b1cdfd1c9b
(.method target arg*) now analyzes to a :host-call IR node instead of punting at analyze. The Chez back end lowers it to a jolt-host-call dispatch for the methods the RT shims (.write -> port display, .isDirectory -> file-directory?, .listFiles -> directory-list); any other method stays out of subset (clean emit-time reject, so it can't read as a compiled-but-broken corpus divergence). The Janet back end punts ALL :host-call to the interpreter, same shape as letfn: compiles on Chez, interprets on Janet, zero change to the main language. Closes the io tier's print-method defmethods and file-seq: prelude emit reach 348 -> 354/355 (50-io 20/20). The one remaining gap is the regex literal in parse-uuid (needs a regex engine on Chez; deferred). emit-test 122/122; Chez subset 672/672, 0 divergences; full gate green.
131 lines
6.8 KiB
Text
131 lines
6.8 KiB
Text
# Fallback-zero verification (Stage 1 Task 3).
|
|
#
|
|
# self-host-test.janet checks observable RESULTS but not WHICH path ran — a form
|
|
# that silently fell back to the interpreter still "passes" there. This harness
|
|
# checks the path: it runs the portable analyzer (jolt.analyzer/analyze, via
|
|
# backend/analyze-form) on a corpus of NON-STATEFUL forms and asserts NONE raise
|
|
# :jolt/uncompilable — i.e. the self-hosted analyzer actually COMPILED them.
|
|
#
|
|
# As analyzer↔compiler.janet parity grows (Stage 1), move forms from the
|
|
# "intentional fallback" sanity list into the must-compile corpus. The day the
|
|
# fallback set equals the frozen intentional stateful set, the Janet bootstrap
|
|
# compiler is retireable.
|
|
#
|
|
# Mechanism: backend/analyze-form throws (a "jolt/uncompilable: …" string) for a
|
|
# punted form; (protect …) turns that into [false msg]. [true ir] == compiled.
|
|
|
|
(import ../../src/jolt/backend :as backend)
|
|
(use ../../src/jolt/api)
|
|
(use ../../src/jolt/reader)
|
|
|
|
(def ctx (init-cached))
|
|
|
|
(defn- analyzes? [s]
|
|
# true if the form COMPILES end to end (analyzer IR + back end emit), false if
|
|
# it punts to the interpreter. Checks emit-ir too, not just analyze-form: letfn
|
|
# and (def x) with no init now ANALYZE to IR, but the Janet back end punts them
|
|
# at emit time (sequential let* can't express mutual recursion; an unbound var
|
|
# is not a compiled value) — so analyze-form alone would miss the real
|
|
# compile-vs-interpret decision that compile-and-eval makes.
|
|
(def r (protect (backend/emit-ir ctx (backend/analyze-form ctx (parse-string s)))))
|
|
(and (r 0) true))
|
|
|
|
# --- Must compile: pure, non-stateful value production. NONE may punt. ---
|
|
(def must-compile
|
|
[# set literals (Task 1)
|
|
"#{1 2 3}" "#{}" "#{:a :b :c}" "#{(inc 0) 2}" "(conj #{1 2} 3)"
|
|
"[#{1 2} {:s #{3}}]" "(let [x 5] #{x (inc x)})"
|
|
# other literals
|
|
"[1 2 3]" "{:a 1 :b 2}" "{:k (inc 0)}" "[[1] [2 3]]" "42" ":kw" "\"str\""
|
|
# control flow + binding
|
|
"(+ 1 2)" "(if true 1 2)" "(do 1 2 3)" "(let [a 1 b 2] (+ a b))"
|
|
"(fn [x] (* x x))" "(fn ([a] a) ([a b] (+ a b)))"
|
|
"(loop [i 0] (if (< i 3) (recur (inc i)) i))"
|
|
"(quote (a b c))" "(throw (ex-info \"x\" {}))"
|
|
"(try (inc 1) (catch :default e e))"
|
|
# def + calls into core
|
|
"(def answer 42)" "(map inc [1 2 3])" "(reduce + 0 [1 2 3])"
|
|
"(get {:a 1} :a)" "(vec (range 5))"
|
|
# set?/disj are plain fns now, not special forms (jolt-g3h)
|
|
"(set? #{1 2})" "(disj #{1 2 3} 2)"
