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%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
%
\section[GHC_Stats]{Statistics for per-module compilations}
\begin{code}
{-# OPTIONS -fno-warn-tabs #-}
-- The above warning supression flag is a temporary kludge.
-- While working on this module you are encouraged to remove it and
-- detab the module (please do the detabbing in a separate patch). See
-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#TabsvsSpaces
-- for details
module HscStats ( ppSourceStats ) where
#include "HsVersions.h"
import HsSyn
import Outputable
import SrcLoc
import Bag
import Util
import RdrName
import Data.Char
\end{code}
%************************************************************************
%* *
\subsection{Statistics}
%* *
%************************************************************************
\begin{code}
ppSourceStats :: Bool -> Located (HsModule RdrName) -> SDoc
ppSourceStats short (L _ (HsModule _ exports imports ldecls _ _))
= (if short then hcat else vcat)
(map pp_val
[("ExportAll ", export_all), -- 1 if no export list
("ExportDecls ", export_ds),
("ExportModules ", export_ms),
("Imports ", imp_no),
(" ImpSafe ", imp_safe),
(" ImpQual ", imp_qual),
(" ImpAs ", imp_as),
(" ImpAll ", imp_all),
(" ImpPartial ", imp_partial),
(" ImpHiding ", imp_hiding),
("FixityDecls ", fixity_sigs),
("DefaultDecls ", default_ds),
("TypeDecls ", type_ds),
("DataDecls ", data_ds),
("NewTypeDecls ", newt_ds),
("TypeFamilyDecls ", type_fam_ds),
("DataConstrs ", data_constrs),
("DataDerivings ", data_derivs),
("ClassDecls ", class_ds),
("ClassMethods ", class_method_ds),
("DefaultMethods ", default_method_ds),
("InstDecls ", inst_ds),
("InstMethods ", inst_method_ds),
("InstType ", inst_type_ds),
("InstData ", inst_data_ds),
("TypeSigs ", bind_tys),
("GenericSigs ", generic_sigs),
("ValBinds ", val_bind_ds),
("FunBinds ", fn_bind_ds),
("InlineMeths ", method_inlines),
("InlineBinds ", bind_inlines),
-- ("SpecialisedData ", data_specs),
-- ("SpecialisedInsts ", inst_specs),
("SpecialisedMeths ", method_specs),
("SpecialisedBinds ", bind_specs)
])
where
decls = map unLoc ldecls
pp_val (_, 0) = empty
pp_val (str, n)
| not short = hcat [text str, int n]
| otherwise = hcat [text (trim str), equals, int n, semi]
trim ls = takeWhile (not.isSpace) (dropWhile isSpace ls)
(fixity_sigs, bind_tys, bind_specs, bind_inlines, generic_sigs)
= count_sigs [d | SigD d <- decls]
-- NB: this omits fixity decls on local bindings and
-- in class decls. ToDo
tycl_decls = [d | TyClD d <- decls]
(class_ds, type_ds, data_ds, newt_ds, type_fam_ds) =
countTyClDecls tycl_decls
inst_decls = [d | InstD d <- decls]
inst_ds = length inst_decls
default_ds = count (\ x -> case x of { DefD{} -> True; _ -> False}) decls
val_decls = [d | ValD d <- decls]
real_exports = case exports of { Nothing -> []; Just es -> es }
n_exports = length real_exports
