Class: RuboCop::Cop::Lint::MultipleCompare
- Defined in:
- lib/rubocop/cop/lint/multiple_compare.rb
Overview
In math and Python, we can use ‘x < y < z` style comparison to compare multiple value. However, we can’t use the comparison in Ruby. However, the comparison is not syntax error. This cop checks the bad usage of comparison operators.
Constant Summary collapse
- MSG =
'Use the `&&` operator to compare multiple values.'
Constants included from Util
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offenses, #processed_source
Instance Method Summary collapse
Methods inherited from Cop
#add_offense, all, autocorrect_incompatible_with, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version
Methods included from AST::Sexp
Methods included from NodePattern::Macros
#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first
Methods included from AutocorrectLogic
#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?
Methods included from IgnoredNode
#ignore_node, #ignored_node?, #part_of_ignored_node?
Methods included from Util
begins_its_line?, comment_line?, double_quotes_required?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, tokens, trim_string_interporation_escape_character
Methods included from PathUtil
absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_path
Constructor Details
This class inherits a constructor from RuboCop::Cop::Cop
Instance Method Details
#autocorrect(node) ⇒ Object
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# File 'lib/rubocop/cop/lint/multiple_compare.rb', line 37 def autocorrect(node) center = multiple_compare?(node) new_center = "#{center.source} && #{center.source}" lambda do |corrector| corrector.replace(center.source_range, new_center) end end |
#on_send(node) ⇒ Object
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# File 'lib/rubocop/cop/lint/multiple_compare.rb', line 31 def on_send(node) return unless multiple_compare?(node) add_offense(node) end |