Need to differentiate between TypedParameterExpression and FieldExpression

[Shrp77]

Hi,

I'm writing a custom SQL generator that parses LINQ expressions and turns them into SQL. I'm currently stuck at a point where I need to be able to differentiate between a TypedParameterExpression (internal, base type MemberExpression) and a FieldExpression (internal, base type MemberExpression).

The base LINQ I'm trying to resolve looks something like this:

var mock = new MockCompany();
var mock2 = new MockProgram
{
   Name = "Orange"
}

var query = mock
    .GenerateSelect()
    .Where(m => m.Name == mock2.Name);

When I get to the BinaryExpression, m.Name is a TypedParameterExpression and mock2.Name is a FieldExpression, however I cannot differentiate between them in order to process them differently.

Is there any way I can differentiate between them?