jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/main/Option.java@f6f1fd261f57 (annotated)

src/share/classes/com/sun/tools/javac/main/Option.java@f6f1fd261f57 (annotated)

src/share/classes/com/sun/tools/javac/main/Option.java

Fri, 30 Nov 2012 15:14:48 +0000

author: mcimadamore
date: Fri, 30 Nov 2012 15:14:48 +0000
changeset 1436: f6f1fd261f57
parent 1416: c0f0c41cafa0
child 1442: fcf89720ae71
permissions: -rw-r--r--

8002099: Add support for intersection types in cast expression
Summary: Add parser and type-checking support for intersection types in cast expressions
Reviewed-by: jjg

 /*
  * Copyright (c) 2006, 2012, Oracle and/or its affiliates. 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.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.tools.javac.main;
 import java.util.Collections;
 import com.sun.tools.javac.util.Log.PrefixKind;
 import com.sun.tools.javac.util.Log.WriterKind;
 import com.sun.tools.javac.util.Log;
 import com.sun.tools.javac.code.Lint;
 import com.sun.tools.javac.code.Source;
 import com.sun.tools.javac.code.Type;
 import com.sun.tools.javac.jvm.Target;
 import com.sun.tools.javac.util.Options;
 import com.sun.tools.javac.processing.JavacProcessingEnvironment;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.PrintWriter;
 import java.util.EnumSet;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Set;
 import javax.lang.model.SourceVersion;
 import static com.sun.tools.javac.main.Option.ChoiceKind.*;
 import static com.sun.tools.javac.main.Option.OptionKind.*;
 import static com.sun.tools.javac.main.Option.OptionGroup.*;
 /**
  * Options for javac. The specific Option to handle a command-line option
  * is identified by searching the members of this enum in order, looking
  * the first {@link #matches match}. The action for an Option is performed
  * by calling {@link #process process}, and by providing a suitable
  * {@link OptionHelper} to provide access the compiler state.
  *
  * <p><b>This is NOT part of any supported API.
  * If you write code that depends on this, you do so at your own
  * risk.  This code and its internal interfaces are subject to change
  * or deletion without notice.</b></p>
  */
 public enum Option {
     G("-g", "opt.g", STANDARD, BASIC),
     G_NONE("-g:none", "opt.g.none", STANDARD, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             helper.put("-g:", "none");
             return false;
         }
     },
     G_CUSTOM("-g:",  "opt.g.lines.vars.source",
             STANDARD, BASIC, ANYOF, "lines", "vars", "source"),
     XLINT("-Xlint", "opt.Xlint", EXTENDED, BASIC),
     XLINT_CUSTOM("-Xlint:", "opt.Xlint.suboptlist",
             EXTENDED,   BASIC, ANYOF, getXLintChoices()),
     // -nowarn is retained for command-line backward compatibility
     NOWARN("-nowarn", "opt.nowarn", STANDARD, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             helper.put("-Xlint:none", option);
             return false;
         }
     },
     VERBOSE("-verbose", "opt.verbose", STANDARD, BASIC),
     // -deprecation is retained for command-line backward compatibility
     DEPRECATION("-deprecation", "opt.deprecation", STANDARD, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             helper.put("-Xlint:deprecation", option);
             return false;
         }
     },
     CLASSPATH("-classpath", "opt.arg.path", "opt.classpath", STANDARD, FILEMANAGER),
     CP("-cp", "opt.arg.path", "opt.classpath", STANDARD, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             return super.process(helper, "-classpath", arg);
         }
     },
     SOURCEPATH("-sourcepath", "opt.arg.path", "opt.sourcepath", STANDARD, FILEMANAGER),
     BOOTCLASSPATH("-bootclasspath", "opt.arg.path", "opt.bootclasspath", STANDARD, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             helper.remove("-Xbootclasspath/p:");
             helper.remove("-Xbootclasspath/a:");
             return super.process(helper, option, arg);
         }
     },
     XBOOTCLASSPATH_PREPEND("-Xbootclasspath/p:", "opt.arg.path", "opt.Xbootclasspath.p", EXTENDED, FILEMANAGER),
     XBOOTCLASSPATH_APPEND("-Xbootclasspath/a:", "opt.arg.path", "opt.Xbootclasspath.a", EXTENDED, FILEMANAGER),
     XBOOTCLASSPATH("-Xbootclasspath:", "opt.arg.path", "opt.bootclasspath", EXTENDED, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             helper.remove("-Xbootclasspath/p:");
             helper.remove("-Xbootclasspath/a:");
             return super.process(helper, "-bootclasspath", arg);
         }
     },
     EXTDIRS("-extdirs", "opt.arg.dirs", "opt.extdirs", STANDARD, FILEMANAGER),
     DJAVA_EXT_DIRS("-Djava.ext.dirs=", "opt.arg.dirs", "opt.extdirs", EXTENDED, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             return super.process(helper, "-extdirs", arg);
         }
     },
     ENDORSEDDIRS("-endorseddirs", "opt.arg.dirs", "opt.endorseddirs", STANDARD, FILEMANAGER),
     DJAVA_ENDORSED_DIRS("-Djava.endorsed.dirs=", "opt.arg.dirs", "opt.endorseddirs", EXTENDED, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             return super.process(helper, "-endorseddirs", arg);
