243 sweep body reaches enclosing tor input

✓ Passing This code compiles and runs correctly.

Code

// The ECS spelling of param capture: `pos += vel * dt` across several rows.
//
// 690_234 is the CANONICAL pin for this gap — it recorded it first, named the
// branch-binding contrast that proved it mechanical, and carried its own flip
// instruction. This test is the consumer layout of the same shape: two rows,
// real arithmetic, a system tor taking `dt`. Kept deliberately alongside the
// minimal spelling, because the green region around a behaviour is exactly as
// wide as the test that pins it — a moved line break or a second row is a
// different program to the compiler and the same program to its author.
//
// WHAT WAS ACTUALLY WRONG. Not a scope rule and not a design boundary. A tor's
// parameter materializes as `const dt = __koru_event_input.dt;` in the very
// frame that calls the sweeprun, one line above the call. The capture collector
// gathered mid-pipe binds, and gathered event INPUTS only when the host flow
// was a synthesized `__store_sweepbody_` (the nested-sweep case), so a user tor
// never took that branch. Everything else already worked: a sweep arm inside a
// tor body captures a mid-chain bind today, through the same two hops.
//
// The measurement that settled it: the SAME `dt`, the SAME body, reached the
// arm when it arrived as `tick(): dt |> query …` and did not when declared as
// a parameter. One origin, not one scope.
//
// NOT T1. T1 is transplant-purity for a WATCH body — spliced into the store's
// write path and executed wherever a write happens, so it cannot close over its
// declaring scope. A sweep body runs at the sweep site in the caller's frame.
import std/io
import std/store

std/store:new(bodies, capacity: 8) { px: 0[i64], vx: 0[i64] }

std/store:insert(bodies) { px: 0, vx: 1 }
std/store:insert(bodies) { px: 10, vx: 3 }

pub tor integrate { dt: i64 }
integrate = std/store:query(bodies)
! query e |> std/store:stored { e.px: e.px + e.vx * dt }

integrate(dt: 2)

std/store:query(bodies)
! query e |> std/io:print.ln("px {{ e.px:d }}")

input.k

Supporting Files

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px 2
px 16

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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();
  // std/store: plural store 'bodies' created (SoA cell + insert/query/write/take/stripe units); fields px: i64, vx: i64
  static class __koru_store_bodies {
    public static long[] px = new long[8];
    public static long[] vx = new long[8];
    public static long len = 0;
    public static long __koru_brand = -1;
}

  public static class integrate_event {
    public struct Input {
      public long dt;
    }
    public static dynamic handler(Input __koru_input) {
      var dt = __koru_input.dt;
      {
      for (var __koru_si = 0; __koru_si < __koru_store_bodies.len; __koru_si++) {
      main_module.__store_sweepbody_bodies_L37_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.handler(new main_module.__store_sweepbody_bodies_L37_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.Input { dt = dt, __koru_sdix_e_L37 = __koru_si });
      }
      }

      return default;

    }
  }
  public static class __store_insert_bodies_event {
    public struct Input {
      public long px;
      public long vx;
      public long __site_line;
    }
    public static dynamic handler(Input __koru_input) {
      var px = __koru_input.px;
      var vx = __koru_input.vx;
      var __site_line = __koru_input.__site_line;
      if (__koru_store_bodies.len >= 8) throw new global::System.Exception("std/store: store 'bodies' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
      long __koru_new_row = __koru_store_bodies.len;
      __koru_store_bodies.px[__koru_new_row] = px;
      __koru_store_bodies.vx[__koru_new_row] = vx;
      __koru_store_bodies.len += 1;

      return default;

    }
  }
  public static class __store_apply_bodies_event {
    public struct Input {
      public long row;
      public long field;
      public long value_0;
      public long value_1;
    }
    public struct Output {
      public string tag;
      public long px;
      public long vx;
    }
    public static Output handler(Input __koru_input) {
      var row = __koru_input.row;
      var field = __koru_input.field;
      var value_0 = __koru_input.value_0;
      var value_1 = __koru_input.value_1;
      var __koru_r = row;
      switch (field) {
      case 0: { __koru_store_bodies.px[__koru_r] = value_0; return new Output { tag = "px", px = value_0 }; }
      case 1: { __koru_store_bodies.vx[__koru_r] = value_1; return new Output { tag = "vx", vx = value_1 }; }
      }
      throw new global::System.Exception("__store_apply_bodies: field index " + field + " is not a column of store 'bodies'");

      return default;

    }
  }
  public static class __store_write_bodies_event {
    public struct Input {
      public long row;
      public long field;
      public long value_0;
      public long value_1;
    }
    public static dynamic handler(Input __koru_input) {
      var row = __koru_input.row;
      var field = __koru_input.field;
      var value_0 = __koru_input.value_0;
      var value_1 = __koru_input.value_1;
      var result_0 = main_module.__store_apply_bodies_event.handler(new __store_apply_bodies_event.Input { row = (long)(row), field = (long)(field), value_0 = (long)(value_0), value_1 = (long)(value_1)});
      if (result_0.tag == "px") {
        var _auto_6 = result_0.px;
      }
      if (result_0.tag == "vx") {
        var _auto_7 = result_0.vx;
      }

      return default;

