WIP RFC5234.

src/GenericParser/RFC5234.purs

@@ -2,37 +2,41 @@
 -- | This module implements core rules found in appendix B.1.
 module GenericParser.RFC5234 where
 
-import Prelude (Unit, unit, bind, pure, ($), (<>), (==), (||), between, void)
+import Prelude (Unit, between, bind, void, ($))
 
 import Control.Alt ((<|>))
-import Data.Array as A
 import Data.Char as C
-import Data.Either (Either(..))
-import Data.Maybe (Maybe(..))
-import Data.String.CodeUnits as CU
 
-import GenericParser.BaseFunctions (repeat, isHexaDecimal)
+import GenericParser.BaseFunctions (isHexaDecimal)
 
-import GenericParser.Parser (Parser(..)
-                            , sat, char , digit , letter, item, many1, tryMaybe
-                            , current_input, failureError, parse, rollback, until)
+import GenericParser.Parser (Parser, char, sat)
 
 -- | RFC 5234:
 
 --ALPHA          =  %x41-5A / %x61-7A   ; A-Z / a-z
---
+
 --BIT            =  "0" / "1"
---
---CHAR           =  %x01-7F
---                  ; any 7-bit US-ASCII character,
---                  ;  excluding NUL
---
---CR             =  %x0D
---                  ; carriage return
---
---CRLF           =  CR LF
---                  ; Internet standard newline
---
+
+-- | CHAR (renamed `asciichar` to fix naming conflict with `GenericParser.char`):
+-- | any 7-bit US-ASCII character, excluding NUL.
+-- |
+-- | CHAR           =  %x01-7F
+asciichar :: forall e. Parser e Char
+asciichar = sat (\x -> between 1 127 $ C.toCharCode x)
+
+-- | CR: carriage return.
+-- |
+-- | CR             =  %x0D
+cr :: forall e. Parser e Unit
+cr = void $ char '\r'
+
+-- | CRLF: Internet standard newline.
+-- |
+-- | CRLF           =  CR LF
+crlf :: forall e. Parser e Unit
+crlf = do _ <- char '\r'
+          void $ char '\n'
+
 --CTL            =  %x00-1F / %x7F
 --                  ; controls
 --
@@ -87,9 +91,3 @@ vchar = sat (\x -> between 33 126 $ C.toCharCode x)
 -- | WSP            =  SP / HTAB
 wsp :: forall e. Parser e Char
 wsp = sp <|> htab
-
-
-crlf :: forall e. Parser e Unit
-crlf = do _ <- char '\r'
-          _ <- char '\n'
-          pure unit