) where
IMP_Ubiq(){-uitous-}
+IMPORT_1_3(Ratio)
-- friends:
-import PrimRep ( PrimRep(..) ) -- non-abstract
+import PrimRep ( PrimRep(..), ppPrimRep ) -- non-abstract
import TysPrim ( getPrimRepInfo,
addrPrimTy, intPrimTy, floatPrimTy,
doublePrimTy, charPrimTy, wordPrimTy )
import CStrings ( stringToC, charToC, charToEasyHaskell )
import TysWiredIn ( stringTy )
import Pretty -- pretty-printing stuff
-import PprStyle ( PprStyle(..), codeStyle )
-import Util ( thenCmp, panic )
+import Outputable ( PprStyle(..), codeStyle, ifaceStyle, Outputable(..) )
+import Util ( thenCmp, panic, pprPanic, Ord3(..) )
+#if __GLASGOW_HASKELL__ >= 202
+import Type
+#endif
\end{code}
So-called @Literals@ are {\em either}:
data Literal
= MachChar Char
| MachStr FAST_STRING
+
| MachAddr Integer -- whatever this machine thinks is a "pointer"
+
| MachInt Integer -- for the numeric types, these are
Bool -- True <=> signed (Int#); False <=> unsigned (Word#)
+
| MachFloat Rational
| MachDouble Rational
+
| MachLitLit FAST_STRING
PrimRep
- | NoRepStr FAST_STRING -- the uncommitted ones
- | NoRepInteger Integer Type{-save what we learned in the typechecker-}
- | NoRepRational Rational Type{-ditto-}
+ | NoRepStr FAST_STRING
+ | NoRepInteger Integer Type -- This Type is always Integer
+ | NoRepRational Rational Type -- This Type is always Rational
+ -- We keep these Types in the literal because Rational isn't
+ -- (currently) wired in, so we can't conjure up its type out of
+ -- thin air. Integer is, so the type here is really redundant.
-- deriving (Eq, Ord): no, don't want to compare Types
-- The Ord is needed for the FiniteMap used in the lookForConstructor
The boring old output stuff:
\begin{code}
-ppCast :: PprStyle -> FAST_STRING -> Pretty
-ppCast PprForC cast = ppPStr cast
-ppCast _ _ = ppNil
+ppCast :: PprStyle -> FAST_STRING -> Doc
+ppCast PprForC cast = ptext cast
+ppCast _ _ = empty
+
+-- MachX (i.e. unboxed) things are printed unadornded (e.g. 3, 'a', "foo")
+-- exceptions: MachFloat and MachAddr get an initial keyword prefix
+--
+-- NoRep things get an initial keyword prefix (e.g. _integer_ 3)
instance Outputable Literal where
ppr sty (MachChar ch)
= case sty of
PprForC -> charToC ch
PprForAsm _ _ -> charToC ch
- PprUnfolding -> charToEasyHaskell ch
+ PprInterface -> charToEasyHaskell ch
_ -> [ch]
in
- ppBeside (ppBesides [ppCast sty SLIT("(C_)"), ppChar '\'', ppStr char_encoding, ppChar '\''])
- (if_ubxd sty)
+ hcat [ppCast sty SLIT("(C_)"), char '\'', text char_encoding, char '\'']
ppr sty (MachStr s)
- = ppBeside (if codeStyle sty
- then ppBesides [ppChar '"', ppStr (stringToC (_UNPK_ s)), ppChar '"']
- else ppStr (show (_UNPK_ s)))
- (if_ubxd sty)
+ | codeStyle sty = hcat [char '"', text (stringToC (_UNPK_ s)), char '"']
+ | otherwise = text (show (_UNPK_ s))
+
+ ppr sty lit@(NoRepStr s)
+ | codeStyle sty = pprPanic "NoRep in code style" (ppr PprDebug lit)
+ | otherwise = hcat [ptext SLIT("_string_ "), text (show (_UNPK_ s))]
- ppr sty (MachAddr p) = ppBesides [ppCast sty SLIT("(void*)"), ppInteger p, if_ubxd sty]
ppr sty (MachInt i signed)
- | codeStyle sty
- && ((signed && (i >= toInteger minInt && i <= toInteger maxInt))
- || (not signed && (i >= toInteger 0 && i <= toInteger maxInt)))
- -- ToDo: Think about these ranges!
