commit - /dev/null
commit + fab3f1f6d96baa1752fe19789a6612bea4e3ccfb
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blob + 7e53061603dc8609f052bbd8a3be3f5ff01ca0b1 (mode 644)
--- /dev/null
+++ README.md
+bfc -- a brainfuck compiler
+===========================
+
+bfc is a simple brainfuck compiler. It's written in Haskell because I
+hate myself and outputs QBE because why not.
+
+Usage:
+
+ $ bfc sources... > program.ssa
+ $ qbe program.ssa > program.S
+ $ cc -o program program.S && ./prog
+
+bfc reads from standard input if no arguments are given.
+
+bfc is release into the public domain.
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blob + cf65bfa5442dfa6cf9332c970fce8fb384d45dcd (mode 644)
--- /dev/null
+++ bfc.hs
+-- This is free and unencumbered software released into the public domain.
+--
+-- Anyone is free to copy, modify, publish, use, compile, sell, or
+-- distribute this software, either in source code form or as a compiled
+-- binary, for any purpose, commercial or non-commercial, and by any
+-- means.
+--
+-- In jurisdictions that recognize copyright laws, the author or authors
+-- of this software dedicate any and all copyright interest in the
+-- software to the public domain. We make this dedication for the benefit
+-- of the public at large and to the detriment of our heirs and
+-- successors. We intend this dedication to be an overt act of
+-- relinquishment in perpetuity of all present and future rights to this
+-- software under copyright law.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+-- IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+-- OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+-- ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+-- OTHER DEALINGS IN THE SOFTWARE.
+--
+-- For more information, please refer to <http://unlicense.org/>
+
+module Main where
+
+import Text.Printf
+import System.Environment as E
+
+data Token = Plus
+ | Minus
+ | Lesser
+ | Greater
+ | Point
+ | Comma
+ | BracketOpen
+ | BracketClose
+ deriving (Eq, Show)
+
+tokenize :: String -> [Token]
+tokenize (x:xs) =
+ let table = [ ('-', Minus), ('+', Plus)
+ , ('<', Lesser), ('>', Greater)
+ , ('.', Point), (',', Comma)
+ , ('[', BracketOpen), (']', BracketClose) ]
+ token = lookup x table in
+ case token of
+ Just x -> x:(tokenize xs)
+ Nothing -> tokenize xs
+tokenize _ = []
+
+data Expr = Inc
+ | Dec
+ | ShiftLeft
+ | ShiftRight
+ | Input
+ | Output
+ | Loop [Expr]
+ deriving (Eq, Show)
+
+type AST = [Expr]
+
+data State = State ([AST], [Token]) deriving (Show)
+
+initialState tokens = State ([[]], tokens)
+
+finalize (State ([x], _)) = Just x
+finalize _ = Nothing
+
+simplexpr :: Expr -> [AST] -> [Token] -> State
+simplexpr e (x:xs) tokens = State ((x ++ [e]):xs, tokens)
+
+translate :: Token -> Expr
+translate x = case x of
+ Plus -> Inc
+ Minus -> Dec
+ Lesser -> ShiftLeft
+ Greater -> ShiftRight
+ Point -> Output
+ Comma -> Input
+
+parser :: State -> Maybe State
+parser (State (stack, (x:xs))) =
+ case x of
+ BracketOpen -> parser $ State ([]:stack, xs)
+ BracketClose -> case stack of
