+++ /dev/null
-/* NumberFormat.java -- Formats and parses numbers
- Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.text;
-
-import java.util.Locale;
-import java.util.ResourceBundle;
-import java.util.MissingResourceException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.io.IOException;
-
-/**
- * This is the abstract superclass of all classes which format and
- * parse numeric values such as decimal numbers, integers, currency values,
- * and percentages. These classes perform their parsing and formatting
- * in a locale specific manner, accounting for such items as differing
- * currency symbols and thousands separators.
- * <p>
- * To create an instance of a concrete subclass of <code>NumberFormat</code>,
- * do not call a class constructor directly. Instead, use one of the
- * static factory methods in this class such as
- * <code>getCurrencyInstance</code>.
- *
- * @author Tom Tromey <tromey@cygnus.com>
- * @author Aaron M. Renn (arenn@urbanophile.com)
- * @date March 4, 1999
- */
-/* Written using "Java Class Libraries", 2nd edition, plus online
- * API docs for JDK 1.2 from http://www.javasoft.com.
- * Status: Believed complete and correct to 1.2, except getAvailableLocales.
- */
-public abstract class NumberFormat extends Format implements Cloneable
-{
- /**
- * This is a constant used to create a <code>FieldPosition</code> object
- * that will return the integer portion of a formatted number.
- */
- public static final int INTEGER_FIELD = 0;
-
- /**
- * This is a constant used to create a <code>FieldPosition</code> object
- * that will return the fractional portion of a formatted number.
- */
- public static final int FRACTION_FIELD = 1;
-
- /**
- * This method is a specialization of the format method that performs
- * a simple formatting of the specified <code>long</code> number.
- *
- * @param number The <code>long</code> to format.
- *
- * @return The formatted number
- */
- public final String format (long number)
- {
- StringBuffer sbuf = new StringBuffer(50);
- format (number, sbuf, null);
- return sbuf.toString();
- }
-
- public final StringBuffer format (Object obj, StringBuffer sbuf,
- FieldPosition pos)
- {
- if (obj instanceof Number)
- return format(((Number) obj).doubleValue(), sbuf, pos);
- else
- throw new IllegalArgumentException
- ("Cannot format given Object as a Number");
- }
-
- /**
- * This method formats the specified <code>double</code> and appends it to
- * a <code>StringBuffer</code>.
- *
- * @param number The <code>double</code> to format.
- * @param sb The <code>StringBuffer</code> to append the formatted number to.
- * @param pos The desired <code>FieldPosition</code>.
- *
- * @return The <code>StringBuffer</code> with the appended number.
- */
- public abstract StringBuffer format (double number,
- StringBuffer sbuf, FieldPosition pos);
-
- /**
- * This method formats the specified <code>long</code> and appends it to
- * a <code>StringBuffer</code>.
- *
- * @param number The <code>long</code> to format.
- * @param sb The <code>StringBuffer</code> to append the formatted number to.
- * @param pos The desired <code>FieldPosition</code>.
- *
- * @return The <code>StringBuffer</code> with the appended number.
- */
- public abstract StringBuffer format (long number,
- StringBuffer sbuf, FieldPosition pos);
-
- /**
- * This method tests the specified object for equality against this object.
- * This will be <code>true</code> if the following conditions are met:
- * <p>
- * <ul>
- * <li>The specified object is not <code>null</code>.
- * <li>The specified object is an instance of <code>NumberFormat</code>.
- * </ul>
- * <p>
- * Since this method does not test much, it is highly advised that
- * concrete subclasses override this method.
- *
- * @param obj The <code>Object</code> to test against equality with
- * this object.
- *
- * @return <code>true</code> if the specified object is equal to
- * this object, <code>false</code> otherwise.
- */
- public boolean equals (Object obj)
- {
- if (! (obj instanceof NumberFormat))
- return false;
- NumberFormat nf = (NumberFormat) obj;
- return (groupingUsed == nf.groupingUsed
- && maximumFractionDigits == nf.maximumFractionDigits
- && maximumIntegerDigits == nf.maximumIntegerDigits
- && minimumFractionDigits == nf.minimumFractionDigits
- && minimumIntegerDigits == nf.minimumIntegerDigits
- && parseIntegerOnly == nf.parseIntegerOnly);
- }
-
- /**
- * This method returns a list of locales for which concrete instances
- * of <code>NumberFormat</code> subclasses may be created.
- *
- * @return The list of available locales.
