public BoundElementAccessExpression(ElementAccessExpressionSyntax syntax, BoundExpression expression, BoundExpression index, IndexerSymbol indexer)
: base(BoundNodeKind.ElementAccessExpression, syntax)
{
Expression = expression;
Index = index;
Type = indexer.AssociatedType;
}
public IndexerSymbolSignature(IndexerSymbol symbol)
{
Symbol = symbol;
}