Class: RuboCop::Cop::Style::FormatStringToken

Inherits:
Base
  • Object
show all
Includes:
ConfigurableEnforcedStyle
Defined in:
lib/rubocop/cop/style/format_string_token.rb

Overview

Use a consistent style for named format string tokens.

NOTE: `unannotated` style cop only works for strings which are passed as arguments to those methods: `printf`, `sprintf`, `format`, `%`. The reason is that unannotated format is very similar to encoded URLs or Date/Time formatting strings.

It is allowed to contain unannotated token if the number of them is less than or equals to `MaxUnannotatedPlaceholdersAllowed`.

Examples:

EnforcedStyle: annotated (default)


# bad
format('%{greeting}', greeting: 'Hello')
format('%s', 'Hello')

# good
format('%<greeting>s', greeting: 'Hello')

EnforcedStyle: template


# bad
format('%<greeting>s', greeting: 'Hello')
format('%s', 'Hello')

# good
format('%{greeting}', greeting: 'Hello')

EnforcedStyle: unannotated


# bad
format('%<greeting>s', greeting: 'Hello')
format('%{greeting}', greeting: 'Hello')

# good
format('%s', 'Hello')

MaxUnannotatedPlaceholdersAllowed: 0


# bad
format('%06d', 10)
format('%s %s.', 'Hello', 'world')

# good
format('%<number>06d', number: 10)

MaxUnannotatedPlaceholdersAllowed: 1 (default)


# bad
format('%s %s.', 'Hello', 'world')

# good
format('%06d', 10)

Constant Summary

Constants inherited from Base

Base::RESTRICT_ON_SEND

Constants included from Util

Util::LITERAL_REGEX

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

Methods included from ConfigurableEnforcedStyle

#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_configured?, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected

Methods inherited from Base

#add_global_offense, #add_offense, autocorrect_incompatible_with, badge, #callbacks_needed, callbacks_needed, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, department, documentation_url, exclude_from_registry, #excluded_file?, #external_dependency_checksum, inherited, #initialize, joining_forces, lint?, match?, #offenses, #on_investigation_end, #on_new_investigation, #on_other_file, #ready, #relevant_file?, support_autocorrect?, support_multiple_source?, #target_rails_version, #target_ruby_version

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #correctable?, #disable_uncorrectable?, #safe_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

add_parentheses, args_begin, args_end, begins_its_line?, comment_line?, comment_lines?, double_quotes_required?, escape_string, first_part_of_call_chain, indent, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, trim_string_interporation_escape_character

Methods included from PathUtil

absolute?, hidden_dir?, hidden_file?, hidden_file_in_not_hidden_dir?, match_path?, maybe_hidden_file?, relative_path, smart_path

Constructor Details

This class inherits a constructor from RuboCop::Cop::Base

Instance Method Details

#on_str(node) ⇒ Object


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# File 'lib/rubocop/cop/style/format_string_token.rb', line 64

def on_str(node)
  return unless node.value.include?('%')
  return if node.each_ancestor(:xstr, :regexp).any?

  detections = collect_detections(node)
  return if detections.empty?
  return if allowed_unannotated?(detections)

  detections.each do |detected_style, token_range|
    if detected_style == style
      correct_style_detected
    else
      style_detected(detected_style)
      add_offense(token_range, message: message(detected_style))
    end
  end
end