include_tt 1.1.1

Macros for ultra-flexible injection of token trees, literals, or binary data into Rust code from external files during compilation.
Documentation 
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macro_rules! new_module {
	[ @($const_t: ident) : [ $($path:tt)* ]; ] => {
		include_tt::inject! {
			#[allow(dead_code)]
			#[allow(non_upper_case_globals)]
			pub mod my_module {
				pub const a: usize = 0;
				pub const b: usize = 10;

				// The `#TRACK_FILES:` marker allows the macro to add additional
				// instructions that tell the compiler which files to track so that it can
				// recompile the macro if they change. This is completely optional, but without
				// it tracking will not work.
				#TRACK_FILES:

				pub const $const_t: (usize, usize) = (#tt($($path)*));
			}
		}
	};
}

fn main() {
    // we created a module "my_module" and a constant "T" containing (a, b).
    //
    // if you need to change, for example, to (b,a) or substitute constant values,
    // we will only change the contents of the file "for_examples/full.tt"!
    new_module! {
        @(T): [examples / "full" . t 't']; // this file contains "a, b", see "for_examples/full.tt"
    }
    //assert_eq!(my_module::T, (0, 10));
}