Skip zero or more bytes worth of white space. More complex parsers are free to consider comments as white space.

This token parser parses a single literal character. Returns the literal character value. This parsers deals correctly with escape sequences. The literal character is parsed according to the grammar rules defined in the Haskell report (which matches most programming languages quite closely).

This token parser parses a literal string. Returns the literal string value. This parsers deals correctly with escape sequences and gaps. The literal string is parsed according to the grammar rules defined in the Haskell report (which matches most programming languages quite closely).

This token parser behaves as stringLiteral, but for single-quoted strings.

This token parser parses a natural number (a non-negative whole number). Returns the value of the number. The number can be specified in decimal, hexadecimal or octal. The number is parsed according to the grammar rules in the Haskell report.

This token parser parses an integer (a whole number). This parser is like natural except that it can be prefixed with sign (i.e. '-' or '+'). Returns the value of the number. The number can be specified in decimal, hexadecimal or octal. The number is parsed according to the grammar rules in the Haskell report.

This token parser parses a floating point value. Returns the value of the number. The number is parsed according to the grammar rules defined in the Haskell report.

This token parser parses either natural or a float. Returns the value of the number. This parsers deals with any overlap in the grammar rules for naturals and floats. The number is parsed according to the grammar rules defined in the Haskell report.

This token parser is like naturalOrDouble, but handles leading - or +.

This token parser parses a floating point value. Returns the value of the number. The number is parsed according to the grammar rules defined in the Haskell report.

This token parser parses either natural or a scientific. Returns the value of the number. This parsers deals with any overlap in the grammar rules for naturals and floats. The number is parsed according to the grammar rules defined in the Haskell report.

This token parser is like naturalOrScientific, but handles leading - or +.

Token parser symbol s parses string s and skips trailing white space.

Token parser textSymbol t parses text s and skips trailing white space.

Token parser symbolic s parses char s and skips trailing white space.

Token parser parens p parses p enclosed in parenthesis, returning the value of p.

Token parser braces p parses p enclosed in braces ('{' and '}'), returning the value of p.

Token parser angles p parses p enclosed in angle brackets ('<' and '>'), returning the value of p.

Token parser brackets p parses p enclosed in brackets ('[' and ']'), returning the value of p.

Token parser comma parses the character ',' and skips any trailing white space. Returns the string ",".

Token parser colon parses the character ':' and skips any trailing white space. Returns the string ":".

Token parser dot parses the character '.' and skips any trailing white space. Returns the string ".".

Token parser semiSep p parses zero or more occurrences of p separated by semi. Returns a list of values returned by p.

Token parser semiSep1 p parses one or more occurrences of p separated by semi. Returns a list of values returned by p.

Token parser commaSep p parses zero or more occurrences of p separated by comma. Returns a list of values returned by p.

Token parser commaSep1 p parses one or more occurrences of p separated by comma. Returns a list of values returned by p.

Additional functionality that is needed to tokenize input while ignoring whitespace.

This is a parser transformer you can use to disable the automatic trailing space consumption of a Token parser.

This is a parser transformer you can use to disable the automatic trailing newline (but not whitespace-in-general) consumption of a Token parser.

This is a parser transformer you can use to disable syntax highlighting over a range of text you are parsing.

Parses a non-negative whole number in the decimal system. Returns the value of the number.

This parser does NOT swallow trailing whitespace

Parses a non-negative whole number in the hexadecimal system. The number should be prefixed with "x" or "X". Returns the value of the number.

This parser does NOT swallow trailing whitespace

Parses a non-negative whole number in the octal system. The number should be prefixed with "o" or "O". Returns the value of the number.

This parser does NOT swallow trailing whitespace

This parser parses a character literal without the surrounding quotation marks.

This parser does NOT swallow trailing whitespace

This parser parses an integer (a whole number). This parser is like natural except that it can be prefixed with sign (i.e. '-' or '+'). Returns the value of the number. The number can be specified in decimal, hexadecimal or octal. The number is parsed according to the grammar rules in the Haskell report.

This parser does NOT swallow trailing whitespace.

Also, unlike the integer parser, this parser does not admit spaces between the sign and the number.

Used to describe an input style for constructors, values, operators, etc.

Lift an identifier style into a monad transformer

Using over from the lens package:

liftIdentifierStyle = over styleChars lift

Parse a non-reserved identifier or symbol

parse a reserved operator or identifier using a given style

parse a reserved operator or identifier using a given style given Text.

This lens can be used to update the name for this style of identifier.

styleName :: Lens' (IdentifierStyle m) String

This lens can be used to update the action used to recognize the first letter in an identifier.

styleStart :: Lens' (IdentifierStyle m) (m Char)

This lens can be used to update the action used to recognize subsequent letters in an identifier.

styleLetter :: Lens' (IdentifierStyle m) (m Char)

This is a traversal of both actions in contained in an IdentifierStyle.

styleChars :: Traversal (IdentifierStyle m) (IdentifierStyle n) (m Char) (n Char)

This is a lens that can be used to modify the reserved identifier set.

styleReserved :: Lens' (IdentifierStyle m) (HashSet String)

This is a lens that can be used to modify the highlight used for this identifier set.

styleHighlight :: Lens' (IdentifierStyle m) Highlight

This is a lens that can be used to modify the highlight used for reserved identifiers in this identifier set.

styleReservedHighlight :: Lens' (IdentifierStyle m) Highlight

This is a traversal that can be used to modify the highlights used for both non-reserved and reserved identifiers in this identifier set.

styleHighlights :: Traversal' (IdentifierStyle m) Highlight