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

Inherits:
Cop
  • Object
show all
Includes:
AccessModifierNode, AutocorrectAlignment, CheckAssignment, 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 CheckAssignment

CheckAssignment::TYPES

Constants included from Util

Util::ASGN_NODES, Util::EQUALS_ASGN_NODES, Util::OPERATOR_METHODS, Util::PROC_NEW_NODE, 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_constructor?, #class_or_module_parent?, #modifier_node?, #modifier_structure?

Methods included from IfNode

#elsif?, #if_else?, #modifier_if?, #ternary_op?

Methods included from CheckAssignment

#on_casgn, #on_op_asgn

Methods included from OnMethodDef

#on_def, #on_defs

Methods included from AutocorrectAlignment

#autocorrect, #check_alignment, #start_of_line?

Methods inherited from Cop

#add_offense, all, #autocorrect?, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, cop_name_with_namespace, cop_type, #debug?, #display_cop_names?, inherited, #initialize, #join_force?, lint?, #message, non_rails, qualified_cop_name, rails?, #relevant_file?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, block_length, command?, comment_line?, const_name, first_part_of_call_chain, lambda?, lambda_or_proc?, line_range, numeric_range_size, on_node, operator?, parentheses?, proc?, range_with_surrounding_comma, range_with_surrounding_space, source_range, strip_quotes, within_node?

Methods included from PathUtil

issue_deprecation_warning, match_path?, relative_path

Constructor Details

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

Instance Method Details

#on_block(node) ⇒ Object



43
44
45
46
47
48
49
50
# File 'lib/rubocop/cop/style/indentation_width.rb', line 43

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



92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
# File 'lib/rubocop/cop/style/indentation_width.rb', line 92

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



57
58
59
60
# File 'lib/rubocop/cop/style/indentation_width.rb', line 57

def on_class(node)
  _class_name, _base_class, *members = *node
  members.each { |m| check_indentation(node.loc.keyword, m) }
end

#on_ensure(node) ⇒ Object



31
32
33
34
# File 'lib/rubocop/cop/style/indentation_width.rb', line 31

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

#on_for(node) ⇒ Object



77
78
79
80
# File 'lib/rubocop/cop/style/indentation_width.rb', line 77

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

#on_if(node, base = node) ⇒ Object



125
126
127
128
129
130
131
132
133
134
135
136
137
# File 'lib/rubocop/cop/style/indentation_width.rb', line 125

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

  case node.loc.keyword.source
  when 'if', 'elsif' then _condition, body, else_clause = *node
  when 'unless'      then _condition, else_clause, body = *node
  else                    _condition, body = *node
  end

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

#on_kwbegin(node) ⇒ Object



36
37
38
39
40
41
# File 'lib/rubocop/cop/style/indentation_width.rb', line 36

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



73
74
75
# File 'lib/rubocop/cop/style/indentation_width.rb', line 73

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

#on_module(node) ⇒ Object



52
53
54
55
# File 'lib/rubocop/cop/style/indentation_width.rb', line 52

def on_module(node)
  _module_name, *members = *node
  members.each { |m| check_indentation(node.loc.keyword, m) }
end

#on_rescue(node) ⇒ Object



22
23
24
25
26
27
28
29
# File 'lib/rubocop/cop/style/indentation_width.rb', line 22

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



62
63
64
65
66
67
68
69
70
71
# File 'lib/rubocop/cop/style/indentation_width.rb', line 62

def on_send(node)
  super
  receiver, method_name, *args = *node
  return unless visibility_and_def_on_same_line?(receiver, method_name,
                                                 args)

  _method_name, _args, body = *args.first
  check_indentation(node.loc.expression, body)
  ignore_node(args.first)
end

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



82
83
84
85
86
87
88
# File 'lib/rubocop/cop/style/indentation_width.rb', line 82

def on_while(node, base = node)
  _condition, body = *node
  return unless node.loc.keyword.begin_pos ==
                node.loc.expression.begin_pos

  check_indentation(base.loc, body)
end