         }
     },
     PROC("-proc:", "opt.proc.none.only", STANDARD, BASIC,  ONEOF, "none", "only"),
     PROCESSOR("-processor", "opt.arg.class.list", "opt.processor", STANDARD, BASIC),
     PROCESSORPATH("-processorpath", "opt.arg.path", "opt.processorpath", STANDARD, FILEMANAGER),
     D("-d", "opt.arg.directory", "opt.d", STANDARD, FILEMANAGER),
     S("-s", "opt.arg.directory", "opt.sourceDest", STANDARD, FILEMANAGER),
     H("-h", "opt.arg.directory", "opt.headerDest", STANDARD, FILEMANAGER),
     IMPLICIT("-implicit:", "opt.implicit", STANDARD, BASIC, ONEOF, "none", "class"),
     ENCODING("-encoding", "opt.arg.encoding", "opt.encoding", STANDARD, FILEMANAGER) {
         @Override
         public boolean process(OptionHelper helper, String option, String operand) {
 //            System.err.println("process encoding " + operand);
             return super.process(helper, option, operand);
         }
     },
     SOURCE("-source", "opt.arg.release", "opt.source", STANDARD, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option, String operand) {
             Source source = Source.lookup(operand);
             if (source == null) {
                 helper.error("err.invalid.source", operand);
                 return true;
             }
             return super.process(helper, option, operand);
         }
     },
     TARGET("-target", "opt.arg.release", "opt.target", STANDARD, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option, String operand) {
             Target target = Target.lookup(operand);
             if (target == null) {
                 helper.error("err.invalid.target", operand);
                 return true;
             }
             return super.process(helper, option, operand);
         }
     },
     VERSION("-version", "opt.version", STANDARD, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             Log log = helper.getLog();
             String ownName = helper.getOwnName();
             log.printLines(PrefixKind.JAVAC, "version", ownName,  JavaCompiler.version());
             return super.process(helper, option);
         }
     },
     FULLVERSION("-fullversion", null, HIDDEN, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             Log log = helper.getLog();
             String ownName = helper.getOwnName();
             log.printLines(PrefixKind.JAVAC, "fullVersion", ownName,  JavaCompiler.fullVersion());
             return super.process(helper, option);
         }
     },
     DIAGS("-XDdiags=", null, HIDDEN, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             option = option.substring(option.indexOf('=') + 1);
             String diagsOption = option.contains("%") ?
                 "-XDdiagsFormat=" :
                 "-XDdiags=";
             diagsOption += option;
             if (XD.matches(diagsOption))
                 return XD.process(helper, diagsOption);
             else
                 return false;
         }
     },
     HELP("-help", "opt.help", STANDARD, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             Log log = helper.getLog();
             String ownName = helper.getOwnName();
             log.printLines(PrefixKind.JAVAC, "msg.usage.header", ownName);
             for (Option o: getJavaCompilerOptions()) {
                 o.help(log, OptionKind.STANDARD);
             }
             log.printNewline();
             return super.process(helper, option);
         }
     },
     A("-A", "opt.arg.key.equals.value", "opt.A", STANDARD, BASIC) {
         { hasSuffix = true; }
         @Override
         public boolean matches(String arg) {
             return arg.startsWith("-A");
         }
         @Override
         public boolean hasArg() {
             return false;
         }
         // Mapping for processor options created in
         // JavacProcessingEnvironment
         @Override
         public boolean process(OptionHelper helper, String option) {
             int argLength = option.length();
             if (argLength == 2) {
                 helper.error("err.empty.A.argument");
                 return true;
             }
             int sepIndex = option.indexOf('=');
             String key = option.substring(2, (sepIndex != -1 ? sepIndex : argLength) );
             if (!JavacProcessingEnvironment.isValidOptionName(key)) {
                 helper.error("err.invalid.A.key", option);
                 return true;
             }
             return process(helper, option, option);
         }
     },
     X("-X", "opt.X", STANDARD, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             Log log = helper.getLog();
             for (Option o: getJavaCompilerOptions()) {
                 o.help(log, OptionKind.EXTENDED);
             }
             log.printNewline();
             log.printLines(PrefixKind.JAVAC, "msg.usage.nonstandard.footer");
             return super.process(helper, option);
         }
     },
     // This option exists only for the purpose of documenting itself.