|
|
# Stage 2 (jolt-eaa): stateful forms moved onto the compile path. (binding only
|
|
# compiles over an INTERNED var; the built-in dynamic vars aren't interned yet,
|
|
# so it's exercised end-to-end in the state spec instead.)
|
|
"(require (quote [clojure.string :as s]))" "(in-ns (quote foo.bar))"
|
|
"(ns foo.bar (:require [clojure.string :as s]))"
|
|
"(defprotocol P (m [x]))" "(extend-type Long P (m [x] x))"
|
|
"(reify P (m [this] 1))" "(var map)"
|
|
# Stage 2 tier 5: type/dispatch definitional forms compile too
|
|
"(deftype Pt [x y])" "(deftype Sq [s] P (m [this] s))"
|
|
"(defrecord Rec [a b])" "(defmulti mf :k)" "(defmethod mf :a [x] x)"
|
|
# Stage 2 tier 6: var fns are ordinary invokes now
|
|
"(var-get (var map))" "(var? (var map))" "(var-set (var map) map)"
|
|
"(alter-var-root (var map) identity)" "(find-var (quote clojure.core/map))"
|
|
"(intern (quote user) (quote tier6-sym) 42)"
|
|
"(alter-meta! (var map) assoc :k 1)" "(reset-meta! (var map) {})"
|
|
# Stage 2 tier 6b: ns-introspection fns are ordinary invokes now
|
|
"(find-ns (quote clojure.core))" "(create-ns (quote t6.created))"
|
|
"(remove-ns (quote t6.created))" "(count (all-ns))"
|
|
"(the-ns (quote clojure.core))" "(ns-interns (quote clojure.core))"
|
|
"(ns-aliases (quote user))" "(ns-imports (quote user))"
|
|
"(ns-resolve (quote clojure.core) (quote map))" "(resolve (quote map))"
|
|
"(refer (quote clojure.string))"
|
|
# Stage 2 tier 6c: dispatch-table ops + misc compile as macros/plain invokes
|
|
"(prefer-method mf :a :b)" "(remove-method mf :a)" "(remove-all-methods mf)"
|
|
# get-method/methods take the multimethod VALUE (Clojure semantics), so the
|
|
# arg must resolve — use a real multifn (print-method) rather than the
|
|
# never-defined mf the isolated analyzer can't resolve.
|
|
"(get-method print-method :default)" "(methods print-method)"
|
|
"(satisfies? P 5)" "(instance? String \"x\")" "(locking :x 1)"
|
|
"(defonce fz-once 1)" "(read-string \"[1 2]\")"
|
|
"(macroexpand-1 (quote (when true 1)))"])
|
|
|
|
# --- THE FROZEN PUNT SET (Stage 2 complete) ---------------------------------
|
|
# These are the ONLY heads that may reach the interpreter, exhaustively:
|
|
# defmacro — definitional host seam (the EXPANDERS are compiled;
|
|
# see backend/recompile-macros!)
|
|
# set! — host var-cell mutation special
|
|
# letfn — analyzes to a :letrec IR node now (inc 3g), but the Janet
|
|
# back end still punts it at emit: its sequential let* can't
|
|
# express the mutual recursion. The Chez back end DOES
|
|
# compile it (letrec*). Janet stays interpret until emit-let
|
|
# gains a letrec lowering.
|
|
# eval — compile-and-run entry (also loader stateful-head?)
|
|
# . / new / Foo. / — thin host-interop heads the back end doesn't model
|
|
# .method — analyzes to a :host-call IR node now (inc 3h), but the
|
|
# Janet back end punts it at emit (no interop model). The
|
|
# Chez back end DOES lower it (jolt-host-call). Same shape as
|
|
# letfn: compiles on Chez, interprets on Janet.
|
|
# .-field — field access stays punted at analyze (form-special?)
|
|
# gen-class, monitor-enter, monitor-exit — JVM-compat stubs
|
|
# Growing this list is a REGRESSION: a new punt means the compiler lost
|
|
# coverage. Shrinking it (e.g. letfn via letrec IR) is progress — move the
|
|
# form to must-compile.
|
|
(def must-punt
|
|
["(defmacro m [x] x)"
|
|
"(set! *warn-on-reflection* true)"
|
|
"(letfn [(f [n] (g n)) (g [n] (f n))] (f 1))"
|
|
"(eval (quote (+ 1 2)))"
|
|
# .method analyzes to :host-call now; a resolvable target ("x") makes it punt
|
|
# at EMIT (the interop reason), not at analyze (an unresolved target).
|
|
"(.toUpperCase \"x\")"
|
|
"(.-field obj)"
|
|
"(new Foo 1)"
|
|
"(Foo. 1)"
|
|
"(gen-class :name X)"
|
|
"(monitor-enter x)"
|
|
"(monitor-exit x)"])
|
|
|
|
(var fails @[])
|
|
(each s must-compile
|
|
(unless (analyzes? s) (array/push fails (string "FALLBACK (should compile): " s))))
|
|
(each s must-punt
|
|
(when (analyzes? s) (array/push fails (string "COMPILED (should punt): " s))))
|
|
|
|
(printf "fallback-zero: %d must-compile + %d must-punt — %d failures"
|
|
(length must-compile) (length must-punt) (length fails))
|
|
(when (> (length fails) 0)
|
|
(print "\nFailures:")
|
|
(each f fails (printf " %s" f))
|
|
(os/exit 1))
|
|
(print "fallback-zero: OK (analyzer compiled the full non-stateful corpus)")
|