function prologList($string)
{
if ($string != '') {
if ($string[0] == '[') {
$string = prologPredicate::__cutOuterBrackets($string);
$vars = prologPredicate::__separateStringPredicateVars($string);
$this->listValues = prologPredicate::__convertStringsToObjects($vars);
$this->charArray = false;
} else {
$this->charArray = true;
for ($index = 0; $index < strlen($string); $index++) {
array_push($this->listValues, $string[$index]);
}
}
} else {
$this->charArray = true;
for ($index = 0; $index < strlen($string); $index++) {
array_push($this->listValues, $string[$index]);
}
}
}
/**
* @return Array(PrologPredicate)
* @param $predicateList String
* @param $predicateName String
* @param $predicateObject PrologPredicate
* @desc Converts a prolog predicate string list into an array of each predicate object
*/
function seperatePredicateList($predicateList, $predicateName, $predicateObject)
{
$predicateListArray = array();
$predicateListArray = explode(",{$predicateName}", $predicateList);
//Strip the first reference to the predicateName
$predicateListArray[0] = preg_replace("/{$predicateName}/", "", $predicateListArray[0]);
for ($index = 0; $index < sizeof($predicateListArray); $index++) {
//Remove any white space
$predicateListArray[$index] = preg_replace("/\\s/", "h", $predicateListArray[$index]);
//Remove redundant first and last bracket
$predicateListArray[$index] = prologPredicate::__cutOuterBrackets($predicateListArray[$index]);
//Find all variables of predicate
$predicateVars = prologPredicate::__separateStringPredicateVars($predicateListArray[$index]);
//Recursively convert them into relevant objects
$predicateValObjects = prologPredicate::__convertStringsToObjects($predicateVars);
if ($predicateObject) {
//Create Base predicate
$predicateObject->setPredicateName($predicateName);
$predicateObject->setPredicateValues($predicateValObjects);
$predicate = $predicateObject;
} else {
$predicate = new prologPredicate($predicateName, $predicateValObjects);
}
//echo $predicate->toString();
$predicateListArray[$index] = $predicate;
}
return $predicateListArray;
}