✓
Passing This code compiles and runs correctly.
Code
// Test 624: Destination Scoping with Wildcards
// Validates that destination patterns match visible events in scope
// Pattern tap(* -> file.write) observes ALL sources calling file.write
const std = @import("std");
~import std/taps
~tor file.read {}
~proc file.read|zig {
}
~tor file.write {}
~proc file.write|zig {
std.debug.print("Writing\n", .{});
}
~tor network.fetch {}
~proc network.fetch|zig {
}
~tor logger { caller: string }
~proc logger|zig {
std.debug.print("write called from: {s}\n", .{caller});
}
// Observe ALL sources calling file.write
~tap(* -> file.write)
| Profile p |> logger(caller: p.source)
~file.read() |> file.write() |> network.fetch() |> file.write()
Supporting Files
~proc file.read|cs {
}
~proc file.write|cs {
__koru_stdout_write("Writing\n");
}
~proc network.fetch|cs {
}
~proc logger|cs {
__koru_stdout_write($"write called from: {caller}\n");
}Actual
write called from: input:file.read
Writing
write called from: input:network.fetch
Writing
Expected output
✓ Zig✓ C#write called from: input:file.read
Writing
write called from: input:network.fetch
Writing
Emitted Zig source
// Access compiler flags via the per-user compiler_env module
const CompilerEnv = @import("compiler_env").CompilerEnv;
pub const panic = if (@import("builtin").mode == .Debug)
@import("std").debug.FullPanic(@import("std").debug.defaultPanic)
else
@import("std").debug.simple_panic;
const __koru_bare = struct {
extern fn posix_memalign(memptr: *?*anyopaque, alignment: usize, size: usize) c_int;
extern fn free(ptr: ?*anyopaque) void;
fn bareAlloc(_: *anyopaque, len: usize, alignment: @import("std").mem.Alignment, _: usize) ?[*]u8 {
var p: ?*anyopaque = null;
const a = @max(alignment.toByteUnits(), @sizeOf(usize));
if (posix_memalign(&p, a, len) != 0) return null;
return @ptrCast(p);
}
fn bareResize(_: *anyopaque, _: []u8, _: @import("std").mem.Alignment, _: usize, _: usize) bool { return false; }
fn bareRemap(_: *anyopaque, _: []u8, _: @import("std").mem.Alignment, _: usize, _: usize) ?[*]u8 { return null; }
fn bareFree(_: *anyopaque, memory: []u8, _: @import("std").mem.Alignment, _: usize) void { free(@ptrCast(memory.ptr)); }
const vtable = @import("std").mem.Allocator.VTable{ .alloc = bareAlloc, .resize = bareResize, .remap = bareRemap, .free = bareFree };
const allocator = @import("std").mem.Allocator{ .ptr = undefined, .vtable = &vtable };
};
const __koru_backing = if (@import("builtin").link_libc) @import("std").heap.c_allocator else if (@import("builtin").os.tag == .freestanding) __koru_bare.allocator else @import("std").heap.page_allocator;
var __koru_leak_count: @import("std").atomic.Value(usize) = .init(0);
fn __koru_alloc(ctx: *anyopaque, len: usize, alignment: @import("std").mem.Alignment, ret_addr: usize) ?[*]u8 {
_ = ctx;
const r = __koru_backing.rawAlloc(len, alignment, ret_addr);
if (comptime @import("builtin").mode == .Debug) {
if (r != null) _ = __koru_leak_count.fetchAdd(1, .monotonic);
}
return r;
}
fn __koru_resize(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, new_len: usize, ret_addr: usize) bool {
_ = ctx;
return __koru_backing.rawResize(memory, alignment, new_len, ret_addr);
}
fn __koru_remap(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, new_len: usize, ret_addr: usize) ?[*]u8 {
_ = ctx;
return __koru_backing.rawRemap(memory, alignment, new_len, ret_addr);
}
fn __koru_free(ctx: *anyopaque, memory: []u8, alignment: @import("std").mem.Alignment, ret_addr: usize) void {
_ = ctx;
__koru_backing.rawFree(memory, alignment, ret_addr);
if (comptime @import("builtin").mode == .Debug) {
_ = __koru_leak_count.fetchSub(1, .monotonic);
}
}
const __koru_vtable = @import("std").mem.Allocator.VTable{ .alloc = __koru_alloc, .resize = __koru_resize, .remap = __koru_remap, .free = __koru_free };
pub fn koru_allocator() @import("std").mem.Allocator {
return .{ .ptr = undefined, .vtable = &__koru_vtable };
}
pub inline fn __koru_intcast(comptime T: type, x: anytype) T {
if (comptime (@import("builtin").mode == .Debug or @import("builtin").mode == .ReleaseSafe))
return @as(T, @intCast(x));
const dst = @typeInfo(T);
const src = @typeInfo(@TypeOf(x));
if (comptime (dst == .int and src == .int and dst.int.bits == src.int.bits and dst.int.signedness != src.int.signedness))
return @as(T, @bitCast(x));
