| /* |
| * Copyright 2000-2009 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. |
| */ |
| |
| /* |
| * @author max |
| */ |
| package com.intellij.psi.impl.source.codeStyle; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.fileTypes.FileType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.JavaTokenType; |
| import com.intellij.psi.impl.source.tree.CompositeElement; |
| import com.intellij.psi.impl.source.tree.JavaElementType; |
| import com.intellij.psi.impl.source.tree.TreeUtil; |
| |
| public class JavaIndentHelper extends IndentHelperImpl { |
| @Override |
| protected int getIndentInner(Project project, |
| FileType fileType, |
| final ASTNode element, |
| final boolean includeNonSpace, |
| final int recursionLevel) { |
| if (recursionLevel > TOO_BIG_WALK_THRESHOLD) return 0; |
| |
| if (element.getTreePrev() != null) { |
| ASTNode prev = element.getTreePrev(); |
| while (prev instanceof CompositeElement && !TreeUtil.isStrongWhitespaceHolder(prev.getElementType())) { |
| ASTNode lastCompositePrev = prev; |
| prev = prev.getLastChildNode(); |
| if (prev == null) { // element.prev is "empty composite" |
| return getIndentInner(project, fileType, lastCompositePrev, includeNonSpace, recursionLevel + 1); |
| } |
| } |
| |
| String text = prev.getText(); |
| int index = Math.max(text.lastIndexOf('\n'), text.lastIndexOf('\r')); |
| |
| if (index >= 0) { |
| return getIndent(project, fileType, text.substring(index + 1), includeNonSpace); |
| } |
| |
| if (includeNonSpace) { |
| return getIndentInner(project, fileType, prev, includeNonSpace, recursionLevel + 1) + getIndent(project, fileType, text, includeNonSpace); |
| } |
| |
| if (element.getElementType() == JavaElementType.CODE_BLOCK) { |
| ASTNode parent = element.getTreeParent(); |
| if (parent.getElementType() == JavaElementType.BLOCK_STATEMENT) { |
| parent = parent.getTreeParent(); |
| } |
| if (parent.getElementType() != JavaElementType.CODE_BLOCK) { |
| //Q: use some "anchor" part of parent for some elements? |
| // e.g. for method it could be declaration start, not doc-comment |
| return getIndentInner(project, fileType, parent, includeNonSpace, recursionLevel + 1); |
| } |
| } |
| else { |
| if (element.getElementType() == JavaTokenType.LBRACE) { |
| return getIndentInner(project, fileType, element.getTreeParent(), includeNonSpace, recursionLevel + 1); |
| } |
| } |
| //Q: any other cases? |
| |
| ASTNode parent = prev.getTreeParent(); |
| ASTNode child = prev; |
| while (parent != null) { |
| if (child.getTreePrev() != null) break; |
| child = parent; |
| parent = parent.getTreeParent(); |
| } |
| |
| if (parent == null) { |
| return getIndent(project, fileType, text, includeNonSpace); |
| } |
| else { |
| if (prev.getTreeParent().getElementType() == JavaElementType.LABELED_STATEMENT) { |
| return getIndentInner(project, fileType, prev, true, recursionLevel + 1) + getIndent(project, fileType, text, true); |
| } |
| else |
| return getIndentInner(project, fileType, prev, includeNonSpace, recursionLevel + 1); |
| } |
| } |
| else { |
| if (element.getTreeParent() == null) { |
| return 0; |
| } |
| return getIndentInner(project, fileType, element.getTreeParent(), includeNonSpace, recursionLevel + 1); |
| } |
| } |
| } |