| /* |
| * 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.intentions; |
| |
| import com.intellij.codeInsight.intention.impl.BaseIntentionAction; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiComment; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.jetbrains.python.PyBundle; |
| import com.jetbrains.python.PyTokenTypes; |
| import com.jetbrains.python.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * User: catherine |
| * Intention to merge the if clauses in the case of nested ifs where only the inner if contains code (the outer if only contains the inner one) |
| * For instance, |
| * if a: |
| * if b: |
| * # stuff here |
| * into |
| * if a and b: |
| * #stuff here |
| */ |
| public class PyJoinIfIntention extends BaseIntentionAction { |
| @NotNull |
| public String getFamilyName() { |
| return PyBundle.message("INTN.join.if"); |
| } |
| |
| @NotNull |
| public String getText() { |
| return PyBundle.message("INTN.join.if.text"); |
| } |
| |
| public boolean isAvailable(@NotNull Project project, Editor editor, PsiFile file) { |
| if (!(file instanceof PyFile)) { |
| return false; |
| } |
| |
| PyIfStatement expression = |
| PsiTreeUtil.getParentOfType(file.findElementAt(editor.getCaretModel().getOffset()), PyIfStatement.class); |
| |
| PyIfStatement outer = getIfStatement(expression); |
| if (outer != null) { |
| if (outer.getElsePart() != null || outer.getElifParts().length > 0) return false; |
| PyStatement firstStatement = getFirstStatement(outer); |
| PyStatementList outerStList = outer.getIfPart().getStatementList(); |
| if (outerStList != null && outerStList.getStatements().length != 1) return false; |
| if (firstStatement instanceof PyIfStatement) { |
| final PyIfStatement inner = (PyIfStatement)firstStatement; |
| if (inner.getElsePart() != null || inner.getElifParts().length > 0) return false; |
| PyStatementList stList = inner.getIfPart().getStatementList(); |
| if (stList != null) |
| if (stList.getStatements().length != 0) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public void invoke(@NotNull Project project, Editor editor, PsiFile file) throws IncorrectOperationException { |
| PyIfStatement expression = |
| PsiTreeUtil.getParentOfType(file.findElementAt(editor.getCaretModel().getOffset()), PyIfStatement.class); |
| PyIfStatement ifStatement = getIfStatement(expression); |
| |
| PyStatement firstStatement = getFirstStatement(ifStatement); |
| if (ifStatement == null) return; |
| if (firstStatement != null && firstStatement instanceof PyIfStatement) { |
| PyExpression condition = ((PyIfStatement)firstStatement).getIfPart().getCondition(); |
| PyElementGenerator elementGenerator = PyElementGenerator.getInstance(project); |
| PyExpression ifCondition = ifStatement.getIfPart().getCondition(); |
| if (ifCondition == null || condition == null) return; |
| StringBuilder replacementText = new StringBuilder(ifCondition.getText() + " and "); |
| if (condition instanceof PyBinaryExpression && ((PyBinaryExpression)condition).getOperator() == PyTokenTypes.OR_KEYWORD) { |
| replacementText.append("(").append(condition.getText()).append(")"); |
| } else |
| replacementText.append(condition.getText()); |
| |
| PyExpression newCondition = elementGenerator.createExpressionFromText(replacementText.toString()); |
| ifCondition.replace(newCondition); |
| |
| PyStatementList stList = ((PyIfStatement)firstStatement).getIfPart().getStatementList(); |
| PyStatementList ifStatementList = ifStatement.getIfPart().getStatementList(); |
| if (ifStatementList == null || stList == null) return; |
| List<PsiComment> comments = PsiTreeUtil.getChildrenOfTypeAsList(ifStatement.getIfPart(), PsiComment.class); |
| comments.addAll(PsiTreeUtil.getChildrenOfTypeAsList(((PyIfStatement)firstStatement).getIfPart(), PsiComment.class)); |
| comments.addAll(PsiTreeUtil.getChildrenOfTypeAsList(ifStatementList, PsiComment.class)); |
| comments.addAll(PsiTreeUtil.getChildrenOfTypeAsList(stList, PsiComment.class)); |
| |
| for (PsiElement comm : comments) { |
| ifStatement.getIfPart().addBefore(comm, ifStatementList); |
| comm.delete(); |
| } |
| ifStatementList.replace(stList); |
| } |
| } |
| |
| @Nullable |
| private static PyStatement getFirstStatement(PyIfStatement ifStatement) { |
| PyStatement firstStatement = null; |
| if (ifStatement != null) { |
| PyStatementList stList = ifStatement.getIfPart().getStatementList(); |
| if (stList != null) { |
| if (stList.getStatements().length != 0) { |
| firstStatement = stList.getStatements()[0]; |
| } |
| } |
| } |
| return firstStatement; |
| } |
| |
| @Nullable |
| private static PyIfStatement getIfStatement(PyIfStatement expression) { |
| while (expression != null) { |
| PyStatementList stList = expression.getIfPart().getStatementList(); |
| if (stList != null) { |
| if (stList.getStatements().length != 0) { |
| PyStatement firstStatement = stList.getStatements()[0]; |
| if (firstStatement instanceof PyIfStatement) { |
| break; |
| } |
| } |
| } |
| expression = PsiTreeUtil.getParentOfType(expression, PyIfStatement.class); |
| } |
| return expression; |
| } |
| } |