042 named expression params

// Test 310_042: Named Expression Parameters
//
// This test documents that multiple named Expression parameters in transforms
// are not yet fully supported. See README.md for details.

const std = @import("std");

~[comptime]

// Event with implicit Expression + named Expression parameter
~[keyword|comptime|transform]pub event operation {
    expr: Expression,
    guard: Expression,
    program: *const Program,
    allocator: std.mem.Allocator
}
| transformed { program: *const Program }

~proc operation {
    // Both expr and guard should be available as []const u8
    std.debug.print("[operation] expr='{s}' guard='{s}'\n", .{ expr, guard });
    return .{ .transformed = .{ .program = program } };
}

// Usage: implicit expr + named guard Expression
~operation(1..N, guard: i > 100)

// Scaffold to make it compile
~event dummy {}
| done {}

~proc dummy {
    std.debug.print("dummy\n", .{});
    return .{ .done = .{} };
}

~dummy()
| done |> _