xpile 0.1.615

Polyglot transpile workbench (Python/C/C++/Rust/Ruchy/Lean ↔ Rust/Ruchy/PTX/WGSL/SPIR-V) with provable contracts at every layer.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
//! xpile binary entry point.
//!
//! v0.1.0 CLI surface:
//!   xpile transpile    <input> [--target <t>] [--out <path>]
//!   xpile audit        <path>  [--target <t>]
//!   xpile attestations [--roadmap <path>] [--contracts-dir <path>]  (XPILE-QUORUM-005)
//!   xpile quorum       [--contracts-dir <path>] [--fixtures-dir <path>]  (PMAT-033)
//!   xpile diamond      [--contracts-dir <path>]  (PMAT-249 — Diamond-tier coverage)
//!   xpile info         (default if no subcommand)
//!
//! Dispatch goes through [`xpile_core::default_session`]: file extension
//! selects the frontend; `--target` selects the backend.
//!
//! Released to crates.io as a v0.0.1 name reservation; v0.1.0+ is the
//! real binary tracked in this workspace.

use anyhow::{bail, Context, Result};
use clap::{Parser, Subcommand};
use std::path::{Path, PathBuf};
use std::process::Command;
use xpile_backend::{BackendConfig, Profile, Target};
use xpile_core::TranspileSession;
use xpile_ffi_manifest::{
    defining_function, resolve_boundary_to_langs, retype_float_ffi_sites, FfiEntry, FfiManifest,
};
use xpile_frontend::{AliasSemantics, LoweringProfile};
use xpile_meta_hir::{Module, SourceLang, Type};
use xpile_oracle::{capture_cpython_hybrid_ref, diff_stdout, ComparisonResult, CtypesBinding};

#[derive(Parser)]
#[command(name = "xpile", version, about = "Polyglot transpile workbench")]
struct Cli {
    #[command(subcommand)]
    cmd: Option<Cmd>,
}

#[derive(Subcommand)]
enum Cmd {
    /// Show registered frontends and backends (default).
    Info,
    /// Transpile a source file. The file extension selects the frontend;
    /// `--target` selects the backend.
    Transpile {
        /// Path to the source file (e.g., `add.py`, `kernel.c`).
        input: PathBuf,
        /// Target backend: rust | ruchy | ptx | wgsl | spirv | lean | shell.
        #[arg(long, default_value = "rust")]
        target: String,
        /// Output path. Defaults to stdout.
        #[arg(long)]
        out: Option<PathBuf>,
    },
    /// Report falsifier F1 (Layer-1 contract citation coverage) for
    /// a corpus. Walks the given path, transpiles every source file
    /// xpile recognises, and reports the % of emitted functions that
    /// carry a `// xpile-contract: <ID>` citation. Drives the
    /// XPILE-FALSIFY-001 metric from `sub/provability-roadmap.md`.
    Audit {
        /// Path to scan (file or directory). Defaults to the current
        /// directory. Source files are detected by extension via the
        /// registered frontends.
        #[arg(default_value = ".")]
        path: PathBuf,
        /// Target backend to audit. Citation emission semantics are
        /// per-backend, so the metric is reported per-target.
        #[arg(long, default_value = "rust")]
        target: String,
        /// Emit JSON instead of human-readable text. Useful for CI
        /// dashboards and the `XPILE-SOTA-XXX` quarterly dossier.
        #[arg(long)]
        json: bool,
    },
    /// Report the Extrinsic stratum's per-contract attestation counts
    /// (XPILE-QUORUM-005). Walks `contracts/*.yaml` to discover the
    /// contract ID universe, then scans the roadmap.yaml work-item
    /// log for mentions of each ID; each occurrence is one human
    /// attestation. Feeds the §14.4 quorum's Extrinsic-stratum vote
    /// tally alongside Semantic (Lean), Symbolic (Kani), and
    /// Runtime (diff_exec).
    Attestations {
        /// Path to the roadmap YAML (canonical attestation log).
        #[arg(long, default_value = "docs/roadmaps/roadmap.yaml")]
        roadmap: PathBuf,
        /// Path to contracts dir; every `*.yaml` with a `metadata.id`
        /// field contributes its ID to the universe being scanned.
        #[arg(long, default_value = "contracts")]
        contracts_dir: PathBuf,
        /// Emit JSON instead of human-readable text.
        #[arg(long)]
        json: bool,
    },
    /// Unified §14.4 N-of-M oracle quorum reporter (PMAT-033). Walks
    /// every contract and tallies per-stratum votes:
    ///   Semantic   = `lean_theorem:` refs in the contract's own YAML
    ///   Symbolic   = `kani_harness:` refs in the contract's own YAML
    ///   Runtime    = fixture files under tests/fixtures/ that name
    ///                the contract ID in a comment / docstring
    ///   Extrinsic  = roadmap.yaml work-item mentions (PMAT-032)
    /// Reports per-contract counts + a quorum status:
    ///   QUORUM     (≥1 vote in ≥3 strata)
    ///   PARTIAL    (≥1 vote in 1-2 strata)
    ///   UNVERIFIED (0 strata represented)
    Quorum {
        #[arg(long, default_value = "contracts")]
        contracts_dir: PathBuf,
        #[arg(long, default_value = "crates/xpile/tests/fixtures")]
        fixtures_dir: PathBuf,
        #[arg(long, default_value = "docs/roadmaps/roadmap.yaml")]
        roadmap: PathBuf,
        #[arg(long)]
        json: bool,
    },
    /// Diamond-tier coverage reporter (PMAT-249). Walks every
    /// contract YAML and tallies the number of `_diamond` lean_theorem
    /// references — the substrate's Diamond-tier coverage per contract.
    /// Reports raw count + classification:
    ///   `none` (0 Diamonds), `depth-1` (1 Diamond category),
    ///   `depth-2` (2 Diamonds), ..., `depth-8` (8 Diamonds),
    ///   `depth-9+` (9+ Diamonds — opened by PMAT-298).
    ///
    /// Useful for tracking Diamond depth over time and identifying
    /// contracts that could benefit from additional algebraic
    /// axiomatizations.
    Diamond {
        #[arg(long, default_value = "contracts")]
        contracts_dir: PathBuf,
        #[arg(long)]
        json: bool,
    },
    /// Hybrid transpile — Phase 1 + Phase 2 of the hybrid flow (§16). Walks a
    /// module directory, dispatches each source file to its frontend, collects
    /// the resulting modules, and reconciles their cross-language FFI boundaries
    /// (`FfiManifest::reconcile`) into a manifest. Prints one line per resolved
    /// boundary (symbol, from→to, shim_id) or the unresolved boundaries and
    /// exits non-zero (the `manifest_completeness` gate of C-FFI-CPYTHON-EXT).
    Hybrid {
        /// Path to the hybrid module directory (e.g. a dir with `app.py` +
        /// `_core.c`). Source files are detected by extension.
        path: PathBuf,
        /// Phase 4: write the reconciled Rust FFI shims (`extern "C"` + safe
        /// wrappers) to this path. Omit to only report the manifest.
        #[arg(long)]
        emit_shims: Option<PathBuf>,
        /// Phase 5a: emit a buildable Cargo workspace (a `build.rs` that
        /// cc-compiles the C side + links the emitted shims, plus the non-C
        /// modules lowered to Rust) to this directory. `cargo build` it to
        /// compile + link the hybrid artifact.
        #[arg(long)]
        emit_workspace: Option<PathBuf>,
        /// NORTH STAR (Phase 3 + 5): emit the workspace to a temp dir,
        /// `cargo build` + run the linked C+shim artifact, and differential-check
        /// its stdout against the CPython reference (the C extension bound via
        /// ctypes). Exit 0 on Match, non-zero on Divergence. Graceful-skips
        /// (exit 0) when `cc`/`python3`/`cargo` are unavailable.
        #[arg(long)]
        verify: bool,
    },
}

fn main() -> Result<()> {
    let cli = Cli::parse();
    let session = xpile_core::default_session();
    match cli.cmd.unwrap_or(Cmd::Info) {
        Cmd::Info => print_info(&session),
        Cmd::Transpile { input, target, out } => {
            transpile(&session, &input, &target, out.as_deref())
        }
        Cmd::Audit { path, target, json } => audit(&session, &path, &target, json),
        Cmd::Attestations {
            roadmap,
            contracts_dir,
            json,
        } => attestations(&roadmap, &contracts_dir, json),
        Cmd::Quorum {
            contracts_dir,
            fixtures_dir,
            roadmap,
            json,
        } => quorum(&contracts_dir, &fixtures_dir, &roadmap, json),
        Cmd::Diamond {
            contracts_dir,
            json,
        } => diamond(&contracts_dir, json),
        Cmd::Hybrid {
            path,
            emit_shims,
            emit_workspace,
            verify,
        } => hybrid(
            &session,
            &path,
            emit_shims.as_deref(),
            emit_workspace.as_deref(),
            verify,
        ),
    }
}