return @as(T, @intCast(x));
}
pub fn koru_leak_check() void {
if (comptime @import("builtin").mode != .Debug) return;
if (__koru_leak_count.load(.acquire) == 0) return;
if (comptime @import("builtin").target.os.tag == .freestanding) {
if (comptime @import("builtin").cpu.arch == .wasm32 or @import("builtin").cpu.arch == .wasm64) {
@panic("KORU LEAK CHECK FAILED: the produced program leaked");
} else {
const __klc = struct { extern var stdout: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; };
var __lb: [128]u8 = undefined;
const __lm = "KORU LEAK CHECK FAILED: allocations still outstanding at end of run: ";
@memcpy(__lb[0..__lm.len], __lm);
var __ln: usize = __lm.len;
var __lv = __koru_leak_count.load(.acquire);
var __ld: [20]u8 = undefined;
var __lk: usize = 0;
while (__lv > 0) : (__lk += 1) { __ld[__lk] = @intCast('0' + __lv % 10); __lv /= 10; }
for (0..__lk) |__li| { __lb[__ln] = __ld[__lk - 1 - __li]; __ln += 1; }
__lb[__ln] = '\n'; __ln += 1; __lb[__ln] = 0;
_ = __klc.fputs(@as([*:0]const u8, @ptrCast(&__lb)), __klc.stdout);
@trap();
}
} else {
@import("std").debug.print("KORU LEAK CHECK FAILED: the produced program leaked (trace above)\n", .{});
@import("std").process.exit(1);
}
}
pub const main_module = struct {
const std = @import("std");
pub const file_read_event = struct {
pub const Input = struct {
};
pub const Output = void;
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: file.read [tests/regression/300_ADVANCED_FEATURES/310_COMPTIME/310_026_destination_scoping/input.kz:11]
_ = &__koru_event_input;
}
};
pub const file_write_event = struct {
pub const Input = struct {
};
pub const Output = void;
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: file.write [tests/regression/300_ADVANCED_FEATURES/310_COMPTIME/310_026_destination_scoping/input.kz:16]
_ = &__koru_event_input;
std.debug.print("Writing\n", .{});
}
};
pub const network_fetch_event = struct {
pub const Input = struct {
};
pub const Output = void;
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: network.fetch [tests/regression/300_ADVANCED_FEATURES/310_COMPTIME/310_026_destination_scoping/input.kz:22]
_ = &__koru_event_input;
}
};
pub const logger_event = struct {
pub const Input = struct {
caller: []const u8,
};
pub const Output = void;
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: logger [tests/regression/300_ADVANCED_FEATURES/310_COMPTIME/310_026_destination_scoping/input.kz:27]
const caller = __koru_event_input.caller;
_ = &caller;
_ = &__koru_event_input;
std.debug.print("write called from: {s}\n", .{caller});
}
};
// >>> FLOW: tests/regression/300_ADVANCED_FEATURES/310_COMPTIME/310_026_destination_scoping/input.kz:35 ~input:file.read()
pub fn flow0() void {
_ = main_module.file_read_event.handler(.{ });
{
const _profile_b078962bb8b441c7_2 = taps.Profile{
.source = "input:file.read",
.destination = "input:file.write",
.branch = "__void",
.timestamp_ns = __koru_std.time.nanoTimestamp(),
};
_ = &_profile_b078962bb8b441c7_2;
const result_1 = main_module.logger_event.handler(.{ .caller = _profile_b078962bb8b441c7_2.source });
_ = &result_1;
const result_2 = main_module.file_write_event.handler(.{ });
_ = &result_2;
const result_3 = main_module.network_fetch_event.handler(.{ });
_ = &result_3;
{
const _profile_b078962bb8b441c7_3 = taps.Profile{
.source = "input:network.fetch",
.destination = "input:file.write",
.branch = "__void",
.timestamp_ns = __koru_std.time.nanoTimestamp(),
};
_ = &_profile_b078962bb8b441c7_3;
const result_4 = main_module.logger_event.handler(.{ .caller = _profile_b078962bb8b441c7_3.source });
_ = &result_4;
_ = main_module.file_write_event.handler(.{ });
}
}
}
pub fn koru_start_flow() void {
const result_0 = koru_koru.start_event.handler(.{ });
const result_0_done = result_0.done;
_ = &result_0_done;
}
pub fn koru_end_flow() void {
const result_0 = koru_koru.end_event.handler(.{ });
const result_0_done = result_0.done;
_ = &result_0_done;
}
};
pub const koru_koru = struct {
pub const start_event = struct {
pub const Input = struct {
};
pub const Output = union(enum(u8)) {
done: struct {
},
};
pub fn handler(__koru_event_input: @This().Input) @This().Output {
_ = &__koru_event_input;
return .{ .done = .{} };
}
};
pub const end_event = struct {
pub const Input = struct {
};
pub const Output = union(enum(u8)) {
done: struct {
},
};
