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Naming tweak

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This commit is contained in:
Jeff Moser
2010-10-14 21:51:43 -04:00
parent 110463ad49
commit 455f2b3061
66 changed files with 24 additions and 26 deletions
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35
Skills/Guard.php Normal file
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@ -0,0 +1,35 @@
<?php
namespace Moserware\Skills;
/**
* Verifies argument contracts.
*
* @see http://www.moserware.com/2008/01/borrowing-ideas-from-3-interesting.html
*/
class Guard
{
public static function argumentNotNull($value, $parameterName)
{
if ($value == null)
{
throw new Exception($parameterName . " can not be null");
}
}
public static function argumentIsValidIndex($index, $count, $parameterName)
{
if (($index < 0) || ($index >= $count))
{
throw new Exception($parameterName . " is an invalid index");
}
}
public static function argumentInRangeInclusive($value, $min, $max, $parameterName)
{
if (($value < $min) || ($value > $max))
{
throw new Exception($parameterName . " is not in the valid range [" . $min . ", " . $max . "]");
}
}
}
?>