63 lines
1.6 KiB
Factor
Executable File
63 lines
1.6 KiB
Factor
Executable File
! Copyright (C) 2008 Slava Pestov, Eduardo Cavazos.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel sequences combinators parser splitting
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quotations arrays namespaces qualified ;
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QUALIFIED: namespaces
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IN: fry
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: , "Only valid inside a fry" throw ;
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: @ "Only valid inside a fry" throw ;
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: _ "Only valid inside a fry" throw ;
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DEFER: (shallow-fry)
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: ((shallow-fry)) ( accum quot adder -- result )
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>r [ ] swap (shallow-fry) r>
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append swap dup empty? [ drop ] [
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[ swap compose ] curry append
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] if ; inline
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: (shallow-fry) ( accum quot -- result )
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dup empty? [
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drop 1quotation
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] [
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unclip {
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{ \ , [ [ curry ] ((shallow-fry)) ] }
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{ \ @ [ [ compose ] ((shallow-fry)) ] }
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! to avoid confusion, remove if fry goes core
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{ \ namespaces:, [ [ curry ] ((shallow-fry)) ] }
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[ swap >r suffix r> (shallow-fry) ]
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} case
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] if ;
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: shallow-fry ( quot -- quot' ) [ ] swap (shallow-fry) ;
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: deep-fry ( quot -- quot' )
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{ _ } last-split1 [
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[
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shallow-fry %
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[ >r ] %
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deep-fry %
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[ [ dip ] curry r> compose ] %
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] [ ] make
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] [
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shallow-fry
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] if* ;
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: fry ( quot -- quot' )
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[
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[
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dup callable? [
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[
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[ { , namespaces:, @ } member? ] subset length
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\ , <repetition> %
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]
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[ deep-fry % ] bi
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] [ namespaces:, ] if
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] each
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] [ ] make deep-fry ;
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: '[ \ ] parse-until fry over push-all ; parsing
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