/**
* Parses an isset-expression node.
*
* <code>
* // -----------
* if (isset($foo)) {
* // -----------
* }
*
* // -----------------------
* if (isset($foo, $bar, $baz)) {
* // -----------------------
* }
* </code>
*
* @return PHP_Depend_Code_ASTIssetExpression
* @since 0.9.12
*/
private function parseIssetExpression()
{
$startToken = $this->consumeToken(self::T_ISSET);
$this->consumeComments();
$this->consumeToken(self::T_PARENTHESIS_OPEN);
$expr = $this->builder->buildAstIssetExpression();
$expr = $this->parseVariableList($expr);
$stopToken = $this->consumeToken(self::T_PARENTHESIS_CLOSE);
$expr->configureLinesAndColumns($startToken->startLine, $stopToken->endLine, $startToken->startColumn, $stopToken->endColumn);
return $expr;
}