ExSel

Simple expression language for elixir.

Installation

The package can be installed by adding ex_sel to your list of dependencies in mix.exs:

def deps do
  [
    {:ex_sel, "~> 0.1.0"}
  ]
end

Basic Usage

iex> ExSel.aexpr("8 + 2 / 4")
{:ok, {:+, [8, {:/, [2, 4]}]}}

iex> ExSel.bexpr("8 + 2 > 4")
{:ok, {:>, [{:+, [8, 2]}, 4]}}

iex> {:ok, ast} = ExSel.aexpr("varA + varB / 4")
iex> my_vars = %{"varA" => 8, "varB" => 2}
iex> ExSel.eval!(ast, my_vars)
8.5

Documentation can be found at https://hexdocs.pm/ex_sel.

License

Copyright 2018 Stefan Lapers

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.