+ (y:ys) -> parser $ simplexpr (Loop y) (ys) xs
+ _ -> Nothing
+ _ -> parser $ simplexpr (translate x) stack xs
+parser state = Just state
+
+parse :: [Token] -> Maybe AST
+parse tokens = parser (initialState tokens) >>= finalize
+
+prologue = "export function w $main() {\n" ++
+ "@start\n" ++
+ " %.1 =l alloc8 8\n" ++
+ " storel $tape, %.1"
+epilogue = " ret 0\n" ++
+ "}\n" ++
+ "data $tape = align 8 { z 4096 }"
+
+-- subset of QBE that I need to convert the AST to
+data Instruction = StoreW (Int, Int) -- storew a, b
+ | StoreL (Int, Int) -- storel a, b
+ | LoadW (Int, Int) -- a =w loadw b
+ | LoadL (Int, Int) -- a =w loadl b
+ | AddW (Int, Int, Int) -- a =w add b, c
+ | AddL (Int, Int, Int) -- a =l add b, c
+ | SubW (Int, Int, Int) -- a =w sub b, c
+ | SubL (Int, Int, Int) -- a =l sub b, c
+ | Call0 (Int, String) -- a =w call $b()
+ | Call1 (Int, String, Int) -- a =w call $b(w c)
+ | Jmp (Int) -- jmp a
+ | Jnz (Int, Int, Int) -- jnz a, @loop.b, @loop.c
+ | Label (Int) -- @loop.a
+ deriving (Eq)
+
+instance Show Instruction where
+ show x =
+ case x of
+ StoreW (a, b) -> printf " storew %%.%d, %%.%d" a b
+ StoreL (a, b) -> printf " storel %%.%d, %%.%d" a b
+ LoadW (a, b) -> printf " %%.%d =w loadw %%.%d" a b
+ LoadL (a, b) -> printf " %%.%d =l loadl %%.%d" a b
+ AddW (a, b, c) -> printf " %%.%d =w add %%.%d, %d" a b c
+ AddL (a, b, c) -> printf " %%.%d =l add %%.%d, %d" a b c
+ SubW (a, b, c) -> printf " %%.%d =w sub %%.%d, %d" a b c
+ SubL (a, b, c) -> printf " %%.%d =l sub %%.%d, %d" a b c
+ Call0 (a, fn) -> printf " %%.%d =w call $%s()" a fn
+ Call1 (a, fn, b) -> printf " %%.%d =w call $%s(w %%.%d)" a fn b
+ Jmp (a) -> printf " jmp @loop.%d" a
+ Jnz (a, b, c) -> printf " jnz %%.%d, @loop.%d, @loop.%d" a b c
+ Label (a) -> printf "@loop.%d" a
+
+-- I'm keeping the pointer to the current cell in the "%.1"
+-- intermediary. It's always there because qbe allows to
+-- storel %.X %.1
+-- even if it's a SSA.
+cell = 1
+
+compile' :: Int -> Int -> [AST] -> [[Instruction]] -> [Instruction]
+compile' n h ((x:xs):ys) trail =
+ case x of
+ Inc -> LoadL(n+1, cell) :
+ LoadW(n+2, n+1) :
+ AddW(n+3, n+2, 1) :
+ StoreW(n+3, n+1) :
+ compile' (n+3) h (xs:ys) trail
+ Dec -> LoadL(n+1, cell) :
+ LoadW(n+2, n+1) :
+ SubW(n+3, n+2, 1) :
+ StoreW(n+3, n+1) :
+ compile' (n+3) h (xs:ys) trail
+ ShiftLeft -> LoadL(n+1, cell) :
+ SubL(n+2, n+1, 4) :
+ StoreL(n+2, cell) :
+ compile' (n+2) h (xs:ys) trail
+ ShiftRight -> LoadL(n+1, cell) :
+ AddL(n+2, n+1, 4) :
+ StoreL(n+2, cell) :
+ compile' (n+2) h (xs:ys) trail
+ Input -> Call0(n+1, "getchar") :
+ LoadL(n+2, cell) :
+ StoreW(n+1, n+2) :
+ compile' (n+2) h (xs:ys) trail
+ Output -> LoadL(n+1, cell) :
+ LoadW(n+2, n+1) :
+ Call1(n+3, "putchar", n+2) :
+ compile' (n+3) h (xs:ys) trail
+ Loop (ast) -> Label(h) :
+ LoadL(n+1, cell) :
+ LoadW(n+2, n+1) :
+ Jnz(n+2, h+1, h+2) :
+ Label(h+1) :
+ compile' (n+3) (h+3) (ast:(xs:ys)) ([Jmp(h), Label(h+2)]:trail)
+compile' n h ([]:ys) (t:ts) = t ++ (compile' n h ys ts)
+compile' _ _ _ _ = []
+
+compile ast = compile' 1 1 [ast] []
+
+compileProg program = do
+ let t = parse $ tokenize program in
+ case t of
