196 lines
3.8 KiB
Factor
196 lines
3.8 KiB
Factor
! Copyright (C) 2007 Chris Double.
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! See http://factorcode.org/license.txt for BSD license.
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!
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USING: kernel tools.test strings namespaces arrays sequences
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peg peg.private accessors words math accessors ;
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IN: peg.tests
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{ f } [
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"endbegin" "begin" token parse
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] unit-test
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{ "begin" "end" } [
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"beginend" "begin" token parse
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{ ast>> remaining>> } get-slots
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>string
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] unit-test
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{ f } [
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"" CHAR: a CHAR: z range parse
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] unit-test
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{ f } [
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"1bcd" CHAR: a CHAR: z range parse
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] unit-test
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{ CHAR: a } [
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"abcd" CHAR: a CHAR: z range parse ast>>
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] unit-test
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{ CHAR: z } [
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"zbcd" CHAR: a CHAR: z range parse ast>>
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] unit-test
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{ f } [
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"bad" "a" token "b" token 2array seq parse
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] unit-test
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{ V{ "g" "o" } } [
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"good" "g" token "o" token 2array seq parse ast>>
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] unit-test
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{ "a" } [
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"abcd" "a" token "b" token 2array choice parse ast>>
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] unit-test
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{ "b" } [
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"bbcd" "a" token "b" token 2array choice parse ast>>
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] unit-test
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{ f } [
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"cbcd" "a" token "b" token 2array choice parse
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] unit-test
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{ f } [
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"" "a" token "b" token 2array choice parse
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] unit-test
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{ 0 } [
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"" "a" token repeat0 parse ast>> length
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] unit-test
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{ 0 } [
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"b" "a" token repeat0 parse ast>> length
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] unit-test
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{ V{ "a" "a" "a" } } [
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"aaab" "a" token repeat0 parse ast>>
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] unit-test
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{ f } [
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"" "a" token repeat1 parse
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] unit-test
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{ f } [
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"b" "a" token repeat1 parse
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] unit-test
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{ V{ "a" "a" "a" } } [
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"aaab" "a" token repeat1 parse ast>>
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] unit-test
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{ V{ "a" "b" } } [
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"ab" "a" token optional "b" token 2array seq parse ast>>
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] unit-test
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{ V{ f "b" } } [
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"b" "a" token optional "b" token 2array seq parse ast>>
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] unit-test
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{ f } [
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"cb" "a" token optional "b" token 2array seq parse
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] unit-test
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{ V{ CHAR: a CHAR: b } } [
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"ab" "a" token ensure CHAR: a CHAR: z range dup 3array seq parse ast>>
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] unit-test
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{ f } [
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"bb" "a" token ensure CHAR: a CHAR: z range 2array seq parse
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] unit-test
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{ t } [
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"a+b"
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"a" token "+" token dup ensure-not 2array seq "++" token 2array choice "b" token 3array seq
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parse [ t ] [ f ] if
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] unit-test
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{ t } [
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"a++b"
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"a" token "+" token dup ensure-not 2array seq "++" token 2array choice "b" token 3array seq
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parse [ t ] [ f ] if
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] unit-test
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{ t } [
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"a+b"
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"a" token "+" token "++" token 2array choice "b" token 3array seq
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parse [ t ] [ f ] if
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] unit-test
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{ f } [
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"a++b"
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"a" token "+" token "++" token 2array choice "b" token 3array seq
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parse [ t ] [ f ] if
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] unit-test
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{ 1 } [
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"a" "a" token [ drop 1 ] action parse ast>>
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] unit-test
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{ V{ 1 1 } } [
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"aa" "a" token [ drop 1 ] action dup 2array seq parse ast>>
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] unit-test
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{ f } [
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"b" "a" token [ drop 1 ] action parse
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] unit-test
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{ f } [
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"b" [ CHAR: a = ] satisfy parse
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] unit-test
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{ CHAR: a } [
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"a" [ CHAR: a = ] satisfy parse ast>>
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] unit-test
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{ "a" } [
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" a" "a" token sp parse ast>>
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] unit-test
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{ "a" } [
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"a" "a" token sp parse ast>>
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] unit-test
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{ V{ "a" } } [
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"[a]" "[" token hide "a" token "]" token hide 3array seq parse ast>>
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] unit-test
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{ f } [
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"a]" "[" token hide "a" token "]" token hide 3array seq parse
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] unit-test
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{ V{ "1" "-" "1" } V{ "1" "+" "1" } } [
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[
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[ "1" token , "-" token , "1" token , ] seq* ,
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[ "1" token , "+" token , "1" token , ] seq* ,
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] choice*
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"1-1" over parse ast>> swap
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"1+1" swap parse ast>>
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] unit-test
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: expr ( -- parser )
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#! Test direct left recursion. Currently left recursion should cause a
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#! failure of that parser.
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[ expr ] delay "+" token "1" token 3seq "1" token 2choice ;
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{ V{ V{ "1" "+" "1" } "+" "1" } } [
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"1+1+1" expr parse ast>>
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] unit-test
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{ t } [
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#! Ensure a circular parser doesn't loop infinitely
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[ f , "a" token , ] seq*
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dup parsers>>
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dupd 0 swap set-nth compile word?
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] unit-test
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{ f } [
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"A" [ drop t ] satisfy [ 66 >= ] semantic parse
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] unit-test
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{ CHAR: B } [
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"B" [ drop t ] satisfy [ 66 >= ] semantic parse ast>>
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] unit-test
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