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 * Copyright (c) 1997, 2020, 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
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package jdk.javadoc.internal.doclets.formats.html;

import java.util.SortedSet;
import java.util.TreeSet;

import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.TypeMirror;

import jdk.javadoc.internal.doclets.formats.html.markup.ContentBuilder;
import jdk.javadoc.internal.doclets.formats.html.markup.Entity;
import jdk.javadoc.internal.doclets.formats.html.markup.HtmlStyle;
import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTree;
import jdk.javadoc.internal.doclets.formats.html.markup.StringContent;
import jdk.javadoc.internal.doclets.formats.html.markup.Table;
import jdk.javadoc.internal.doclets.formats.html.markup.TableHeader;
import jdk.javadoc.internal.doclets.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.MemberSummaryWriter;
import jdk.javadoc.internal.doclets.toolkit.MethodWriter;
import jdk.javadoc.internal.doclets.toolkit.util.Utils;
import jdk.javadoc.internal.doclets.toolkit.util.VisibleMemberTable;

Writes method documentation in HTML format.
 
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.
/**
 * Writes method documentation in HTML format.
 *
 *  <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>
 */
public class MethodWriterImpl extends AbstractExecutableMemberWriter
        implements MethodWriter, MemberSummaryWriter {

    
Construct a new MethodWriterImpl.
Params:
writer – the writer for the class that the methods belong to.
typeElement – the class being documented./**
     * Construct a new MethodWriterImpl.
     *
     * @param writer the writer for the class that the methods belong to.
     * @param typeElement the class being documented.
     */
    public MethodWriterImpl(SubWriterHolderWriter writer, TypeElement typeElement) {
        super(writer, typeElement);
    }

    
Construct a new MethodWriterImpl.
Params:
writer – The writer for the class that the methods belong to./**
     * Construct a new MethodWriterImpl.
     *
     * @param writer The writer for the class that the methods belong to.
     */
    public MethodWriterImpl(SubWriterHolderWriter writer) {
        super(writer);
    }

    @Override
    public Content getMemberSummaryHeader(TypeElement typeElement, Content memberSummaryTree) {
        memberSummaryTree.add(MarkerComments.START_OF_METHOD_SUMMARY);
        Content memberTree = new ContentBuilder();
        writer.addSummaryHeader(this, memberTree);
        return memberTree;
    }

    @Override
    public void addSummary(Content summariesList, Content content) {
        writer.addSummary(HtmlStyle.methodSummary,
                SectionName.METHOD_SUMMARY, summariesList, content);
    }

    @Override
    public Content getMethodDetailsTreeHeader(Content memberDetailsTree) {
        memberDetailsTree.add(MarkerComments.START_OF_METHOD_DETAILS);
        Content methodDetailsTree = new ContentBuilder();
        Content heading = HtmlTree.HEADING(Headings.TypeDeclaration.DETAILS_HEADING,
                contents.methodDetailLabel);
        methodDetailsTree.add(heading);
        return methodDetailsTree;
    }

    @Override
    public Content getMethodDocTreeHeader(ExecutableElement method) {
        String erasureAnchor;
        Content methodDocTree = new ContentBuilder();
        HtmlTree heading = HtmlTree.HEADING(Headings.TypeDeclaration.MEMBER_HEADING,
                new StringContent(name(method)));
        if ((erasureAnchor = getErasureAnchor(method)) != null) {
            heading.setId(erasureAnchor);
        }
        methodDocTree.add(heading);
        return HtmlTree.SECTION(HtmlStyle.detail, methodDocTree)
                .setId(links.getName(writer.getAnchor(method)));
    }

    
Get the signature for the given method.
Params:
method – the method being documented.
Returns:
a content object for the signature/**
     * Get the signature for the given method.
     *
     * @param method the method being documented.
     * @return a content object for the signature
     */
    @Override
    public Content getSignature(ExecutableElement method) {
        return new MemberSignature(method)
                .addTypeParameters(getTypeParameters(method))
                .addReturnType(getReturnType(method))
                .addParameters(getParameters(method, true))
                .addExceptions(getExceptions(method))
                .toContent();
    }

    @Override
    public void addDeprecated(ExecutableElement method, Content methodDocTree) {
        addDeprecatedInfo(method, methodDocTree);
    }