     // It's actually implemented by the launcher.
     J("-J", "opt.arg.flag", "opt.J", STANDARD, INFO) {
         { hasSuffix = true; }
         @Override
         public boolean process(OptionHelper helper, String option) {
             throw new AssertionError
                 ("the -J flag should be caught by the launcher.");
         }
     },
     // stop after parsing and attributing.
     // new HiddenOption("-attrparseonly"),
     // new Option("-moreinfo",                                      "opt.moreinfo") {
     MOREINFO("-moreinfo", null, HIDDEN, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             Type.moreInfo = true;
             return super.process(helper, option);
         }
     },
     // treat warnings as errors
     WERROR("-Werror", "opt.Werror", STANDARD, BASIC),
 //    // use complex inference from context in the position of a method call argument
 //    COMPLEXINFERENCE("-complexinference", null, HIDDEN, BASIC),
     // generare source stubs
     // new HiddenOption("-stubs"),
     // relax some constraints to allow compiling from stubs
     // new HiddenOption("-relax"),
     // output source after translating away inner classes
     // new Option("-printflat",                             "opt.printflat"),
     // new HiddenOption("-printflat"),
     // display scope search details
     // new Option("-printsearch",                           "opt.printsearch"),
     // new HiddenOption("-printsearch"),
     // prompt after each error
     // new Option("-prompt",                                        "opt.prompt"),
     PROMPT("-prompt", null, HIDDEN, BASIC),
     // dump stack on error
     DOE("-doe", null, HIDDEN, BASIC),
     // output source after type erasure
     // new Option("-s",                                     "opt.s"),
     PRINTSOURCE("-printsource", null, HIDDEN, BASIC),
     // output shrouded class files
     // new Option("-scramble",                              "opt.scramble"),
     // new Option("-scrambleall",                           "opt.scrambleall"),
     // display warnings for generic unchecked operations
     WARNUNCHECKED("-warnunchecked", null, HIDDEN, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             helper.put("-Xlint:unchecked", option);
             return false;
         }
     },
     XMAXERRS("-Xmaxerrs", "opt.arg.number", "opt.maxerrs", EXTENDED, BASIC),
     XMAXWARNS("-Xmaxwarns", "opt.arg.number", "opt.maxwarns", EXTENDED, BASIC),
     XSTDOUT("-Xstdout", "opt.arg.file", "opt.Xstdout", EXTENDED, INFO) {
         @Override
         public boolean process(OptionHelper helper, String option, String arg) {
             try {
                 Log log = helper.getLog();
                 // TODO: this file should be closed at the end of compilation
                 log.setWriters(new PrintWriter(new FileWriter(arg), true));
             } catch (java.io.IOException e) {
                 helper.error("err.error.writing.file", arg, e);
                 return true;
             }
             return super.process(helper, option, arg);
         }
     },
     XPRINT("-Xprint", "opt.print", EXTENDED, BASIC),
     XPRINTROUNDS("-XprintRounds", "opt.printRounds", EXTENDED, BASIC),
     XPRINTPROCESSORINFO("-XprintProcessorInfo", "opt.printProcessorInfo", EXTENDED, BASIC),
     XPREFER("-Xprefer:", "opt.prefer", EXTENDED, BASIC, ONEOF, "source", "newer"),
     XPKGINFO("-Xpkginfo:", "opt.pkginfo", EXTENDED, BASIC, ONEOF, "always", "legacy", "nonempty"),
     /* -O is a no-op, accepted for backward compatibility. */
     O("-O", null, HIDDEN, BASIC),
     /* -Xjcov produces tables to support the code coverage tool jcov. */
     XJCOV("-Xjcov", null, HIDDEN, BASIC),
     PLUGIN("-Xplugin:", "opt.arg.plugin", "opt.plugin", EXTENDED, BASIC) {
         @Override
         public boolean process(OptionHelper helper, String option) {
             String p = option.substring(option.indexOf(':') + 1);
             String prev = helper.get(PLUGIN);
             helper.put(PLUGIN.text, (prev == null) ? p : prev + '\0' + p.trim());
             return false;
         }
     },
     /* This is a back door to the compiler's option table.
