1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
-- | A ModSummary is a node in the compilation manager's dependency graph
-- (ModuleGraph)
module GHC.Unit.Module.ModSummary
( ModSummary (..)
, ms_installed_mod
, ms_mod_name
, ms_imps
, ms_home_allimps
, ms_home_srcimps
, ms_home_imps
, msHiFilePath
, msHsFilePath
, msObjFilePath
, msDynObjFilePath
, isBootSummary
, showModMsg
, findTarget
)
where
import GHC.Prelude
import GHC.Hs
import GHC.Driver.Ppr
import GHC.Driver.Session
import GHC.Driver.Backend
import GHC.Unit.Types
import GHC.Unit.Module
import GHC.Types.SourceFile ( HscSource(..), hscSourceString )
import GHC.Types.SrcLoc
import GHC.Types.Target
import GHC.Data.Maybe
import GHC.Data.FastString
import GHC.Data.StringBuffer ( StringBuffer )
import GHC.Utils.Outputable
import Data.Time
import System.FilePath
-- | A single node in a 'ModuleGraph'. The nodes of the module graph
-- are one of:
--
-- * A regular Haskell source module
-- * A hi-boot source module
--
data ModSummary
= ModSummary {
ms_mod :: Module,
-- ^ Identity of the module
ms_hsc_src :: HscSource,
-- ^ The module source either plain Haskell or hs-boot
ms_location :: ModLocation,
-- ^ Location of the various files belonging to the module
ms_hs_date :: UTCTime,
-- ^ Timestamp of source file
ms_obj_date :: Maybe UTCTime,
-- ^ Timestamp of object, if we have one
ms_iface_date :: Maybe UTCTime,
-- ^ Timestamp of hi file, if we *only* are typechecking (it is
-- 'Nothing' otherwise.
-- See Note [Recompilation checking in -fno-code mode] and #9243
ms_hie_date :: Maybe UTCTime,
-- ^ Timestamp of hie file, if we have one
ms_srcimps :: [(Maybe FastString, Located ModuleName)],
-- ^ Source imports of the module
ms_textual_imps :: [(Maybe FastString, Located ModuleName)],
-- ^ Non-source imports of the module from the module *text*
ms_parsed_mod :: Maybe HsParsedModule,
-- ^ The parsed, nonrenamed source, if we have it. This is also
-- used to support "inline module syntax" in Backpack files.
ms_hspp_file :: FilePath,
-- ^ Filename of preprocessed source file
ms_hspp_opts :: DynFlags,
-- ^ Cached flags from @OPTIONS@, @INCLUDE@ and @LANGUAGE@
-- pragmas in the modules source code
ms_hspp_buf :: Maybe StringBuffer
-- ^ The actual preprocessed source, if we have it
}
ms_installed_mod :: ModSummary -> InstalledModule
ms_installed_mod = fst . getModuleInstantiation . ms_mod
ms_mod_name :: ModSummary -> ModuleName
ms_mod_name = moduleName . ms_mod
ms_imps :: ModSummary -> [(Maybe FastString, Located ModuleName)]
ms_imps ms =
ms_textual_imps ms ++
map mk_additional_import (dynFlagDependencies (ms_hspp_opts ms))
where
mk_additional_import mod_nm = (Nothing, noLoc mod_nm)
home_imps :: [(Maybe FastString, Located ModuleName)] -> [Located ModuleName]
home_imps imps = [ lmodname | (mb_pkg, lmodname) <- imps,
isLocal mb_pkg ]
where isLocal Nothing = True
isLocal (Just pkg) | pkg == fsLit "this" = True -- "this" is special
isLocal _ = False
ms_home_allimps :: ModSummary -> [ModuleName]
ms_home_allimps ms = map unLoc (ms_home_srcimps ms ++ ms_home_imps ms)
-- | Like 'ms_home_imps', but for SOURCE imports.
ms_home_srcimps :: ModSummary -> [Located ModuleName]
ms_home_srcimps = home_imps . ms_srcimps
-- | All of the (possibly) home module imports from a
-- 'ModSummary'; that is to say, each of these module names
-- could be a home import if an appropriately named file
-- existed. (This is in contrast to package qualified
-- imports, which are guaranteed not to be home imports.)
ms_home_imps :: ModSummary -> [Located ModuleName]
ms_home_imps = home_imps . ms_imps
-- The ModLocation contains both the original source filename and the
-- filename of the cleaned-up source file after all preprocessing has been
-- done. The point is that the summariser will have to cpp/unlit/whatever
-- all files anyway, and there's no point in doing this twice -- just
-- park the result in a temp file, put the name of it in the location,
-- and let @compile@ read from that file on the way back up.
-- The ModLocation is stable over successive up-sweeps in GHCi, wheres
-- the ms_hs_date and imports can, of course, change
msHsFilePath, msHiFilePath, msObjFilePath :: ModSummary -> FilePath
msHsFilePath ms = expectJust "msHsFilePath" (ml_hs_file (ms_location ms))
msHiFilePath ms = ml_hi_file (ms_location ms)
msObjFilePath ms = ml_obj_file (ms_location ms)
msDynObjFilePath :: ModSummary -> DynFlags -> FilePath
msDynObjFilePath ms dflags = dynamicOutputFile dflags (msObjFilePath ms)
-- | Did this 'ModSummary' originate from a hs-boot file?
isBootSummary :: ModSummary -> IsBootInterface
isBootSummary ms = if ms_hsc_src ms == HsBootFile then IsBoot else NotBoot
instance Outputable ModSummary where
ppr ms
= sep [text "ModSummary {",
nest 3 (sep [text "ms_hs_date = " <> text (show (ms_hs_date ms)),
text "ms_mod =" <+> ppr (ms_mod ms)
<> text (hscSourceString (ms_hsc_src ms)) <> comma,
text "ms_textual_imps =" <+> ppr (ms_textual_imps ms),
text "ms_srcimps =" <+> ppr (ms_srcimps ms)]),
char '}'
]
showModMsg :: DynFlags -> Bool -> ModSummary -> SDoc
showModMsg dflags recomp mod_summary =
if gopt Opt_HideSourcePaths dflags
then text mod_str
else hsep $
[ text (mod_str ++ replicate (max 0 (16 - length mod_str)) ' ')
, char '('
, text (op $ msHsFilePath mod_summary) <> char ','
] ++
if gopt Opt_BuildDynamicToo dflags
then [ text obj_file <> char ','
, text dyn_file
, char ')'
]
else [ text obj_file, char ')' ]
where
op = normalise
mod = moduleName (ms_mod mod_summary)
mod_str = showPpr dflags mod ++ hscSourceString (ms_hsc_src mod_summary)
dyn_file = op $ msDynObjFilePath mod_summary dflags
obj_file = case backend dflags of
Interpreter | recomp -> "interpreted"
NoBackend -> "nothing"
_ -> (op $ msObjFilePath mod_summary)
findTarget :: ModSummary -> [Target] -> Maybe Target
findTarget ms ts =
case filter (matches ms) ts of
[] -> Nothing
(t:_) -> Just t
where
summary `matches` Target (TargetModule m) _ _
= ms_mod_name summary == m
summary `matches` Target (TargetFile f _) _ _
| Just f' <- ml_hs_file (ms_location summary)
= f == f'
_ `matches` _
= False
|