+ Just ast -> do putStrLn prologue
+ mapM_ print (compile ast)
+ putStrLn epilogue
+ Nothing -> error "Compilation failed"
+
+parseArgs [] = getContents
+parseArgs path = concat `fmap` mapM readFile path
+
+main = E.getArgs >>= parseArgs >>= compileProg
blob - /dev/null
blob + 9ec84d54e5ce9718bda83843c881e285d69c8cd0 (mode 644)
--- /dev/null
+++ examples/99bottles.bf
+> 0 in the zeroth cell
++++++++>++++++++++[<+++++>-] 57 in the first cell or "9"
++++++++>++++++++++[<+++++>-] 57 in second cell or "9"
+++++++++++ 10 in third cell
+>+++++++++ 9 in fourth cell
+
+##########################################
+### create ASCII chars in higher cells ###
+##########################################
+
+>>++++++++[<++++>-] " "
+>++++++++++++++[<+++++++>-] b
++>+++++++++++[<++++++++++>-] o
+++>+++++++++++++++++++[<++++++>-] t
+++>+++++++++++++++++++[<++++++>-] t
+>++++++++++++[<+++++++++>-] l
++>++++++++++[<++++++++++>-] e
++>+++++++++++++++++++[<++++++>-] s
+>++++++++[<++++>-] " "
++>+++++++++++[<++++++++++>-] o
+++>++++++++++[<++++++++++>-] f
+>++++++++[<++++>-] " "
+>++++++++++++++[<+++++++>-] b
++>++++++++++[<++++++++++>-] e
++>++++++++++[<++++++++++>-] e
+>+++++++++++++++++++[<++++++>-] r
+>++++++++[<++++>-] " "
++>+++++++++++[<++++++++++>-] o
+>+++++++++++[<++++++++++>-] n
+>++++++++[<++++>-] " "
+++>+++++++++++++++++++[<++++++>-] t
+++++>++++++++++[<++++++++++>-] h
++>++++++++++[<++++++++++>-] e
+>++++++++[<++++>-] " "
+++>+++++++++++++[<+++++++++>-] w
++>++++++++++++[<++++++++>-] a
+>++++++++++++[<+++++++++>-] l
+>++++++++++++[<+++++++++>-] l
+>+++++[<++>-] LF
+++>+++++++++++++++++++[<++++++>-] t
++>++++++++++++[<++++++++>-] a
++++>+++++++++++++[<++++++++>-] k
++>++++++++++[<++++++++++>-] e
+>++++++++[<++++>-] " "
++>+++++++++++[<++++++++++>-] o
+>+++++++++++[<++++++++++>-] n
++>++++++++++[<++++++++++>-] e
+>++++++++[<++++>-] " "
+>++++++++++[<++++++++++>-] d
++>+++++++++++[<++++++++++>-] o
+++>+++++++++++++[<+++++++++>-] w
+>+++++++++++[<++++++++++>-] n
+>++++++++[<++++>-] " "
++>++++++++++++[<++++++++>-] a
+>+++++++++++[<++++++++++>-] n
+>++++++++++[<++++++++++>-] d
+>++++++++[<++++>-] " "
+++>+++++++++++[<++++++++++>-] p
++>++++++++++++[<++++++++>-] a
++>+++++++++++++++++++[<++++++>-] s
++>+++++++++++++++++++[<++++++>-] s
+>++++++++[<++++>-] " "
++>+++++++++++++[<++++++++>-] i
+++>+++++++++++++++++++[<++++++>-] t
+>++++++++[<++++>-] " "
++>++++++++++++[<++++++++>-] a
+>+++++++++++++++++++[<++++++>-] r
++>+++++++++++[<++++++++++>-] o
+>+++++++++++++[<+++++++++>-] u
+>+++++++++++[<++++++++++>-] n
+>++++++++++[<++++++++++>-] d
+>+++++[<++>-] LF
++++++++++++++ CR
+
+[<]>>>> go back to fourth cell
+
+#################################
+### initiate the display loop ###
+#################################
+
+[ loop
+ < back to cell 3
+ [ loop
+ [>]<< go to last cell and back to LF
+ .. output 2 newlines
+ [<]> go to first cell
+
+ ###################################
+ #### begin display of characters###
+ ###################################
+ #
+ #.>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ #X X b o t t l e s o f b e e r
+ #.>.>.>.>.>.>.>.>.>.>.>.