- */
- public static Locale[] getAvailableLocales ()
- {
- Locale[] list = new Locale[1];
- list[0] = Locale.US;
- return list;
- }
-
- private static final NumberFormat computeInstance (Locale loc,
- String resource,
- String def)
- {
- ResourceBundle res;
- try
- {
- res = ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
- loc);
- }
- catch (MissingResourceException x)
- {
- res = null;
- }
- String fmt;
- try
- {
- fmt = res == null ? def : res.getString(resource);
- }
- catch (MissingResourceException x)
- {
- fmt = def;
- }
- DecimalFormatSymbols dfs = new DecimalFormatSymbols (loc);
- return new DecimalFormat (fmt, dfs);
- }
-
- /**
- * This method returns an instance of <code>NumberFormat</code> suitable
- * for formatting and parsing currency values in the default locale.
- *
- * @return An instance of <code>NumberFormat</code> for handling currencies.
- */
- public static final NumberFormat getCurrencyInstance ()
- {
- return getCurrencyInstance (Locale.getDefault());
- }
-
- /**
- * This method returns an instance of <code>NumberFormat</code> suitable
- * for formatting and parsing currency values in the specified locale.
- *
- * @return An instance of <code>NumberFormat</code> for handling currencies.
- */
- public static NumberFormat getCurrencyInstance (Locale loc)
- {
- return computeInstance (loc, "currencyFormat", "$#,##0.00;($#,##0.00)");
- }
-
- /**
- * This method returns a default instance for the default locale. This
- * will be a concrete subclass of <code>NumberFormat</code>, but the
- * actual class returned is dependent on the locale.
- *
- * @return An instance of the default <code>NumberFormat</code> class.
- */
- public static final NumberFormat getInstance ()
- {
- return getInstance (Locale.getDefault());
- }
-
- /**
- * This method returns a default instance for the specified locale. This
- * will be a concrete subclass of <code>NumberFormat</code>, but the
- * actual class returned is dependent on the locale.
- *
- * @param locale The desired locale.
- *
- * @return An instance of the default <code>NumberFormat</code> class.
- */
- public static NumberFormat getInstance (Locale loc)
- {
- // For now always return a number instance.
- return getNumberInstance (loc);
- }
-
- /**
- * This method returns the maximum number of digits allowed in the fraction
- * portion of a number.
- *
- * @return The maximum number of digits allowed in the fraction
- * portion of a number.
- */
- public int getMaximumFractionDigits ()
- {
- return maximumFractionDigits;
- }
-
- /**
- * This method returns the maximum number of digits allowed in the integer
- * portion of a number.
- *
- * @return The maximum number of digits allowed in the integer
- * portion of a number.
- */
- public int getMaximumIntegerDigits ()
- {
- return maximumIntegerDigits;
- }
-
- /**
- * This method returns the minimum number of digits allowed in the fraction
- * portion of a number.
- *
- * @return The minimum number of digits allowed in the fraction
- * portion of a number.
- */
- public int getMinimumFractionDigits ()
- {
- return minimumFractionDigits;
- }
-
- /**
- * This method returns the minimum number of digits allowed in the integer
- * portion of a number.
- *
- * @return The minimum number of digits allowed in the integer
- * portion of a number.
- */
- public int getMinimumIntegerDigits ()
- {
- return minimumIntegerDigits;
- }
-
- /**
- * This method returns a default instance for the specified locale. This
- * will be a concrete subclass of <code>NumberFormat</code>, but the
- * actual class returned is dependent on the locale.
- *
- * @param locale The desired locale.
- *
- * @return An instance of the default <code>NumberFormat</code> class.
- */
- public static final NumberFormat getNumberInstance ()
- {
- return getNumberInstance (Locale.getDefault());
- }
-
- /**
- * This method returns a general purpose number formatting and parsing
- * class for the default locale. This will be a concrete subclass of
- * <code>NumberFormat</code>, but the actual class returned is dependent
- * on the locale.
- *
- * @return An instance of a generic number formatter for the default locale.
- */
- public static NumberFormat getNumberInstance (Locale loc)
- {
- return computeInstance (loc, "numberFormat", "#,##0.###");
- }
-
- /**
- * This method returns an instance of <code>NumberFormat</code> suitable
- * for formatting and parsing percentage values in the default locale.
- *
- * @return An instance of <code>NumberFormat</code> for handling percentages.
- */
- public static final NumberFormat getPercentInstance ()
- {
- return getPercentInstance (Locale.getDefault());
- }
-
- /**
- * This method returns an instance of <code>NumberFormat</code> suitable
- * for formatting and parsing percentage values in the specified locale.
