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/*
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* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.tools.doclets.internal.toolkit.util.links;
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import com.sun.javadoc.*;
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/**
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* A factory that constructs links from given link information.
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*
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* <p><b>This is NOT part of any supported API.
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* If you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*
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* @author Jamie Ho
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* @since 1.5
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*/
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public abstract class LinkFactory {
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/**
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* Return an empty instance of the link output object.
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*
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* @return an empty instance of the link output object.
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*/
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protected abstract LinkOutput getOutputInstance();
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/**
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* Constructs a link from the given link information.
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*
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* @param linkInfo the information about the link.
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* @return the output of the link.
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*/
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public LinkOutput getLinkOutput(LinkInfo linkInfo) {
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if (linkInfo.type != null) {
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Type type = linkInfo.type;
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LinkOutput linkOutput = getOutputInstance();
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if (type.isPrimitive()) {
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//Just a primitive.
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linkInfo.displayLength += type.typeName().length();
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linkOutput.append(type.typeName());
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} else if (type.asAnnotatedType() != null) {
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linkOutput.append(getTypeAnnotationLinks(linkInfo));
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linkInfo.type = type.asAnnotatedType().underlyingType();
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linkOutput.append(getLinkOutput(linkInfo));
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return linkOutput;
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} else if (type.asWildcardType() != null) {
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//Wildcard type.
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linkInfo.isTypeBound = true;
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linkInfo.displayLength += 1;
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linkOutput.append("?");
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WildcardType wildcardType = type.asWildcardType();
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Type[] extendsBounds = wildcardType.extendsBounds();
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for (int i = 0; i < extendsBounds.length; i++) {
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linkInfo.displayLength += i > 0 ? 2 : 9;
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linkOutput.append(i > 0 ? ", " : " extends ");
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setBoundsLinkInfo(linkInfo, extendsBounds[i]);
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linkOutput.append(getLinkOutput(linkInfo));
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}
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Type[] superBounds = wildcardType.superBounds();
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for (int i = 0; i < superBounds.length; i++) {
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linkInfo.displayLength += i > 0 ? 2 : 7;
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linkOutput.append(i > 0 ? ", " : " super ");
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setBoundsLinkInfo(linkInfo, superBounds[i]);
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linkOutput.append(getLinkOutput(linkInfo));
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}
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} else if (type.asTypeVariable()!= null) {
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linkOutput.append(getTypeAnnotationLinks(linkInfo));
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linkInfo.isTypeBound = true;
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//A type variable.
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Doc owner = type.asTypeVariable().owner();
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if ((! linkInfo.excludeTypeParameterLinks) &&
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owner instanceof ClassDoc) {
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linkInfo.classDoc = (ClassDoc) owner;
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linkInfo.label = type.typeName();
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linkOutput.append(getClassLink(linkInfo));
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} else {
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//No need to link method type parameters.
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linkInfo.displayLength += type.typeName().length();
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linkOutput.append(type.typeName());
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}
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Type[] bounds = type.asTypeVariable().bounds();
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if (! linkInfo.excludeTypeBounds) {
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linkInfo.excludeTypeBounds = true;
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for (int i = 0; i < bounds.length; i++) {
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linkInfo.displayLength += i > 0 ? 2 : 9;
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linkOutput.append(i > 0 ? " & " : " extends ");
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setBoundsLinkInfo(linkInfo, bounds[i]);
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linkOutput.append(getLinkOutput(linkInfo));
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}
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}
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} else if (type.asClassDoc() != null) {
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//A class type.
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if (linkInfo.isTypeBound &&
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linkInfo.excludeTypeBoundsLinks) {
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//Since we are excluding type parameter links, we should not
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//be linking to the type bound.
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linkInfo.displayLength += type.typeName().length();
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linkOutput.append(type.typeName());
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linkOutput.append(getTypeParameterLinks(linkInfo));
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return linkOutput;
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} else {
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linkInfo.classDoc = type.asClassDoc();
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linkOutput = getClassLink(linkInfo);
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if (linkInfo.includeTypeAsSepLink) {
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linkOutput.append(getTypeParameterLinks(linkInfo, false));
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}
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}
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}
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if (linkInfo.isVarArg) {
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if (type.dimension().length() > 2) {
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//Javadoc returns var args as array.
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//Strip out the first [] from the var arg.