pub fn handler(__koru_event_input: @This().Input) @This().Output {
_ = &__koru_event_input;
return .{ .done = .{} };
}
};
};
const __koru_std = @import("std");
// Taps namespace - compiler infrastructure for event observation
const taps = struct {
// Profile meta-type - string-based with timing (32+ bytes)
// For performance profiling and timeline reconstruction
pub const Profile = struct {
source: []const u8, // interned string
destination: ?[]const u8, // interned string (null for terminal)
branch: []const u8, // interned string
timestamp_ns: i128, // nanoseconds since epoch (runtime capture)
};
};
pub fn main() void {
main_module.koru_start_flow();
main_module.flow0();
main_module.koru_end_flow();
if (comptime @import("builtin").mode == .Debug) koru_leak_check();
}
test {
@import("std").testing.refAllDeclsRecursive(@This());
}
Emitted C# source
static class main_module {
public static void __koru_stdout_write(dynamic s) => global::System.Console.Out.Write(s);
public static void __koru_stderr_write(dynamic s) => global::System.Console.Error.Write(s);
// The mutable handle carrier — `*String`-style resources are
// `new __KoruBox { data = … }` because C# anonymous types are
// read-only: `s.data = …` (std/string append/clear, handle
// mutation generally) needs a settable member.
public class __KoruBox { public dynamic data; }
// Textification for `{{ … }}` operands: C# bool ToStrings as
// `True` where Koru prints `true`, and the operand's static type
// is unknown at this boundary — a `(x) is bool` inline test would
// be a compile error on statically-typed operands instead. Generic
// on purpose: `dynamic` boxed every value-type operand — measured
// ~1s/10M elements on 012_threat_scanner — while T specializes to
// the operand's own ToString() with no box.
public static string __koru_str<T>(T v) => v is bool b ? (b ? "true" : "false") : v?.ToString();
public static class file_read_event {
public struct Input {
}
public static dynamic handler(Input __koru_input) {
return default;
}
}
public static class file_write_event {
public struct Input {
}
public static dynamic handler(Input __koru_input) {
__koru_stdout_write("Writing\n");
return default;
}
}
public static class network_fetch_event {
public struct Input {
}
public static dynamic handler(Input __koru_input) {
return default;
}
}
public static class logger_event {
public struct Input {
public string caller;
}
public static dynamic handler(Input __koru_input) {
var caller = __koru_input.caller;
__koru_stdout_write($"write called from: {caller}\n");
return default;
}
}
public static class koru_start_event {
public struct Input {
}
public struct Output {
public string tag;
public dynamic done;
}
public static Output handler(Input __koru_input) => new Output { tag = "done" };
}
public static class koru_end_event {
public struct Input {
}
public struct Output {
public string tag;
public dynamic done;
}
public static Output handler(Input __koru_input) => new Output { tag = "done" };
}
public static void flow0() {
{
}
{
var _profile_b078962bb8b441c7_2 = new { source = "input:file.read", destination = "input:file.write", branch = "__void", timestamp_ns = global::System.DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() * 1000000L };
{
var __koru_p_caller = (string)(_profile_b078962bb8b441c7_2.source);
__koru_stdout_write($"write called from: {__koru_p_caller}\n");
}
{
__koru_stdout_write("Writing\n");
}
{
}
{
var _profile_b078962bb8b441c7_3 = new { source = "input:network.fetch", destination = "input:file.write", branch = "__void", timestamp_ns = global::System.DateTimeOffset.UtcNow.ToUnixTimeMilliseconds() * 1000000L };
{
var __koru_p_caller = (string)(_profile_b078962bb8b441c7_3.source);
__koru_stdout_write($"write called from: {__koru_p_caller}\n");
}
{
__koru_stdout_write("Writing\n");
}
}
}
}
public static void flow1() {
main_module.koru_start_event.handler(new koru_start_event.Input { });
}
public static void flow2() {
main_module.koru_end_event.handler(new koru_end_event.Input { });
}
}
static class Program {
static void Main() {
main_module.flow1();
main_module.flow0();
main_module.flow2();
}
}
Flows
flow ~tap click a branch to expand · @labels scroll to their anchor
tap (* -> file.write)
flow ~file.read click a branch to expand · @labels scroll to their anchor
file.read
Test Configuration
MUST_RUN LANGUAGES: zig cs