| /* |
| * Copyright 2000-2013 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.jetbrains.python.codeInsight.editorActions.smartEnter; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.intellij.codeInsight.editorActions.smartEnter.SmartEnterProcessor; |
| import com.intellij.codeInsight.lookup.LookupManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| 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.psi.PsiWhiteSpace; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.jetbrains.python.codeInsight.editorActions.smartEnter.enterProcessors.EnterProcessor; |
| import com.jetbrains.python.codeInsight.editorActions.smartEnter.enterProcessors.PyCommentBreakerEnterProcessor; |
| import com.jetbrains.python.codeInsight.editorActions.smartEnter.enterProcessors.PyPlainEnterProcessor; |
| import com.jetbrains.python.codeInsight.editorActions.smartEnter.fixers.*; |
| import com.jetbrains.python.psi.PyFile; |
| import com.jetbrains.python.psi.PyStatement; |
| import com.jetbrains.python.psi.PyStatementList; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * Author: Alexey.Ivanov |
| * Date: 15.04.2010 |
| * Time: 15:55:57 |
| */ |
| public class PySmartEnterProcessor extends SmartEnterProcessor { |
| private static final Logger LOG = Logger.getInstance("#com.jetbrains.python.codeInsight.editorActions.smartEnter.PySmartEnterProcessor"); |
| private static final List<PyFixer> ourFixers = ImmutableList.<PyFixer>builder() |
| .add(new PyStringLiteralFixer()) |
| .add(new PyParenthesizedFixer()) |
| .add(new PyMissingBracesFixer()) |
| .add(new PyConditionalStatementPartFixer()) |
| .add(new PyUnconditionalStatementPartFixer()) |
| .add(new PyForPartFixer()) |
| .add(new PyExceptFixer()) |
| .add(new PyArgumentListFixer()) |
| .add(new PyParameterListFixer()) |
| .add(new PyFunctionFixer()) |
| .add(new PyClassFixer()) |
| .add(new PyWithFixer()) |
| .build(); |
| private static final List<EnterProcessor> ourProcessors = ImmutableList.of(new PyCommentBreakerEnterProcessor(), |
| new PyPlainEnterProcessor()); |
| |
| private static class TooManyAttemptsException extends Exception { |
| } |
| |
| private static void collectAllElements(final PsiElement element, @NotNull final List<PsiElement> result, boolean recurse) { |
| result.add(0, element); |
| if (doNotStep(element)) { |
| if (!recurse) { |
| return; |
| } |
| recurse = false; |
| } |
| |
| final PsiElement[] children = element.getChildren(); |
| for (final PsiElement child : children) { |
| if (element instanceof PyStatement && child instanceof PyStatement) { |
| continue; |
| } |
| collectAllElements(child, result, recurse); |
| } |
| } |
| |
| private static boolean doNotStep(final PsiElement element) { |
| return (element instanceof PyStatementList) || (element instanceof PyStatement); |
| } |
| |
| private static boolean isModified(@NotNull final Editor editor) { |
| final Long timestamp = editor.getUserData(SMART_ENTER_TIMESTAMP); |
| return editor.getDocument().getModificationStamp() != timestamp.longValue(); |
| } |
| |
| private int myFirstErrorOffset = Integer.MAX_VALUE; |
| private static final int MAX_ATTEMPTS = 20; |
| private static final Key<Long> SMART_ENTER_TIMESTAMP = Key.create("smartEnterOriginalTimestamp"); |
| |
| @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(); |
| final int offset = editor.getCaretModel().getOffset(); |
| try { |
| editor.putUserData(SMART_ENTER_TIMESTAMP, editor.getDocument().getModificationStamp()); |
| myFirstErrorOffset = Integer.MAX_VALUE; |
| process(project, editor, psiFile, 0); |
| } |
| catch (TooManyAttemptsException e) { |
| LOG.info(e); |
| document.replaceString(0, document.getTextLength(), textForRollBack); |
| editor.getCaretModel().moveToOffset(offset); |
| } |
| finally { |
| editor.putUserData(SMART_ENTER_TIMESTAMP, null); |
| } |
| return true; |
| } |
| |
| private void process(@NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile psiFile, final int attempt) |
| throws TooManyAttemptsException { |
| if (attempt > MAX_ATTEMPTS) { |
| throw new TooManyAttemptsException(); |
| } |
| |
| try { |
| commit(editor); |
| if (myFirstErrorOffset != Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| } |
| |
| //myFirstErrorOffset = Integer.MAX_VALUE; |
| |
| PsiElement statementAtCaret = getStatementAtCaret(editor, psiFile); |
| if (statementAtCaret == null) { |
| if (!new PyCommentBreakerEnterProcessor().doEnter(editor, psiFile, false)) { |
| SmartEnterUtil.plainEnter(editor); |
| } |
| return; |
| } |
| |
| List<PsiElement> queue = new ArrayList<PsiElement>(); |
| collectAllElements(statementAtCaret, queue, true); |
| queue.add(statementAtCaret); |
| |
| for (PsiElement element : queue) { |
| for (PyFixer fixer : ourFixers) { |
| fixer.apply(editor, this, element); |
| if (LookupManager.getInstance(project).getActiveLookup() != null) { |
| return; |
| } |
| if (isUncommited(project) || !element.isValid()) { |
| process(project, editor, psiFile, attempt + 1); |
| return; |
| } |
| } |
| } |
| |
| doEnter(statementAtCaret, editor); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| |
| private void doEnter(final PsiElement atCaret, final Editor editor) { |
| if (myFirstErrorOffset != Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| return; |
| } |
| commit(editor); |
| |
| for (EnterProcessor enterProcessor : ourProcessors) { |
| if (enterProcessor.doEnter(editor, atCaret, isModified(editor))) { |
| return; |
| } |
| } |
| |
| if (!isModified(editor)) { |
| SmartEnterUtil.plainEnter(editor); |
| } |
| else { |
| if (myFirstErrorOffset == Integer.MAX_VALUE) { |
| editor.getCaretModel().moveToOffset(atCaret.getTextRange().getEndOffset()); |
| } |
| else { |
| editor.getCaretModel().moveToOffset(myFirstErrorOffset); |
| } |
| } |
| } |
| |
| @Nullable |
| protected PsiElement getStatementAtCaret(Editor editor, PsiFile psiFile) { |
| PsiElement statementAtCaret = super.getStatementAtCaret(editor, psiFile); |
| |
| if (statementAtCaret instanceof PsiWhiteSpace) { |
| return null; |
| } |
| if (statementAtCaret == null) { |
| return null; |
| } |
| |
| final PyStatementList statementList = PsiTreeUtil.getParentOfType(statementAtCaret, PyStatementList.class, false); |
| if (statementList != null) { |
| for (PyStatement statement : statementList.getStatements()) { |
| if (PsiTreeUtil.isAncestor(statement, statementAtCaret, true)) { |
| return statement; |
| } |
| } |
| } |
| else { |
| final PyFile file = PsiTreeUtil.getParentOfType(statementAtCaret, PyFile.class, false); |
| if (file != null) { |
| for (PyStatement statement : file.getStatements()) { |
| if (PsiTreeUtil.isAncestor(statement, statementAtCaret, true)) { |
| return statement; |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| public void registerUnresolvedError(int offset) { |
| if (offset < myFirstErrorOffset) { |
| myFirstErrorOffset = offset; |
| } |
| } |
| } |