mirror of git://gcc.gnu.org/git/gcc.git
903 lines
29 KiB
Java
903 lines
29 KiB
Java
/* NumberFormat.java -- Formats and parses numbers
|
|
Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2007, 2012
|
|
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., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301 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 gnu.java.locale.LocaleHelper;
|
|
|
|
import java.io.IOException;
|
|
import java.io.InvalidObjectException;
|
|
import java.io.ObjectInputStream;
|
|
import java.io.ObjectOutputStream;
|
|
|
|
import java.text.spi.NumberFormatProvider;
|
|
|
|
import java.util.Currency;
|
|
import java.util.Locale;
|
|
import java.util.MissingResourceException;
|
|
import java.util.ResourceBundle;
|
|
import java.util.ServiceLoader;
|
|
|
|
/**
|
|
* 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;
|
|
|
|
public static class Field extends Format.Field
|
|
{
|
|
static final long serialVersionUID = 7494728892700160890L;
|
|
|
|
/**
|
|
* Attribute set to all characters containing digits of the integer
|
|
* part.
|
|
*/
|
|
public static final NumberFormat.Field INTEGER
|
|
= new Field("integer");
|
|
|
|
/**
|
|
* Attribute set to all characters containing digits of the fractional
|
|
* part.
|
|
*/
|
|
public static final NumberFormat.Field FRACTION
|
|
= new Field("fraction");
|
|
|
|
/**
|
|
* Attribute set to all characters containing digits of the exponential
|
|
* part.
|
|
*/
|
|
public static final NumberFormat.Field EXPONENT
|
|
= new Field("exponent");
|
|
|
|
/**
|
|
* Attribute set to all characters containing a decimal separator.
|
|
*/
|
|
public static final NumberFormat.Field DECIMAL_SEPARATOR
|
|
= new Field("decimal separator");
|
|
|
|
/**
|
|
* Attribute set to all characters containing a sign (plus or minus).
|
|
*/
|
|
public static final NumberFormat.Field SIGN
|
|
= new Field("sign");
|
|
|
|
/**
|
|
* Attribute set to all characters containing a grouping separator (e.g.
|
|
* a comma, a white space,...).
|
|
*/
|
|
public static final NumberFormat.Field GROUPING_SEPARATOR
|
|
= new Field("grouping separator");
|
|
|
|
/**
|
|
* Attribute set to all characters containing an exponential symbol (e.g.
|
|
* 'E')
|
|
*/
|
|
public static final NumberFormat.Field EXPONENT_SYMBOL
|
|
= new Field("exponent symbol");
|
|
|
|
/**
|
|
* Attribute set to all characters containing a percent symbol (e.g. '%')
|
|
*/
|
|
public static final NumberFormat.Field PERCENT
|
|
= new Field("percent");
|
|
|
|
/**
|
|
* Attribute set to all characters containing a permille symbol.
|
|
*/
|
|
public static final NumberFormat.Field PERMILLE
|
|
= new Field("permille");
|
|
|
|
/**
|
|
* Attribute set to all characters containing the currency unit.
|
|
*/
|
|
public static final NumberFormat.Field CURRENCY
|
|
= new Field("currency");
|
|
|
|
/**
|
|
* Attribute set to all characters containing the exponent sign.
|
|
*/
|
|
public static final NumberFormat.Field EXPONENT_SIGN
|
|
= new Field("exponent sign");
|
|
|
|
/**
|
|
* Private fields to register all fields contained in this descriptor.
|
|
*/
|
|
private static final NumberFormat.Field[] allFields =
|
|
{
|
|
INTEGER, FRACTION, EXPONENT, DECIMAL_SEPARATOR, SIGN,
|
|
GROUPING_SEPARATOR, EXPONENT_SYMBOL, PERCENT,
|
|
PERMILLE, CURRENCY, EXPONENT_SIGN
|
|
};
|
|
|
|
/**
|
|
* This constructor is only used by the deserializer. Without it,
|
|
* it would fail to construct a valid object.
|
|
*/
|
|
private Field()
|
|
{
|
|
super("");
|
|
}
|
|
|
|
/**
|
|
* Create a Field instance with the specified field name.
