jdk8-mips64-public/langtools: src/share/classes/javax/tools/JavaCompiler.java@9a66ca7c79fa (annotated)

src/share/classes/javax/tools/JavaCompiler.java@9a66ca7c79fa (annotated)

src/share/classes/javax/tools/JavaCompiler.java

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 1: 9a66ca7c79fa
child 375: 2ce3597237f0
permissions: -rw-r--r--

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 /*
  * Copyright 2005-2006 Sun Microsystems, Inc.  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.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */
 package javax.tools;
 import java.io.File;
 import java.io.InputStream;
 import java.io.Writer;
 import java.nio.charset.Charset;
 import java.util.List;
 import java.util.Locale;
 import java.util.concurrent.Callable;
 import javax.annotation.processing.Processor;
 /**
  * Interface to invoke Java&trade; programming language compilers from
  * programs.
  *
  * <p>The compiler might generate diagnostics during compilation (for
  * example, error messages).  If a diagnostic listener is provided,
  * the diagnostics will be supplied to the listener.  If no listener
  * is provided, the diagnostics will be formatted in an unspecified
  * format and written to the default output, which is {@code
  * System.err} unless otherwise specified.  Even if a diagnostic
  * listener is supplied, some diagnostics might not fit in a {@code
  * Diagnostic} and will be written to the default output.
  *
  * <p>A compiler tool has an associated standard file manager, which
  * is the file manager that is native to the tool (or built-in).  The
  * standard file manager can be obtained by calling {@linkplain
  * #getStandardFileManager getStandardFileManager}.
  *
  * <p>A compiler tool must function with any file manager as long as
  * any additional requirements as detailed in the methods below are
  * met.  If no file manager is provided, the compiler tool will use a
  * standard file manager such as the one returned by {@linkplain
  * #getStandardFileManager getStandardFileManager}.
  *
  * <p>An instance implementing this interface must conform to the Java
  * Language Specification and generate class files conforming to the
  * Java Virtual Machine specification.  The versions of these
  * specifications are defined in the {@linkplain Tool} interface.
  *
  * Additionally, an instance of this interface supporting {@link
  * javax.lang.model.SourceVersion#RELEASE_6 SourceVersion.RELEASE_6}
  * or higher must also support {@linkplain javax.annotation.processing
  * annotation processing}.
  *
  * <p>The compiler relies on two services: {@linkplain
  * DiagnosticListener diagnostic listener} and {@linkplain
  * JavaFileManager file manager}.  Although most classes and
  * interfaces in this package defines an API for compilers (and
  * tools in general) the interfaces {@linkplain DiagnosticListener},
  * {@linkplain JavaFileManager}, {@linkplain FileObject}, and
  * {@linkplain JavaFileObject} are not intended to be used in
  * applications.  Instead these interfaces are intended to be
  * implemented and used to provide customized services for a
  * compiler and thus defines an SPI for compilers.
  *
  * <p>There are a number of classes and interfaces in this package
  * which are designed to ease the implementation of the SPI to
  * customize the behavior of a compiler:
  *
  * <dl>
  *   <dt>{@link StandardJavaFileManager}</dt>
  *   <dd>
  *
  *     Every compiler which implements this interface provides a
  *     standard file manager for operating on regular {@linkplain
  *     java.io.File files}.  The StandardJavaFileManager interface
  *     defines additional methods for creating file objects from
  *     regular files.
  *
  *     <p>The standard file manager serves two purposes:
  *
  *     <ul>
  *       <li>basic building block for customizing how a compiler reads
  *       and writes files</li>
  *       <li>sharing between multiple compilation tasks</li>
  *     </ul>
  *
  *     <p>Reusing a file manager can potentially reduce overhead of
  *     scanning the file system and reading jar files.  Although there
  *     might be no reduction in overhead, a standard file manager must
  *     work with multiple sequential compilations making the following
  *     example a recommended coding pattern:
  *
  *     <pre>
  *       Files[] files1 = ... ; // input for first compilation task
  *       Files[] files2 = ... ; // input for second compilation task
  *
  *       JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
  *       StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);
  *
  *       {@code Iterable<? extends JavaFileObject>} compilationUnits1 =
