public function IdentificationVariableDeclaration()
{
$rangeVariableDeclaration = $this->RangeVariableDeclaration();
$indexBy = $this->_lexer->isNextToken(Lexer::T_INDEX) ? $this->IndexBy() : null;
$joinVariableDeclarations = array();
while (
$this->_lexer->isNextToken(Lexer::T_LEFT) ||
$this->_lexer->isNextToken(Lexer::T_INNER) ||
$this->_lexer->isNextToken(Lexer::T_JOIN)
) {
$joinVariableDeclarations[] = $this->JoinVariableDeclaration();
}
return new AST\IdentificationVariableDeclaration(
$rangeVariableDeclaration, $indexBy, $joinVariableDeclarations
);
}