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/*
* 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.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.daemon.impl.analysis.HighlightUtil;
import com.intellij.codeInsight.intention.IntentionAction;
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.util.TypeConversionUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Arrays;
/**
* @author Danila Ponomarenko
*/
public class RemoveRedundantArgumentsFix implements IntentionAction {
private final PsiMethod myTargetMethod;
private final PsiExpression[] myArguments;
private final PsiSubstitutor mySubstitutor;
private RemoveRedundantArgumentsFix(@NotNull PsiMethod targetMethod,
@NotNull PsiExpression[] arguments,
@NotNull PsiSubstitutor substitutor) {
myTargetMethod = targetMethod;
myArguments = arguments;
mySubstitutor = substitutor;
}
@NotNull
@Override
public String getText() {
return QuickFixBundle.message("remove.redundant.arguments.text", HighlightUtil.formatMethod(myTargetMethod));
}
@NotNull
@Override
public String getFamilyName() {
return QuickFixBundle.message("remove.redundant.arguments.family");
}
@Override
public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) {
if (!myTargetMethod.isValid() || myTargetMethod.getContainingClass() == null) return false;
for (PsiExpression expression : myArguments) {
if (!expression.isValid()) return false;
}
if (!mySubstitutor.isValid()) return false;
return findRedundantArgument(myArguments, myTargetMethod.getParameterList().getParameters(), mySubstitutor) != null;
}
@Nullable
private static PsiExpression[] findRedundantArgument(@NotNull PsiExpression[] arguments,
@NotNull PsiParameter[] parameters,
@NotNull PsiSubstitutor substitutor) {
if (arguments.length <= parameters.length) return null;
for (int i = 0; i < parameters.length; i++) {
final PsiExpression argument = arguments[i];
final PsiParameter parameter = parameters[i];
final PsiType argumentType = argument.getType();
if (argumentType == null) return null;
final PsiType parameterType = substitutor.substitute(parameter.getType());
if (!TypeConversionUtil.isAssignable(parameterType, argumentType)) {
return null;
}
}
return Arrays.copyOfRange(arguments, parameters.length, arguments.length);
}
@Override
public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException {
if (!FileModificationService.getInstance().prepareFileForWrite(file)) return;
final PsiExpression[] redundantArguments = findRedundantArgument(myArguments, myTargetMethod.getParameterList().getParameters(), mySubstitutor);
if (redundantArguments != null) {
for (PsiExpression argument : redundantArguments) {
argument.delete();
}
}
}
@Override
public boolean startInWriteAction() {
return true;
}
public static void registerIntentions(@NotNull JavaResolveResult[] candidates,
@NotNull PsiExpressionList arguments,
@Nullable HighlightInfo highlightInfo,
TextRange fixRange) {
for (JavaResolveResult candidate : candidates) {
registerIntention(arguments, highlightInfo, fixRange, candidate, arguments);
}
}
private static void registerIntention(@NotNull PsiExpressionList arguments,
@Nullable HighlightInfo highlightInfo,
TextRange fixRange,
@NotNull JavaResolveResult candidate,
@NotNull PsiElement context) {
if (!candidate.isStaticsScopeCorrect()) return;
PsiMethod method = (PsiMethod)candidate.getElement();
PsiSubstitutor substitutor = candidate.getSubstitutor();
if (method != null && context.getManager().isInProject(method)) {
QuickFixAction.registerQuickFixAction(highlightInfo, fixRange, new RemoveRedundantArgumentsFix(method, arguments.getExpressions(), substitutor));
}
}
}
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