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/*
* 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.*;
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 dsl
*/
public class PsiReferenceParameterListImpl extends CompositePsiElement implements PsiReferenceParameterList {
private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiReferenceParameterListImpl");
private static final TokenSet TYPE_SET = TokenSet.create(JavaElementType.TYPE);
public PsiReferenceParameterListImpl() {
super(JavaElementType.REFERENCE_PARAMETER_LIST);
}
@Override
@NotNull
public PsiTypeElement[] getTypeParameterElements() {
return getChildrenAsPsiElements(JavaElementType.TYPE, PsiTypeElement.ARRAY_FACTORY);
}
@Override
@NotNull
public PsiType[] getTypeArguments() {
return PsiImplUtil.typesByReferenceParameterList(this);
}
@Override
public int getChildRole(ASTNode child) {
IElementType i = child.getElementType();
if (i == JavaElementType.TYPE) {
return ChildRole.TYPE_IN_REFERENCE_PARAMETER_LIST;
}
else if (i == JavaTokenType.COMMA) {
return ChildRole.COMMA;
}
else if (i == JavaTokenType.LT) {
return ChildRole.LT_IN_TYPE_LIST;
}
else if (i == JavaTokenType.GT) {
return ChildRole.GT_IN_TYPE_LIST;
}
else {
return ChildRoleBase.NONE;
}
}
@Override
public ASTNode findChildByRole(int role){
LOG.assertTrue(ChildRole.isUnique(role));
switch(role){
default:
return null;
case ChildRole.LT_IN_TYPE_LIST:
if (getFirstChildNode() != null && getFirstChildNode().getElementType() == JavaTokenType.LT){
return getFirstChildNode();
}
else{
return null;
}
case ChildRole.GT_IN_TYPE_LIST:
if (getLastChildNode() != null && getLastChildNode().getElementType() == JavaTokenType.GT){
return getLastChildNode();
}
else{
return null;
}
}
}
@Override
public TreeElement addInternal(TreeElement first, ASTNode last, ASTNode anchor, Boolean before){
if (first == last && first.getElementType() == JavaElementType.TYPE){
if (getLastChildNode() != null && getLastChildNode().getElementType() == TokenType.ERROR_ELEMENT){
super.deleteChildInternal(getLastChildNode());
}
}
final CharTable treeCharTab = SharedImplUtil.findCharTableByTree(this);
if (getFirstChildNode()== null || getFirstChildNode().getElementType() != JavaTokenType.LT){
TreeElement lt = Factory.createSingleLeafElement(JavaTokenType.LT, "<", 0, 1, treeCharTab, getManager());
super.addInternal(lt, lt, getFirstChildNode(), Boolean.TRUE);
}
if (getLastChildNode() == null || getLastChildNode().getElementType() != JavaTokenType.GT){
TreeElement 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 = findChildByRole(ChildRole.GT_IN_TYPE_LIST);
before = Boolean.TRUE;
}
else{
anchor = findChildByRole(ChildRole.LT_IN_TYPE_LIST);
before = Boolean.FALSE;
}
}
final TreeElement firstAdded = super.addInternal(first, last, anchor, before);
if (first == last && first.getElementType() == JavaElementType.TYPE) {
JavaSourceUtil.addSeparatingComma(this, first, TYPE_SET);
}
return firstAdded;
}
@Override
public void deleteChildInternal(@NotNull ASTNode child) {
if (child.getElementType() == JavaElementType.TYPE) {
JavaSourceUtil.deleteSeparatingComma(this, child);
}
super.deleteChildInternal(child);
if (getTypeParameterElements().length == 0){
ASTNode lt = findChildByRole(ChildRole.LT_IN_TYPE_LIST);
if (lt != null){
deleteChildInternal(lt);
}
ASTNode gt = findChildByRole(ChildRole.GT_IN_TYPE_LIST);
if (gt != null){
deleteChildInternal(gt);
}
}
}
@Override
public void accept(@NotNull PsiElementVisitor visitor) {
if (visitor instanceof JavaElementVisitor) {
((JavaElementVisitor)visitor).visitReferenceParameterList(this);
}
else {
visitor.visitElement(this);
}
}
@Override
public String toString() {
return "PsiReferenceParameterList";
}
}
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