| /* |
| * Copyright 2000-2014 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.intellij.psi.impl.source.tree.java; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.impl.source.Constants; |
| import com.intellij.psi.impl.source.tree.ChildRole; |
| import com.intellij.psi.impl.source.tree.CompositeElement; |
| import com.intellij.psi.impl.source.tree.JavaSourceUtil; |
| import com.intellij.psi.impl.source.tree.TreeElement; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class ParameterListElement extends CompositeElement implements Constants { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.ParameterListElement"); |
| private static final TokenSet PARAMETER_SET = TokenSet.create(PARAMETER); |
| |
| public ParameterListElement() { |
| super(PARAMETER_LIST); |
| } |
| |
| @Override |
| public TreeElement addInternal(TreeElement first, ASTNode last, ASTNode anchor, Boolean before) { |
| if (anchor == null) { |
| if (before == null || before.booleanValue()) { |
| anchor = findChildByRole(ChildRole.RPARENTH); |
| before = Boolean.TRUE; |
| } |
| else { |
| anchor = findChildByRole(ChildRole.LPARENTH); |
| before = Boolean.FALSE; |
| } |
| } |
| TreeElement firstAdded = super.addInternal(first, last, anchor, before); |
| if (first == last && first.getElementType() == PARAMETER) { |
| JavaSourceUtil.addSeparatingComma(this, first, PARAMETER_SET); |
| } |
| |
| //todo[max] hack? |
| try { |
| CodeStyleManager.getInstance(getManager().getProject()).reformat(getPsi()); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| return firstAdded; |
| } |
| |
| @Override |
| public void deleteChildInternal(@NotNull ASTNode child) { |
| final TreeElement oldLastNodeInsideParens = getLastNodeInsideParens(); |
| final TreeElement oldFirstNodeInsideParens = getFirstNodeInsideParens(); |
| if (child.getElementType() == PARAMETER) { |
| JavaSourceUtil.deleteSeparatingComma(this, child); |
| } |
| super.deleteChildInternal(child); |
| |
| // We may want to fix trailing white space processing here - there is a following possible case: |
| // *) this parameter list is like (arg1, <white-space-containing-line-breaks>, arg2); |
| // *) 'arg2' is to be removed; |
| // We don't want to keep trailing white space then |
| TreeElement newLastNodeInsideParens = getLastNodeInsideParens(); |
| if (newLastNodeInsideParens != null && newLastNodeInsideParens.getElementType() == WHITE_SPACE) { |
| if (oldLastNodeInsideParens.getElementType() != WHITE_SPACE) { |
| deleteChildInternal(newLastNodeInsideParens); |
| } else { |
| replaceChild(newLastNodeInsideParens, (ASTNode)oldLastNodeInsideParens.clone()); |
| } |
| } |
| |
| final TreeElement newFirstNodeInsideParens = getFirstNodeInsideParens(); |
| if (newFirstNodeInsideParens != null && newFirstNodeInsideParens.getElementType() == WHITE_SPACE) { |
| if (oldFirstNodeInsideParens == null || oldFirstNodeInsideParens.getElementType() != WHITE_SPACE) { |
| deleteChildInternal(newFirstNodeInsideParens); |
| } else { |
| replaceChild(newFirstNodeInsideParens, (ASTNode)oldFirstNodeInsideParens.clone()); |
| } |
| } |
| |
| //todo[max] hack? |
| try { |
| CodeStyleManager.getInstance(getManager().getProject()).reformat(getPsi()); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| |
| @Override |
| public ASTNode findChildByRole(int role) { |
| LOG.assertTrue(ChildRole.isUnique(role)); |
| switch (role) { |
| default: |
| return null; |
| |
| case ChildRole.LPARENTH: |
| TreeElement firstNode = getFirstChildNode(); |
| return firstNode.getElementType() == LPARENTH ? firstNode : null; |
| |
| case ChildRole.RPARENTH: |
| TreeElement lastNode = getLastChildNode(); |
| return lastNode.getElementType() == RPARENTH ? lastNode : null; |
| } |
| } |
| |
| @Override |
| public int getChildRole(ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| IElementType i = child.getElementType(); |
| if (i == PARAMETER) { |
| return ChildRole.PARAMETER; |
| } |
| else if (i == COMMA) { |
| return ChildRole.COMMA; |
| } |
| else if (i == LPARENTH) { |
| return getChildRole(child, ChildRole.LPARENTH); |
| } |
| else if (i == RPARENTH) { |
| return getChildRole(child, ChildRole.RPARENTH); |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| |
| /** |
| * @return last node before closing right paren if possible; <code>null</code> otherwise |
| */ |
| @Nullable |
| private TreeElement getLastNodeInsideParens() { |
| TreeElement lastNode = getLastChildNode(); |
| return lastNode.getElementType() == RPARENTH ? lastNode.getTreePrev() : null; |
| } |
| |
| /** |
| * @return first node after opening left paren if possible; <code>null</code> otherwise |
| */ |
| @Nullable |
| private TreeElement getFirstNodeInsideParens() { |
| TreeElement firstNode = getFirstChildNode(); |
| return firstNode.getElementType() == LPARENTH ? firstNode.getTreeNext() : null; |
| } |
| } |