2 Commits
Author SHA1 Message Date
Brad Arant b0cadc3f08 Multi-day accumulated fixes: tag dispatch, session/pooling correctness, SPA rollout, jetc compiler
JetCore engine (Tag.cpp/.h, Global.cpp/.h, __*.cpp tag classes):
- Numerous __mysql.cpp connection-pooling correctness fixes (stale
  result sets, double-indirection sessionid bugs, field caching,
  pool keying) and a session-registration-before-connection-confirmed
  ordering fix (dangling pointer on a failed connect)
- Tag.cpp: large body of fixes to the tag-dispatch/container-scanning
  logic (bare-name fallback, database aliasing, single-quote handling,
  @-prefix session variable resolution, TAGDEF caching, nested split-tag
  scanning for if/while/until/ifrow so an inner one doesn't corrupt an
  outer one's own boundary scan) plus the process-first rendering
  order fix (a <process> now runs before <checksession>/page
  resolution, fixing a real "blank page after successful login" bug)
- Global.h/.cpp: added imapSessions (parallel to the existing __mysql*
  session map) for the new <imap> tag family
- __whiledir.cpp/__include.cpp: caching and directory-name-aliasing
  fixes
- __call.cpp/.h: fixed a dangling-pointer bug
- __write.cpp: fixed an O_WRONLY-only open that couldn't create a new
  file
- __ifrow.cpp/__sql.cpp: fixed the same sessionid double-indirection
  bug __mysql.cpp had (resolveKeyword's result was being used as a map
  key lookup instead of the resolved value itself)

jetc compiler (jetc/JetParser.cpp/.h, JetCodegen.cpp/.h, JetAST.h,
jetc.cpp, build-shared.sh, build-compiled.sh):
- Parser fixes: inline <include>, nested-quote handling, void-tag
  recognition
- Codegen fixes and expanded AST support
- build-shared.sh: atomic rename into place for a freshly-built .jtc
  (a live server dlopen()ing the same path mid-rebuild was corrupting
  its own already-mapped view of the old file) and a staleness check
  so a cached JetCore .o doesn't silently keep serving yesterday's
  fixes forever
- Added -lssl to both build scripts' link lines (needed once the new
  <imap> tag's client-side TLS code existed - previously nothing in
  this codebase used OpenSSL's SSL/TLS client API, only libcrypto)

Site content (jetc/barant-site/): SPA (fetch-and-swap navigation)
rollout across essentially every .page/.jet/.section/.tag/.proc/.method
file - dynamic-content fixes, fragment-mode stripping, native
$[@name] session variables replacing older mechanisms, and this
session's own checkout.page redesign, login start-param redirect fix,
and per-page side-menu (menu.bar/$[PAGE].menu) refresh support.
Completed the earlier main.css/control.css move from assets/ to
assets/images/ (git still showed the old paths as tracked-but-deleted
until now).

Deliberately left out of this commit: dozens of .pre-<description>-
<date> manual backup files (this session's and earlier ones' own
before/after snapshots, not meant for permanent history), compiled
.jtc build outputs, ad hoc test binaries and scripts under jetc/
(login_asan, wcwc_test, optest2_bin, etc.), and jetc/__pycache__/ -
none of these are meant to be tracked; a .gitignore covering them
would be worth adding separately.
2026-09-03 05:20:48 +00:00
Brad ArantandClaude Sonnet 5 d52ca61250 Add jetc: a prototype JET-to-C++ compiler, plus the Tag API it needed
jetc (JetCore/jetc/) compiles a subset of JET template syntax - literal
text, $[...]/#[...] variable output, <set>, <if>/<else>, <for>, <while> -
into a standalone C++ program that links against CoreUtils and the same
JetCore tag-class library jet-2.0 itself uses. The static tag/text
structure becomes real C++ control flow (if/for/while), resolved once at
build time instead of being re-scanned character-by-character from raw
source on every request and, for loop bodies, on every single iteration
(confirmed by reading Tag::parseContainer - it re-tokenizes its container
text from scratch every time it runs, since a tag's parse and its
execution are the same pass in this codebase). Anything genuinely
dynamic - variable values, expr/value comparisons, loop bounds - still
calls into the existing runtime (Tag::getVariable/resolveKeyword,
jet::Operand) exactly as the interpreter does; compiling doesn't try to
eliminate that; only the repeated re-parsing of the template's own shape.

A <if type="..."> or <while type="..."> comparison type is resolved to
its C++ operator once at compile time (type is a literal attribute value
in practice, not runtime data) instead of being re-checked against six
string constants on every evaluation.

Any tag jetc doesn't have a codegen rule for (mysql, sql, call, include,
a <set> with a container body, etc.) is captured as its exact raw source
span and handed to the existing interpreter at compiled-program runtime
via the new Tag::interpretSpan(), so an unsupported construct degrades
gracefully instead of failing to compile - a real, if narrower, program
rather than requiring full tag coverage up front.

Tag.h/.cpp: made assignVariable public (parallel to the already-public
getVariable - generated code needs a write path without being a Tag
subclass) and added interpretSpan() as the fallback's entry point into
parseContainer.

Verified live: two representative templates (jetc/demo.jet, an if/for/set
walkthrough; jetc/demo2.jet, a nested <if> inside a <for>, a <while> that
mutates and rereads its own condition variable across iterations, and a
fallback-interpreted <comment> tag) both compile, link, run standalone,
and produce byte-identical output to jet-2.0 running the same source.
Building and running jetc/demo2.jet's <while> loop surfaced a real,
previously-unknown MString bug (fixed separately, see CoreUtils commit
6e4e463) along with a separate, already-existing bug in __while.cpp's
value1/value2/type form (unrelated to this compiler, not fixed here -
see project memory).

jetc/build-compiled.sh builds the compiler and a given .jet file's
compiled binary in one step; jetc/demo.jet and demo2.jet are kept as
worked examples. Known limitations: <set> with a container body isn't
modeled (falls back to interpretation); a fallback-interpreted tag
nested inside compiled control flow uses the template's single top-level
scope for parent/local context rather than a faithful per-level chain,
which only matters for legacy tags that rely on nested "local" scoping.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-23 19:18:41 -07:00