|
|
*
|
|
* @param field_name Field name for the new Field instance.
|
|
*/
|
|
protected Field(String field_name)
|
|
{
|
|
super (field_name);
|
|
}
|
|
|
|
/**
|
|
* This function is used by the deserializer to know which object
|
|
* to use when it encounters an encoded NumberFormat.Field in a
|
|
* serialization stream. If the stream is valid it should return
|
|
* one of the above field. In the other case we throw an exception.
|
|
*
|
|
* @return a valid official NumberFormat.Field instance.
|
|
*
|
|
* @throws InvalidObjectException if the field name is invalid.
|
|
*/
|
|
protected Object readResolve() throws InvalidObjectException
|
|
{
|
|
String s = getName();
|
|
for (int i = 0; i < allFields.length; i++)
|
|
if (s.equals(allFields[i].getName()))
|
|
return allFields[i];
|
|
|
|
throw new InvalidObjectException("no such NumberFormat field called "
|
|
+ s);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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, new FieldPosition(0));
|
|
return sbuf.toString();
|
|
}
|
|
|
|
/**
|
|
* @specnote this method was final in releases before 1.5
|
|
*/
|
|
public StringBuffer format (Object obj, StringBuffer sbuf,
|
|
FieldPosition pos)
|
|
{
|
|
if (obj instanceof Number)
|
|
return format(((Number) obj).doubleValue(), sbuf, pos);
|
|
|
|
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 sbuf 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 sbuf 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 NumberFormat computeInstance(Locale loc, String resource,
|
|
String def)
|
|
throws MissingResourceException
|
|
{
|
|
if (loc.equals(Locale.ROOT))
|
|
return new DecimalFormat(def, DecimalFormatSymbols.getInstance(loc));
|
|
ResourceBundle res =
|
|
ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
|
loc, ClassLoader.getSystemClassLoader());
|
|
String fmt;
|
|
try
|
|
{
|
|
fmt = res == null ? def : res.getString(resource);
|
|
}
|
|
catch (MissingResourceException x)
|
|
{
|
|
fmt = def;
|
|
}
|
|
DecimalFormatSymbols dfs = DecimalFormatSymbols.getInstance(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)
|
|
{
|
|
try
|
|
{
|
|
NumberFormat format;
|
|
|
|
format = computeInstance (loc, "currencyFormat",
|
|
"\u00A4#,##0.00;(\u00A4#,##0.00)");
|
|
format.setMaximumFractionDigits(format.getCurrency().getDefaultFractionDigits());
|
|
return format;
|
|
}
|
|
catch (MissingResourceException e)
|
|
{
|
|
for (NumberFormatProvider p :
|
|
ServiceLoader.load(NumberFormatProvider.class))
|
|
{
|
|
for (Locale l : p.getAvailableLocales())
|
|
{
|
|
if (l.equals(loc))
|
|
{
|
|
NumberFormat nf = p.getCurrencyInstance(loc);
|
|
if (nf != null)
|
|
return nf;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return getCurrencyInstance(LocaleHelper.getFallbackLocale(loc));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 loc 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.
|
|
*
|
|
* @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)
|
|
{
|
|
try
|
|
{
|
|
return computeInstance (loc, "numberFormat", "#,##0.###");
|
|
}
|
|
catch (MissingResourceException e)
|
|
{
|
|
for (NumberFormatProvider p :
|
|
ServiceLoader.load(NumberFormatProvider.class))
|
|
{
|
|
for (Locale l : p.getAvailableLocales())
|
|
{
|
|
if (l.equals(loc))
|
|
{
|
|
NumberFormat nf = p.getNumberInstance(loc);
|
|
if (nf != null)
|
|
return nf;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return getNumberInstance(LocaleHelper.getFallbackLocale(loc));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This method returns an integer 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 an integer number formatter for the default locale.
|
|
* @since 1.4
|
|
*/
|
|
public static final NumberFormat getIntegerInstance()
|
|
{
|
|
return getIntegerInstance (Locale.getDefault());
|
|
}
|
|
|
|
/**
|
|
* This method returns an integer 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.
|
|
*
|
|
* @param locale the desired locale.
|
|
*
|
|
* @return An instance of an integer number formatter for the desired locale.
