<?php
namespace eMacros\Runtime\Value;
use eMacros\Applicable;
use eMacros\Scope;
use eMacros\GenericList;
use eMacros\Symbol;
class ValueSet implements Applicable {
/**
* Sets a symbol value
* Usage: (:= _var "Hello World")
* Returns: the assigned value
* (non-PHPdoc)
* @see \eMacros\Applicable::apply()
*/
public function apply(Scope $scope, GenericList $arguments) {
if (count($arguments) == 0) {
throw new \BadFunctionCallException("ValueSet: No parameters found.");
}
if (!($arguments[0] instanceof Symbol)) {
throw new \InvalidArgumentException(sprintf("ValueSet: Expected symbol as first argument, %s found instead.", substr(strtolower(strstr(get_class($arguments[0]), '\\')), 1)));
}
if (count($arguments) < 2) {
throw new \BadFunctionCallException("ValueSet: A value must be provided.");
}
$value = $arguments[1]->evaluate($scope);
$scope->symbols[$arguments[0]->symbol] = $value;
return $value;
}
}
?>
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