ExParsec

A parser combinator library inspired by Parsec.

Usage

Add ExParsec as a dependency in your mix.exs file:

def deps do
  [ {:ex_parsec, "~> 0.0.0"} ]
end

After you are done, run mix deps.get in your shell to fetch and compile ExParsec. Start an interactive Elixir shell with iex -S mix.

iex> import ExParsec.Base
nil
iex> ExParsec.parse_string "foo", many(any_char())
{:ok, nil, ["f", "o", "o"]}
iex> ExParsec.parse_string "[x]", between(char("["), char("x"), char("]"))
{:ok, nil, "x"}
iex> ExParsec.parse_string "  spa ces  ",
                           sequence([skip_many(space),
                                     times(any_char(), 3),
                                     skip(space),
                                     times(any_char(), 3),
                                     skip_many(space),
                                     eof])
{:ok, nil, [nil, ["s", "p", "a"], nil, ["c", "e", "s"], nil, nil]}

Features

• Can parse context-sensitive grammars.
• High-quality error messages readable by humans.
• Full UTF-8 string support.
• Non-text input can be parsed (e.g. tokens).
• Support for theoretically infinitely large files.
• Simple, extensible API surface.

Examples