Re: Traits and functions

[Bauss via Digitalmars-d-learn]

On Saturday, 10 January 2015 at 23:23:52 UTC, Ali Çehreli wrote:

On 01/10/2015 08:21 AM, Bauss wrote:

Is there a way to get all functions within a module using traits? I

tried "allMembers" and it seem to work, but I can't use

"getFunctionAttributes" with it and if I use "getAttributes" then it

won't find any applied attributes.

What I do is having a package module with a staic constructor which loops through "allMembers" and then I want to find functions with a specific attribute. All the members are imported using public imports. However it can find the specific functions, but it does not find the

attributes.

The following program prints both the function attributes and user defined attributes e.g. of foo():

module deneme;

import std.string;
import std.traits;

struct MyAttr
{}

@MyAttr
void foo(int i, double d) pure @nogc nothrow @property
{}

void main()
{
    foreach (m; __traits(allMembers, deneme)) {
        pragma(msg, format("module member: %s", m));

        static if (mixin ("isCallable!" ~ m)) {
            pragma(msg, format("%s is callable", m));

            foreach (funcAttr;

mixin (format("__traits(getFunctionAttributes, %s)", m))) { pragma(msg, format(" function attribute: %s", funcAttr));

            }

foreach (attr; mixin (format("__traits(getAttributes, %s)", m))) {

                static if (is (attr == MyAttr)) {

pragma(msg, format(" uda: %s", attr.stringof));

                }
            }
        }
    }
}

Ali

Thank you this was exactly what I was looking for!