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A static code analysis tool with a focus on code consistency and teaching.
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Files
lib/credo/check/readability/module_attribute_names.ex
defmodule Credo.Check.Readability.ModuleAttributeNames do
@moduledoc """
Module attribute names are always written in snake_case in Elixir.
# snake_case:
@inbox_name "incoming"
# not snake_case
@inboxName "incoming"
Like all `Readability` issues, this one is not a technical concern.
But you can improve the odds of others reading and liking your code by making
it easier to follow.
"""
@explanation [check: @moduledoc]
alias Credo.Code.Name
use Credo.Check, base_priority: :high
def run(source_file, params \\ []) do
issue_meta = IssueMeta.for(source_file, params)
Credo.Code.traverse(source_file, &traverse(&1, &2, issue_meta))
end
defp traverse({:@, _meta, [{name, meta, _arguments}]} = ast, issues, issue_meta) do
case issue_for_name(issue_meta, name, meta) do
nil -> {ast, issues}
val -> {ast, issues ++ [val]}
end
end
defp traverse(ast, issues, _source_file) do
{ast, issues}
end
defp issue_for_name(issue_meta, name, meta) do
unless name |> to_string |> Name.snake_case? do
issue_for(issue_meta, meta[:line], "@#{name}")
end
end
defp issue_for(issue_meta, line_no, trigger) do
format_issue issue_meta,
message: "Module attribute names should be written in snake_case.",
trigger: trigger,
line_no: line_no
end
end