✓
Passing This code compiles and runs correctly.
Code
// THE PER-STORE HANDLE GATE — emitted shape. A plural store that never
// surfaces a row handle carries no handle machinery: no __koru_hslot_*
// arrays on the cell, no __koru_row_of/__koru_resolve/__koru_handle_of
// methods, no __store_take_ unit, and an insert that is capacity check +
// column writes + len++.
//
// `lean` qualifies on every clause — its inserts discard `| row` and its
// one sweep reads only `e.<field>` projections. `kept` fails the gate twice
// over (`| row k` binds the handle AND `kept[k]` addresses through it), so
// this one program pins both halves of the decision against the emitted
// backend: the lean cell and insert carry no `__koru_hslot` text at all,
// while the kept store's machinery is unchanged.
import std/io
import std/store
std/store:new(lean, capacity: 8) { hp: i64 }
std/store:new(kept, capacity: 8) { hp: i64 }
std/store:insert(lean) { hp: 1 }
| row _ |> _
| full |> _
std/store:insert(lean) { hp: 2 }
| row _ |> _
| full |> _
std/store:insert(kept) { hp: 3 }
| row k |> std/store:take(kept[k])
| item gone |> std/io:print.ln("took {{ gone.hp:d }}")
std/store:query(lean)
! query e |> std/io:print.ln("lean {{ e.hp:d }}")
Actual
took 3
lean 1
lean 2
Expected output
✓ Zig✓ JavaScript✓ C#took 3
lean 1
lean 2
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 {
// std/store: plural store 'lean' created (SoA cell + insert/query/write/take/stripe units); fields hp: i64
// std/store: plural store 'kept' created (SoA cell + insert/query/write/take/stripe units); fields hp: i64
// >>> FLOW: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:20 ~input:__store_insertf_lean()
pub fn flow0() void {
const result_0 = main_module.__store_insertf_lean_event.handler(.{ .hp = 1, .__site_line = 20 });
switch (result_0) {
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:21 | row _auto_6 |>
.row => |_| {
},
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:22 | full |>
.full => {
},
}
}
// >>> FLOW: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:23 ~input:__store_insertf_lean()
pub fn flow1() void {
const result_0 = main_module.__store_insertf_lean_event.handler(.{ .hp = 2, .__site_line = 23 });
switch (result_0) {
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:24 | row _auto_7 |>
.row => |_| {
},
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:25 | full |>
.full => {
},
}
}
// >>> FLOW: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:27 ~input:__store_inserth_kept()
pub fn flow2() void {
const result_0 = main_module.__store_inserth_kept_event.handler(.{ .hp = 3, .__site_line = 27 });
const k = result_0.row;
const result_1 = main_module.__store_take_kept_event.handler(.{ .row = k });
_ = &result_1;
switch (result_1) {
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:29 | item gone |>
.item => |gone| {
(struct { fn __kout(__fd: i32, __b: []const u8) void { if (@import("builtin").os.tag == .freestanding) { const __kc = struct { extern var stdout: ?*anyopaque; extern var stderr: ?*anyopaque; extern fn fputs(__s: [*:0]const u8, __st: ?*anyopaque) c_int; }; var __kt: [4096]u8 = undefined; for (0..(__b.len + __kt.len - 2) / (__kt.len - 1)) |__ki| { const __kn = @min(__kt.len - 1, __b.len - __ki * (__kt.len - 1)); @memcpy(__kt[0..__kn], __b[__ki * (__kt.len - 1)..][0..__kn]); __kt[__kn] = 0; @import("std").mem.doNotOptimizeAway(__kc.fputs(@as([*:0]const u8, @ptrCast(&__kt)), if (__fd == 2) __kc.stderr else __kc.stdout)); } } else { @import("std").mem.doNotOptimizeAway(@import("std").posix.write(__fd, __b) catch @as(usize, 0)); } } fn __kw(comptime __f: []const u8, __a: anytype) void { var __kb: [65536]u8 = undefined; const __ks = @import("std").fmt.bufPrint(&__kb, __f, __a) catch __kb[0..0]; __kout(1, __ks); } }).__kw("took {d}\n", .{gone.hp});
},
// >>> BRANCH: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:28 | empty _auto_8 |>
.empty => {
@panic("input:__store_take_kept: unhandled panic branch 'empty' fired at runtime");
},
}
}
