class RuboCop::Cop::Style::MultilineMemoization
Checks expressions wrapping styles for multiline memoization.
@example EnforcedStyle: keyword (default)
# bad foo ||= ( bar baz ) # good foo ||= begin bar baz end
@example EnforcedStyle: braces
# bad foo ||= begin bar baz end # good foo ||= ( bar baz )
Constants
- BRACES_MSG
- KEYWORD_MSG
Public Instance Methods
message(_node)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 55 def message(_node) style == :braces ? BRACES_MSG : KEYWORD_MSG end
on_or_asgn(node)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 40 def on_or_asgn(node) _lhs, rhs = *node return unless bad_rhs?(rhs) add_offense(node.source_range) do |corrector| if style == :keyword keyword_autocorrect(rhs, corrector) else corrector.replace(rhs.loc.begin, '(') corrector.replace(rhs.loc.end, ')') end end end
Private Instance Methods
bad_rhs?(rhs)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 61 def bad_rhs?(rhs) return false unless rhs.multiline? if style == :keyword rhs.begin_type? else rhs.kwbegin_type? end end
keyword_autocorrect(node, corrector)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 71 def keyword_autocorrect(node, corrector) node_buf = node.source_range.source_buffer corrector.replace(node.loc.begin, keyword_begin_str(node, node_buf)) corrector.replace(node.loc.end, keyword_end_str(node, node_buf)) end
keyword_begin_str(node, node_buf)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 77 def keyword_begin_str(node, node_buf) indent = config.for_cop('Layout/IndentationWidth')['Width'] || 2 if node_buf.source[node.loc.begin.end_pos] == "\n" 'begin' else "begin\n#{' ' * (node.loc.column + indent)}" end end
keyword_end_str(node, node_buf)
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# File lib/rubocop/cop/style/multiline_memoization.rb, line 86 def keyword_end_str(node, node_buf) if /[^\s)]/.match?(node_buf.source_line(node.loc.end.line)) "\n#{' ' * node.loc.column}end" else 'end' end end