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| author | Alexander Krotov <ilabdsf@gmail.com> | 2018-02-23 17:56:55 +0300 |
|---|---|---|
| committer | Alexander Krotov <ilabdsf@gmail.com> | 2018-02-23 18:02:04 +0300 |
| commit | e810a5cc009aba006ea10a00ed9ac0e308f08ca5 (patch) | |
| tree | 64e61aee913ad1db207e8ae2b3a5195319c93639 /src/Text | |
| parent | 6b388971ea076d697a45d61bb4d11f51e55dbe23 (diff) | |
| download | pandoc-e810a5cc009aba006ea10a00ed9ac0e308f08ca5.tar.gz | |
Export improved sepBy1 from Text.Pandoc.Parsing
Diffstat (limited to 'src/Text')
| -rw-r--r-- | src/Text/Pandoc/Parsing.hs | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/Text/Pandoc/Parsing.hs b/src/Text/Pandoc/Parsing.hs index 1b66aa430..82abcb440 100644 --- a/src/Text/Pandoc/Parsing.hs +++ b/src/Text/Pandoc/Parsing.hs @@ -41,6 +41,7 @@ module Text.Pandoc.Parsing ( takeWhileP, indentWith, many1Till, manyUntil, + sepBy1', notFollowedBy', oneOfStrings, oneOfStringsCI, @@ -340,6 +341,14 @@ manyUntil p end = scan (xs, e) <- scan return (x:xs, e)) +-- | Like @sepBy1@ from Parsec, +-- but does not fail if it @sep@ succeeds and @p@ fails. +sepBy1' :: (Stream s m t) + => ParsecT s u m a + -> ParsecT s u m sep + -> ParsecT s u m [a] +sepBy1' p sep = (:) <$> p <*> many (try $ sep >> p) + -- | A more general form of @notFollowedBy@. This one allows any -- type of parser to be specified, and succeeds only if that parser fails. -- It does not consume any input. @@ -546,8 +555,8 @@ emailAddress :: Stream s m Char => ParserT s st m (String, String) emailAddress = try $ toResult <$> mailbox <*> (char '@' *> domain) where toResult mbox dom = let full = fromEntities $ mbox ++ '@':dom in (full, escapeURI $ "mailto:" ++ full) - mailbox = intercalate "." <$> (emailWord `sepby1` dot) - domain = intercalate "." <$> (subdomain `sepby1` dot) + mailbox = intercalate "." <$> (emailWord `sepBy1'` dot) + domain = intercalate "." <$> (subdomain `sepBy1'` dot) dot = char '.' subdomain = many1 $ alphaNum <|> innerPunct -- this excludes some valid email addresses, since an @@ -564,9 +573,6 @@ emailAddress = try $ toResult <$> mailbox <*> (char '@' *> domain) return (x:xs) isEmailChar c = isAlphaNum c || isEmailPunct c isEmailPunct c = c `elem` "!\"#$%&'*+-/=?^_{|}~;" - -- note: sepBy1 from parsec consumes input when sep - -- succeeds and p fails, so we use this variant here. - sepby1 p sep = (:) <$> p <*> many (try $ sep >> p) uriScheme :: Stream s m Char => ParserT s st m String |