// >>> FLOW: tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:31 ~input:__store_sweeprun_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc()
pub fn flow3() void {
_ = main_module.__store_sweeprun_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_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;
}
const __KoruStoreT_lean = struct {
hp: [8]i64 = undefined,
len: usize = 0,
};
var __koru_store_lean: __KoruStoreT_lean = .{};
const __KoruStoreRow_lean = struct { hp: i64 };
pub const __store_insertf_lean_event = struct {
pub const Input = struct {
hp: i64,
__site_line: i64,
};
pub const Output = union(enum(u8)) {
row: i64,
full: struct {
},
};
pub inline fn handler(__koru_event_input: @This().Input) @This().Output {
return __koru_handler_impl(__koru_event_input.hp, __koru_event_input.__site_line);
}
fn __koru_handler_impl(__koru_p_0: i64, __koru_p_1: i64) @This().Output {
const __koru_event_input: @This().Input = .{ .hp = __koru_p_0, .__site_line = __koru_p_1 };
// >>> PROC: __store_insertf_lean [tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:17]
const hp = __koru_event_input.hp;
const __site_line = __koru_event_input.__site_line;
_ = &hp;
_ = &__site_line;
_ = &__koru_event_input;
if (__koru_store_lean.len >= 8) return .{ .full = .{} };
if (__koru_store_lean.len >= 8) @panic("std/store: store 'lean' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
const __koru_new_row = __koru_store_lean.len;
__koru_store_lean.hp[__koru_new_row] = hp;
__koru_store_lean.len += 1;
return .{ .row = @as(i64, @intCast(__koru_new_row)) };
}
};
pub const __store_apply_lean_event = struct {
pub const Input = struct {
row: usize,
field: i64,
value_0: i64,
};
pub const Output = union(enum(u8)) {
hp: i64,
};
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: __store_apply_lean [tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:17]
const row = __koru_event_input.row;
const field = __koru_event_input.field;
const value_0 = __koru_event_input.value_0;
_ = &row;
_ = &field;
_ = &value_0;
_ = &__koru_event_input;
const __koru_r: usize = row;
return switch (field) {
0 => blk: { __koru_store_lean.hp[__koru_r] = value_0; break :blk .{ .hp = value_0 }; },
else => unreachable,
};
}
};
const __KoruStoreT_kept = struct {
hp: [8]i64 = undefined,
len: usize = 0,
__koru_hslot_row: [8]usize = undefined,
__koru_hslot_gen: [8]u32 = [_]u32{0} ** 8,
__koru_row_hslot: [8]usize = undefined,
__koru_hslot_free: [8]usize = undefined,
__koru_hslot_free_len: usize = 0,
__koru_hslot_next: usize = 0,
// `__koru_ident` — no removal has run, so slot == dense row
// for every live row; mint/resolve skip both table loads, the
// first take materialises and flips it, drain and clear
// re-arm it by resetting the slot space. `__koru_gen0` — no gen
// bump has ever run; it implies slot == row for every minted
// slot, so resolve sheds the gen load entirely.
__koru_ident: bool = true, __koru_gen0: bool = true,
const __koru_brand: u32 = 2;
fn __koru_materialize(self: *@This()) void {
if (!self.__koru_ident) return;
for (0..self.len) |i| { self.__koru_hslot_row[i] = i; self.__koru_row_hslot[i] = i; }
self.__koru_ident = false;
}
fn __koru_row_of(self: *const @This(), h: i64) ?usize {
if (h < 0) return null;
const u = @as(u64, @bitCast(h));
const slot32 = @as(u32, @truncate(u));
if ((slot32 >> 24) != __koru_brand) return null;
const slot = @as(usize, @intCast(slot32 & 0xFFFFFF));
if (slot >= self.__koru_hslot_next) return null;
if (self.__koru_gen0) { if (u >> 32 != 0) return null; return slot; }
if (@as(u32, @truncate(u >> 32)) != self.__koru_hslot_gen[slot]) return null;
if (self.__koru_ident) return slot;
const __koru_r = self.__koru_hslot_row[slot];
if (__koru_r >= self.len) return null;
return __koru_r;
}
// DO NOT "simplify" into one pass — pre-check + row_of tail
// call keeps resolve under the inline threshold; callers
// inline BOTH and LLVM CSEs the duplicate checks into one
// validation in machine code. A flat single pass crossed
// the threshold: +57% read_handle, +2.6x write_handle
// (007 board, 2026-09-26). Shape, not count.
