/**
* @param Lexer $lexer
* @param char $char
*/
public function input(Lexer $lexer, $char)
{
//Valid inputs in this state are:
// - Slash (/) means that we are talking about the Path Element: Dot,
// - any digit, means that we are talking about a Decimal,
// - dot, means that we are talking about the Path Element: Parent.
// - comma, means that the current argument of a function is the Current path.
//TODO: and also closing parenthesis, closing square bracket, blank.
if ($char == '/') {
$lexer->pushPath(new PathElementCurrent());
} else {
if (self::isDigit($char)) {
$lexer->setStateDecimal('0.' . $char);
} else {
if ($char == '.') {
$lexer->setStateDotdot();
} else {
if ($char == ',') {
$lexer->pushOperand(new TokenPath(new PathElementCurrent()));
$lexer->incrementLastFunctionArity();
} else {
if ($char == ')') {
$lexer->pushOperand(new TokenPath(new PathElementCurrent()));
$lexer->closeParenthesis();
} else {
if (self::isBlank($char)) {
$lexer->pushPath(new PathElementCurrent());
$lexer->setStateClosedExpression();
} else {
$this->throwError($lexer, $char);
}
}
}
}
}
}
}
/**
* @param Lexer $lexer
*/
private function pushKeyword($lexer)
{
switch ($this->buffer) {
case 'or':
$lexer->pushOperator(new TokenOr());
break;
case 'and':
$lexer->pushOperator(new TokenAnd());
break;
case 'div':
$lexer->pushOperator(new TokenDiv());
break;
case 'mod':
$lexer->pushOperator(new TokenMod());
break;
case 'true':
$lexer->pushOperand(new TokenLiteral(true));
$lexer->setStateClosedExpression();
break;
case 'false':
$lexer->pushOperand(new TokenLiteral(false));
$lexer->setStateClosedExpression();
break;
case 'gt':
case 'gte':
case 'lt':
case 'lte':
$lexer->pushOperator(new TokenComparisonBinop($this->buffer));
break;
case 'not':
$lexer->pushOperator(new TokenNot());
break;
}
}