- *
- * @param locale The desired locale.
- *
- * @return An instance of <code>NumberFormat</code> for handling percentages.
- */
- public static NumberFormat getPercentInstance (Locale loc)
- {
- return computeInstance (loc, "percentFormat", "#,##0%");
- }
-
- /**
- * This method returns a hash value for this object.
- *
- * @return The hash code.
- */
- public int hashCode ()
- {
- int hash = super.hashCode();
- hash ^= (maximumFractionDigits + maximumIntegerDigits
- + minimumFractionDigits + minimumIntegerDigits);
- if (groupingUsed)
- hash ^= 0xf0f0;
- if (parseIntegerOnly)
- hash ^= 0x0f0f;
- return hash;
- }
-
- /**
- * This method tests whether or not grouping is in use. Grouping is
- * a method of marking separations in numbers, such as thousand separators
- * in the US English locale. The grouping positions and symbols are all
- * locale specific. As an example, with grouping disabled, the number one
- * million would appear as "1000000". With grouping enabled, this number
- * might appear as "1,000,000". (Both of these assume the US English
- * locale).
- *
- * @return <code>true</code> if grouping is enabled,
- * <code>false</code> otherwise.
- */
- public boolean isGroupingUsed ()
- {
- return groupingUsed;
- }
-
- /**
- * This method tests whether or not only integer values should be parsed.
- * If this class is parsing only integers, parsing stops at the decimal
- * point.
- *
- * @return <code>true</code> if only integers are parsed,
- * <code>false</code> otherwise.
- */
- public boolean isParseIntegerOnly ()
- {
- return parseIntegerOnly;
- }
-
- /**
- * This is a default constructor for use by subclasses.
- */
- public NumberFormat ()
- {
- }
-
- /**
- * This method parses the specified string into a <code>Number</code>. This
- * will be a <code>Long</code> if possible, otherwise it will be a
- * <code>Double</code>. If no number can be parsed, no exception is
- * thrown. Instead, the parse position remains at its initial index.
- *
- * @param str The string to parse.
- * @param pp The desired <code>ParsePosition</code>.
- *
- * @return The parsed <code>Number</code>
- */
- public abstract Number parse (String sourceStr, ParsePosition pos);
-
- /**
- * This method parses the specified string into a <code>Number</code>. This
- * will be a <code>Long</code> if possible, otherwise it will be a
- * <code>Double</code>. If no number can be parsed, an exception will be
- * thrown.
- *
- * @param str The string to parse.
- *
- * @return The parsed <code>Number</code>
- *
- * @exception ParseException If no number can be parsed.
- */
- public Number parse (String sourceStr) throws ParseException
- {
- ParsePosition pp = new ParsePosition (0);
- Number r = parse (sourceStr, pp);
- if (r == null)
- {
- int index = pp.getErrorIndex();
- if (index < 0)
- index = pp.getIndex();
- throw new ParseException ("couldn't parse number", index);
- }
- return r;
- }
-
- /**
- * This method parses the specified string into an <code>Object</code>. This
- * will be a <code>Long</code> if possible, otherwise it will be a
- * <code>Double</code>. If no number can be parsed, no exception is
- * thrown. Instead, the parse position remains at its initial index.
- *
- * @param str The string to parse.
- * @param pp The desired <code>ParsePosition</code>.
- *
- * @return The parsed <code>Object</code>
- */
- public final Object parseObject (String sourceStr, ParsePosition pos)
- {
- return parse (sourceStr, pos);
- }
-
- /**
- * This method sets the grouping behavior of this formatter. Grouping is
- * a method of marking separations in numbers, such as thousand separators
- * in the US English locale. The grouping positions and symbols are all
- * locale specific. As an example, with grouping disabled, the number one
- * million would appear as "1000000". With grouping enabled, this number
- * might appear as "1,000,000". (Both of these assume the US English
- * locale).
- *
- * @param groupingUsed <code>true</code> to enable grouping,
- * <code>false</code> to disable it.
- */
- public void setGroupingUsed (boolean newValue)
- {
- groupingUsed = newValue;
- }
-
- /**
- * This method sets the maximum number of digits allowed in the fraction
- * portion of a number to the specified value. If this is less than the
- * current minimum allowed digits, the minimum allowed digits value will
- * be lowered to be equal to the new maximum allowed digits value.
- *
- * @param maximumFractionDigits The new maximum fraction digits value.
