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credo
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A static code analysis tool with a focus on code consistency and teaching.
Current section
Files
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Files
lib/credo/check/readability/semicolons.ex
defmodule Credo.Check.Readability.Semicolons do
@moduledoc """
Don't use ; to separate statements and expressions.
Statements and expressions should be separated by lines.
# preferred
a = 1
b = 2
# NOT preferred
a = 1; b = 2
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
]
use Credo.Check, base_priority: :high
@doc false
def run(source_file, params \\ []) do
issue_meta = IssueMeta.for(source_file, params)
source_file
|> Credo.Code.to_tokens()
|> collect_issues([], issue_meta)
end
defp collect_issues([], acc, _issue_meta), do: acc
defp collect_issues([{:";", {line_no, column1, _}} | rest], acc, issue_meta) do
acc = [issue_for(issue_meta, line_no, column1) | acc]
collect_issues(rest, acc, issue_meta)
end
defp collect_issues([_ | rest], acc, issue_meta), do: collect_issues(rest, acc, issue_meta)
def issue_for(issue_meta, line_no, column) do
format_issue(
issue_meta,
message: "Don't use ; to separate statements and expressions",
line_no: line_no,
column: column,
trigger: ";"
)
end
end