fn __koru_resolve(self: *const @This(), h: i64) usize {
if (h >= 0) {
const u = @as(u64, @bitCast(h));
const slot32 = @as(u32, @truncate(u));
if ((slot32 >> 24) != __koru_brand) @panic("std/store: 'kept[...]' does not address a row - the value is not a handle this store issued (handles come from `| row` and row cursors)");
const slot = @as(usize, @intCast(slot32 & 0xFFFFFF));
if (self.__koru_gen0) {
if (u >> 32 != 0 and slot < self.__koru_hslot_next) @panic("std/store: stale row handle into store 'kept' - the row it addressed was removed (stale-handle trap pinned at 690_115)");
} else if (slot < self.__koru_hslot_next and @as(u32, @truncate(u >> 32)) != self.__koru_hslot_gen[slot]) @panic("std/store: stale row handle into store 'kept' - the row it addressed was removed (stale-handle trap pinned at 690_115)");
}
return self.__koru_row_of(h) orelse @panic("std/store: 'kept[...]' does not address a row - the value is not a handle this store issued (handles come from `| row` and row cursors)");
}
fn __koru_handle_of(self: *const @This(), dense: usize) i64 {
if (self.__koru_gen0) return @as(i64, @intCast(dense | (@as(usize, __koru_brand) << 24)));
var slot = dense;
if (!self.__koru_ident) slot = self.__koru_row_hslot[dense];
return @as(i64, @intCast(slot | (@as(usize, __koru_brand) << 24))) | (@as(i64, @intCast(self.__koru_hslot_gen[slot])) << 32);
}
};
var __koru_store_kept: __KoruStoreT_kept = .{};
const __KoruStoreRow_kept = struct { hp: i64 };
pub const __store_inserth_kept_event = struct {
pub const Input = struct {
hp: i64,
__site_line: i64,
};
pub const Output = union(enum(u8)) {
row: i64,
};
pub inline fn handler(__koru_event_input: @This().Input) @This().Output {
return __koru_handler_impl(__koru_event_input.hp, __koru_event_input.__site_line);
}
fn __koru_handler_impl(__koru_p_0: i64, __koru_p_1: i64) @This().Output {
const __koru_event_input: @This().Input = .{ .hp = __koru_p_0, .__site_line = __koru_p_1 };
// >>> PROC: __store_inserth_kept [tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:18]
const hp = __koru_event_input.hp;
const __site_line = __koru_event_input.__site_line;
_ = &hp;
_ = &__site_line;
_ = &__koru_event_input;
if (__koru_store_kept.len >= 8) @panic("std/store: store 'kept' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
const __koru_new_row = __koru_store_kept.len;
const __koru_hslot = if (__koru_store_kept.__koru_hslot_free_len > 0) blk_hs: {
__koru_store_kept.__koru_hslot_free_len -= 1;
break :blk_hs __koru_store_kept.__koru_hslot_free[__koru_store_kept.__koru_hslot_free_len];
} else blk_hs: {
const __koru_hn = __koru_store_kept.__koru_hslot_next;
__koru_store_kept.__koru_hslot_next += 1;
break :blk_hs __koru_hn;
};
if (!__koru_store_kept.__koru_ident) {
__koru_store_kept.__koru_hslot_row[__koru_hslot] = __koru_new_row;
__koru_store_kept.__koru_row_hslot[__koru_new_row] = __koru_hslot;
}
__koru_store_kept.hp[__koru_new_row] = hp;
__koru_store_kept.len += 1;
return .{ .row = __koru_store_kept.__koru_handle_of(__koru_new_row) };
}
};
pub const __store_apply_kept_event = struct {
pub const Input = struct {
row: usize,
field: i64,
value_0: i64,
};
pub const Output = union(enum(u8)) {
hp: i64,
};
pub fn handler(__koru_event_input: @This().Input) @This().Output {
// >>> PROC: __store_apply_kept [tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:18]
const row = __koru_event_input.row;
const field = __koru_event_input.field;
const value_0 = __koru_event_input.value_0;
_ = &row;
_ = &field;
_ = &value_0;
_ = &__koru_event_input;
const __koru_r: usize = row;
return switch (field) {
0 => blk: { __koru_store_kept.hp[__koru_r] = value_0; break :blk .{ .hp = value_0 }; },
else => unreachable,
};
}
};
pub const __store_take_kept_event = struct {
pub const Input = struct {
row: i64,
};
pub const Output = union(enum(u8)) {
item: __KoruStoreRow_kept,
empty: struct {
},
};
pub inline fn handler(__koru_event_input: @This().Input) @This().Output {
return __koru_handler_impl(__koru_event_input.row);
}