/// PMAT-897/899 (Sprint-2 Tier 2): the `xpile hybrid <dir>` command — Phase 1
/// (dispatch every source file in the directory to its frontend, collecting a
/// `Vec<Module>`) + Phase 2 (reconcile the modules' cross-language FFI
/// boundaries into a manifest) + Phase 4 (with `--emit-shims`, lower the
/// manifest to a per-paradigm Rust FFI shim file — `extern "C"` for C, a
/// `Command` wrapper for Shell, a mechanism-named gap for the rest). Reports
/// each resolved boundary, or the unresolved ones with a non-zero exit (the
/// `manifest_completeness` invariant of `C-FFI-CPYTHON-EXT`).
///
/// PMAT-902 (NORTH STAR): with `--verify`, runs the executing differential —
/// Phase 5 (emit the workspace to a temp dir, `cargo build` + run the linked
/// C+shim artifact) compared against Phase 3 (the CPython reference, the C
/// extension bound via ctypes) — and prints a Match/Divergent verdict.
fn hybrid(
    session: &TranspileSession,
    path: &Path,
    emit_shims: Option<&Path>,
    emit_workspace: Option<&Path>,
    verify: bool,
) -> Result<()> {
    let sources = collect_source_files(session, path);
    if sources.is_empty() {
        bail!("no source files xpile recognises under {}", path.display());
    }
    let mut modules = Vec::new();
    // PMAT-901: retain each C file's (filename, source) so `--emit-workspace` can
    // write it into the workspace for `build.rs` to cc-compile — the Module IR
    // does not carry the original source text.
    let mut c_sources: Vec<(String, String)> = Vec::new();
    // PMAT-902: retain each Python file's (filename, source) so `--verify` can run
    // the original `main()` under CPython as the differential reference.
    let mut py_sources: Vec<(String, String)> = Vec::new();
    for src in sources {
        let contents =
            std::fs::read_to_string(&src).with_context(|| format!("reading {}", src.display()))?;
        // PMAT-038 dispatch (same as transpile/audit): collect_source_files
        // already filtered by registered extension, so this is never None.
        let Some(frontend) = session.frontends.iter().find(|f| f.matches_path(&src)) else {
            continue;
        };
        let module = frontend
            .parse_and_lower(&src, &contents)
            .with_context(|| format!("parse_and_lower failed for {}", src.display()))?;
        let fname = src
            .file_name()
            .and_then(|n| n.to_str())
            .map(String::from)
            .unwrap_or_else(|| "source".to_string());
        match module.source_lang {
            SourceLang::C => c_sources.push((fname, contents.clone())),
            SourceLang::Python => py_sources.push((fname, contents.clone())),
            _ => {}
        }
        modules.push(module);
    }

    println!(
        "xpile hybrid: {} module(s) dispatched from {}",
        modules.len(),
        path.display()
    );
    // PMAT-898: with the full module set in hand, rewrite each boundary's
    // provisional `to_lang` (hardcoded C by the single-file frontend) to the
    // language of the sibling that actually defines the symbol — so a relative
    // import of a Python sibling becomes Python→Python (dropped by reconcile),
    // not a false Python→C FFI boundary.
    resolve_boundary_to_langs(&mut modules);
    match FfiManifest::reconcile(&modules) {
        Ok(manifest) => {
            // PMAT-931: re-type the FFI call sites of reconciled `double`-
            // returning C symbols in the calling (Python) module — the Python
            // frontend lowered them with the unknown-callee I64 default before
            // the C side was known, mis-rendering a whole double (`10` vs
            // Python's `10.0`) and mistyping `let r: float` (rustc E0308).
            retype_float_ffi_sites(&manifest, &mut modules);
            if manifest.entries.is_empty() {
                println!("  no cross-language FFI boundaries");
            } else {
                println!("  {} FFI boundary(ies) reconciled:", manifest.entries.len());
                for e in &manifest.entries {
                    println!(
                        "    {} : {:?}{:?}  [{}]",
                        e.symbol, e.from_lang, e.to_lang, e.shim_id
                    );
                }
            }
            // PMAT-899 Phase 4: with `--emit-shims <path>`, lower the reconciled
            // manifest to a self-contained Rust FFI shim file (per-paradigm: real
            // `extern "C"` for C, `Command` for Shell; a mechanism-named gap for
            // the rest). All-or-nothing — any unshimmable boundary fails loud, so
            // a half-shimmed hybrid build never reaches disk.
            if let Some(out_path) = emit_shims {
                if manifest.entries.is_empty() {
                    println!("  --emit-shims: no FFI boundaries — nothing to emit");
                    return Ok(());
                }
                match manifest.emit_rust_shims(&modules) {
                    Ok(src) => {
                        std::fs::write(out_path, &src)
                            .with_context(|| format!("writing shims to {}", out_path.display()))?;
                        println!(
                            "  emitted {} FFI shim(s) → {}",
                            manifest.entries.len(),
                            out_path.display()
                        );
                    }
                    Err(err) => {
                        eprintln!("xpile hybrid: shim emission FAILED");
                        for u in &err.unsupported {
                            eprintln!("    {u}");
                        }
                        bail!("{} unshimmable FFI boundary(ies)", err.unsupported.len());
                    }
                }
            }
            // PMAT-901 Phase 5a: with `--emit-workspace <dir>`, emit a buildable
            // Cargo workspace — the C side as cc-compiled + linked objects, the
            // non-C modules lowered to Rust, and the reconciled `extern "C"` shims
            // wiring them together. `cargo build` it for the first executing
            // hybrid artifact.
            if let Some(ws_dir) = emit_workspace {
                let rust_src = lower_hybrid_rust(session, &modules)?;
                match manifest.emit_hybrid_workspace(&modules, &c_sources, &rust_src, ws_dir) {
                    Ok(()) => println!(
                        "  emitted hybrid workspace → {} (run `cargo build` to compile + link)",
                        ws_dir.display()
                    ),
                    Err(err) => {
                        eprintln!("xpile hybrid: workspace emission FAILED: {err}");
                        bail!("hybrid workspace emit failed");
                    }
                }
            }
            // PMAT-902 NORTH STAR: `--verify` runs the executing differential.
            if verify {
                return verify_hybrid(session, &manifest, &modules, &c_sources, &py_sources);
            }
            Ok(())
        }
        Err(err) => {
            eprintln!("xpile hybrid: FFI reconciliation FAILED");
            for u in &err.unresolved {
                eprintln!("    {u}");
            }
            // Non-zero exit: an unresolved boundary blocks the hybrid build.
            bail!("{} unresolved FFI boundary(ies)", err.unresolved.len())
        }
    }
}

/// Lower the non-C, non-Shell modules to one Rust source string — the body of
/// the emitted hybrid workspace's `main.rs`. The C side becomes the linked
/// object and Shell can't lower to Rust, so both are skipped; everything else
/// (Python/Ruchy/Rust/Lean) is the Rust the artifact runs. Shared by
/// `--emit-workspace` and `--verify`.
fn lower_hybrid_rust(session: &TranspileSession, modules: &[Module]) -> Result<String> {
    let rust_backend = session
        .backends
        .iter()
        .find(|b| b.targets().contains(&Target::Rust))
        .context("no Rust backend registered")?;
    let config = BackendConfig {
        target: Target::Rust,
        profile: Profile::RustOut,
        hardware: None,
    };
    let mut rust_src = String::new();
    for m in modules {
        if matches!(m.source_lang, SourceLang::C | SourceLang::Shell) {
            continue;
        }
        let artifact = rust_backend
            .lower(m, &config)
            .with_context(|| format!("lowering module `{}` to Rust", m.name))?;
        rust_src.push_str(&artifact.primary);
        rust_src.push('\n');
    }
    Ok(rust_src)
}

/// Is `tool --version` spawnable? Lets `--verify` graceful-skip on a runner
/// without a C compiler / Python / cargo (mirrors the oracle presence gates).
fn tool_available(tool: &str) -> bool {
    Command::new(tool).arg("--version").output().is_ok()
}

/// Meta-HIR type → `ctypes` type name, matching the FFI shim's C-ABI mapping
/// (`I64`/`Bool` → `c_int`, `F64` → `c_double`). `None` for non-ABI types.
fn ctypes_name(ty: &Type) -> Option<&'static str> {
    match ty {
        Type::I64 | Type::Bool => Some("c_int"),
        Type::F64 => Some("c_double"),
        _ => None,
    }
}

/// Build the `ctypes` ABI binding for a C boundary symbol from its defining
/// function's meta-HIR types. `None` if a param/return type is not ABI-mappable
/// (the caller then skips verification — capability honesty over a wrong bind).
fn ctypes_binding_for(entry: &FfiEntry, modules: &[Module]) -> Option<CtypesBinding> {
    let f = defining_function(modules, entry)?;
    let mut argtypes = Vec::new();
    for p in &f.params {
        argtypes.push(ctypes_name(&p.ty)?);
    }
    let restype = match &f.return_type {
        Type::Unit => None,
        ty => Some(ctypes_name(ty)?),
    };
    Some(CtypesBinding {
        symbol: entry.symbol.clone(),
        argtypes,
        restype,
    })
}

/// PMAT-902 NORTH STAR — the executing hybrid differential. Builds the CPython
/// reference (the C extension bound via `ctypes`, running the original `app.py`
/// `main()`), emits + `cargo build`s the hybrid workspace, runs the linked
/// C+shim artifact, and compares the two stdouts. Match → `Ok(())`; Divergence →
/// non-zero exit. Graceful-skips (`Ok`) when a toolchain or fixture shape the
/// check needs is absent, so a constrained CI stays green.
fn verify_hybrid(
    session: &TranspileSession,
    manifest: &FfiManifest,
    modules: &[Module],
    c_sources: &[(String, String)],
    py_sources: &[(String, String)],
) -> Result<()> {
    // Only the C boundary path is executed this slice. No C boundary → nothing
    // to differentially verify.
    let c_entries: Vec<&FfiEntry> = manifest
        .entries
        .iter()
        .filter(|e| e.to_lang == SourceLang::C)
        .collect();
    if c_entries.is_empty() {
        println!("  --verify: no C FFI boundary to execute — nothing to verify");
        return Ok(());
    }