+ #o n t h e w a l l N
+ #[<]> go to first cell
+ #.>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>>>>>>>>>>>>>.>
+ #X X b o t t l e s o f b e e r N
+ #.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ #t a k e o n e d o w n a n d p a s s
+ #.>.>.>.>.>.>.>.>.>.
+ #i t a r o u n d N
+ #####
+
+ [<]>> go to cell 2
+ - subtract 1 from cell 2
+ < go to cell 1
+
+ ########################
+ ### display last line ##
+ ########################
+ #
+ #.>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ #X X b o t t l e s o f b e e r
+ #.>.>.>.>.>.>.>.>.>.>.
+ #o n t h e w a l l
+ #####
+
+ [<]>>>- go to cell 3/subtract 1
+ ] end loop when cell 3 is 0
+ ++++++++++ add 10 to cell 3
+ <++++++++++ back to cell 2/add 10
+ <- back to cell 1/subtract 1
+ [>]<. go to last line/carriage return
+ [<]> go to first line
+
+########################
+### correct last line ##
+########################
+#
+#.>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+#X X b o t t l e s o f b e e r
+#.>.>.>.>.>.>.>.>.>.>.
+#o n t h e w a l l
+#####
+
+ [<]>>>>- go to cell 4/subtract 1
+] end loop when cell 4 is 0
+
+##############################################################
+### By this point verses 99\10 are displayed but to work ###
+### with the lower numbered verses in a more readable way ###
+### we initiate a new loop for verses 9{CODE} that will not ###
+### use the fourth cell at all ###
+##############################################################
+
++ add 1 to cell four (to keep it non\zero)
+<-- back to cell 3/subtract 2
+
+[ loop
+ [>]<< go to last cell and back to LF
+ .. output 2 newlines
+ [<]> go to first cell
+
+ ###################################
+ #### begin display of characters###
+ ###################################
+ #
+ #>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ # X b o t t l e s o f b e e r
+ #.>.>.>.>.>.>.>.>.>.>.>.
+ #o n t h e w a l l N
+ #[<]> go to first cell
+ #>.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>>>>>>>>>>>>>.>
+ # X b o t t l e s o f b e e r N
+ #.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ #t a k e o n e d o w n a n d p a s s
+ #.>.>.>.>.>.>.>.>.>.
+ #i t a r o u n d N
+ #####
+
+ [<]>> go to cell 2
+ - subtract 1 from cell 2
+
+ ########################
+ ### display last line ##
+ ########################
+ #
+ #.>>>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+ #X b o t t l e s o f b e e r
+ #.>.>.>.>.>.>.>.>.>.>.
+ #o n t h e w a l l
+ #####
+
+ [<]>>>- go to cell 3/subtract 1
+] end loop when cell 3 is 0
++ add 1 to cell 3 to keep it non\zero
+
+[>]<. go to last line/carriage return
+[<]> go to first line
+
+########################
+### correct last line ##
+########################
+#
+#>.>>>.>.>.>.>.>.>.>>.>.>.>.>.>.>.>.>.>
+# X b o t t l e o f b e e r
+#.>.>.>.>.>.>.>.>.>.>.<<<<.