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linkInfo.displayLength += type.dimension().length()-2;
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linkOutput.append(type.dimension().substring(2));
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}
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linkInfo.displayLength += 3;
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linkOutput.append("...");
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} else {
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linkInfo.displayLength += type.dimension().length();
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linkOutput.append(type.dimension());
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}
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return linkOutput;
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} else if (linkInfo.classDoc != null) {
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//Just a class link
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LinkOutput linkOutput = getClassLink(linkInfo);
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if (linkInfo.includeTypeAsSepLink) {
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linkOutput.append(getTypeParameterLinks(linkInfo, false));
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}
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return linkOutput;
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} else {
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return null;
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}
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}
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private void setBoundsLinkInfo(LinkInfo linkInfo, Type bound) {
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linkInfo.classDoc = null;
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linkInfo.label = null;
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linkInfo.type = bound;
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}
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/**
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* Return the link to the given class.
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*
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* @param linkInfo the information about the link to construct.
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*
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* @return the link for the given class.
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*/
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protected abstract LinkOutput getClassLink(LinkInfo linkInfo);
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/**
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* Return the link to the given type parameter.
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*
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* @param linkInfo the information about the link to construct.
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* @param typeParam the type parameter to link to.
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*/
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protected abstract LinkOutput getTypeParameterLink(LinkInfo linkInfo,
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Type typeParam);
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protected abstract LinkOutput getTypeAnnotationLink(LinkInfo linkInfo,
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AnnotationDesc annotation);
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/**
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* Return the links to the type parameters.
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*
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* @param linkInfo the information about the link to construct.
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* @return the links to the type parameters.
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*/
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public LinkOutput getTypeParameterLinks(LinkInfo linkInfo) {
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return getTypeParameterLinks(linkInfo, true);
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}
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/**
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* Return the links to the type parameters.
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*
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* @param linkInfo the information about the link to construct.
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* @param isClassLabel true if this is a class label. False if it is
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* the type parameters portion of the link.
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* @return the links to the type parameters.
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*/
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public LinkOutput getTypeParameterLinks(LinkInfo linkInfo, boolean isClassLabel) {
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LinkOutput output = getOutputInstance();
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Type[] vars;
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if (linkInfo.executableMemberDoc != null) {
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vars = linkInfo.executableMemberDoc.typeParameters();
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} else if (linkInfo.type != null &&
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linkInfo.type.asParameterizedType() != null){
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vars = linkInfo.type.asParameterizedType().typeArguments();
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} else if (linkInfo.classDoc != null){
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vars = linkInfo.classDoc.typeParameters();
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} else {
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//Nothing to document.
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return output;
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}
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if (((linkInfo.includeTypeInClassLinkLabel && isClassLabel) ||
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(linkInfo.includeTypeAsSepLink && ! isClassLabel)
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)
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&& vars.length > 0) {
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linkInfo.displayLength += 1;
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output.append(getLessThanString());
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for (int i = 0; i < vars.length; i++) {
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if (i > 0) {
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linkInfo.displayLength += 1;
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output.append(",");
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}
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output.append(getTypeParameterLink(linkInfo, vars[i]));
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}
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linkInfo.displayLength += 1;
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output.append(getGreaterThanString());
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}
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return output;
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}
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public LinkOutput getTypeAnnotationLinks(LinkInfo linkInfo) {
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LinkOutput output = getOutputInstance();
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if (linkInfo.type.asAnnotatedType() == null)
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return output;
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AnnotationDesc[] annotations = linkInfo.type.asAnnotatedType().annotations();
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for (int i = 0; i < annotations.length; i++) {
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if (i > 0) {
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linkInfo.displayLength += 1;
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output.append(" ");
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}
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output.append(getTypeAnnotationLink(linkInfo, annotations[i]));
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}
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linkInfo.displayLength += 1;
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output.append(" ");
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return output;
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}
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/**
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* Return &lt;, which is used in type parameters. Override this
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* if your doclet uses something different.
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*
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* @return return &lt;, which is used in type parameters.
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*/
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protected String getLessThanString() {
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return "<";
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}
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/**
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* Return &gt;, which is used in type parameters. Override this
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* if your doclet uses something different.
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*
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* @return return &gt;, which is used in type parameters.
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*/
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protected String getGreaterThanString() {
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return ">";
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}
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}
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