    // Toolchain gate — graceful-skip so a constrained runner stays green.
    if !tool_available("cc") || !tool_available("python3") || !tool_available("cargo") {
        println!("  --verify: cc/python3/cargo unavailable — skipping execution");
        return Ok(());
    }

    // The Python entry: the dispatched Python source that defines `main()`.
    let Some((py_name, py_source)) = py_sources.iter().find(|(_, s)| s.contains("def main")) else {
        println!("  --verify: no Python `main()` entry — nothing to run");
        return Ok(());
    };

    // ctypes bindings for every C boundary; skip if any type isn't ABI-mappable.
    let mut bindings = Vec::new();
    for e in &c_entries {
        match ctypes_binding_for(e, modules) {
            Some(b) => bindings.push(b),
            None => {
                println!(
                    "  --verify: boundary `{}` has a non-ABI-mappable type — skipping",
                    e.symbol
                );
                return Ok(());
            }
        }
    }

    // Phase 3 — capture the CPython reference (the C extension bound via ctypes).
    let reference = capture_cpython_hybrid_ref(py_source, c_sources, &bindings)
        .context("capturing the CPython reference")?;

    // Phase 5 — emit the workspace to a temp dir, build, run the linked artifact.
    let ws = std::env::temp_dir().join(format!("xpile_verify_ws_{}", std::process::id()));
    let _ = std::fs::remove_dir_all(&ws);
    let rust_src = lower_hybrid_rust(session, modules)?;
    manifest
        .emit_hybrid_workspace(modules, c_sources, &rust_src, &ws)
        .map_err(|e| anyhow::anyhow!("workspace emit failed: {e}"))?;

    let target = ws.join("target");
    let build = Command::new("cargo")
        .current_dir(&ws)
        .arg("build")
        .arg("--target-dir")
        .arg(&target)
        .output()
        .context("cargo build of the hybrid workspace")?;
    if !build.status.success() {
        let _ = std::fs::remove_dir_all(&ws);
        bail!(
            "hybrid artifact failed to build:\n{}",
            String::from_utf8_lossy(&build.stderr)
        );
    }
    let bin = target.join("debug").join("xpile-hybrid-artifact");
    let run = Command::new(&bin)
        .output()
        .context("running the hybrid artifact")?;
    let _ = std::fs::remove_dir_all(&ws);
    if !run.status.success() {
        bail!(
            "hybrid artifact exited {}:\n{}",
            run.status,
            String::from_utf8_lossy(&run.stderr)
        );
    }
    let actual = String::from_utf8_lossy(&run.stdout)
        .trim_end_matches('\n')
        .to_string();

    // Differential verdict.
    println!("  --verify: CPython reference (from {py_name}) vs executed C+shim artifact:");
    match diff_stdout(&reference, &actual) {
        ComparisonResult::Match => {
            println!(
                "  ✓ MATCH — stdout byte-identical ({} line(s)): {reference:?}",
                reference.lines().count().max(1)
            );
            Ok(())
        }
        ComparisonResult::Divergence {
            index,
            expected,
            actual: diverged,
        } => {
            eprintln!("  ✗ DIVERGENT at line {index}:");
            eprintln!("      CPython:  {expected}");
            eprintln!("      artifact: {diverged}");
            bail!("hybrid verify: artifact diverged from the CPython reference")
        }
    }
}

fn print_info(session: &TranspileSession) -> Result<()> {
    println!("xpile — polyglot transpile workbench");
    println!();

    println!("Code lane:");
    println!("  frontends ({}):", session.frontends.len());
    for f in &session.frontends {
        println!("    - {} ({})", f.name(), f.extensions().join(", "));
    }
    println!("  backends ({}):", session.backends.len());
    for b in &session.backends {
        let targets: Vec<String> = b.targets().iter().map(|t| format!("{:?}", t)).collect();
        println!("    - {}{}", b.name(), targets.join(", "));
    }

    println!();
    println!("Proof lane:");
    println!(
        "  contract_frontends ({}):",
        session.contract_frontends.len()
    );
    for cf in &session.contract_frontends {
        let fmts: Vec<String> = cf.formats().iter().map(|f| format!("{:?}", f)).collect();
        println!("    - {}{}", cf.name(), fmts.join(", "));
    }
    println!("  contract_backends ({}):", session.contract_backends.len());
    for cb in &session.contract_backends {
        let fmts: Vec<String> = cb.formats().iter().map(|f| format!("{:?}", f)).collect();
        println!("    - {}{}", cb.name(), fmts.join(", "));
    }
    Ok(())
}

fn transpile(
    session: &TranspileSession,
    input: &Path,
    target_str: &str,
    out: Option<&Path>,
) -> Result<()> {
    let source =
        std::fs::read_to_string(input).with_context(|| format!("reading {}", input.display()))?;

    // PMAT-038: dispatch via `Frontend::matches_path` so bashrs-frontend
    // catches extensionless `Makefile` / `Dockerfile`. Every other
    // frontend's default impl still delegates to extension matching, so
    // python / c / ruchy behaviour is unchanged.
    let frontend = session
        .frontends
        .iter()
        .find(|f| f.matches_path(input))
        .with_context(|| {
            let ext_label = input
                .extension()
                .and_then(|s| s.to_str())
                .map(|e| format!("`.{e}`"))
                .unwrap_or_else(|| {
                    input
                        .file_name()
                        .and_then(|n| n.to_str())
                        .map(|n| format!("filename `{n}`"))
                        .unwrap_or_else(|| "(unknown)".to_string())
                });
            let known: Vec<&'static str> = session
                .frontends
                .iter()
                .flat_map(|f| f.extensions().iter().copied())
                .collect();
            format!("no frontend handles {ext_label}; known extensions: {known:?}")
        })?;

    // PMAT-1024: resolve the target BEFORE lowering — the frontend's alias
    // dispositions are target-aware (a reference-semantics target executes
    // Python object sharing natively, so the clone/move/refuse suite is
    // skipped for pointer-stable types there).
    let target = parse_target(target_str)?;
    let module = frontend
        .parse_and_lower_profiled(input, &source, lowering_profile_for(target))
        .with_context(|| format!("parse_and_lower failed for {}", input.display()))?;

    let backend = session
        .backends
        .iter()
        .find(|b| b.targets().contains(&target))
        .with_context(|| {
            let known: Vec<String> = session
                .backends
                .iter()
                .flat_map(|b| b.targets().iter().map(|t| format!("{t:?}")))
                .collect();
            format!("no backend for target {target:?}; known: {known:?}")
        })?;

    let config = BackendConfig {
        target,
        profile: Profile::RustOut,
        hardware: None,
    };

    let artifact = backend
        .lower(&module, &config)
        .with_context(|| format!("backend `{}` failed", backend.name()))?;

    match out {
        Some(path) => {
            std::fs::write(path, &artifact.primary)
                .with_context(|| format!("writing {}", path.display()))?;
            eprintln!("xpile: wrote {}", path.display());
        }
        None => print!("{}", artifact.primary),
    }
    Ok(())
}

/// PMAT-1024: which binding model the target's data layout gives bindings.
/// WASM linear memory holds container/struct locals as i32 base-pointers, so
/// a binding copy IS Python's object sharing (`AliasSemantics::Reference`);
/// every other target keeps the value-semantics dispositions.
fn alias_semantics_for(target: Target) -> AliasSemantics {
    match target {
        Target::Wasm => AliasSemantics::Reference,
        _ => AliasSemantics::Value,
    }
}

/// PMAT-1034: the full lowering profile — alias semantics plus whether the
/// target can express a runtime abort. Rust/Ruchy `panic!` and the WASM
/// `unreachable` trap can carry the empty-iterable loop-var-leak guard (the
/// `UnboundLocalError` analogue); PTX/WGSL/SPIR-V/Lean/shell have no portable
/// abort, so the guard is not emitted there (refusing those shapes instead
/// would block programs they execute exactly on every non-empty input).
fn lowering_profile_for(target: Target) -> LoweringProfile {
    LoweringProfile {
        alias_semantics: alias_semantics_for(target),
        runtime_abort: matches!(target, Target::Rust | Target::Ruchy | Target::Wasm),
    }
}

fn parse_target(s: &str) -> Result<Target> {
    Ok(match s {
        "rust" => Target::Rust,
        "ruchy" => Target::Ruchy,
        "ptx" => Target::Ptx,
        "wgsl" => Target::Wgsl,
        "spirv" => Target::Spirv,
        // PMAT-951: native WASM emit — `--target wasm` resolves to the
        // xpile-wasm-codegen WAT emitter (scalar/control subset).
        "wasm" | "wat" => Target::Wasm,
        "lean" => Target::Lean,
        // PMAT-037 / XPILE-BASHRS-MERGER-001: shell target accepted
        // via the bashrs-backend scaffold.
        "shell" | "sh" | "bash" => Target::Shell,
        // PMAT-953: forjar.yaml IaC manifest (BACKEND-ONLY). Lowers a
        // SHELL-origin command sequence to forjar `type: file`/`type: task`
        // resources via xpile-forjar-codegen.
        "forjar" | "forjar-yaml" => Target::ForjarYaml,
        other => {
            bail!(
                "unknown target `{other}`; choose: rust, ruchy, ptx, wgsl, spirv, wasm, lean, shell, forjar"
            )
        }
    })
}

// ─── audit: F1 citation-coverage reporter (XPILE-FALSIFY-001) ────
//
// Per `sub/provability-roadmap.md` §1.1:
//   F1 = % of transpiled functions carrying at least one
//        `// xpile-contract: <ID>` citation
//   target: ≥ 95% on a fixed corpus
//   falsified: < 50%
//
// Implementation: for every source file recognised by the dispatch
// table, run the full transpile pipeline and parse the emitted output
// for function declarations + their immediately-preceding citation
// comments. The metric is computed per-backend because the citation
// syntax differs (Rust/Ruchy use `// xpile-contract:`, Lean uses
// `@[xpile_contract "..."]`); this CLI exposes the Rust/Ruchy form
// since they share a regex. Lean coverage is a follow-up.

