public override BoundNode VisitAddressOfOperator(BoundAddressOfOperator node)
{
BoundExpression visitedOperand = this.VisitExpression(node.Operand, ExprContext.Address);
return node.Update(visitedOperand, node.IsFixedStatementAddressOf, node.Type);
}
private void EmitAddressOfExpression(BoundAddressOfOperator expression, bool used)
{
var temp = EmitAddress(expression.Operand, AddressKind.Writeable);
Debug.Assert(temp == null, "If the operand is addressable, then a temp shouldn't be required.");
if (used && !expression.IsFixedStatementAddressOf)
{
// When computing an address to be used to initialize a fixed-statement variable, we have to be careful
// not to convert the managed reference to an unmanaged pointer before storing it. Otherwise the GC might
// come along and move memory around, invalidating the pointer before it is pinned by being stored in
// the fixed variable. But elsewhere in the code we do use a conv.u instruction to convert the managed
// reference to the underlying type for unmanaged pointers, which is the type "unsigned int" (see CLI
// standard, Partition I section 12.1.1.1).
_builder.EmitOpCode(ILOpCode.Conv_u);
}
EmitPopIfUnused(used);
}
internal void Parse(BoundAddressOfOperator boundAddressOfOperator)
{
base.Parse(boundAddressOfOperator);
this.Operand = Deserialize(boundAddressOfOperator.Operand) as Expression;
}