      * -XDx=y sets the option x to the value y.
      * -XDx sets the option x to the value x.
      */
     XD("-XD", null, HIDDEN, BASIC) {
         String s;
         @Override
         public boolean matches(String s) {
             this.s = s;
             return s.startsWith(text);
         }
         @Override
         public boolean process(OptionHelper helper, String option) {
             s = s.substring(text.length());
             int eq = s.indexOf('=');
             String key = (eq < 0) ? s : s.substring(0, eq);
             String value = (eq < 0) ? s : s.substring(eq+1);
             helper.put(key, value);
             return false;
         }
     },
     // This option exists only for the purpose of documenting itself.
     // It's actually implemented by the CommandLine class.
     AT("@", "opt.arg.file", "opt.AT", STANDARD, INFO) {
         { hasSuffix = true; }
         @Override
         public boolean process(OptionHelper helper, String option) {
             throw new AssertionError("the @ flag should be caught by CommandLine.");
         }
     },
     /*
      * TODO: With apt, the matches method accepts anything if
      * -XclassAsDecls is used; code elsewhere does the lookup to
      * see if the class name is both legal and found.
      *
      * In apt, the process method adds the candidate class file
      * name to a separate list.
      */
     SOURCEFILE("sourcefile", null, HIDDEN, INFO) {
         String s;
         @Override
         public boolean matches(String s) {
             this.s = s;
             return s.endsWith(".java")  // Java source file
                 || SourceVersion.isName(s);   // Legal type name
         }
         @Override
         public boolean process(OptionHelper helper, String option) {
             if (s.endsWith(".java") ) {
                 File f = new File(s);
                 if (!f.exists()) {
                     helper.error("err.file.not.found", f);
                     return true;
                 }
                 if (!f.isFile()) {
                     helper.error("err.file.not.file", f);
                     return true;
                 }
                 helper.addFile(f);
             }
             else
                 helper.addClassName(s);
             return false;
         }
     };
     /** The kind of an Option. This is used by the -help and -X options. */
     public enum OptionKind {
         /** A standard option, documented by -help. */
         STANDARD,
         /** An extended option, documented by -X. */
         EXTENDED,
         /** A hidden option, not documented. */
         HIDDEN,
     }
     /** The group for an Option. This determines the situations in which the
      *  option is applicable. */
     enum OptionGroup {
         /** A basic option, available for use on the command line or via the
          *  Compiler API. */
         BASIC,
         /** An option for javac's standard JavaFileManager. Other file managers
          *  may or may not support these options. */
         FILEMANAGER,
         /** A command-line option that requests information, such as -help. */
         INFO,
         /** A command-line "option" representing a file or class name. */
         OPERAND
     }
     /** The kind of choice for "choice" options. */
     enum ChoiceKind {
         /** The expected value is exactly one of the set of choices. */
         ONEOF,
         /** The expected value is one of more of the set of choices. */
         ANYOF
     }
     public final String text;
     final OptionKind kind;
     final OptionGroup group;
     /** Documentation key for arguments.
      */
     final String argsNameKey;
     /** Documentation key for description.
      */
     final String descrKey;
     /** Suffix option (-foo=bar or -foo:bar)
      */
     boolean hasSuffix;
     /** The kind of choices for this option, if any.
