module RuboCop::Cop::Style::MethodCallWithArgsParentheses::OmitParentheses
Style
omit_parentheses
rubocop:disable Metrics/ModuleLength, Metrics/CyclomaticComplexity
Constants
- OMIT_MSG
- TRAILING_WHITESPACE_REGEX
Private Instance Methods
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 80 def allowed_camel_case_method_call?(node) node.camel_case_method? && (node.arguments.none? || cop_config['AllowParenthesesInCamelCaseMethod']) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 191 def allowed_chained_call_with_parentheses?(node) return false unless cop_config['AllowParenthesesInChaining'] previous = node.descendants.first return false unless previous&.send_type? previous.parenthesized? || allowed_chained_call_with_parentheses?(previous) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 187 def allowed_multiline_call_with_parentheses?(node) cop_config['AllowParenthesesInMultilineCall'] && node.multiline? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 85 def allowed_string_interpolation_method_call?(node) cop_config['AllowParenthesesInStringInterpolation'] && inside_string_interpolation?(node) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 200 def ambiguous_literal?(node) splat?(node) || ternary_if?(node) || regexp_slash_literal?(node) || unary_literal?(node) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 180 def ambiguous_range_argument?(node) return true if (first_arg = node.first_argument)&.range_type? && first_arg.begin.nil? return true if (last_arg = node.last_argument)&.range_type? && last_arg.end.nil? false end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 232 def assigned_before?(node, target) node.assignment? && node.loc.operator.begin < target.loc.begin end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 240 def assignment_in_condition?(node) parent = node.parent return false unless parent grandparent = parent.parent return false unless grandparent parent.assignment? && (grandparent.conditional? || grandparent.when_type?) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 34 def autocorrect(corrector, node) range = args_begin(node) if parentheses_at_the_end_of_multiline_call?(node) # Whitespace after line continuation (`\ `) is a syntax error with_whitespace = range_with_surrounding_space(range, side: :right, newlines: false) corrector.replace(with_whitespace, ' \\') else corrector.replace(range, ' ') end corrector.remove(node.loc.end) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 162 def call_as_argument_or_chain?(node) node.parent&.type?(:call, :super, :yield) && !assigned_before?(node.parent, node) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 155 def call_in_argument_with_block?(node) parent = node.parent&.any_block_type? && node.parent.parent return false unless parent parent.type?(:call, :super, :yield) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 110 def call_in_literals?(node) parent = node.parent&.any_block_type? ? node.parent.parent : node.parent return false unless parent parent.type?(:pair, :array, :range) || splat?(parent) || ternary_if?(parent) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 119 def call_in_logical_operators?(node) parent = node.parent&.any_block_type? ? node.parent.parent : node.parent return false unless parent logical_operator?(parent) || (parent.send_type? && parent.arguments.any? { |argument| logical_operator?(argument) }) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 167 def call_in_match_pattern?(node) return false unless (parent = node.parent) parent.any_match_pattern_type? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 128 def call_in_optional_arguments?(node) node.parent&.type?(:optarg, :kwoptarg) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 132 def call_in_single_line_inheritance?(node) node.parent&.class_type? && node.parent.single_line? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 137 def call_with_ambiguous_arguments?(node) call_with_braced_block?(node) || call_in_argument_with_block?(node) || call_as_argument_or_chain?(node) || call_in_match_pattern?(node) || hash_literal_in_arguments?(node) || ambiguous_range_argument?(node) || node.descendants.any? do |n| n.type?(:forwarded_args, :any_block) || ambiguous_literal?(n) || logical_operator?(n) end end
rubocop:disable Metrics/PerceivedComplexity
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 151 def call_with_braced_block?(node) node.type?(:call, :super) && node.block_node&.braces? end
rubocop:enable Metrics/PerceivedComplexity
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 250 def forwards_anonymous_rest_arguments?(node) return false unless (last_argument = node.last_argument) return true if last_argument.forwarded_restarg_type? last_argument.hash_type? && last_argument.children.any?(&:forwarded_kwrestarg_type?) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 216 def hash_literal?(node) node.hash_type? && node.braces? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 173 def hash_literal_in_arguments?(node) node.arguments.any? do |n| hash_literal?(n) || (n.send_type? && node.descendants.any? { |descendant| hash_literal?(descendant) }) end end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 50 def inside_endless_method_def?(node) # parens are required around arguments inside an endless method node.each_ancestor(:any_def).any?(&:endless?) && node.arguments.any? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 236 def inside_string_interpolation?(node) node.ancestors.drop_while { |a| !a.begin_type? }.any?(&:dstr_type?) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 64 def last_expression?(node) !(node.parent&.assignment? ? node.parent.right_sibling : node.right_sibling) end
Require hash value omission be enclosed in parentheses to prevent the following issue: bugs.ruby-lang.org/issues/18396.
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 97 def legitimate_call_with_parentheses?(node) # rubocop:disable Metrics/PerceivedComplexity call_in_literals?(node) || node.parent&.when_type? || call_with_ambiguous_arguments?(node) || call_in_logical_operators?(node) || call_in_optional_arguments?(node) || call_in_single_line_inheritance?(node) || allowed_multiline_call_with_parentheses?(node) || allowed_chained_call_with_parentheses?(node) || assignment_in_condition?(node) || forwards_anonymous_rest_arguments?(node) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 212 def logical_operator?(node) node.operator_keyword? && node.logical_operator? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 72 def method_call_before_constant_resolution?(node) node.parent&.const_type? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 46 def offense_range(node) node.loc.begin.join(node.loc.end) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 18 def omit_parentheses(node) # rubocop:disable Metrics/PerceivedComplexity return unless node.parenthesized? return if inside_endless_method_def?(node) return if require_parentheses_for_hash_value_omission?(node) return if syntax_like_method_call?(node) return if method_call_before_constant_resolution?(node) return if super_call_without_arguments?(node) return if legitimate_call_with_parentheses?(node) return if allowed_camel_case_method_call?(node) return if allowed_string_interpolation_method_call?(node) add_offense(offense_range(node), message: OMIT_MSG) do |corrector| autocorrect(corrector, node) end end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 90 def parentheses_at_the_end_of_multiline_call?(node) node.multiline? && node.loc.begin.source_line .gsub(TRAILING_WHITESPACE_REGEX, '') .end_with?('(') end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 220 def regexp_slash_literal?(node) node.regexp_type? && node.loc.begin.source == '/' end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 55 def require_parentheses_for_hash_value_omission?(node) # rubocop:disable Metrics/PerceivedComplexity return false unless (last_argument = node.last_argument) return false if !last_argument.hash_type? || !last_argument.pairs.last&.value_omission? node.parent&.conditional? || node.parent&.single_line? || !last_expression?(node) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 204 def splat?(node) node.type?(:splat, :kwsplat, :block_pass) end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 76 def super_call_without_arguments?(node) node.super_type? && node.arguments.none? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 68 def syntax_like_method_call?(node) node.implicit_call? || node.operator_method? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 208 def ternary_if?(node) node.if_type? && node.ternary? end
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# File lib/rubocop/cop/style/method_call_with_args_parentheses/omit_parentheses.rb, line 224 def unary_literal?(node) # NOTE: should be removed after releasing https://github.com/rubocop/rubocop-ast/pull/379 return node.source.match?(/\A[+-]/) if node.complex_type? (node.numeric_type? && node.sign?) || (node.parent&.send_type? && node.parent.unary_operation?) end