https://openjdk.java.net/ 
/*
 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. 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.  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).
 *
 * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package jdk.javadoc.internal.doclets.toolkit.builders;

import java.lang.reflect.*;
import java.util.*;

import javax.lang.model.element.PackageElement;

import jdk.javadoc.internal.doclets.toolkit.Configuration;
import jdk.javadoc.internal.doclets.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.DocletException;
import jdk.javadoc.internal.doclets.toolkit.Messages;
import jdk.javadoc.internal.doclets.toolkit.Resources;
import jdk.javadoc.internal.doclets.toolkit.util.UncheckedDocletException;
import jdk.javadoc.internal.doclets.toolkit.util.InternalException;
import jdk.javadoc.internal.doclets.toolkit.util.SimpleDocletException;
import jdk.javadoc.internal.doclets.toolkit.util.Utils;

import static javax.tools.Diagnostic.Kind.*;


The superclass for all builders. A builder is a class that provides the structure and content of API documentation. A builder is completely doclet independent which means that any doclet can use builders to construct documentation, as long as it impelements the appropriate writer interfaces. For example, if a doclet wanted to use ConstantsSummaryBuilder to build a constant summary, all it has to do is implement the ConstantsSummaryWriter interface and pass it to the builder using a WriterFactory. 
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
/**
 * The superclass for all builders.  A builder is a class that provides
 * the structure and content of API documentation.  A builder is completely
 * doclet independent which means that any doclet can use builders to
 * construct documentation, as long as it impelements the appropriate
 * writer interfaces.  For example, if a doclet wanted to use
 * {@link ConstantsSummaryBuilder} to build a constant summary, all it has to
 * do is implement the ConstantsSummaryWriter interface and pass it to the
 * builder using a WriterFactory.
 *
 *  <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
 */

public abstract class AbstractBuilder {
    public static class Context {
        
The configuration used in this run of the doclet.

/**
         * The configuration used in this run of the doclet.
         */
        final Configuration configuration;

        
Keep track of which packages we have seen for
efficiency purposes.  We don't want to copy the
doc files multiple times for a single package.

/**
         * Keep track of which packages we have seen for
         * efficiency purposes.  We don't want to copy the
         * doc files multiple times for a single package.
         */
        final Set<PackageElement> containingPackagesSeen;

        
Shared parser for the builder XML file

/**
         * Shared parser for the builder XML file
         */
        final LayoutParser layoutParser;

        Context(Configuration configuration,
                Set<PackageElement> containingPackagesSeen,
                LayoutParser layoutParser) {
            this.configuration = configuration;
            this.containingPackagesSeen = containingPackagesSeen;
            this.layoutParser = layoutParser;
        }
    }

    
The configuration used in this run of the doclet.

/**
     * The configuration used in this run of the doclet.
     */
    protected final Configuration configuration;

    protected final Messages messages;
    protected final Resources resources;
    protected final Utils utils;

    
Keep track of which packages we have seen for
efficiency purposes.  We don't want to copy the
doc files multiple times for a single package.

/**
     * Keep track of which packages we have seen for
     * efficiency purposes.  We don't want to copy the
     * doc files multiple times for a single package.
     */
    protected final Set<PackageElement> containingPackagesSeen;

    protected final LayoutParser layoutParser;

    
True if we want to print debug output.

/**
     * True if we want to print debug output.
     */
    protected static final boolean DEBUG = false;

    
Construct a Builder.

Params:
  • c – a context providing information used in this run of the doclet
/**
     * Construct a Builder.
     * @param c a context providing information used in this run of the doclet
     */
    public AbstractBuilder(Context c) {
        this.configuration = c.configuration;
        this.messages = configuration.getMessages();
        this.resources = configuration.getResources();
        this.utils = configuration.utils;
        this.containingPackagesSeen = c.containingPackagesSeen;
        this.layoutParser = c.layoutParser;
    }

    
Return the name of this builder.

Returns:the name of the builder.
/**
     * Return the name of this builder.
     *
     * @return the name of the builder.
     */
    public abstract String getName();

    
Build the documentation.

Throws:
  • DocletException – if there is a problem building the documentation
/**
     * Build the documentation.
     *
     * @throws DocletException if there is a problem building the documentation
     */
    public abstract void build() throws DocletException;

    
Build the documentation, as specified by the given XML element.

Params:
  • node – the XML element that specifies which component to document.
  • contentTree – content tree to which the documentation will be added
Throws:
/**
     * Build the documentation, as specified by the given XML element.
     *
     * @param node the XML element that specifies which component to document.
     * @param contentTree content tree to which the documentation will be added
     * @throws DocletException if there is a problem building the documentation
     */
    protected void build(XMLNode node, Content contentTree) throws DocletException {
        String component = node.name;
        try {
            String methodName = "build" + component;
            if (DEBUG) {
                configuration.reporter.print(ERROR,
                        "DEBUG: " + getClass().getName() + "." + methodName);
            }
            Method method = getClass().getMethod(methodName, XMLNode.class, Content.class);
            method.invoke(this, node, contentTree);

        } catch (NoSuchMethodException e) {
            // Use SimpleDocletException instead of InternalException because there is nothing
            // informative about about the place the exception occurred, here in this method.
            // The problem is either a misconfigured doclet.xml file or a missing method in the
            // user-supplied(?) doclet
            String message = resources.getText("doclet.builder.unknown.component", component);
            throw new SimpleDocletException(message, e);

        } catch (InvocationTargetException e) {
            Throwable cause = e.getCause();
            if (cause instanceof DocletException) {
                throw (DocletException) cause;
            } else if (cause instanceof UncheckedDocletException) {
                throw (DocletException) cause.getCause();
            } else {
                // use InternalException, so that a stacktrace showing the position of
                // the internal exception is generated
                String message = resources.getText("doclet.builder.exception.in.component", component,
                        e.getCause());
                throw new InternalException(message, e.getCause());
            }

        } catch (ReflectiveOperationException e) {
            // Use SimpleDocletException instead of InternalException because there is nothing
            // informative about about the place the exception occurred, here in this method.
            // The problem is specific to the method being invoked, such as illegal access
            // or illegal argument.
            String message = resources.getText("doclet.builder.exception.in.component", component, e);
            throw new SimpleDocletException(message, e.getCause());
        }
    }

    
Build the documentation, as specified by the children of the given XML element.

Params:
  • node – the XML element that specifies which components to document.
  • contentTree – content tree to which the documentation will be added
Throws:
/**
     * Build the documentation, as specified by the children of the given XML element.
     *
     * @param node the XML element that specifies which components to document.
     * @param contentTree content tree to which the documentation will be added
     * @throws DocletException if there is a problem while building the children
     */
    protected void buildChildren(XMLNode node, Content contentTree) throws DocletException {
        for (XMLNode child : node.children)
            build(child, contentTree);
    }
}