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
|
----------------------------------------------------------------------
-- |
-- Module : GetGrammar
-- Maintainer : AR
-- Stability : (stable)
-- Portability : (portable)
--
-- > CVS $Date: 2005/11/15 17:56:13 $
-- > CVS $Author: aarne $
-- > CVS $Revision: 1.16 $
--
-- this module builds the internal GF grammar that is sent to the type checker
-----------------------------------------------------------------------------
module GF.Compile.GetGrammar (getSourceModule) where
import Prelude hiding (catch)
import GF.Data.Operations
import GF.System.Catch
import GF.Infra.UseIO
import GF.Infra.Option(Options,optPreprocessors,addOptions,optEncoding,flag,renameEncoding)
import GF.Grammar.Lexer
import GF.Grammar.Parser
import GF.Grammar.Grammar
import GF.Compile.Coding
import qualified Data.ByteString.Char8 as BS
import Control.Monad (foldM)
import System.Cmd (system)
import System.IO(mkTextEncoding)
import System.Directory(removeFile)
getSourceModule :: Options -> FilePath -> IOE SourceModule
getSourceModule opts file0 = ioe $
do tmp <- foldM runPreprocessor (Source file0) (flag optPreprocessors opts)
content <- keepTemp tmp
case runP pModDef content of
Left (Pn l c,msg) -> do file <- writeTemp tmp
let location = file++":"++show l++":"++show c
return (Bad (location++":\n "++msg))
Right (i,mi00) ->
do removeTemp tmp
let mi0 =mi00 {mflags=mflags mi00 `addOptions` opts, msrc=file0}
mi <- transcodeModule (i,mi0)
return (Ok mi)
`catch` (return . Bad . show)
transcodeModule sm00 =
do enc <- mkTextEncoding (renameEncoding (flag optEncoding (mflags (snd sm00))))
let sm = decodeStringsInModule enc sm00
return sm
runPreprocessor :: Temporary -> String -> IO Temporary
runPreprocessor tmp0 p =
maybe external internal (lookup p builtin_preprocessors)
where
internal preproc = (Internal . preproc) `fmap` readTemp tmp0
external =
do file0 <- writeTemp tmp0
-- FIXME: should use System.IO.openTempFile
let file1a = "_gf_preproc.tmp"
file1b = "_gf_preproc2.tmp"
-- file0 and file1 must be different
file1 = if file0==file1a then file1b else file1a
cmd = p +++ file0 ++ ">" ++ file1
system cmd
return (Temp file1)
--------------------------------------------------------------------------------
builtin_preprocessors = [("mkPresent",mkPresent),("mkMinimal",mkMinimal)]
mkPresent = omit_lines "--# notpresent" -- grep -v "\-\-\# notpresent"
mkMinimal = omit_lines "--# notminimal" -- grep -v "\-\-\# notminimal"
omit_lines s = BS.unlines . filter (not . BS.isInfixOf bs) . BS.lines
where bs = BS.pack s
--------------------------------------------------------------------------------
data Temporary = Source FilePath | Temp FilePath | Internal BS.ByteString
writeTemp tmp =
case tmp of
Source path -> return path
Temp path -> return path
Internal str -> do -- FIXME: should use System.IO.openTempFile
let tmp = "_gf_preproc.tmp"
BS.writeFile tmp str
return tmp
readTemp tmp = do str <- keepTemp tmp
removeTemp tmp
return str
keepTemp tmp =
case tmp of
Source path -> BS.readFile path
Temp path -> BS.readFile path
Internal str -> return str
removeTemp (Temp path) = removeFile path
removeTemp _ = return ()
|