export_ms = count (\ e -> case unLoc e of { IEModuleContents{} -> True;_ -> False})
real_exports
export_ds = n_exports - export_ms
export_all = case exports of { Nothing -> 1; _ -> 0 }
(val_bind_ds, fn_bind_ds)
= foldr add2 (0,0) (map count_bind val_decls)
(imp_no, imp_safe, imp_qual, imp_as, imp_all, imp_partial, imp_hiding)
= foldr add7 (0,0,0,0,0,0,0) (map import_info imports)
(data_constrs, data_derivs)
= foldr add2 (0,0) (map data_info tycl_decls)
(class_method_ds, default_method_ds)
= foldr add2 (0,0) (map class_info tycl_decls)
(inst_method_ds, method_specs, method_inlines, inst_type_ds, inst_data_ds)
= foldr add5 (0,0,0,0,0) (map inst_info inst_decls)
count_bind (PatBind { pat_lhs = L _ (VarPat _) }) = (1,0)
count_bind (PatBind {}) = (0,1)
count_bind (FunBind {}) = (0,1)
count_bind b = pprPanic "count_bind: Unhandled binder" (ppr b)
count_sigs sigs = foldr add5 (0,0,0,0,0) (map sig_info sigs)
sig_info (FixSig _) = (1,0,0,0,0)
sig_info (TypeSig _ _) = (0,1,0,0,0)
sig_info (SpecSig _ _ _) = (0,0,1,0,0)
sig_info (InlineSig _ _) = (0,0,0,1,0)
sig_info (GenericSig _ _) = (0,0,0,0,1)
sig_info _ = (0,0,0,0,0)
import_info (L _ (ImportDecl { ideclSafe = safe, ideclQualified = qual
, ideclAs = as, ideclHiding = spec }))
= add7 (1, safe_info safe, qual_info qual, as_info as, 0,0,0) (spec_info spec)
safe_info = qual_info
qual_info False = 0
qual_info True = 1
as_info Nothing = 0
as_info (Just _) = 1
spec_info Nothing = (0,0,0,0,1,0,0)
spec_info (Just (False, _)) = (0,0,0,0,0,1,0)
spec_info (Just (True, _)) = (0,0,0,0,0,0,1)
data_info (TyDecl { tcdTyDefn = TyData {td_cons = cs, td_derivs = derivs}})
= (length cs, case derivs of Nothing -> 0
Just ds -> length ds)
data_info _ = (0,0)
class_info decl@(ClassDecl {})
= case count_sigs (map unLoc (tcdSigs decl)) of
(_,classops,_,_,_) ->
(classops, addpr (foldr add2 (0,0) (map (count_bind.unLoc) (bagToList (tcdMeths decl)))))
class_info _ = (0,0)
inst_info (FamInstD d) = case countATDecl d of
(tyd, dtd) -> (0,0,0,tyd,dtd)
inst_info (ClsInstD _ inst_meths inst_sigs ats)
= case count_sigs (map unLoc inst_sigs) of
(_,_,ss,is,_) ->
case foldr add2 (0, 0) (map (countATDecl . unLoc) ats) of
(tyDecl, dtDecl) ->
(addpr (foldr add2 (0,0)
(map (count_bind.unLoc) (bagToList inst_meths))),
ss, is, tyDecl, dtDecl)
where
countATDecl (FamInstDecl { fid_defn = TyData {} }) = (0, 1)
countATDecl (FamInstDecl { fid_defn = TySynonym {} }) = (1, 0)
addpr :: (Int,Int) -> Int
add2 :: (Int,Int) -> (Int,Int) -> (Int, Int)
add5 :: (Int,Int,Int,Int,Int) -> (Int,Int,Int,Int,Int) -> (Int, Int, Int, Int, Int)
add7 :: (Int,Int,Int,Int,Int,Int,Int) -> (Int,Int,Int,Int,Int,Int,Int) -> (Int, Int, Int, Int, Int, Int, Int)
addpr (x,y) = x+y
add2 (x1,x2) (y1,y2) = (x1+y1,x2+y2)
add5 (x1,x2,x3,x4,x5) (y1,y2,y3,y4,y5) = (x1+y1,x2+y2,x3+y3,x4+y4,x5+y5)
add7 (x1,x2,x3,x4,x5,x6,x7) (y1,y2,y3,y4,y5,y6,y7) = (x1+y1,x2+y2,x3+y3,x4+y4,x5+y5,x6+y6,x7+y7)
\end{code}
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