#
# This file is part of elixir-lang.
#
# Copyright 2013-2023 Elixir Contributors
# https://github.com/elixir-lang/elixir/commits/v1.17.2/lib/elixir/lib/string/chars.ex
#
# 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.
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# SPDX-License-Identifier: Apache-2.0
#

import Kernel, except: [to_string: 1]

defprotocol String.Chars do
  @moduledoc ~S"""
  The `String.Chars` protocol is responsible for
  converting a structure to a binary (only if applicable).

  The only function required to be implemented is
  `to_string/1`, which does the conversion.

  The `to_string/1` function automatically imported
  by `Kernel` invokes this protocol. String
  interpolation also invokes `to_string/1` in its
  arguments. For example, `"foo#{bar}"` is the same
  as `"foo" <> to_string(bar)`.
  """

  @doc """
  Converts `term` to a string.
  """
  @spec to_string(t) :: String.t()
  def to_string(term)
end
