jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@497571d34112

     1 /*

     2  * Copyright (c) 2005, 2011, 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.model.*;

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

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

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

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

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

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

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

    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 JavacTask {

    68     private ClientCodeWrapper ccw;

    69     private Main compilerMain;

    70     private JavaCompiler compiler;

    71     private Locale locale;

    72     private String[] args;

    73     private Context context;

    74     private List<JavaFileObject> fileObjects;

    75     private Map<JavaFileObject, JCCompilationUnit> notYetEntered;

    76     private ListBuffer<Env<AttrContext>> genList;

    77     private TaskListener taskListener;

    78     private AtomicBoolean used = new AtomicBoolean();

    79     private Iterable<? extends Processor> processors;

    81     private Main.Result result = null;

    83     JavacTaskImpl(Main compilerMain,

    84                 String[] args,

    85                 Context context,

    86                 List<JavaFileObject> fileObjects) {

    87         this.ccw = ClientCodeWrapper.instance(context);

    88         this.compilerMain = compilerMain;

    89         this.args = args;

    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> flags,

   101                 Context context,

   102                 Iterable<String> classes,

   103                 Iterable<? extends JavaFileObject> fileObjects) {

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

   105     }

   107     static private String[] toArray(Iterable<String> flags, Iterable<String> classes) {

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

   109         if (flags != null)

   110             for (String flag : flags)

   111                 result.append(flag);

   112         if (classes != null)

   113             for (String cls : classes)

   114                 result.append(cls);

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

   116     }

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

   119         if (fileObjects == null)

   120             return List.nil();

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

   122         for (JavaFileObject fo : fileObjects)

   123             result.append(fo);

   124         return result.toList();

   125     }

   127     public Boolean call() {

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

   129             initContext();

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

   131             compilerMain.setAPIMode(true);

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

   133             cleanup();

   134             return result.isOK();

   135         } else {

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

   137         }

   138     }

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

   141         processors.getClass(); // null check

   142         // not mt-safe

   143         if (used.get())

   144             throw new IllegalStateException();

   145         this.processors = processors;

   146     }

   148     public void setLocale(Locale locale) {

   149         if (used.get())

   150             throw new IllegalStateException();

   151         this.locale = locale;

   152     }

   154     private void prepareCompiler() throws IOException {

   155         if (used.getAndSet(true)) {

   156             if (compiler == null)

   157                 throw new IllegalStateException();

   158         } else {

   159             initContext();

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

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

   162             Collection<File> filenames = compilerMain.processArgs(CommandLine.parse(args));

   163             if (!filenames.isEmpty())

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

   165             compiler = JavaCompiler.instance(context);

   166             compiler.keepComments = true;

   167             compiler.genEndPos = true;

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

   169             compiler.initProcessAnnotations(processors);

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

   171             for (JavaFileObject file: fileObjects)

   172                 notYetEntered.put(file, null);

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

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

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

   176             args = null;

   177         }

   178     }

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

   181         String currSep = "";

   182         StringBuilder sb = new StringBuilder();

   183         for (T item: items) {

   184             sb.append(currSep);

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

   186             currSep = sep;

   187         }

   188         return sb.toString();

   189     }

   191     private void initContext() {

   192         context.put(JavacTaskImpl.class, this);

   193         if (context.get(TaskListener.class) != null)

   194             context.put(TaskListener.class, (TaskListener)null);

   195         if (taskListener != null)

   196             context.put(TaskListener.class, ccw.wrap(taskListener));

   197         //initialize compiler's default locale

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

   199     }

   201     void cleanup() {

   202         if (compiler != null)

   203             compiler.close();

   204         compiler = null;

   205         compilerMain = null;

   206         args = null;

   207         context = null;

   208         fileObjects = null;

   209         notYetEntered = null;

   210     }

   212     /**

   213      * Construct a JavaFileObject from the given file.

   214      *

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

   216      *

   217      * @param file a file

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

   219      */

   220     public JavaFileObject asJavaFileObject(File file) {

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

   222         return fm.getRegularFile(file);

   223     }

   225     public void setTaskListener(TaskListener taskListener) {

   226         this.taskListener = taskListener;

   227     }

   229     /**

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

   231      *

   232      * @throws java.io.IOException TODO

   233      * @return a list of abstract syntax trees

   234      */

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

   236         try {

   237             prepareCompiler();

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

   239             for (JCCompilationUnit unit: units) {

   240                 JavaFileObject file = unit.getSourceFile();

   241                 if (notYetEntered.containsKey(file))

   242                     notYetEntered.put(file, unit);

   243             }

   244             return units;

   245         }

   246         finally {

   247             parsed = true;

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

   249                 compiler.log.flush();

   250         }

   251     }

   253     private boolean parsed = false;

   255     /**

   256      * Translate all the abstract syntax trees to elements.

   257      *

   258      * @throws IOException TODO

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

   260      * classes in the abstract syntax trees

   261      */

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

   263         return enter(null);

   264     }

   266     /**

   267      * Translate the given abstract syntax trees to elements.

   268      *

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

   270      * @throws java.io.IOException TODO

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

   272      * classes in the abstract syntax trees

   273      */

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

   275         throws IOException

   276     {

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

   278             return List.nil();

   280         prepareCompiler();

   282         ListBuffer<JCCompilationUnit> roots = null;

   284         if (trees == null) {

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

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

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

   288             // list to be entered.

