| /* |
| * Copyright 2000-2012 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 org.jetbrains.plugins.groovy.editor.actions.joinLines; |
| |
| |
| import com.intellij.codeInsight.editorActions.JoinRawLinesHandlerDelegate; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.TokenType; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyFileBase; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrStatement; |
| import org.jetbrains.plugins.groovy.lang.psi.api.util.GrStatementOwner; |
| |
| public abstract class GrJoinLinesHandlerBase implements JoinRawLinesHandlerDelegate { |
| private static final boolean BACK = false; |
| private static final boolean FORWARD = false; |
| |
| @Override |
| public int tryJoinRawLines(Document document, PsiFile file, int start, int end) { |
| if (!(file instanceof GroovyFileBase)) return CANNOT_JOIN; |
| final PsiElement element = file.findElementAt(end); |
| final GrStatementOwner statementOwner = PsiTreeUtil.getParentOfType(element, GrStatementOwner.class, true, GroovyFileBase.class); |
| if (statementOwner == null) return CANNOT_JOIN; |
| |
| GrStatement first = null; |
| GrStatement last = null; |
| for (PsiElement child = statementOwner.getFirstChild(); child != null; child = child.getNextSibling()) { |
| final TextRange range = child.getTextRange(); |
| if (range.getEndOffset() == start) { |
| first = skipSemicolonsAndWhitespaces(child, BACK); |
| } |
| else if (range.getStartOffset() == end) { |
| last = skipSemicolonsAndWhitespaces(child, FORWARD); |
| } |
| |
| } |
| if (last == null || first == null) return CANNOT_JOIN; |
| return tryJoinStatements(first, last); |
| } |
| |
| @Override |
| public int tryJoinLines(Document document, PsiFile file, int start, int end) { |
| return CANNOT_JOIN; |
| } |
| |
| @Nullable |
| private static GrStatement skipSemicolonsAndWhitespaces(PsiElement child, boolean forward) { |
| while (child != null && !(child instanceof GrStatement)) { |
| final IElementType type = child.getNode().getElementType(); |
| if (type != GroovyTokenTypes.mSEMI && !(type == TokenType.WHITE_SPACE && !child.getText().contains("\n"))) return null; |
| child = forward ? child.getNextSibling() : child.getPrevSibling(); |
| } |
| return (GrStatement)child; |
| } |
| |
| public abstract int tryJoinStatements(@NotNull GrStatement first, @NotNull GrStatement second); |
| } |