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credo
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A static code analysis tool with a focus on code consistency and teaching.
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lib/credo/cli/output/issue_helper.ex
defmodule Credo.CLI.Output.IssueHelper do
alias Credo.CLI.Filename
alias Credo.CLI.Output
alias Credo.CLI.Output.UI
alias Credo.Execution
alias Credo.Issue
alias Credo.SourceFile
@indent 8
def print_issues(issues, source_file_map, %Execution{format: _} = exec, term_width) do
Enum.each(issues, fn(%Issue{filename: filename} = issue) ->
source_file = source_file_map[filename]
do_print_issue(issue, source_file, exec, term_width)
end)
end
def do_print_issue(%Issue{check: _check, message: message, filename: filename, priority: _priority} = issue, _source_file,
%Execution{format: "flycheck"} = _exec, _term_width) do
tag = Output.check_tag(issue, false)
[
filename |> to_string, Filename.pos_suffix(issue.line_no, issue.column), ": ", tag, ": ", message,
]
|> UI.puts
end
def do_print_issue(%Issue{check: check, message: message, filename: filename, priority: priority} = issue, _source_file,
%Execution{format: "oneline"} = _exec, _term_width) do
inner_color = Output.check_color(issue)
message_color = inner_color
filename_color = :default_color
[
inner_color,
Output.check_tag(check.category), " ", priority |> Output.priority_arrow, " ",
:reset, filename_color, :faint, filename |> to_string,
:default_color, :faint, Filename.pos_suffix(issue.line_no, issue.column),
:reset, message_color, " ", message,
]
|> UI.puts
end
def do_print_issue(%Issue{check: check, message: message, filename: filename, priority: priority} = issue, source_file,
%Execution{format: _} = exec, term_width) do
outer_color = Output.check_color(issue)
inner_color = Output.issue_color(issue)
message_color = outer_color
filename_color = :default_color
tag_style =
if outer_color == inner_color do
:faint
else
:bright
end
message
|> UI.wrap_at(term_width - @indent)
|> print_issue_message(check, outer_color, message_color, tag_style, priority)
[
UI.edge(outer_color, @indent),
filename_color, :faint, filename |> to_string,
:default_color, :faint, Filename.pos_suffix(issue.line_no, issue.column),
:conceal, " #", :reset, :faint, "(#{issue.scope})"
]
|> UI.puts
if exec.verbose do
print_issue_line(issue, source_file, inner_color, outer_color, term_width)
UI.puts_edge([outer_color, :faint])
end
end
defp print_issue_message([first_line | other_lines], check, outer_color, message_color, tag_style, priority) do
[
UI.edge(outer_color),
outer_color,
tag_style,
Output.check_tag(check.category), " ", priority |> Output.priority_arrow,
:normal, message_color, " ", first_line,
]
|> UI.puts
other_lines
|> Enum.each(&print_issue_message(&1, outer_color, message_color))
end
defp print_issue_message("", _outer_color, _message_color) do
end
defp print_issue_message(message, outer_color, message_color) do
[
UI.edge(outer_color),
outer_color,
String.duplicate(" ", @indent - 3),
:normal, message_color, " ", message,
]
|> UI.puts
end
defp print_issue_line(%Issue{line_no: nil}, _source_file, _inner_color, _outer_color, _term_width) do
nil
end
defp print_issue_line(%Issue{} = issue, source_file, inner_color, outer_color, term_width) do
raw_line = SourceFile.line_at(source_file, issue.line_no)
line = Credo.Backports.String.trim(raw_line)
[outer_color, :faint]
|> UI.edge
|> UI.puts
[
UI.edge([outer_color, :faint]), :cyan, :faint,
String.duplicate(" ", @indent-2),
UI.truncate(line, term_width - @indent)
]
|> UI.puts
print_issue_trigger_marker(issue, raw_line, inner_color, outer_color)
end
defp print_issue_trigger_marker(%Issue{column: nil}, _line, _inner_color, _outer_color) do
nil
end
defp print_issue_trigger_marker(%Issue{} = issue, line, inner_color, outer_color) do
offset = String.length(line) - String.length(Credo.Backports.String.trim(line))
x = max(issue.column - offset - 1, 0) # column is one-based
w =
case issue.trigger do
nil -> 1
atom -> atom |> to_string |> String.length
end
[
UI.edge([outer_color, :faint], @indent),
inner_color, String.duplicate(" ", x),
:faint, String.duplicate("^", w)
]
|> UI.puts
end
end