<?php
namespace eMacros\Runtime\Regex;
use eMacros\Applicable;
use eMacros\Scope;
use eMacros\GenericList;
class RegexReplaceCallback implements Applicable {
/**
* Replaces all matches specified by a pattern on a given subject
* Usage: see RegexPackageTest class
* Returns: array | string
* (non-PHPdoc)
* @see \eMacros\Applicable::apply()
*/
public function apply(Scope $scope, GenericList $arguments) {
$nargs = count($arguments);
if ($nargs < 3) {
throw new \BadFunctionCallException("RegexReplaceCallback: Function expects at least 3 parameters.");
}
$args = array();
for ($i = 0; $i < $nargs; $i++) {
if ($i == 4) break;
$args[] = $arguments[$i]->evaluate($scope);
}
if (!is_callable($args[1])) {
throw new \InvalidArgumentException("RegexReplaceCallback: Second parameter is not a valid callback.");
}
if ($nargs < 4) {
return call_user_func_array('preg_replace_callback', $args);
}
else {
$target = $arguments[4];
if (!($target instanceof Symbol)) {
throw new \InvalidArgumentException(sprintf("RegexReplaceCallback: Expected symbol as fourth parameter but %s was found instead.", substr(strtolower(strstr(get_class($arguments[4]), '\\')), 1)));
}
$ref = $target->symbol;
$result = preg_replace_callback($args[0], $args[1], $args[2], $args[3], $count);
$scope->symbols[$ref] = $count;
return $result;
}
}
}
?>
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