    }
  }
  public static class __store_sweepbody_bodies_L37_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event {
    public struct Input {
      public long dt;
      public long __koru_sdix_e_L37;
    }
    public static dynamic handler(Input __koru_input) {
      var dt = __koru_input.dt;
      var __koru_sdix_e_L37 = __koru_input.__koru_sdix_e_L37;
      main_module.__store_write_bodies_event.handler(new __store_write_bodies_event.Input { row = (long)(__koru_sdix_e_L37), field = (long)(0), value_0 = (long)(__koru_store_bodies.px[__koru_sdix_e_L37] + __koru_store_bodies.vx[__koru_sdix_e_L37] * dt), value_1 = (long)(0)});

      return default;

    }
  }
  public static class __store_sweepbody_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event {
    public struct Input {
      public long __koru_srf_e_L42_px;
      public long __koru_sdix_e_L42;
    }
    public static dynamic handler(Input __koru_input) {
      var __koru_srf_e_L42_px = __koru_input.__koru_srf_e_L42_px;
      var __koru_sdix_e_L42 = __koru_input.__koru_sdix_e_L42;
__koru_stdout_write("px " + __koru_str(__koru_srf_e_L42_px) + "\n");

      return default;

    }
  }
  public static class __store_sweeprun_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event {
    public struct Input {
    }
    public static dynamic handler(Input __koru_input) {
      {
      for (var __koru_si = 0; __koru_si < __koru_store_bodies.len; __koru_si++) {
      var __koru_srf_e_L42_px = __koru_store_bodies.px[__koru_si];
      main_module.__store_sweepbody_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.handler(new main_module.__store_sweepbody_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.Input { __koru_srf_e_L42_px = __koru_srf_e_L42_px, __koru_sdix_e_L42 = __koru_si });
      }
      }

      return default;

    }
  }
  public static class std_io_print_ln_event {
    public struct Input {
      public dynamic expr;
      public dynamic invocation;
      public dynamic item;
      public dynamic program;
      public dynamic reporter;
      public dynamic allocator;
    }
    public static dynamic handler(Input __koru_input) {
      var expr = __koru_input.expr;
      var invocation = __koru_input.invocation;
      var item = __koru_input.item;
      var program = __koru_input.program;
      var reporter = __koru_input.reporter;
      var allocator = __koru_input.allocator;
      throw new global::System.Exception("ln: [transform] tor is lowered at compile time and must never be called");

    }
  }
  public static void flow0() {
    {
      var __koru_p_px = (long)(0);
      var __koru_p_vx = (long)(1);
      var __koru_p___site_line = (long)(32);
      if (__koru_store_bodies.len >= 8) throw new global::System.Exception("std/store: store 'bodies' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
      long __koru_new_row = __koru_store_bodies.len;
      __koru_store_bodies.px[__koru_new_row] = __koru_p_px;
      __koru_store_bodies.vx[__koru_new_row] = __koru_p_vx;
      __koru_store_bodies.len += 1;
    }
  }
  public static void flow1() {
    {
      var __koru_p_px = (long)(10);
      var __koru_p_vx = (long)(3);
      var __koru_p___site_line = (long)(33);
      if (__koru_store_bodies.len >= 8) throw new global::System.Exception("std/store: store 'bodies' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
      long __koru_new_row = __koru_store_bodies.len;
      __koru_store_bodies.px[__koru_new_row] = __koru_p_px;
      __koru_store_bodies.vx[__koru_new_row] = __koru_p_vx;
      __koru_store_bodies.len += 1;
    }
  }
  public static void flow2() {
    {
      var __koru_p_dt = (long)(2);
      {
      for (var __koru_si = 0; __koru_si < __koru_store_bodies.len; __koru_si++) {
      main_module.__store_sweepbody_bodies_L37_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.handler(new main_module.__store_sweepbody_bodies_L37_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.Input { dt = __koru_p_dt, __koru_sdix_e_L37 = __koru_si });
      }
      }
    }
  }
  public static void flow3() {
    {
      {
      for (var __koru_si = 0; __koru_si < __koru_store_bodies.len; __koru_si++) {
      var __koru_srf_e_L42_px = __koru_store_bodies.px[__koru_si];
      main_module.__store_sweepbody_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.handler(new main_module.__store_sweepbody_bodies_L42_690_243_sweep_body_reaches_enclosing_tor_input_input_52174b_event.Input { __koru_srf_e_L42_px = __koru_srf_e_L42_px, __koru_sdix_e_L42 = __koru_si });
      }
      }
    }
  }
}

static class Program {
  static void Main() {
    main_module.flow0();
    main_module.flow1();
    main_module.flow2();
    main_module.flow3();
  }
}

output_emitted.cs

Actual

px 2
px 16

Expected output

✓ Zig✓ C#

px 2
px 16

Flows

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

new (bodies, capacity: 8, source: px: 0[i64], vx: 0[i64])

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

insert (bodies, source: px: 0, vx: 1)

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

insert (bodies, source: px: 10, vx: 3)

subflow ~integrate click a branch to expand · @labels scroll to their anchor

query (bodies)

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

integrate (dt: 2)

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

query (bodies)

Test Configuration

MUST_RUN LANGUAGES: zig cs

← 242 brand zero is reserved 244 unary minus before a row reference →