Class: RuboCop::Cop::Naming::AsciiIdentifiers

Inherits:
Base
  • Object
show all
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/naming/ascii_identifiers.rb

Overview

This cop checks for non-ascii characters in identifier and constant names. Identifiers are always checked and whether constants are checked can be controlled using AsciiConstants config.

Examples:

# bad
def καλημερα # Greek alphabet (non-ascii)
end

# bad
def こんにちはと言う # Japanese character (non-ascii)
end

# bad
def hello_🍣 # Emoji (non-ascii)
end

# good
def say_hello
end

# bad
신장 = 10 # Hangul character (non-ascii)

# good
height = 10

# bad
params[:عرض_gteq] # Arabic character (non-ascii)

# good
params[:width_gteq]

AsciiConstants: true (default)

# bad
class Foö
end

FOÖ = "foo"

AsciiConstants: false

# good
class Foö
end

FOÖ = "foo"

Constant Summary collapse

IDENTIFIER_MSG =
'Use only ascii symbols in identifiers.'
CONSTANT_MSG =
'Use only ascii symbols in constants.'

Constants inherited from Base

Base::RESTRICT_ON_SEND

Instance Attribute Summary

Attributes inherited from Base

#config, #processed_source

Instance Method Summary collapse

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?, #message, #offenses, #on_investigation_end, #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

silence_warnings

Constructor Details

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

Instance Method Details

#on_new_investigationObject


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# File 'lib/rubocop/cop/naming/ascii_identifiers.rb', line 61

def on_new_investigation
  processed_source.each_token do |token|
    next if !should_check?(token) || token.text.ascii_only?

    message = token.type == :tIDENTIFIER ? IDENTIFIER_MSG : CONSTANT_MSG
    add_offense(first_offense_range(token), message: message)
  end
end