class RuboCop::Cop::Layout::SpaceInLambdaLiteral
This cop checks for spaces between -> and opening parameter brace in lambda literals.
@example
EnforcedStyle: require_no_space (default) @bad a = -> (x, y) { x + y } @good a = ->(x, y) { x + y }
@example
EnforcedStyle: require_space @bad a = ->(x, y) { x + y } @good a = -> (x, y) { x + y }
Constants
- ARROW
- MSG_REQUIRE_NO_SPACE
- MSG_REQUIRE_SPACE
Public Instance Methods
autocorrect(lambda_node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 50 def autocorrect(lambda_node) children = lambda_node.parent.children lambda do |corrector| if style == :require_space corrector.insert_before(children[1].source_range, ' ') else space_range = range_between(children[0].source_range.end_pos, children[1].source_range.begin_pos) corrector.remove(space_range) end end end
on_send(node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 37 def on_send(node) return unless arrow_lambda_with_args?(node) if style == :require_space && !space_after_arrow?(node) add_offense(node, location: node.parent.loc.expression, message: MSG_REQUIRE_SPACE) elsif style == :require_no_space && space_after_arrow?(node) add_offense(node, location: node.parent.loc.expression, message: MSG_REQUIRE_NO_SPACE) end end
Private Instance Methods
args?(lambda_node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 78 def args?(lambda_node) _call, args, _body = *lambda_node.parent !args.children.empty? end
arrow_form?(lambda_node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 74 def arrow_form?(lambda_node) lambda_node.loc.selector.source == ARROW end
arrow_lambda_with_args?(node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 65 def arrow_lambda_with_args?(node) lambda_node?(node) && arrow_form?(node) && args?(node) end
lambda_node?(node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 69 def lambda_node?(node) receiver, call = *node receiver.nil? && call == :lambda end
space_after_arrow?(lambda_node)
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# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 83 def space_after_arrow?(lambda_node) arrow = lambda_node.parent.children[0] parentheses = lambda_node.parent.children[1] parentheses.source_range.begin_pos - arrow.source_range.end_pos > 0 end