fn __koru_handler_impl(__koru_p_0: i64) @This().Output {
const __koru_event_input: @This().Input = .{ .row = __koru_p_0 };
// >>> PROC: __store_take_kept [tests/regression/600_STDLIB/690_STORE/690_333_lean_store_elides_handle_machinery/input.k:18]
const row = __koru_event_input.row;
_ = &row;
_ = &__koru_event_input;
__koru_store_kept.__koru_materialize();
const __koru_r = __koru_store_kept.__koru_row_of(row) orelse return .{ .empty = .{} };
const __koru_gone_slot = __koru_store_kept.__koru_row_hslot[__koru_r];
const __koru_out_hp = __koru_store_kept.hp[__koru_r];
const __koru_last = __koru_store_kept.len - 1;
if (__koru_r != __koru_last) {
__koru_store_kept.hp[__koru_r] = __koru_store_kept.hp[__koru_last];
const __koru_mv_slot = __koru_store_kept.__koru_row_hslot[__koru_last];
__koru_store_kept.__koru_hslot_row[__koru_mv_slot] = __koru_r;
__koru_store_kept.__koru_row_hslot[__koru_r] = __koru_mv_slot;
}
__koru_store_kept.__koru_hslot_r
... [truncated - 24KB total]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();
// std/store: plural store 'lean' created (SoA cell + insert/query/write/take/stripe units); fields hp: i64
// std/store: plural store 'kept' created (SoA cell + insert/query/write/take/stripe units); fields hp: i64
static class __koru_store_lean {
public static long[] hp = new long[8];
public static long len = 0;
public static long __koru_brand = -1;
}
static class __koru_store_kept {
public static long[] hp = new long[8];
public static dynamic __koru_read_hp(long __h) { long __r = __koru_resolve(__h); return hp[(int)__r]; }
public static long len = 0;
public static long[] __koru_hslot_row = new long[8];
public static long[] __koru_hslot_gen = new long[8];
public static long[] __koru_row_hslot = new long[8];
public static long[] __koru_hslot_free = new long[8];
public static long __koru_hslot_free_len = 0;
public static long __koru_hslot_next = 0;
public static long __koru_brand = 2;
public static bool __koru_ident = true;
public static bool __koru_gen0 = true;
public static void __koru_materialize() {
if (!__koru_ident) return;
for (long __i = 0; __i < len; __i++) { __koru_hslot_row[__i] = __i; __koru_row_hslot[__i] = __i; }
__koru_ident = false;
}
public static long __koru_row_of(long h) {
if (h < 0) return -1;
ulong __u = (ulong)h;
long __slot32 = (long)(__u & 0xFFFFFFFFUL);
if ((__slot32 >> 24) != __koru_brand) return -1;
long __slot = __slot32 & 0xFFFFFF;
if (__slot >= __koru_hslot_next) return -1;
if (__koru_gen0) { if ((__u >> 32) != 0) return -1; return __slot; }
if ((long)(__u >> 32) != __koru_hslot_gen[__slot]) return -1;
if (__koru_ident) return __slot;
long __r = __koru_hslot_row[__slot];
if (__r >= len) return -1;
return __r;
}
public static long __koru_resolve(long h) {
if (h >= 0) {
ulong __u = (ulong)h;
long __slot32 = (long)(__u & 0xFFFFFFFFUL);
if ((__slot32 >> 24) != __koru_brand) throw new global::System.Exception("std/store: 'kept[...]' does not address a row - the value is not a handle this store issued (handles come from `| row` and row cursors)");
long __slot = __slot32 & 0xFFFFFF;
if (__koru_gen0) {
if ((__u >> 32) != 0 && __slot < __koru_hslot_next) throw new global::System.Exception("std/store: stale row handle into store 'kept' - the row it addressed was removed (stale-handle trap pinned at 690_115)");
} else if (__slot < __koru_hslot_next && (long)(__u >> 32) != __koru_hslot_gen[__slot]) throw new global::System.Exception("std/store: stale row handle into store 'kept' - the row it addressed was removed (stale-handle trap pinned at 690_115)");
}
long __r = __koru_row_of(h);
if (__r < 0) throw new global::System.Exception("std/store: 'kept[...]' does not address a row - the value is not a handle this store issued (handles come from `| row` and row cursors)");
return __r;
}
public static long __koru_handle_of(long dense) {
if (__koru_gen0) return dense | (__koru_brand << 24);
long __slot = dense;
if (!__koru_ident) __slot = __koru_row_hslot[dense];
return (__slot | (__koru_brand << 24)) | (__koru_hslot_gen[__slot] << 32);
}
}
