Mercurial > hg > truffle
view graal/com.oracle.max.base/src/com/sun/max/program/option/OptionTypes.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
parents | |
children | bc8527f3071c |
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/* * Copyright (c) 2007, 2011, 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. * * 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.max.program.option; import java.io.*; import java.net.*; import java.text.*; import java.util.*; import com.sun.max.*; import com.sun.max.program.*; import com.sun.max.program.option.Option.Error; public class OptionTypes { protected static class LongType extends Option.Type<Long> { protected LongType() { super(Long.class, "long"); } @Override public Long parseValue(String string) { if (string.length() == 0) { return 0L; } try { if (string.startsWith("0x")) { return Long.valueOf(string.substring(2), 16); } else if (string.startsWith("-0x")) { return -Long.valueOf(string.substring(3), 16); } return Long.valueOf(string); } catch (NumberFormatException e) { throw new Option.Error("invalid long value: " + string); } } @Override public String getValueFormat() { return "<long>"; } } protected static class ScaledLongType extends LongType { protected ScaledLongType() { super(); } @Override public Long parseValue(String string) { final char last = string.charAt(string.length() - 1); String s = string; int multiplier = 1; if (last == 'k' || last == 'K') { multiplier = 1024; s = s.substring(0, s.length() - 1); } else if (last == 'm' || last == 'M') { multiplier = 1024 * 1024; s = s.substring(0, s.length() - 1); } else if (last == 'g' || last == 'G') { multiplier = 1024 * 1024 * 1024; s = s.substring(0, s.length() - 1); } final long value = super.parseValue(s); if (value > Long.MAX_VALUE / multiplier || value < Long.MIN_VALUE / multiplier) { throw new Option.Error("invalid long value: " + s); } return value * multiplier; } } public static class ConfigFile extends Option.Type<File> { protected final OptionSet optionSet; public ConfigFile(OptionSet set) { super(File.class, "file"); optionSet = set; } @Override public File parseValue(String string) { if (string != null) { final File f = new File(string); if (!f.exists()) { throw new Option.Error("configuration file does not exist: " + string); } try { optionSet.loadFile(string, true); } catch (IOException e) { throw new Option.Error("error loading config from " + string + ": " + e.getMessage()); } } return null; } @Override public String getValueFormat() { return "<file>"; } } public static class ListType<T> extends Option.Type<List<T>> { protected final char separator; public final Option.Type<T> elementOptionType; private static <T> Class<List<T>> listClass(Class<T> valueClass) { final Class<Class<List<T>>> type = null; return Utils.cast(type, List.class); } public ListType(char separator, Option.Type<T> elementOptionType) { super(listClass(elementOptionType.type), "list"); this.separator = separator; this.elementOptionType = elementOptionType; } @Override public String unparseValue(List<T> value) { final StringBuilder buffer = new StringBuilder(); boolean previous = false; for (Object object : value) { if (previous) { buffer.append(separator); } previous = true; buffer.append(object.toString()); } return buffer.toString(); } @Override public List<T> parseValue(String val) { final List<T> list = new LinkedList<T>(); if (val.isEmpty()) { return list; } final CharacterIterator i = new StringCharacterIterator(val); StringBuilder buffer = new StringBuilder(32); while (i.current() != CharacterIterator.DONE) { if (i.current() == separator) { list.add(elementOptionType.parseValue(buffer.toString().trim())); buffer = new StringBuilder(32); } else { buffer.append(i.current()); } i.next(); } list.add(elementOptionType.parseValue(buffer.toString().trim())); return list; } @Override public String getValueFormat() { return "[<arg>{" + separator + "<arg>}*]"; } } public static class EnumType<T extends Enum<T>> extends Option.Type<T> { public final T[] values; public EnumType(Class<T> enumClass) { super(enumClass, enumClass.getName()); values = enumClass.getEnumConstants(); } @Override public T parseValue(String string) { if (string == null) { return null; } for (T value : values) { if (value.name().equalsIgnoreCase(string)) { return value; } } throw new Option.Error("invalid " + typeName); } @Override public String getValueFormat() { return Utils.toString(values, "|"); } } public static final Option.Type<Long> LONG_TYPE = new LongType(); public static final Option.Type<Long> SCALED_LONG_TYPE = new ScaledLongType(); public static final Option.Type<String> STRING_TYPE = new Option.Type<String>(String.class, "string") { @Override public String parseValue(String