private static ExpressionSyntax Index(ParserRuleContext node)
{
if (node.ChildCount == 1)
{
return(Expression(node.GetRuleContext <ParserRuleContext>(0)));
}
Debug.Assert(node.ChildCount == 4);
var expr = visitNode(node.GetRuleContext <ParserRuleContext>(0));
var index = (ArgumentListSyntax)Arguments(node.GetRuleContext <ParserRuleContext>(2));
return(CSharp.ElementAccessExpression(
expr, CSharp
.BracketedArgumentList(index.Arguments)));
}