  *           fileManager.getJavaFileObjectsFromFiles({@linkplain java.util.Arrays#asList Arrays.asList}(files1));
  *       compiler.getTask(null, fileManager, null, null, null, compilationUnits1).call();
  *
  *       {@code Iterable<? extends JavaFileObject>} compilationUnits2 =
  *           fileManager.getJavaFileObjects(files2); // use alternative method
  *       // reuse the same file manager to allow caching of jar files
  *       compiler.getTask(null, fileManager, null, null, null, compilationUnits2).call();
  *
  *       fileManager.close();</pre>
  *
  *   </dd>
  *
  *   <dt>{@link DiagnosticCollector}</dt>
  *   <dd>
  *     Used to collect diagnostics in a list, for example:
  *     <pre>
  *       {@code Iterable<? extends JavaFileObject>} compilationUnits = ...;
  *       JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
  *       {@code DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();}
  *       StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);
  *       compiler.getTask(null, fileManager, diagnostics, null, null, compilationUnits).call();
  *
  *       for (Diagnostic diagnostic : diagnostics.getDiagnostics())
  *           System.out.format("Error on line %d in %d%n",
  *                             diagnostic.getLineNumber()
  *                             diagnostic.getSource().toUri());
  *
  *       fileManager.close();</pre>
  *   </dd>
  *
  *   <dt>
  *     {@link ForwardingJavaFileManager}, {@link ForwardingFileObject}, and
  *     {@link ForwardingJavaFileObject}
  *   </dt>
  *   <dd>
  *
  *     Subclassing is not available for overriding the behavior of a
  *     standard file manager as it is created by calling a method on a
  *     compiler, not by invoking a constructor.  Instead forwarding
  *     (or delegation) should be used.  These classes makes it easy to
  *     forward most calls to a given file manager or file object while
  *     allowing customizing behavior.  For example, consider how to
  *     log all calls to {@linkplain JavaFileManager#flush}:
  *
  *     <pre>
  *       final {@linkplain java.util.logging.Logger Logger} logger = ...;
  *       {@code Iterable<? extends JavaFileObject>} compilationUnits = ...;
  *       JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
  *       StandardJavaFileManager stdFileManager = compiler.getStandardFileManager(null, null, null);
  *       JavaFileManager fileManager = new ForwardingJavaFileManager(stdFileManager) {
  *           public void flush() {
  *               logger.entering(StandardJavaFileManager.class.getName(), "flush");
  *               super.flush();
  *               logger.exiting(StandardJavaFileManager.class.getName(), "flush");
  *           }
  *       };
  *       compiler.getTask(null, fileManager, null, null, null, compilationUnits).call();</pre>
  *   </dd>
  *
  *   <dt>{@link SimpleJavaFileObject}</dt>
  *   <dd>
  *
  *     This class provides a basic file object implementation which
  *     can be used as building block for creating file objects.  For
  *     example, here is how to define a file object which represent
  *     source code stored in a string:
  *
  *     <pre>
  *       /**
  *        * A file object used to represent source coming from a string.
  *        {@code *}/
  *       public class JavaSourceFromString extends SimpleJavaFileObject {
  *           /**
  *            * The source code of this "file".
  *            {@code *}/
  *           final String code;
  *
  *           /**
  *            * Constructs a new JavaSourceFromString.
  *            * {@code @}param name the name of the compilation unit represented by this file object
  *            * {@code @}param code the source code for the compilation unit represented by this file object
  *            {@code *}/
  *           JavaSourceFromString(String name, String code) {
  *               super({@linkplain java.net.URI#create URI.create}("string:///" + name.replace('.','/') + Kind.SOURCE.extension),
  *                     Kind.SOURCE);
  *               this.code = code;
  *           }
  *
  *           {@code @}Override
  *           public CharSequence getCharContent(boolean ignoreEncodingErrors) {
  *               return code;
  *           }
  *       }</pre>
  *   </dd>
  * </dl>
  *
  * @author Peter von der Ah&eacute;
  * @author Jonathan Gibbons
  * @see DiagnosticListener
  * @see Diagnostic
  * @see JavaFileManager
  * @since 1.6
  */
 public interface JavaCompiler extends Tool, OptionChecker {
     /**
      * Creates a future for a compilation task with the given
      * components and arguments.  The compilation might not have
      * completed as described in the CompilationTask interface.
      *
