Files
el/lang/runtime/engram_text.h
bigmerge 678dac5efc runtime: extract engram_text.c, and repair 10 harnesses that could not link
First concern moved out of el_runtime.c under the ratchet, and the move is
deliberately small: it exists to prove the mechanism end to end before anything
large depends on it.

engram_text.{c,h} — query tokenization, candidate-token hygiene, word-boundary
matching, and the text-damage signature. Four functions, moved verbatim; only
`static` was dropped and each doc comment travelled with the code. They touch no
EL value type and no engram store type: plain C over <ctype.h>/<string.h> over
char buffers. They were never el_runtime.c's business.

  el_runtime.c   20,527 -> 20,427 lines   (BUDGET max_lines ratcheted down)
  engram fns        279 -> 275            (BUDGET max_engram_fns ratcheted down)

The Stage 1 extension point worked as designed: adding the file to
lang/runtime/SOURCES was one line, and every build path picked it up. The
Stage 2 drift guard then caught that I had NOT added it to install.sh's
standalone list — the exact class of drift it was written for, on its first
real change, before the commit rather than after a broken SDK shipped.

WHY ONLY 100 LINES, AND WHAT ACTUALLY BLOCKS THE REST

Measured, not estimated: of 273 engram-domain functions in el_runtime.c
(~9,700 lines), only 75 (~1,058 lines) can move today, and they are scattered
rather than clustered. The blocker is a single fact:

  EngramNode, EngramEdge, EngramStore, EngramLayer, EngramWal and EngramIdSlot
  are typedef'd INSIDE el_runtime.c. No sibling can see them. engram_store.h
  defines a SEPARATE serializable "node view" struct and maps between the two.

So every engram function that takes an EngramNode* — which is most of them, 109
of 273 by direct type reference — cannot compile in engram_store.c until those
types move to a shared header. That extraction is the real Stage 3 enabler and
it deserves its own change: it touches the most load-bearing struct in the
system, and doing it in the same commit as a code move would make a regression
impossible to bisect.

REPAIRED: 10 engram harnesses that had silently stopped linking

Not new breakage from this move — verified against unmodified dev, where
el_runtime.c + engram_store.c alone already failed with undefined symbols.
They had been dead for as long as el_runtime.c has been calling into the
siblings, and nothing noticed because nothing ran them.

  run_m3_parity, run_m7_traversal, run_m35_hebb_persist,
  run_interoception_p0..p5   — now build from $(scripts/el-runtime-sources.sh)
  run_wal_tests              — its two TUs #include "el_runtime.c" directly, so
                               it links the SIBLINGS ONLY; adding el_runtime.c
                               to that link line would define every symbol twice

(That #include'd .c is worth recording: the runtime does have one, in
engram/test/test_wal.c and the generated test_failloud.c.)

Verified locally — every one of these was run, not assumed:
  * m3_parity ............ PASS, incl. ASan+UBSan clean across seed/on/reboot
  * m7_traversal ......... PASS
  * m35_hebb_persist ..... PASS   (the gate over the original prod hebb bug)
  * interoception p0..p5 . PASS   (all six)
  * wal_tests ............ 66 passed, 0 failed, + fail-loud exit check
  * self-host fixpoint ... byte-identical, AND the emitted C is byte-identical
                           to the pre-move compiler output — the move changes
                           nothing the compiler produces
  * engram/src/server.el . compiles and links
  * native suites ........ 8 of 13, unchanged from before the move; the same 5
                           pre-existing failures, no regression
  * both runtime guards .. green at the new, lower budget

Also fixes a block comment left unterminated by the extraction (the deleted
range carried its closing */), restoring the compile to its single pre-existing
-Wcomment warning.
2026-08-16 16:58:18 -05:00

67 lines
3.1 KiB
C

/* engram_text.h — text handling for the engram: query tokenization, candidate
* token hygiene, word-boundary matching, and the text-damage signature.
*
* WHY THIS FILE EXISTS
* --------------------
* These functions lived in el_runtime.c, which is a 2026-05-03 build shim that
* was scheduled for deletion, never retired, and grew to 20,527 lines. They do
* not belong there: they touch no EL value type and no engram store type. They
* are plain C over <ctype.h>/<string.h> operating on char buffers, and they are
* a concern of their own — so they get a translation unit of their own.
*
* Adding a new text helper? Add it HERE, not to el_runtime.c. A new .c costs
* exactly one line in lang/runtime/SOURCES, and every build path picks it up.
* Placement is a LINK-TIME concern: the compiler cannot tell which .c a symbol
* came from (builtin_arity is an arity guard, not a dispatch table), so a
* function defined here is exactly as linkable as one defined in el_runtime.c.
*/
#ifndef ENGRAM_TEXT_H
#define ENGRAM_TEXT_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Max bytes per query token, including the NUL. */
#define ENGRAM_QTOK_LEN 256
/* Split q on whitespace into up to ENGRAM_MAX_QTOKENS distinct
* (case-insensitive) tokens. Returns the token count. Over-long tokens are
* truncated to ENGRAM_QTOK_LEN-1; over-count tokens are ignored. */
int engram_tokenize_query(const char* q, char toks[][ENGRAM_QTOK_LEN], int maxtok);
/* Trim leading/trailing non-alphanumerics, then accept only tokens whose core
* is alphanumeric plus '-' and '_' with at least 3 letters. This subsumes the
* quoted-title guard (2026-07-25) and the "<!--" flood (2026-08-03)
* structurally: markup and punctuation-bearing tokens never become
* candidates, rather than being blocklisted after the fact. */
int eg_st_clean_token(const char* raw, size_t rawlen, char* out, size_t outcap);
/* Word-boundary document frequency. engram_label_df uses istr_contains, i.e.
* SUBSTRING matching, and that is the wrong estimator for term specificity on
* short tokens: "them" hits inside "theme" and "anthem", "about" and "whole"
* come back with df 2 and 1 rather than 0. That matters here specifically
* because the min_df floor is what rejects English function words, and it can
* only do that job if their df is honestly zero. Substring df quietly handed
* them a survival ticket. Measured on the live store before this fix, "whole"
* (df=1, idf=8.76) and "about" (df=2, idf=8.36) were outscoring real topical
* terms and losing only on position — one node whose text happened to open
* with a function word would have seeded on it.
*
* engram_label_df keeps substring semantics: it is a separate published
* measure with existing callers, and changing it underneath them is not this
* change's business. */
int eg_st_label_has_word(const char* hay, const char* word);
/* Whether s carries the text-loss signature left by the \uXXXX -> '?' parser
* defect. Conservative by design; see engram_text.c for the full rationale. */
int eg_text_loss_signature(const char* s);
#ifdef __cplusplus
}
#endif
#endif /* ENGRAM_TEXT_H */