Annotator;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.util.ClassUtil;
import com.intellij.psi.util.PsiUtilCore;
import com.intellij.spi.psi.SPIClassProviderReferenceElement;
import org.jetbrains.annotations.NotNull;
/**
* User: anna
*/
public class SPIAnnotator implements Annotator{
@Override
public void annotate(@NotNull PsiElement element, @NotNull AnnotationHolder holder) {
final VirtualFile file = PsiUtilCore.getVirtualFile(element);
if (file != null && file.getFileType() instanceof SPIFileType) {
final String serviceProviderName = file.getName();
final PsiClass psiClass =
ClassUtil.findPsiClass(element.getManager(), serviceProviderName, null, true, element.getContainingFile().getResolveScope());
if (element instanceof PsiFile) {
if (psiClass == null) {
holder.createErrorAnnotation(element, "No service provider \"" + serviceProviderName + "\' found").setFileLevelAnnotation(true);
}
} else if (element instanceof SPIClassProviderReferenceElement) {
final PsiElement resolve = ((SPIClassProviderReferenceElement)element).resolve();
if (resolve == null) {
holder.createErrorAnnotation(element, "Cannot resolve symbol " + element.getText());
} else if (resolve instanceof PsiClass && psiClass != null) {
if (!((PsiClass)resolve).isInheritor(psiClass, true)) {
holder.createErrorAnnotation(element, "Registered extension should implement " + serviceProviderName);
}
}
}
}
}
}
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