Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2003, 2013, 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

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 package com.sun.tools.doclets.internal.toolkit.builders;

 import java.io.*;

 import java.util.*;

 import com.sun.javadoc.*;

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

 import com.sun.tools.doclets.internal.toolkit.util.*;

 /**

  * Builds the Constants Summary Page.

  *

  *  <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

  * @author Bhavesh Patel (Modified)

  * @since 1.5

  */

 public class ConstantsSummaryBuilder extends AbstractBuilder {

     /**

      * The root element of the constant summary XML is {@value}.

      */

     public static final String ROOT = "ConstantSummary";

     /**

      * The maximum number of package directories shown in the constant

      * value index.

      */

     public static final int MAX_CONSTANT_VALUE_INDEX_LENGTH = 2;

     /**

      * The writer used to write the results.

      */

     protected final ConstantsSummaryWriter writer;

     /**

      * The set of ClassDocs that have constant fields.

      */

     protected final Set<ClassDoc> classDocsWithConstFields;

     /**

      * The set of printed package headers.

      */

     protected Set<String> printedPackageHeaders;

     /**

      * The current package being documented.

      */

     private PackageDoc currentPackage;

     /**

      * The current class being documented.

      */

     private ClassDoc currentClass;

     /**

      * The content tree for the constant summary documentation.

      */

     private Content contentTree;

     /**

      * Construct a new ConstantsSummaryBuilder.

      *

      * @param context       the build context.

      * @param writer        the writer for the summary.

      */

     private ConstantsSummaryBuilder(Context context,

             ConstantsSummaryWriter writer) {

         super(context);

         this.writer = writer;

         this.classDocsWithConstFields = new HashSet<ClassDoc>();

     }

     /**

      * Construct a ConstantsSummaryBuilder.

      *

      * @param context       the build context.

      * @param writer        the writer for the summary.

      */

     public static ConstantsSummaryBuilder getInstance(Context context,

             ConstantsSummaryWriter writer) {

         return new ConstantsSummaryBuilder(context, writer);

     }

     /**

      * {@inheritDoc}

      */

     public void build() throws IOException {

         if (writer == null) {

             //Doclet does not support this output.

             return;

         }

         build(layoutParser.parseXML(ROOT), contentTree);

     }

     /**

      * {@inheritDoc}

      */

     public String getName() {

         return ROOT;

     }

     /**

      * Build the constant summary.

      *

      * @param node the XML element that specifies which components to document

      * @param contentTree the content tree to which the documentation will be added

      */

     public void buildConstantSummary(XMLNode node, Content contentTree) throws Exception {

         contentTree = writer.getHeader();

         buildChildren(node, contentTree);

         writer.addFooter(contentTree);

         writer.printDocument(contentTree);

         writer.close();

     }

     /**

      * Build the list of packages.

      *

      * @param node the XML element that specifies which components to document

      * @param contentTree the content tree to which the content list will be added

      */

     public void buildContents(XMLNode node, Content contentTree) {

         Content contentListTree = writer.getContentsHeader();

         PackageDoc[] packages = configuration.packages;

         printedPackageHeaders = new HashSet<String>();

         for (int i = 0; i < packages.length; i++) {

             if (hasConstantField(packages[i]) && ! hasPrintedPackageIndex(packages[i].name())) {

                 writer.addLinkToPackageContent(packages[i],

                     parsePackageName(packages[i].name()),

                     printedPackageHeaders, contentListTree);

             }

         }

         contentTree.addContent(writer.getContentsList(contentListTree));

     }

     /**

      * Build the summary for each documented package.

      *

      * @param node the XML element that specifies which components to document

      * @param contentTree the tree to which the summaries will be added

      */

     public void buildConstantSummaries(XMLNode node, Content contentTree) {

         PackageDoc[] packages = configuration.packages;

         printedPackageHeaders = new HashSet<String>();

         Content summariesTree = writer.getConstantSummaries();

         for (int i = 0; i < packages.length; i++) {

             if (hasConstantField(packages[i])) {

                 currentPackage = packages[i];

                 //Build the documentation for the current package.

                 buildChildren(node, summariesTree);

             }

         }

         contentTree.addContent(summariesTree);

     }

     /**

      * Build the header for the given package.

      *

      * @param node the XML element that specifies which components to document

      * @param summariesTree the tree to which the package header will be added

      */

     public void buildPackageHeader(XMLNode node, Content summariesTree) {

         String parsedPackageName = parsePackageName(currentPackage.name());

         if (! printedPackageHeaders.contains(parsedPackageName)) {

             writer.addPackageName(currentPackage,

                 parsePackageName(currentPackage.name()), summariesTree);

             printedPackageHeaders.add(parsedPackageName);

         }

     }

     /**

      * Build the summary for the current class.

      *

      * @param node the XML element that specifies which components to document

      * @param summariesTree the tree to which the class constant summary will be added

      */

     public void buildClassConstantSummary(XMLNode node, Content summariesTree) {

         ClassDoc[] classes = currentPackage.name().length() > 0 ?

             currentPackage.allClasses() :

             configuration.classDocCatalog.allClasses(

                 DocletConstants.DEFAULT_PACKAGE_NAME);

         Arrays.sort(classes);

         Content classConstantTree = writer.getClassConstantHeader();

         for (int i = 0; i < classes.length; i++) {

             if (! classDocsWithConstFields.contains(classes[i]) ||

                 ! classes[i].isIncluded()) {

                 continue;

             }

             currentClass = classes[i];

             //Build the documentation for the current class.

             buildChildren(node, classConstantTree);

         }

         summariesTree.addContent(classConstantTree);

     }

     /**

      * Build the summary of constant members in the class.

