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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.List;

import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.ArrayType;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.ExecutableType;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.type.TypeVariable;
import javax.lang.model.util.SimpleTypeVisitor9;

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.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.util.DocletConstants;

import static jdk.javadoc.internal.doclets.formats.html.LinkInfoImpl.Kind.EXECUTABLE_MEMBER_PARAM;
import static jdk.javadoc.internal.doclets.formats.html.LinkInfoImpl.Kind.MEMBER;
import static jdk.javadoc.internal.doclets.formats.html.LinkInfoImpl.Kind.MEMBER_TYPE_PARAMS;
import static jdk.javadoc.internal.doclets.formats.html.LinkInfoImpl.Kind.RECEIVER_TYPE;

Print method and constructor info.
 
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.
/**
 * Print method and constructor info.
 *
 *  <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 abstract class AbstractExecutableMemberWriter extends AbstractMemberWriter {

    public AbstractExecutableMemberWriter(SubWriterHolderWriter writer, TypeElement typeElement) {
        super(writer, typeElement);
    }

    public AbstractExecutableMemberWriter(SubWriterHolderWriter writer) {
        super(writer);
    }


    
Get the type parameters for the executable member.
Params:
member – the member for which to get the type parameters.
Returns:
the type parameters./**
     * Get the type parameters for the executable member.
     *
     * @param member the member for which to get the type parameters.
     * @return the type parameters.
     */
    protected Content getTypeParameters(ExecutableElement member) {
        LinkInfoImpl linkInfo = new LinkInfoImpl(configuration, MEMBER_TYPE_PARAMS, member);
        return writer.getTypeParameterLinks(linkInfo);
    }

    @Override
    protected Content getDeprecatedLink(Element member) {
        Content deprecatedLinkContent = new ContentBuilder();
        deprecatedLinkContent.add(utils.getFullyQualifiedName(member));
        if (!utils.isConstructor(member)) {
            deprecatedLinkContent.add(".");
            deprecatedLinkContent.add(member.getSimpleName());
        }
        String signature = utils.flatSignature((ExecutableElement) member, typeElement);
        if (signature.length() > 2) {
            deprecatedLinkContent.add(Entity.ZERO_WIDTH_SPACE);
        }
        deprecatedLinkContent.add(signature);

        return writer.getDocLink(MEMBER, utils.getEnclosingTypeElement(member), member, deprecatedLinkContent);
    }

    
Add the summary link for the member.
Params:
context – the id of the context where the link will be printed
te – the type element being linked to
member – the member being linked to
tdSummary – the content tree to which the link will be added/**
     * Add the summary link for the member.
     *
     * @param context the id of the context where the link will be printed
     * @param te the type element being linked to
     * @param member the member being linked to
     * @param tdSummary the content tree to which the link will be added
     */
    @Override
    protected void addSummaryLink(LinkInfoImpl.Kind context, TypeElement te, Element member,
            Content tdSummary) {
        ExecutableElement ee = (ExecutableElement)member;
        Content memberLink = HtmlTree.SPAN(HtmlStyle.memberNameLink,
                writer.getDocLink(context, te, ee, name(ee), false));
        Content code = HtmlTree.CODE(memberLink);
        addParameters(ee, code);
        tdSummary.add(code);
    }

    
Add the inherited summary link for the member.
Params:
te – the type element that we should link to
member – the member being linked to
linksTree – the content tree to which the link will be added/**
     * Add the inherited summary link for the member.
     *
     * @param te the type element that we should link to
     * @param member the member being linked to
     * @param linksTree the content tree to which the link will be added
     */
    @Override
    protected void addInheritedSummaryLink(TypeElement te, Element member, Content linksTree) {
        linksTree.add(writer.getDocLink(MEMBER, te, member, name(member), false));
    }

