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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package com.sun.tools.doclets.internal.toolkit.util.links;

import com.sun.javadoc.*;
import com.sun.tools.doclets.internal.toolkit.Content;


A factory that constructs links from given link information.
 
This is NOT part of any supported API.
 If you write code that depends on this, you do so at your own risk.
 This code and its internal interfaces are subject to change or
 deletion without notice.

Author:Jamie Ho
Since:1.5
/**
 * A factory that constructs links from given link information.
 *
 *  <p><b>This is NOT part of any supported API.
 *  If you write code that depends on this, you do so at your own risk.
 *  This code and its internal interfaces are subject to change or
 *  deletion without notice.</b>
 *
 * @author Jamie Ho
 * @since 1.5
 */
@Deprecated
public abstract class LinkFactory {

    
Return an empty instance of a content object.

Returns:an empty instance of a content object.
/**
     * Return an empty instance of a content object.
     *
     * @return an empty instance of a content object.
     */
    protected abstract Content newContent();

    
Constructs a link from the given link information.

Params:
  • linkInfo – the information about the link.
Returns:the output of the link.
/**
     * Constructs a link from the given link information.
     *
     * @param linkInfo the information about the link.
     * @return the output of the link.
     */
    public Content getLink(LinkInfo linkInfo) {
        if (linkInfo.type != null) {
            Type type = linkInfo.type;
            Content link = newContent();
            if (type.isPrimitive()) {
                //Just a primitive.
                link.addContent(type.typeName());
            } else if (type.asAnnotatedType() != null && type.dimension().length() == 0) {
                link.addContent(getTypeAnnotationLinks(linkInfo));
                linkInfo.type = type.asAnnotatedType().underlyingType();
                link.addContent(getLink(linkInfo));
                return link;
            } else if (type.asWildcardType() != null) {
                //Wildcard type.
                linkInfo.isTypeBound = true;
                link.addContent("?");
                WildcardType wildcardType = type.asWildcardType();
                Type[] extendsBounds = wildcardType.extendsBounds();
                for (int i = 0; i < extendsBounds.length; i++) {
                    link.addContent(i > 0 ? ", " : " extends ");
                    setBoundsLinkInfo(linkInfo, extendsBounds[i]);
                    link.addContent(getLink(linkInfo));
                }
                Type[] superBounds = wildcardType.superBounds();
                for (int i = 0; i < superBounds.length; i++) {
                    link.addContent(i > 0 ? ", " : " super ");
                    setBoundsLinkInfo(linkInfo, superBounds[i]);
                    link.addContent(getLink(linkInfo));
                }
            } else if (type.asTypeVariable()!= null) {
                link.addContent(getTypeAnnotationLinks(linkInfo));
                linkInfo.isTypeBound = true;
                //A type variable.
                Doc owner = type.asTypeVariable().owner();
                if ((! linkInfo.excludeTypeParameterLinks) &&
                        owner instanceof ClassDoc) {
                    linkInfo.classDoc = (ClassDoc) owner;
                    Content label = newContent();
                    label.addContent(type.typeName());
                    linkInfo.label = label;
                    link.addContent(getClassLink(linkInfo));
                } else {
                    //No need to link method type parameters.
                    link.addContent(type.typeName());
                }

                Type[] bounds = type.asTypeVariable().bounds();
                if (! linkInfo.excludeTypeBounds) {
                    linkInfo.excludeTypeBounds = true;
                    for (int i = 0; i < bounds.length; i++) {
                        link.addContent(i > 0 ? " & " : " extends ");
                        setBoundsLinkInfo(linkInfo, bounds[i]);
                        link.addContent(getLink(linkInfo));
                    }
                }
            } else if (type.asClassDoc() != null) {
                //A class type.
                if (linkInfo.isTypeBound &&
                        linkInfo.excludeTypeBoundsLinks) {
                    //Since we are excluding type parameter links, we should not
                    //be linking to the type bound.
                    link.addContent(type.typeName());
                    link.addContent(getTypeParameterLinks(linkInfo));
                    return link;
                } else {
                    linkInfo.classDoc = type.asClassDoc();
                    link = newContent();
                    link.addContent(getClassLink(linkInfo));
                    if (linkInfo.includeTypeAsSepLink) {
                        link.addContent(getTypeParameterLinks(linkInfo, false));
                    }
                }
            }

