031 tap binding substitution

✗ Failing This test is currently failing.

Failed: output

Failure Output

🎯 Compiler coordination: Passes: 20 (flow-based: elaborate, analysis, emission)

Code

~import std/taps
~import app/fs
~tap(app/fs:open -> *)
| opened f |> app/fs:log-open(f.handle)
~app/fs:open(path: "test.txt")

input.kz

Actual

Opening file
Closing file (auto-discharged)

Expected output

Opening file
TAP: Observed file open!
Closing file (auto-discharged)

Flows

flow ~tap click a branch to expand · @labels scroll to their anchor

tap (app/fs: open -> *)

flow ~open click a branch to expand · @labels scroll to their anchor

open (path: "test.txt")

Imported Files

// Library module: fs
// Phantom-tracked file operations for testing tap binding substitution

const std = @import("std");

const File = struct { handle: i32 };

// Open a file - returns opened! state (requires cleanup)
~pub tor open { path: string } -> *File<opened!>

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

// Close - the ONLY consumer of <!opened>
~pub tor close { file: *File<!opened> }

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

// A logging event for taps - receives the file handle from tap binding
~pub tor log-open { handle: i32 }

~proc log-open|zig {
    std.debug.print("TAP: Observed file open!\n", .{});
}

fs.kz

Test Configuration

MUST_RUN

← 030 taps with auto discharge 032 nested for scopes →