011 auto discharge multiple

✓ Passing This code compiles and runs correctly.

Code

// TEST: Auto-dispose with multiple consumers - MUST FAIL
// STATUS: PENDING IMPLEMENTATION
// MUST_FAIL: Multiple disposal options
//
// When multiple events consume the same obligation [!state],
// the compiler cannot auto-choose - user must be explicit.
//
// Here: Both close() and abandon() consume *File[!opened]
// Compiler should error: "Multiple disposal options for [opened!]: close, abandon"
//
// To fix, user would write:
//   | opened f |> app.fs:close(file: f.file)
//       | closed |> _
// OR:
//   | opened f |> app.fs:abandon(file: f.file)
//       | abandoned |> _

~import "$app/fs"

// This should FAIL - two disposal options, be explicit!
~app.fs:open(path: "test.txt")
| opened _ |> _

pub fn main() void {}

input.kz

Error Verification

Expected Error Pattern

Backend should fail - no disposal event available or multiple disposal options

Actual Compiler Output

error[KORU030]: Resource '__type_ref' [opened!] has multiple disposal options: close, abandon. Discharge explicitly.
  --> auto_discharge:22:0

❌ Compiler coordination error: Auto-discharge failed (multiple disposal options or no disposal event)
error: CompilerCoordinationFailed
/Users/larsde/src/koru/tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/330_011_auto_discharge_multiple/backend.zig:9439:17: 0x104aaa4af in emit (backend)
                return error.CompilerCoordinationFailed;
                ^
/Users/larsde/src/koru/tests/regression/300_ADVANCED_FEATURES/330_PHANTOM_TYPES/330_011_auto_discharge_multiple/backend.zig:9523:28: 0x104aab2b7 in main (backend)
    const generated_code = try RuntimeEmitter.emit(compile_allocator, final_ast);
                           ^

Imported Files

// Library module: fs
// Multiple disposal events - requires explicit choice

const std = @import("std");

const File = struct { handle: i32 };

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

~proc open {
    const f = std.heap.page_allocator.create(File) catch unreachable;
    f.* = File{ .handle = 42 };
    return .{ .opened = f };
}

// Close - saves any changes before closing
~pub event close { file: *File[!opened] }
| closed

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

// Abandon - discards any changes
~pub event abandon { file: *File[!opened] }
| abandoned

~proc abandon {
    std.debug.print("Abandoning file (discarding changes)\n", .{});
    return .{ .abandoned = .{} };
}

fs.kz

Test Configuration

MUST_FAIL

Expected Error:

Multiple disposal options

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