pprRules
) where
-#include "HsVersions.h"
-
import CoreSyn
import CostCentre
import Var
import TyCon
import Type
import Coercion
+import StaticFlags
import BasicTypes
import Util
import Outputable
%************************************************************************
\begin{code}
+pprTopBinds :: OutputableBndr a => [Bind a] -> SDoc
pprTopBinds binds = vcat (map pprTopBind binds)
+pprTopBind :: OutputableBndr a => Bind a -> SDoc
pprTopBind (NonRec binder expr)
- = ppr_binding (binder,expr) $$ text ""
-
-pprTopBind (Rec binds)
- = vcat [ptext SLIT("Rec {"),
- vcat (map ppr_binding binds),
- ptext SLIT("end Rec }"),
- text ""]
+ = ppr_binding (binder,expr) $$ blankLine
+
+pprTopBind (Rec [])
+ = ptext (sLit "Rec { }")
+pprTopBind (Rec (b:bs))
+ = vcat [ptext (sLit "Rec {"),
+ ppr_binding b,
+ vcat [blankLine $$ ppr_binding b | b <- bs],
+ ptext (sLit "end Rec }"),
+ blankLine]
\end{code}
\begin{code}
-- The function adds parens in context that need
-- an atomic value (e.g. function args)
-ppr_expr add_par (Type ty) = add_par (ptext SLIT("TYPE") <+> ppr ty) -- Wierd
+ppr_expr add_par (Type ty) = add_par (ptext (sLit "TYPE") <+> ppr ty) -- Wierd
-ppr_expr add_par (Var name) = ppr name
-ppr_expr add_par (Lit lit) = ppr lit
+ppr_expr _ (Var name) = ppr name
+ppr_expr _ (Lit lit) = ppr lit
ppr_expr add_par (Cast expr co)
= add_par $
sep [pprParendExpr expr,
- ptext SLIT("`cast`") <+> parens (pprCo co)]
+ ptext (sLit "`cast`") <+> pprCo co]
where
- pprCo co = sep [ppr co, dcolon <+> ppr (coercionKindPredTy co)]
+ pprCo co | opt_SuppressCoercions = ptext (sLit "...")
+ | otherwise = parens
+ $ sep [ppr co, dcolon <+> ppr (coercionKindPredTy co)]
ppr_expr add_par expr@(Lam _ _)
(bndrs, body) = collectBinders expr
in
add_par $
- hang (ptext SLIT("\\") <+> sep (map (pprBndr LambdaBind) bndrs) <+> arrow)
+ hang (ptext (sLit "\\") <+> sep (map (pprBndr LambdaBind) bndrs) <+> arrow)
2 (pprCoreExpr body)
-ppr_expr add_par expr@(App fun arg)
+ppr_expr add_par expr@(App {})
= case collectArgs expr of { (fun, args) ->
let
pp_args = sep (map pprArg args)
tc = dataConTyCon dc
saturated = val_args `lengthIs` idArity f
- other -> add_par (hang (ppr f) 2 pp_args)
+ _ -> add_par (hang (ppr f) 2 pp_args)
- other -> add_par (hang (pprParendExpr fun) 2 pp_args)
+ _ -> add_par (hang (pprParendExpr fun) 2 pp_args)
}
ppr_expr add_par (Case expr var ty [(con,args,rhs)])
= add_par $
- sep [sep [ptext SLIT("case") <+> pprCoreExpr expr,
+ sep [sep [ptext (sLit "case") <+> pprCoreExpr expr,
ifPprDebug (braces (ppr ty)),
- sep [ptext SLIT("of") <+> ppr_bndr var,
+ sep [ptext (sLit "of") <+> ppr_bndr var,
char '{' <+> ppr_case_pat con args]
],
pprCoreExpr rhs,
ppr_expr add_par (Case expr var ty alts)
= add_par $
- sep [sep [ptext SLIT("case")
+ sep [sep [ptext (sLit "case")
<+> pprCoreExpr expr
<+> ifPprDebug (braces (ppr ty)),
- ptext SLIT("of") <+> ppr_bndr var <+> char '{'],
+ ptext (sLit "of") <+> ppr_bndr var <+> char '{'],
