054 scope annotation not loop

✓ Passing This code compiles and runs correctly.

Code

// TEST: @scope annotation blocks discharge even for non-loop events
// STATUS: IMPLEMENTED
// MUST_FAIL: KORU032 - Cannot dispose outer-scope resource inside @scope boundary
//
// The @scope annotation is the source of truth for scope boundaries, not the event name.
// This test verifies that @scope works correctly on ANY event, not just for/while/loop.
//
// Here: Open file, call custom event with @scope branch, try to close inside - ERROR!
//
// Expected: KORU032 error about disposing in wrong scope

~import "$app/fs"

// Custom event that is NOT a loop but has @scope semantics
// (simulating a transaction, callback, or other scoped context)
~pub event with_context {}
| scoped {}
| done {}

~proc with_context {
    return .{ .scoped = .{} };
}

// Open file BEFORE the scoped context
~app.fs:open(path: "test.txt")
| opened f |> with_context()
  | scoped _[@scope] |> app.fs:close(file: f.file)
    | closed |> _
  | done |> _

pub fn main() void {}

input.kz

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: *File[opened!] }

~proc open {
    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 = .{ .file = f } };
}

// Close a file - CONSUMES opened! state (disposes the resource)
~pub event close { file: *File[!opened] }
| closed {}

~proc close {
    std.debug.print("Closing file\n", .{});
    return .{ .closed = .{} };
}

fs.kz

Test Configuration

MUST_FAIL

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