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brainfuck: Require loops to be non-empty, add test case.

db4
John Benediktsson 2009-06-07 17:39:21 -07:00
parent 4b21217956
commit 88e5397b51
2 changed files with 13 additions and 2 deletions
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13
extra/brainfuck/brainfuck-tests.factor
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@ -1,7 +1,8 @@
! Copyright (C) 2009 John Benediktsson
! See http://factorcode.org/license.txt for BSD license
USING: brainfuck io.streams.string multiline tools.test ;
USING: brainfuck kernel io.streams.string math math.parser math.ranges
multiline quotations sequences tools.test ;
[ "+" run-brainfuck ] must-infer
@ -48,4 +49,14 @@ USING: brainfuck io.streams.string multiline tools.test ;
[ "ABC" ] [ "ABC\0" [ ",[.,]" get-brainfuck ] with-string-reader ] unit-test
! Squares of numbers from 0 to 100
100 [0,b] [ dup * number>string ] map "\n" join "\n" append 1quotation
[ <" ++++[>+++++<-]>[<+++++>-]+<+[
>[>+>+<<-]++>>[<<+>>-]>>>[-]++>[-]+
>>>+[[-]++++++>>>]<<<[[<++++++++<++>>-]+<.<[>----<-]<]
<<[>>>>>[>>>[-]+++++++++<[>-<-]+++++++++>
[-[<->-]+[<<<]]<[>+<-]>]<<-]<<-] ">
get-brainfuck ] unit-test

2
extra/brainfuck/brainfuck.factor
View File

@ -61,7 +61,7 @@ space = (" "|"\t"|"\r\n"|"\n")+ => [[ [ ] ]]
unknown = (.) => [[ "Invalid input" throw ]]
ops = inc-ptr|dec-ptr|inc-mem|dec-mem|output|input|debug|space
loop = "[" {loop|ops}* "]" => [[ second compose-all 1quotation [ [ (?) ] ] prepend [ while ] append ]]
loop = "[" {loop|ops}+ "]" => [[ second compose-all 1quotation [ [ (?) ] ] prepend [ while ] append ]]
code = (loop|ops|unknown)* => [[ compose-all ]]