giles
fc2b5e502f
Lazy module loading (Step 5 piece 6 completion): - Add define-library wrappers + import declarations to 13 source .sx files - compile-modules.js generates module-manifest.json with dependency graph - compile-modules.js strips define-library/import before bytecode compilation (VM doesn't handle these as special forms) - sx-platform.js replaces hardcoded 24-file loadWebStack() with manifest-driven recursive loader — only downloads modules the page needs - Result: 12 modules loaded (was 24), zero errors, zero warnings - Fallback to full load if manifest missing VM transpilation prep (Step 6b): - Refactor lib/vm.sx: 20 accessor functions replace raw dict access - Factor out collect-n-from-stack, collect-n-pairs, pad-n-nils helpers - bootstrap_vm.py: transpiles 9 VM logic functions to OCaml - sx_vm_ref.ml: proof that vm.sx transpiles (preamble has stubs) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
781 lines
22 KiB
Plaintext
781 lines
22 KiB
Plaintext
(import (sx dom))
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(import (sx browser))
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(import (web adapter-dom))
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(define-library (web boot-helpers)
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(export _sx-bound-prefix mark-processed! is-processed? clear-processed! callable? to-kebab sx-load-components call-expr base-env get-render-env merge-envs sx-render-with-env parse-env-attr store-env-attr resolve-mount-target remove-head-element set-sx-comp-cookie clear-sx-comp-cookie log-parse-error loaded-component-names csrf-token validate-for-request build-request-body abort-previous-target abort-previous track-controller track-controller-target new-abort-controller abort-signal apply-optimistic revert-optimistic dom-has-attr? show-indicator disable-elements clear-loading-state abort-error? promise-catch fetch-request fetch-location fetch-and-restore fetch-preload fetch-streaming dom-parse-html-document dom-body-inner-html create-script-clone cross-origin? browser-scroll-to with-transition event-source-connect event-source-listen bind-boost-link bind-boost-form bind-client-route-click sw-post-message try-parse-json strip-component-scripts extract-response-css sx-render sx-hydrate sx-process-scripts select-from-container children-to-fragment select-html-from-doc register-io-deps resolve-page-data parse-sx-data try-eval-content try-async-eval-content try-rerender-page execute-action bind-preload persist-offline-data retrieve-offline-data)
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(begin
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(define _sx-bound-prefix "_sxBound")
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(define
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mark-processed!
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(fn (el key) (host-set! el (str _sx-bound-prefix key) true)))
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(define
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is-processed?
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(fn
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(el key)
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(let ((v (host-get el (str _sx-bound-prefix key)))) (if v true false))))
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(define
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clear-processed!
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(fn (el key) (host-set! el (str _sx-bound-prefix key) nil)))
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(define
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callable?
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(fn
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(v)
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(let
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((t (type-of v)))
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(or (= t "lambda") (= t "native-fn") (= t "continuation")))))
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(define
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to-kebab
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(fn
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(s)
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"Convert camelCase to kebab-case."
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(let
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((result (list)) (i 0))
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(let
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loop
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((i 0))
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(when
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(< i (len s))
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(let
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((ch (nth s i)))
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(if
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(and (>= ch "A") (<= ch "Z"))
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(do
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(when (> i 0) (append! result "-"))
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(append! result (lower ch)))
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(append! result ch))
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(loop (+ i 1)))))
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(join "" result))))
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(define
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sx-load-components
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(fn
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(text)
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"Parse and evaluate component definitions from text."
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(when
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(and text (> (len text) 0))
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(let
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((exprs (sx-parse text)))
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(for-each (fn (expr) (cek-eval expr)) exprs)))))
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(define
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call-expr
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(fn
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(expr-text env-bindings)
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"Parse and evaluate an SX expression string."
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(let
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((exprs (sx-parse expr-text)))
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(when (not (empty? exprs)) (cek-eval (first exprs))))))
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(define
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base-env
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(fn () "Return the current global environment." (global-env)))
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(define
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get-render-env
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(fn
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(extra)
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"Get the rendering environment (global env, optionally merged with extra)."
