jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@75ab654b5cd5

     1 /*

     2  * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.tools.javac.api;

    28 import java.io.File;

    29 import java.io.IOException;

    30 import java.nio.CharBuffer;

    31 import java.util.*;

    32 import java.util.concurrent.atomic.AtomicBoolean;

    34 import javax.annotation.processing.Processor;

    35 import javax.lang.model.element.Element;

    36 import javax.lang.model.element.TypeElement;

    37 import javax.lang.model.type.TypeMirror;

    38 import javax.tools.*;

    40 import com.sun.source.tree.*;

    41 import com.sun.source.util.*;

    42 import com.sun.tools.javac.code.*;

    43 import com.sun.tools.javac.code.Symbol.*;

    44 import com.sun.tools.javac.comp.*;

    45 import com.sun.tools.javac.file.JavacFileManager;

    46 import com.sun.tools.javac.main.*;

    47 import com.sun.tools.javac.main.JavaCompiler;

    48 import com.sun.tools.javac.model.*;

    49 import com.sun.tools.javac.parser.Parser;

    50 import com.sun.tools.javac.parser.ParserFactory;

    51 import com.sun.tools.javac.tree.*;

    52 import com.sun.tools.javac.tree.JCTree.*;

    53 import com.sun.tools.javac.util.*;

    54 import com.sun.tools.javac.util.List;

    56 /**

    57  * Provides access to functionality specific to the JDK Java Compiler, javac.

    58  *

    59  * <p><b>This is NOT part of any supported API.

    60  * If you write code that depends on this, you do so at your own

    61  * risk.  This code and its internal interfaces are subject to change

    62  * or deletion without notice.</b></p>

    63  *

    64  * @author Peter von der Ah&eacute;

    65  * @author Jonathan Gibbons

    66  */

    67 public class JavacTaskImpl extends BasicJavacTask {

    68     private Main compilerMain;

    69     private JavaCompiler compiler;

    70     private Locale locale;

    71     private String[] args;

    72     private String[] classNames;

    73     private List<JavaFileObject> fileObjects;

    74     private Map<JavaFileObject, JCCompilationUnit> notYetEntered;

    75     private ListBuffer<Env<AttrContext>> genList;

    76     private final AtomicBoolean used = new AtomicBoolean();

    77     private Iterable<? extends Processor> processors;

    79     private Main.Result result = null;

    81     JavacTaskImpl(Main compilerMain,

    82                 String[] args,

    83                 String[] classNames,

    84                 Context context,

    85                 List<JavaFileObject> fileObjects) {

    86         super(null, false);

    87         this.compilerMain = compilerMain;

    88         this.args = args;

    89         this.classNames = classNames;

    90         this.context = context;

    91         this.fileObjects = fileObjects;

    92         setLocale(Locale.getDefault());

    93         // null checks

    94         compilerMain.getClass();

    95         args.getClass();

    96         fileObjects.getClass();

    97     }

    99     JavacTaskImpl(Main compilerMain,

   100                 Iterable<String> args,

   101                 Context context,

   102                 Iterable<String> classes,

   103                 Iterable<? extends JavaFileObject> fileObjects) {

   104         this(compilerMain, toArray(args), toArray(classes), context, toList(fileObjects));

   105     }

   107     static private String[] toArray(Iterable<String> iter) {

   108         ListBuffer<String> result = new ListBuffer<String>();

   109         if (iter != null)

   110             for (String s : iter)

   111                 result.append(s);

   112         return result.toArray(new String[result.length()]);

   113     }

   115     static private List<JavaFileObject> toList(Iterable<? extends JavaFileObject> fileObjects) {

   116         if (fileObjects == null)

   117             return List.nil();

   118         ListBuffer<JavaFileObject> result = new ListBuffer<JavaFileObject>();

   119         for (JavaFileObject fo : fileObjects)

   120             result.append(fo);

   121         return result.toList();

   122     }

   124     public Boolean call() {

   125         if (!used.getAndSet(true)) {

   126             initContext();

   127             notYetEntered = new HashMap<JavaFileObject, JCCompilationUnit>();

   128             compilerMain.setAPIMode(true);

   129             result = compilerMain.compile(args, classNames, context, fileObjects, processors);

   130             cleanup();

   131             return result.isOK();

   132         } else {

   133             throw new IllegalStateException("multiple calls to method 'call'");

