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Use a mock sentinel for MARK instead of a gensym #216

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merged 1 commit into from
May 29, 2023
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Use a mock sentinel for MARK instead of a gensym #216

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10 changes: 6 additions & 4 deletions src/hissp/macros.lissp
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Original file line number Diff line number Diff line change
Expand Up @@ -2039,9 +2039,9 @@ except ModuleNotFoundError:pass"
``@`` ROLL (default depth 2)
Pops (at depth) and pushes.
``]`` MARK (default depth 0)
Inserts a sentinel gensym for PACK (at depth).
Inserts a sentinel object for PACK (at depth).
``[`` PACK
Pops to the first sentinel and pushes as tuple.
Pops to the first MARK and pushes as tuple.
With depth, looks tuple up on the next element.
``*`` SPLAT
Pops (at depth) and pushes elements.
Expand Down Expand Up @@ -2244,12 +2244,14 @@ except ModuleNotFoundError:pass"
.#"&" `(.append ,'$#stack (,'XY#.#"X[-1-Y]" ,'$#stack ,(depth Y)))
.#"@" `(.append ,'$#stack (.pop ,'$#stack ,(op#sub -2 (depth Y))))
.#"[" `(.append ,'$#stack
(-<>> (tuple (iter ,'$#stack.pop ','$#\]))
(-<>> (tuple (iter ,'$#stack.pop
(getattr unittest.mock..sentinel
"hissp.]")))
,@(when Y `(op#itemgetter
(:<> (,'$#stack.pop))))))
.#"]" `(.insert ,'$#stack
(op#sub (len ,'$#stack) ,(depth Y))
','$#\])
(getattr unittest.mock..sentinel "hissp.]"))
.#"*" `(.extend ,'$#stack
(reversed (tuple (.pop ,'$#stack
,(op#sub -1 (depth Y))))))
Expand Down