Class: RuboCop::Cop::Style::IndentationWidth

Inherits:
Cop
  • Object
show all
Includes:
AccessModifierNode, AutocorrectAlignment, CheckAssignment, EndKeywordAlignment, IfNode, OnMethodDef
Defined in:
lib/rubocop/cop/style/indentation_width.rb

Overview

This cops checks for indentation that doesn't use two spaces.

Examples:


class A
 def test
  puts 'hello'
 end
end

Constant Summary

Constants included from AccessModifierNode

AccessModifierNode::MODULE_FUNCTION_NODE, AccessModifierNode::PRIVATE_NODE, AccessModifierNode::PROTECTED_NODE, AccessModifierNode::PUBLIC_NODE

Constants included from AutocorrectAlignment

AutocorrectAlignment::SPACE

Constants included from EndKeywordAlignment

EndKeywordAlignment::MSG

Constants included from Util

Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods included from AccessModifierNode

#class_or_module_parent?, #modifier_node?, #modifier_structure?

Methods included from Sexp

#s

Methods included from IfNode

#elsif?, #if_else?, #if_node_parts, #modifier_if?, #ternary?

Methods included from CheckAssignment

extract_rhs

Methods included from OnMethodDef

#on_def, #on_defs

Methods included from AutocorrectAlignment

#autocorrect, #check_alignment, #display_column, #indentation, #offset

Methods included from ConfigurableEnforcedStyle

#alternative_style, #ambiguous_style_detected, #correct_style_detected, #detected_style, #detected_style=, #no_acceptable_style!, #no_acceptable_style?, #opposite_style_detected, #parameter_name, #style, #style_detected, #supported_styles, #unexpected_style_detected

Methods inherited from Cop

#add_offense, all, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, cop_type, #correct, #debug?, #details, #display_cop_names?, #display_style_guide?, #excluded_file?, #extra_details?, #highlights, inherited, #initialize, #join_force?, lint?, match?, #message, #messages, non_rails, #parse, qualified_cop_name, #reference_url, #relevant_file?, #style_guide_url, #target_ruby_version

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search_body

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?, block_length, comment_line?, directions, double_quotes_acceptable?, double_quotes_required?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, move_pos, needs_escaping?, numeric_range_size, on_node, operator?, parentheses?, parenthesized_call?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, to_string_literal, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, match_path?, relative_path

Constructor Details

This class inherits a constructor from RuboCop::Cop::Cop

Instance Method Details

#check_members(node, members) ⇒ Object


64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
# File 'lib/rubocop/cop/style/indentation_width.rb', line 64

def check_members(node, members)
  check_indentation(node.loc.keyword, members.first)

  return unless members.any? && members.first.begin_type?
  style =
    config.for_cop('Style/IndentationConsistency')['EnforcedStyle']
  return unless style == 'rails'

  special = %w(protected private) # Extra indentation step after these.
  previous_modifier = nil
  members.first.children.each do |m|
    if modifier_node?(m) && special.include?(m.source)
      previous_modifier = m
    elsif previous_modifier
      check_indentation(previous_modifier.source_range, m, style)
      previous_modifier = nil
    end
  end
end

#on_block(node) ⇒ Object


45
46
47
48
49
50
51
52
# File 'lib/rubocop/cop/style/indentation_width.rb', line 45

def on_block(node)
  _method, _args, body = *node
  # Check body against end/} indentation. Checking against variable
  # assignments, etc, would be more difficult. The end/} must be at the
  # beginning of its line.
  loc = node.loc
  check_indentation(loc.end, body) if begins_its_line?(loc.end)
end

#on_case(node) ⇒ Object


120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
# File 'lib/rubocop/cop/style/indentation_width.rb', line 120

def on_case(node)
  _condition, *branches = *node
  latest_when = nil
  branches.compact.each do |b|
    if b.type == :when
      # TODO: Revert to the original expression once the fix in Rubinius
      #   is released.
      #
      # Originally this expression was:
      #
      #   *_conditions, body = *b
      #
      # However it fails on Rubinius 2.2.9 due to its bug:
      #
      #   RuntimeError:
      #     can't modify frozen instance of Array
      #   # kernel/common/array.rb:988:in `pop'
      #   # ./lib/rubocop/cop/style/indentation_width.rb:99:in `on_case'
      #
      # It seems to be fixed on the current master (0a92c3c).
      body = b.children.last

