class RuboCop::Cop::Style::Semicolon
This cop checks for multiple expressions placed on the same line. It also checks for lines terminated with a semicolon.
Constants
- MSG
Public Instance Methods
investigate(processed_source)
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# File lib/rubocop/cop/style/semicolon.rb, line 11 def investigate(processed_source) return unless processed_source.ast @processed_source = processed_source check_for_line_terminator_or_opener end
on_begin(node)
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# File lib/rubocop/cop/style/semicolon.rb, line 18 def on_begin(node) return if cop_config['AllowAsExpressionSeparator'] exprs = node.children return if exprs.size < 2 # create a map matching lines to the number of expressions on them exprs_lines = exprs.map { |e| e.source_range.line } lines = exprs_lines.group_by { |i| i } # every line with more than 1 expression on it is an offense lines.each do |line, expr_on_line| next unless expr_on_line.size > 1 # TODO: Find the correct position of the semicolon. We don't know # if the first semicolon on the line is a separator of # expressions. It's just a guess. column = @processed_source[line - 1].index(';') convention_on(line, column, false) end end
Private Instance Methods
autocorrect(range)
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# File lib/rubocop/cop/style/semicolon.rb, line 63 def autocorrect(range) return unless range ->(corrector) { corrector.remove(range) } end
check_for_line_terminator_or_opener()
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# File lib/rubocop/cop/style/semicolon.rb, line 41 def check_for_line_terminator_or_opener each_semicolon { |line, column| convention_on(line, column, true) } end
convention_on(line, column, autocorrect)
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# File lib/rubocop/cop/style/semicolon.rb, line 56 def convention_on(line, column, autocorrect) range = source_range(@processed_source.buffer, line, column) # Don't attempt to autocorrect if semicolon is separating statements # on the same line add_offense(autocorrect ? range : nil, location: range) end
each_semicolon() { |line, last.column| ... }
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# File lib/rubocop/cop/style/semicolon.rb, line 45 def each_semicolon tokens_for_lines.each do |line, tokens| yield line, tokens.last.pos.column if tokens.last.type == :tSEMI yield line, tokens.first.pos.column if tokens.first.type == :tSEMI end end
tokens_for_lines()
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# File lib/rubocop/cop/style/semicolon.rb, line 52 def tokens_for_lines @processed_source.tokens.group_by { |token| token.pos.line } end