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(let
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((env (base-env)))
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(if (and extra (not (nil? extra))) (env-merge env extra) env))))
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(define
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merge-envs
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(fn
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(a b)
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"Merge two environments."
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(if (and a b) (env-merge a b) (or a b (global-env)))))
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(define
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sx-render-with-env
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(fn
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(source extra-env)
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"Parse SX source and render to DOM fragment."
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(let
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((doc (host-global "document"))
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(frag (host-call doc "createDocumentFragment"))
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(exprs (sx-parse source)))
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(for-each
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(fn
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(expr)
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(let
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((html (render-to-html expr)))
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(when
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(and html (> (len html) 0))
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(let
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((temp (host-call doc "createElement" "template")))
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(host-set! temp "innerHTML" html)
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(host-call frag "appendChild" (host-get temp "content"))))))
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exprs)
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frag)))
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(define
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parse-env-attr
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(fn (el) "Parse data-sx-env attribute (JSON key-value pairs)." nil))
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(define store-env-attr (fn (el base new-env) nil))
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(define
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resolve-mount-target
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(fn
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(target)
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"Resolve a CSS selector string to a DOM element."
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(if (string? target) (dom-query target) target)))
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(define
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remove-head-element
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(fn
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(sel)
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"Remove a <head> element matching selector."
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(let ((el (dom-query sel))) (when el (dom-remove el)))))
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(define set-sx-comp-cookie (fn (hash) (set-cookie "sx-components" hash)))
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(define clear-sx-comp-cookie (fn () (set-cookie "sx-components" "")))
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(define
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log-parse-error
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(fn (label text err) (log-error (str "Parse error in " label ": " err))))
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(define
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loaded-component-names
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(fn
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()
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(let
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((scripts (dom-query-all (dom-body) "script[data-components]"))
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(names (list)))
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(for-each
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(fn
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(script)
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(let
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((text (or (dom-get-attr script "data-components") "")))
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(when
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(> (len text) 0)
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(for-each
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(fn
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(name)
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(when
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(> (len (trim name)) 0)
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(append! names (trim name))))
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(split text ",")))))
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scripts)
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names)))
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(define
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csrf-token
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(fn
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()
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(let
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((meta (dom-query "meta[name=\"csrf-token\"]")))
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(if meta (dom-get-attr meta "content") nil))))
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(define validate-for-request (fn (el) true))
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(define
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build-request-body
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(fn
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(el method url)
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(let
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((m (upper method)))
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(if
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(or (= m "GET") (= m "HEAD"))
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(if
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(and el (= (upper (or (dom-tag-name el) "")) "FORM"))
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(let
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((fd (host-new "FormData" el))
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(params (host-new "URLSearchParams" fd))
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(qs (host-call params "toString")))