nest 2 (sep (punctuate semi (map pprCoreAlt alts))),
char '}'
]
ppr_expr add_par (Let bind@(NonRec val_bdr rhs@(Let _ _)) body)
= add_par $
vcat [
- hsep [ptext SLIT("let {"), (pprBndr LetBind val_bdr $$ ppr val_bndr), equals],
+ hsep [ptext (sLit "let {"), (pprBndr LetBind val_bdr $$ ppr val_bndr), equals],
nest 2 (pprCoreExpr rhs),
- ptext SLIT("} in"),
+ ptext (sLit "} in"),
pprCoreExpr body ]
--}
ppr_expr add_par (Let bind@(NonRec val_bdr rhs) expr@(Let _ _))
= add_par
- (hang (ptext SLIT("let {"))
+ (hang (ptext (sLit "let {"))
2 (hsep [ppr_binding (val_bdr,rhs),
- ptext SLIT("} in")])
+ ptext (sLit "} in")])
$$
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 {")
- NonRec _ _ -> SLIT("let {")
+ Rec _ -> (sLit "letrec {")
+ NonRec _ _ -> (sLit "let {")
ppr_expr add_par (Note (SCC cc) expr)
= add_par (sep [pprCostCentreCore cc, pprCoreExpr expr])
ppr_expr add_par (Note InlineMe expr)
- = add_par $ ptext SLIT("__inline_me") <+> pprParendExpr expr
+ = add_par $ ptext (sLit "__inline_me") <+> pprParendExpr expr
ppr_expr add_par (Note (CoreNote s) expr)
= add_par $
- sep [sep [ptext SLIT("__core_note"), pprHsString (mkFastString s)],
+ sep [sep [ptext (sLit "__core_note"), pprHsString (mkFastString s)],
pprParendExpr expr]
+pprCoreAlt :: OutputableBndr a => (AltCon, [a] , Expr a) -> SDoc
pprCoreAlt (con, args, rhs)
= hang (ppr_case_pat con args) 2 (pprCoreExpr rhs)
-ppr_case_pat con@(DataAlt dc) args
+ppr_case_pat :: OutputableBndr a => AltCon -> [a] -> SDoc
+ppr_case_pat (DataAlt dc) args
| isTupleTyCon tc
= tupleParens (tupleTyConBoxity tc) (hsep (punctuate comma (map ppr_bndr args))) <+> arrow
where
where
ppr_bndr = pprBndr CaseBind
-pprArg (Type ty) = ptext SLIT("@") <+> pprParendType ty
+pprArg :: OutputableBndr a => Expr a -> SDoc
+pprArg (Type ty) = ptext (sLit "@") <+> pprParendType ty
pprArg expr = pprParendExpr expr
\end{code}
pprCoreBinder :: BindingSite -> Var -> SDoc
pprCoreBinder LetBind binder
- = vcat [sig, pprIdDetails binder, pragmas]
+ | isTyVar binder = pprKindedTyVarBndr binder
+ | otherwise
+ = vcat [sig, pprIdExtras binder, pragmas]
where
sig = pprTypedBinder binder
pragmas = ppIdInfo binder (idInfo binder)
-- Lambda bound type variables are preceded by "@"
-pprCoreBinder LambdaBind bndr = parens (pprTypedBinder bndr)
+pprCoreBinder LambdaBind bndr
+ | isDeadBinder bndr
+ = getPprStyle $ \ sty ->
+ if debugStyle sty then
+ parens (pprTypedBinder bndr)
+ else
+ char '_'
+ | otherwise
+ = parens (pprTypedBinder bndr)
-- Case bound things don't get a signature or a herald, unless we have debug on
pprCoreBinder CaseBind bndr
if debugStyle sty then
parens (pprTypedBinder bndr)
else
- pprUntypedBinder bndr
+ if isDeadBinder bndr then char '_'
+ else pprUntypedBinder bndr
+pprUntypedBinder :: Var -> SDoc
pprUntypedBinder binder
- | isTyVar binder = ptext SLIT("@") <+> ppr binder -- NB: don't print kind