   134         }

   135     }

   137     public void setProcessors(Iterable<? extends Processor> processors) {

   138         processors.getClass(); // null check

   139         // not mt-safe

   140         if (used.get())

   141             throw new IllegalStateException();

   142         this.processors = processors;

   143     }

   145     public void setLocale(Locale locale) {

   146         if (used.get())

   147             throw new IllegalStateException();

   148         this.locale = locale;

   149     }

   151     private void prepareCompiler() throws IOException {

   152         if (used.getAndSet(true)) {

   153             if (compiler == null)

   154                 throw new IllegalStateException();

   155         } else {

   156             initContext();

   157             compilerMain.setOptions(Options.instance(context));

   158             compilerMain.filenames = new LinkedHashSet<File>();

   159             Collection<File> filenames = compilerMain.processArgs(CommandLine.parse(args), classNames);

   160             if (!filenames.isEmpty())

   161                 throw new IllegalArgumentException("Malformed arguments " + toString(filenames, " "));

   162             compiler = JavaCompiler.instance(context);

   163             compiler.keepComments = true;

   164             compiler.genEndPos = true;

   165             // NOTE: this value will be updated after annotation processing

   166             compiler.initProcessAnnotations(processors);

   167             notYetEntered = new HashMap<JavaFileObject, JCCompilationUnit>();

   168             for (JavaFileObject file: fileObjects)

   169                 notYetEntered.put(file, null);

   170             genList = new ListBuffer<Env<AttrContext>>();

   171             // endContext will be called when all classes have been generated

   172             // TODO: should handle the case after each phase if errors have occurred

   173             args = null;

   174             classNames = null;

   175         }

   176     }

   178     <T> String toString(Iterable<T> items, String sep) {

   179         String currSep = "";

   180         StringBuilder sb = new StringBuilder();

   181         for (T item: items) {

   182             sb.append(currSep);

   183             sb.append(item.toString());

   184             currSep = sep;

   185         }

   186         return sb.toString();

   187     }

   189     private void initContext() {

   190         context.put(JavacTask.class, this);

   191         //initialize compiler's default locale

   192         context.put(Locale.class, locale);

   193     }

   195     void cleanup() {

   196         if (compiler != null)

   197             compiler.close();

   198         compiler = null;

   199         compilerMain = null;

   200         args = null;

   201         classNames = null;

   202         context = null;

   203         fileObjects = null;

   204         notYetEntered = null;

   205     }

   207     /**

   208      * Construct a JavaFileObject from the given file.

   209      *

   210      * <p><b>TODO: this method is useless here</b></p>

   211      *

   212      * @param file a file

   213      * @return a JavaFileObject from the standard file manager.

   214      */

   215     public JavaFileObject asJavaFileObject(File file) {

   216         JavacFileManager fm = (JavacFileManager)context.get(JavaFileManager.class);

   217         return fm.getRegularFile(file);

   218     }

   220     /**

   221      * Parse the specified files returning a list of abstract syntax trees.

   222      *

   223      * @throws java.io.IOException TODO

   224      * @return a list of abstract syntax trees

   225      */

   226     public Iterable<? extends CompilationUnitTree> parse() throws IOException {

   227         try {

   228             prepareCompiler();

   229             List<JCCompilationUnit> units = compiler.parseFiles(fileObjects);

   230             for (JCCompilationUnit unit: units) {

   231                 JavaFileObject file = unit.getSourceFile();

   232                 if (notYetEntered.containsKey(file))

   233                     notYetEntered.put(file, unit);

   234             }

   235             return units;

   236         }

   237         finally {

   238             parsed = true;

   239             if (compiler != null && compiler.log != null)

   240                 compiler.log.flush();

   241         }

   242     }

   244     private boolean parsed = false;

   246     /**

   247      * Translate all the abstract syntax trees to elements.

   248      *

   249      * @throws IOException TODO

   250      * @return a list of elements corresponding to the top level

   251      * classes in the abstract syntax trees

   252      */

   253     public Iterable<? extends TypeElement> enter() throws IOException {

   254         return enter(null);

   255     }

   257     /**

   258      * Translate the given abstract syntax trees to elements.

   259      *

   260      * @param trees a list of abstract syntax trees.

