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Make pegs seq parser use short circuiting &&

db4
Chris Double 2008-07-10 22:52:15 +12:00
parent 38ae977bef
commit 51faed0945
1 changed files with 7 additions and 4 deletions
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extra/peg/peg.factor
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@ -2,8 +2,9 @@
! See http://factorcode.org/license.txt for BSD license.
USING: kernel sequences strings fry namespaces math assocs shuffle debugger io
vectors arrays math.parser math.order vectors combinators combinators.lib
combinators.short-circuit classes sets unicode.categories compiler.units parser
words quotations effects memoize accessors locals effects splitting ;
classes sets unicode.categories compiler.units parser
words quotations effects memoize accessors locals effects splitting
combinators.short-circuit combinators.short-circuit.smart ;
IN: peg
USE: prettyprint
@ -410,8 +411,10 @@ TUPLE: seq-parser parsers ;
M: seq-parser (compile) ( peg -- quot )
[
[ input-slice V{ } clone <parse-result> ] %
parsers>> unclip compiled-parser 1quotation , \ parse-seq-element , [
compiled-parser 1quotation [ merge-errors ] compose , \ parse-seq-element , ] each
[
parsers>> unclip compiled-parser 1quotation [ parse-seq-element ] curry ,
[ compiled-parser 1quotation [ merge-errors ] compose [ parse-seq-element ] curry , ] each
] { } make , \ && ,
] [ ] make ;
TUPLE: choice-parser parsers ;