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

   290                 if (!parsed)

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

   292                 for (JavaFileObject file: fileObjects) {

   293                     JCCompilationUnit unit = notYetEntered.remove(file);

   294                     if (unit != null) {

   295                         if (roots == null)

   296                             roots = new ListBuffer<JCCompilationUnit>();

   297                         roots.append(unit);

   298                     }

   299                 }

   300                 notYetEntered.clear();

   301             }

   302         }

   303         else {

   304             for (CompilationUnitTree cu : trees) {

   305                 if (cu instanceof JCCompilationUnit) {

   306                     if (roots == null)

   307                         roots = new ListBuffer<JCCompilationUnit>();

   308                     roots.append((JCCompilationUnit)cu);

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

   310                 }

   311                 else

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

   313             }

   314         }

   316         if (roots == null)

   317             return List.nil();

   319         try {

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

   322             if (notYetEntered.isEmpty())

   323                 compiler = compiler.processAnnotations(units);

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

   326             for (JCCompilationUnit unit : units) {

   327                 for (JCTree node : unit.defs) {

   328                     if (node.getTag() == JCTree.CLASSDEF) {

   329                         JCClassDecl cdef = (JCClassDecl) node;

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

   331                             elements.append(cdef.sym);

   332                     }

   333                 }

   334             }

   335             return elements.toList();

   336         }

   337         finally {

   338             compiler.log.flush();

   339         }

   340     }

   342     /**

   343      * Complete all analysis.

   344      * @throws IOException TODO

   345      */

   346     @Override

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

   348         return analyze(null);

   349     }

   351     /**

   352      * Complete all analysis on the given classes.

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

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

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

   356      *

   357      * @param classes a list of class elements

   358      */

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

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

   361     // wrap it here

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

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

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

   366         try {

   367             if (classes == null) {

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

   369             } else {

   370                 Filter f = new Filter() {

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

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

   373                     }

   374                 };

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

   376             }

   377         } finally {

   378             compiler.log.flush();

   379         }

   380         return results;

   381     }

   382     // where

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

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

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

   386                     case JCTree.CLASSDEF:

   387                         JCClassDecl cdef = (JCClassDecl) env.tree;

   388                         if (cdef.sym != null)

   389                             elems.append(cdef.sym);

   390                         break;

   391                     case JCTree.TOPLEVEL:

   392                         JCCompilationUnit unit = (JCCompilationUnit) env.tree;

   393                         if (unit.packge != null)

   394                             elems.append(unit.packge);

   395                         break;

   396                 }

   397             }

   398             genList.addAll(queue);

   399         }

   402     /**

   403      * Generate code.

   404      * @throws IOException TODO

   405      */

   406     @Override

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

   408         return generate(null);

   409     }

   411     /**

   412      * Generate code corresponding to the given classes.

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

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

   415      * any classes are generated.

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

   417      *

   418      * @param classes a list of class elements

   419      */

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

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

   422         try {

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

   425             if (classes == null) {

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

   427                 genList.clear();

   428             }

   429             else {

   430                 Filter f = new Filter() {

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

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

   433                         }

   434                     };

   435                 f.run(genList, classes);

   436             }

   437             if (genList.isEmpty()) {

   438                 compiler.reportDeferredDiagnostics();

   439                 cleanup();

   440             }

   441         }

   442         finally {

   443             if (compiler != null)

   444                 compiler.log.flush();

   445         }

   446         return results;

   447     }

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

   450         // TODO: Should complete attribution if necessary

   451         Tree last = null;

   452         for (Tree node : path)

   453             last = node;

   454         return ((JCTree)last).type;

   455     }

   457     public JavacElements getElements() {

   458         if (context == null)

   459             throw new IllegalStateException();

   460         return JavacElements.instance(context);

   461     }

   463     public JavacTypes getTypes() {

   464         if (context == null)

   465             throw new IllegalStateException();

   466         return JavacTypes.instance(context);

   467     }

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

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

   471     }

   473     abstract class Filter {

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

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

   476             for (TypeElement item: classes)

   477                 set.add(item);

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

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

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

   482                 ClassSymbol csym = env.enclClass.sym;

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

   484                     process(env);

   485                 else

   486                     defer = defer.append(env);

   487             }

   489             list.addAll(defer);

   490         }

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

   493     }

   495     /**

   496      * For internal use only.  This method will be

   497      * removed without warning.

   498      */

   499     public Context getContext() {

   500         return context;

   501     }

   503     /**

   504      * For internal use only.  This method will be

   505      * removed without warning.

   506      */

   507     public void updateContext(Context newContext) {

   508         context = newContext;

   509     }

   511     /**

   512      * For internal use only.  This method will be

   513      * removed without warning.

   514      */

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

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

   517             throw new IllegalArgumentException();

   518         compiler = JavaCompiler.instance(context);

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

   520         ParserFactory parserFactory = ParserFactory.instance(context);

   521         Attr attr = Attr.instance(context);

   522         try {

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

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

   525             JCTree tree = parser.parseType();

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

   527         } finally {

   528             compiler.log.useSource(prev);

   529         }

   530     }

   532 }

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

src/share/classes/com/sun/tools/javac/api/JavacTaskImpl.java@497571d34112

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