blob: a406f3e42da8ce9e8fb1d4e48c6a914d1ee08a2f (
plain) (
blame)
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
|
{
module HaddockParse (parseParas, parseString) where
import HaddockLex
import HaddockTypes
}
%tokentype { Token }
%token SQUO { TokSpecial '\'' }
DQUO { TokSpecial '\"' }
'/' { TokSpecial '/' }
'[' { TokSpecial '[' }
']' { TokSpecial ']' }
URL { TokURL $$ }
'*' { TokBullet }
'(n)' { TokNumber }
PARA { TokPara }
STRING { TokString $$ }
%monad { Either String }
%name parseParas doc
%name parseString seq
%%
doc :: { ParsedDoc }
: apara PARA doc { docAppend $1 $3 }
| PARA doc { $2 }
| apara { $1 }
| {- empty -} { DocEmpty }
apara :: { ParsedDoc }
: ulpara { DocUnorderedList [$1] }
| olpara { DocOrderedList [$1] }
| para { $1 }
ulpara :: { ParsedDoc }
: '*' para { $2 }
olpara :: { ParsedDoc }
: '(n)' para { $2 }
para :: { ParsedDoc }
: seq { docParagraph $1 }
seq :: { ParsedDoc }
: elem seq { DocAppend $1 $2 }
| elem { $1 }
elem :: { ParsedDoc }
: STRING { DocString $1 }
| '/' STRING '/' { DocEmphasis (DocString $2) }
| URL { DocURL $1 }
| SQUO STRING SQUO { DocIdentifier $2 }
| DQUO STRING DQUO { DocModule $2 }
| '[' seq ']' { DocMonospaced $2 }
{
happyError :: [Token] -> Either String a
happyError toks =
Left ("parse error in doc string: " ++ show (take 3 toks))
-- Either monad (we can't use MonadError because GHC < 5.00 has
-- an older incompatible version).
instance Monad (Either String) where
return = Right
Left l >>= _ = Left l
Right r >>= k = k r
fail msg = Left msg
}
|
