038 cleanup obligation satisfied

✓ Passing This code compiles and runs correctly.

Code

~import app/fs
~app/fs:open(path: "test.txt")
| opened f |> app/fs:close(file: f)

input.kz

Actual

Opening file: test.txt
Closing file

Expected output

Opening file: test.txt
Closing file

Imported Files

// Library module: fs
// Defines filesystem operations with cleanup obligations

const std = @import("std");

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

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

~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 - CONSUMES opened! state (disposes the resource)
~pub event close { file: *File<!opened> }

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

fs.kz

Test Configuration

MUST_RUN

← 037 default discharge must be void 039 transition metatype →