   261      * @throws java.io.IOException TODO

   262      * @return a list of elements corresponding to the top level

   263      * classes in the abstract syntax trees

   264      */

   265     public Iterable<? extends TypeElement> enter(Iterable<? extends CompilationUnitTree> trees)

   266         throws IOException

   267     {

   268         if (trees == null && notYetEntered != null && notYetEntered.isEmpty())

   269             return List.nil();

   271         prepareCompiler();

   273         ListBuffer<JCCompilationUnit> roots = null;

   275         if (trees == null) {

   276             // If there are still files which were specified to be compiled

   277             // (i.e. in fileObjects) but which have not yet been entered,

   278             // then we make sure they have been parsed and add them to the

   279             // list to be entered.

   280             if (notYetEntered.size() > 0) {

   281                 if (!parsed)

   282                     parse(); // TODO would be nice to specify files needed to be parsed

   283                 for (JavaFileObject file: fileObjects) {

   284                     JCCompilationUnit unit = notYetEntered.remove(file);

   285                     if (unit != null) {

   286                         if (roots == null)

   287                             roots = new ListBuffer<JCCompilationUnit>();

   288                         roots.append(unit);

   289                     }

   290                 }

   291                 notYetEntered.clear();

   292             }

   293         }

   294         else {

   295             for (CompilationUnitTree cu : trees) {

   296                 if (cu instanceof JCCompilationUnit) {

   297                     if (roots == null)

   298                         roots = new ListBuffer<JCCompilationUnit>();

   299                     roots.append((JCCompilationUnit)cu);

   300                     notYetEntered.remove(cu.getSourceFile());

   301                 }

   302                 else

   303                     throw new IllegalArgumentException(cu.toString());

   304             }

   305         }

   307         if (roots == null)

   308             return List.nil();

   310         try {

   311             List<JCCompilationUnit> units = compiler.enterTrees(roots.toList());

   313             if (notYetEntered.isEmpty())

   314                 compiler = compiler.processAnnotations(units);

   316             ListBuffer<TypeElement> elements = new ListBuffer<TypeElement>();

   317             for (JCCompilationUnit unit : units) {

   318                 for (JCTree node : unit.defs) {

   319                     if (node.hasTag(JCTree.Tag.CLASSDEF)) {

   320                         JCClassDecl cdef = (JCClassDecl) node;

   321                         if (cdef.sym != null) // maybe null if errors in anno processing

   322                             elements.append(cdef.sym);

   323                     }

   324                 }

   325             }

   326             return elements.toList();

   327         }

   328         finally {

   329             compiler.log.flush();

   330         }

   331     }

   333     /**

   334      * Complete all analysis.

   335      * @throws IOException TODO

   336      */

   337     @Override

   338     public Iterable<? extends Element> analyze() throws IOException {

   339         return analyze(null);

   340     }

   342     /**

   343      * Complete all analysis on the given classes.

   344      * This can be used to ensure that all compile time errors are reported.

   345      * The classes must have previously been returned from {@link #enter}.

   346      * If null is specified, all outstanding classes will be analyzed.

   347      *

   348      * @param classes a list of class elements

   349      */

   350     // This implementation requires that we open up privileges on JavaCompiler.

   351     // An alternative implementation would be to move this code to JavaCompiler and

   352     // wrap it here

   353     public Iterable<? extends Element> analyze(Iterable<? extends TypeElement> classes) throws IOException {

   354         enter(null);  // ensure all classes have been entered

   356         final ListBuffer<Element> results = new ListBuffer<Element>();

   357         try {

   358             if (classes == null) {

   359                 handleFlowResults(compiler.flow(compiler.attribute(compiler.todo)), results);

   360             } else {

   361                 Filter f = new Filter() {

   362                     public void process(Env<AttrContext> env) {

   363                         handleFlowResults(compiler.flow(compiler.attribute(env)), results);

   364                     }

   365                 };

   366                 f.run(compiler.todo, classes);

   367             }

   368         } finally {

   369             compiler.log.flush();

   370         }

   371         return results;

   372     }

   373     // where

   374         private void handleFlowResults(Queue<Env<AttrContext>> queue, ListBuffer<Element> elems) {

   375             for (Env<AttrContext> env: queue) {

   376                 switch (env.tree.getTag()) {

   377                     case CLASSDEF:

   378                         JCClassDecl cdef = (JCClassDecl) env.tree;

   379                         if (cdef.sym != null)

   380                             elems.append(cdef.sym);

   381                         break;

   382                     case TOPLEVEL:

   383                         JCCompilationUnit unit = (JCCompilationUnit) env.tree;

   384                         if (unit.packge != null)

   385                             elems.append(unit.packge);

   386                         break;

   387                 }

   388             }

   389             genList.addAll(queue);

   390         }

   393     /**

   394      * Generate code.

