const std = @import("std");
const emacs = @import("emacs");

// Every module needs to call `module_init` in order to register with Emacs.
comptime {
    emacs.module_init(@This());
}

fn add(e: emacs.Env, v1: emacs.Value, v2: emacs.Value) emacs.Value {
    const a = e.extractInteger(v1);
    const b = e.extractInteger(v2);
    return e.makeInteger(a + b);
}

// Emacs dynamic module entrypoint
pub fn init(env: emacs.Env) c_int {
    env.defineFunc(
        "zig-add",
        add,
        // This make `zig-add` interactive.
        .{ .interactive_spec = "nFirst number: \nnSecond number: " },
    );

    return 0;
}