029 module qualified phantom states

✓ Passing This code compiles and runs correctly.

Code

~import std/io
~import app/fileops
const std = @import("std");
const File = struct {
    handle: i32,
};
~app/fileops:open(path: "test.txt")
| opened f |> app/fileops:close(file: f) |> std/io:print.ln("File closed successfully")

input.kz

Actual

Opening file: test.txt
Closing file
File closed successfully

Expected output

Opening file: test.txt
Closing file
File closed successfully

Imported Files

// Library module: fileops
// Defines file operations with phantom type states

const std = @import("std");

// File type with phantom states
const File = struct {
    handle: i32,
};

// Open a file - returns opened state
~pub event open { path: []const u8 }
| opened *File<open>

~proc open|zig {
    std.debug.print("Opening file: {s}\n", .{path});
    const allocator = std.heap.page_allocator;
    const f = allocator.create(File) catch unreachable;
    f.* = File{ .handle = 42 };
    return .{ .opened = f };
}

// Close a file - accepts open state, returns closed state
~pub event close { file: *File<open> }

~proc close|zig {
    std.debug.print("Closing file\n", .{});
}

fileops.kz

Test Configuration

MUST_RUN

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