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(dict
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"url"
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(if
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(and qs (> (len qs) 0))
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(str url (if (contains? url "?") "&" "?") qs)
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url)
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"body"
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nil
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"content-type"
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nil))
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(dict "url" url "body" nil "content-type" nil))
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(if
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(and el (= (upper (or (dom-tag-name el) "")) "FORM"))
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(let
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((enctype (or (dom-get-attr el "enctype") "application/x-www-form-urlencoded")))
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(if
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(= enctype "multipart/form-data")
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(let
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((fd (host-new "FormData" el)))
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(dict "url" url "body" fd "content-type" nil))
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(let
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((fd (host-new "FormData" el))
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(params (host-new "URLSearchParams" fd)))
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(dict
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"url"
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url
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"body"
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(host-call params "toString")
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"content-type"
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"application/x-www-form-urlencoded"))))
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(dict "url" url "body" nil "content-type" nil))))))
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(define abort-previous-target (fn (el) nil))
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(define abort-previous (fn (el) nil))
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(define track-controller (fn (el ctrl) nil))
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(define track-controller-target (fn (el ctrl) nil))
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(define new-abort-controller (fn () (host-new "AbortController")))
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(define abort-signal (fn (ctrl) (host-get ctrl "signal")))
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(define apply-optimistic (fn (el) nil))
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(define revert-optimistic (fn (el) nil))
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(define dom-has-attr? (fn (el name) (host-call el "hasAttribute" name)))
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(define
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show-indicator
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(fn
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(el)
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(let
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((indicator-sel (dom-get-attr el "sx-indicator")))
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(when
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indicator-sel
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(let
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((indicator (dom-query indicator-sel)))
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(when
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indicator
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(dom-remove-class indicator "hidden")
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(dom-add-class indicator "sx-indicator-visible"))))
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indicator-sel)))
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(define
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disable-elements
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(fn
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(el)
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(let
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((disable-sel (dom-get-attr el "sx-disabled-elt")))
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(if
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disable-sel
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(let
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((elts (dom-query-all (dom-body) disable-sel)))
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(for-each (fn (e) (dom-set-attr e "disabled" "")) elts)
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elts)
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(list)))))
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(define
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clear-loading-state
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(fn
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(el indicator disabled-elts)
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(dom-remove-class el "sx-request")
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(dom-remove-attr el "aria-busy")
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(when
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indicator
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(let
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((ind (dom-query indicator)))
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(when
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ind
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(dom-add-class ind "hidden")
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(dom-remove-class ind "sx-indicator-visible"))))
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(when
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disabled-elts
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(for-each (fn (e) (dom-remove-attr e "disabled")) disabled-elts))))
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(define abort-error? (fn (err) (= (host-get err "name") "AbortError")))
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(define
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promise-catch
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(fn (p f) (let ((cb (host-callback f))) (host-call p "catch" cb))))
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(define
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fetch-request
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(fn
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(config success-fn error-fn)
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(let
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((url (get config "url"))