#[derive(Debug, Default, Clone)]
struct AuditReport {
    files_scanned: usize,
    // Total functions emitted across the corpus.
    functions_emitted: usize,
    // Subset of `functions_emitted` where `Function::applicable_contracts()`
    // is non-empty — i.e. the citation pipeline is *supposed* to fire
    // (function does arithmetic, bitwise, shift, etc.; not pure
    // comparison / logical). This is the F1 *denominator* per
    // XPILE-FALSIFY-002 — pre-002, the denominator was `functions_emitted`,
    // which double-penalised comparison-only fixtures.
    functions_requiring_citation: usize,
    // Subset of `functions_requiring_citation` that actually got a
    // citation in the emitted source.
    functions_with_citation: usize,
    // Sanity: functions that have a citation but shouldn't (e.g., a
    // future codegen bug that over-cites). Any non-zero value is a
    // bug to investigate, even though it doesn't fail F1 today.
    over_citations: usize,
    parse_errors: Vec<(PathBuf, String)>,
}

impl AuditReport {
    fn coverage_pct(&self) -> f64 {
        if self.functions_requiring_citation == 0 {
            // No applicable functions in the corpus → metric is
            // vacuously satisfied. 100% by convention so that a
            // small / empty corpus doesn't trip the falsifier.
            return 100.0;
        }
        (self.functions_with_citation as f64) / (self.functions_requiring_citation as f64) * 100.0
    }

    /// F1 status per the roadmap's targets:
    ///   ≥ 95% → OK    (target reached)
    ///   < 95% but ≥ 50% → WARN (below target, above falsifier)
    ///   < 50%  → FAIL (falsifier tripped — the citation pipeline is performative)
    fn f1_status(&self) -> &'static str {
        let pct = self.coverage_pct();
        if pct >= 95.0 {
            "OK"
        } else if pct >= 50.0 {
            "WARN"
        } else {
            "FAIL"
        }
    }
}

fn audit(session: &TranspileSession, path: &Path, target_str: &str, json: bool) -> Result<()> {
    let target = parse_target(target_str)?;
    // F1 now supports Rust, Ruchy, AND Lean — XPILE-FALSIFY-002 added
    // Lean's `@[xpile_contract "..."]` attribute as a recognised
    // citation form. PTX / WGSL / SPIR-V citations are XPILE-FALSIFY-003+.
    if !matches!(target, Target::Rust | Target::Ruchy | Target::Lean) {
        bail!(
            "`xpile audit` supports --target rust | ruchy | lean; {target:?} citation form not yet known — follow-up XPILE-FALSIFY-003"
        );
    }

    let mut report = AuditReport::default();
    let sources = collect_source_files(session, path);
    for src in sources {
        report.files_scanned += 1;
        let contents = match std::fs::read_to_string(&src) {
            Ok(s) => s,
            Err(e) => {
                report.parse_errors.push((src, format!("read failed: {e}")));
                continue;
            }
        };
        // PMAT-038: same `matches_path` dispatch as the transpile
        // path. collect_source_files already filters by registered
        // extensions, so this lookup is currently never `None` —
        // but reaching for the trait method keeps the dispatch
        // pattern uniform across the two CLI subcommands.
        let Some(frontend) = session.frontends.iter().find(|f| f.matches_path(&src)) else {
            continue;
        };
        let module = match frontend.parse_and_lower(&src, &contents) {
            Ok(m) => m,
            Err(e) => {
                report
                    .parse_errors
                    .push((src.clone(), format!("parse_and_lower: {e}")));
                continue;
            }
        };
        let backend = session
            .backends
            .iter()
            .find(|b| b.targets().contains(&target))
            .expect("target validated above");
        let config = BackendConfig {
            target,
            profile: Profile::RustOut,
            hardware: None,
        };
        let artifact = match backend.lower(&module, &config) {
            Ok(a) => a,
            Err(e) => {
                report
                    .parse_errors
                    .push((src.clone(), format!("backend: {e}")));
                continue;
            }
        };
        // Per-function audit: walk the Module's typed items, ask each
        // function whether it requires a citation (via
        // `Function::applicable_contracts()`), then check whether the
        // emitted source actually has the citation immediately above
        // the function's declaration. This is XPILE-FALSIFY-002's
        // refinement — pre-002, the denominator was "every emitted
        // function" which double-penalised comparison-only functions.
        for item in &module.items {
            // PMAT-502bj: only functions carry contract citations; skip consts.
            let xpile_meta_hir::Item::Function(f) = item else {
                continue;
            };
            let requires_citation = !f.applicable_contracts().is_empty();
            let cited = function_has_citation(&artifact.primary, &f.name, target);
            report.functions_emitted += 1;
            match (requires_citation, cited) {
                (true, true) => {
                    report.functions_requiring_citation += 1;
                    report.functions_with_citation += 1;
                }
                (true, false) => {
                    report.functions_requiring_citation += 1;
                }
                (false, true) => {
                    report.over_citations += 1;
                }
                (false, false) => {}
            }
        }
    }

    if json {
        print_audit_json(&report, target);
    } else {
        print_audit_text(&report, target);
    }
    Ok(())
}

/// Walk `path` (file or directory) and return every source file whose
/// extension matches a registered frontend. Skips hidden directories
/// and `target/`.
fn collect_source_files(session: &TranspileSession, path: &Path) -> Vec<PathBuf> {
    let known_exts: Vec<&str> = session
        .frontends
        .iter()
        .flat_map(|f| f.extensions().iter().copied())
        .collect();

    let mut out = Vec::new();
    if path.is_file() {
        if let Some(ext) = path.extension().and_then(|s| s.to_str()) {
            if known_exts.contains(&ext) {
                out.push(path.to_path_buf());
            }
        }
        return out;
    }
    if path.is_dir() {
        walk_dir(path, &known_exts, &mut out);
    }
    out
}

fn walk_dir(dir: &Path, known_exts: &[&str], out: &mut Vec<PathBuf>) {
    let Ok(entries) = std::fs::read_dir(dir) else {
        return;
    };
    for entry in entries.flatten() {
        let p = entry.path();
        let name = p.file_name().and_then(|n| n.to_str()).unwrap_or_default();
        if name.starts_with('.') || name == "target" {
            continue;
        }
        if p.is_dir() {
            walk_dir(&p, known_exts, out);
        } else if let Some(ext) = p.extension().and_then(|s| s.to_str()) {
            if known_exts.contains(&ext) {
                out.push(p);
            }
        }
    }
}

/// True if `function_name` has a contract citation immediately
/// preceding its declaration in `source`. Per-target signature shapes
/// and citation forms (XPILE-FALSIFY-002 added Lean):
///
///   Rust:  `// xpile-contract: <ID>`   prefix `pub fn <name>(`
///   Ruchy: `// xpile-contract: <ID>`   prefix `fun <name>(`
///   Lean:  `@[xpile_contract "<ID>"]`  prefix `def <name> (` / `partial def <name> (`
///
/// Walks backward from the declaration through blank lines to allow
/// for pretty-printer whitespace insertion. The walk stops at the
/// first non-blank line: either it's a citation (cited) or it isn't
/// (not cited).
fn function_has_citation(source: &str, function_name: &str, target: Target) -> bool {
    let prefixes: &[&str] = match target {
        Target::Rust => &["pub fn "],
        Target::Ruchy => &["fun "],
        // Lean has two signature forms — plain `def` and `partial def`
        // (PMAT-010's while-loop helper uses the latter).
        Target::Lean => &["def ", "partial def "],
        _ => return false,
    };
    let citation_marker = match target {
        Target::Rust | Target::Ruchy => "// xpile-contract:",
        Target::Lean => "@[xpile_contract",
        _ => return false,
    };
    let needle = format!("{function_name}(");
    let needle_space = format!("{function_name} (");

    let lines: Vec<&str> = source.lines().collect();
    for (i, line) in lines.iter().enumerate() {
        let stripped = line.trim_start();
        let is_decl = prefixes.iter().any(|p| {
            stripped.starts_with(p)
                && (stripped[p.len()..].starts_with(&needle)
                    || stripped[p.len()..].starts_with(&needle_space))
        });
        if !is_decl {
            continue;
        }
        // Walk backward looking for the citation (or its absence).
        let mut j = i;
        while j > 0 {
            j -= 1;
            let prev = lines[j].trim();
            if prev.is_empty() {
                continue;
            }
            return prev.starts_with(citation_marker);
        }
        return false;
    }
    false
}

