Is there anyway I can iterate all the C-level statements in IDA-Pro?

Question

I am trying to iterate all the C statement (could be very coarse-grained, it's fine) in IDA-Pro recovered assembly program.

Suppose I only consider these statements:

State :: =
  | if-else cond;
  | loop;
  | assignment;
  | function call
  | return
  | {s1; s2; s3 ...}

And after some quick search, I know that there are some (third-party) plugins that can help to identify some C control-flow structure, and I list some of them below:

if-else cond : N/A

loop : link1 link2 link3

So my questions are:

1. Is there any plugins that can recover if/else statement? It looks easier than loop, but I just cannot find a well-developed way to recover the statement.

2. Is there anyway/api/scripts to iterate C statements in IDA-Pro? Or I have to implement myself?

Ideally it should look like this as this is essentially used in source code analysis... (sorry for this pseudo code, I just want to clarify)

let aux s =
    match s with
    | If e1 b1 b2 -> analyze e1 b1 b2
    | Loop e1 e2 e3 b1 -> analyze e1 e2 e3 b1
    | Assign v1 v2 -> analyze v1 v2 
    | States sl -> List.iter analyze sl
    | ...  in
List.iter aux statement_list
...

Answer 1

1. Is there any plugins that can recover if/else statement? It looks easier than loop, but I just cannot find a well-developed way to recover the statement.

Yes, the Hex-Rays Decompiler recovers if/else statements.

2. Is there anyway/api/scripts to iterate C statements in IDA-Pro? Or I have to implement myself?

Yes, the Hex-Rays SDK allows you to iterate the items (including if-else statements) in a decompilation tree.