class RuboCop::Cop::Layout::SpaceInLambdaLiteral
This cop checks for spaces between `->` and opening parameter parenthesis (`(`) 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
- MSG_REQUIRE_NO_SPACE
- MSG_REQUIRE_SPACE
Public Instance Methods
autocorrect(lambda_node)
click to toggle source
# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 45 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)
click to toggle source
# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 31 def on_send(node) return unless arrow_lambda_with_args?(node) if style == :require_space && !space_after_arrow?(node) add_offense(node, location: range_of_offense(node), message: MSG_REQUIRE_SPACE) elsif style == :require_no_space && space_after_arrow?(node) add_offense(node, location: range_of_offense(node), message: MSG_REQUIRE_NO_SPACE) end end
Private Instance Methods
arrow_lambda_with_args?(node)
click to toggle source
# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 60 def arrow_lambda_with_args?(node) node.lambda_literal? && node.parent.arguments? end
range_of_offense(node)
click to toggle source
# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 71 def range_of_offense(node) range_between( node.parent.loc.expression.begin_pos, node.parent.arguments.loc.expression.end_pos ) end
space_after_arrow?(lambda_node)
click to toggle source
# File lib/rubocop/cop/layout/space_in_lambda_literal.rb, line 64 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) .positive? end