public static class __store_insertf_lean_event {
public struct Input {
public long hp;
public long __site_line;
}
public struct Output {
public string tag;
public long row;
public dynamic full;
}
public static Output handler(Input __koru_input) {
var hp = __koru_input.hp;
var __site_line = __koru_input.__site_line;
if (__koru_store_lean.len >= 8) return new Output { tag = "full", full = new { } };
if (__koru_store_lean.len >= 8) throw new global::System.Exception("std/store: store 'lean' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
long __koru_new_row = __koru_store_lean.len;
__koru_store_lean.hp[__koru_new_row] = hp;
__koru_store_lean.len += 1;
return new Output { tag = "row", row = __koru_new_row };
return default;
}
}
public static class __store_apply_lean_event {
public struct Input {
public long row;
public long field;
public long value_0;
}
public struct Output {
public string tag;
public long hp;
}
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 __koru_r = row;
switch (field) {
case 0: { __koru_store_lean.hp[__koru_r] = value_0; return new Output { tag = "hp", hp = value_0 }; }
}
throw new global::System.Exception("__store_apply_lean: field index " + field + " is not a column of store 'lean'");
return default;
}
}
public static class __store_inserth_kept_event {
public struct Input {
public long hp;
public long __site_line;
}
public struct Output {
public string tag;
public long row;
}
public static Output handler(Input __koru_input) {
var hp = __koru_input.hp;
var __site_line = __koru_input.__site_line;
if (__koru_store_kept.len >= 8) throw new global::System.Exception("std/store: store 'kept' is full (capacity 8) - declared capacity and the `| full` branch are pinned at 690_011");
long __koru_new_row = __koru_store_kept.len;
long __koru_hslot;
if (__koru_store_kept.__koru_hslot_free_len > 0) {
__koru_store_kept.__koru_hslot_free_len -= 1;
__koru_hslot = __koru_store_kept.__koru_hslot_free[__koru_store_kept.__koru_hslot_free_len];
} else {
__koru_hslot = __koru_store_kept.__koru_hslot_next;
__koru_store_kept.__koru_hslot_next += 1;
}
if (!__koru_store_kept.__koru_ident) {
__koru_store_kept.__koru_hslot_row[__koru_hslot] = __koru_new_row;
__koru_store_kept.__koru_row_hslot[__koru_new_row] = __koru_hslot;
}
__koru_store_kept.hp[__koru_new_row] = hp;
__koru_store_kept.len += 1;
return new Output { tag = "row", row = __koru_store_kept.__koru_handle_of(__koru_new_row) };
return default;
}
}
public static class __store_apply_kept_event {
public struct Input {
public long row;
public long field;
public long value_0;
}
public struct Output {
public string tag;
public long hp;
}
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 __koru_r = row;
switch (field) {
case 0: { __koru_store_kept.hp[__koru_r] = value_0; return new Output { tag = "hp", hp = value_0 }; }
}
throw new global::System.Exception("__store_apply_kept: field index " + field + " is not a column of store 'kept'");
return default;
}
}
public static class __store_take_kept_event {
public struct Input {
public long row;
}
public struct Output {
public string tag;
public dynamic item;
public dynamic empty;
}
public static Output handler(Input __koru_input) {
var row = __koru_input.row;
__koru_store_kept.__koru_materialize();
long __koru_r = __koru_store_kept.__koru_row_of(row);
if (__koru_r < 0) return new Output { tag = "empty", empty = new { } };
long __koru_gone_slot = __koru_store_kept.__koru_row_hslot[__koru_r];
var __koru_out_hp = __koru_store_kept.hp[__koru_r];
var __koru_last = __koru_store_kept.len - 1;
if (__koru_r != __koru_last) {
__koru_store_kept.hp[__koru_r] = __koru_store_kept.hp[__koru_last];
var __koru_mv_slot = __koru_store_kept.__koru_row_hslot[__koru_last];
__koru_store_kept.__koru_hslot_row[__koru_mv_slot] = __koru_r;
__koru_store_kept.__koru_row_hslot[__koru_r] = __koru_mv_slot;
}