fn print_audit_text(report: &AuditReport, target: Target) {
    println!("xpile audit — F1 (Layer-1 contract citation coverage)");
    println!("target backend: {:?}", target);
    println!();
    println!("  files scanned       : {}", report.files_scanned);
    println!("  functions emitted   : {}", report.functions_emitted);
    println!(
        "  require citation    : {}",
        report.functions_requiring_citation
    );
    println!("  with citation       : {}", report.functions_with_citation);
    println!(
        "  coverage (F1)       : {:.1}%   [{}]",
        report.coverage_pct(),
        report.f1_status()
    );
    if report.over_citations > 0 {
        println!(
            "  over-citations      : {}  (codegen bug?)",
            report.over_citations
        );
    }
    if !report.parse_errors.is_empty() {
        println!();
        println!("  errors ({}):", report.parse_errors.len());
        for (path, err) in &report.parse_errors {
            println!("    - {}: {}", path.display(), err);
        }
    }
    println!();
    println!(
        "F1 thresholds (sub/provability-roadmap.md §1.1): ≥95% OK; ≥50% WARN; <50% FAIL (falsifier tripped)."
    );
}

fn print_audit_json(report: &AuditReport, target: Target) {
    // Hand-rolled JSON to avoid pulling serde_json into the xpile bin
    // for a one-line dashboard payload. The schema mirrors what
    // sub/provability-roadmap.md §1.1 says we report: F1 + scan
    // metadata + parse-error count. XPILE-FALSIFY-002 added the
    // `functions_requiring_citation` denominator and the
    // `over_citations` sanity field.
    println!(
        "{{\"target\":\"{:?}\",\"files_scanned\":{},\"functions_emitted\":{},\"functions_requiring_citation\":{},\"functions_with_citation\":{},\"over_citations\":{},\"f1_pct\":{:.1},\"f1_status\":\"{}\",\"errors\":{}}}",
        target,
        report.files_scanned,
        report.functions_emitted,
        report.functions_requiring_citation,
        report.functions_with_citation,
        report.over_citations,
        report.coverage_pct(),
        report.f1_status(),
        report.parse_errors.len()
    );
}

// ─── attestations: Extrinsic-stratum vote tally (XPILE-QUORUM-005) ──
//
// Per `sub/provability-roadmap.md` §1.3 the §14.4 quorum needs four
// strata: Semantic (Lean), Symbolic (Kani), Runtime (diff_exec), and
// Extrinsic (humans). The first three are already gated in CI; this
// CLI exposes the Extrinsic count by treating each work-item mention
// of a contract ID in `roadmap.yaml` as one human attestation. The
// roadmap is the canonical record of what humans/agents committed to
// doing on the project — referencing a contract there is at minimum
// a "this contract was load-bearing for some piece of work" vote.

/// One contract's attestation tally — discovered IDs and the mentions
/// found in the roadmap.
#[derive(Debug)]
struct ContractAttestation {
    id: String,
    // Every `(work_item_id, line_no, snippet)` mention. A single
    // work item can contribute multiple mentions (title + description
    // + acceptance criteria all count). The snippet is the trimmed
    // line so the human reader can see the context.
    mentions: Vec<AttestationMention>,
}

#[derive(Debug)]
struct AttestationMention {
    /// The `id:` of the enclosing work item — usually `PMAT-NNN`.
    /// Empty string if the mention appears outside any work-item
    /// block (rare; would mean a top-level YAML key).
    work_item: String,
    line: usize,
    snippet: String,
}

#[derive(Debug)]
struct AttestationReport {
    contracts_scanned: usize,
    roadmap_path: PathBuf,
    contracts: Vec<ContractAttestation>,
    /// Contracts found in `contracts/` whose ID was not referenced
    /// anywhere in the roadmap. Surface so a future audit can spot
    /// "zombie contracts" — defined but unworked.
    unattested: Vec<String>,
}

fn attestations(roadmap_path: &Path, contracts_dir: &Path, json: bool) -> Result<()> {
    let ids = collect_contract_ids(contracts_dir)
        .with_context(|| format!("collect contract ids from {}", contracts_dir.display()))?;
    if ids.is_empty() {
        bail!(
            "no contract IDs discovered under {} — expected at least one *.yaml file \
             with a `metadata.id:` field",
            contracts_dir.display()
        );
    }
    let roadmap = std::fs::read_to_string(roadmap_path)
        .with_context(|| format!("read roadmap {}", roadmap_path.display()))?;
    let mut contracts: Vec<ContractAttestation> = Vec::new();
    let mut unattested: Vec<String> = Vec::new();
    for id in &ids {
        let mentions = scan_roadmap_for_id(&roadmap, id);
        if mentions.is_empty() {
            unattested.push(id.clone());
        } else {
            contracts.push(ContractAttestation {
                id: id.clone(),
                mentions,
            });
        }
    }
    // Stable output: sort by ID (helps diffs and JSON tooling).
    contracts.sort_by(|a, b| a.id.cmp(&b.id));
    unattested.sort();
    let report = AttestationReport {
        contracts_scanned: ids.len(),
        roadmap_path: roadmap_path.to_path_buf(),
        contracts,
        unattested,
    };
    if json {
        print_attestations_json(&report);
    } else {
        print_attestations_text(&report);
    }
    Ok(())
}

/// Walk `contracts_dir` for `*.yaml` files and pull each one's
/// `metadata.id:` value out. Uses a lightweight line scanner rather
/// than serde_yaml to keep the xpile bin's dep graph small (same
/// posture as `refinement_proofs.rs`'s `extract_quoted_value` helper).
fn collect_contract_ids(contracts_dir: &Path) -> Result<Vec<String>> {
    if !contracts_dir.is_dir() {
        bail!("{} is not a directory", contracts_dir.display());
    }
    let mut out = Vec::new();
    for entry in std::fs::read_dir(contracts_dir)? {
        let entry = entry?;
        let path = entry.path();
        if !path.is_file() {
            continue;
        }
        if path.extension().and_then(|s| s.to_str()) != Some("yaml") {
            continue;
        }
        let Ok(contents) = std::fs::read_to_string(&path) else {
            continue;
        };
        if let Some(id) = extract_metadata_id(&contents) {
            out.push(id);
        }
    }
    out.sort();
    out.dedup();
    Ok(out)
}

/// Extract a contract's `metadata.id:` value. Strategy: find the
/// `metadata:` block (must be at column 0), then look for the first
/// `  id:` line within it. Returns `None` if missing or malformed.
fn extract_metadata_id(contents: &str) -> Option<String> {
    let mut in_metadata = false;
    for line in contents.lines() {
        if line.starts_with("metadata:") {
            in_metadata = true;
            continue;
        }
        if in_metadata {
            // End of metadata block when a new top-level key appears.
            if !line.starts_with(' ') && !line.is_empty() && !line.starts_with('#') {
                return None;
            }
            let trimmed = line.trim_start();
            if let Some(rest) = trimmed.strip_prefix("id:") {
                let raw = rest.trim().trim_matches('"').trim_matches('\'');
                if !raw.is_empty() {
                    return Some(raw.to_string());
                }
            }
        }
    }
    None
}

/// Scan the roadmap text for occurrences of `id`. Each occurrence
/// is paired with the enclosing work item's `id:` (e.g. `PMAT-029`)
/// and the line number. The roadmap is a flat YAML list under
/// `roadmap:`, with each item starting at column 2 (`- id: PMAT-...`).
fn scan_roadmap_for_id(roadmap: &str, contract_id: &str) -> Vec<AttestationMention> {
    let mut out = Vec::new();
    let mut current_item: String = String::new();
    for (idx, line) in roadmap.lines().enumerate() {
        // Detect a new work item header: `- id: PMAT-NNN`.
        if let Some(rest) = line.strip_prefix("- id: ") {
            current_item = rest.trim().to_string();
        }
        if line.contains(contract_id) {
            out.push(AttestationMention {
                work_item: current_item.clone(),
                line: idx + 1,
                snippet: line.trim().to_string(),
            });
        }
    }
    out
}

fn print_attestations_text(report: &AttestationReport) {
    println!("xpile attestations — Extrinsic stratum vote tally (XPILE-QUORUM-005)");
    println!(
        "scanned {} contract ID(s) from contracts/; mentions read from {}",
        report.contracts_scanned,
        report.roadmap_path.display()
    );
    println!();
    if report.contracts.is_empty() {
        println!("  (no attestations found)");
    } else {
        for c in &report.contracts {
            let unique_items: std::collections::BTreeSet<&str> =
                c.mentions.iter().map(|m| m.work_item.as_str()).collect();
            println!(
                "  {:<40}  {:>3} mentions across {:>2} work item(s)",
                c.id,
                c.mentions.len(),
                unique_items.len()
            );
            for w in &unique_items {
                println!("      - {w}");
            }
        }
    }
    if !report.unattested.is_empty() {
        println!();
        println!(
            "  unattested contracts ({}) — defined under contracts/ but never \
             referenced in roadmap.yaml:",
            report.unattested.len()
        );
        for u in &report.unattested {
            println!("    - {u}");
        }
    }
    println!();
    let total_mentions: usize = report.contracts.iter().map(|c| c.mentions.len()).sum();
    let attested = report.contracts.len();
    println!(
        "totals: {attested}/{} contracts attested, {total_mentions} total mention(s)",
        report.contracts_scanned
    );
    println!(
        "stratum: Extrinsic — per ruchy 5.0 §14.4, this counts toward the N-of-M oracle quorum \
         alongside Semantic (Lean), Symbolic (Kani), Runtime (diff_exec)."
    );
}

