[haddock @ 2002-05-28 22:42:08 by sof]

Handle lone occurrences of '/', e.g.,

  -- | This/that.

[did this in the lexer rather than in the parser, as I couldn't
 see a way not to introduce an S/R conflict that way.]

1 files changed, 13 insertions, 1 deletions

diff --git a/src/HaddockLex.hs b/src/HaddockLex.hs
index f766222d..f1646453 100644
--- a/src/HaddockLex.hs
+++ b/src/HaddockLex.hs
@@ -11,7 +11,7 @@ module HaddockLex (
 
 import Char
 
-special = '`' : '\'' : '\"' : '@' : '/' : []
+special = '`' : '\'' : '\"' : '@' : []
 
 data Token
   = TokPara
@@ -19,6 +19,7 @@ data Token
   | TokBullet
   | TokSpecial Char
   | TokString String
+  | TokEmph String
   | TokURL String
   | TokBirdTrack
   deriving Show
@@ -33,6 +34,7 @@ tokenise "" = []
 tokenise str = case str of
   '<':cs  -> tokenise_url cs
   '\n':cs -> tokenise_newline tokenise cs
+  '/':cs  -> tokenise_emph tokenise cs
   c:cs | c `elem` special -> TokSpecial c : tokenise cs
   _other  -> tokenise_string "" str
 
@@ -42,6 +44,12 @@ tokenise_newline next cs =
    '>':cs  -> TokBirdTrack : next cs -- bird track
    _other  -> tokenise_string "" cs
 
+tokenise_emph next cs = 
+ case break newlineSlash cs of
+   (bef, aft@('\n':cs)) -> TokString ('/':bef) : next aft -- paragraph break
+   (bef, '/':cs)        -> TokEmph bef : next cs
+   _other               -> tokenise_string "" cs
+
 tokenise_para cs =
   case dropWhile nonNewlineSpace cs of   
 	-- bullet:  '*'
@@ -60,6 +68,8 @@ tokenise_para cs =
 
 nonNewlineSpace c = isSpace c && c /= '\n'
 
+newlineSlash c = c == '\n' || c == '/'
+
 -- ----------------------------------------------------------------------------
 -- Within a paragraph, we don't throw away any whitespace (except before a
 -- birdtrack, and before a paragraph break).
@@ -69,6 +79,7 @@ tokenise1 "" = []
 tokenise1 str = case str of
   '<':cs  -> tokenise_url cs
   '\n':cs -> tokenise_newline1 cs
+  '/':cs  -> tokenise_emph tokenise1 cs
   c:cs | c `elem` special -> TokSpecial c : tokenise1 cs
   _other  -> tokenise_string "" str
 
@@ -93,6 +104,7 @@ tokenise_string str cs =
     '\\':c:cs -> tokenise_string (c:str) cs
     '\n':cs   -> tokenise_string_newline str cs
     '<':cs    -> TokString (reverse str) : tokenise_url cs
+    '/':cs    -> TokString (reverse str) : tokenise_emph (tokenise_string "") cs
     c:cs | c `elem` special -> TokString (reverse str) : tokenise1 (c:cs)
          | otherwise 	    -> tokenise_string (c:str) cs