017 tor param named zig keyword

// Pins that a Koru parameter name is spelled into the emitted Zig safely, even
// when it collides with a Zig keyword.
//
// `align` is a legal Koru identifier and a reserved word in Zig, so the emitted
// `const align = ...` is a Zig syntax error. Nothing in Koru's surface says the
// name is unavailable, and `--check` passes — the refusal arrives from the Zig
// compiler, quoting generated code, naming a line the author never wrote.
//
// The fix is at the emission site (`@"align"`), not in the author's surface: a
// library author cannot be expected to know which identifiers Zig has taken, and
// renaming the surface to suit the backend is the route-around this repo bans.
//
// Sibling: 230_018 pins the same disease for Zig's primitive TYPE names, which
// fails with a different diagnostic and can be fixed independently.
//
// Control: rename the parameter and nothing else, and the program prints 16.

const std = @import("std");

~import std/io

~pub tor reserve { align: u32 } -> u32

~proc reserve|zig {
    return align * 2;
}

~reserve(align: 8): got |> std/io:print.ln("got {{ got:d }}")