- = ppBesides [ppInteger i, if_ubxd sty]
-
- | not (codeStyle sty) -- we'd prefer the code to the error message
- = ppBesides [ppInteger i, if_ubxd sty]
-
- | otherwise
- = error ("ERROR: Int " ++ show i ++ " out of range [" ++
- show range_min ++ " .. " ++ show maxInt ++ "]\n")
+ | codeStyle sty && out_of_range
+ = panic ("ERROR: Int " ++ show i ++ " out of range [" ++
+ show range_min ++ " .. " ++ show range_max ++ "]\n")
+
+ | otherwise = integer i
+
where
range_min = if signed then minInt else 0
+ range_max = maxInt
+ out_of_range = not (i >= toInteger range_min && i <= toInteger range_max)
- ppr sty (MachFloat f) = ppBesides [ppCast sty SLIT("(StgFloat)"), ppRational f, if_ubxd sty]
- ppr sty (MachDouble d) = ppBesides [ppRational d, if_ubxd sty, if_ubxd sty]
+ ppr sty (MachFloat f)
+ | codeStyle sty = hcat [ppCast sty SLIT("(StgFloat)"), rational f]
+ | otherwise = hcat [ptext SLIT("_float_ "), rational f]
- ppr sty (NoRepInteger i _)
- | codeStyle sty = ppInteger i
- | ufStyle sty = ppCat [ppStr "_NOREP_I_", ppInteger i]
- | otherwise = ppBesides [ppInteger i, ppChar 'I']
+ ppr sty (MachDouble d) = rational d
- ppr sty (NoRepRational r _)
- | ufStyle sty = ppCat [ppStr "_NOREP_R_", ppInteger (numerator r), ppInteger (denominator r)]
- | codeStyle sty = panic "ppr.ForC.NoRepRational"
- | otherwise = ppBesides [ppRational r, ppChar 'R']
+ ppr sty (MachAddr p)
+ | codeStyle sty = hcat [ppCast sty SLIT("(void*)"), integer p]
+ | otherwise = hcat [ptext SLIT("_addr_ "), integer p]
- ppr sty (NoRepStr s)
- | codeStyle sty = ppBesides [ppStr (show (_UNPK_ s))]
- | ufStyle sty = ppCat [ppStr "_NOREP_S_", ppStr (show (_UNPK_ s))]
- | otherwise = ppBesides [ppStr (show (_UNPK_ s)), ppChar 'S']
-
- ppr sty (MachLitLit s k)
- | codeStyle sty = ppPStr s
- | ufStyle sty = ppBesides [ppStr "``", ppPStr s, ppStr "'' _K_ ", ppr sty k]
- | otherwise = ppBesides [ppStr "``", ppPStr s, ppStr "''"]
+ ppr sty lit@(NoRepInteger i _)
+ | codeStyle sty = pprPanic "NoRep in code style" (ppr PprDebug lit)
+ | otherwise = hsep [ptext SLIT("_integer_ "), integer i]
-ufStyle PprUnfolding = True
-ufStyle _ = False
+ ppr sty lit@(NoRepRational r _)
+ | codeStyle sty = pprPanic "NoRep in code style" (ppr PprDebug lit)
+ | otherwise = hsep [ptext SLIT("_rational_ "), integer (numerator r), integer (denominator r)]
-if_ubxd sty = if codeStyle sty then ppNil else ppChar '#'
+ ppr sty (MachLitLit s k)
+ | codeStyle sty = ptext s
+ | otherwise = hcat [ptext SLIT("_litlit_ "), ppPrimRep k, char ' ', text (show (_UNPK_ s))]
showLiteral :: PprStyle -> Literal -> String
-
-showLiteral sty lit = ppShow 80 (ppr sty lit)
+showLiteral sty lit = show (ppr sty lit)
\end{code}
+
projects / ghc-hetmet.git / blobdiff