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%
% (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
%
\section[GHC_Stats]{Statistics for per-module compilations}
\begin{code}
module HscStats ( ppSourceStats ) where
#include "HsVersions.h"
import HsSyn
import Outputable
import SrcLoc ( unLoc, Located(..) )
import Char ( isSpace )
import Bag ( bagToList )
import Util ( count )
\end{code}
%************************************************************************
%* *
\subsection{Statistics}
%* *
%************************************************************************
\begin{code}
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 ", import_no),
(" ImpQual ", import_qual),
(" ImpAs ", import_as),
(" ImpAll ", import_all),
(" ImpPartial ", import_partial),
(" ImpHiding ", import_hiding),
("FixityDecls ", fixity_sigs),
("DefaultDecls ", default_ds),
("TypeDecls ", type_ds),
("DataDecls ", data_ds),
("NewTypeDecls ", newt_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),
("TypeSigs ", bind_tys),
("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 (str, 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)
= 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) = 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; other -> 0 }
(val_bind_ds, fn_bind_ds)
= foldr add2 (0,0) (map count_bind val_decls)
(import_no, import_qual, import_as, import_all, import_partial, import_hiding)
= foldr add6 (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)
= foldr add3 (0,0,0) (map inst_info inst_decls)
count_bind (PatBind { pat_lhs = L _ (VarPat n) }) = (1,0)
count_bind (PatBind {}) = (0,1)
count_bind (FunBind {}) = (0,1)
count_sigs sigs = foldr add4 (0,0,0,0) (map sig_info sigs)
sig_info (FixSig _) = (1,0,0,0)
sig_info (TypeSig _ _) = (0,1,0,0)
sig_info (SpecSig _ _ _) = (0,0,1,0)
sig_info (InlineSig _ _) = (0,0,0,1)
sig_info _ = (0,0,0,0)
import_info (L _ (ImportDecl _ _ qual as spec))
= add6 (1, qual_info qual, as_info as, 0,0,0) (spec_info spec)
qual_info False = 0
qual_info True = 1
as_info Nothing = 0
as_info (Just _) = 1
spec_info Nothing = (0,0,0,1,0,0)
spec_info (Just (False, _)) = (0,0,0,0,1,0)
spec_info (Just (True, _)) = (0,0,0,0,0,1)
data_info (TyData {tcdCons = cs, tcdDerivs = derivs})
= (length cs, case derivs of Nothing -> 0
Just ds -> length ds)
data_info other = (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 other = (0,0)
inst_info (InstDecl _ inst_meths inst_sigs)
= case count_sigs (map unLoc inst_sigs) of
(_,_,ss,is) ->
(addpr (foldr add2 (0,0) (map (count_bind.unLoc) (bagToList inst_meths))), ss, is)
addpr :: (Int,Int) -> Int
add2 :: (Int,Int) -> (Int,Int) -> (Int, Int)
add3 :: (Int,Int,Int) -> (Int,Int,Int) -> (Int, Int, Int)
add4 :: (Int,Int,Int,Int) -> (Int,Int,Int,Int) -> (Int, Int, Int, Int)
add6 :: (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)
add3 (x1,x2,x3) (y1,y2,y3) = (x1+y1,x2+y2,x3+y3)
add4 (x1,x2,x3,x4) (y1,y2,y3,y4) = (x1+y1,x2+y2,x3+y3,x4+y4)
add6 (x1,x2,x3,x4,x5,x6) (y1,y2,y3,y4,y5,y6) = (x1+y1,x2+y2,x3+y3,x4+y4,x5+y5,x6+y6)
\end{code}
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