__koru_store_kept.__koru_hslot_row[__koru_gone_slot] = -1;
__koru_store_kept.len = __koru_last;
__koru_store_kept.__koru_hslot_gen[__koru_gone_slot] = ((__koru_store_kept.__koru_hslot_gen[__koru_gone_slot] + 1) & 4294967295L);
__koru_store_kept.__koru_hslot_free[__koru_store_kept.__koru_hslot_free_len] = __koru_gone_slot;
__koru_store_kept.__koru_hslot_free_len += 1;
__koru_store_kept.__koru_gen0 = false;
return new Output { tag = "item", item = new { hp = __koru_out_hp } };
return default;
}
}
public static class __store_sweepbody_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event {
public struct Input {
public long __koru_srf_e_L32_hp;
public long __koru_sdix_e_L32;
}
public static dynamic handler(Input __koru_input) {
var __koru_srf_e_L32_hp = __koru_input.__koru_srf_e_L32_hp;
var __koru_sdix_e_L32 = __koru_input.__koru_sdix_e_L32;
__koru_stdout_write("lean " + __koru_str(__koru_srf_e_L32_hp) + "\n");
return default;
}
}
public static class __store_sweeprun_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event {
public struct Input {
}
public static dynamic handler(Input __koru_input) {
{
for (var __koru_si = 0; __koru_si < __koru_store_lean.len; __koru_si++) {
var __koru_srf_e_L32_hp = __koru_store_lean.hp[__koru_si];
main_module.__store_sweepbody_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event.handler(new main_module.__store_sweepbody_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event.Input { __koru_srf_e_L32_hp = __koru_srf_e_L32_hp, __koru_sdix_e_L32 = __koru_si });
}
}
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 result_0 = main_module.__store_insertf_lean_event.handler(new __store_insertf_lean_event.Input { hp = (long)(1), __site_line = (long)(20)});
if (result_0.tag == "row") {
var _auto_6 = result_0.row;
}
if (result_0.tag == "full") {
}
}
public static void flow1() {
var result_1 = main_module.__store_insertf_lean_event.handler(new __store_insertf_lean_event.Input { hp = (long)(2), __site_line = (long)(23)});
if (result_1.tag == "row") {
var _auto_7 = result_1.row;
}
if (result_1.tag == "full") {
}
}
public static void flow2() {
var result_2 = main_module.__store_inserth_kept_event.handler(new __store_inserth_kept_event.Input { hp = (long)(3), __site_line = (long)(27)});
var k = result_2.row;
var result_3 = main_module.__store_take_kept_event.handler(new __store_take_kept_event.Input { row = (long)(k)});
if (result_3.tag == "item") {
var gone = result_3.item;
__koru_stdout_write("took " + __koru_str(gone.hp) + "\n");
}
if (result_3.tag == "empty") {
var _auto_8 = result_3.empty;
throw new global::System.Exception("input:__store_take_kept: unhandled panic branch 'empty' fired at runtime");
}
}
public static void flow3() {
{
{
for (var __koru_si = 0; __koru_si < __koru_store_lean.len; __koru_si++) {
var __koru_srf_e_L32_hp = __koru_store_lean.hp[__koru_si];
main_module.__store_sweepbody_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event.handler(new main_module.__store_sweepbody_lean_L32_690_333_lean_store_elides_handle_machinery_input_7685bc_event.Input { __koru_srf_e_L32_hp = __koru_srf_e_L32_hp, __koru_sdix_e_L32 = __koru_si });
}
}
}
}
public static void flow4() {
main_module.koru_start_event.handler(new koru_start_event.Input { });
}
public static void flow5() {
main_module.koru_end_event.handler(new koru_end_event.Input { });
}
}
static class Program {
static void Main() {
main_module.flow4();
main_module.flow0();
main_module.flow1();
main_module.flow2();
main_module.flow3();
main_module.flow5();
}
}
Flows
flow ~new click a branch to expand · @labels scroll to their anchor
new (lean, capacity: 8, source: hp: i64)
flow ~new click a branch to expand · @labels scroll to their anchor
new (kept, capacity: 8, source: hp: i64)
flow ~insert click a branch to expand · @labels scroll to their anchor
insert (lean, source: hp: 1)
flow ~insert click a branch to expand · @labels scroll to their anchor
insert (lean, source: hp: 2)
flow ~insert click a branch to expand · @labels scroll to their anchor
insert (kept, source: hp: 3)
flow ~query click a branch to expand · @labels scroll to their anchor
query (lean)
Test Configuration
MUST_RUN LANGUAGES: zig cs
Post-validation Script:
