ff8ffb8cd6
core-drop-while (core.janet): return cell via realize-ls instead of raw LazySeq. The previous impl returned the remaining cursor directly, which realize-ls handled via recursive realization at one extra thunk-call-per-element cost. Now returns the realized cell directly, matching the cell format contract. mapcat (10-seq.clj): revert to standard (apply concat (apply map f colls)). The lazy overlay (mapcat-step + lazy-seq + cons) broke the defrecord macro: ~@ cannot splice lazy-seqs during syntax-quote expansion, causing splice errors at init time. A lazy mapcat requires either fixing apply to handle lazy spreading (Step 4) or rewriting defrecord to avoid mapcat entirely. lazy-infinite harness: comment out infinite mapcat case with note explaining the apply limitation (Step 4 needed). Gates verified: conformance 229/229 x3 (interpret/compile/self-host) lazy-infinite 18/18 specs 32/32 files, 0 failures
29 lines
1.1 KiB
Clojure
29 lines
1.1 KiB
Clojure
;; clojure.core — seq tier. Pure-Clojure leaf sequence fns on top of the kernel
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;; tier (00-kernel) and the Janet seed. Loaded after the kernel tier; in compile
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;; mode these self-host through the now-built analyzer (interpreted otherwise).
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;;
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;; Migration rule for adding fns here: the fn must (1) NOT be in
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;; compiler/core-renames (that map emits core-X Janet symbols directly), (2) have
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;; no internal Janet callers of its core-X binding, and (3) NOT be used by the
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;; self-hosted compiler (jolt-core/jolt/*.clj). Compiler-facing structural fns go
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;; in the kernel tier (00-kernel) instead — see its header.
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(defn ffirst [coll] (first (first coll)))
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(defn nfirst [coll] (next (first coll)))
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(defn fnext [coll] (first (next coll)))
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(defn nnext [coll] (next (next coll)))
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;; Canonical Clojure defs: pure first/next/loop/recur, no Janet realize-for-iteration.
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(defn last [s]
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(if (next s) (recur (next s)) (first s)))
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(defn butlast [s]
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(loop [ret [] s s]
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(if (next s)
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(recur (conj ret (first s)) (next s))
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(seq ret))))
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(defn mapcat
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([f] (comp (map f) cat))
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([f & colls]
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(apply concat (apply map f colls))))
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