fn print_attestations_json(report: &AttestationReport) {
    // Hand-rolled JSON, same posture as `print_audit_json`. Schema:
    //   {
    //     "contracts_scanned": N,
    //     "roadmap_path": "...",
    //     "contracts": [{
    //       "id": "...", "mention_count": N,
    //       "work_items": [...],
    //       "mentions": [{"work_item": "...", "line": N, "snippet": "..."}]
    //     }],
    //     "unattested": ["...", ...]
    //   }
    let mut first = true;
    print!(
        "{{\"contracts_scanned\":{},\"roadmap_path\":\"{}\",\"contracts\":[",
        report.contracts_scanned,
        report.roadmap_path.display()
    );
    for c in &report.contracts {
        if !first {
            print!(",");
        }
        first = false;
        let unique_items: std::collections::BTreeSet<&str> =
            c.mentions.iter().map(|m| m.work_item.as_str()).collect();
        let items_json: Vec<String> = unique_items.iter().map(|w| format!("\"{w}\"")).collect();
        let mention_json: Vec<String> = c
            .mentions
            .iter()
            .map(|m| {
                format!(
                    "{{\"work_item\":\"{}\",\"line\":{},\"snippet\":\"{}\"}}",
                    m.work_item,
                    m.line,
                    escape_json(&m.snippet)
                )
            })
            .collect();
        print!(
            "{{\"id\":\"{}\",\"mention_count\":{},\"work_items\":[{}],\"mentions\":[{}]}}",
            c.id,
            c.mentions.len(),
            items_json.join(","),
            mention_json.join(",")
        );
    }
    print!("],\"unattested\":[");
    let unattested_json: Vec<String> = report
        .unattested
        .iter()
        .map(|u| format!("\"{u}\""))
        .collect();
    print!("{}", unattested_json.join(","));
    println!("]}}");
}

/// Minimal JSON-string escape. Handles backslash, double-quote, and
/// control characters that would otherwise break a one-line JSON
/// payload. Keeps the hand-rolled-JSON posture rather than pulling
/// serde_json for one field.
fn escape_json(s: &str) -> String {
    let mut out = String::with_capacity(s.len());
    for c in s.chars() {
        match c {
            '\\' => out.push_str("\\\\"),
            '"' => out.push_str("\\\""),
            '\n' => out.push_str("\\n"),
            '\r' => out.push_str("\\r"),
            '\t' => out.push_str("\\t"),
            c if (c as u32) < 0x20 => out.push_str(&format!("\\u{:04x}", c as u32)),
            c => out.push(c),
        }
    }
    out
}

#[cfg(test)]
mod attestation_tests {
    use super::*;

    #[test]
    fn extract_metadata_id_finds_canonical_id() {
        let src = "metadata:\n  id: C-FOO\n  version: \"1.0\"\n";
        assert_eq!(extract_metadata_id(src), Some("C-FOO".to_string()));
    }

    #[test]
    fn extract_metadata_id_unquoted_and_quoted() {
        assert_eq!(
            extract_metadata_id("metadata:\n  id: \"C-BAR\"\n"),
            Some("C-BAR".to_string())
        );
        assert_eq!(
            extract_metadata_id("metadata:\n  id: 'C-BAZ'\n"),
            Some("C-BAZ".to_string())
        );
    }

    #[test]
    fn extract_metadata_id_missing_returns_none() {
        assert_eq!(extract_metadata_id("metadata:\n  version: \"1.0\"\n"), None);
        assert_eq!(extract_metadata_id(""), None);
    }

    #[test]
    fn scan_roadmap_attributes_mentions_to_enclosing_work_item() {
        let yaml = "\
roadmap:
- id: PMAT-100
  title: 'unrelated'
- id: PMAT-200
  title: 'Refers to C-FOO contract'
  acceptance_criteria:
  - mentions C-FOO again in the body
- id: PMAT-300
  title: 'plain'
";
        let mentions = scan_roadmap_for_id(yaml, "C-FOO");
        assert_eq!(mentions.len(), 2);
        assert!(mentions.iter().all(|m| m.work_item == "PMAT-200"));
    }

    #[test]
    fn scan_roadmap_returns_empty_when_id_absent() {
        let yaml = "- id: PMAT-1\n  title: 'foo'\n";
        assert!(scan_roadmap_for_id(yaml, "C-NOT-PRESENT").is_empty());
    }
}

// ─── quorum: unified §14.4 four-stratum view (PMAT-033) ─────────────
//
// Per ruchy 5.0 §14.4 a contract reaches QUORUM when ≥1 oracle in ≥3
// strata votes for it. xpile's strata at v0.1.0:
//
//   Semantic    Lean refinement theorems (XPILE-REFINE-XXX)
//   Symbolic    Kani BMC harnesses (XPILE-QUORUM-001..003)
//   Runtime     diff_exec fixtures + transpile_e2e (XPILE-DIFF-XXX)
//   Extrinsic   roadmap.yaml work-item mentions (XPILE-QUORUM-005)
//
// This subcommand is a *reporter*, not a gate: it consolidates counts
// from sources the project already maintains and renders a per-contract
// table. The constituent CI gates remain authoritative for their own
// stratum.

#[derive(Debug, Clone)]
struct QuorumRow {
    id: String,
    semantic: usize,
    symbolic: usize,
    runtime: usize,
    extrinsic: usize,
}

impl QuorumRow {
    fn strata_represented(&self) -> usize {
        [self.semantic, self.symbolic, self.runtime, self.extrinsic]
            .iter()
            .filter(|&&n| n >= 1)
            .count()
    }
    fn status(&self) -> &'static str {
        match self.strata_represented() {
            0 => "UNVERIFIED",
            1 | 2 => "PARTIAL",
            _ => "QUORUM",
        }
    }
    fn total(&self) -> usize {
        self.semantic + self.symbolic + self.runtime + self.extrinsic
    }
}

fn quorum(
    contracts_dir: &Path,
    fixtures_dir: &Path,
    roadmap_path: &Path,
    json: bool,
) -> Result<()> {
    // Build a map of {id -> own-yaml-text} so we can count lean/kani
    // refs in each contract's OWN file (votes for a contract come from
    // that contract's YAML, not from neighbours mentioning it).
    if !contracts_dir.is_dir() {
        bail!("{} is not a directory", contracts_dir.display());
    }
    let mut rows: Vec<QuorumRow> = Vec::new();
    for entry in std::fs::read_dir(contracts_dir)? {
        let entry = entry?;
        let path = entry.path();
        if !path.is_file() || path.extension().and_then(|s| s.to_str()) != Some("yaml") {
            continue;
        }
        let Ok(contents) = std::fs::read_to_string(&path) else {
            continue;
        };
        let Some(id) = extract_metadata_id(&contents) else {
            continue;
        };
        rows.push(QuorumRow {
            semantic: count_field_occurrences(&contents, "lean_theorem:"),
            symbolic: count_field_occurrences(&contents, "kani_harness:"),
            runtime: count_runtime_witnesses(&id, fixtures_dir),
            extrinsic: 0, // filled below
            id,
        });
    }
    // Fill Extrinsic via the same scanner attestations() uses.
    let roadmap = std::fs::read_to_string(roadmap_path).unwrap_or_default();
    for row in rows.iter_mut() {
        row.extrinsic = scan_roadmap_for_id(&roadmap, &row.id).len();
    }
    rows.sort_by(|a, b| {
        // Sort by descending total, then by ID for stable output.
        b.total().cmp(&a.total()).then_with(|| a.id.cmp(&b.id))
    });
    if json {
        print_quorum_json(&rows);
    } else {
        print_quorum_text(&rows);
    }
    Ok(())
}

/// Count occurrences of `field_prefix` (e.g. `"lean_theorem:"`) as a
/// YAML key at any indentation. We require either the start of line or
/// whitespace-only before, then the prefix, then non-newline content.
/// Comments (`# ...`) are skipped.
fn count_field_occurrences(contents: &str, field_prefix: &str) -> usize {
    contents
        .lines()
        .filter(|line| {
            let trimmed = line.trim_start();
            !trimmed.starts_with('#') && trimmed.starts_with(field_prefix)
        })
        .count()
}

/// Count fixture files that mention `contract_id` somewhere in their
/// text. Per-fixture mentions are treated as a single vote (multiple
/// comment lines inside one fixture still count as 1, mirroring how
/// `xpile audit` treats one emitted function as one citation). Walks
/// `*.py` plus any other text files the directory contains.
fn count_runtime_witnesses(contract_id: &str, fixtures_dir: &Path) -> usize {
    if !fixtures_dir.is_dir() {
        return 0;
    }
    let mut hits = 0usize;
    if let Ok(entries) = std::fs::read_dir(fixtures_dir) {
        for entry in entries.flatten() {
            let path = entry.path();
            if !path.is_file() {
                continue;
            }
            let Ok(text) = std::fs::read_to_string(&path) else {
                continue;
            };
            if text.contains(contract_id) {
                hits += 1;
            }
        }
    }
    hits
}

fn print_quorum_text(rows: &[QuorumRow]) {
    println!("xpile quorum — §14.4 N-of-M oracle quorum (PMAT-033)");
    println!(
        "strata: Semantic (Lean) | Symbolic (Kani) | Runtime (fixtures) | Extrinsic (roadmap)"
    );
    println!();
    println!(
        "  {:<40} {:>4} {:>4} {:>4} {:>4}  {:<10}",
        "contract", "Sem", "Sym", "Run", "Ext", "status"
    );
    println!("  {}", "-".repeat(72));
    for r in rows {
        println!(
            "  {:<40} {:>4} {:>4} {:>4} {:>4}  {:<10}",
            r.id,
            r.semantic,
            r.symbolic,
            r.runtime,
            r.extrinsic,
            r.status(),
        );
    }
    println!();
    let quorum_count = rows.iter().filter(|r| r.status() == "QUORUM").count();
    let partial_count = rows.iter().filter(|r| r.status() == "PARTIAL").count();
    let unverified_count = rows.iter().filter(|r| r.status() == "UNVERIFIED").count();
    println!(
        "totals: {quorum_count} QUORUM, {partial_count} PARTIAL, {unverified_count} UNVERIFIED \
         ({} contracts total)",
        rows.len()
    );
    println!(
        "rule (ruchy 5.0 §14.4): QUORUM = ≥1 vote in ≥3 strata; PARTIAL = ≥1 vote in 1-2 strata."
    );
}

fn print_quorum_json(rows: &[QuorumRow]) {
    print!("{{\"contracts\":[");
    let mut first = true;
    for r in rows {
        if !first {
            print!(",");
        }
        first = false;
        print!(
            "{{\"id\":\"{}\",\"semantic\":{},\"symbolic\":{},\"runtime\":{},\"extrinsic\":{},\
             \"strata_represented\":{},\"status\":\"{}\"}}",
            r.id,
            r.semantic,
            r.symbolic,
            r.runtime,
            r.extrinsic,
            r.strata_represented(),
            r.status(),
        );
    }
    println!("]}}");
}

