Source Code Cross Referenced for Main.java in  » 6.0-JDK-Modules-sun » javac-compiler » com » sun » tools » javac » main » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules sun » javac compiler » com.sun.tools.javac.main 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 1999-2006 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:
026:        package com.sun.tools.javac.main;
027:
028:        import com.sun.tools.javac.util.Options;
029:        import java.io.File;
030:        import java.io.IOException;
031:        import java.io.PrintWriter;
032:        import java.util.MissingResourceException;
033:
034:        import com.sun.tools.javac.code.Source;
035:        import com.sun.tools.javac.jvm.Target;
036:        import com.sun.tools.javac.main.JavacOption.Option;
037:        import com.sun.tools.javac.main.RecognizedOptions.OptionHelper;
038:        import com.sun.tools.javac.util.*;
039:        import com.sun.tools.javac.processing.AnnotationProcessingError;
040:        import javax.tools.JavaFileManager;
041:        import javax.tools.JavaFileObject;
042:        import javax.annotation.processing.Processor;
043:
044:        /** This class provides a commandline interface to the GJC compiler.
045:         *
046:         *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
047:         *  you write code that depends on this, you do so at your own risk.
048:         *  This code and its internal interfaces are subject to change or
049:         *  deletion without notice.</b>
050:         */
051:        @Version("@(#)Main.java	1.119 07/05/05")
052:        public class Main {
053:
054:            /** The name of the compiler, for use in diagnostics.
055:             */
056:            String ownName;
057:
058:            /** The writer to use for diagnostic output.
059:             */
060:            PrintWriter out;
061:
062:            /**
063:             * If true, any command line arg errors will cause an exception.
064:             */
065:            boolean fatalErrors;
066:
067:            /** Result codes.
068:             */
069:            static final int EXIT_OK = 0, // Compilation completed with no errors.
070:                    EXIT_ERROR = 1, // Completed but reported errors.
071:                    EXIT_CMDERR = 2, // Bad command-line arguments
072:                    EXIT_SYSERR = 3, // System error or resource exhaustion.
073:                    EXIT_ABNORMAL = 4; // Compiler terminated abnormally
074:
075:            private Option[] recognizedOptions = RecognizedOptions
076:                    .getJavaCompilerOptions(new OptionHelper() {
077:
078:                        public void setOut(PrintWriter out) {
079:                            Main.this .out = out;
080:                        }
081:
082:                        public void error(String key, Object... args) {
083:                            Main.this .error(key, args);
084:                        }
085:
086:                        public void printVersion() {
087:                            Log.printLines(out, getLocalizedString("version",
088:                                    ownName, JavaCompiler.version()));
089:                        }
090:
091:                        public void printFullVersion() {
092:                            Log.printLines(out, getLocalizedString(
093:                                    "fullVersion", ownName, JavaCompiler
094:                                            .fullVersion()));
095:                        }
096:
097:                        public void printHelp() {
098:                            help();
099:                        }
100:
101:                        public void printXhelp() {
102:                            xhelp();
103:                        }
104:
105:                        public void addFile(File f) {
106:                            if (!filenames.contains(f))
107:                                filenames.append(f);
108:                        }
109:
110:                        public void addClassName(String s) {
111:                            classnames.append(s);
112:                        }
113:
114:                    });
115:
116:            /**
117:             * Construct a compiler instance.
118:             */
119:            public Main(String name) {
120:                this (name, new PrintWriter(System.err, true));
121:            }
122:
123:            /**
124:             * Construct a compiler instance.
125:             */
126:            public Main(String name, PrintWriter out) {
127:                this .ownName = name;
128:                this .out = out;
129:            }
130:
131:            /** A table of all options that's passed to the JavaCompiler constructor.  */
132:            private Options options = null;
133:
134:            /** The list of source files to process
135:             */
136:            public ListBuffer<File> filenames = null; // XXX sb protected
137:
138:            /** List of class files names passed on the command line
139:             */
140:            public ListBuffer<String> classnames = null; // XXX sb protected
141:
142:            /** Print a string that explains usage.
143:             */
144:            void help() {
145:                Log.printLines(out, getLocalizedString("msg.usage.header",
146:                        ownName));
147:                for (int i = 0; i < recognizedOptions.length; i++) {
148:                    recognizedOptions[i].help(out);
149:                }
150:                out.println();
151:            }
152:
153:            /** Print a string that explains usage for X options.
