d168d1195b
Replace the set!-capture-and-rebind chains extending jolt-hash (3 sites: inst-time/ host-table/records) and jolt-class (3 sites: bigdec/natives-queue/host-table) with a register-hash-arm! / register-class-arm! registry (the pattern already used by register-str-render!). The base dispatcher walks its arms — disjoint types, so order is immaterial — then falls to the base cases. The entry is stable, so the per-site (def-var! "clojure.core" "class" …) re-points are gone. Behaviour-preserving (runtime .ss, no re-mint): jinst hash, bigdec/queue/record class, record hash, and a sorted-map hashing as its plain map all verified; make test green, 0 new corpus divergences. First two of six dispatchers; get/=/pr-str follow.
129 lines
7.3 KiB
Scheme
129 lines
7.3 KiB
Scheme
;; host class tokens — a bare class name (String, Keyword, File...)
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;; evaluates to its JVM canonical-name STRING, the same value (class instance)
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;; returns, so (= String (class "x")) holds and a (defmethod m String ...) keys
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;; against a (class …) dispatch (ring.util.request does this).
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;; The analyzer resolves these names to clojure.core vars, so the back end emits
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;; (var-deref "clojure.core" "String") — def-var!'ing the canonical strings here is
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;; all that's needed at runtime.
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;;
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;; Loaded after natives-meta.ss (jolt-type) + the printer (jolt-str-render-one).
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;; (class x) — Clojure's class of a value. Scalars map to their JVM class name,
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;; matching core-class. Collections/seqs have no JVM class on this host;
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;; (str (type x)) is the clean host taxonomy and
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;; is never compared against a class token in the corpus. Records yield their
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;; ns-qualified class name (= (str (type x))). Total — never crashes.
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;; A host shim (bigdec, queue, host-table) registers its type's class name via
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;; register-class-arm! instead of set!-wrapping jolt-class (cf. register-hash-arm!).
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;; The entry is stable, so the var cell bound below stays current as arms register.
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(define jolt-class-arms '())
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(define (register-class-arm! pred handler)
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(set! jolt-class-arms (cons (cons pred handler) jolt-class-arms)))
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(define (jolt-class-base x)
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(cond
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((jolt-nil? x) jolt-nil)
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((boolean? x) "java.lang.Boolean")
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;; per-type number classes, like the JVM: integer -> Long, flonum -> Double,
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;; exact non-integer -> Ratio.
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((and (number? x) (flonum? x)) "java.lang.Double")
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((and (number? x) (exact? x) (integer? x)) "java.lang.Long")
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((and (number? x) (exact? x) (rational? x)) "clojure.lang.Ratio")
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((number? x) "java.lang.Number")
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((string? x) "java.lang.String")
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((keyword? x) "clojure.lang.Keyword")
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((symbol-t? x) "clojure.lang.Symbol")
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((jolt-atom? x) "clojure.lang.Atom")
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((char? x) "java.lang.Character")
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((regex-t? x) "java.util.regex.Pattern")
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((procedure? x) "clojure.lang.IFn")
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;; an exception value (ex-info / host-constructed throwable) reports its JVM
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;; class, so (= clojure.lang.ExceptionInfo (class e)) and clojure.test's
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;; (thrown? Class …) match (records.ss ex-info-map?/ex-info-class).
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((ex-info-map? x) (ex-info-class x))
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(else (jolt-str-render-one (jolt-type x)))))
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(define (jolt-class x)
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(let loop ((as jolt-class-arms))
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(cond ((null? as) (jolt-class-base x))
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(((caar as) x) ((cdar as) x))
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(else (loop (cdr as))))))
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(def-var! "clojure.core" "class" jolt-class)
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;; bare class-name tokens -> canonical JVM class-name strings.
