mirror of
https://github.com/kanaka/mal.git
synced 2024-11-11 00:52:44 +03:00
db4c329aff
Other:
- bash,make,postscript: quasiquote of vectors
- Fix Java slurp
- add time function to core.mal
- switches on *host-language* for make time-secs vs time-ms
- Ignore */experiments directories
58 lines
1.4 KiB
PostScript
58 lines
1.4 KiB
PostScript
% outer binds exprs -> env_new -> new_env
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/env_new { 3 dict begin
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%(in env_new\n) print
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/exprs exch dup _sequential? { /data get }{ pop [ ] } ifelse def
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/binds exch dup _sequential? { /data get }{ pop [ ] } ifelse def
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/outer exch def
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<<
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/__outer__ outer
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0 1 binds length 1 sub {
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/idx exch def
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binds idx get (&) eq { %if &
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binds idx 1 add get % key
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exprs idx exprs length idx sub getinterval % value
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_list_from_array
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exit
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} if
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binds idx get % key
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exprs idx get % value
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} for
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>>
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end } def
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% env key -> env_find -> env
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% env key -> env_find -> null
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/env_find { 2 dict begin
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/key exch def
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/env exch def
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env key known { %if key in env
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env
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}{ env /__outer__ get null ne { %elseif __outer__ not null
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env /__outer__ get key env_find
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}{ %else
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null
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} ifelse } ifelse
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end } def
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% env key val -> env_set -> val
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/env_set {
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dup 4 1 roll % stack: val env key val
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put % stack: val
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} def
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/env_get {
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dup 3 1 roll % stack: key env key
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env_find % stack: key env/null
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dup null eq {
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pop % stack: key
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(') exch % stack: (') key
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dup length string cvs
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(' not found)
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concatenate concatenate
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_throw
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}{
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exch % stack: env key
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get
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} ifelse
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} def
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