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(method (or (get config "method") "GET"))
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(headers (or (get config "headers") (dict)))
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(body (get config "body"))
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(signal (get config "signal"))
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(preloaded (get config "preloaded")))
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(if
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preloaded
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(success-fn true 200 (fn (name) nil) preloaded)
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(let
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((h (host-new "Headers")) (js-opts (host-new "Object")))
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(for-each
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(fn (k) (host-call h "set" k (get headers k)))
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(keys headers))
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(host-set! js-opts "method" method)
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(host-set! js-opts "headers" h)
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(when body (host-set! js-opts "body" body))
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(when signal (host-set! js-opts "signal" signal))
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(promise-then
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(host-call (dom-window) "fetch" url js-opts)
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(fn
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(response)
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(let
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((ok (host-get response "ok"))
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(status (host-get response "status"))
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(get-header
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(fn
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(name)
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(host-call (host-get response "headers") "get" name))))
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(promise-then
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(host-call response "text")
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(fn (text) (success-fn ok status get-header text))
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error-fn)))
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error-fn))))))
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(define
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fetch-location
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(fn
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(url)
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(let
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((target (or (dom-query "[sx-boost]") (dom-query "#main-panel"))))
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(when target (browser-navigate url)))))
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(define
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fetch-and-restore
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(fn
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(main url headers scroll-y)
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(fetch-request
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(dict "url" url "method" "GET" "headers" headers "body" nil "signal" nil)
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(fn
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(resp-ok status get-header text)
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(when
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resp-ok
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(let
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((ct (or (get-header "content-type") "")))
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(if
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(contains? ct "text/html")
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(let
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((parser (host-new "DOMParser"))
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(doc (host-call parser "parseFromString" text "text/html"))
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(content (host-call doc "querySelector" "#sx-content")))
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(if
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content
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(dom-set-inner-html main (host-get content "innerHTML"))
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(dom-set-inner-html main text)))
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(let
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((container (dom-create-element "div")))
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(let
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((rendered (sx-render text)))
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(when
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rendered
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(dom-append container rendered)
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(process-oob-swaps
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container
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(fn
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(t oob (s :as string))
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(dispose-islands-in t)
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(swap-dom-nodes
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t
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(if
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(= s "innerHTML")
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(children-to-fragment oob)
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oob)
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s)
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(post-swap t)))
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(let
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((content (select-from-container container "#sx-content")))
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(if
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content
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(do
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(dispose-islands-in main)
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(dom-set-inner-html main "")
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(dom-append main content))
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(do
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(dispose-islands-in main)
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(dom-set-inner-html
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main
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(dom-get-inner-html container))))))))))
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(post-swap main)