#[cfg(test)]
mod quorum_tests {
    use super::*;

    #[test]
    fn quorum_row_status_thresholds() {
        let r0 = QuorumRow {
            id: "X".into(),
            semantic: 0,
            symbolic: 0,
            runtime: 0,
            extrinsic: 0,
        };
        assert_eq!(r0.status(), "UNVERIFIED");
        let r1 = QuorumRow {
            id: "X".into(),
            semantic: 1,
            symbolic: 0,
            runtime: 0,
            extrinsic: 0,
        };
        assert_eq!(r1.status(), "PARTIAL");
        let r2 = QuorumRow {
            id: "X".into(),
            semantic: 1,
            symbolic: 1,
            runtime: 0,
            extrinsic: 0,
        };
        assert_eq!(r2.status(), "PARTIAL");
        let r3 = QuorumRow {
            id: "X".into(),
            semantic: 1,
            symbolic: 1,
            runtime: 1,
            extrinsic: 0,
        };
        assert_eq!(r3.status(), "QUORUM");
        let r4 = QuorumRow {
            id: "X".into(),
            semantic: 7,
            symbolic: 1,
            runtime: 3,
            extrinsic: 5,
        };
        assert_eq!(r4.status(), "QUORUM");
        assert_eq!(r4.total(), 16);
        assert_eq!(r4.strata_represented(), 4);
    }

    #[test]
    fn count_field_occurrences_skips_comments_and_unrelated_lines() {
        let yaml = "\
foo:
  lean_theorem: \"A\"
  # lean_theorem: \"commented out\"
  other: blah
  lean_theorem: \"B\"
bar:
  lean_theorem: \"C\"
";
        assert_eq!(count_field_occurrences(yaml, "lean_theorem:"), 3);
        assert_eq!(count_field_occurrences(yaml, "kani_harness:"), 0);
    }
}

// ─── diamond: Diamond-tier coverage reporter (PMAT-249) ──────────────
//
// Per ruchy 5.0 §14.10.5 the Diamond refinement tier captures COMBINED
// algebraic axiomatizations (monoids, groups, rings, semirings,
// equivalence relations, etc.). This subcommand walks every contract
// YAML and tallies `_diamond` lean_theorem references — each represents
// one wired Diamond theorem.
//
// The substrate's Diamond program at v0.1.0:
//   - Depth-1 UNIVERSAL: 12/12 contracts (each has at least 1 Diamond)
//   - Depth-2 UNIVERSAL: 12/12 contracts (each has at least 2 Diamonds)
//   - Depth-3 UNIVERSAL across layers: 5/5 layers (each has at least
//     one contract with at least 3 Diamonds)
//   - Depth-4 opened on 2 contracts (PyIntArith L1, CompileRustToPtxMma L5)
//
// This subcommand is a *reporter*, not a gate.

#[derive(Debug, Clone)]
struct DiamondRow {
    id: String,
    diamond_count: usize,
}

impl DiamondRow {
    fn depth_label(&self) -> &'static str {
        match self.diamond_count {
            0 => "none",
            1 => "depth-1",
            2 => "depth-2",
            3 => "depth-3",
            4 => "depth-4",
            5 => "depth-5",
            6 => "depth-6",
            7 => "depth-7",
            8 => "depth-8",
            9 => "depth-9",
            10 => "depth-10",
            11 => "depth-11",
            12 => "depth-12",
            13 => "depth-13",
            14 => "depth-14",
            15 => "depth-15",
            16 => "depth-16",
            17 => "depth-17",
            18 => "depth-18",
            19 => "depth-19",
            20 => "depth-20",
            _ => "depth-21+",
        }
    }
}

fn diamond(contracts_dir: &Path, json: bool) -> Result<()> {
    if !contracts_dir.is_dir() {
        bail!("{} is not a directory", contracts_dir.display());
    }
    let mut rows: Vec<DiamondRow> = Vec::new();
    for entry in std::fs::read_dir(contracts_dir)? {
        let entry = entry?;
        let path = entry.path();
        if !path.is_file() || path.extension().and_then(|s| s.to_str()) != Some("yaml") {
            continue;
        }
        let Ok(contents) = std::fs::read_to_string(&path) else {
            continue;
        };
        let Some(id) = extract_metadata_id(&contents) else {
            continue;
        };
        rows.push(DiamondRow {
            id,
            diamond_count: count_diamond_theorems(&contents),
        });
    }
    rows.sort_by(|a, b| {
        b.diamond_count
            .cmp(&a.diamond_count)
            .then_with(|| a.id.cmp(&b.id))
    });
    if json {
        print_diamond_json(&rows);
    } else {
        print_diamond_text(&rows);
    }
    Ok(())
}

/// Count `_diamond` references in the `lean_theorem:` field values of a
/// contract YAML. Each represents one wired Diamond theorem.
fn count_diamond_theorems(contents: &str) -> usize {
    contents
        .lines()
        .filter(|line| {
            let trimmed = line.trim_start();
            !trimmed.starts_with('#')
                && trimmed.starts_with("lean_theorem:")
                && trimmed.contains("_diamond")
        })
        .count()
}

fn print_diamond_text(rows: &[DiamondRow]) {
    println!("xpile diamond — Diamond-tier coverage (PMAT-249)");
    println!(
        "depth: 0 = none, 1 = depth-1 (1 Diamond), 2 = depth-2 (2 Diamonds), 3+ = depth-3+ (3+)"
    );
    println!();
    println!("  {:<40} {:>7}  {:<10}", "contract", "diamond", "depth");
    println!("  {}", "-".repeat(60));
    for r in rows {
        println!(
            "  {:<40} {:>7}  {:<10}",
            r.id,
            r.diamond_count,
            r.depth_label(),
        );
    }
    println!();
    let total_diamonds: usize = rows.iter().map(|r| r.diamond_count).sum();
    let depth_1_plus = rows.iter().filter(|r| r.diamond_count >= 1).count();
    let depth_2_plus = rows.iter().filter(|r| r.diamond_count >= 2).count();
    let depth_3_plus = rows.iter().filter(|r| r.diamond_count >= 3).count();
    let depth_4_plus = rows.iter().filter(|r| r.diamond_count >= 4).count();
    let depth_5_plus = rows.iter().filter(|r| r.diamond_count >= 5).count();
    let depth_6_plus = rows.iter().filter(|r| r.diamond_count >= 6).count();
    let depth_7_plus = rows.iter().filter(|r| r.diamond_count >= 7).count();
    let depth_8_plus = rows.iter().filter(|r| r.diamond_count >= 8).count();
    let depth_9_plus = rows.iter().filter(|r| r.diamond_count >= 9).count();
    let depth_10_plus = rows.iter().filter(|r| r.diamond_count >= 10).count();
    let depth_11_plus = rows.iter().filter(|r| r.diamond_count >= 11).count();
    let depth_12_plus = rows.iter().filter(|r| r.diamond_count >= 12).count();
    let depth_13_plus = rows.iter().filter(|r| r.diamond_count >= 13).count();
    let depth_14_plus = rows.iter().filter(|r| r.diamond_count >= 14).count();
    let depth_15_plus = rows.iter().filter(|r| r.diamond_count >= 15).count();
    let depth_16_plus = rows.iter().filter(|r| r.diamond_count >= 16).count();
    let depth_17_plus = rows.iter().filter(|r| r.diamond_count >= 17).count();
    let depth_18_plus = rows.iter().filter(|r| r.diamond_count >= 18).count();
    let depth_19_plus = rows.iter().filter(|r| r.diamond_count >= 19).count();
    let depth_20_plus = rows.iter().filter(|r| r.diamond_count >= 20).count();
    let depth_21_plus = rows.iter().filter(|r| r.diamond_count >= 21).count();
    println!(
        "totals: {total_diamonds} Diamond theorems across {} contracts",
        rows.len()
    );
    println!(
        "  depth-1+: {depth_1_plus} contracts, depth-2+: {depth_2_plus} contracts, \
         depth-3+: {depth_3_plus} contracts, depth-4+: {depth_4_plus} contracts, \
         depth-5+: {depth_5_plus} contracts, depth-6+: {depth_6_plus} contracts, \
         depth-7+: {depth_7_plus} contracts, depth-8+: {depth_8_plus} contracts, \
         depth-9+: {depth_9_plus} contracts, depth-10+: {depth_10_plus} contracts, \
         depth-11+: {depth_11_plus} contracts, depth-12+: {depth_12_plus} contracts, \
         depth-13+: {depth_13_plus} contracts, depth-14+: {depth_14_plus} contracts, \
         depth-15+: {depth_15_plus} contracts, depth-16+: {depth_16_plus} contracts, \
         depth-17+: {depth_17_plus} contracts, depth-18+: {depth_18_plus} contracts, \
         depth-19+: {depth_19_plus} contracts, depth-20+: {depth_20_plus} contracts, \
         depth-21+: {depth_21_plus} contracts"
    );
}

