/**
* FunctionDeclaration ::= FunctionsReturningStrings | FunctionsReturningNumerics | FunctionsReturningDatetime
*/
public function FunctionDeclaration()
{
$token = $this->_lexer->lookahead;
$funcName = strtolower($token['value']);
// Check for built-in functions first!
if (isset(self::$_STRING_FUNCTIONS[$funcName])) {
return $this->FunctionsReturningStrings();
} else {
if (isset(self::$_NUMERIC_FUNCTIONS[$funcName])) {
return $this->FunctionsReturningNumerics();
} else {
if (isset(self::$_DATETIME_FUNCTIONS[$funcName])) {
return $this->FunctionsReturningDatetime();
}
}
}
// Check for custom functions afterwards
$config = $this->_em->getConfiguration();
if (($func = $config->getCustomStringFunction($funcName)) !== null) {
self::$_STRING_FUNCTIONS[$funcName] = $func;
return $this->FunctionsReturningStrings();
} else {
if (($func = $config->getCustomNumericFunction($funcName)) !== null) {
self::$_NUMERIC_FUNCTIONS[$funcName] = $func;
return $this->FunctionsReturningNumerics();
} else {
if (($func = $config->getCustomDatetimeFunction($funcName)) !== null) {
self::$_DATETIME_FUNCTIONS[$funcName] = $func;
return $this->FunctionsReturningDatetime();
}
}
}
$this->syntaxError('known function', $token);
}
public function CustomFunctionsReturningStrings()
{
$funcName = $this->_lexer->lookahead['value'];
// getCustomStringFunction is case-insensitive
$funcClass = $this->_em->getConfiguration()->getCustomStringFunction($funcName);
$function = new $funcClass($funcName);
$function->parse($this);
return $function;
}
