/*
* Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.doclets.internal.toolkit.util;
import com.sun.javadoc.*;
import com.sun.tools.doclets.internal.toolkit.taglets.*;
import java.util.*;
/**
* Search for the requested documentation. Inherit documentation if necessary.
*
* @author Jamie Ho
* @since 1.5
*/
public class DocFinder {
/**
* The class that encapsulates the input.
*/
public static class Input {
/**
* The method to search documentation from.
*/
public MethodDoc method = null;
/**
* The taglet to search for documentation on behalf of. Null if we want
* to search for overall documentation.
*/
public InheritableTaglet taglet = null;
/**
* The id of the tag to retrieve documentation for.
*/
public String tagId = null;
/**
* The tag to retrieve documentation for. This is only used for the
* inheritDoc tag.
*/
public Tag tag = null;
/**
* True if we only want to search for the first sentence.
*/
public boolean isFirstSentence = false;
/**
* True if we are looking for documentation to replace the inheritDocTag.
*/
public boolean isInheritDocTag = false;
/**
* Used to distinguish between type variable param tags and regular
* param tags.
*/
public boolean isTypeVariableParamTag = false;
public Input() {}
public Input(MethodDoc method, InheritableTaglet taglet, Tag tag,
boolean isFirstSentence, boolean isInheritDocTag) {
this.method = method;
this.taglet = taglet;
this.tag = tag;
this.isFirstSentence = isFirstSentence;
this.isInheritDocTag = isInheritDocTag;
}
public Input(MethodDoc method, InheritableTaglet taglet, String tagId) {
this.method = method;
this.taglet = taglet;
this.tagId = tagId;
}
public Input(MethodDoc method, InheritableTaglet taglet, String tagId,
boolean isTypeVariableParamTag) {
this.method = method;
this.taglet = taglet;
this.tagId = tagId;
this.isTypeVariableParamTag = isTypeVariableParamTag;
}
public Input(MethodDoc method, InheritableTaglet taglet) {
this.method = method;
this.taglet = taglet;
}
public Input(MethodDoc method) {
this.method = method;
}
public Input(MethodDoc method, boolean isFirstSentence) {
this.method = method;
this.isFirstSentence = isFirstSentence;
}
public Input copy() {
Input clone = new Input();
clone.method = this.method;
clone.taglet = this.taglet;
clone.tagId = this.tagId;
clone.tag = this.tag;
clone.isFirstSentence = this.isFirstSentence;
clone.isInheritDocTag = this.isInheritDocTag;
clone.isTypeVariableParamTag = this.isTypeVariableParamTag;
return clone;
}
}
/**
* The class that encapsulates the output.
*/
public static class Output {
/**
* The tag that holds the documentation. Null if documentation
* is not held by a tag.
*/
public Tag holderTag;
/**
* The Doc object that holds the documentation.
*/
public Doc holder;
/**
* The inherited documentation.
*/
public Tag[] inlineTags = new Tag[] {};
/**
* False if documentation could not be inherited.
*/
public boolean isValidInheritDocTag = true;
/**
* When automatically inheriting throws tags, you sometime must inherit
* more than one tag. For example if the method declares that it throws
* IOException and the overidden method has throws tags for IOException and
* ZipException, both tags would be inherited because ZipException is a
* subclass of IOException. This subclass of DocFinder.Output allows
* multiple tag inheritence.
*/
public List tagList = new ArrayList();
}
/**
* Search for the requested comments in the given method. If it does not
* have comments, return documentation from the overriden method if possible.
* If the overriden method does not exist or does not have documentation to
* inherit, search for documentation to inherit from implemented methods.
*
* @param input the input object used to perform the search.
*
* @return an Output object representing the documentation that was found.
*/
public static Output search(Input input) {
Output output = new Output();
if (input.isInheritDocTag) {
//Do nothing because "method" does not have any documentation.
//All it has it {@inheritDoc}.
} else if (input.taglet == null) {
//We want overall documentation.
output.inlineTags = input.isFirstSentence ?
input.method.firstSentenceTags() :
input.method.inlineTags();
output.holder = input.method;
} else {
input.taglet.inherit(input, output);
}
if (output.inlineTags != null && output.inlineTags.length > 0) {
return output;
}
output.isValidInheritDocTag = false;
Input inheritedSearchInput = input.copy();
inheritedSearchInput.isInheritDocTag = false;
if (input.method.overriddenMethod() != null) {
inheritedSearchInput.method = input.method.overriddenMethod();
output = search(inheritedSearchInput);
output.isValidInheritDocTag = true;
if (output != null && output.inlineTags.length > 0) {
return output;
}
}
//NOTE: When we fix the bug where ClassDoc.interfaceTypes() does
// not pass all implemented interfaces, we will use the
// appropriate method here.
MethodDoc[] implementedMethods =
(new ImplementedMethods(input.method, null)).build(false);
for (int i = 0; i < implementedMethods.length; i++) {
inheritedSearchInput.method = implementedMethods[i];
output = search(inheritedSearchInput);
output.isValidInheritDocTag = true;
if (output != null && output.inlineTags.length > 0) {
return output;
}
}
return output;
}
}