| /* |
| * Copyright 2000-2012 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.refactoring.util.duplicates; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiTypesUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.refactoring.RefactoringBundle; |
| import com.intellij.refactoring.util.RefactoringChangeUtil; |
| import com.intellij.refactoring.util.RefactoringUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.VisibilityUtil; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * User: anna |
| * Date: 1/16/12 |
| */ |
| class MethodDuplicatesMatchProvider implements MatchProvider { |
| private final PsiMethod myMethod; |
| private final List<Match> myDuplicates; |
| private static final Logger LOG = Logger.getInstance("#" + MethodDuplicatesMatchProvider.class.getName()); |
| |
| MethodDuplicatesMatchProvider(PsiMethod method, List<Match> duplicates) { |
| myMethod = method; |
| myDuplicates = duplicates; |
| } |
| |
| @Override |
| public PsiElement processMatch(Match match) throws IncorrectOperationException { |
| MatchUtil.changeSignature(match, myMethod); |
| final PsiClass containingClass = myMethod.getContainingClass(); |
| if (isEssentialStaticContextAbsent(match)) { |
| PsiUtil.setModifierProperty(myMethod, PsiModifier.STATIC, true); |
| } |
| |
| final PsiElementFactory factory = JavaPsiFacade.getInstance(myMethod.getProject()).getElementFactory(); |
| final boolean needQualifier = match.getInstanceExpression() != null; |
| final boolean needStaticQualifier = isExternal(match); |
| final boolean nameConflicts = nameConflicts(match); |
| @NonNls final String text = needQualifier || needStaticQualifier || nameConflicts |
| ? "q." + myMethod.getName() + "()": myMethod.getName() + "()"; |
| PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)factory.createExpressionFromText(text, null); |
| methodCallExpression = (PsiMethodCallExpression)CodeStyleManager.getInstance(myMethod.getManager()).reformat(methodCallExpression); |
| final PsiParameter[] parameters = myMethod.getParameterList().getParameters(); |
| for (final PsiParameter parameter : parameters) { |
| final List<PsiElement> parameterValue = match.getParameterValues(parameter); |
| if (parameterValue != null) { |
| for (PsiElement val : parameterValue) { |
| methodCallExpression.getArgumentList().add(val); |
| } |
| } |
| else { |
| methodCallExpression.getArgumentList().add(factory.createExpressionFromText(PsiTypesUtil.getDefaultValueOfType(parameter.getType()), parameter)); |
| } |
| } |
| if (needQualifier || needStaticQualifier || nameConflicts) { |
| final PsiExpression qualifierExpression = methodCallExpression.getMethodExpression().getQualifierExpression(); |
| LOG.assertTrue(qualifierExpression != null); |
| if (needQualifier) { |
| qualifierExpression.replace(match.getInstanceExpression()); |
| } else if (needStaticQualifier || myMethod.hasModifierProperty(PsiModifier.STATIC)) { |
| qualifierExpression.replace(factory.createReferenceExpression(containingClass)); |
| } else { |
| final PsiClass psiClass = PsiTreeUtil.getParentOfType(match.getMatchStart(), PsiClass.class); |
| if (psiClass != null && psiClass.isInheritor(containingClass, true)) { |
| qualifierExpression.replace(RefactoringChangeUtil.createSuperExpression(containingClass.getManager(), null)); |
| } else { |
| qualifierExpression.replace(RefactoringChangeUtil.createThisExpression(containingClass.getManager(), containingClass)); |
| } |
| } |
| } |
| VisibilityUtil.escalateVisibility(myMethod, match.getMatchStart()); |
| final PsiCodeBlock body = myMethod.getBody(); |
| assert body != null; |
| final PsiStatement[] statements = body.getStatements(); |
| if (statements[statements.length - 1] instanceof PsiReturnStatement) { |
| final PsiExpression value = ((PsiReturnStatement)statements[statements.length - 1]).getReturnValue(); |
| if (value instanceof PsiReferenceExpression) { |
| final PsiElement var = ((PsiReferenceExpression)value).resolve(); |
| if (var instanceof PsiVariable) { |
| match.replace(myMethod, methodCallExpression, (PsiVariable)var); |
| return methodCallExpression; |
| } |
| } |
| } |
| return match.replace(myMethod, methodCallExpression, null); |
| } |
| |
| |
| |
| private boolean isExternal(final Match match) { |
| final PsiElement matchStart = match.getMatchStart(); |
| final PsiClass containingClass = myMethod.getContainingClass(); |
| if (PsiTreeUtil.isAncestor(containingClass, matchStart, false)) { |
| return false; |
| } |
| final PsiClass psiClass = PsiTreeUtil.getParentOfType(matchStart, PsiClass.class); |
| if (psiClass != null) { |
| if (InheritanceUtil.isInheritorOrSelf(psiClass, containingClass, true)) return false; |
| } |
| return true; |
| } |
| |
| private boolean nameConflicts(Match match) { |
| PsiClass matchClass = PsiTreeUtil.getParentOfType(match.getMatchStart(), PsiClass.class); |
| while (matchClass != null && matchClass != myMethod.getContainingClass()) { |
| if (matchClass.findMethodsBySignature(myMethod, false).length > 0) { |
| return true; |
| } |
| matchClass = PsiTreeUtil.getParentOfType(matchClass, PsiClass.class); |
| } |
| return false; |
| } |
| |
| private boolean isEssentialStaticContextAbsent(final Match match) { |
| if (!myMethod.hasModifierProperty(PsiModifier.STATIC)) { |
| final PsiExpression instanceExpression = match.getInstanceExpression(); |
| if (instanceExpression != null) return false; |
| if (isExternal(match)) return true; |
| if (PsiTreeUtil.isAncestor(myMethod.getContainingClass(), match.getMatchStart(), false) && RefactoringUtil.isInStaticContext(match.getMatchStart(), myMethod.getContainingClass())) return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public List<Match> getDuplicates() { |
| return myDuplicates; |
| } |
| |
| @Override |
| public boolean hasDuplicates() { |
| return myDuplicates.isEmpty(); |
| } |
| |
| @Override |
| @Nullable |
| public String getConfirmDuplicatePrompt(final Match match) { |
| final PsiElement matchStart = match.getMatchStart(); |
| String visibility = VisibilityUtil.getPossibleVisibility(myMethod, matchStart); |
| final boolean shouldBeStatic = isEssentialStaticContextAbsent(match); |
| final String signature = MatchUtil |
| .getChangedSignature(match, myMethod, myMethod.hasModifierProperty(PsiModifier.STATIC) || shouldBeStatic, visibility); |
| if (signature != null) { |
| return RefactoringBundle.message("replace.this.code.fragment.and.change.signature", signature); |
| } |
| final boolean needToEscalateVisibility = !PsiUtil.isAccessible(myMethod, matchStart, null); |
| if (needToEscalateVisibility) { |
| final String visibilityPresentation = VisibilityUtil.toPresentableText(visibility); |
| return shouldBeStatic |
| ? RefactoringBundle.message("replace.this.code.fragment.and.make.method.static.visible", visibilityPresentation) |
| : RefactoringBundle.message("replace.this.code.fragment.and.make.method.visible", visibilityPresentation); |
| } |
| if (shouldBeStatic) { |
| return RefactoringBundle.message("replace.this.code.fragment.and.make.method.static"); |
| } |
| return null; |
| } |
| |
| @Override |
| public String getReplaceDuplicatesTitle(int idx, int size) { |
| return RefactoringBundle.message("process.methods.duplicates.title", idx, size, myMethod.getName()); |
| } |
| } |