/**
* @param string $name
* @param integer $arity
*/
public function __construct($name, $arity)
{
parent::__construct(self::PRIORITY_FUNCTION);
$this->name = $name;
$this->arity = $arity;
$this->function = null;
$this->closed = false;
}
/**
* @param string $sign
*/
public function __construct($sign)
{
parent::__construct(self::PRIORITY_MINUS);
$this->sign = $sign;
}
/**
* @param TokenOperator $tokenOperator
*/
public function pushOperator($tokenOperator)
{
//If priority of the new operator
//is lower than or equal to that of the previous, if any,
//then pop the stack up to the nearest operator
//of lower priority strictly, or up to left parenthesis.
if (!$tokenOperator instanceof TokenLParen && !$tokenOperator instanceof TokenFunction && !$tokenOperator instanceof TokenLBracket) {
while (sizeof($this->stackOperators) > 0) {
$operator = $this->stackOperators[sizeof($this->stackOperators) - 1];
if ($operator instanceof TokenLParen) {
break;
}
if ($operator instanceof TokenFunction && !$operator->isClosed()) {
break;
}
if ($tokenOperator->getPriority() <= $operator->getPriority()) {
array_pop($this->stackOperators);
$nbOperands = $operator->getNumOperands();
if ($nbOperands) {
// Check that we have enough operands on the stack.
if (sizeof($this->stackRP) < $nbOperands) {
$message = $this->getViewFile()->getFilename() . '(' . $this->getViewLine() . '): Missing operand in expression: ' . $this->expression;
throw new LexerSyntaxErrorException('', $this->getViewFile()->getFilename(), $this->getViewLine());
}
$operator->setOperands(array_splice($this->stackRP, sizeof($this->stackRP) - $nbOperands, $nbOperands));
}
$this->stackRP[] = $operator;
if ($operator instanceof TokenFunction) {
array_pop($this->stackFunctions);
break;
}
} else {
break;
}
}
}
$this->stackOperators[] = $tokenOperator;
if ($tokenOperator instanceof TokenFunction) {
$this->stackFunctions[] =& $tokenOperator;
}
$this->setStateEmpty();
}
public function __construct()
{
parent::__construct(self::PRIORITY_MUL_DIV);
}
/**
* @param string $sign
*/
public function __construct()
{
parent::__construct(self::PRIORITY_MINUS);
}
public function __construct()
{
parent::__construct(self::PRIORITY_LEFT_PAREN);
}