%
+% (c) The University of Glasgow 2006
% (c) The AQUA Project, Glasgow University, 1996-1998
%
-%************************************************************************
-%* *
-\section[PprCore]{Printing of Core syntax, including for interfaces}
-%* *
-%************************************************************************
+
+Printing of Core syntax
\begin{code}
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
module PprCore (
pprCoreExpr, pprParendExpr,
pprCoreBinding, pprCoreBindings, pprCoreAlt,
#include "HsVersions.h"
import CoreSyn
-import CostCentre ( pprCostCentreCore )
-import Var ( Var )
-import Id ( Id, idType, isDataConWorkId_maybe, idArity,
- idInfo, globalIdDetails, isGlobalId, isExportedId
- )
-import Var ( TyVar, isTyVar, tyVarKind )
-import IdInfo ( IdInfo, megaSeqIdInfo,
- inlinePragInfo, occInfo, newDemandInfo,
- lbvarInfo, hasNoLBVarInfo,
- arityInfo, ppArityInfo,
- specInfo, pprNewStrictness,
- workerInfo, ppWorkerInfo,
- newStrictnessInfo, cafInfo, ppCafInfo, specInfoRules
- )
-import NewDemand ( isTop )
+import CostCentre
+import Var
+import Id
+import IdInfo
+import NewDemand
#ifdef OLD_STRICTNESS
-import Id ( idDemandInfo )
-import IdInfo ( cprInfo, ppCprInfo, strictnessInfo, ppStrictnessInfo )
+import Id
+import IdInfo
#endif
-import DataCon ( dataConTyCon )
-import TyCon ( tupleTyConBoxity, isTupleTyCon )
-import Type ( pprParendType, pprType, pprParendKind )
-import BasicTypes ( tupleParens, isNoOcc, isAlwaysActive )
-import Util ( lengthIs )
+import DataCon
+import TyCon
+import Type
+import Coercion
+import BasicTypes
+import Util
import Outputable
-import FastString ( mkFastString )
+import FastString
\end{code}
%************************************************************************
ppr_expr add_par (Var name) = ppr name
ppr_expr add_par (Lit lit) = ppr lit
+ppr_expr add_par (Cast expr co)
+ = add_par $
+ sep [pprParendExpr expr,
+ ptext SLIT("`cast`") <+> parens (pprCo co)]
+ where
+ pprCo co = sep [ppr co, dcolon <+> ppr (coercionKindPredTy co)]
+
+
ppr_expr add_par expr@(Lam _ _)
= let
(bndrs, body) = collectBinders expr
let
pp_args = sep (map pprArg args)
val_args = dropWhile isTypeArg args -- Drop the type arguments for tuples
- pp_tup_args = sep (punctuate comma (map pprArg val_args))
+ pp_tup_args = sep (punctuate comma (map pprCoreExpr val_args))
in
case fun of
Var f -> case isDataConWorkId_maybe f of
= add_par $
sep [sep [ptext SLIT("case") <+> pprCoreExpr expr,
ifPprDebug (braces (ppr ty)),
- hsep [ptext SLIT("of"),
- ppr_bndr var,
- char '{',
- ppr_case_pat con args
- ]],
+ sep [ptext SLIT("of") <+> ppr_bndr var,
+ char '{' <+> ppr_case_pat con args]
+ ],
pprCoreExpr rhs,
char '}'
]
nest 2 (pprCoreExpr rhs),
ptext SLIT("} in"),
pprCoreExpr body ]
--}
ppr_expr add_par (Let bind@(NonRec val_bdr rhs) expr@(Let _ _))
= add_par
ptext SLIT("} in")])
$$
pprCoreExpr expr)
+-}
--- general case (recursive case, too)
+-- General case (recursive case, too)
ppr_expr add_par (Let bind expr)
= add_par $
- sep [hang (ptext keyword) 2 (ppr_bind bind),
- hang (ptext SLIT("} in ")) 2 (pprCoreExpr expr)]
+ sep [hang (ptext keyword) 2 (ppr_bind bind <+> ptext SLIT("} in")),
+ pprCoreExpr expr]
where
keyword = case bind of
- Rec _ -> SLIT("__letrec {")
+ Rec _ -> SLIT("letrec {")
NonRec _ _ -> SLIT("let {")
ppr_expr add_par (Note (SCC cc) expr)
= add_par (sep [pprCostCentreCore cc, pprCoreExpr expr])
-#ifdef DEBUG
-ppr_expr add_par (Note (Coerce to_ty from_ty) expr)
- = add_par $
- getPprStyle $ \ sty ->
- if debugStyle sty then
- sep [ptext SLIT("__coerce") <+>
- sep [pprParendType to_ty, pprParendType from_ty],
- pprParendExpr expr]
- else
- sep [hsep [ptext SLIT("__coerce"), pprParendType to_ty],
- pprParendExpr expr]
-#else
-ppr_expr add_par (Note (Coerce to_ty from_ty) expr)
- = add_par $
- sep [sep [ptext SLIT("__coerce"), nest 2 (pprParendType to_ty)],
- pprParendExpr expr]
-#endif
-
-ppr_expr add_par (Note InlineCall expr)
- = add_par (ptext SLIT("__inline_call") <+> pprParendExpr expr)
-
ppr_expr add_par (Note InlineMe expr)
= add_par $ ptext SLIT("__inline_me") <+> pprParendExpr expr
tc = dataConTyCon dc
ppr_case_pat con args
- = ppr con <+> hsep (map ppr_bndr args) <+> arrow
+ = ppr con <+> sep (map ppr_bndr args) <+> arrow
where
ppr_bndr = pprBndr CaseBind
pprIdBndr id = ppr id <+> pprIdBndrInfo (idInfo id)
pprIdBndrInfo info
- = megaSeqIdInfo `seq` doc -- The seq is useful for poking on black holes
+ = megaSeqIdInfo info `seq` doc -- The seq is useful for poking on black holes
where
prag_info = inlinePragInfo info
occ_info = occInfo info
pprRule (Rule { ru_name = name, ru_act = act, ru_fn = fn,
ru_bndrs = tpl_vars, ru_args = tpl_args,
ru_rhs = rhs })
- = doubleQuotes (ftext name) <+> ppr act <+>
- sep [
- ptext SLIT("__forall") <+> braces (sep (map pprTypedBinder tpl_vars)),
- nest 2 (ppr fn <+> sep (map pprArg tpl_args)),
- nest 2 (ptext SLIT("=") <+> pprCoreExpr rhs)
- ] <+> semi
+ = hang (doubleQuotes (ftext name) <+> ppr act)
+ 4 (sep [ptext SLIT("forall") <+> braces (sep (map pprTypedBinder tpl_vars)),
+ nest 2 (ppr fn <+> sep (map pprArg tpl_args)),
+ nest 2 (ptext SLIT("=") <+> pprCoreExpr rhs)
+ ])
\end{code}
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