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optimize type range checks in freeze-to-out* (10x faster)

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This commit is contained in:
Karsten Schmidt 2015-09-15 14:17:03 +01:00
parent 140171393c
commit f2f8b419b1
1 changed files with 6 additions and 6 deletions
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12
src/taoensso/nippy.clj
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@ -162,11 +162,11 @@
(defmacro write-id [out id] `(.writeByte ~out ~id))
(defmacro write-bytes [out ba & [small?]]
(let [out (with-meta out {:tag 'java.io.DataOutput})
ba (with-meta ba {:tag 'bytes})
(let [out (with-meta out {:tag 'java.io.DataOutput})
ba (with-meta ba {:tag 'bytes})
;; Optimization, must be known before id's written
;; `byte` to throw on range error
[wc wr] (if small? [byte 'writeByte] [int 'writeInt])]
[wc wr] (if small? [byte 'writeByte] [int 'writeInt])]
`(let [out# ~out, ba# ~ba
size# (alength ba#)]
(. out# ~wr (~wc size#))
@ -292,13 +292,13 @@
Freezable
(freeze-to-out* [x ^DataOutput out]
(cond
(<= Byte/MIN_VALUE x Byte/MAX_VALUE)
(and (<= Byte/MIN_VALUE x) (<= x Byte/MAX_VALUE))
(do (write-id out id-byte-as-long) (.writeByte out x))
(<= Short/MIN_VALUE x Short/MAX_VALUE)
(and (<= Short/MIN_VALUE x) (<= x Short/MAX_VALUE))
(do (write-id out id-short-as-long) (.writeShort out x))
(<= Integer/MIN_VALUE x Integer/MAX_VALUE)
(and (<= Integer/MIN_VALUE x) (<= x Integer/MAX_VALUE))
(do (write-id out id-int-as-long) (.writeInt out x))
:else (do (write-id out id-long) (.writeLong out x)))))