#!/bin/bash
# Emitted-shape oracle for the per-store handle gate. `lean` never surfaces
# a row handle (inserts discard `| row`; the sweep reads `e.hp` only), so
# its cell carries no hslot arrays, no row_of/resolve/handle_of methods,
# and no __store_take_lean unit exists. `kept` binds `| row k` and addresses
# through `kept[k]`, so its machinery must be byte-for-byte present. One
# program, both halves of the decision.
set -u
if [ ! -f output_emitted.zig ]; then
echo "FAIL: no output_emitted.zig"
exit 1
fi
# --- the lean cell: columns + len, nothing handle-shaped ---
LEAN_CELL=$(awk '/__KoruStoreT_lean = struct/,/^};/' output_emitted.zig)
if [ -z "$LEAN_CELL" ]; then
echo "FAIL: no __KoruStoreT_lean cell emitted"
exit 1
fi
if echo "$LEAN_CELL" | grep -q '__koru_hslot\|__koru_row_hslot\|__koru_brand\|__koru_row_of\|__koru_resolve\|__koru_handle_of'; then
echo "FAIL: lean store cell still emits handle machinery"
exit 1
fi
if ! echo "$LEAN_CELL" | grep -q 'hp:' || ! echo "$LEAN_CELL" | grep -q 'len:'; then
echo "FAIL: lean store cell lost its columns or len"
exit 1
fi
# --- nothing anywhere addresses lean through the handle path ---
if grep -q '__koru_store_lean\.__koru_hslot\|__koru_store_lean\.__koru_row_hslot\|__koru_store_lean\.__koru_row_of\|__koru_store_lean\.__koru_resolve\|__koru_store_lean\.__koru_handle_of' output_emitted.zig; then
echo "FAIL: emitted code still drives handle machinery on the lean store"
exit 1
fi
if grep -q '__store_take_lean' output_emitted.zig; then
echo "FAIL: __store_take_lean emitted for a store that cannot take"
exit 1
fi
# --- the kept store is untouched ---
if ! grep -q '__koru_store_kept.__koru_hslot_row\|__KoruStoreT_kept' output_emitted.zig; then
echo "FAIL: kept store lost its handle machinery"
exit 1
fi
if ! grep -q '__store_take_kept' output_emitted.zig; then
echo "FAIL: __store_take_kept missing — the take must still exist"
exit 1
fi
if ! grep -q '__koru_store_kept.__koru_handle_of\|__koru_store_kept.__koru_row_of' output_emitted.zig; then
echo "FAIL: kept store lost its handle mint/resolve calls"
exit 1
fi
# --- lean insert is the dense path: capacity check, writes, len++ ---
if ! grep -q '__koru_store_lean.len += 1' output_emitted.zig; then
echo "FAIL: lean insert lost its len increment"
exit 1
fi
# --- JS target: same decision, when emitted ---
if [ -f output_emitted.js ]; then
if grep -q '__store_take_lean' output_emitted.js; then
echo "FAIL: JS emitted __store_take_lean for a store that cannot take"
exit 1
fi
if grep -q '__koru_store_lean\.__koru_handle_of\|__koru_store_lean\.__koru_resolve\|__koru_store_lean\.__koru_row_of' output_emitted.js; then
echo "FAIL: JS still drives handle machinery on the lean store"
exit 1
fi
if ! grep -q '__store_take_kept' output_emitted.js; then
echo "FAIL: JS lost __store_take_kept"
exit 1
fi
fi
echo "PASS: lean store emits no handle machinery; taking store retains it"
exit 0