/*
* 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.
*/
package com.sylvanaar.idea.Lua.lang.luadoc.psi.impl;
import com.intellij.lang.ASTNode;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.psi.PsiElement;
import com.sylvanaar.idea.Lua.lang.luadoc.psi.api.LuaDocComment;
import com.sylvanaar.idea.Lua.lang.luadoc.psi.api.LuaDocCommentOwner;
import com.sylvanaar.idea.Lua.lang.luadoc.psi.api.LuaDocPsiElement;
import com.sylvanaar.idea.Lua.lang.parser.LuaElementTypes;
import com.sylvanaar.idea.Lua.lang.psi.expressions.LuaExpression;
import com.sylvanaar.idea.Lua.lang.psi.expressions.LuaTableConstructor;
import com.sylvanaar.idea.Lua.lang.psi.statements.LuaBlock;
import com.sylvanaar.idea.Lua.lang.psi.statements.LuaMaybeDeclarationAssignmentStatement;
import org.jetbrains.annotations.Nullable;
public abstract class LuaDocCommentUtil {
private static final Logger log = Logger.getInstance("Lua.LuaDocCommentUtil");
@Nullable
public static LuaDocCommentOwner findDocOwner(LuaDocPsiElement docElement) {
PsiElement element = docElement;
while (element != null && element.getParent() instanceof LuaDocPsiElement) element = element.getParent();
if (element == null) return null;
while (true) {
element = element.getNextSibling();
if (element instanceof LuaBlock)
element = element.getFirstChild();
if (element == null) return null;
final ASTNode node = element.getNode();
if (node == null) return null;
if (LuaElementTypes.LUADOC_COMMENT.equals(node.getElementType()) ||
!LuaElementTypes.WHITE_SPACES_OR_COMMENTS.contains(node.getElementType())) {
break;
}
}
if (element instanceof LuaDocCommentOwner) return (LuaDocCommentOwner) element;
if (element instanceof LuaMaybeDeclarationAssignmentStatement) {
LuaExpression[] expressions = ((LuaMaybeDeclarationAssignmentStatement) element).getDefinedSymbolValues();
for (LuaExpression e : expressions)
if (e instanceof LuaDocCommentOwner) return (LuaDocCommentOwner) e;
}
return null;
}
@Nullable
public static LuaDocComment findDocComment(LuaDocCommentOwner owner) {
PsiElement element;
if (owner instanceof LuaTableConstructor) element = owner.getParent().getParent().getPrevSibling();
else element = owner.getPrevSibling();
while (true) {
if (element == null) return null;
final ASTNode node = element.getNode();
if (node == null) return null;
if (LuaElementTypes.LUADOC_COMMENT.equals(node.getElementType()) ||
!LuaElementTypes.WHITE_SPACES_OR_COMMENTS.contains(node.getElementType())) {
break;
}
element = element.getPrevSibling();
}
if (element instanceof LuaDocComment) return (LuaDocComment) element;
return null;
}
}