    
Add the parameter for the executable member.
Params:
member – the member to write parameter for.
param – the parameter that needs to be written.
isVarArg – true if this is a link to var arg.
tree – the content tree to which the parameter information will be added./**
     * Add the parameter for the executable member.
     *
     * @param member the member to write parameter for.
     * @param param the parameter that needs to be written.
     * @param isVarArg true if this is a link to var arg.
     * @param tree the content tree to which the parameter information will be added.
     */
    protected void addParam(ExecutableElement member, VariableElement param, TypeMirror paramType,
            boolean isVarArg, Content tree) {
        Content link = writer.getLink(new LinkInfoImpl(configuration, EXECUTABLE_MEMBER_PARAM,
                paramType).varargs(isVarArg));
        tree.add(link);
        if(name(param).length() > 0) {
            tree.add(Entity.NO_BREAK_SPACE);
            tree.add(name(param));
        }
    }

    
Add the receiver annotations information.
Params:
member – the member to write receiver annotations for.
rcvrType – the receiver type.
annotationMirrors – list of annotation descriptions.
tree – the content tree to which the information will be added./**
     * Add the receiver annotations information.
     *
     * @param member the member to write receiver annotations for.
     * @param rcvrType the receiver type.
     * @param annotationMirrors list of annotation descriptions.
     * @param tree the content tree to which the information will be added.
     */
    protected void addReceiverAnnotations(ExecutableElement member, TypeMirror rcvrType,
            List<? extends AnnotationMirror> annotationMirrors, Content tree) {
        writer.addReceiverAnnotationInfo(member, rcvrType, annotationMirrors, tree);
        tree.add(Entity.NO_BREAK_SPACE);
        tree.add(utils.getTypeName(rcvrType, false));
        LinkInfoImpl linkInfo = new LinkInfoImpl(configuration, RECEIVER_TYPE, rcvrType);
        tree.add(writer.getTypeParameterLinks(linkInfo));
        tree.add(Entity.NO_BREAK_SPACE);
        tree.add("this");
    }


    
Add all the parameters for the executable member.
Params:
member – the member to write parameters for.
htmltree – the content tree to which the parameters information will be added./**
     * Add all the parameters for the executable member.
     *
     * @param member the member to write parameters for.
     * @param htmltree the content tree to which the parameters information will be added.
     */
    protected void addParameters(ExecutableElement member, Content htmltree) {
        Content paramTree = getParameters(member, false);
        if (paramTree.isEmpty()) {
            htmltree.add("()");
        } else {
            htmltree.add(Entity.ZERO_WIDTH_SPACE);
            htmltree.add("(");
            htmltree.add(paramTree);
            paramTree.add(")");
        }
    }

    
Add all the parameters for the executable member.
Params:
member – the member to write parameters for.
includeAnnotations – true if annotation information needs to be added.
Returns:
the content tree containing the parameter information/**
     * Add all the parameters for the executable member.
     *
     * @param member the member to write parameters for.
     * @param includeAnnotations true if annotation information needs to be added.
     * @return the content tree containing the parameter information
     */
    protected Content getParameters(ExecutableElement member, boolean includeAnnotations) {
        Content paramTree = new ContentBuilder();
        String sep = "";
        List<? extends VariableElement> parameters = member.getParameters();
        TypeMirror rcvrType = member.getReceiverType();
        if (includeAnnotations && rcvrType != null && utils.isAnnotated(rcvrType)) {
            List<? extends AnnotationMirror> annotationMirrors = rcvrType.getAnnotationMirrors();
            addReceiverAnnotations(member, rcvrType, annotationMirrors, paramTree);
            sep = "," + DocletConstants.NL;
        }
        int paramstart;
        ExecutableType instMeth = utils.asInstantiatedMethodType(typeElement, member);
        for (paramstart = 0; paramstart < parameters.size(); paramstart++) {
            paramTree.add(sep);
            VariableElement param = parameters.get(paramstart);
            TypeMirror paramType = instMeth.getParameterTypes().get(paramstart);

            if (param.getKind() != ElementKind.INSTANCE_INIT) {
                if (includeAnnotations) {
                    boolean foundAnnotations =
                            writer.addAnnotationInfo(param, paramTree);
                    if (foundAnnotations) {
                        paramTree.add(DocletConstants.NL);
                    }
                }
                addParam(member, param, paramType,
                    (paramstart == parameters.size() - 1) && member.isVarArgs(), paramTree);
                break;
            }
        }