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(define class-token-alist
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'(("String" . "java.lang.String") ("Number" . "java.lang.Number")
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("Boolean" . "java.lang.Boolean") ("Long" . "java.lang.Long")
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("Integer" . "java.lang.Integer") ("Double" . "java.lang.Double")
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("Object" . "java.lang.Object") ("Character" . "java.lang.Character")
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("InputStream" . "java.io.InputStream") ("OutputStream" . "java.io.OutputStream")
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("File" . "java.io.File") ("Reader" . "java.io.Reader") ("Writer" . "java.io.Writer")
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("ISeq" . "clojure.lang.ISeq") ("Keyword" . "clojure.lang.Keyword")
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("Symbol" . "clojure.lang.Symbol") ("MapEntry" . "clojure.lang.MapEntry")
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("StringReader" . "java.io.StringReader") ("StringWriter" . "java.io.StringWriter")
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("StringBuilder" . "java.lang.StringBuilder")
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("StringTokenizer" . "java.util.StringTokenizer")
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("Charset" . "java.nio.charset.Charset") ("Base64" . "java.util.Base64")
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("Exception" . "java.lang.Exception")
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("IllegalArgumentException" . "java.lang.IllegalArgumentException")
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("IllegalStateException" . "java.lang.IllegalStateException")
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("RuntimeException" . "java.lang.RuntimeException")
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("UnsupportedOperationException" . "java.lang.UnsupportedOperationException")
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("InterruptedException" . "java.lang.InterruptedException")
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("IOException" . "java.io.IOException")
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("UnknownHostException" . "java.net.UnknownHostException")
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("ConnectException" . "java.net.ConnectException")
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("SocketTimeoutException" . "java.net.SocketTimeoutException")
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("MalformedURLException" . "java.net.MalformedURLException")
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("SSLException" . "javax.net.ssl.SSLException")
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("ExceptionInfo" . "clojure.lang.ExceptionInfo")
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("IExceptionInfo" . "clojure.lang.IExceptionInfo")
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("Pattern" . "java.util.regex.Pattern")
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("URI" . "java.net.URI") ("UUID" . "java.util.UUID")
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("ArrayList" . "java.util.ArrayList") ("PersistentQueue" . "clojure.lang.PersistentQueue")
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("NumberFormatException" . "java.lang.NumberFormatException")
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("ArithmeticException" . "java.lang.ArithmeticException")
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("NullPointerException" . "java.lang.NullPointerException")
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("ClassCastException" . "java.lang.ClassCastException")
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("IndexOutOfBoundsException" . "java.lang.IndexOutOfBoundsException")
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("UnsupportedEncodingException" . "java.io.UnsupportedEncodingException")
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("FileNotFoundException" . "java.io.FileNotFoundException")
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("Throwable" . "java.lang.Throwable")))
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(for-each
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(lambda (pair) (def-var! "clojure.core" (car pair) (cdr pair)))
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class-token-alist)
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;; resolve a ^Type hint symbol-name to its canonical class name at def time:
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;; "String" -> "java.lang.String", matching the JVM compiler. An
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;; already-canonical name maps to itself; an unknown name yields #f (left as-is).
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(define class-hint-table (make-hashtable string-hash string=?))
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(for-each (lambda (p) (hashtable-set! class-hint-table (car p) (cdr p))) class-token-alist)
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(for-each (lambda (p) (hashtable-set! class-hint-table (cdr p) (cdr p))) class-token-alist)
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(define (resolve-class-hint name) (hashtable-ref class-hint-table name #f))
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(def-var! "jolt.host" "resolve-class-hint" resolve-class-hint)
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;; fully-qualified canonical class names self-evaluate to their own name string,
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;; so (= (class 1) java.lang.Long) and (instance? clojure.lang.Atom x) resolve the
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;; class token (= what jolt-class / instance-check key on).
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;; Value classes only — NOT the collection interfaces (ISeq/IPersistentMap/...),
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;; which downstream code (e.g. SCI) references as protocols/interfaces.
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(for-each
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(lambda (nm) (def-var! "clojure.core" nm nm))
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'("java.lang.Long" "java.lang.Integer" "java.lang.Double" "java.lang.Float"
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"java.lang.Number" "java.lang.String" "java.lang.Boolean" "java.lang.Character"
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"java.lang.Object"
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;; exception classes compared against (class e): (= java.net.SocketTimeoutException (class e))
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"java.lang.Exception" "java.lang.Throwable" "java.lang.RuntimeException"
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"java.lang.IllegalArgumentException" "java.lang.IllegalStateException"
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"java.lang.UnsupportedOperationException" "java.io.IOException"
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"java.net.UnknownHostException" "java.net.ConnectException"
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"java.net.SocketTimeoutException" "java.net.MalformedURLException"
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"javax.net.ssl.SSLException"
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"java.lang.NumberFormatException" "java.lang.ArithmeticException"
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"java.lang.NullPointerException" "java.lang.ClassCastException"
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"java.lang.IndexOutOfBoundsException" "java.io.FileNotFoundException"
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"java.io.UnsupportedEncodingException"
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;; clojure.lang.ExceptionInfo / IExceptionInfo compared against (class e)
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"clojure.lang.ExceptionInfo" "clojure.lang.IExceptionInfo"
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"java.util.regex.Pattern" "java.net.URI" "java.util.UUID"
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"clojure.lang.PersistentQueue"
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"clojure.lang.Keyword" "clojure.lang.Symbol" "clojure.lang.Ratio" "clojure.lang.Atom"))
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