Class: RuboCop::Cop::Layout::BlockAlignment

Inherits:
Cop
  • Object
show all
Includes:
ConfigurableEnforcedStyle, RangeHelp
Defined in:
lib/rubocop/cop/layout/block_alignment.rb

Overview

This cop checks whether the end keywords are aligned properly for do end blocks.

Three modes are supported through the ‘EnforcedStyleAlignWith` configuration parameter:

‘start_of_block` : the `end` shall be aligned with the start of the line where the `do` appeared.

‘start_of_line` : the `end` shall be aligned with the start of the line where the expression started.

‘either` (which is the default) : the `end` is allowed to be in either location. The autofixer will default to `start_of_line`.

Examples:

EnforcedStyleAlignWith: either (default)

# bad

foo.bar
   .each do
     baz
       end

# good

variable = lambda do |i|
  i
end

EnforcedStyleAlignWith: start_of_block

# bad

foo.bar
   .each do
     baz
       end

# good

foo.bar
  .each do
     baz
   end

EnforcedStyleAlignWith: start_of_line

# bad

foo.bar
   .each do
     baz
       end

# good

foo.bar
  .each do
     baz
end

Constant Summary collapse

MSG = 
'%<current>s is not aligned with %<prefer>s%<alt_prefer>s.'.freeze

Constants included from Util

Util::LITERAL_REGEX

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, #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?, #message, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from AST::Sexp

#s

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

Methods included from PathUtil

absolute?, 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(node) ⇒ Object 



87
88
89
90
91
92
93
94
95
96
97
98
 
# File 'lib/rubocop/cop/layout/block_alignment.rb', line 87

def autocorrect(node)
  ancestor_node = start_for_block_node(node)
  start_col = compute_start_col(ancestor_node, node)
  loc_end = node.loc.end
  delta = start_col - loc_end.column

  if delta > 0
    add_space_before(loc_end, delta)
  elsif delta < 0
    remove_space_before(loc_end.begin_pos, -delta)
  end
end

#on_block(node) ⇒ Object 



79
80
81
 
# File 'lib/rubocop/cop/layout/block_alignment.rb', line 79

def on_block(node)
  check_block_alignment(start_for_block_node(node), node)
end

#style_parameter_name ⇒ Object 



83
84
85
 
# File 'lib/rubocop/cop/layout/block_alignment.rb', line 83

def style_parameter_name
  'EnforcedStyleAlignWith'
end