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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.PsiClass;
import com.intellij.psi.PsiMethod;
import com.intellij.psi.TokenType;
import com.intellij.psi.impl.PsiImplUtil;
import com.intellij.psi.impl.source.Constants;
import com.intellij.psi.impl.source.tree.*;
import com.intellij.psi.tree.ChildRoleBase;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.CharTable;
import org.jetbrains.annotations.NotNull;
public class MethodElement extends CompositeElement implements Constants {
private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.MethodElement");
public MethodElement() {
super(METHOD);
}
protected MethodElement(IElementType type) {
super(type);
}
@Override
public int getTextOffset() {
ASTNode name = findChildByType(IDENTIFIER);
return name != null ? name.getStartOffset() : this.getStartOffset();
}
@Override
public TreeElement addInternal(TreeElement first, ASTNode last, ASTNode anchor, Boolean before) {
if (first == last && first.getElementType() == JavaElementType.CODE_BLOCK) {
ASTNode semicolon = TreeUtil.findChildBackward(this, SEMICOLON);
if (semicolon != null) {
deleteChildInternal(semicolon);
}
}
return super.addInternal(first, last, anchor, before);
}
@Override
public ASTNode copyElement() {
CharTable table = SharedImplUtil.findCharTableByTree(this);
final PsiClass psiClass = ((PsiMethod)getPsi()).getContainingClass();
return psiClass != null ? ChangeUtil.copyElement(this, psiClass.getTypeParameterList(), table) : super.copyElement();
}
@Override
public void deleteChildInternal(@NotNull ASTNode child) {
if (child.getElementType() == CODE_BLOCK) {
final ASTNode prevWS = TreeUtil.prevLeaf(child);
if (prevWS != null && prevWS.getElementType() == TokenType.WHITE_SPACE) {
removeChild(prevWS);
}
super.deleteChildInternal(child);
final CharTable treeCharTab = SharedImplUtil.findCharTableByTree(this);
LeafElement semicolon = Factory.createSingleLeafElement(SEMICOLON, ";", 0, 1, treeCharTab, getManager());
addInternal(semicolon, semicolon, null, Boolean.TRUE);
}
else {
super.deleteChildInternal(child);
}
}
@Override
public ASTNode findChildByRole(int role) {
LOG.assertTrue(ChildRole.isUnique(role));
switch (role) {
default:
return null;
case ChildRole.DOC_COMMENT:
return PsiImplUtil.findDocComment(this);
case ChildRole.MODIFIER_LIST:
return findChildByType(MODIFIER_LIST);
case ChildRole.TYPE_PARAMETER_LIST:
return findChildByType(TYPE_PARAMETER_LIST);
case ChildRole.NAME:
return findChildByType(IDENTIFIER);
case ChildRole.TYPE:
return findChildByType(TYPE);
case ChildRole.METHOD_BODY:
return findChildByType(CODE_BLOCK);
case ChildRole.PARAMETER_LIST:
return findChildByType(PARAMETER_LIST);
case ChildRole.THROWS_LIST:
return findChildByType(THROWS_LIST);
case ChildRole.CLOSING_SEMICOLON:
return TreeUtil.findChildBackward(this, SEMICOLON);
case ChildRole.DEFAULT_KEYWORD:
return findChildByType(DEFAULT_KEYWORD);
}
}
@Override
public int getChildRole(ASTNode child) {
LOG.assertTrue(child.getTreeParent() == this);
IElementType i = child.getElementType();
if (i == JavaDocElementType.DOC_COMMENT) {
return getChildRole(child, ChildRole.DOC_COMMENT);
}
else if (i == MODIFIER_LIST) {
return ChildRole.MODIFIER_LIST;
}
else if (i == TYPE_PARAMETER_LIST) {
return ChildRole.TYPE_PARAMETER_LIST;
}
else if (i == CODE_BLOCK) {
return ChildRole.METHOD_BODY;
}
else if (i == PARAMETER_LIST) {
return ChildRole.PARAMETER_LIST;
}
else if (i == THROWS_LIST) {
return ChildRole.THROWS_LIST;
}
else if (i == TYPE) {
return getChildRole(child, ChildRole.TYPE);
}
else if (i == IDENTIFIER) {
return getChildRole(child, ChildRole.NAME);
}
else if (i == SEMICOLON) {
return getChildRole(child, ChildRole.CLOSING_SEMICOLON);
}
else if (i == DEFAULT_KEYWORD) {
return ChildRole.DEFAULT_KEYWORD;
}
else {
return ChildRoleBase.NONE;
}
}
@Override
protected boolean isVisibilitySupported() {
return true;
}
}
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