| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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.android.tools.idea.highlight; |
| |
| import com.android.tools.idea.gradle.parser.GradleBuildFile; |
| import com.android.tools.idea.quickfix.GradleIncreaseLanguageLevelFix; |
| import com.intellij.codeInsight.daemon.impl.HighlightInfo; |
| import com.intellij.codeInsight.daemon.impl.HighlightVisitor; |
| import com.intellij.codeInsight.daemon.impl.analysis.HighlightInfoHolder; |
| import com.intellij.codeInsight.daemon.impl.analysis.IncreaseLanguageLevelFix; |
| import com.intellij.codeInsight.daemon.impl.quickfix.QuickFixAction; |
| import com.intellij.codeInsight.intention.IntentionAction; |
| import com.intellij.openapi.module.Module; |
| import com.intellij.openapi.util.Condition; |
| import com.intellij.pom.java.LanguageLevel; |
| import com.intellij.psi.JavaElementVisitor; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import org.jetbrains.android.facet.AndroidFacet; |
| import org.jetbrains.annotations.NotNull; |
| |
| import static com.intellij.openapi.module.ModuleUtilCore.findModuleForPsiElement; |
| import static com.intellij.util.ReflectionUtil.getField; |
| |
| public class AndroidHighlightVisitor extends JavaElementVisitor implements HighlightVisitor { |
| private HighlightInfoHolder myHolder = null; |
| |
| @Override |
| public void visit(@NotNull PsiElement element) { |
| if (myHolder == null) return; |
| Module contextModule = findModuleForPsiElement(element); |
| if (contextModule == null) { |
| return; |
| } |
| |
| final AndroidFacet facet = AndroidFacet.getInstance(contextModule); |
| if (facet == null) { |
| return; |
| } |
| |
| GradleBuildFile gradleBuildFile = GradleBuildFile.get(contextModule); |
| |
| for (int i = 0; i < myHolder.size(); i++) { |
| HighlightInfo info = myHolder.get(i); |
| |
| final LanguageLevel[] targetLanguageLevel = {null}; |
| |
| try { |
| info.unregisterQuickFix(new Condition<IntentionAction>() { |
| @Override |
| public boolean value(IntentionAction intentionAction) { |
| if (intentionAction.getClass() == IncreaseLanguageLevelFix.class) { |
| // TODO add accessor for IncreaseLanguageLevelFix.myLevel |
| targetLanguageLevel[0] = getField(IncreaseLanguageLevelFix.class, intentionAction, LanguageLevel.class, "myLevel"); |
| if (targetLanguageLevel[0] != null) return true; |
| } |
| return false; |
| } |
| }); |
| } |
| catch (NullPointerException e) { |
| // ignore, unregisterQuickFix doesn't have null check |
| } |
| if (targetLanguageLevel[0] == null) { |
| continue; |
| } |
| if (targetLanguageLevel[0].isAtLeast(LanguageLevel.JDK_1_8)) { |
| // We don't support Java 8 yet. |
| continue; |
| } |
| |
| if (gradleBuildFile == null) { |
| // Currently our API doesn't address the case that gradle.build file does not exist at the module folder, so just skip for now. |
| continue; |
| } |
| |
| // Notice we don't need special handling for "try with resources" feature. |
| // Though unlike other syntactic sugar in Java 7, try with resources depends on the actual Java 7 library, which is not officially |
| // supported after Android SDK 21, so we can't offer a quickfix to increase the language level to 7. |
| // But if we are not using later SDK, IDEA will first show type mismatch error instead of syntax error because it requires |
| // the resource defined to be 'AutoClosable' type. |
| |
| QuickFixAction.registerQuickFixAction(info, new GradleIncreaseLanguageLevelFix(targetLanguageLevel[0], gradleBuildFile)); |
| // TODO when we can't increase the language level, maybe we should change the highlight text to reflect that. |
| } |
| } |
| |
| @Override |
| public boolean analyze(@NotNull PsiFile file, boolean updateWholeFile, @NotNull HighlightInfoHolder holder, @NotNull Runnable action) { |
| myHolder = holder; |
| try { |
| action.run(); |
| } |
| finally { |
| myHolder = null; |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean suitableForFile(@NotNull PsiFile file) { |
| return true; |
| } |
| |
| @NotNull |
| @Override |
| public AndroidHighlightVisitor clone() { |
| return new AndroidHighlightVisitor(); |
| } |
| |
| @Override |
| public int order() { |
| return 0; |
| } |
| } |