| /* |
| * Copyright 2000-2009 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.codeInsight.daemon.impl.quickfix; |
| |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.codeInsight.daemon.QuickFixBundle; |
| import com.intellij.codeInsight.daemon.impl.HighlightInfo; |
| import com.intellij.codeInsight.intention.IntentionAction; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.*; |
| import com.intellij.psi.infos.CandidateInfo; |
| import com.intellij.psi.infos.MethodCandidateInfo; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.psi.util.TypeConversionUtil; |
| import com.intellij.util.ArrayUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * @author cdr |
| */ |
| public class PermuteArgumentsFix implements IntentionAction { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.daemon.impl.quickfix.PermuteArgumentsFix"); |
| private final PsiCall myCall; |
| private final PsiCall myPermutation; |
| |
| private PermuteArgumentsFix(@NotNull PsiCall call, @NotNull PsiCall permutation) { |
| myCall = call; |
| myPermutation = permutation; |
| } |
| |
| @Override |
| public boolean startInWriteAction() { |
| return true; |
| } |
| |
| |
| @Override |
| @NotNull |
| public String getText() { |
| return QuickFixBundle.message("permute.arguments"); |
| } |
| |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return getText(); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| return !project.isDisposed() && myCall.isValid() && myCall.getManager().isInProject(myCall); |
| } |
| |
| @Override |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException { |
| if (!FileModificationService.getInstance().prepareFileForWrite(file)) return; |
| myCall.getArgumentList().replace(myPermutation.getArgumentList()); |
| } |
| |
| public static void registerFix(HighlightInfo info, PsiCall callExpression, final CandidateInfo[] candidates, final TextRange fixRange) { |
| PsiExpression[] expressions = callExpression.getArgumentList().getExpressions(); |
| if (expressions.length < 2) return; |
| List<PsiCall> permutations = new ArrayList<PsiCall>(); |
| |
| for (CandidateInfo candidate : candidates) { |
| if (candidate instanceof MethodCandidateInfo) { |
| MethodCandidateInfo methodCandidate = (MethodCandidateInfo)candidate; |
| PsiMethod method = methodCandidate.getElement(); |
| PsiSubstitutor substitutor = methodCandidate.getSubstitutor(); |
| |
| PsiParameter[] parameters = method.getParameterList().getParameters(); |
| if (expressions.length != parameters.length || parameters.length ==0) continue; |
| int minIncompatibleIndex = parameters.length; |
| int maxIncompatibleIndex = 0; |
| int incompatibilitiesCount = 0; |
| for (int i = 0; i < parameters.length; i++) { |
| PsiParameter parameter = parameters[i]; |
| PsiType type = substitutor.substitute(parameter.getType()); |
| if (TypeConversionUtil.areTypesAssignmentCompatible(type, expressions[i])) continue; |
| if (minIncompatibleIndex == parameters.length) minIncompatibleIndex = i; |
| maxIncompatibleIndex = i; |
| incompatibilitiesCount++; |
| } |
| |
| try { |
| registerSwapFixes(expressions, callExpression, permutations, methodCandidate, incompatibilitiesCount, minIncompatibleIndex, maxIncompatibleIndex); |
| registerShiftFixes(expressions, callExpression, permutations, methodCandidate, minIncompatibleIndex, maxIncompatibleIndex); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| } |
| if (permutations.size() == 1) { |
| PermuteArgumentsFix fix = new PermuteArgumentsFix(callExpression, permutations.get(0)); |
| QuickFixAction.registerQuickFixAction(info, fixRange, fix); |
| } |
| } |
| |
| private static void registerShiftFixes(final PsiExpression[] expressions, final PsiCall callExpression, final List<PsiCall> permutations, |
| final MethodCandidateInfo methodCandidate, final int minIncompatibleIndex, final int maxIncompatibleIndex) |
| throws IncorrectOperationException { |
| PsiMethod method = methodCandidate.getElement(); |
| PsiSubstitutor substitutor = methodCandidate.getSubstitutor(); |
| // shift range should include both incompatible indexes |
| for (int i = 0; i <= minIncompatibleIndex; i++) { |
| for (int j = Math.max(i+2,maxIncompatibleIndex); j < expressions.length; j++) { // if j=i+1 the shift is equal to swap |
| { |
| ArrayUtil.rotateLeft(expressions, i, j); |
| if (PsiUtil.isApplicable(method, substitutor, expressions)) { |
| PsiCall copy = (PsiCall)callExpression.copy(); |
| PsiExpression[] copyExpressions = copy.getArgumentList().getExpressions(); |
| for (int k = i; k < copyExpressions.length; k++) { |
| copyExpressions[k].replace(expressions[k]); |
| } |
| |
| JavaResolveResult result = copy.resolveMethodGenerics(); |
| if (result.getElement() != null && result.isValidResult()) { |
| permutations.add(copy); |
| if (permutations.size() > 1) return; |
| } |
| } |
| ArrayUtil.rotateRight(expressions, i, j); |
| } |
| |
| { |
| ArrayUtil.rotateRight(expressions, i, j); |
| if (PsiUtil.isApplicable(method, substitutor, expressions)) { |
| PsiCall copy = (PsiCall)callExpression.copy(); |
| PsiExpression[] copyExpressions = copy.getArgumentList().getExpressions(); |
| for (int k = i; k < copyExpressions.length; k++) { |
| copyExpressions[k].replace(expressions[k]); |
| } |
| |
| JavaResolveResult result = copy.resolveMethodGenerics(); |
| if (result.getElement() != null && result.isValidResult()) { |
| permutations.add(copy); |
| if (permutations.size() > 1) return; |
| } |
| } |
| ArrayUtil.rotateLeft(expressions, i, j); |
| } |
| } |
| } |
| } |
| |
| private static void registerSwapFixes(final PsiExpression[] expressions, final PsiCall callExpression, final List<PsiCall> permutations, |
| MethodCandidateInfo candidate, final int incompatibilitiesCount, final int minIncompatibleIndex, |
| final int maxIncompatibleIndex) throws IncorrectOperationException { |
| PsiMethod method = candidate.getElement(); |
| PsiSubstitutor substitutor = candidate.getSubstitutor(); |
| if (incompatibilitiesCount >= 3) return; // no way we can fix it by swapping |
| |
| for (int i = minIncompatibleIndex; i < maxIncompatibleIndex; i++) { |
| for (int j = i+1; j <= maxIncompatibleIndex; j++) { |
| ArrayUtil.swap(expressions, i, j); |
| if (PsiUtil.isApplicable(method, substitutor, expressions)) { |
| PsiCall copy = (PsiCall)callExpression.copy(); |
| PsiExpression[] copyExpressions = copy.getArgumentList().getExpressions(); |
| copyExpressions[i].replace(expressions[i]); |
| copyExpressions[j].replace(expressions[j]); |
| JavaResolveResult result = copy.resolveMethodGenerics(); |
| if (result.getElement() != null && result.isValidResult()) { |
| permutations.add(copy); |
| if (permutations.size() > 1) return; |
| } |
| } |
| ArrayUtil.swap(expressions, i, j); |
| } |
| } |
| } |
| } |