package nice_parser

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Parameters
Signature
Types
Exceptions
Parsing

package nice_parser

nice_parser
- CHANGES
- README
- Library nice_parser
  - Nice_parser
    
    RAW_PARSER
    
    NICE_PARSER
    
    Make
- Sources
  - nice_parser
    
    nice_parser.ml

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Module `Nice_parser.Make`Source

Pass your parser/lexer to this functor to obtain a nicer interface, without having to write boilerplate code.

Parameters

module P : RAW_PARSER

Signature

Types

Inherited from RAW_PARSER.

Sourcetype token = P.token

Sourcetype result = P.result

Exceptions

Nice exceptions include the location at which an error occured. A nice ParseErrror also includes the token which caused the parser to choke, which can be useful for debugging.

Sourceexception LexError of {

msg : string;
loc : Location.t;

}

Sourceexception ParseError of {

token : token;
loc : Location.t;

}

Sourceval pp_exceptions : unit -> unit

Registers a pretty printer for LexError and ParseError. This results in colorful error messages including the source location when errrors occur. With OCaml >= 4.08, the pretty printer will also quote the problematic location in the soure code and underline the error location, like so:

  File "examples/illegal.katbb", line 1, characters 10-17:
  1 | this!; is illegal!; isntit?
                ^^^^^^^
  Error: [parser] unexpected token

Parsing

Sourceval parse_string : ?pos:Lexing.position -> string -> result

Sourceval parse_chan : ?pos:Lexing.position -> in_channel -> result

Sourceval parse_file : string -> result

package nice_parser

Module Nice_parser.MakeSource

Parameters

Signature

Types

Exceptions

Parsing

Module `Nice_parser.Make`Source