      *

      * @param node the XML element that specifies which components to document

      * @param classConstantTree the tree to which the constant members table

      *                          will be added

      */

     public void buildConstantMembers(XMLNode node, Content classConstantTree) {

         new ConstantFieldBuilder(currentClass).buildMembersSummary(node, classConstantTree);

     }

     /**

      * Return true if the given package has constant fields to document.

      *

      * @param pkg   the package being checked.

      * @return true if the given package has constant fields to document.

      */

     private boolean hasConstantField(PackageDoc pkg) {

         ClassDoc[] classes;

         if (pkg.name().length() > 0) {

             classes = pkg.allClasses();

         } else {

             classes = configuration.classDocCatalog.allClasses(

                 DocletConstants.DEFAULT_PACKAGE_NAME);

         }

         boolean found = false;

         for (int j = 0; j < classes.length; j++){

             if (classes[j].isIncluded() && hasConstantField(classes[j])) {

                 found = true;

             }

         }

         return found;

     }

     /**

      * Return true if the given class has constant fields to document.

      *

      * @param classDoc the class being checked.

      * @return true if the given package has constant fields to document.

      */

     private boolean hasConstantField (ClassDoc classDoc) {

         VisibleMemberMap visibleMemberMapFields = new VisibleMemberMap(classDoc,

             VisibleMemberMap.FIELDS, configuration);

         List<?> fields = visibleMemberMapFields.getLeafClassMembers(configuration);

         for (Iterator<?> iter = fields.iterator(); iter.hasNext(); ) {

             FieldDoc field = (FieldDoc) iter.next();

             if (field.constantValueExpression() != null) {

                 classDocsWithConstFields.add(classDoc);

                 return true;

             }

         }

         return false;

     }

     /**

      * Return true if the given package name has been printed.  Also

      * return true if the root of this package has been printed.

      *

      * @param pkgname the name of the package to check.

      */

     private boolean hasPrintedPackageIndex(String pkgname) {

         String[] list = printedPackageHeaders.toArray(new String[] {});

         for (int i = 0; i < list.length; i++) {

             if (pkgname.startsWith(list[i])) {

                 return true;

             }

         }

         return false;

     }

     /**

      * Print the table of constants.

      *

      * @author Jamie Ho

      * @since 1.4

      */

     private class ConstantFieldBuilder {

         /**

          * The map used to get the visible variables.

          */

         protected VisibleMemberMap visibleMemberMapFields = null;

         /**

          * The map used to get the visible variables.

          */

         protected VisibleMemberMap visibleMemberMapEnumConst = null;

         /**

          * The classdoc that we are examining constants for.

          */

         protected ClassDoc classdoc;

         /**

          * Construct a ConstantFieldSubWriter.

          * @param classdoc the classdoc that we are examining constants for.

          */

         public ConstantFieldBuilder(ClassDoc classdoc) {

             this.classdoc = classdoc;

             visibleMemberMapFields = new VisibleMemberMap(classdoc,

                 VisibleMemberMap.FIELDS, configuration);

             visibleMemberMapEnumConst = new VisibleMemberMap(classdoc,

                 VisibleMemberMap.ENUM_CONSTANTS, configuration);

         }

         /**

          * Builds the table of constants for a given class.

          *

          * @param node the XML element that specifies which components to document

          * @param classConstantTree the tree to which the class constants table

          *                          will be added

          */

         protected void buildMembersSummary(XMLNode node, Content classConstantTree) {

             List<FieldDoc> members = new ArrayList<FieldDoc>(members());

             if (members.size() > 0) {

                 Collections.sort(members);

                 writer.addConstantMembers(classdoc, members, classConstantTree);

             }

         }

         /**

          * Return the list of visible constant fields for the given classdoc.

          * @return the list of visible constant fields for the given classdoc.

          */

         protected List<FieldDoc> members() {

             List<ProgramElementDoc> l = visibleMemberMapFields.getLeafClassMembers(configuration);

             l.addAll(visibleMemberMapEnumConst.getLeafClassMembers(configuration));

             Iterator<ProgramElementDoc> iter;

             if(l != null){

                 iter = l.iterator();

             } else {

                 return null;

             }

             List<FieldDoc> inclList = new LinkedList<FieldDoc>();

             FieldDoc member;

             while(iter.hasNext()){

                 member = (FieldDoc)iter.next();

                 if(member.constantValue() != null){

                     inclList.add(member);

                 }

             }

             return inclList;

         }

     }

     /**

      * Parse the package name.  We only want to display package name up to

      * 2 levels.

      */

     private String parsePackageName(String pkgname) {

         int index = -1;

         for (int j = 0; j < MAX_CONSTANT_VALUE_INDEX_LENGTH; j++) {

             index = pkgname.indexOf(".", index + 1);

         }

         if (index != -1) {

             pkgname = pkgname.substring(0, index);

         }

         return pkgname;

     }

 }