|
|
* @since 1.4
|
|
*/
|
|
public static NumberFormat getIntegerInstance(Locale locale)
|
|
{
|
|
try
|
|
{
|
|
NumberFormat format = computeInstance (locale,
|
|
"integerFormat", "#,##0");
|
|
format.setMaximumFractionDigits(0);
|
|
format.setParseIntegerOnly (true);
|
|
return format;
|
|
}
|
|
catch (MissingResourceException e)
|
|
{
|
|
for (NumberFormatProvider p :
|
|
ServiceLoader.load(NumberFormatProvider.class))
|
|
{
|
|
for (Locale l : p.getAvailableLocales())
|
|
{
|
|
if (l.equals(locale))
|
|
{
|
|
NumberFormat nf = p.getIntegerInstance(locale);
|
|
if (nf != null)
|
|
return nf;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return getIntegerInstance(LocaleHelper.getFallbackLocale(locale));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 loc The desired locale.
|
|
*
|
|
* @return An instance of <code>NumberFormat</code> for handling percentages.
|
|
*/
|
|
public static NumberFormat getPercentInstance (Locale loc)
|
|
{
|
|
try
|
|
{
|
|
return computeInstance (loc, "percentFormat", "#,##0%");
|
|
}
|
|
catch (MissingResourceException e)
|
|
{
|
|
for (NumberFormatProvider p :
|
|
ServiceLoader.load(NumberFormatProvider.class))
|
|
{
|
|
for (Locale l : p.getAvailableLocales())
|
|
{
|
|
if (l.equals(loc))
|
|
{
|
|
NumberFormat nf = p.getPercentInstance(loc);
|
|
if (nf != null)
|
|
return nf;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return getPercentInstance(LocaleHelper.getFallbackLocale(loc));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
protected 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 sourceStr The string to parse.
|
|
* @param pos 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 sourceStr 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 sourceStr The string to parse.
|
|
* @param pos 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 newValue <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 digits The new maximum fraction digits value.
|
|
*/
|
|
public void setMaximumFractionDigits (int digits)
|
|
{
|
|
maximumFractionDigits = digits;
|
|
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 digits The new maximum integer digits value.
|
|
*/
|
|
public void setMaximumIntegerDigits (int digits)
|
|
{
|
|
maximumIntegerDigits = digits;
|
|
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 digits The new minimum fraction digits value.
|
|
*/
|
|
public void setMinimumFractionDigits (int digits)
|
|
{
|
|
minimumFractionDigits = digits;
|
|
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 digits The new minimum integer digits value.
|
|
*/
|
|
public void setMinimumIntegerDigits (int digits)
|
|
{
|
|
minimumIntegerDigits = digits;
|
|
if (getMaximumIntegerDigits () < minimumIntegerDigits)
|
|
setMaximumIntegerDigits (minimumIntegerDigits);
|
|
}
|
|
|
|
/**
|
|
* This method sets the parsing behavior of this object to parse only
|
|
* integers or not.
|
|
*
|
|
* @param value <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);
|
|
FieldPosition position = new FieldPosition(0);
|
|
|
|
format (number, sbuf, position);
|
|
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();
|
|
}
|
|
|
|
/**
|
|
* Returns the currency used by this number format when formatting currency
|
|
* values.
|
|
*
|
|
* The default implementation throws UnsupportedOperationException.
|
|
*
|
|
* @return The used currency object, or null.
|
|
*
|
|
* @throws UnsupportedOperationException If the number format class doesn't
|
|
* implement currency formatting.
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
public Currency getCurrency()
|
|
{
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
|
|
/**
|
|
* Sets the currency used by this number format when formatting currency
|
|
* values.
|
|
*
|
|
* The default implementation throws UnsupportedOperationException.
|
|
*
|
|
* @param currency The new currency to be used by this number format.
|
|
*
|
|
* @throws NullPointerException If currenc is null.
|
|
* @throws UnsupportedOperationException If the number format class doesn't
|
|
* implement currency formatting.
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
public void setCurrency(Currency currency)
|
|
{
|
|
if (currency == null)
|
|
throw new NullPointerException("currency may not be null");
|
|
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
}
|