            if (linkInfo.isVarArg) {
                if (type.dimension().length() > 2) {
                    //Javadoc returns var args as array.
                    //Strip out the first [] from the var arg.
                    link.addContent(type.dimension().substring(2));
                }
                link.addContent("...");
            } else {
                while (type != null && type.dimension().length() > 0) {
                    if (type.asAnnotatedType() != null) {
                        linkInfo.type = type;
                        link.addContent(" ");
                        link.addContent(getTypeAnnotationLinks(linkInfo));
                        link.addContent("[]");
                        type = type.asAnnotatedType().underlyingType().getElementType();
                    } else {
                        link.addContent("[]");
                        type = type.getElementType();
                    }
                }
                linkInfo.type = type;
                Content newLink = newContent();
                newLink.addContent(getTypeAnnotationLinks(linkInfo));
                newLink.addContent(link);
                link = newLink;
            }
            return link;
        } else if (linkInfo.classDoc != null) {
            //Just a class link
            Content link = newContent();
            link.addContent(getClassLink(linkInfo));
            if (linkInfo.includeTypeAsSepLink) {
                link.addContent(getTypeParameterLinks(linkInfo, false));
            }
            return link;
        } else {
            return null;
        }
    }

    private void setBoundsLinkInfo(LinkInfo linkInfo, Type bound) {
        linkInfo.classDoc = null;
        linkInfo.label = null;
        linkInfo.type = bound;
    }

    
Return the link to the given class.

Params:
  • linkInfo – the information about the link to construct.
Returns:the link for the given class.
/**
     * Return the link to the given class.
     *
     * @param linkInfo the information about the link to construct.
     *
     * @return the link for the given class.
     */
    protected abstract Content getClassLink(LinkInfo linkInfo);

    
Return the link to the given type parameter.

Params:
  • linkInfo –     the information about the link to construct.
  • typeParam – the type parameter to link to.
/**
     * Return the link to the given type parameter.
     *
     * @param linkInfo     the information about the link to construct.
     * @param typeParam the type parameter to link to.
     */
    protected abstract Content getTypeParameterLink(LinkInfo linkInfo,
        Type typeParam);

    protected abstract Content getTypeAnnotationLink(LinkInfo linkInfo,
            AnnotationDesc annotation);

    
Return the links to the type parameters.

Params:
  • linkInfo –     the information about the link to construct.
Returns:the links to the type parameters.
/**
     * Return the links to the type parameters.
     *
     * @param linkInfo     the information about the link to construct.
     * @return the links to the type parameters.
     */
    public Content getTypeParameterLinks(LinkInfo linkInfo) {
        return getTypeParameterLinks(linkInfo, true);
    }

    
Return the links to the type parameters.

Params:
  • linkInfo –     the information about the link to construct.
  • isClassLabel – true if this is a class label.  False if it is
                    the type parameters portion of the link.
Returns:the links to the type parameters.
/**
     * Return the links to the type parameters.
     *
     * @param linkInfo     the information about the link to construct.
     * @param isClassLabel true if this is a class label.  False if it is
     *                     the type parameters portion of the link.
     * @return the links to the type parameters.
     */
    public Content getTypeParameterLinks(LinkInfo linkInfo, boolean isClassLabel) {
        Content links = newContent();
        Type[] vars;
        if (linkInfo.executableMemberDoc != null) {
            vars = linkInfo.executableMemberDoc.typeParameters();
        } else if (linkInfo.type != null &&
                linkInfo.type.asParameterizedType() != null){
            vars =  linkInfo.type.asParameterizedType().typeArguments();
        } else if (linkInfo.classDoc != null){
            vars = linkInfo.classDoc.typeParameters();
        } else {
            //Nothing to document.
            return links;
        }
        if (((linkInfo.includeTypeInClassLinkLabel && isClassLabel) ||
             (linkInfo.includeTypeAsSepLink && ! isClassLabel)
              )
            && vars.length > 0) {
            links.addContent("<");
            for (int i = 0; i < vars.length; i++) {
                if (i > 0) {
                    links.addContent(",");
                }
                links.addContent(getTypeParameterLink(linkInfo, vars[i]));
            }
            links.addContent(">");
        }
        return links;
    }

    public Content getTypeAnnotationLinks(LinkInfo linkInfo) {
        Content links = newContent();
        if (linkInfo.type.asAnnotatedType() == null)
            return links;
        AnnotationDesc[] annotations = linkInfo.type.asAnnotatedType().annotations();
        for (int i = 0; i < annotations.length; i++) {
            if (i > 0) {
                links.addContent(" ");
            }
            links.addContent(getTypeAnnotationLink(linkInfo, annotations[i]));
        }

        links.addContent(" ");
        return links;
    }
}