154:             */
155:            void xhelp() {
156:                for (int i = 0; i < recognizedOptions.length; i++) {
157:                    recognizedOptions[i].xhelp(out);
158:                }
159:                out.println();
160:                Log.printLines(out,
161:                        getLocalizedString("msg.usage.nonstandard.footer"));
162:            }
163:
164:            /** Report a usage error.
165:             */
166:            void error(String key, Object... args) {
167:                if (fatalErrors) {
168:                    String msg = getLocalizedString(key, args);
169:                    throw new PropagatedException(
170:                            new IllegalStateException(msg));
171:                }
172:                warning(key, args);
173:                Log.printLines(out, getLocalizedString("msg.usage", ownName));
174:            }
175:
176:            /** Report a warning.
177:             */
178:            void warning(String key, Object... args) {
179:                Log.printLines(out, ownName + ": "
180:                        + getLocalizedString(key, args));
181:            }
182:
183:            public Option getOption(String flag) {
184:                for (Option option : recognizedOptions) {
185:                    if (option.matches(flag))
186:                        return option;
187:                }
188:                return null;
189:            }
190:
191:            public void setOptions(Options options) {
192:                if (options == null)
193:                    throw new NullPointerException();
194:                this .options = options;
195:            }
196:
197:            public void setFatalErrors(boolean fatalErrors) {
198:                this .fatalErrors = fatalErrors;
199:            }
200:
201:            /** Process command line arguments: store all command line options
202:             *  in `options' table and return all source filenames.
203:             *  @param flags    The array of command line arguments.
204:             */
205:            public List<File> processArgs(String[] flags) { // XXX sb protected
206:                int ac = 0;
207:                while (ac < flags.length) {
208:                    String flag = flags[ac];
209:                    ac++;
210:
211:                    int j;
212:                    // quick hack to speed up file processing: 
213:                    // if the option does not begin with '-', there is no need to check
214:                    // most of the compiler options.
215:                    int firstOptionToCheck = flag.charAt(0) == '-' ? 0
216:                            : recognizedOptions.length - 1;
217:                    for (j = firstOptionToCheck; j < recognizedOptions.length; j++)
218:                        if (recognizedOptions[j].matches(flag))
219:                            break;
220:
221:                    if (j == recognizedOptions.length) {
222:                        error("err.invalid.flag", flag);
223:                        return null;
224:                    }
225:
226:                    Option option = recognizedOptions[j];
227:                    if (option.hasArg()) {
228:                        if (ac == flags.length) {
229:                            error("err.req.arg", flag);
230:                            return null;
231:                        }
232:                        String operand = flags[ac];
233:                        ac++;
234:                        if (option.process(options, flag, operand))
235:                            return null;
236:                    } else {
237:                        if (option.process(options, flag))
238:                            return null;
239:                    }
240:                }
241:
242:                if (!checkDirectory("-d"))
243:                    return null;
244:                if (!checkDirectory("-s"))
245:                    return null;
246:
247:                String sourceString = options.get("-source");
248:                Source source = (sourceString != null) ? Source
249:                        .lookup(sourceString) : Source.DEFAULT;
250:                String targetString = options.get("-target");
251:                Target target = (targetString != null) ? Target
252:                        .lookup(targetString) : Target.DEFAULT;
253:                // We don't check source/target consistency for CLDC, as J2ME
254:                // profiles are not aligned with J2SE targets; moreover, a
255:                // single CLDC target may have many profiles.  In addition,
256:                // this is needed for the continued functioning of the JSR14
257:                // prototype.
