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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2007, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.runtime
import Predef.NoSuchElementException
/** <p>
* For example, in the following code
* </p>
* <pre>
* <b>object</b> test <b>extends</b> Application {
* Console.println(<chr>'\40'</chr>.isWhitespace)
* Console.println('\011'.isWhitespace)
* Console.println('1'.asDigit == 1)
* Console.println('A'.asDigit == 10)
* }</pre>
* <p>
* the implicit conversions are performed using the predefined view
* <a href="../Predef$object.html#charWrapper(scala.Char)"
* target="contentFrame"><code>Predef.charWrapper</code></a>.
* </p>
*/
final class RichChar(x: Char) extends Proxy with Ordered[Char] {
// Proxy.self
def self: Any = x
// Ordered[Char].compare
def compare (y: Char): Int = if (x < y) -1 else if (x > y) 1 else 0
def asDigit: Int = System.Char.GetNumericValue(x).toInt
def isControl: Boolean = System.Char.IsControl(x)
def isDigit: Boolean = System.Char.IsDigit(x)
def isLetter: Boolean = System.Char.IsLetter(x)
def isLetterOrDigit: Boolean = System.Char.IsLetterOrDigit(x)
def isLowerCase: Boolean = System.Char.IsLower(x)
def isUpperCase: Boolean = System.Char.IsUpper(x)
def isWhitespace: Boolean = System.Char.IsWhiteSpace(x)
def toLowerCase: Char = System.Char.ToLower(x)
def toUpperCase: Char = System.Char.ToUpper(x)
/** Create an Iterator[Char] over the characters from 'x' to 'y' - 1
*/
def until(limit: Char): Iterator[Char] = new Iterator[Char] {
private var ch = x
def hasNext: Boolean = ch < limit
def next: Char =
if (hasNext) { val j = ch; ch = (ch + 1).toChar; j }
else throw new NoSuchElementException("next on empty iterator")
}
//def until(y: Char): Iterator[Char] = to(y)
/** Create an Iterator[Char] over the characters from 'x' to 'y'
*/
def to(y: Char): Iterator[Char] = until((y + 1).toChar)
}
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