Class: RuboCop::Cop::Layout::TrailingBlankLines
- Includes:
- ConfigurableEnforcedStyle, RangeHelp
- Defined in:
- lib/rubocop/cop/layout/trailing_blank_lines.rb
Overview
This cop looks for trailing blank lines and a final newline in the source code.
Constant Summary
Constants included from Util
Instance Attribute Summary
Attributes inherited from Cop
#config, #corrections, #offenses, #processed_source
Instance Method Summary collapse
Methods included from ConfigurableEnforcedStyle
#alternative_style, #alternative_styles, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #style, #style_detected, #style_parameter_name, #supported_styles, #unexpected_style_detected
Methods inherited from Cop
#add_offense, all, autocorrect_incompatible_with, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version
Methods included from AST::Sexp
Methods included from NodePattern::Macros
#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first
Methods included from AutocorrectLogic
#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?
Methods included from IgnoredNode
#ignore_node, #ignored_node?, #part_of_ignored_node?
Methods included from Util
begins_its_line?, comment_line?, double_quotes_required?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, parentheses?, same_line?, to_string_literal, to_supported_styles, tokens, trim_string_interporation_escape_character
Methods included from PathUtil
absolute?, chdir, hidden_dir?, hidden_file_in_not_hidden_dir?, match_path?, pwd, relative_path, reset_pwd, smart_path
Constructor Details
This class inherits a constructor from RuboCop::Cop::Cop
Instance Method Details
#autocorrect(range) ⇒ Object
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# File 'lib/rubocop/cop/layout/trailing_blank_lines.rb', line 64 def autocorrect(range) lambda do |corrector| corrector.replace(range, style == :final_newline ? "\n" : "\n\n") end end |
#investigate(processed_source) ⇒ Object
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# File 'lib/rubocop/cop/layout/trailing_blank_lines.rb', line 44 def investigate(processed_source) buffer = processed_source.buffer return if buffer.source.empty? # The extra text that comes after the last token could be __END__ # followed by some data to read. If so, we don't check it because # there could be good reasons why it needs to end with a certain # number of newlines. return if ends_in_end?(processed_source) whitespace_at_end = buffer.source[/\s*\Z/] blank_lines = whitespace_at_end.count("\n") - 1 wanted_blank_lines = style == :final_newline ? 0 : 1 return unless blank_lines != wanted_blank_lines offense_detected(buffer, wanted_blank_lines, blank_lines, whitespace_at_end) end |