258:                if (Character.isDigit(target.name.charAt(0))) {
259:                    if (target.compareTo(source.requiredTarget()) < 0) {
260:                        if (targetString != null) {
261:                            if (sourceString == null) {
262:                                warning("warn.target.default.source.conflict",
263:                                        targetString,
264:                                        source.requiredTarget().name);
265:                            } else {
266:                                warning("warn.source.target.conflict",
267:                                        sourceString,
268:                                        source.requiredTarget().name);
269:                            }
270:                            return null;
271:                        } else {
272:                            options
273:                                    .put("-target",
274:                                            source.requiredTarget().name);
275:                        }
276:                    } else {
277:                        if (targetString == null && !source.allowGenerics()) {
278:                            options.put("-target", Target.JDK1_4.name);
279:                        }
280:                    }
281:                }
282:                return filenames.toList();
283:            }
284:
285:            // where
286:            private boolean checkDirectory(String optName) {
287:                String value = options.get(optName);
288:                if (value == null)
289:                    return true;
290:                File file = new File(value);
291:                if (!file.exists()) {
292:                    error("err.dir.not.found", value);
293:                    return false;
294:                }
295:                if (!file.isDirectory()) {
296:                    error("err.file.not.directory", value);
297:                    return false;
298:                }
299:                return true;
300:            }
301:
302:            /** Programmatic interface for main function.
303:             * @param args    The command line parameters.
304:             */
305:            public int compile(String[] args) {
306:                Context context = new Context();
307:                JavacFileManager.preRegister(context); // can't create it until Log has been set up
308:                int result = compile(args, context);
309:                if (fileManager instanceof  JavacFileManager) {
310:                    // A fresh context was created above, so jfm must be a JavacFileManager
311:                    ((JavacFileManager) fileManager).close();
312:                }
313:                return result;
314:            }
315:
316:            public int compile(String[] args, Context context) {
317:                return compile(args, context, List.<JavaFileObject> nil(), null);
318:            }
319:
320:            /** Programmatic interface for main function.
321:             * @param args    The command line parameters.
322:             */
323:            public int compile(String[] args, Context context,
324:                    List<JavaFileObject> fileObjects,
325:                    Iterable<? extends Processor> processors) {
326:                if (options == null)
327:                    options = Options.instance(context); // creates a new one
328:
329:                filenames = new ListBuffer<File>();
330:                classnames = new ListBuffer<String>();
331:                JavaCompiler comp = null;
332:                /*
333:                 * TODO: Logic below about what is an acceptable command line
334:                 * should be updated to take annotation processing semantics
335:                 * into account.
336:                 */
337:                try {
338:                    if (args.length == 0 && fileObjects.isEmpty()) {
339:                        help();
340:                        return EXIT_CMDERR;
341:                    }
342:
343:                    List<File> filenames;
344:                    try {
345:                        filenames = processArgs(CommandLine.parse(args));
346:                        if (filenames == null) {
347:                            // null signals an error in options, abort
348:                            return EXIT_CMDERR;
349:                        } else if (filenames.isEmpty() && fileObjects.isEmpty()
350:                                && classnames.isEmpty()) {
351:                            // it is allowed to compile nothing if just asking for help or version info
352:                            if (options.get("-help") != null
353:                                    || options.get("-X") != null
354:                                    || options.get("-version") != null
355:                                    || options.get("-fullversion") != null)
356:                                return EXIT_OK;
357:                            error("err.no.source.files");
358:                            return EXIT_CMDERR;
359:                        }
360:                    } catch (java.io.FileNotFoundException e) {
361:                        Log.printLines(out, ownName
362:                                + ": "
363:                                + getLocalizedString("err.file.not.found", e
364:                                        .getMessage()));
365:                        return EXIT_SYSERR;
366:                    }
367:
368:                    boolean forceStdOut = options.get("stdout") != null;
369:                    if (forceStdOut) {
370:                        out.flush();
371:                        out = new PrintWriter(System.out, true);
372:                    }
373:
374:                    context.put(Log.outKey, out);
375:
376:                    fileManager = context.get(JavaFileManager.class);
377:
378:                    comp = JavaCompiler.instance(context);
379:                    if (comp == null)
380:                        return EXIT_SYSERR;
381:
382:                    if (!filenames.isEmpty()) {
383:                        // add filenames to fileObjects