+ | isTyVar binder = ptext (sLit "@") <+> ppr binder -- NB: don't print kind
| otherwise = pprIdBndr binder
+pprTypedBinder :: Var -> SDoc
+-- Print binder with a type or kind signature (not paren'd)
pprTypedBinder binder
- | isTyVar binder = ptext SLIT("@") <+> pprTyVarBndr binder
+ | isTyVar binder = pprKindedTyVarBndr binder
| otherwise = pprIdBndr binder <+> dcolon <+> pprType (idType binder)
-pprTyVarBndr :: TyVar -> SDoc
-pprTyVarBndr tyvar
- = getPprStyle $ \ sty ->
- if debugStyle sty then
- hsep [ppr tyvar, dcolon, pprParendKind kind]
- -- See comments with ppDcolon in PprCore.lhs
- else
- ppr tyvar
+pprKindedTyVarBndr :: TyVar -> SDoc
+-- Print a type variable binder with its kind (but not if *)
+pprKindedTyVarBndr tyvar
+ = ptext (sLit "@") <+> ppr tyvar <> opt_kind
where
+ opt_kind -- Print the kind if not *
+ | isLiftedTypeKind kind = empty
+ | otherwise = dcolon <> pprKind kind
kind = tyVarKind tyvar
-- pprIdBndr does *not* print the type
-- When printing any Id binder in debug mode, we print its inline pragma and one-shot-ness
+pprIdBndr :: Id -> SDoc
pprIdBndr id = ppr id <+> pprIdBndrInfo (idInfo id)
+pprIdBndrInfo :: IdInfo -> SDoc
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
dmd_info = newDemandInfo info
lbv_info = lbvarInfo info
- no_info = isAlwaysActive prag_info && isNoOcc occ_info &&
+ no_info = isDefaultInlinePragma prag_info && isNoOcc occ_info &&
(case dmd_info of { Nothing -> True; Just d -> isTop d }) &&
hasNoLBVarInfo lbv_info
\begin{code}
-pprIdDetails :: Id -> SDoc
-pprIdDetails id | isGlobalId id = ppr (globalIdDetails id)
- | isExportedId id = ptext SLIT("[Exported]")
- | otherwise = empty
+pprIdExtras :: Id -> SDoc
+pprIdExtras id = pp_scope <> ppr (idDetails id)
+ where
+ pp_scope | isGlobalId id = ptext (sLit "GblId")
+ | isExportedId id = ptext (sLit "LclIdX")
+ | otherwise = ptext (sLit "LclId")
ppIdInfo :: Id -> IdInfo -> SDoc
-ppIdInfo b info
+ppIdInfo _ info
= brackets $
vcat [ ppArityInfo a,
ppWorkerInfo (workerInfo info),
#endif
pprNewStrictness (newStrictnessInfo info),
if null rules then empty
- else ptext SLIT("RULES:") <+> vcat (map pprRule rules)
+ else ptext (sLit "RULES:") <+> vcat (map pprRule rules)
-- Inline pragma, occ, demand, lbvar info
-- printed out with all binders (when debug is on);
-- see PprCore.pprIdBndr
pprRule :: CoreRule -> SDoc
pprRule (BuiltinRule { ru_fn = fn, ru_name = name})
- = ptext SLIT("Built in rule for") <+> ppr fn <> colon <+> doubleQuotes (ftext name)
+ = ptext (sLit "Built in rule for") <+> ppr fn <> colon <+> doubleQuotes (ftext name)
pprRule (Rule { ru_name = name, ru_act = act, ru_fn = fn,
ru_bndrs = tpl_vars, ru_args = tpl_args,
ru_rhs = rhs })
= hang (doubleQuotes (ftext name) <+> ppr act)
- 4 (sep [ptext SLIT("forall") <+> braces (sep (map pprTypedBinder tpl_vars)),
+ 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)
+ nest 2 (ptext (sLit "=") <+> pprCoreExpr rhs)
])
\end{code}
projects / ghc-hetmet.git / blobdiff