| /* |
| * 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.lang; |
| |
| import com.intellij.codeInsight.editorActions.smartEnter.SmartEnterProcessor; |
| import com.intellij.codeInsight.lookup.LookupManager; |
| import com.intellij.featureStatistics.FeatureUsageTracker; |
| import com.intellij.openapi.actionSystem.IdeActions; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.actionSystem.EditorActionHandler; |
| import com.intellij.openapi.editor.actionSystem.EditorActionManager; |
| import com.intellij.openapi.editor.ex.EditorEx; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.util.containers.ContainerUtil; |
| import com.intellij.util.containers.OrderedSet; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * @author ignatov |
| */ |
| public abstract class SmartEnterProcessorWithFixers extends SmartEnterProcessor { |
| protected static final Logger LOG = Logger.getInstance(SmartEnterProcessorWithFixers.class); |
| protected static final int MAX_ATTEMPTS = 20; |
| protected static final Key<Long> SMART_ENTER_TIMESTAMP = Key.create("smartEnterOriginalTimestamp"); |
| |
| protected int myFirstErrorOffset = Integer.MAX_VALUE; |
| |
| private final List<Fixer<? extends SmartEnterProcessorWithFixers>> myFixers = new ArrayList<Fixer<? extends SmartEnterProcessorWithFixers>>(); |
| private final List<FixEnterProcessor> myEnterProcessors = new ArrayList<FixEnterProcessor>(); |
| |
| protected static void plainEnter(@NotNull final Editor editor) { |
| getEnterHandler().execute(editor, ((EditorEx)editor).getDataContext()); |
| } |
| |
| protected static EditorActionHandler getEnterHandler() { |
| return EditorActionManager.getInstance().getActionHandler(IdeActions.ACTION_EDITOR_START_NEW_LINE); |
| } |
| |
| protected static boolean isModified(@NotNull final Editor editor) { |
| final Long timestamp = editor.getUserData(SMART_ENTER_TIMESTAMP); |
| assert timestamp != null; |
| return editor.getDocument().getModificationStamp() != timestamp.longValue(); |
| } |
| |
| public boolean doNotStepInto(PsiElement element) { |
| return false; |
| } |
| |
| @Override |
| public boolean process(@NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile psiFile) { |
| final Document document = editor.getDocument(); |
| final String textForRollback = document.getText(); |
| try { |
| editor.putUserData(SMART_ENTER_TIMESTAMP, editor.getDocument().getModificationStamp()); |
| myFirstErrorOffset = Integer.MAX_VALUE; |
| process(project, editor, psiFile, 0); |
| } |
| catch (TooManyAttemptsException e) { |
| document.replaceString(0, document.getTextLength(), textForRollback); |
| } |
| finally { |
| editor.putUserData(SMART_ENTER_TIMESTAMP, null); |
| } |
| return true; |
| } |
| |
| protected void process(@NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile file, final int attempt) |
| throws TooManyAttemptsException { |
| FeatureUsageTracker.getInstance().triggerFeatureUsed("codeassists.complete.statement"); |
| if (attempt > MAX_ATTEMPTS) throw new TooManyAttemptsException(); |
| |
| try { |
| commit(editor); |
| if (myFirstErrorOffset != Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| } |
| |
| myFirstErrorOffset = Integer.MAX_VALUE; |
| |
| PsiElement atCaret = getStatementAtCaret(editor, file); |
| if (atCaret == null) { |
| return; |
| } |
| |
| OrderedSet<PsiElement> queue = new OrderedSet<PsiElement>(); |
| collectAllElements(atCaret, queue, true); |
| queue.add(atCaret); |
| |
| for (PsiElement psiElement : queue) { |
| for (Fixer fixer : myFixers) { |
| fixer.apply(editor, this, psiElement); |
| if (LookupManager.getInstance(project).getActiveLookup() != null) { |
| return; |
| } |
| if (isUncommited(project) || !psiElement.isValid()) { |
| moveCaretInsideBracesIfAny(editor, file); |
| process(project, editor, file, attempt + 1); |
| return; |
| } |
| } |
| } |
| |
| doEnter(atCaret, file, editor); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| |
| protected void collectAllElements(@NotNull PsiElement element, @NotNull OrderedSet<PsiElement> result, boolean recursive) { |
| result.add(0, element); |
| if (doNotStepInto(element)) { |
| if (!recursive) return; |
| recursive = false; |
| } |
| |
| collectAdditionalElements(element, result); |
| |
| for (PsiElement child : element.getChildren()) { |
| collectAllElements(child, result, recursive); |
| } |
| } |
| |
| protected void doEnter(@NotNull PsiElement atCaret, @NotNull PsiFile file, @NotNull Editor editor) throws IncorrectOperationException { |
| if (myFirstErrorOffset != Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| reformat(atCaret); |
| return; |
| } |
| |
| reformat(atCaret); |
| commit(editor); |
| |
| for (FixEnterProcessor enterProcessor : myEnterProcessors) { |
| if (enterProcessor.doEnter(atCaret, file, editor, isModified(editor))) { |
| return; |
| } |
| } |
| |
| if (!isModified(editor)) { |
| plainEnter(editor); |
| } |
| else { |
| if (myFirstErrorOffset == Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(atCaret.getTextRange().getEndOffset()); |
| } |
| else { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| } |
| } |
| } |
| |
| protected void addEnterProcessors(FixEnterProcessor... processors) { |
| ContainerUtil.addAllNotNull(myEnterProcessors, processors); |
| } |
| |
| protected void addFixers(Fixer<? extends SmartEnterProcessorWithFixers>... fixers) { |
| ContainerUtil.addAllNotNull(myFixers, fixers); |
| } |
| |
| protected void collectAdditionalElements(@NotNull PsiElement element, @NotNull List<PsiElement> result) { |
| } |
| |
| protected void moveCaretInsideBracesIfAny(@NotNull Editor editor, @NotNull PsiFile file) throws IncorrectOperationException { |
| } |
| |
| public static class TooManyAttemptsException extends Exception { |
| } |
| |
| public abstract static class Fixer<P extends SmartEnterProcessorWithFixers> { |
| abstract public void apply(@NotNull Editor editor, @NotNull P processor, @NotNull PsiElement element) throws IncorrectOperationException; |
| } |
| |
| public abstract static class FixEnterProcessor { |
| abstract public boolean doEnter(PsiElement atCaret, PsiFile file, @NotNull Editor editor, boolean modified); |
| |
| protected void plainEnter(@NotNull Editor editor) { |
| SmartEnterProcessorWithFixers.plainEnter(editor); |
| } |
| } |
| |
| @Override |
| public void commit(@NotNull Editor editor) { // pull up |
| super.commit(editor); |
| } |
| } |