jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@475eb15dfdad

     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.log = Log.instance(context);

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

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

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

   161             if (filenames != null && !filenames.isEmpty())

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

   163             compiler = JavaCompiler.instance(context);

   164             compiler.keepComments = true;

   165             compiler.genEndPos = true;

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

   167             compiler.initProcessAnnotations(processors);

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

   169             for (JavaFileObject file: fileObjects)

   170                 notYetEntered.put(file, null);

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

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

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

   174             args = null;

   175             classNames = null;

   176         }

   177     }

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

   180         String currSep = "";

   181         StringBuilder sb = new StringBuilder();

   182         for (T item: items) {

   183             sb.append(currSep);

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

   185             currSep = sep;

   186         }

   187         return sb.toString();

   188     }

   190     private void initContext() {

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

   192         //initialize compiler's default locale

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

   194     }

   196     void cleanup() {

   197         if (compiler != null)

   198             compiler.close();

   199         compiler = null;

   200         compilerMain = null;

   201         args = null;

   202         classNames = null;

   203         context = null;

   204         fileObjects = null;

   205         notYetEntered = null;

   206     }

   208     /**

   209      * Construct a JavaFileObject from the given file.

   210      *

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

   212      *

   213      * @param file a file

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

   215      */

   216     public JavaFileObject asJavaFileObject(File file) {

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

   218         return fm.getRegularFile(file);

   219     }

   221     /**

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

   223      *

   224      * @throws java.io.IOException TODO

   225      * @return a list of abstract syntax trees

   226      */

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

   228         try {

   229             prepareCompiler();

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

   231             for (JCCompilationUnit unit: units) {

   232                 JavaFileObject file = unit.getSourceFile();

   233                 if (notYetEntered.containsKey(file))

   234                     notYetEntered.put(file, unit);

   235             }

   236             return units;

   237         }

   238         finally {

   239             parsed = true;

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

   241                 compiler.log.flush();

   242         }

   243     }

   245     private boolean parsed = false;

   247     /**

   248      * Translate all the abstract syntax trees to elements.

   249      *

   250      * @throws IOException TODO

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

   252      * classes in the abstract syntax trees

   253      */

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

   255         return enter(null);

   256     }

   258     /**

   259      * Translate the given abstract syntax trees to elements.

   260      *

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

   262      * @throws java.io.IOException TODO

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

   264      * classes in the abstract syntax trees

   265      */

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

   267         throws IOException

   268     {

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

   270             return List.nil();

   272         prepareCompiler();

   274         ListBuffer<JCCompilationUnit> roots = null;

   276         if (trees == null) {

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

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

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

   280             // list to be entered.

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

   282                 if (!parsed)

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

   284                 for (JavaFileObject file: fileObjects) {

   285                     JCCompilationUnit unit = notYetEntered.remove(file);

   286                     if (unit != null) {

   287                         if (roots == null)

   288                             roots = new ListBuffer<JCCompilationUnit>();

   289                         roots.append(unit);

   290                     }

   291                 }

   292                 notYetEntered.clear();

   293             }

   294         }

   295         else {

   296             for (CompilationUnitTree cu : trees) {

   297                 if (cu instanceof JCCompilationUnit) {

   298                     if (roots == null)

   299                         roots = new ListBuffer<JCCompilationUnit>();

   300                     roots.append((JCCompilationUnit)cu);

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

   302                 }

   303                 else

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

   305             }

   306         }

   308         if (roots == null)

   309             return List.nil();

   311         try {

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

   314             if (notYetEntered.isEmpty())

   315                 compiler = compiler.processAnnotations(units);

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

   318             for (JCCompilationUnit unit : units) {

   319                 for (JCTree node : unit.defs) {

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

   321                         JCClassDecl cdef = (JCClassDecl) node;

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

   323                             elements.append(cdef.sym);

   324                     }

   325                 }

   326             }

   327             return elements.toList();

   328         }

   329         finally {

   330             compiler.log.flush();

   331         }

   332     }

   334     /**

   335      * Complete all analysis.

   336      * @throws IOException TODO

   337      */

   338     @Override

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

   340         return analyze(null);

   341     }

   343     /**

   344      * Complete all analysis on the given classes.

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

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

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

   348      *

   349      * @param classes a list of class elements

   350      */

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

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

   353     // wrap it here

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

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

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

   358         try {

   359             if (classes == null) {

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

   361             } else {

   362                 Filter f = new Filter() {

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

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

   365                     }

   366                 };

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

   368             }

   369         } finally {

   370             compiler.log.flush();

   371         }

   372         return results;

   373     }

   374     // where

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

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

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

   378                     case CLASSDEF:

   379                         JCClassDecl cdef = (JCClassDecl) env.tree;

   380                         if (cdef.sym != null)

   381                             elems.append(cdef.sym);

   382                         break;

   383                     case TOPLEVEL:

   384                         JCCompilationUnit unit = (JCCompilationUnit) env.tree;

   385                         if (unit.packge != null)

   386                             elems.append(unit.packge);

   387                         break;

   388                 }

   389             }

   390             genList.addAll(queue);

   391         }

   394     /**

   395      * Generate code.

   396      * @throws IOException TODO

   397      */

   398     @Override

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

   400         return generate(null);

   401     }

   403     /**

   404      * Generate code corresponding to the given classes.

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

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

   407      * any classes are generated.

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

   409      *

   410      * @param classes a list of class elements

   411      */

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

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

   414         try {

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

   417             if (classes == null) {

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

   419                 genList.clear();

   420             }

   421             else {

   422                 Filter f = new Filter() {

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

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

   425                         }

   426                     };

   427                 f.run(genList, classes);

   428             }

   429             if (genList.isEmpty()) {

   430                 compiler.reportDeferredDiagnostics();

   431                 cleanup();

   432             }

   433         }

   434         finally {

   435             if (compiler != null)

   436                 compiler.log.flush();

   437         }

   438         return results;

   439     }

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

   442         // TODO: Should complete attribution if necessary

   443         Tree last = null;

   444         for (Tree node : path)

   445             last = node;

   446         return ((JCTree)last).type;

   447     }

   449     public JavacElements getElements() {

   450         if (context == null)

   451             throw new IllegalStateException();

   452         return JavacElements.instance(context);

   453     }

   455     public JavacTypes getTypes() {

   456         if (context == null)

   457             throw new IllegalStateException();

   458         return JavacTypes.instance(context);

   459     }

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

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

   463     }

   465     abstract class Filter {

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

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

   468             for (TypeElement item: classes)

   469                 set.add(item);

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

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

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

   474                 ClassSymbol csym = env.enclClass.sym;

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

   476                     process(env);

   477                 else

   478                     defer = defer.append(env);

   479             }

   481             list.addAll(defer);

   482         }

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

   485     }

   487     /**

   488      * For internal use only.  This method will be

   489      * removed without warning.

   490      */

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

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

   493             throw new IllegalArgumentException();

   494         compiler = JavaCompiler.instance(context);

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

   496         ParserFactory parserFactory = ParserFactory.instance(context);

   497         Attr attr = Attr.instance(context);

   498         try {

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

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

   501             JCTree tree = parser.parseType();

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

   503         } finally {

   504             compiler.log.useSource(prev);

   505         }

   506     }

   508 }

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

src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@475eb15dfdad

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