2 % (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
4 \section[GHC_Stats]{Statistics for per-module compilations}
7 module HscStats ( ppSourceStats ) where
9 #include "HsVersions.h"
21 %************************************************************************
23 \subsection{Statistics}
25 %************************************************************************
28 ppSourceStats :: Bool -> Located (HsModule RdrName) -> SDoc
29 ppSourceStats short (L _ (HsModule _ exports imports ldecls _ _))
30 = (if short then hcat else vcat)
32 [("ExportAll ", export_all), -- 1 if no export list
33 ("ExportDecls ", export_ds),
34 ("ExportModules ", export_ms),
35 ("Imports ", import_no),
36 (" ImpQual ", import_qual),
37 (" ImpAs ", import_as),
38 (" ImpAll ", import_all),
39 (" ImpPartial ", import_partial),
40 (" ImpHiding ", import_hiding),
41 ("FixityDecls ", fixity_sigs),
42 ("DefaultDecls ", default_ds),
43 ("TypeDecls ", type_ds),
44 ("DataDecls ", data_ds),
45 ("NewTypeDecls ", newt_ds),
46 ("TypeFamilyDecls ", type_fam_ds),
47 ("FamilyInstDecls ", fam_inst_ds),
48 ("DataConstrs ", data_constrs),
49 ("DataDerivings ", data_derivs),
50 ("ClassDecls ", class_ds),
51 ("ClassMethods ", class_method_ds),
52 ("DefaultMethods ", default_method_ds),
53 ("InstDecls ", inst_ds),
54 ("InstMethods ", inst_method_ds),
55 ("InstType ", inst_type_ds),
56 ("InstData ", inst_data_ds),
57 ("TypeSigs ", bind_tys),
58 ("GenericSigs ", generic_sigs),
59 ("ValBinds ", val_bind_ds),
60 ("FunBinds ", fn_bind_ds),
61 ("InlineMeths ", method_inlines),
62 ("InlineBinds ", bind_inlines),
63 -- ("SpecialisedData ", data_specs),
64 -- ("SpecialisedInsts ", inst_specs),
65 ("SpecialisedMeths ", method_specs),
66 ("SpecialisedBinds ", bind_specs)
69 decls = map unLoc ldecls
73 | not short = hcat [text str, int n]
74 | otherwise = hcat [text (trim str), equals, int n, semi]
76 trim ls = takeWhile (not.isSpace) (dropWhile isSpace ls)
78 (fixity_sigs, bind_tys, bind_specs, bind_inlines, generic_sigs)
79 = count_sigs [d | SigD d <- decls]
80 -- NB: this omits fixity decls on local bindings and
81 -- in class decls. ToDo
83 tycl_decls = [d | TyClD d <- decls]
84 (class_ds, type_ds, data_ds, newt_ds, type_fam_ds, fam_inst_ds) =
85 countTyClDecls tycl_decls
87 inst_decls = [d | InstD d <- decls]
88 inst_ds = length inst_decls
89 default_ds = count (\ x -> case x of { DefD{} -> True; _ -> False}) decls
90 val_decls = [d | ValD d <- decls]
92 real_exports = case exports of { Nothing -> []; Just es -> es }
93 n_exports = length real_exports
94 export_ms = count (\ e -> case unLoc e of { IEModuleContents{} -> True;_ -> False})
96 export_ds = n_exports - export_ms
97 export_all = case exports of { Nothing -> 1; _ -> 0 }
99 (val_bind_ds, fn_bind_ds)
100 = foldr add2 (0,0) (map count_bind val_decls)
102 (import_no, import_qual, import_as, import_all, import_partial, import_hiding)
103 = foldr add6 (0,0,0,0,0,0) (map import_info imports)
104 (data_constrs, data_derivs)
105 = foldr add2 (0,0) (map data_info tycl_decls)
106 (class_method_ds, default_method_ds)
107 = foldr add2 (0,0) (map class_info tycl_decls)
108 (inst_method_ds, method_specs, method_inlines, inst_type_ds, inst_data_ds)
109 = foldr add5 (0,0,0,0,0) (map inst_info inst_decls)
111 count_bind (PatBind { pat_lhs = L _ (VarPat _) }) = (1,0)
112 count_bind (PatBind {}) = (0,1)
113 count_bind (FunBind {}) = (0,1)
114 count_bind b = pprPanic "count_bind: Unhandled binder" (ppr b)
116 count_sigs sigs = foldr add5 (0,0,0,0,0) (map sig_info sigs)
118 sig_info (FixSig _) = (1,0,0,0,0)
119 sig_info (TypeSig _ _) = (0,1,0,0,0)
120 sig_info (SpecSig _ _ _) = (0,0,1,0,0)
121 sig_info (InlineSig _ _) = (0,0,0,1,0)
122 sig_info (GenericSig _ _) = (0,0,0,0,1)
123 sig_info _ = (0,0,0,0,0)
125 import_info (L _ (ImportDecl _ _ _ qual as spec))
126 = add6 (1, qual_info qual, as_info as, 0,0,0) (spec_info spec)
131 spec_info Nothing = (0,0,0,1,0,0)
132 spec_info (Just (False, _)) = (0,0,0,0,1,0)
133 spec_info (Just (True, _)) = (0,0,0,0,0,1)
135 data_info (TyData {tcdCons = cs, tcdDerivs = derivs})
136 = (length cs, case derivs of Nothing -> 0
137 Just ds -> length ds)
140 class_info decl@(ClassDecl {})
141 = case count_sigs (map unLoc (tcdSigs decl)) of
142 (_,classops,_,_,_) ->
143 (classops, addpr (foldr add2 (0,0) (map (count_bind.unLoc) (bagToList (tcdMeths decl)))))
146 inst_info (InstDecl _ inst_meths inst_sigs ats)
147 = case count_sigs (map unLoc inst_sigs) of
149 case foldr add2 (0, 0) (map (countATDecl . unLoc) ats) of
151 (addpr (foldr add2 (0,0)
152 (map (count_bind.unLoc) (bagToList inst_meths))),
153 ss, is, tyDecl, dtDecl)
155 countATDecl (TyData {}) = (0, 1)
156 countATDecl (TySynonym {}) = (1, 0)
157 countATDecl d = pprPanic "countATDecl: Unhandled decl"
160 addpr :: (Int,Int) -> Int
161 add2 :: (Int,Int) -> (Int,Int) -> (Int, Int)
162 add5 :: (Int,Int,Int,Int,Int) -> (Int,Int,Int,Int,Int) -> (Int, Int, Int, Int, Int)
163 add6 :: (Int,Int,Int,Int,Int,Int) -> (Int,Int,Int,Int,Int,Int) -> (Int, Int, Int, Int, Int, Int)
166 add2 (x1,x2) (y1,y2) = (x1+y1,x2+y2)
167 add5 (x1,x2,x3,x4,x5) (y1,y2,y3,y4,y5) = (x1+y1,x2+y2,x3+y3,x4+y4,x5+y5)
168 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)