How to get statements for IMethodSymbol?

Question

I'm working on the Code Fix provider for .Net.

I'd like to check method internals, e.g. method statements from IMethodSymbol.

As an example, I have following code on input:

public void DoSomething(string input)
{
    if(input == null)
        throw new InvalidOperationException("!!!!");
}

On the code-fix side I have IMethodSymbol interface, and there are not ability to get method statements, internal nodes, etc. (I'd like to see 'if', condition into the 'if', exception raising, etc).

How can I get it?

Answer 1

Use the DeclaringSyntaxReferences property to get the syntax tree defining the method.

Partial methods will have two nodes.

Methods defined in metadata (referenced assemblies) won't have any.