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t27core: nested arrays and list initializers, byte-identical to gen-c (Closes #7361) - #7374
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…Closes #7361) P1 slice 3 of the self-hosted core (Part of #5980). - A 1-D array global takes a list `[_]T{ e, ... }`, and a 2-D global `[N][M]T` takes rows `[_][M]T{ [_]T{ e, ... }, ... }`; the core writes `T a[N][M] = { { e, ... }, ... };` as gen-c does. a[i][j] reads, stores and op= work in functions and tests. - Refused with E_ARRAY, since gen-c lowers them with loss or Zig refuses them: the nested repeat and a repeated row (#7353), a list or row whose item count is not its dimension, a named dimension with a list, a `_` in an inner dimension, a mismatched inner dimension or row type, a row or whole array used as a scalar. Three dimensions stay refused. - `defer` stays refused: gen-c writes it as a comment and the call never runs (#7352). Fixture e2_defer_call. - The core sits at its 64 KiB source buffer (t27b's repeat cap). Node array reads go through accessors and comments are tightened to fit: S is 65341 bytes. - t27core_ddc.t27 repinned to S (65341 bytes) and E (62437 bytes). Checked on the t27c lab: 16 core tests pass, fixpoint holds, the three accept fixtures are byte-identical and run, 29 refusals give their codes, corpus differential 61 files with no mismatch. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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…counter (Refs #7307) After the second master merge (#7374, #7360, #7365), these three specs' gen-c differs under this branch's compiler only by `for (int ` -> `for (size_t `, so the Railway t27c lab resealed them (6 files with twins). Lab check on the merge tree f4edb20 vs master fe1c866: - gen-c corpus: 132 of 1538 specs change, all counter-type only; no exit-code change - seal-currency stale list after reseal = master's 13 (all ledgered in tools/seal_baseline.txt) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Closes #7361
Part of #5980
P1 slice 3 of the self-hosted core: nested arrays and list initializers.
deferstays refused, because gen-c drops the deferred call (#7352).What the core learns
[_]T{ e, ... }with a trailing comma allowed. The elements are any expressions in the subset: names, constants,_-separated and hex numbers, operators.[N][M]Ttakes rows:[_][M]T{ [_]T{ e, ... }, ... }. The core writesT a[N][M] = { { e, ... }, ... };, which is the bytest27c gen-cwrites.a[i][j]reads, stores andop=work in functions and in tests.What the core refuses
e9_nested_repeat,e9_nested_repeated_rowe9_list_too_short,e9_row_count_shorte9_list_too_long,e9_row_too_longe9_named_dimension_liste9_separator_in_inner_dimensiona[1][1_0](#7318)e9_inner_dimension_mismatch,e9_row_type_mismatche9_row_used_as_value,e9_nested_array_as_valuee3_three_dimensionse2_defer_calldeferas a comment, so the call never runs (#7352)Size
The core is at its source buffer. SRC_MAX is 65536, which is t27b's repeat-initializer cap. To fit, node-array reads go through seven one-line accessors (
na(n)fornd_a[n as usize], and so on), two dead text functions are removed, and comments are tightened. S is 65341 bytes. The next slice needs the cap raised, or the buffers split.Other changes
compiler.rschange, so no foreign label is needed.forandswitchare untouched.t27core_ddc.t27is repinned:41a73cd5...;4e6424a4....Decoding its data reproduces both files byte for byte.
Checked on the t27c lab
accept/nested_arrays.t27is byte-identical with gen-c, and its test binary (-std=c99 -DT27_TEST_MAIN) exits 0.cargo test --release -p t27c --test core_selfhostpasses, and so do specs-parse and specs-generate.🤖 Generated with Claude Code