      # Check "when" body against "when" keyword indentation.
      check_indentation(b.loc.keyword, body)
      latest_when = b
    else
      # Since it's not easy to get the position of the "else" keyword,
      # we check "else" body against latest "when" keyword indentation.
      check_indentation(latest_when.loc.keyword, b)
    end
  end
end

#on_class(node) ⇒ Object


59
60
61
62
# File 'lib/rubocop/cop/style/indentation_width.rb', line 59

def on_class(node)
  _class_name, _base_class, *members = *node
  check_members(node, members)
end

#on_ensure(node) ⇒ Object


33
34
35
36
# File 'lib/rubocop/cop/style/indentation_width.rb', line 33

def on_ensure(node)
  _body, ensure_body = *node
  check_indentation(node.loc.keyword, ensure_body)
end

#on_for(node) ⇒ Object


103
104
105
106
# File 'lib/rubocop/cop/style/indentation_width.rb', line 103

def on_for(node)
  _variable, _collection, body = *node
  check_indentation(node.loc.keyword, body)
end

#on_if(node, base = node) ⇒ Object


153
154
155
156
157
158
159
160
161
# File 'lib/rubocop/cop/style/indentation_width.rb', line 153

def on_if(node, base = node)
  return if ignored_node?(node)
  return if ternary?(node)
  return if modifier_if?(node)

  _condition, body, else_clause = if_node_parts(node)

  check_if(node, body, else_clause, base.loc) if body
end

#on_kwbegin(node) ⇒ Object


38
39
40
41
42
43
# File 'lib/rubocop/cop/style/indentation_width.rb', line 38

def on_kwbegin(node)
  # Check indentation against end keyword but only if it's first on its
  # line.
  return unless begins_its_line?(node.loc.end)
  check_indentation(node.loc.end, node.children.first)
end

#on_method_def(node, _method_name, _args, body) ⇒ Object


99
100
101
# File 'lib/rubocop/cop/style/indentation_width.rb', line 99

def on_method_def(node, _method_name, _args, body)
  check_indentation(node.loc.keyword, body) unless ignored_node?(node)
end

#on_module(node) ⇒ Object


54
55
56
57
# File 'lib/rubocop/cop/style/indentation_width.rb', line 54

def on_module(node)
  _module_name, *members = *node
  check_members(node, members)
end

#on_rescue(node) ⇒ Object


24
25
26
27
28
29
30
31
# File 'lib/rubocop/cop/style/indentation_width.rb', line 24

def on_rescue(node)
  _begin_node, *rescue_nodes, else_node = *node
  rescue_nodes.each do |rescue_node|
    _, _, body = *rescue_node
    check_indentation(rescue_node.loc.keyword, body)
  end
  check_indentation(node.loc.else, else_node)
end

#on_send(node) ⇒ Object


84
85
86
87
88
89
90
91
92
93
94
95
96
97
# File 'lib/rubocop/cop/style/indentation_width.rb', line 84

def on_send(node)
  super
  return unless modifier_and_def_on_same_line?(node)
  _, _, *args = *node

  *_, body = *args.first

  def_end_config = config.for_cop('Lint/DefEndAlignment')
  style = def_end_config['AlignWith'] || 'start_of_line'
  base = style == 'def' ? args.first : node

  check_indentation(base.source_range, body)
  ignore_node(args.first)
end

#on_while(node, base = node) ⇒ Object Also known as: on_until


108
109
110
111
112
113
114
115
116
# File 'lib/rubocop/cop/style/indentation_width.rb', line 108

def on_while(node, base = node)
  return if ignored_node?(node)

  _condition, body = *node
  return unless node.loc.keyword.begin_pos ==
                node.source_range.begin_pos

  check_indentation(base.loc, body)
end