      */
     final ChoiceKind choiceKind;
     /** The choices for this option, if any, and whether or not the choices
      *  are hidden
      */
     final Map<String,Boolean> choices;
     Option(String text, String descrKey,
             OptionKind kind, OptionGroup group) {
         this(text, null, descrKey, kind, group, null, null);
     }
     Option(String text, String argsNameKey, String descrKey,
             OptionKind kind, OptionGroup group) {
         this(text, argsNameKey, descrKey, kind, group, null, null);
     }
     Option(String text, String descrKey,
             OptionKind kind, OptionGroup group,
             ChoiceKind choiceKind, Map<String,Boolean> choices) {
         this(text, null, descrKey, kind, group, choiceKind, choices);
     }
     Option(String text, String descrKey,
             OptionKind kind, OptionGroup group,
             ChoiceKind choiceKind, String... choices) {
         this(text, null, descrKey, kind, group, choiceKind, createChoices(choices));
     }
     // where
         private static Map<String,Boolean> createChoices(String... choices) {
             Map<String,Boolean> map = new LinkedHashMap<String,Boolean>();
             for (String c: choices)
                 map.put(c, false);
             return map;
         }
     private Option(String text, String argsNameKey, String descrKey,
             OptionKind kind, OptionGroup group,
             ChoiceKind choiceKind, Map<String,Boolean> choices) {
         this.text = text;
         this.argsNameKey = argsNameKey;
         this.descrKey = descrKey;
         this.kind = kind;
         this.group = group;
         this.choiceKind = choiceKind;
         this.choices = choices;
         char lastChar = text.charAt(text.length()-1);
         hasSuffix = lastChar == ':' || lastChar == '=';
     }
     public String getText() {
         return text;
     }
     public OptionKind getKind() {
         return kind;
     }
     public boolean hasArg() {
         return argsNameKey != null && !hasSuffix;
     }
     public boolean matches(String option) {
         if (!hasSuffix)
             return option.equals(text);
         if (!option.startsWith(text))
             return false;
         if (choices != null) {
             String arg = option.substring(text.length());
             if (choiceKind == ChoiceKind.ONEOF)
                 return choices.keySet().contains(arg);
             else {
                 for (String a: arg.split(",+")) {
                     if (!choices.keySet().contains(a))
                         return false;
                 }
             }
         }
         return true;
     }
     public boolean process(OptionHelper helper, String option, String arg) {
         if (choices != null) {
             if (choiceKind == ChoiceKind.ONEOF) {
                 // some clients like to see just one of option+choice set
                 for (String s: choices.keySet())
                     helper.remove(option + s);
                 String opt = option + arg;
                 helper.put(opt, opt);
                 // some clients like to see option (without trailing ":")
                 // set to arg
                 String nm = option.substring(0, option.length() - 1);
                 helper.put(nm, arg);
             } else {
                 // set option+word for each word in arg
                 for (String a: arg.split(",+")) {
                     String opt = option + a;
                     helper.put(opt, opt);
                 }
             }
         }
         helper.put(option, arg);
         return false;
     }
     public boolean process(OptionHelper helper, String option) {
         if (hasSuffix)
             return process(helper, text, option.substring(text.length()));
         else
             return process(helper, option, option);
     }
     void help(Log log, OptionKind kind) {
         if (this.kind != kind)
             return;
         log.printRawLines(WriterKind.NOTICE,
                 String.format("  %-26s %s",
                     helpSynopsis(log),
                     log.localize(PrefixKind.JAVAC, descrKey)));
     }
     private String helpSynopsis(Log log) {
         StringBuilder sb = new StringBuilder();
         sb.append(text);
         if (argsNameKey == null) {
             if (choices != null) {
                 String sep = "{";
                 for (Map.Entry<String,Boolean> e: choices.entrySet()) {
                     if (!e.getValue()) {
                         sb.append(sep);
                         sb.append(e.getKey());
                         sep = ",";
                     }
                 }
                 sb.append("}");
             }
         } else {
             if (!hasSuffix)
                 sb.append(" ");
             sb.append(log.localize(PrefixKind.JAVAC, argsNameKey));
         }
         return sb.toString();
     }
     // For -XpkgInfo:value
     public enum PkgInfo {
         ALWAYS, LEGACY, NONEMPTY;
         public static PkgInfo get(Options options) {
             String v = options.get(XPKGINFO);
             return (v == null
                     ? PkgInfo.LEGACY
                     : PkgInfo.valueOf(v.toUpperCase()));
         }
     }
     private static Map<String,Boolean> getXLintChoices() {
         Map<String,Boolean> choices = new LinkedHashMap<String,Boolean>();
         choices.put("all", false);
         for (Lint.LintCategory c : Lint.LintCategory.values())
             choices.put(c.option, c.hidden);
         for (Lint.LintCategory c : Lint.LintCategory.values())
             choices.put("-" + c.option, c.hidden);
         choices.put("none", false);
         return choices;
     }
     static Set<Option> getJavaCompilerOptions() {
         return EnumSet.allOf(Option.class);
     }
     public static Set<Option> getJavacFileManagerOptions() {
         return getOptions(EnumSet.of(FILEMANAGER));
     }
     public static Set<Option> getJavacToolOptions() {
         return getOptions(EnumSet.of(BASIC));
     }
     static Set<Option> getOptions(Set<OptionGroup> desired) {
         Set<Option> options = EnumSet.noneOf(Option.class);
         for (Option option : Option.values())
             if (desired.contains(option.group))
                 options.add(option);
         return Collections.unmodifiableSet(options);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javac/main/Option.java@f6f1fd261f57 (annotated)

src/share/classes/com/sun/tools/javac/main/Option.java