    @Override
    public void addComments(TypeMirror holderType, ExecutableElement method, Content methodDocTree) {
        TypeElement holder = utils.asTypeElement(holderType);
        if (!utils.getFullBody(method).isEmpty()) {
            if (holder.equals(typeElement) ||
                    !(utils.isPublic(holder) ||
                    utils.isLinkable(holder))) {
                writer.addInlineComment(method, methodDocTree);
            } else {
                Content link =
                        writer.getDocLink(LinkInfoImpl.Kind.EXECUTABLE_ELEMENT_COPY,
                        holder, method,
                        utils.isIncluded(holder)
                                ? utils.getSimpleName(holder)
                                : utils.getFullyQualifiedName(holder),
                            false);
                Content codeLink = HtmlTree.CODE(link);
                Content descfrmLabel = HtmlTree.SPAN(HtmlStyle.descfrmTypeLabel,
                        utils.isClass(holder)
                                ? contents.descfrmClassLabel
                                : contents.descfrmInterfaceLabel);
                descfrmLabel.add(Entity.NO_BREAK_SPACE);
                descfrmLabel.add(codeLink);
                methodDocTree.add(HtmlTree.DIV(HtmlStyle.block, descfrmLabel));
                writer.addInlineComment(method, methodDocTree);
            }
        }
    }

    @Override
    public void addTags(ExecutableElement method, Content methodDocTree) {
        writer.addTagsInfo(method, methodDocTree);
    }

    @Override
    public Content getMethodDetails(Content methodDetailsTreeHeader, Content methodDetailsTree) {
        Content methodDetails = new ContentBuilder(methodDetailsTreeHeader, methodDetailsTree);
        return getMemberTree(HtmlTree.SECTION(HtmlStyle.methodDetails, methodDetails)
                .setId(SectionName.METHOD_DETAIL.getName()));
    }

    @Override
    public void addSummaryLabel(Content memberTree) {
        Content label = HtmlTree.HEADING(Headings.TypeDeclaration.SUMMARY_HEADING,
                contents.methodSummary);
        memberTree.add(label);
    }

    @Override
    public TableHeader getSummaryTableHeader(Element member) {
        return new TableHeader(contents.modifierAndTypeLabel, contents.methodLabel,
                contents.descriptionLabel);
    }

    @Override
    protected Table createSummaryTable() {
        return new Table(HtmlStyle.memberSummary, HtmlStyle.summaryTable)
                .setHeader(getSummaryTableHeader(typeElement))
                .setRowScopeColumn(1)
                .setColumnStyles(HtmlStyle.colFirst, HtmlStyle.colSecond, HtmlStyle.colLast)
                .setId("method-summary-table")
                .setDefaultTab(resources.getText("doclet.All_Methods"))
                .addTab(resources.getText("doclet.Static_Methods"), utils::isStatic)
                .addTab(resources.getText("doclet.Instance_Methods"), e -> !utils.isStatic(e))
                .addTab(resources.getText("doclet.Abstract_Methods"), utils::isAbstract)
                .addTab(resources.getText("doclet.Concrete_Methods"),
                        e -> !utils.isAbstract(e) && !utils.isInterface(e.getEnclosingElement()))
                .addTab(resources.getText("doclet.Default_Methods"), utils::isDefault)
                .addTab(resources.getText("doclet.Deprecated_Methods"),
                        e -> utils.isDeprecated(e) || utils.isDeprecated(typeElement))
                .setTabScript(i -> "show(" + i + ");");
    }

    @Override
    public void addInheritedSummaryLabel(TypeElement typeElement, Content inheritedTree) {
        Content classLink = writer.getPreQualifiedClassLink(
                LinkInfoImpl.Kind.MEMBER, typeElement, false);
        Content label;
        if (options.summarizeOverriddenMethods()) {
            label = new StringContent(utils.isClass(typeElement)
                    ? resources.getText("doclet.Methods_Declared_In_Class")
                    : resources.getText("doclet.Methods_Declared_In_Interface"));
        } else {
            label = new StringContent(utils.isClass(typeElement)
                    ? resources.getText("doclet.Methods_Inherited_From_Class")
                    : resources.getText("doclet.Methods_Inherited_From_Interface"));
        }
        HtmlTree labelHeading = HtmlTree.HEADING(Headings.TypeDeclaration.INHERITED_SUMMARY_HEADING,
                label);
        labelHeading.setId(SectionName.METHODS_INHERITANCE.getName()
                + links.getName(configuration.getClassName(typeElement)));
        labelHeading.add(Entity.NO_BREAK_SPACE);
        labelHeading.add(classLink);
        inheritedTree.add(labelHeading);
    }

    @Override
    protected void addSummaryType(Element member, Content tdSummaryType) {
        ExecutableElement meth = (ExecutableElement)member;
        addModifierAndType(meth, utils.getReturnType(typeElement, meth), tdSummaryType);
    }