- */
- public void setMaximumFractionDigits (int newValue)
- {
- maximumFractionDigits = newValue;
- if (getMinimumFractionDigits () > maximumFractionDigits)
- setMinimumFractionDigits (maximumFractionDigits);
- }
-
- /**
- * This method sets the maximum number of digits allowed in the integer
- * portion of a number to the specified value. If this is less than the
- * current minimum allowed digits, the minimum allowed digits value will
- * be lowered to be equal to the new maximum allowed digits value.
- *
- * @param maximumIntegerDigits The new maximum integer digits value.
- */
- public void setMaximumIntegerDigits (int newValue)
- {
- maximumIntegerDigits = newValue;
- if (getMinimumIntegerDigits () > maximumIntegerDigits)
- setMinimumIntegerDigits (maximumIntegerDigits);
- }
-
- /**
- * This method sets the minimum number of digits allowed in the fraction
- * portion of a number to the specified value. If this is greater than the
- * current maximum allowed digits, the maximum allowed digits value will
- * be raised to be equal to the new minimum allowed digits value.
- *
- * @param minimumFractionDigits The new minimum fraction digits value.
- */
- public void setMinimumFractionDigits (int newValue)
- {
- minimumFractionDigits = newValue;
- if (getMaximumFractionDigits () < minimumFractionDigits)
- setMaximumFractionDigits (minimumFractionDigits);
- }
-
- /**
- * This method sets the minimum number of digits allowed in the integer
- * portion of a number to the specified value. If this is greater than the
- * current maximum allowed digits, the maximum allowed digits value will
- * be raised to be equal to the new minimum allowed digits value.
- *
- * @param minimumIntegerDigits The new minimum integer digits value.
- */
- public void setMinimumIntegerDigits (int newValue)
- {
- minimumIntegerDigits = newValue;
- if (getMaximumIntegerDigits () < minimumIntegerDigits)
- setMaximumIntegerDigits (minimumIntegerDigits);
- }
-
- /**
- * This method sets the parsing behavior of this object to parse only
- * integers or not.
- *
- * @param parseIntegerOnly <code>true</code> to parse only integers,
- * <code>false</code> otherwise.
- */
- public void setParseIntegerOnly (boolean value)
- {
- parseIntegerOnly = value;
- }
-
- /**
- * This method is a specialization of the format method that performs
- * a simple formatting of the specified <code>double</code> number.
- *
- * @param number The <code>double</code> to format.
- *
- * @return The formatted number
- */
- public final String format (double number)
- {
- StringBuffer sbuf = new StringBuffer(50);
- format (number, sbuf, null);
- return sbuf.toString();
- }
-
- // These field names are fixed by the serialization spec.
- boolean groupingUsed;
- int maximumFractionDigits;
- private byte maxFractionDigits;
- int maximumIntegerDigits;
- private byte maxIntegerDigits;
- int minimumFractionDigits;
- private byte minFractionDigits;
- int minimumIntegerDigits;
- private byte minIntegerDigits;
- boolean parseIntegerOnly;
- private int serialVersionOnStream;
- private static final long serialVersionUID = -2308460125733713944L;
-
- private void readObject(ObjectInputStream stream)
- throws IOException, ClassNotFoundException
- {
- stream.defaultReadObject();
- if (serialVersionOnStream < 1)
- {
- maximumFractionDigits = maxFractionDigits;
- maximumIntegerDigits = maxIntegerDigits;
- minimumFractionDigits = minFractionDigits;
- minimumIntegerDigits = minIntegerDigits;
- serialVersionOnStream = 1;
- }
- }
-
- private void writeObject(ObjectOutputStream stream) throws IOException
- {
- maxFractionDigits = maximumFractionDigits < Byte.MAX_VALUE ?
- (byte) maximumFractionDigits : Byte.MAX_VALUE;
- maxIntegerDigits = maximumIntegerDigits < Byte.MAX_VALUE ?
- (byte) maximumIntegerDigits : Byte.MAX_VALUE;
- minFractionDigits = minimumFractionDigits < Byte.MAX_VALUE ?
- (byte) minimumFractionDigits : Byte.MAX_VALUE;
- minIntegerDigits = minimumIntegerDigits < Byte.MAX_VALUE ?
- (byte) minimumIntegerDigits : Byte.MAX_VALUE;
- serialVersionOnStream = 1;
- stream.defaultWriteObject();
- }
-}
projects / msp430-gcc.git / blobdiff