defmodule ExDiceRoller.Sigil do
  @moduledoc "Functionality for sigil usage."

  alias ExDiceRoller.{Compiler, Parser, Tokenizer}

  @doc """
  Handles the sigil `~a` for dice rolling.

  Returns the compiled version of the dice roll.

  ## Example

  ```elixir
    iex>
  ```
  """
  def sigil_a(string, []) do
    {:ok, tokens} = Tokenizer.tokenize(string)
    {:ok, parsed} = Parser.parse(tokens)
    Compiler.compile(parsed)
  end

  def sigil_a(string, [mod]) when mod == ?r do
    {:ok, tokens} = Tokenizer.tokenize(string)
    {:ok, parsed} = Parser.parse(tokens)
    fun = Compiler.compile(parsed)
    fun.([])
  end
end