fn print_diamond_json(rows: &[DiamondRow]) {
    print!("{{\"contracts\":[");
    let mut first = true;
    for r in rows {
        if !first {
            print!(",");
        }
        first = false;
        print!(
            "{{\"id\":\"{}\",\"diamond_count\":{},\"depth\":\"{}\"}}",
            r.id,
            r.diamond_count,
            r.depth_label(),
        );
    }
    let total_diamonds: usize = rows.iter().map(|r| r.diamond_count).sum();
    let depth_1_plus = rows.iter().filter(|r| r.diamond_count >= 1).count();
    let depth_2_plus = rows.iter().filter(|r| r.diamond_count >= 2).count();
    let depth_3_plus = rows.iter().filter(|r| r.diamond_count >= 3).count();
    let depth_4_plus = rows.iter().filter(|r| r.diamond_count >= 4).count();
    let depth_5_plus = rows.iter().filter(|r| r.diamond_count >= 5).count();
    let depth_6_plus = rows.iter().filter(|r| r.diamond_count >= 6).count();
    let depth_7_plus = rows.iter().filter(|r| r.diamond_count >= 7).count();
    let depth_8_plus = rows.iter().filter(|r| r.diamond_count >= 8).count();
    let depth_9_plus = rows.iter().filter(|r| r.diamond_count >= 9).count();
    let depth_10_plus = rows.iter().filter(|r| r.diamond_count >= 10).count();
    let depth_11_plus = rows.iter().filter(|r| r.diamond_count >= 11).count();
    let depth_12_plus = rows.iter().filter(|r| r.diamond_count >= 12).count();
    let depth_13_plus = rows.iter().filter(|r| r.diamond_count >= 13).count();
    let depth_14_plus = rows.iter().filter(|r| r.diamond_count >= 14).count();
    let depth_15_plus = rows.iter().filter(|r| r.diamond_count >= 15).count();
    let depth_16_plus = rows.iter().filter(|r| r.diamond_count >= 16).count();
    let depth_17_plus = rows.iter().filter(|r| r.diamond_count >= 17).count();
    let depth_18_plus = rows.iter().filter(|r| r.diamond_count >= 18).count();
    let depth_19_plus = rows.iter().filter(|r| r.diamond_count >= 19).count();
    let depth_20_plus = rows.iter().filter(|r| r.diamond_count >= 20).count();
    let depth_21_plus = rows.iter().filter(|r| r.diamond_count >= 21).count();
    println!(
        "],\"total_diamonds\":{total_diamonds},\"contracts_total\":{},\
         \"depth_1_plus\":{depth_1_plus},\"depth_2_plus\":{depth_2_plus},\
         \"depth_3_plus\":{depth_3_plus},\"depth_4_plus\":{depth_4_plus},\
         \"depth_5_plus\":{depth_5_plus},\"depth_6_plus\":{depth_6_plus},\
         \"depth_7_plus\":{depth_7_plus},\"depth_8_plus\":{depth_8_plus},\
         \"depth_9_plus\":{depth_9_plus},\"depth_10_plus\":{depth_10_plus},\
         \"depth_11_plus\":{depth_11_plus},\"depth_12_plus\":{depth_12_plus},\
         \"depth_13_plus\":{depth_13_plus},\"depth_14_plus\":{depth_14_plus},\
         \"depth_15_plus\":{depth_15_plus},\"depth_16_plus\":{depth_16_plus},\
         \"depth_17_plus\":{depth_17_plus},\"depth_18_plus\":{depth_18_plus},\
         \"depth_19_plus\":{depth_19_plus},\"depth_20_plus\":{depth_20_plus},\
         \"depth_21_plus\":{depth_21_plus}}}",
        rows.len()
    );
}

#[cfg(test)]
mod diamond_tests {
    use super::*;

    #[test]
    fn diamond_row_depth_label() {
        let r0 = DiamondRow {
            id: "X".into(),
            diamond_count: 0,
        };
        assert_eq!(r0.depth_label(), "none");
        let r1 = DiamondRow {
            id: "X".into(),
            diamond_count: 1,
        };
        assert_eq!(r1.depth_label(), "depth-1");
        let r4 = DiamondRow {
            id: "X".into(),
            diamond_count: 4,
        };
        assert_eq!(r4.depth_label(), "depth-4");
        // PMAT-286: depth-5 opened
        let r5 = DiamondRow {
            id: "X".into(),
            diamond_count: 5,
        };
        assert_eq!(r5.depth_label(), "depth-5");
        // PMAT-290: depth-6 opened
        let r6 = DiamondRow {
            id: "X".into(),
            diamond_count: 6,
        };
        assert_eq!(r6.depth_label(), "depth-6");
        // PMAT-292: depth-7 opened
        let r7 = DiamondRow {
            id: "X".into(),
            diamond_count: 7,
        };
        assert_eq!(r7.depth_label(), "depth-7");
        // PMAT-294: depth-8 opened
        let r8 = DiamondRow {
            id: "X".into(),
            diamond_count: 8,
        };
        assert_eq!(r8.depth_label(), "depth-8");
        // PMAT-298: depth-9 opened (later refined to discrete label by PMAT-300)
        let r9 = DiamondRow {
            id: "X".into(),
            diamond_count: 9,
        };
        assert_eq!(r9.depth_label(), "depth-9");
        // PMAT-300: depth-10 opened (later refined to discrete label by PMAT-302)
        let r10 = DiamondRow {
            id: "X".into(),
            diamond_count: 10,
        };
        assert_eq!(r10.depth_label(), "depth-10");
        // PMAT-302: depth-11 opened (later refined to discrete label by PMAT-305)
        let r11 = DiamondRow {
            id: "X".into(),
            diamond_count: 11,
        };
        assert_eq!(r11.depth_label(), "depth-11");
        // PMAT-305: depth-12 opened (later refined to discrete label by PMAT-307)
        let r12 = DiamondRow {
            id: "X".into(),
            diamond_count: 12,
        };
        assert_eq!(r12.depth_label(), "depth-12");
        // PMAT-307: depth-13 opened (later refined to discrete label by PMAT-310)
        let r13 = DiamondRow {
            id: "X".into(),
            diamond_count: 13,
        };
        assert_eq!(r13.depth_label(), "depth-13");
        // PMAT-310: depth-14 opened (later refined to discrete label by PMAT-312)
        let r14 = DiamondRow {
            id: "X".into(),
            diamond_count: 14,
        };
        assert_eq!(r14.depth_label(), "depth-14");
        // PMAT-312: depth-15 opened (later refined to discrete label by PMAT-315)
        let r15 = DiamondRow {
            id: "X".into(),
            diamond_count: 15,
        };
        assert_eq!(r15.depth_label(), "depth-15");
        // PMAT-315: depth-16 opened (later refined to discrete label by PMAT-317)
        let r16 = DiamondRow {
            id: "X".into(),
            diamond_count: 16,
        };
        assert_eq!(r16.depth_label(), "depth-16");
        // PMAT-317: depth-17 opened (later refined to discrete label by PMAT-320)
        let r17 = DiamondRow {
            id: "X".into(),
            diamond_count: 17,
        };
        assert_eq!(r17.depth_label(), "depth-17");
        // PMAT-320: depth-18 opened (later refined to discrete label by PMAT-322)
        let r18 = DiamondRow {
            id: "X".into(),
            diamond_count: 18,
        };
        assert_eq!(r18.depth_label(), "depth-18");
        // PMAT-322: depth-19 opened (later refined to discrete label by PMAT-325)
        let r19 = DiamondRow {
            id: "X".into(),
            diamond_count: 19,
        };
        assert_eq!(r19.depth_label(), "depth-19");
        // PMAT-325: depth-20 opened (later refined to discrete label by PMAT-327)
        let r20 = DiamondRow {
            id: "X".into(),
            diamond_count: 20,
        };
        assert_eq!(r20.depth_label(), "depth-20");
        // PMAT-327: depth-21+ opened (FIRST DEPTH-21 in the substrate)
        let r21 = DiamondRow {
            id: "X".into(),
            diamond_count: 21,
        };
        assert_eq!(r21.depth_label(), "depth-21+");
        let r22 = DiamondRow {
            id: "X".into(),
            diamond_count: 22,
        };
        assert_eq!(r22.depth_label(), "depth-21+");
    }

    #[test]
    fn count_diamond_theorems_only_counts_diamond_refs() {
        let yaml = "\
foo:
  lean_theorem: \"a.b.add_dispatch_commutative_monoid_diamond\"
  # lean_theorem: \"a.b.commented_diamond\"
bar:
  lean_theorem: \"a.b.something_silver\"
baz:
  lean_theorem: \"a.b.division_algorithm_diamond\"
qux:
  lean_theorem: \"a.b.shift_monoid_diamond\"
";
        assert_eq!(count_diamond_theorems(yaml), 3);
    }
}