| /* |
| * 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 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.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.*; |
| import com.intellij.psi.infos.CandidateInfo; |
| import com.intellij.psi.infos.MethodCandidateInfo; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import static com.intellij.psi.CommonClassNames.JAVA_LANG_STRING; |
| |
| public class ChangeStringLiteralToCharInMethodCallFix implements IntentionAction { |
| private final PsiLiteralExpression myLiteral; |
| private final PsiCall myCall; |
| |
| public ChangeStringLiteralToCharInMethodCallFix(final PsiLiteralExpression literal, final PsiCall methodCall) { |
| myLiteral = literal; |
| myCall = methodCall; |
| } |
| |
| @Override |
| @NotNull |
| public String getText() { |
| final String convertedValue = convertedValue(); |
| final boolean isString = isString(myLiteral.getType()); |
| return QuickFixBundle.message("fix.single.character.string.to.char.literal.text", myLiteral.getText(), |
| quote(convertedValue, ! isString), isString ? PsiType.CHAR.getCanonicalText() : "String"); |
| } |
| |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return QuickFixBundle.message("fix.single.character.string.to.char.literal.family"); |
| } |
| |
| @Override |
| public boolean isAvailable(@NotNull final Project project, final Editor editor, final PsiFile file) { |
| return myCall.isValid() && myLiteral.isValid() && myCall.getManager().isInProject(myCall); |
| } |
| |
| @Override |
| public void invoke(@NotNull final Project project, final Editor editor, final PsiFile file) throws IncorrectOperationException { |
| if (!FileModificationService.getInstance().prepareFileForWrite(file)) return; |
| |
| final Object value = myLiteral.getValue(); |
| if (value != null && value.toString().length() == 1) { |
| final PsiElementFactory factory = JavaPsiFacade.getInstance(project).getElementFactory(); |
| |
| final PsiExpression newExpression = factory.createExpressionFromText(quote(convertedValue(), ! isString(myLiteral.getType())), |
| myLiteral.getParent()); |
| myLiteral.replace(newExpression); |
| } |
| } |
| |
| @Override |
| public boolean startInWriteAction() { |
| return true; |
| } |
| |
| private static String quote(final String value, final boolean doubleQuotes) { |
| final char quote = doubleQuotes ? '"' : '\''; |
| return quote + value + quote; |
| } |
| |
| private String convertedValue() { |
| String value = String.valueOf(myLiteral.getValue()); |
| final StringBuilder builder = new StringBuilder(); |
| StringUtil.escapeStringCharacters(value.length(), value, "\"'", builder); |
| return builder.toString(); |
| } |
| |
| public static void registerFixes(@NotNull final PsiMethod[] candidates, @NotNull final PsiConstructorCall call, |
| @NotNull final HighlightInfo out) { |
| final Set<PsiLiteralExpression> literals = new HashSet<PsiLiteralExpression>(); |
| if (call.getArgumentList() == null) { |
| return; |
| } |
| boolean exactMatch = false; |
| for (PsiMethod method : candidates) { |
| exactMatch |= findMatchingExpressions(call.getArgumentList().getExpressions(), method, literals); |
| } |
| if (! exactMatch) { |
| processLiterals(literals, call, out); |
| } |
| } |
| |
| public static void registerFixes(@NotNull final CandidateInfo[] candidates, |
| @NotNull final PsiMethodCallExpression methodCall, |
| @Nullable final HighlightInfo info) { |
| if (info == null) return; |
| final Set<PsiLiteralExpression> literals = new HashSet<PsiLiteralExpression>(); |
| boolean exactMatch = false; |
| for (CandidateInfo candidate : candidates) { |
| if (candidate instanceof MethodCandidateInfo) { |
| final PsiMethod method = ((MethodCandidateInfo) candidate).getElement(); |
| exactMatch |= findMatchingExpressions(methodCall.getArgumentList().getExpressions(), method, literals); |
| } |
| } |
| if (!exactMatch) { |
| processLiterals(literals, methodCall, info); |
| } |
| } |
| |
| private static void processLiterals(@NotNull final Set<PsiLiteralExpression> literals, |
| @NotNull final PsiCall call, |
| @NotNull final HighlightInfo info) { |
| for (PsiLiteralExpression literal : literals) { |
| final ChangeStringLiteralToCharInMethodCallFix fix = new ChangeStringLiteralToCharInMethodCallFix(literal, call); |
| QuickFixAction.registerQuickFixAction(info, fix); |
| } |
| } |
| |
| /** |
| * @return <code>true</code> if exact TYPEs match |
| */ |
| private static boolean findMatchingExpressions(final PsiExpression[] arguments, final PsiMethod existingMethod, |
| final Set<PsiLiteralExpression> result) { |
| final PsiParameterList parameterList = existingMethod.getParameterList(); |
| final PsiParameter[] parameters = parameterList.getParameters(); |
| |
| if (arguments.length != parameters.length) { |
| return false; |
| } |
| |
| boolean typeMatch = true; |
| for (int i = 0; i < parameters.length && i < arguments.length; i++) { |
| final PsiParameter parameter = parameters[i]; |
| final PsiType parameterType = parameter.getType(); |
| final PsiType argumentType = arguments[i].getType(); |
| |
| typeMatch &= Comparing.equal(parameterType, argumentType); |
| |
| if (arguments[i] instanceof PsiLiteralExpression && ! result.contains(arguments[i]) && |
| (charToString(parameterType, argumentType) || charToString(argumentType, parameterType))) { |
| |
| final String value = String.valueOf(((PsiLiteralExpression) arguments[i]).getValue()); |
| if (value != null && value.length() == 1) { |
| result.add((PsiLiteralExpression) arguments[i]); |
| } |
| } |
| } |
| return typeMatch; |
| } |
| |
| private static boolean charToString(final PsiType firstType, final PsiType secondType) { |
| return Comparing.equal(PsiType.CHAR, firstType) && isString(secondType); |
| } |
| |
| private static boolean isString(final PsiType type) { |
| return type != null && type.equalsToText(JAVA_LANG_STRING); |
| } |
| } |