/*
* Copyright (c) 2006, 2008, 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.io.PrintWriter;
import java.util.LinkedHashMap;
import java.util.Map;
import com.sun.tools.javac.util.Log;
import com.sun.tools.javac.util.Options;
/**
* TODO: describe com.sun.tools.javac.main.JavacOption
*
* <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 interface JavacOption {
OptionKind getKind();
/** Does this option take a (separate) operand?
* @return true if this option takes a separate operand
*/
boolean hasArg();
/** Does argument string match option pattern?
* @param arg the command line argument string
* @return true if {@code arg} matches this option
*/
boolean matches(String arg);
/** Process an option with an argument.
* @param options the accumulated set of analyzed options
* @param option the option to be processed
* @param arg the arg for the option to be processed
* @return true if an error was detected
*/
boolean process(Options options, String option, String arg);
/** Process the option with no argument.
* @param options the accumulated set of analyzed options
* @param option the option to be processed
* @return true if an error was detected
*/
boolean process(Options options, String option);
OptionName getName();
enum OptionKind {
NORMAL,
EXTENDED,
HIDDEN,
}
enum ChoiceKind {
ONEOF,
ANYOF
}
/** This class represents an option recognized by the main program
*/
static class Option implements JavacOption {
/** Option string.
*/
OptionName name;
/** Documentation key for arguments.
*/
String argsNameKey;
/** Documentation key for description.
*/
String descrKey;
/** Suffix option (-foo=bar or -foo:bar)
*/
boolean hasSuffix;
/** The kind of choices for this option, if any.
*/
ChoiceKind choiceKind;
/** The choices for this option, if any, and whether or not the choices
* are hidden
*/
Map<String,Boolean> choices;
Option(OptionName name, String argsNameKey, String descrKey) {
this.name = name;
this.argsNameKey = argsNameKey;
this.descrKey = descrKey;
char lastChar = name.optionName.charAt(name.optionName.length()-1);
hasSuffix = lastChar == ':' || lastChar == '=';
}
Option(OptionName name, String descrKey) {
this(name, null, descrKey);
}
Option(OptionName name, String descrKey, ChoiceKind choiceKind, String... choices) {
this(name, descrKey, choiceKind, createChoices(choices));
}
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;
}
Option(OptionName name, String descrKey, ChoiceKind choiceKind,
Map<String,Boolean> choices) {
this(name, null, descrKey);
if (choiceKind == null || choices == null)
throw new NullPointerException();
this.choiceKind = choiceKind;
this.choices = choices;
}
@Override
public String toString() {
return name.optionName;
}
public boolean hasArg() {
return argsNameKey != null && !hasSuffix;
}
public boolean matches(String option) {
if (!hasSuffix)
return option.equals(name.optionName);
if (!option.startsWith(name.optionName))
return false;
if (choices != null) {
String arg = option.substring(name.optionName.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;
}
/** Print a line of documentation describing this option, if standard.
* @param out the stream to which to write the documentation
*/
void help(PrintWriter out) {
String s = " " + helpSynopsis();
out.print(s);
for (int j = Math.min(s.length(), 28); j < 29; j++) out.print(" ");
Log.printLines(out, Main.getLocalizedString(descrKey));
}
String helpSynopsis() {
StringBuilder sb = new StringBuilder();
sb.append(name);
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(Main.getLocalizedString(argsNameKey));
}
return sb.toString();
}
/** Print a line of documentation describing this option, if non-standard.
* @param out the stream to which to write the documentation
*/
void xhelp(PrintWriter out) {}
/** Process the option (with arg). Return true if error detected.
*/
public boolean process(Options options, String option, String arg) {
if (options != null) {
if (choices != null) {
if (choiceKind == ChoiceKind.ONEOF) {
// some clients like to see just one of option+choice set
for (String s: choices.keySet())
options.remove(option + s);
String opt = option + arg;
options.put(opt, opt);
// some clients like to see option (without trailing ":")
// set to arg
String nm = option.substring(0, option.length() - 1);
options.put(nm, arg);
} else {
// set option+word for each word in arg
for (String a: arg.split(",+")) {
String opt = option + a;
options.put(opt, opt);
}
}
}
options.put(option, arg);
}
return false;
}
/** Process the option (without arg). Return true if error detected.
*/
public boolean process(Options options, String option) {
if (hasSuffix)
return process(options, name.optionName, option.substring(name.optionName.length()));
else
return process(options, option, option);
}
public OptionKind getKind() { return OptionKind.NORMAL; }
public OptionName getName() { return name; }
};
/** A nonstandard or extended (-X) option
*/
static class XOption extends Option {
XOption(OptionName name, String argsNameKey, String descrKey) {
super(name, argsNameKey, descrKey);
}
XOption(OptionName name, String descrKey) {
this(name, null, descrKey);
}
XOption(OptionName name, String descrKey, ChoiceKind kind, String... choices) {
super(name, descrKey, kind, choices);
}
XOption(OptionName name, String descrKey, ChoiceKind kind, Map<String,Boolean> choices) {
super(name, descrKey, kind, choices);
}
@Override
void help(PrintWriter out) {}
@Override
void xhelp(PrintWriter out) { super.help(out); }
@Override
public OptionKind getKind() { return OptionKind.EXTENDED; }
};
/** A hidden (implementor) option
*/
static class HiddenOption extends Option {
HiddenOption(OptionName name) {
super(name, null, null);
}
HiddenOption(OptionName name, String argsNameKey) {
super(name, argsNameKey, null);
}
@Override
void help(PrintWriter out) {}
@Override
void xhelp(PrintWriter out) {}
@Override
public OptionKind getKind() { return OptionKind.HIDDEN; }
};
}