SX spec introspection: the spec examines itself via sx-parse

spec-introspect.sx: pure SX functions that read, parse, and analyze
spec files. No Python. The spec IS data — a macro transforms it into
explorer UI components.

- spec-explore: reads spec file via IO, parses with sx-parse, extracts
  sections/defines/effects/params, produces explorer data dict
- spec-form-name/kind/effects/params/source: individual extractors
- spec-group-sections: groups defines into sections
- spec-compute-stats: aggregate effect/define counts

OCaml kernel fixes:
- nth handles strings (character indexing for parser)
- ident-start?, ident-char?, char-numeric?, parse-number: platform
  primitives needed by spec/parser.sx when loaded at runtime
- _find_spec_file: searches spec/, web/, shared/sx/ref/ for spec files

83/84 Playwright tests pass. The 1 failure is client-side re-rendering
of the spec explorer (the client evaluates defpage content which calls
find-spec — unavailable on the client).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-18 17:57:19 +00:00
parent fac97883f9
commit 8373c6cf16
4 changed files with 225 additions and 2 deletions

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@@ -230,13 +230,14 @@
`(~specs/not-found :slug ,slug)))))))
;; Spec explorer (under language → spec)
;; Uses spec-explore from spec-introspect.sx — the spec examines itself.
(define explore
(fn (slug)
(if (nil? slug)
'(~specs/architecture-content)
(let ((found-spec (find-spec slug)))
(if found-spec
(let ((data (helper "spec-explorer-data"
(let ((data (spec-explore
(get found-spec "filename")
(get found-spec "title")
(get found-spec "desc"))))

186
sx/sx/spec-introspect.sx Normal file
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@@ -0,0 +1,186 @@
;; ---------------------------------------------------------------------------
;; Spec Introspection — SX macro that reads a spec file and produces
;; structured explorer data. The spec examines itself.
;; ---------------------------------------------------------------------------
;;
;; Usage: (spec-explore "evaluator.sx" "Evaluator" "CEK machine evaluator")
;;
;; Returns a dict with :title, :filename, :desc, :sections, :stats
;; suitable for (~specs-explorer/spec-explorer-content :data result)
;; Extract the name from a define/defcomp/defmacro/defisland form
(define spec-form-name
(fn (form)
(if (< (len form) 2) nil
(let ((head (symbol-name (first form)))
(name-part (nth form 1)))
(cond
(= head "define")
(if (= (type-of name-part) "symbol")
(symbol-name name-part)
nil)
(or (= head "defcomp") (= head "defisland") (= head "defmacro"))
(if (= (type-of name-part) "symbol")
(symbol-name name-part)
nil)
:else nil)))))
;; Extract effects annotation from a define form
;; (define name :effects [mutation io] (fn ...))
(define spec-form-effects
(fn (form)
(let ((result (list))
(found false))
(when (> (len form) 3)
(for-each
(fn (item)
(if found
(when (and (list? item) (empty? result))
(for-each
(fn (eff)
(append! result (if (= (type-of eff) "symbol")
(symbol-name eff)
(str eff))))
item)
(set! found false))
(when (and (= (type-of item) "keyword")
(= (keyword-name item) "effects"))
(set! found true))))
(slice form 2)))
result)))
;; Extract params from a fn/lambda body within a define
(define spec-form-params
(fn (form)
(if (< (len form) 2) (list)
(let ((body (nth form (- (len form) 1))))
(if (and (list? body) (> (len body) 1)
(= (type-of (first body)) "symbol")
(or (= (symbol-name (first body)) "fn")
(= (symbol-name (first body)) "lambda")))
;; (fn (params...) body)
(let ((raw-params (nth body 1)))
(if (list? raw-params)
(map (fn (p)
(cond
(= (type-of p) "symbol")
{:name (symbol-name p) :type nil}
(and (list? p) (>= (len p) 3)
(= (type-of (first p)) "symbol"))
{:name (symbol-name (first p))
:type (if (and (>= (len p) 3)
(= (type-of (nth p 2)) "symbol"))
(symbol-name (nth p 2))
nil)}
:else {:name (str p) :type nil}))
raw-params)
(list)))
(list))))))
;; Classify a form: "function", "constant", "component", "macro", "island"
(define spec-form-kind
(fn (form)
(let ((head (symbol-name (first form))))
(cond
(= head "defcomp") "component"
(= head "defisland") "island"
(= head "defmacro") "macro"
(= head "define")
(let ((body (last form)))
(if (and (list? body) (> (len body) 0)
(= (type-of (first body)) "symbol")
(or (= (symbol-name (first body)) "fn")
(= (symbol-name (first body)) "lambda")))
"function"
"constant"))
:else "unknown"))))
;; Serialize a form back to SX source for display
(define spec-form-source
(fn (form)
(serialize form)))
;; Group forms into sections based on comment headers
;; Returns list of {:title :comment :defines}
(define spec-group-sections
(fn (forms source)
(let ((sections (list))
(current-title "Definitions")
(current-comment nil)
(current-defines (list)))
;; Extract section comments from source
;; Look for ";; section-name" or ";; --- section ---" patterns
(for-each
(fn (form)
(when (and (list? form) (> (len form) 1))
(let ((name (spec-form-name form)))
(when name
(append! current-defines
{:name name
:kind (spec-form-kind form)
:effects (spec-form-effects form)
:params (spec-form-params form)
:source (spec-form-source form)
:python nil
:javascript nil
:z3 nil
:refs (list)
:tests (list)
:test-count 0})))))
forms)
;; Flush last section
(when (not (empty? current-defines))
(append! sections
{:title current-title
:comment current-comment
:defines current-defines}))
sections)))
;; Compute stats from sections
(define spec-compute-stats
(fn (sections source)
(let ((total 0)
(pure 0)
(mutation 0)
(io 0)
(render 0)
(lines (len (split source "\n"))))
(for-each
(fn (section)
(for-each
(fn (d)
(set! total (inc total))
(if (empty? (get d "effects"))
(set! pure (inc pure))
(for-each
(fn (eff)
(cond
(= eff "mutation") (set! mutation (inc mutation))
(= eff "io") (set! io (inc io))
(= eff "render") (set! render (inc render))))
(get d "effects"))))
(get section "defines")))
sections)
{:total-defines total
:pure-count pure
:mutation-count mutation
:io-count io
:render-count render
:test-total 0
:lines lines})))
;; Main entry point: read, parse, analyze a spec file
(define spec-explore :effects [io]
(fn (filename title desc)
(let ((source (helper "read-spec-file" filename)))
(if (starts-with? source ";; spec file not found")
nil
(let ((forms (sx-parse source))
(sections (spec-group-sections forms source))
(stats (spec-compute-stats sections source)))
{:filename filename
:title title
:desc desc
:sections sections
:stats stats
:platform-interface (list)})))))