class RuboCop::Cop::Layout::IndentationWidth
This cops checks for indentation that doesn't use the specified number of spaces.
See also the IndentationConsistency
cop which is the companion to this one.
@example
# bad, Width: 2 class A def test puts 'hello' end end # bad, Width: 2, IgnoredPatterns: - '^\s*module' module A class B def test puts 'hello' end end end # good, Width: 2 class A def test puts 'hello' end end # good, Width: 2, IgnoredPatterns: - '^\s*module' module A class B def test puts 'hello' end end end
Constants
- MSG
- SPECIAL_MODIFIERS
Public Instance Methods
on_block(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 77 def on_block(node) end_loc = node.loc.end return unless begins_its_line?(end_loc) check_indentation(end_loc, node.body) return unless indentation_consistency_style == 'rails' check_members(end_loc, [node.body]) end
on_case(case_node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 130 def on_case(case_node) case_node.each_when do |when_node| check_indentation(when_node.loc.keyword, when_node.body) end check_indentation(case_node.when_branches.last.loc.keyword, case_node.else_branch) end
on_class(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 94 def on_class(node) _class_name, _base_class, *members = *node check_members(node.loc.keyword, members) end
on_def(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 113 def on_def(node) return if ignored_node?(node) check_indentation(node.loc.keyword, node.body) end
Also aliased as: on_defs
on_ensure(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 63 def on_ensure(node) check_indentation(node.loc.keyword, node.body) end
Also aliased as: on_resbody, on_for
on_if(node, base = node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 139 def on_if(node, base = node) return if ignored_node?(node) || !node.body return if node.ternary? || node.modifier_form? check_if(node, node.body, node.else_branch, base.loc) end
on_kwbegin(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 70 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_module(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 89 def on_module(node) _module_name, *members = *node check_members(node.loc.keyword, members) end
on_rescue(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 58 def on_rescue(node) _begin_node, *_rescue_nodes, else_node = *node check_indentation(node.loc.else, else_node) end
on_send(node)
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Calls superclass method
RuboCop::Cop::CheckAssignment#on_send
# File lib/rubocop/cop/layout/indentation_width.rb, line 99 def on_send(node) super return unless node.adjacent_def_modifier? *_, body = *node.first_argument def_end_config = config.for_cop('Lint/DefEndAlignment') style = def_end_config['EnforcedStyleAlignWith'] || 'start_of_line' base = style == 'def' ? node.first_argument : node check_indentation(base.source_range, body) ignore_node(node.first_argument) end
on_while(node, base = node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 120 def on_while(node, base = node) return if ignored_node?(node) return unless node.single_line_condition? check_indentation(base.loc, node.body) end
Also aliased as: on_until
Private Instance Methods
check_assignment(node, rhs)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 180 def check_assignment(node, rhs) # If there are method calls chained to the right hand side of the # assignment, we let rhs be the receiver of those method calls before # we check its indentation. rhs = first_part_of_call_chain(rhs) return unless rhs end_config = config.for_cop('Lint/EndAlignment') style = end_config['EnforcedStyleAlignWith'] || 'keyword' base = variable_alignment?(node.loc, rhs, style.to_sym) ? node : rhs case rhs.type when :if then on_if(rhs, base) when :while, :until then on_while(rhs, base) else return end ignore_node(rhs) end
check_if(node, body, else_clause, base_loc)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 200 def check_if(node, body, else_clause, base_loc) return if node.ternary? check_indentation(base_loc, body) return unless else_clause # If the else clause is an elsif, it will get its own on_if call so # we don't need to process it here. return if else_clause.if_type? && else_clause.elsif? check_indentation(node.loc.else, else_clause) end
check_indentation(base_loc, body_node, style = 'normal')
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# File lib/rubocop/cop/layout/indentation_width.rb, line 213 def check_indentation(base_loc, body_node, style = 'normal') return unless indentation_to_check?(base_loc, body_node) indentation = body_node.loc.column - effective_column(base_loc) @column_delta = configured_indentation_width - indentation return if @column_delta.zero? offense(body_node, indentation, style) end
check_members(base, members)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 148 def check_members(base, members) check_indentation(base, members.first) return unless members.any? && members.first.begin_type? return unless indentation_consistency_style == 'rails' each_member(members) do |member, previous_modifier| check_indentation(previous_modifier, member, indentation_consistency_style) end end
configured_indentation_width()
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# File lib/rubocop/cop/layout/indentation_width.rb, line 301 def configured_indentation_width cop_config['Width'] end
each_member(members) { |member, source_range| ... }
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# File lib/rubocop/cop/layout/indentation_width.rb, line 160 def each_member(members) previous_modifier = nil members.first.children.each do |member| if member.send_type? && special_modifier?(member) previous_modifier = member elsif previous_modifier yield member, previous_modifier.source_range previous_modifier = nil end end end
indentation_consistency_style()
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# File lib/rubocop/cop/layout/indentation_width.rb, line 176 def indentation_consistency_style config.for_cop('Layout/IndentationConsistency')['EnforcedStyle'] end
indentation_to_check?(base_loc, body_node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 260 def indentation_to_check?(base_loc, body_node) return false if skip_check?(base_loc, body_node) if %i[rescue ensure].include?(body_node.type) block_body, = *body_node return unless block_body end true end
offending_range(body_node, indentation)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 286 def offending_range(body_node, indentation) expr = body_node.source_range begin_pos = expr.begin_pos ind = expr.begin_pos - indentation pos = indentation >= 0 ? ind..begin_pos : begin_pos..ind range_between(pos.begin, pos.end) end
offense(body_node, indentation, style)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 223 def offense(body_node, indentation, style) # This cop only auto-corrects the first statement in a def body, for # example. if body_node.begin_type? && !parentheses?(body_node) body_node = body_node.children.first end # Since autocorrect changes a number of lines, and not only the line # where the reported offending range is, we avoid auto-correction if # this cop has already found other offenses is the same # range. Otherwise, two corrections can interfere with each other, # resulting in corrupted code. node = if autocorrect? && other_offense_in_same_range?(body_node) nil else body_node end name = style == 'normal' ? '' : " #{style}" msg = format(MSG, configured_indentation_width, indentation, name) add_offense(node, location: offending_range(body_node, indentation), message: msg) end
other_offense_in_same_range?(node)
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Returns true if the given node is within another node that has already been marked for auto-correction by this cop.
# File lib/rubocop/cop/layout/indentation_width.rb, line 250 def other_offense_in_same_range?(node) expr = node.source_range @offense_ranges ||= [] return true if @offense_ranges.any? { |r| within?(expr, r) } @offense_ranges << expr false end
skip_check?(base_loc, body_node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 271 def skip_check?(base_loc, body_node) return true if ignored_line?(base_loc) return true unless body_node # Don't check if expression is on same line as "then" keyword, etc. return true if body_node.loc.line == base_loc.line return true if starts_with_access_modifier?(body_node) # Don't check indentation if the line doesn't start with the body. # For example, lines like "else do_something". first_char_pos_on_line = body_node.source_range.source_line =~ /\S/ return true unless body_node.loc.column == first_char_pos_on_line end
special_modifier?(node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 172 def special_modifier?(node) node.access_modifier? && SPECIAL_MODIFIERS.include?(node.source) end
starts_with_access_modifier?(body_node)
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# File lib/rubocop/cop/layout/indentation_width.rb, line 294 def starts_with_access_modifier?(body_node) return unless body_node.begin_type? starting_node = body_node.children.first starting_node.send_type? && starting_node.access_modifier? end