+#o n t h e w a l l
+#####
+
+[>]<< go to last cell and back to LF
+.. output 2 newlines
+[<]> go to first line
+
+#########################
+### the final verse ##
+#########################
+#
+#>.>>>.>.>.>.>.>.>.>>.>.>.>.>.>.>.>.>.>
+# X b o t t l e o f b e e r
+#.>.>.>.>.>.>.>.>.>.>.>.
+#o n t h e w a l l N
+#[<]> go to first cell
+#>.>>>.>.>.>.>.>.>.>>.>.>.>.>.>.>.>.>>>>>>>>>>>>>.>
+# X b o t t l e o f b e e r N
+#.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+#t a k e o n e d o w n a n d p a s s
+#.>.>.>.>.>.>.>.>.>.
+#i t a r o u n d N
+#[>]< go to last line
+#<<<.<<.<<<.
+# n o
+#[<]>>>> go to fourth cell
+#>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>.>
+# b o t t l e s o f b e e r
+#.>.>.>.>.>.>.>.>.>.>.>.
+#o n t h e w a l l N
+#####fin##
+
blob - /dev/null
blob + 8fa0f72a362699262c965323c432de18935d0e1b (mode 644)
--- /dev/null
+++ examples/hello-word.bf
+++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.
blob - /dev/null
blob + 7b510ed74549dbf8bfea54f569210d55c5d988fe (mode 644)
--- /dev/null
+++ examples/mandlebrot.bf
+ A mandelbrot set fractal viewer in brainfuck written by Erik Bosman
++++++++++++++[->++>>>+++++>++>+<<<<<<]>>>>>++++++>--->>>>>>>>>>+++++++++++++++[[
+>>>>>>>>>]+[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-]>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>[-]+
+<<<<<<<+++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>>+>>>>>>>>>>>>>>>>>>>>>>>>>>
+>+<<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+[>>>>>>[>>>>>>>[-]>>]<<<<<<<<<[<<<<<<<<<]>>
+>>>>>[-]+<<<<<<++++[-[->>>>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<+++++++[-[->>>
+>>>>>>+<<<<<<<<<]>>>>>>>>>]>>>>>>+<<<<<<<<<<<<<<<<[<<<<<<<<<]>>>[[-]>>>>>>[>>>>>
+>>[-<<<<<<+>>>>>>]<<<<<<[->>>>>>+<<+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>
+[>>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<
+<<]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<[->>>>>>>+<<+<<<<<]>>>>>>>>>+++++++++++++++[[
+>>>>>>>>>]+>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[
+>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>[-<<<<+>>>>]<<<<[->>>>+<<<<<[->>[
+-<<+>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<
+<<[>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<
+[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>
+>>>>[>+>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+
+<<<<<<[->>>[-<<<+>>>]<<<[->>>+>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>
+>>>>>>>]<<<<<<<<<[>>[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<<]>>[->>>>>>>>>+<<<<<<<<<]<<
++>>>>>>>>]<<<<<<<<<[>[-]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<
+<]<+<<<<<<<<<]>>>>>>>>>[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>
+>>>>>>>>>>>>>>>>>>>>>>>]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>
+>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+>>>>>>>>>>>>>>>>>>>>>+<<<[<<<<<<
+<<<]>>>>>>>>>[>>>[-<<<->>>]+<<<[->>>->[-<<<<+>>>>]<<<<[->>>>+<<<<<<<<<<<<<[<<<<<
