bf.nova
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|# Brainfuck
the brackets are written as { } because of the January syntax.
output is stored in :output: as bits.
the input operator is not implemented.
#|
|| :: control test
|# test programs #|
| :: number 65 test |
:: start
:program: (
+ + + + + + + + + + + + + + + + + + + +
+ + + + + + + + + + + + + + + + + + + +
+ + + + + + + + + + + + + + + + + + + +
+ + + + + [.]
)
| :: overflow test |
:: start
:program: (
- - - [.] + + + + + [.]
)
| :: tape test |
:: start
:program: (
+ > + + > + + + > > - < < < - - -
< < < + + + + + + +
> > > +
)
| :: control test |
:: start
:program: (
+ + + + + { > + > + + < < - }
> [.] > [.]
)
|# interpreter #|
| :: start | :: head empty :: interpret
| :: head empty | :tape: ( 0 0 0 0 0 0 0 0 )
| :symbol: + | :: increment
| :: increment :tape: 0 | :tape: 1 :: restore number
| :: increment? :tape: 1 | :number: 0
| :: increment | :: restore number
| :symbol: - | :: decrement
| :: decrement? :tape: 0 | :number: 1
| :: decrement :tape: 1 | :tape: 0 :: restore number
| :: decrement | :: restore number
| :symbol: > | :: next cell
| :: next cell :after: ; | :tape: ; :: forward
| :: next cell | :tape: ( 0 0 0 0 0 0 0 0 ; )
| :: forward? :after: 0 | :tape: 0
| :: forward? :after: 1 | :tape: 1
| :: forward :after: ;? |
| :: forward |
| :symbol: < | :: previous cell
| :: previous cell? :tape: 0 | :after: 0
| :: previous cell? :tape: 1 | :after: 1
| :: previous cell :tape: ; | :after: ; :: head not empty
| :: previous cell | :after: ; :: refill head
| :: head not empty :tape: $x? |
| :: head not empty | :: refill head
| :: refill head | :tape: ( 0 0 0 0 0 0 0 0 )
| :: booleanise? :tape: 0 | :number: 0
| :: booleanise :tape: 1? | :boolean: true :: restore number
| :: booleanise | :boolean: false :: restore number
| :symbol: { | :: booleanise :: forward jump
| :: forward jump :boolean: true |
| :: forward jump :boolean: false | :: skip forward
| :: skip forward? :program: { | :seen: { :: skip forward
| :: skip forward :program: } | :seen: }
| :: skip forward? :program: $other | :seen: $other
| :: skip forward | :: abort :reason: bracket mismatch
| :symbol: } | :: booleanise :: backward jump
| :: backward jump :boolean: true :seen: } | :program: } :: rewind
| :: backward jump :boolean: false |
| :: rewind? :seen: } | :program: } :: rewind
| :: rewind :seen: {? |
| :: rewind? :seen: $other | :program: $other
| :: rewind | :: abort :reason: bracket mismatch
| :symbol: [.] | :: output
| :: output? :tape: 0 | :output: 0 :number: 0
| :: output? :tape: 1 | :output: 1 :number: 1
| :: output | :output: ; :: restore number
| :symbol: , | :: abort :reason: no input facility
| :symbol: $other |
| :: restore number? :number: $digit | :tape: $digit
| :: restore number |
| :: interpret? :program: $symbol | :symbol: $symbol :seen: $symbol
| :: interpret | :: done
| 1 | |# Brainfuck |
| 2 | |
| 3 | the brackets are written as { } because of the January syntax. |
| 4 | |
| 5 | output is stored in :output: as bits. |
| 6 | |
| 7 | the input operator is not implemented. |
| 8 | |
| 9 | #| |
| 10 | |
| 11 | || :: control test |
| 12 | |
| 13 | |# test programs #| |
| 14 | |
| 15 | | :: number 65 test | |
| 16 | :: start |
| 17 | :program: ( |
| 18 | + + + + + + + + + + + + + + + + + + + + |
| 19 | + + + + + + + + + + + + + + + + + + + + |