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(host-call (dom-window) "scrollTo" 0 scroll-y)))
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(fn (err) (log-warn (str "fetch-and-restore error: " err))))))
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(define
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fetch-preload
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(fn
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(url headers cache)
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(fetch-request
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(dict "url" url "method" "GET" "headers" headers "body" nil "signal" nil)
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(fn
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(resp-ok status get-header text)
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(when resp-ok (preload-cache-set cache url text)))
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(fn (err) nil))))
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(define
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fetch-streaming
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(fn
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(target pathname headers swap-fn)
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(fetch-and-restore target pathname headers 0)))
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(define
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dom-parse-html-document
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(fn
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(text)
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(let
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((parser (host-new "DOMParser")))
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(host-call parser "parseFromString" text "text/html"))))
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(define
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dom-body-inner-html
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(fn (doc) (host-get (host-get doc "body") "innerHTML")))
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(define
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create-script-clone
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(fn
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(dead)
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(let
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((doc (host-global "document"))
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(live (host-call doc "createElement" "script")))
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(let
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((attrs (host-get dead "attributes")))
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(let
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loop
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((i 0))
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(when
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(< i (host-get attrs "length"))
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(let
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((attr (host-call attrs "item" i)))
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(host-call
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live
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"setAttribute"
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(host-get attr "name")
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(host-get attr "value"))
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(loop (+ i 1))))))
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(host-set! live "textContent" (host-get dead "textContent"))
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live)))
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(define
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cross-origin?
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(fn
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(url)
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(if
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(or (starts-with? url "http://") (starts-with? url "https://"))
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(not (starts-with? url (browser-location-origin)))
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false)))
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(define
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browser-scroll-to
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(fn (x y) (host-call (dom-window) "scrollTo" x y)))
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(define
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with-transition
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(fn
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(enabled thunk)
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(if
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(and enabled (host-get (host-global "document") "startViewTransition"))
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(host-call
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(host-global "document")
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"startViewTransition"
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(host-callback thunk))
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(thunk))))
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(define
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event-source-connect
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(fn
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(url el)
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(let
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((source (host-new "EventSource" url)))
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(host-set! source "_sxElement" el)
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source)))
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(define
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event-source-listen
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(fn
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(source event-name handler)
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(host-call
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source
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"addEventListener"
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event-name
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(host-callback (fn (e) (handler e))))))
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(define
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bind-boost-link
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(fn
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(el href)
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(dom-listen
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el
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"click"
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(fn
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(e)
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(when
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(not (event-modifier-key? e))
