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/*
* Copyright 2000-2014 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.plugins.groovy.codeInspection.confusing;
import com.intellij.codeInspection.LocalQuickFix;
import com.intellij.codeInspection.ProblemHighlightType;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.Condition;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.HierarchicalMethodSignature;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiMethod;
import com.intellij.psi.PsiModifier;
import com.intellij.psi.util.PsiFormatUtil;
import com.intellij.psi.util.PsiFormatUtilBase;
import com.intellij.util.Function;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.groovy.codeInspection.BaseInspection;
import org.jetbrains.plugins.groovy.codeInspection.BaseInspectionVisitor;
import org.jetbrains.plugins.groovy.codeInspection.GroovyFix;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.GrTypeDefinition;
import org.jetbrains.plugins.groovy.lang.psi.impl.synthetic.GrTraitMethod;
import org.jetbrains.plugins.groovy.lang.psi.util.GrTraitUtil;
import java.util.Collection;
import java.util.List;
public abstract class ClashingTraitMethodsInspectionBase extends BaseInspection {
protected static final Logger LOG = Logger.getInstance(ClashingTraitMethodsInspectionBase.class);
@NotNull
protected static List<ClashingMethod> collectClassingMethods(@NotNull GrTypeDefinition typeDefinition) {
Collection<HierarchicalMethodSignature> visibleSignatures = typeDefinition.getVisibleSignatures();
List<ClashingMethod> clashingMethods = ContainerUtil.newArrayList();
for (HierarchicalMethodSignature signature : visibleSignatures) {
PsiMethod method = signature.getMethod();
if (method instanceof GrTraitMethod && method.getContainingClass() == typeDefinition) {
List<HierarchicalMethodSignature> superSignatures = signature.getSuperSignatures();
if (superSignatures.size() > 1) {
List<GrTypeDefinition> traits = ContainerUtil.newArrayList();
for (HierarchicalMethodSignature superSignature : superSignatures) {
PsiMethod superMethod = superSignature.getMethod();
PsiClass superClass = superMethod.getContainingClass();
if (GrTraitUtil.isTrait(superClass) &&
!superMethod.getModifierList().hasExplicitModifier(PsiModifier.ABSTRACT)) {
traits.add((GrTypeDefinition)superClass);
}
}
if (traits.size() > 1) {
clashingMethods.add(new ClashingMethod(signature, traits));
}
}
}
}
return clashingMethods;
}
@NotNull
private static List<PsiClass> collectImplementedTraits(@NotNull GrTypeDefinition typeDefinition) {
return ContainerUtil.findAll(typeDefinition.getSupers(), new Condition<PsiClass>() {
@Override
public boolean value(PsiClass aClass) {
return GrTraitUtil.isTrait(aClass);
}
});
}
@NotNull
@Override
protected BaseInspectionVisitor buildVisitor() {
return new BaseInspectionVisitor() {
@Override
public void visitTypeDefinition(GrTypeDefinition typeDefinition) {
super.visitTypeDefinition(typeDefinition);
List<PsiClass> superTraits = collectImplementedTraits(typeDefinition);
if (superTraits.size() < 2) return;
List<ClashingMethod> clashingMethods = collectClassingMethods(typeDefinition);
for (ClashingMethod clashing : clashingMethods) {
registerError(typeDefinition.getNameIdentifierGroovy(), buildWarning(clashing), new LocalQuickFix[]{getFix()}, ProblemHighlightType.GENERIC_ERROR_OR_WARNING);
}
}
@NotNull
private String buildWarning(@NotNull ClashingMethod entry) {
return "Traits " + buildTraitString(entry) + " contain clashing methods with signature " + buildSignatureString(entry);
}
@NotNull
private String buildSignatureString(@NotNull ClashingMethod entry) {
HierarchicalMethodSignature signature = entry.getSignature();
return PsiFormatUtil.formatMethod(signature.getMethod(), signature.getSubstitutor(),
PsiFormatUtilBase.SHOW_NAME | PsiFormatUtilBase.SHOW_PARAMETERS,
PsiFormatUtilBase.SHOW_TYPE);
}
@NotNull
private String buildTraitString(@NotNull ClashingMethod entry) {
return StringUtil.join(entry.getSuperTraits(), new Function<GrTypeDefinition, String>() {
@Override
public String fun(GrTypeDefinition tr) {
return tr.getName();
}
}, ", ");
}
};
}
@NotNull
protected LocalQuickFix getFix(){
return GroovyFix.EMPTY_FIX;
}
protected static class ClashingMethod {
private final HierarchicalMethodSignature mySignature;
private final List<GrTypeDefinition> mySuperTraits;
public ClashingMethod(@NotNull HierarchicalMethodSignature signature, @NotNull List<GrTypeDefinition> superTraits) {
mySignature = signature;
mySuperTraits = superTraits;
}
@NotNull
public HierarchicalMethodSignature getSignature() {
return mySignature;
}
@NotNull
public List<GrTypeDefinition> getSuperTraits() {
return mySuperTraits;
}
}
}
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