| 20 | + + + + + + + + + + + + + + + + + + + + |
| 21 | + + + + + [.] |
| 22 | ) |
| 23 | |
| 24 | | :: overflow test | |
| 25 | :: start |
| 26 | :program: ( |
| 27 | - - - [.] + + + + + [.] |
| 28 | ) |
| 29 | |
| 30 | | :: tape test | |
| 31 | :: start |
| 32 | :program: ( |
| 33 | + > + + > + + + > > - < < < - - - |
| 34 | < < < + + + + + + + |
| 35 | > > > + |
| 36 | ) |
| 37 | |
| 38 | | :: control test | |
| 39 | :: start |
| 40 | :program: ( |
| 41 | + + + + + { > + > + + < < - } |
| 42 | > [.] > [.] |
| 43 | ) |
| 44 | |
| 45 | |# interpreter #| |
| 46 | |
| 47 | | :: start | :: head empty :: interpret |
| 48 | |
| 49 | | :: head empty | :tape: ( 0 0 0 0 0 0 0 0 ) |
| 50 | |
| 51 | | :symbol: + | :: increment |
| 52 | | :: increment :tape: 0 | :tape: 1 :: restore number |
| 53 | | :: increment? :tape: 1 | :number: 0 |
| 54 | | :: increment | :: restore number |
| 55 | |
| 56 | | :symbol: - | :: decrement |
| 57 | | :: decrement? :tape: 0 | :number: 1 |
| 58 | | :: decrement :tape: 1 | :tape: 0 :: restore number |
| 59 | | :: decrement | :: restore number |
| 60 | |
| 61 | | :symbol: > | :: next cell |
| 62 | | :: next cell :after: ; | :tape: ; :: forward |
| 63 | | :: next cell | :tape: ( 0 0 0 0 0 0 0 0 ; ) |
| 64 | | :: forward? :after: 0 | :tape: 0 |
| 65 | | :: forward? :after: 1 | :tape: 1 |
| 66 | | :: forward :after: ;? | |
| 67 | | :: forward | |
| 68 | |
| 69 | | :symbol: < | :: previous cell |
| 70 | | :: previous cell? :tape: 0 | :after: 0 |
| 71 | | :: previous cell? :tape: 1 | :after: 1 |
| 72 | | :: previous cell :tape: ; | :after: ; :: head not empty |
| 73 | | :: previous cell | :after: ; :: refill head |
| 74 | | :: head not empty :tape: $x? | |
| 75 | | :: head not empty | :: refill head |
| 76 | | :: refill head | :tape: ( 0 0 0 0 0 0 0 0 ) |
| 77 | |
| 78 | | :: booleanise? :tape: 0 | :number: 0 |
| 79 | | :: booleanise :tape: 1? | :boolean: true :: restore number |
| 80 | | :: booleanise | :boolean: false :: restore number |
| 81 | |
| 82 | | :symbol: { | :: booleanise :: forward jump |
| 83 | | :: forward jump :boolean: true | |
| 84 | | :: forward jump :boolean: false | :: skip forward |
| 85 | | :: skip forward? :program: { | :seen: { :: skip forward |
| 86 | | :: skip forward :program: } | :seen: } |
| 87 | | :: skip forward? :program: $other | :seen: $other |
| 88 | | :: skip forward | :: abort :reason: bracket mismatch |
| 89 | |
| 90 | | :symbol: } | :: booleanise :: backward jump |
| 91 | | :: backward jump :boolean: true :seen: } | :program: } :: rewind |
| 92 | | :: backward jump :boolean: false | |
| 93 | | :: rewind? :seen: } | :program: } :: rewind |
| 94 | | :: rewind :seen: {? | |
| 95 | | :: rewind? :seen: $other | :program: $other |
| 96 | | :: rewind | :: abort :reason: bracket mismatch |
| 97 | |
| 98 | | :symbol: [.] | :: output |
| 99 | | :: output? :tape: 0 | :output: 0 :number: 0 |
| 100 | | :: output? :tape: 1 | :output: 1 :number: 1 |
| 101 | | :: output | :output: ; :: restore number |
| 102 | |
| 103 | | :symbol: , | :: abort :reason: no input facility |
| 104 | |
| 105 | | :symbol: $other | |
| 106 | |
| 107 | | :: restore number? :number: $digit | :tape: $digit |
| 108 | | :: restore number | |
| 109 | |
| 110 | | :: interpret? :program: $symbol | :symbol: $symbol :seen: $symbol |
| 111 | | :: interpret | :: done |
| 112 |