      * <p>If a file manager is provided, it must be able to handle all
      * locations defined in {@link StandardLocation}.
      *
      * @param out a Writer for additional output from the compiler;
      * use {@code System.err} if {@code null}
      * @param fileManager a file manager; if {@code null} use the
      * compiler's standard filemanager
      * @param diagnosticListener a diagnostic listener; if {@code
      * null} use the compiler's default method for reporting
      * diagnostics
      * @param options compiler options, {@code null} means no options
      * @param classes class names (for annotation processing), {@code
      * null} means no class names
      * @param compilationUnits the compilation units to compile, {@code
      * null} means no compilation units
      * @return an object representing the compilation
      * @throws RuntimeException if an unrecoverable error
      * occurred in a user supplied component.  The
      * {@linkplain Throwable#getCause() cause} will be the error in
      * user code.
      * @throws IllegalArgumentException if any of the given
      * compilation units are of other kind than
      * {@linkplain JavaFileObject.Kind#SOURCE source}
      */
     CompilationTask getTask(Writer out,
                             JavaFileManager fileManager,
                             DiagnosticListener<? super JavaFileObject> diagnosticListener,
                             Iterable<String> options,
                             Iterable<String> classes,
                             Iterable<? extends JavaFileObject> compilationUnits);
     /**
      * Gets a new instance of the standard file manager implementation
      * for this tool.  The file manager will use the given diagnostic
      * listener for producing any non-fatal diagnostics.  Fatal errors
      * will be signalled with the appropriate exceptions.
      *
      * <p>The standard file manager will be automatically reopened if
      * it is accessed after calls to {@code flush} or {@code close}.
      * The standard file manager must be usable with other tools.
      *
      * @param diagnosticListener a diagnostic listener for non-fatal
      * diagnostics; if {@code null} use the compiler's default method
      * for reporting diagnostics
      * @param locale the locale to apply when formatting diagnostics;
      * {@code null} means the {@linkplain Locale#getDefault() default locale}.
      * @param charset the character set used for decoding bytes; if
      * {@code null} use the platform default
      * @return the standard file manager
      */
     StandardJavaFileManager getStandardFileManager(
         DiagnosticListener<? super JavaFileObject> diagnosticListener,
         Locale locale,
         Charset charset);
     /**
      * Interface representing a future for a compilation task.  The
      * compilation task has not yet started.  To start the task, call
      * the {@linkplain #call call} method.
      *
      * <p>Before calling the call method, additional aspects of the
      * task can be configured, for example, by calling the
      * {@linkplain #setProcessors setProcessors} method.
      */
     interface CompilationTask extends Callable<Boolean> {
         /**
          * Sets processors (for annotation processing).  This will
          * bypass the normal discovery mechanism.
          *
          * @param processors processors (for annotation processing)
          * @throws IllegalStateException if the task has started
          */
         void setProcessors(Iterable<? extends Processor> processors);
         /**
          * Set the locale to be applied when formatting diagnostics and
          * other localized data.
          *
          * @param locale the locale to apply; {@code null} means apply no
          * locale
          * @throws IllegalStateException if the task has started
          */
         void setLocale(Locale locale);
         /**
          * Performs this compilation task.  The compilation may only
          * be performed once.  Subsequent calls to this method throw
          * IllegalStateException.
          *
          * @return true if and only all the files compiled without errors;
          * false otherwise
          *
          * @throws RuntimeException if an unrecoverable error occurred
          * in a user-supplied component.  The
          * {@linkplain Throwable#getCause() cause} will be the error
          * in user code.
          * @throws IllegalStateException if called more than once
          */
         Boolean call();
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/javax/tools/JavaCompiler.java@9a66ca7c79fa (annotated)

src/share/classes/javax/tools/JavaCompiler.java