    
Adds "overrides" or "specified by" information about a method (if appropriate)
into a definition list.
Params:
writer –         the writer for the element
overriddenType – the superclass
method –         the method
dl –             the list in which to add the information./**
     * Adds "overrides" or "specified by" information about a method (if appropriate)
     * into a definition list.
     *
     * @param writer         the writer for the element
     * @param overriddenType the superclass
     * @param method         the method
     * @param dl             the list in which to add the information.
     */
    protected static void addOverridden(HtmlDocletWriter writer,
                                        TypeMirror overriddenType,
                                        ExecutableElement method,
                                        Content dl) {
        if (writer.options.noComment()) {
            return;
        }
        Utils utils = writer.utils;
        TypeElement holder = utils.getEnclosingTypeElement(method);
        if (!(utils.isPublic(holder) || utils.isLinkable(holder))) {
            //This is an implementation detail that should not be documented.
            return;
        }
        if (utils.isIncluded(holder) && !utils.isIncluded(method)) {
            //The class is included but the method is not.  That means that it
            //is not visible so don't document this.
            return;
        }

        if (method != null) {
            Contents contents = writer.contents;
            Content label;
            LinkInfoImpl.Kind context;
            if (utils.isAbstract(holder) && utils.isAbstract(method)){
                //Abstract method is implemented from abstract class,
                //not overridden
                label = contents.specifiedByLabel;
                context = LinkInfoImpl.Kind.METHOD_SPECIFIED_BY;
            } else {
                label = contents.overridesLabel;
                context = LinkInfoImpl.Kind.METHOD_OVERRIDES;
            }
            dl.add(HtmlTree.DT(label));
            Content overriddenTypeLink =
                    writer.getLink(new LinkInfoImpl(writer.configuration, context, overriddenType));
            Content codeOverriddenTypeLink = HtmlTree.CODE(overriddenTypeLink);
            Content methlink = writer.getLink(
                    new LinkInfoImpl(writer.configuration, LinkInfoImpl.Kind.MEMBER, holder)
                            .where(writer.links.getName(writer.getAnchor(method)))
                            .label(method.getSimpleName()));
            Content codeMethLink = HtmlTree.CODE(methlink);
            Content dd = HtmlTree.DD(codeMethLink);
            dd.add(Entity.NO_BREAK_SPACE);
            dd.add(contents.inClass);
            dd.add(Entity.NO_BREAK_SPACE);
            dd.add(codeOverriddenTypeLink);
            dl.add(dd);
        }
    }

    
Adds "implements" information for a method (if appropriate)
into a definition list.
Params:
writer – the writer for the method
method – the method
dl –     the definition list/**
     * Adds "implements" information for a method (if appropriate)
     * into a definition list.
     *
     * @param writer the writer for the method
     * @param method the method
     * @param dl     the definition list
     */
    protected static void addImplementsInfo(HtmlDocletWriter writer,
                                            ExecutableElement method,
                                            Content dl) {
        Utils utils = writer.utils;
        if (utils.isStatic(method) || writer.options.noComment()) {
            return;
        }
        Contents contents = writer.contents;
        VisibleMemberTable vmt = writer.configuration
                .getVisibleMemberTable(utils.getEnclosingTypeElement(method));
        SortedSet<ExecutableElement> implementedMethods =
                new TreeSet<>(utils.comparators.makeOverrideUseComparator());
        implementedMethods.addAll(vmt.getImplementedMethods(method));
        for (ExecutableElement implementedMeth : implementedMethods) {
            TypeMirror intfac = vmt.getImplementedMethodHolder(method, implementedMeth);
            intfac = utils.getDeclaredType(utils.getEnclosingTypeElement(method), intfac);
            Content intfaclink = writer.getLink(new LinkInfoImpl(
                    writer.configuration, LinkInfoImpl.Kind.METHOD_SPECIFIED_BY, intfac));
            Content codeIntfacLink = HtmlTree.CODE(intfaclink);
            dl.add(HtmlTree.DT(contents.specifiedByLabel));
            Content methlink = writer.getDocLink(
                    LinkInfoImpl.Kind.MEMBER, implementedMeth,
                    implementedMeth.getSimpleName(), false);
            Content codeMethLink = HtmlTree.CODE(methlink);
            Content dd = HtmlTree.DD(codeMethLink);
            dd.add(Entity.NO_BREAK_SPACE);
            dd.add(contents.inInterface);
            dd.add(Entity.NO_BREAK_SPACE);
            dd.add(codeIntfacLink);
            dl.add(dd);
        }
    }

    
Get the return type for the given method.
Params:
method – the method being documented.
Returns:
content containing the return type/**
     * Get the return type for the given method.
     *
     * @param method the method being documented.
     * @return content containing the return type
     */
    protected Content getReturnType(ExecutableElement method) {
        TypeMirror type = utils.getReturnType(typeElement, method);
        if (type != null) {
            return writer.getLink(new LinkInfoImpl(configuration, LinkInfoImpl.Kind.RETURN_TYPE, type));
        }
        return new ContentBuilder();
    }

    @Override
    public Content getMemberTreeHeader(){
        return writer.getMemberTreeHeader();
    }
}