string) { return string; } @Override public String getValueFormat() { return "<arg>"; } }; /** * * @return An option type that takes a class name as its value. It reflectively creates an instance * of the specified class. If the class is not found, it tries to prefix the class name with "com.sum.max.". */ public static final <T> Option.Type<T> createInstanceOptionType(final Class<T> klass) { return new Option.Type<T>(klass, "instance") { @Override public String getValueFormat() { return "<class>"; } @Override public T parseValue(String string) throws Error { try { try { return Utils.cast(klass, Class.forName(string).newInstance()); } catch (ClassNotFoundException e) { return Utils.cast(klass, Class.forName("com.sun.max." + string).newInstance()); } } catch (InstantiationException e) { throw ProgramError.unexpected("Could not instantiate class " + string, e); } catch (IllegalAccessException e) { throw ProgramError.unexpected("Could not access class " + string, e); } catch (ClassNotFoundException e) { throw ProgramError.unexpected("Could not find class " + string, e); } } }; } /** * * @return An option type that takes a list of class names as its value. Then it reflectively creates instances * of these classes and returns them as a list. */ public static final <T> ListType<T> createInstanceListOptionType(final Class<T> klass, char separator) { return new ListType<T>(separator, createInstanceOptionType(klass)); } public static final Option.Type<Double> DOUBLE_TYPE = new Option.Type<Double>(Double.class, "double") { @Override public Double parseValue(String string) { if (string.length() == 0) { return 0.0d; } try { return Double.valueOf(string); } catch (NumberFormatException e) { throw new Option.Error("invalid double value: " + string); } } @Override public String getValueFormat() { return "<double>"; } }; public static final Option.Type<Float> FLOAT_TYPE = new Option.Type<Float>(Float.class, "float") { @Override public Float parseValue(String string) { if (string.length() == 0) { return 0.0f; } try { return Float.valueOf(string); } catch (NumberFormatException e) { throw new Option.Error("invalid float value: " + string); } } @Override public String getValueFormat() { return "<float>"; } }; public static final Option.Type<Integer> INT_TYPE = new Option.Type<Integer>(Integer.class, "int") { @Override public Integer parseValue(String string) { if (string.length() == 0) { return 0; } try { if (string.startsWith("0x")) { return Integer.valueOf(string.substring(2), 16); } else if (string.startsWith("-0x")) { return -Integer.valueOf(string.substring(3), 16); } return Integer.valueOf(string); } catch (NumberFormatException e) { throw new Option.Error("invalid int value: " + string); } } @Override public String getValueFormat() { return "<int>"; } }; public static final Option.Type<Boolean> BOOLEAN_TYPE = new Option.Type<Boolean>(Boolean.class, "boolean") { @Override public Boolean parseValue(String string) { if (string.isEmpty() || string.equalsIgnoreCase("true") || string.equalsIgnoreCase("t") || string.equalsIgnoreCase("y")) { return Boolean.TRUE; } else if (string.equalsIgnoreCase("false") || string.equalsIgnoreCase("f") || string.equalsIgnoreCase("n")) { return Boolean.FALSE; } throw new Option.Error("invalid boolean value: " + string); } @Override public String getValueFormat() { return "true|false, t|f, y|n"; } }; public static final Option.Type<Boolean> BLANK_BOOLEAN_TYPE = new Option.Type<Boolean>(Boolean.class, "boolean") { @Override public Boolean parseValue(String string) { // blank boolean always returns null return null; } @Override public String getValueFormat() { return "true|false, t|f, y|n"; } }; public static final Option.Type<File> FILE_TYPE = new Option.Type<File>(File.class, "file") { @Override public File parseValue(String string) { if (string == null || string.length() == 0) { return null; } return new File(string); } @Override public String getValueFormat() { return "<file>"; } }; public static final Option.Type<URL> URL_TYPE = new Option.Type<URL>(URL.class, "URL") { @Override public URL parseValue(String string) { if (string == null || string.length() == 0) { return null; } try { return new URL(string); } catch (MalformedURLException e) { throw new Option.Error("invalid URL: " + string); } } @Override public String getValueFormat() { return "<URL>"; } }; public static class StringListType extends ListType<String> { public StringListType(char separator) { super(separator, STRING_TYPE); } } public static class EnumListType<T extends Enum<T>> extends ListType<T> { public EnumListType(Class<T> enumClass, char separator) { super(separator, new EnumType<T>(enumClass)); } } public static final StringListType COMMA_SEPARATED_STRING_LIST_TYPE = new StringListType(','); }