Belp
A simple Boolean Expression Lexer and Parser written in Elixir.
Installation
The package can be installed by adding belp
to your list of dependencies in
mix.exs
:
def deps do
[
{:belp, "~> 0.1"}
]
end
Usage
iex> Belp.eval("foo and bar", foo: true, bar: false)
{:ok, true}
iex> Belp.eval!(
...> "(foo or bar) and not baz",
...> %{"foo" => false, "bar" => true, "baz" => true}
...> )
false
iex> Belp.variables("foo or bar")
{:ok, ["foo", "bar"]}
iex> Belp.variables!("foo or bar")
["foo", "bar"]
See HexDocs for the full API.