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(prevent-default e)
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(when
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(not (dom-has-attr? el "sx-get"))
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(dom-set-attr el "sx-get" href))
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(when
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(not (dom-has-attr? el "sx-push-url"))
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(dom-set-attr el "sx-push-url" "true"))
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(execute-request el nil nil))))))
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(define
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bind-boost-form
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(fn
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(form method action)
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(dom-listen
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form
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"submit"
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(fn (e) (prevent-default e) (execute-request form nil nil)))))
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(define
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bind-client-route-click
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(fn
|
|
(link href fallback-fn)
|
|
(dom-listen
|
|
link
|
|
"click"
|
|
(fn
|
|
(e)
|
|
(when
|
|
(not (event-modifier-key? e))
|
|
(prevent-default e)
|
|
(let
|
|
((boost-el (dom-query "[sx-boost]"))
|
|
(target-sel
|
|
(if
|
|
boost-el
|
|
(let
|
|
((attr (dom-get-attr boost-el "sx-boost")))
|
|
(if (and attr (not (= attr "true"))) attr "#sx-content"))
|
|
"#sx-content")))
|
|
(if
|
|
(try-client-route (url-pathname href) target-sel)
|
|
(do
|
|
(save-scroll-position)
|
|
(browser-push-state nil "" href)
|
|
(browser-scroll-to 0 0))
|
|
(do
|
|
(log-info (str "sx:route server fetch " href))
|
|
(dom-set-attr link "sx-get" href)
|
|
(dom-set-attr link "sx-target" target-sel)
|
|
(dom-set-attr link "sx-select" target-sel)
|
|
(dom-set-attr link "sx-push-url" "true")
|
|
(execute-request link nil nil)))))))))
|
|
|
|
(define sw-post-message (fn (msg) nil))
|
|
|
|
(define try-parse-json (fn (text) (json-parse text)))
|
|
|
|
(define
|
|
strip-component-scripts
|
|
(fn
|
|
(text)
|
|
(let
|
|
((result text)
|
|
(start-tag "<script type=\"text/sx\" data-components>")
|
|
(end-tag "</script>"))
|
|
(let
|
|
loop
|
|
((s result))
|
|
(let
|
|
((start-idx (index-of s start-tag)))
|
|
(if
|
|
(= start-idx -1)
|
|
(set! result s)
|
|
(let
|
|
((after-start (+ start-idx (len start-tag)))
|
|
(rest-str (slice s (+ start-idx (len start-tag)))))
|
|
(let
|
|
((end-offset (index-of rest-str end-tag)))
|
|
(if
|
|
(= end-offset -1)
|
|
(set! result s)
|
|
(let
|
|
((comp-text (slice rest-str 0 end-offset))
|
|
(before (slice s 0 start-idx))
|
|
(after (slice rest-str (+ end-offset (len end-tag)))))
|
|
(sx-load-components comp-text)
|
|
(loop (str before after)))))))))
|
|
result)))
|
|
|
|
(define
|
|
extract-response-css
|
|
(fn
|
|
(text)
|
|
(let
|
|
((result text) (start-tag "<style data-sx-css>") (end-tag "</style>"))
|
|
(let
|
|
loop
|
|
((s result))
|
|
(let
|
|
((start-idx (index-of s start-tag)))
|
|
(if
|
|
(= start-idx -1)
|
|
(set! result s)
|
|
(let
|
|
((rest-str (slice s (+ start-idx (len start-tag)))))
|
|
(let
|
|
((end-offset (index-of rest-str end-tag)))
|
|
(if
|
|
(= end-offset -1)
|
|
(set! result s)
|
|
(let
|
|
((css-text (slice rest-str 0 end-offset))
|
|
(before (slice s 0 start-idx))
|
|
(after (slice rest-str (+ end-offset (len end-tag)))))
|
|
(let
|
|
((doc (host-global "document"))
|
|
(style-el (host-call doc "createElement" "style")))
|
|
(host-set! style-el "textContent" css-text)
|
|
(dom-append-to-head style-el))
|
|
(loop (str before after)))))))))
|
|
result)))
|
|
|
|
(define
|
|
sx-render
|
|
(fn
|
|
(text)
|
|
(let
|
|
((doc (host-global "document"))
|
|
(frag (host-call doc "createDocumentFragment"))
|
|
(exprs (sx-parse text)))
|
|
(scope-push! "sx-render-markers" true)
|
|
(for-each
|
|
(fn
|
|
(expr)
|
|
(let
|
|
((result (try-catch (fn () (render-to-dom expr (get-render-env nil) nil)) (fn (err) (log-error (str "sx-render: " err)) (let ((el (dom-create-element "div" nil))) (dom-set-attr el "class" "sx-render-error") (dom-set-attr el "style" "color:red;font-size:0.875rem;padding:0.5rem;border:1px solid red;border-radius:4px;margin:0.25rem 0;") (dom-set-text-content el (str "Render error: " err)) el)))))
|
|
(when result (dom-append frag result))))
|
|
exprs)
|
|
(scope-pop! "sx-render-markers")
|
|
frag)))
|
|
|
|
(define sx-hydrate (fn (root) (sx-hydrate-elements (or root (dom-body)))))
|
|
|
|
(define
|
|
sx-process-scripts
|
|
(fn
|
|
(root)
|
|
(let
|
|
((scripts (dom-query-all (or root (dom-body)) "script[type=\"text/sx\"]")))
|
|
(for-each
|
|
(fn
|
|
(s)
|
|
(when
|
|
(not (is-processed? s "sx-script"))
|
|
(mark-processed! s "sx-script")
|
|
(let
|
|
((text (host-get s "textContent")))
|
|
(when
|
|
(and text (> (len text) 0))
|
|
(let
|
|
((exprs (sx-parse text)))
|
|
(for-each
|
|
(fn
|
|
(expr)
|
|
(try-catch
|
|
(fn () (cek-eval expr))
|
|
(fn
|
|
(err)
|
|
(log-error (str "sx-process-scripts: " err)))))
|
|
exprs))))))
|
|
scripts))))
|
|
|
|
(define
|
|
select-from-container
|
|
(fn
|
|
(container selector)
|
|
(if
|
|
selector
|
|
(let
|
|
((selected (dom-query container selector)))
|
|
(if
|
|
selected
|
|
(children-to-fragment selected)
|
|
(children-to-fragment container)))
|
|
(children-to-fragment container))))
|
|
|
|
(define
|
|
children-to-fragment
|
|
(fn
|
|
(el)
|
|
(let
|
|
((doc (host-global "document"))
|
|
(frag (host-call doc "createDocumentFragment")))
|
|
(let
|
|
loop
|
|
()
|
|
(let
|
|
((child (dom-first-child el)))
|
|
(when child (dom-append frag child) (loop))))
|
|
frag)))
|
|
|
|
(define
|
|
select-html-from-doc
|
|
(fn
|
|
(doc selector)
|
|
(if
|
|
selector
|
|
(let
|
|
((el (dom-query doc selector)))
|
|
(if el (dom-inner-html el) (dom-body-inner-html doc)))
|
|
(dom-body-inner-html doc))))
|
|
|
|
(define register-io-deps (fn (deps) nil))
|
|
|
|
(define resolve-page-data (fn (page-name params callback) nil))
|
|
|
|
(define
|
|
parse-sx-data
|
|
(fn
|
|
(text)
|
|
(if
|
|
(and text (> (len text) 0))
|
|
(let
|
|
((exprs (sx-parse text)))
|
|
(if (not (empty? exprs)) (first exprs) nil))
|
|
nil)))
|
|
|
|
(define
|
|
try-eval-content
|
|
(fn
|
|
(content-src env)
|
|
(let
|
|
((exprs (sx-parse content-src)))
|
|
(if
|
|
(empty? exprs)
|
|
nil
|
|
(let
|
|
((frag (create-fragment)))
|
|
(for-each
|
|
(fn
|
|
(expr)
|
|
(let
|
|
((result (render-to-dom expr env nil)))
|
|
(when result (dom-append frag result))))
|
|
exprs)
|
|
frag)))))
|
|
|
|
(define
|
|
try-async-eval-content
|
|
(fn (content-src env callback) (try-eval-content content-src env)))
|
|
|
|
(define try-rerender-page (fn () nil))
|
|
|
|
(define execute-action (fn () nil))
|
|
|
|
(define bind-preload (fn () nil))
|
|
|
|
(define persist-offline-data (fn () nil))
|
|
|
|
(define retrieve-offline-data (fn () nil))
|
|
|
|
|
|
))
|
|
|
|
;; Re-export to global env
|
|
(import (web boot-helpers))
|