jdk.javadoc.internal.tool.JavadocTool Maven / Gradle / Ivy
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/*
* Copyright (c) 2001, 2015, 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.tool;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileManager.Location;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.StandardLocation;
import com.sun.tools.javac.code.ClassFinder;
import com.sun.tools.javac.code.Symbol.Completer;
import com.sun.tools.javac.code.Symbol.CompletionFailure;
import com.sun.tools.javac.comp.Enter;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
import com.sun.tools.javac.util.Abort;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.ListBuffer;
import com.sun.tools.javac.util.Position;
import jdk.javadoc.doclet.DocletEnvironment;
/**
* This class could be the main entry point for Javadoc when Javadoc is used as a
* component in a larger software system. It provides operations to
* construct a new javadoc processor, and to run it on a set of source
* files.
*
* 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 Neal Gafter
*/
public class JavadocTool extends com.sun.tools.javac.main.JavaCompiler {
DocEnv docenv;
final Messager messager;
final ClassFinder javadocFinder;
final Enter javadocEnter;
final Set uniquefiles;
/**
* Construct a new JavaCompiler processor, using appropriately
* extended phases of the underlying compiler.
*/
protected JavadocTool(Context context) {
super(context);
messager = Messager.instance0(context);
javadocFinder = JavadocClassFinder.instance(context);
javadocEnter = JavadocEnter.instance(context);
uniquefiles = new HashSet<>();
}
/**
* For javadoc, the parser needs to keep comments. Overrides method from JavaCompiler.
*/
protected boolean keepComments() {
return true;
}
/**
* Construct a new javadoc tool.
*/
public static JavadocTool make0(Context context) {
Messager messager = null;
try {
// force the use of Javadoc's class finder
JavadocClassFinder.preRegister(context);
// force the use of Javadoc's own enter phase
JavadocEnter.preRegister(context);
// force the use of Javadoc's own member enter phase
JavadocMemberEnter.preRegister(context);
// force the use of Javadoc's own todo phase
JavadocTodo.preRegister(context);
// force the use of Messager as a Log
messager = Messager.instance0(context);
return new JavadocTool(context);
} catch (CompletionFailure ex) {
messager.error(Position.NOPOS, ex.getMessage());
return null;
}
}
public DocletEnvironment getEnvironment(String encoding,
String showAccess,
String overviewpath,
List args,
Iterable fileObjects,
List subPackages,
List excludedPackages,
boolean docClasses,
boolean quiet) throws IOException {
docenv = DocEnv.instance(context);
docenv.intialize(encoding, showAccess, overviewpath, args, fileObjects,
subPackages, excludedPackages, docClasses, quiet);
javadocFinder.sourceCompleter = docClasses ? Completer.NULL_COMPLETER : sourceCompleter;
if (docClasses) {
// If -Xclasses is set, the args should be a series of class names
for (String arg: args) {
if (!isValidPackageName(arg)) // checks
docenv.error(null, "main.illegal_class_name", arg);
}
if (messager.nerrors() != 0) {
return null;
}
return new RootDocImpl(docenv, args);
}
ListBuffer classTrees = new ListBuffer<>();
Set includedPackages = new LinkedHashSet<>();
try {
StandardJavaFileManager fm = docenv.fileManager instanceof StandardJavaFileManager
? (StandardJavaFileManager) docenv.fileManager : null;
Set packageNames = new LinkedHashSet<>();
// Normally, the args should be a series of package names or file names.
// Parse the files and collect the package names.
for (String arg: args) {
if (fm != null && arg.endsWith(".java") && new File(arg).exists()) {
parse(fm.getJavaFileObjects(arg), classTrees, true);
} else if (isValidPackageName(arg)) {
packageNames.add(arg);
} else if (arg.endsWith(".java")) {
if (fm == null)
throw new IllegalArgumentException();
else
docenv.error(null, "main.file_not_found", arg);
} else {
docenv.error(null, "main.illegal_package_name", arg);
}
}
// Parse file objects provide via the DocumentationTool API
parse(fileObjects, classTrees, true);
// Build up the complete list of any packages to be documented
Location location = docenv.fileManager.hasLocation(StandardLocation.SOURCE_PATH)
? StandardLocation.SOURCE_PATH : StandardLocation.CLASS_PATH;
PackageTable t = new PackageTable(docenv.fileManager, location)
.packages(packageNames)
.subpackages(subPackages, excludedPackages);
includedPackages = t.getIncludedPackages();
// Parse the files in the packages to be documented
ListBuffer packageTrees = new ListBuffer<>();
for (String packageName: includedPackages) {
List files = t.getFiles(packageName);
docenv.notice("main.Loading_source_files_for_package", packageName);
if (files.isEmpty())
docenv.warning("main.no_source_files_for_package", packageName);
parse(files, packageTrees, false);
}
if (messager.nerrors() != 0) {
return null;
}
// Enter symbols for all files
docenv.notice("main.Building_tree");
javadocEnter.main(classTrees.toList().appendList(packageTrees.toList()));
} catch (Abort ex) {}
if (messager.nerrors() != 0)
return null;
docenv.root = new RootDocImpl(docenv, listClasses(classTrees.toList()),
new ArrayList<>(includedPackages));
return docenv.root;
}
/** Is the given string a valid package name? */
boolean isValidPackageName(String s) {
int index;
while ((index = s.indexOf('.')) != -1) {
if (!isValidClassName(s.substring(0, index))) return false;
s = s.substring(index+1);
}
return isValidClassName(s);
}
private void parse(Iterable files, ListBuffer trees,
boolean trace) {
for (JavaFileObject fo: files) {
if (uniquefiles.add(fo)) { // ignore duplicates
if (trace)
docenv.notice("main.Loading_source_file", fo.getName());
trees.append(parse(fo));
}
}
}
/** Are surrogates supported?