   395      * @throws IOException TODO

   396      */

   397     @Override

   398     public Iterable<? extends JavaFileObject> generate() throws IOException {

   399         return generate(null);

   400     }

   402     /**

   403      * Generate code corresponding to the given classes.

   404      * The classes must have previously been returned from {@link #enter}.

   405      * If there are classes outstanding to be analyzed, that will be done before

   406      * any classes are generated.

   407      * If null is specified, code will be generated for all outstanding classes.

   408      *

   409      * @param classes a list of class elements

   410      */

   411     public Iterable<? extends JavaFileObject> generate(Iterable<? extends TypeElement> classes) throws IOException {

   412         final ListBuffer<JavaFileObject> results = new ListBuffer<JavaFileObject>();

   413         try {

   414             analyze(null);  // ensure all classes have been parsed, entered, and analyzed

   416             if (classes == null) {

   417                 compiler.generate(compiler.desugar(genList), results);

   418                 genList.clear();

   419             }

   420             else {

   421                 Filter f = new Filter() {

   422                         public void process(Env<AttrContext> env) {

   423                             compiler.generate(compiler.desugar(ListBuffer.of(env)), results);

   424                         }

   425                     };

   426                 f.run(genList, classes);

   427             }

   428             if (genList.isEmpty()) {

   429                 compiler.reportDeferredDiagnostics();

   430                 cleanup();

   431             }

   432         }

   433         finally {

   434             if (compiler != null)

   435                 compiler.log.flush();

   436         }

   437         return results;

   438     }

   440     public TypeMirror getTypeMirror(Iterable<? extends Tree> path) {

   441         // TODO: Should complete attribution if necessary

   442         Tree last = null;

   443         for (Tree node : path)

   444             last = node;

   445         return ((JCTree)last).type;

   446     }

   448     public JavacElements getElements() {

   449         if (context == null)

   450             throw new IllegalStateException();

   451         return JavacElements.instance(context);

   452     }

   454     public JavacTypes getTypes() {

   455         if (context == null)

   456             throw new IllegalStateException();

   457         return JavacTypes.instance(context);

   458     }

   460     public Iterable<? extends Tree> pathFor(CompilationUnitTree unit, Tree node) {

   461         return TreeInfo.pathFor((JCTree) node, (JCTree.JCCompilationUnit) unit).reverse();

   462     }

   464     abstract class Filter {

   465         void run(Queue<Env<AttrContext>> list, Iterable<? extends TypeElement> classes) {

   466             Set<TypeElement> set = new HashSet<TypeElement>();

   467             for (TypeElement item: classes)

   468                 set.add(item);

   470             ListBuffer<Env<AttrContext>> defer = ListBuffer.<Env<AttrContext>>lb();

   471             while (list.peek() != null) {

   472                 Env<AttrContext> env = list.remove();

   473                 ClassSymbol csym = env.enclClass.sym;

   474                 if (csym != null && set.contains(csym.outermostClass()))

   475                     process(env);

   476                 else

   477                     defer = defer.append(env);

   478             }

   480             list.addAll(defer);

   481         }

   483         abstract void process(Env<AttrContext> env);

   484     }

   486     /**

   487      * For internal use only.  This method will be

   488      * removed without warning.

   489      */

   490     public Type parseType(String expr, TypeElement scope) {

   491         if (expr == null || expr.equals(""))

   492             throw new IllegalArgumentException();

   493         compiler = JavaCompiler.instance(context);

   494         JavaFileObject prev = compiler.log.useSource(null);

   495         ParserFactory parserFactory = ParserFactory.instance(context);

   496         Attr attr = Attr.instance(context);

   497         try {

   498             CharBuffer buf = CharBuffer.wrap((expr+"\u0000").toCharArray(), 0, expr.length());

   499             Parser parser = parserFactory.newParser(buf, false, false, false);

   500             JCTree tree = parser.parseType();

   501             return attr.attribType(tree, (Symbol.TypeSymbol)scope);

   502         } finally {

   503             compiler.log.useSource(prev);

   504         }

   505     }

   507 }

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

src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@75ab654b5cd5

src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java