• BoQsc (31/31) Apr 15 2022 Let's say I have this example program.
• Paul Backus (12/17) Apr 15 2022 You can't do this with any of D's built-in introspection features

BoQsc <vaidas.boqsc gmail.com> writes:

Let's say I have this example program.
I want to get the arguments of all the `some_function();` in the 
whole program.
**Even if the scope of the function call is never executed.** 
(Ex. due to IF statement being negative.)

I tried to use `__traits` but it seems to not gather any 
information about function calls.
Or I'm missing something.


```
import std.stdio;
import std.traits;


void some_function(string argument){}


void main(){
   some_function("someargument1");
   some_function("someargument2");

   if (false){
     some_function("someargument3");
   }


/* __traits allMembers does not print function calls.
  I tried to use allMembers of __traits, but it does not contain 
the function calls.
  Only the functions definitions/declarations inside a module.
*/
foreach(memberss; __traits(allMembers, mixin(__MODULE__))){
		write(" ", isSomeFunction!(mixin(memberss)));
		writeln(" \t", fullyQualifiedName!(mixin(memberss)));
		
	}

```

```
```

Paul Backus <snarwin gmail.com> writes:

On Friday, 15 April 2022 at 18:11:11 UTC, BoQsc wrote:
 Let's say I have this example program.
 I want to get the arguments of all the `some_function();` in 
 the whole program.
 **Even if the scope of the function call is never executed.** 
 (Ex. due to IF statement being negative.)

You can't do this with any of D's built-in introspection features 
(like `__traits`), because those features have no way of looking 
inside functions.

However, you can probably write a program to do this using the 
DMD frontend as a library.

Dub package (use the `dmd:frontend` subpackage): 
https://code.dlang.org/packages/dmd
Documentation: https://dlang.org/library/dmd/frontend.html

Unfortunately the documentation is somewhat incomplete, so you 
may need to spend some time reading the source code to figure out 
how it all works. Don't hesitate to ask if you have any questions.