class RuboCop::Cop::Layout::SpaceInsideParens
Checks for spaces inside ordinary round parentheses.
@example EnforcedStyle: no_space (default)
# The `no_space` style enforces that parentheses do not have spaces. # bad f( 3) g = (a + 3 ) # good f(3) g = (a + 3)
@example EnforcedStyle: space
# The `space` style enforces that parentheses have a space at the # beginning and end. # Note: Empty parentheses should not have spaces. # bad f(3) g = (a + 3) y( ) # good f( 3 ) g = ( a + 3 ) y()
Constants
- MSG
- MSG_SPACE
Public Instance Methods
autocorrect(range)
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 56 def autocorrect(range) lambda do |corrector| if style == :space corrector.insert_before(range, ' ') else corrector.remove(range) end end end
investigate(processed_source)
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 42 def investigate(processed_source) @processed_source = processed_source if style == :space each_missing_space(processed_source.tokens) do |range| add_offense(range, location: range, message: MSG_SPACE) end else each_extraneous_space(processed_source.tokens) do |range| add_offense(range, location: range) end end end
Private Instance Methods
can_be_ignored?(token1, token2)
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 100 def can_be_ignored?(token1, token2) return true unless parens?(token1, token2) # If the second token is a comment, that means that a line break # follows, and that the rules for space inside don't apply. return true if token2.comment? # Ignore empty parens. # TODO: Could be configurable. return true if token1.left_parens? && token2.right_parens? end
each_extraneous_space(tokens) { |range_between(end_pos, begin_pos)| ... }
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 68 def each_extraneous_space(tokens) tokens.each_cons(2) do |token1, token2| next unless parens?(token1, token2) # If the second token is a comment, that means that a line break # follows, and that the rules for space inside don't apply. next if token2.comment? next unless token2.line == token1.line && token1.space_after? yield range_between(token1.end_pos, token2.begin_pos) end end
each_missing_space(tokens) { |range_between(begin_pos, begin_pos + 1)| ... }
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 81 def each_missing_space(tokens) tokens.each_cons(2) do |token1, token2| next if can_be_ignored?(token1, token2) next unless token2.line == token1.line && !token1.space_after? if token1.left_parens? yield range_between(token2.begin_pos, token2.begin_pos + 1) elsif token2.right_parens? yield range_between(token2.begin_pos, token2.end_pos) end end end
parens?(token1, token2)
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# File lib/rubocop/cop/layout/space_inside_parens.rb, line 96 def parens?(token1, token2) token1.left_parens? || token2.right_parens? end