Text.Parsec.Char

Description

Commonly used character parsers.

Synopsis

Documentation

oneOf :: Stream s m Char => [Char] -> ParsecT s u m CharSource

oneOf cs succeeds if the current character is in the supplied list of characters cs. Returns the parsed character. See also satisfy.

   vowel  = oneOf "aeiou"

noneOf :: Stream s m Char => [Char] -> ParsecT s u m CharSource

As the dual of oneOf, noneOf cs succeeds if the current character not in the supplied list of characters cs. Returns the parsed character.

  consonant = noneOf "aeiou"

spaces :: Stream s m Char => ParsecT s u m ()Source

Skips zero or more white space characters. See also skipMany.

space :: Stream s m Char => ParsecT s u m CharSource

Parses a white space character (any character which satisfies isSpace) Returns the parsed character.

newline :: Stream s m Char => ParsecT s u m CharSource

Parses a newline character ('\n'). Returns a newline character.

crlf :: Stream s m Char => ParsecT s u m CharSource

Parses a carriage return character ('\r') followed by a newline character ('\n'). Returns a newline character.

Parses a CRLF (see crlf) or LF (see newline) end-of-line. Returns a newline character ('\n').

 endOfLine = newline <|> crlf

tab :: Stream s m Char => ParsecT s u m CharSource

Parses a tab character ('\t'). Returns a tab character.

upper :: Stream s m Char => ParsecT s u m CharSource

Parses an upper case letter (a character between 'A' and 'Z'). Returns the parsed character.

lower :: Stream s m Char => ParsecT s u m CharSource

Parses a lower case character (a character between 'a' and 'z'). Returns the parsed character.

alphaNum :: Stream s m Char => ParsecT s u m CharSource

Parses a letter or digit (a character between '0' and '9'). Returns the parsed character.

letter :: Stream s m Char => ParsecT s u m CharSource

Parses a letter (an upper case or lower case character). Returns the parsed character.

digit :: Stream s m Char => ParsecT s u m CharSource

Parses a digit. Returns the parsed character.

hexDigit :: Stream s m Char => ParsecT s u m CharSource

Parses a hexadecimal digit (a digit or a letter between 'a' and 'f' or 'A' and 'F'). Returns the parsed character.

octDigit :: Stream s m Char => ParsecT s u m CharSource

Parses an octal digit (a character between '0' and '7'). Returns the parsed character.

char :: Stream s m Char => Char -> ParsecT s u m CharSource

char c parses a single character c. Returns the parsed character (i.e. c).

  semiColon  = char ';'

anyChar :: Stream s m Char => ParsecT s u m CharSource

This parser succeeds for any character. Returns the parsed character.

satisfy :: Stream s m Char => (Char -> Bool) -> ParsecT s u m CharSource

The parser satisfy f succeeds for any character for which the supplied function f returns True. Returns the character that is actually parsed.

string :: Stream s m Char => String -> ParsecT s u m StringSource

string s parses a sequence of characters given by s. Returns the parsed string (i.e. s).

  divOrMod    =   string "div" 
              <|> string "mod"