public Expression CreateReferenceExpression(ResolveContext rc, Location loc)
{
Expression expr = null;
//
// We know the variable name is somewhere in the scope. This generates
// an access expression from current block
//
var pb = rc.CurrentBlock.ParametersBlock;
while (true)
{
if (pb is QueryBlock)
{
for (int i = pb.Parameters.Count - 1; i >= 0; --i)
{
var p = pb.Parameters[i];
if (p.Name == Name)
{
return(pb.GetParameterReference(i, loc));
}
var tp = p as QueryBlock.TransparentParameter;
while (tp != null)
{
if (expr == null)
{
expr = pb.GetParameterReference(i, loc);
}
else
{
expr = new TransparentMemberAccess(expr, tp.Name);
}
if (tp.Identifier == Name)
{
return(new TransparentMemberAccess(expr, Name));
}
if (tp.Parent.Name == Name)
{
return(new TransparentMemberAccess(expr, Name));
}
tp = tp.Parent as QueryBlock.TransparentParameter;
}
}
expr = null;
}
if (pb == block)
{
return(null);
}
pb = pb.Parent.ParametersBlock;
}
}
public Expression CreateReferenceExpression (ResolveContext rc, Location loc)
{
Expression expr = null;
//
// We know the variable name is somewhere in the scope. This generates
// an access expression from current block
//
var pb = rc.CurrentBlock.ParametersBlock;
while (true) {
if (pb is QueryBlock) {
for (int i = pb.Parameters.Count - 1; i >= 0; --i) {
var p = pb.Parameters[i];
if (p.Name == Name)
return pb.GetParameterReference (i, loc);
var tp = p as QueryBlock.TransparentParameter;
while (tp != null) {
if (expr == null)
expr = pb.GetParameterReference (i, loc);
else
expr = new TransparentMemberAccess (expr, tp.Name);
if (tp.Identifier == Name)
return new TransparentMemberAccess (expr, Name);
if (tp.Parent.Name == Name)
return new TransparentMemberAccess (expr, Name);
tp = tp.Parent as QueryBlock.TransparentParameter;
}
}
expr = null;
}
if (pb == block)
return null;
pb = pb.Parent.ParametersBlock;
}
}
//
// Query parameter reference can include transparent parameters
//
protected override Expression GetParameterReferenceExpression (string name, Location loc)
{
Expression expr = base.GetParameterReferenceExpression (name, loc);
if (expr != null)
return expr;
TransparentParameter tp = parameters [0] as TransparentParameter;
while (tp != null) {
if (tp.Identifier == name)
break;
TransparentParameter tp_next = tp.Parent as TransparentParameter;
if (tp_next == null && tp.Parent.Name == name)
break;
tp = tp_next;
}
if (tp != null) {
expr = new SimpleName (parameters[0].Name, loc);
TransparentParameter tp_cursor = (TransparentParameter) parameters[0];
while (tp_cursor != tp) {
tp_cursor = (TransparentParameter) tp_cursor.Parent;
expr = new TransparentMemberAccess (expr, tp_cursor.Name);
}
return new TransparentMemberAccess (expr, name);
}
return null;
}
