| /* |
| * 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.JavaTokenType; |
| import com.intellij.psi.impl.PsiImplUtil; |
| import com.intellij.psi.impl.source.tree.*; |
| import com.intellij.psi.tree.ChildRoleBase; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import com.intellij.util.CharTable; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author max |
| */ |
| public class TypeParameterListElement extends CompositeElement { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.TypeParameterListElement"); |
| private static final TokenSet TYPE_PARAMETER_SET = TokenSet.create(JavaElementType.TYPE_PARAMETER); |
| |
| public TypeParameterListElement() { |
| super(JavaElementType.TYPE_PARAMETER_LIST); |
| } |
| |
| @Override |
| public int getChildRole(final ASTNode child) { |
| LOG.assertTrue(child.getTreeParent() == this); |
| final IElementType elType = child.getElementType(); |
| if (elType == JavaElementType.TYPE_PARAMETER) { |
| return ChildRole.TYPE_PARAMETER_IN_LIST; |
| } |
| else if (elType == JavaTokenType.COMMA) { |
| return ChildRole.COMMA; |
| } |
| else if (elType == JavaTokenType.LT) { |
| return ChildRole.LT_IN_TYPE_LIST; |
| } |
| else if (elType == JavaTokenType.GT) { |
| return ChildRole.GT_IN_TYPE_LIST; |
| } |
| else { |
| return ChildRoleBase.NONE; |
| } |
| } |
| |
| @Override |
| public TreeElement addInternal(final TreeElement first, final ASTNode last, ASTNode anchor, Boolean before) { |
| TreeElement lt = (TreeElement)findChildByRole(ChildRole.LT_IN_TYPE_LIST); |
| final CharTable treeCharTab = SharedImplUtil.findCharTableByTree(this); |
| if (lt == null) { |
| lt = Factory.createSingleLeafElement(JavaTokenType.LT, "<", 0, 1, treeCharTab, getManager()); |
| super.addInternal(lt, lt, getFirstChildNode(), Boolean.TRUE); |
| } |
| |
| TreeElement gt = (TreeElement)findChildByRole(ChildRole.GT_IN_TYPE_LIST); |
| if (gt == null) { |
| gt = Factory.createSingleLeafElement(JavaTokenType.GT, ">", 0, 1, treeCharTab, getManager()); |
| super.addInternal(gt, gt, getLastChildNode(), Boolean.FALSE); |
| } |
| |
| if (anchor == null) { |
| if (before == null || before.booleanValue()){ |
| anchor = gt; |
| before = Boolean.TRUE; |
| } |
| else{ |
| anchor = lt; |
| before = Boolean.FALSE; |
| } |
| } |
| |
| TreeElement firstAdded = super.addInternal(first, last, anchor, before); |
| if (first == last && first.getElementType() == JavaElementType.TYPE_PARAMETER) { |
| JavaSourceUtil.addSeparatingComma(this, first, TYPE_PARAMETER_SET); |
| } |
| return firstAdded; |
| } |
| |
| @Override |
| public void deleteChildInternal(@NotNull final ASTNode child) { |
| if (child.getElementType() == JavaElementType.TYPE_PARAMETER){ |
| JavaSourceUtil.deleteSeparatingComma(this, child); |
| } |
| |
| super.deleteChildInternal(child); |
| |
| if (child.getElementType() == JavaElementType.TYPE_PARAMETER) { |
| final ASTNode lt = findChildByRole(ChildRole.LT_IN_TYPE_LIST); |
| final ASTNode next = PsiImplUtil.skipWhitespaceAndComments(lt.getTreeNext()); |
| if (next != null && next.getElementType() == JavaTokenType.GT) { |
| deleteChildInternal(lt); |
| deleteChildInternal(next); |
| } |
| } |
| } |
| } |