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
191
192
193
194
195
196
197
198
199
200
201
202
203
|
-----------------------------------------------------------------------------
-- |
-- Module : Haddock.Backends.Html.Util
-- Copyright : (c) Simon Marlow 2003-2006,
-- David Waern 2006-2009,
-- Mark Lentczner 2010
-- License : BSD-like
--
-- Maintainer : haddock@projects.haskell.org
-- Stability : experimental
-- Portability : portable
-----------------------------------------------------------------------------
module Haddock.Backends.Xhtml.Utils (
renderToString,
namedAnchor, linkedAnchor,
spliceURL,
groupId,
(<+>), char,
keyword, punctuate,
braces, brackets, pabrackets, parens, parenList, ubxParenList,
arrow, comma, dcolon, dot, darrow, equals, forallSymbol, quote,
hsep,
collapseSection, collapseToggle, collapseControl,
) where
import Haddock.GhcUtils
import Haddock.Utils
import Data.Maybe
import Text.XHtml hiding ( name, title, p, quote )
import qualified Text.XHtml as XHtml
import GHC ( SrcSpan(..), srcSpanStartLine, Name )
import Module ( Module )
import Name ( getOccString, nameOccName, isValOcc )
spliceURL :: Maybe FilePath -> Maybe Module -> Maybe GHC.Name ->
Maybe SrcSpan -> String -> String
spliceURL maybe_file maybe_mod maybe_name maybe_loc url = run url
where
file = fromMaybe "" maybe_file
mdl = case maybe_mod of
Nothing -> ""
Just m -> moduleString m
(name, kind) =
case maybe_name of
Nothing -> ("","")
Just n | isValOcc (nameOccName n) -> (escapeStr (getOccString n), "v")
| otherwise -> (escapeStr (getOccString n), "t")
line = case maybe_loc of
Nothing -> ""
Just span_ ->
case span_ of
RealSrcSpan span__ ->
show $ srcSpanStartLine span__
UnhelpfulSpan _ ->
error "spliceURL UnhelpfulSpan"
run "" = ""
run ('%':'M':rest) = mdl ++ run rest
run ('%':'F':rest) = file ++ run rest
run ('%':'N':rest) = name ++ run rest
run ('%':'K':rest) = kind ++ run rest
run ('%':'L':rest) = line ++ run rest
run ('%':'%':rest) = "%" ++ run rest
run ('%':'{':'M':'O':'D':'U':'L':'E':'}':rest) = mdl ++ run rest
run ('%':'{':'F':'I':'L':'E':'}':rest) = file ++ run rest
run ('%':'{':'N':'A':'M':'E':'}':rest) = name ++ run rest
run ('%':'{':'K':'I':'N':'D':'}':rest) = kind ++ run rest
run ('%':'{':'M':'O':'D':'U':'L':'E':'/':'.':'/':c:'}':rest) =
map (\x -> if x == '.' then c else x) mdl ++ run rest
run ('%':'{':'F':'I':'L':'E':'/':'/':'/':c:'}':rest) =
map (\x -> if x == '/' then c else x) file ++ run rest
run ('%':'{':'L':'I':'N':'E':'}':rest) = line ++ run rest
run (c:rest) = c : run rest
renderToString :: Bool -> Html -> String
renderToString debug html
| debug = renderHtml html
| otherwise = showHtml html
hsep :: [Html] -> Html
hsep [] = noHtml
hsep htmls = foldr1 (\a b -> a+++" "+++b) htmls
infixr 8 <+>
(<+>) :: Html -> Html -> Html
a <+> b = a +++ toHtml " " +++ b
keyword :: String -> Html
keyword s = thespan ! [theclass "keyword"] << toHtml s
equals, comma :: Html
equals = char '='
comma = char ','
char :: Char -> Html
char c = toHtml [c]
quote :: Html -> Html
quote h = char '`' +++ h +++ '`'
parens, brackets, pabrackets, braces :: Html -> Html
parens h = char '(' +++ h +++ char ')'
brackets h = char '[' +++ h +++ char ']'
pabrackets h = toHtml "[:" +++ h +++ toHtml ":]"
braces h = char '{' +++ h +++ char '}'
punctuate :: Html -> [Html] -> [Html]
punctuate _ [] = []
punctuate h (d0:ds) = go d0 ds
where
go d [] = [d]
go d (e:es) = (d +++ h) : go e es
parenList :: [Html] -> Html
parenList = parens . hsep . punctuate comma
ubxParenList :: [Html] -> Html
ubxParenList = ubxparens . hsep . punctuate comma
ubxparens :: Html -> Html
ubxparens h = toHtml "(#" +++ h +++ toHtml "#)"
dcolon, arrow, darrow, forallSymbol :: Bool -> Html
dcolon unicode = toHtml (if unicode then "∷" else "::")
arrow unicode = toHtml (if unicode then "→" else "->")
darrow unicode = toHtml (if unicode then "⇒" else "=>")
forallSymbol unicode = if unicode then toHtml "∀" else keyword "forall"
dot :: Html
dot = toHtml "."
-- | Generate a named anchor
namedAnchor :: String -> Html -> Html
namedAnchor n = anchor ! [XHtml.name n]
linkedAnchor :: String -> Html -> Html
linkedAnchor n = anchor ! [href ('#':n)]
-- | generate an anchor identifier for a group
groupId :: String -> String
groupId g = makeAnchorId ("g:" ++ g)
--
-- A section of HTML which is collapsible.
--
-- | Attributes for an area that can be collapsed
collapseSection :: String -> Bool -> String -> [HtmlAttr]
collapseSection id_ state classes = [ identifier sid, theclass cs ]
where cs = unwords (words classes ++ [pick state "show" "hide"])
sid = "section." ++ id_
-- | Attributes for an area that toggles a collapsed area
collapseToggle :: String -> [HtmlAttr]
collapseToggle id_ = [ strAttr "onclick" js ]
where js = "toggleSection('" ++ id_ ++ "')";
-- | Attributes for an area that toggles a collapsed area,
-- and displays a control.
collapseControl :: String -> Bool -> String -> [HtmlAttr]
collapseControl id_ state classes =
[ identifier cid, theclass cs ] ++ collapseToggle id_
where cs = unwords (words classes ++ [pick state "collapser" "expander"])
cid = "control." ++ id_
pick :: Bool -> a -> a -> a
pick True t _ = t
pick False _ f = f
|