        for (int i = paramstart + 1; i < parameters.size(); i++) {
            paramTree.add(",");
            paramTree.add(DocletConstants.NL);
            if (includeAnnotations) {
                boolean foundAnnotations =
                        writer.addAnnotationInfo(parameters.get(i),
                        paramTree);
                if (foundAnnotations) {
                    paramTree.add(DocletConstants.NL);
                }
            }
            addParam(member, parameters.get(i), instMeth.getParameterTypes().get(i),
                    (i == parameters.size() - 1) && member.isVarArgs(),
                    paramTree);
        }

        return paramTree;
    }

    
Get a content tree containing the exception information for the executable member.
Params:
member – the member to write exceptions for.
Returns:
the content tree containing the exceptions information./**
     * Get a content tree containing the exception information for the executable member.
     *
     * @param member the member to write exceptions for.
     * @return the content tree containing the exceptions information.
     */
    protected Content getExceptions(ExecutableElement member) {
        List<? extends TypeMirror> exceptions = utils.asInstantiatedMethodType(typeElement, member).getThrownTypes();
        Content htmltree = new ContentBuilder();
        if (!exceptions.isEmpty()) {
            Content link = writer.getLink(new LinkInfoImpl(configuration, MEMBER, exceptions.get(0)));
            htmltree.add(link);
            for (int i = 1; i < exceptions.size(); i++) {
                htmltree.add(",");
                htmltree.add(DocletConstants.NL);
                Content exceptionLink = writer.getLink(new LinkInfoImpl(configuration, MEMBER,
                        exceptions.get(i)));
                htmltree.add(exceptionLink);
            }
        }
        return htmltree;
    }

    protected TypeElement implementsMethodInIntfac(ExecutableElement method,
                                                List<TypeElement> intfacs) {
        for (TypeElement intf : intfacs) {
            List<ExecutableElement> methods = utils.getMethods(intf);
            if (!methods.isEmpty()) {
                for (ExecutableElement md : methods) {
                    if (name(md).equals(name(method)) &&
                        md.toString().equals(method.toString())) {
                        return intf;
                    }
                }
            }
        }
        return null;
    }

    
For backward compatibility, include an anchor using the erasures of the
parameters.  NOTE:  We won't need this method anymore after we fix
see tags so that they use the type instead of the erasure.
Params:
executableElement – the ExecutableElement to anchor to.
Returns:
the 1.4.x style anchor for the executable element./**
     * For backward compatibility, include an anchor using the erasures of the
     * parameters.  NOTE:  We won't need this method anymore after we fix
     * see tags so that they use the type instead of the erasure.
     *
     * @param executableElement the ExecutableElement to anchor to.
     * @return the 1.4.x style anchor for the executable element.
     */
    protected String getErasureAnchor(ExecutableElement executableElement) {
        final StringBuilder buf = new StringBuilder(writer.anchorName(executableElement));
        buf.append("(");
        List<? extends VariableElement> parameters = executableElement.getParameters();
        boolean foundTypeVariable = false;
        for (int i = 0; i < parameters.size(); i++) {
            if (i > 0) {
                buf.append(",");
            }
            TypeMirror t = parameters.get(i).asType();
            SimpleTypeVisitor9<Boolean, Void> stv = new SimpleTypeVisitor9<Boolean, Void>() {
                boolean foundTypeVariable = false;

                @Override
                public Boolean visitArray(ArrayType t, Void p) {
                    visit(t.getComponentType());
                    buf.append(utils.getDimension(t));
                    return foundTypeVariable;
                }

                @Override
                public Boolean visitTypeVariable(TypeVariable t, Void p) {
                    buf.append(utils.asTypeElement(t).getQualifiedName());
                    foundTypeVariable = true;
                    return foundTypeVariable;
                }

                @Override
                public Boolean visitDeclared(DeclaredType t, Void p) {
                    buf.append(utils.getQualifiedTypeName(t));
                    return foundTypeVariable;
                }

                @Override
                protected Boolean defaultAction(TypeMirror e, Void p) {
                    buf.append(e);
                    return foundTypeVariable;
                }
            };

            boolean isTypeVariable = stv.visit(t);
            if (!foundTypeVariable) {
                foundTypeVariable = isTypeVariable;
            }
        }
        buf.append(")");
        return foundTypeVariable ? writer.links.getName(buf.toString()) : null;
    }
}