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/*
* 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.fixers;
import com.intellij.lang.ASTNode;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.psi.PsiElement;
import com.intellij.util.IncorrectOperationException;
import com.jetbrains.python.PyTokenTypes;
import com.jetbrains.python.codeInsight.editorActions.smartEnter.PySmartEnterProcessor;
import com.jetbrains.python.psi.PyElementType;
import com.jetbrains.python.psi.PyExpression;
import com.jetbrains.python.psi.PyWithItem;
import com.jetbrains.python.psi.PyWithStatement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import static com.jetbrains.python.psi.PyUtil.sure;
/**
* @author Mikhail Golubev
*/
public class PyWithFixer implements PyFixer {
public void apply(Editor editor, PySmartEnterProcessor processor, PsiElement psiElement) throws IncorrectOperationException {
if (psiElement instanceof PyWithStatement) {
final PyWithStatement withStatement = (PyWithStatement)psiElement;
final PsiElement colonToken = getFirstChildOfType(psiElement, PyTokenTypes.COLON);
final PsiElement withToken = getFirstChildOfType(withStatement, PyTokenTypes.WITH_KEYWORD);
final Document document = editor.getDocument();
if (colonToken == null) {
int insertAt = sure(withToken).getTextRange().getEndOffset();
String textToInsert = ":";
final PyWithItem[] withItems = withStatement.getWithItems();
final PyWithItem lastItem = withItems.length != 0 ? withItems[withItems.length - 1] : null;
if (lastItem == null || lastItem.getExpression() == null) {
textToInsert = " :";
processor.registerUnresolvedError(insertAt + 1);
}
else {
final PyExpression expression = lastItem.getExpression();
insertAt = expression.getTextRange().getEndOffset();
final PsiElement asToken = getFirstChildOfType(lastItem, PyTokenTypes.AS_KEYWORD);
if (asToken != null) {
insertAt = asToken.getTextRange().getEndOffset();
final PyExpression target = lastItem.getTarget();
if (target != null) {
insertAt = target.getTextRange().getEndOffset();
}
else {
textToInsert = " :";
processor.registerUnresolvedError(insertAt + 1);
}
}
}
document.insertString(insertAt, textToInsert);
}
}
}
@Nullable
private static PsiElement getFirstChildOfType(@NotNull final PsiElement element, @NotNull PyElementType type) {
final ASTNode child = element.getNode().findChildByType(type);
return child != null ? child.getPsi() : null;
}
}
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