384:                        comp = JavaCompiler.instance(context);
385:                        List<JavaFileObject> otherFiles = List.nil();
386:                        JavacFileManager dfm = (JavacFileManager) fileManager;
387:                        for (JavaFileObject fo : dfm
388:                                .getJavaFileObjectsFromFiles(filenames))
389:                            otherFiles = otherFiles.prepend(fo);
390:                        for (JavaFileObject fo : otherFiles)
391:                            fileObjects = fileObjects.prepend(fo);
392:                    }
393:                    comp.compile(fileObjects, classnames.toList(), processors);
394:
395:                    if (comp.errorCount() != 0
396:                            || options.get("-Werror") != null
397:                            && comp.warningCount() != 0)
398:                        return EXIT_ERROR;
399:                } catch (IOException ex) {
400:                    ioMessage(ex);
401:                    return EXIT_SYSERR;
402:                } catch (OutOfMemoryError ex) {
403:                    resourceMessage(ex);
404:                    return EXIT_SYSERR;
405:                } catch (StackOverflowError ex) {
406:                    resourceMessage(ex);
407:                    return EXIT_SYSERR;
408:                } catch (FatalError ex) {
409:                    feMessage(ex);
410:                    return EXIT_SYSERR;
411:                } catch (AnnotationProcessingError ex) {
412:                    apMessage(ex);
413:                    return EXIT_SYSERR;
414:                } catch (ClientCodeException ex) {
415:                    // as specified by javax.tools.JavaCompiler#getTask
416:                    // and javax.tools.JavaCompiler.CompilationTask#call
417:                    throw new RuntimeException(ex.getCause());
418:                } catch (PropagatedException ex) {
419:                    throw ex.getCause();
420:                } catch (Throwable ex) {
421:                    // Nasty.  If we've already reported an error, compensate
422:                    // for buggy compiler error recovery by swallowing thrown
423:                    // exceptions.
424:                    if (comp == null || comp.errorCount() == 0
425:                            || options == null || options.get("dev") != null)
426:                        bugMessage(ex);
427:                    return EXIT_ABNORMAL;
428:                } finally {
429:                    if (comp != null)
430:                        comp.close();
431:                    filenames = null;
432:                    options = null;
433:                }
434:                return EXIT_OK;
435:            }
436:
437:            /** Print a message reporting an internal error.
438:             */
439:            void bugMessage(Throwable ex) {
440:                Log.printLines(out, getLocalizedString("msg.bug", JavaCompiler
441:                        .version()));
442:                ex.printStackTrace(out);
443:            }
444:
445:            /** Print a message reporting an fatal error.
446:             */
447:            void feMessage(Throwable ex) {
448:                Log.printLines(out, ex.getMessage());
449:            }
450:
451:            /** Print a message reporting an input/output error.
452:             */
453:            void ioMessage(Throwable ex) {
454:                Log.printLines(out, getLocalizedString("msg.io"));
455:                ex.printStackTrace(out);
456:            }
457:
458:            /** Print a message reporting an out-of-resources error.
459:             */
460:            void resourceMessage(Throwable ex) {
461:                Log.printLines(out, getLocalizedString("msg.resource"));
462:                //      System.out.println("(name buffer len = " + Name.names.length + " " + Name.nc);//DEBUG
463:                ex.printStackTrace(out);
464:            }
465:
466:            /** Print a message reporting an uncaught exception from an
467:             * annotation processor.
468:             */
469:            void apMessage(AnnotationProcessingError ex) {
470:                Log
471:                        .printLines(
472:                                out,
473:                                getLocalizedString("msg.proc.annotation.uncaught.exception"));
474:                ex.getCause().printStackTrace();
475:            }
476:
477:            private JavaFileManager fileManager;
478:
479:            /* ************************************************************************
480:             * Internationalization
481:             *************************************************************************/
482:
483:            /** Find a localized string in the resource bundle.
484:             *  @param key     The key for the localized string.
485:             */
486:            public static String getLocalizedString(String key, Object... args) { // FIXME sb private
487:                try {
488:                    if (messages == null)
489:                        messages = new Messages(javacBundleName);
490:                    return messages.getLocalizedString("javac." + key, args);
491:                } catch (MissingResourceException e) {
492:                    throw new Error(
493:                            "Fatal Error: Resource for javac is missing", e);
494:                }
495:            }
496:
497:            public static void useRawMessages(boolean enable) {
498:                if (enable) {
499:                    messages = new Messages(javacBundleName) {
500:                        public String getLocalizedString(String key,
501:                                Object... args) {
502:                            return key;
503:                        }
504:                    };
505:                } else {
506:                    messages = new Messages(javacBundleName);
507:                }
508:            }
509:
510:            private static final String javacBundleName = "com.sun.tools.javac.resources.javac";
511:
512:            private static Messages messages;
513:        }
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