*/
final static boolean surrogatesSupported = surrogatesSupported();
private static boolean surrogatesSupported() {
try {
boolean b = Character.isHighSurrogate('a');
return true;
} catch (NoSuchMethodError ex) {
return false;
}
}
/**
* Return true if given file name is a valid class name
* (including "package-info").
* @param s the name of the class to check.
* @return true if given class name is a valid class name
* and false otherwise.
*/
public static boolean isValidClassName(String s) {
if (s.length() < 1) return false;
if (s.equals("package-info")) return true;
if (surrogatesSupported) {
int cp = s.codePointAt(0);
if (!Character.isJavaIdentifierStart(cp))
return false;
for (int j=Character.charCount(cp); j listClasses(List trees) {
List result = new ArrayList<>();
for (JCCompilationUnit t : trees) {
for (JCTree def : t.defs) {
if (def.hasTag(JCTree.Tag.CLASSDEF))
result.add((JCClassDecl)def);
}
}
return result;
}
/**
* A table to manage included and excluded packages.
*/
static class PackageTable {
private final Map entries = new LinkedHashMap<>();
private final Set includedPackages = new LinkedHashSet<>();
private final JavaFileManager fm;
private final Location location;
private final Set sourceKinds = EnumSet.of(JavaFileObject.Kind.SOURCE);
/**
* Creates a table to manage included and excluded packages.
* @param fm The file manager used to locate source files
* @param locn the location used to locate source files
*/
PackageTable(JavaFileManager fm, Location locn) {
this.fm = fm;
this.location = locn;
getEntry("").excluded = false;
}
PackageTable packages(Collection packageNames) {
includedPackages.addAll(packageNames);
return this;
}
PackageTable subpackages(Collection packageNames, Collection excludePackageNames)
throws IOException {
for (String p: excludePackageNames) {
getEntry(p).excluded = true;
}
for (String packageName: packageNames) {
for (JavaFileObject fo: fm.list(location, packageName, sourceKinds, true)) {
String binaryName = fm.inferBinaryName(location, fo);
String pn = getPackageName(binaryName);
String simpleName = getSimpleName(binaryName);
Entry e = getEntry(pn);
if (!e.isExcluded() && isValidClassName(simpleName)) {
includedPackages.add(pn);
e.files = (e.files == null
? com.sun.tools.javac.util.List.of(fo)
: e.files.prepend(fo));
}
}
}
return this;
}
/**
* Returns the aggregate set of included packages.
* @return the aggregate set of included packages
*/
Set getIncludedPackages() {
return includedPackages;
}
/**
* Returns the set of source files for a package.
* @param packageName the specified package
* @return the set of file objects for the specified package
* @throws IOException if an error occurs while accessing the files
*/
List getFiles(String packageName) throws IOException {
Entry e = getEntry(packageName);
// The files may have been found as a side effect of searching for subpackages
if (e.files != null)
return e.files;
ListBuffer lb = new ListBuffer<>();
for (JavaFileObject fo: fm.list(location, packageName, sourceKinds, false)) {
String binaryName = fm.inferBinaryName(location, fo);
String simpleName = getSimpleName(binaryName);
if (isValidClassName(simpleName)) {
lb.append(fo);
}
}
return lb.toList();
}
private Entry getEntry(String name) {
Entry e = entries.get(name);
if (e == null)
entries.put(name, e = new Entry(name));
return e;
}
private String getPackageName(String name) {
int lastDot = name.lastIndexOf(".");
return (lastDot == -1 ? "" : name.substring(0, lastDot));
}
private String getSimpleName(String name) {
int lastDot = name.lastIndexOf(".");
return (lastDot == -1 ? name : name.substring(lastDot + 1));
}
class Entry {
final String name;
Boolean excluded;
com.sun.tools.javac.util.List files;
Entry(String name) {
this.name = name;
}
boolean isExcluded() {
if (excluded == null)
excluded = getEntry(getPackageName(name)).isExcluded();
return excluded;
}
}
}
}