+<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>+<]]+>>>>[-<<<<->>>>]+<<<<[->>>>-<[-<<<+>>>]<<<[->
+>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]+>>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<
+<<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]<<<<<<<[->+>>>-<<<<]>>>>>>>>>+++++++++++++++++++
++++++++>>[-<<<<+>>>>]<<<<[->>>>+<<[-]<<]>>[<<<<<<<+<[-<+>>>>+<<[-]]>[-<<[->+>>>-
+<<<<]>>>]>>>>>>>>>>>>>[>>[-]>[-]>[-]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>[-]>>>>>>[>>>>>
+[-<<<<+>>>>]<<<<[->>>>+<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>[-<<<<<<<<
+<+>>>>>>>>>]>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>+++++++++++++++[[>>>>>>>>>]+>[-
+]>[-]>[-]>[-]>[-]>[-]>[-]>[-]>[-]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>+>>>>>>>>]<<<
+<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+>>]<
+<[->>+>+<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>[->>>>
+>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-]<->>>
+[-<<<+>[<->-<<<<<<<+>>>>>>>]<[->+<]>>>]<<[->>+<<]<+<<<<<<<<<]>>>>>>>>>[>>>>>>[-<
+<<<<+>>>>>]<<<<<[->>>>>+<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>+>>>>>>>>
+]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>->>>>>[-<<<<<+>>>>>]<<<<<[->>>>>+<<<<<<[->>[-<<+
+>>]<<[->>+>>+<<<<]+>>>>>>>>>]<<<<<<<<[<<<<<<<<<]]>>>>>>>>>[>>>>>>>>>]<<<<<<<<<[>
+[->>>>>>>>>+<<<<<<<<<]<<<<<<<<<<]>[->>>>>>>>>+<<<<<<<<<]<+>>>>>>>>]<<<<<<<<<[>[-
+]<->>>>[-<<<<+>[<->-<<<<<<+>>>>>>]<[->+<]>>>>]<<<[->>>+<<<]<+<<<<<<<<<]>>>>>>>>>
+[>>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+]>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>[-<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>
+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>++++++++
++++++++[[>>>>>>>>>]<<<<<<<<<-<<<<<<<<<[<<<<<<<<<]>>>>>>>>>-]+[>>>>>>>>[-<<<<<<<+
+>>>>>>>]<<<<<<<[->>>>>>>+<<<<<<+<]>>>>>>>>]<<<<<<<<<[<<<<<<<<<]>>>>>>>>>[>>>>>>[
+-]>>>]<<<<<<<<<[<<<<<<<<<]>>>>+>[-<-<<<<+>>>>>]>[-<<<<<<[->>>>>+<++<<<<]>>>>>[-<
+<<<<+>>>>>]<->+>]<[->+<]<<<<<[->>>>>+<<<<<]>>>>>>[-]<<<<<<+>>>>[-<<<<->>>>]+<<<<
+[->>>>->>>>>[>>[-<<->>]+<<[->>->[-<<<+>>>]<<<[->>>+<<<<<<<<<<<<[<<<<<<<<<]>>>[-]
++>>>>>>[>>>>>>>>>]>+<]]+>>>[-<<<->>>]+<<<[->>>-<[-<<+>>]<<[->>+<<<<<<<<<<<[<<<<<
+<<<<]>>>>[-]+>>>>>[>>>>>>>>>]>[-]+<]]+>[-<[>>>>>>>>>]<<<<<<<<]>>>>>>>>]<<<<<<<<<
+[<<<<<<<<<]>>>>[-<<<<+>>>>]<<<<[->>>>+>>>>>[>+>>[-<<->>]<<[->>+<<]>>>>>>>>]<<<<<
+<<<+<[>[->>>>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>>[->>>+<<<]<]>[->>>-<<<<<<<<<
+<<<<<+>>>>>>>>>>>]<<]>[->>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>>]<]>[->>>+<<<]<<
+<<<<<<<<<<]>>>>[-]<<<<]>>>[-<<<+>>>]<<<[->>>+>>>>>>[>+>[-<->]<[->+<]>>>>>>>>]<<<
+<<<<<+<[>[->>>>>+<<<[->>>-<<<<<<<<<<<<<<+>>>>>>>>>>[->>>>+<<<<]>]<[->>>>-<<<<<<<
+<<<<<<<+>>>>>>>>>>]<]>>[->>>+<<<<[->>>>-<<<<<<<<<<<<<<+>>>>>>>>>>]>]<[->>>>+<<<<
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+
