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definition module C

from Data.Maybe import :: Maybe

from Arduino import :: Button
from Util import class print

:: Signedness = Sig | Unsig

:: CType
	= CTChar Signedness
	| CTBool
	| CTInt Signedness
	| CTLong Signedness
	| CTVoid
	| CTArray CType
	| CTStruct String

:: CExpr
	= CEButton Button
	| CEGlobal String
	| CEInfix String CExpr CExpr
	| CEApp String [CExpr]
	| CEBool Bool
	| CEInt Int
	| CEChar Char
	| CEBArray Int [Bool]
	| CEIArray Int [Int]
	| CEIf CExpr CExpr CExpr
	| CERef CExpr
	| CEDeref CExpr
	| CEStruct [(String, CExpr)]

:: CBody
	= CBReturn (Maybe CExpr)
	| CBIf CExpr CBody CBody
	| CBWhile CExpr CBody
	| CBAssign String CExpr
	| CBSeq CBody CBody
	| CBEmpty
	| CBExpr CExpr

(`seq`) infix 0 :: CBody CBody -> CBody

:: CVar =
	{ name  :: String
	, type  :: CType
	, value :: CExpr
	}

:: CFun =
	{ params :: [(Int, CType)]
	, body   :: CBody
	, fresh  :: Int
	, type   :: CType
	, name   :: String
	}

:: CG t p = CG (CFun -> (t, CFun))

unCG :: (CG t p) -> CFun -> (t, CFun)
cg :: (CG t p) -> CFun

(>>-) infixl 1 :: (CG a p) (a -> CG b q) -> CG b q
return :: (a -> CG a p)

instance print Signedness
instance print CType
instance print CExpr
instance print CBody
instance print CVar
instance print CFun