class RuboCop::AST::CaseMatchNode

A node extension for `case_match` nodes. This will be used in place of a plain node when the builder constructs the AST, making its methods available to all `case_match` nodes within RuboCop.

Public Instance Methods

branches() click to toggle source

Returns an array of all the when branches in the `case` statement.

@return [Array<Node, nil>] an array of the bodies of the `in` branches and the `else` (if any). Note that these bodies could be nil.

# File lib/rubocop/ast/node/case_match_node.rb, line 38
def branches
  bodies = in_pattern_branches.map(&:body)
  if else?
    # `empty-else` node sets nil because it has no body.
    else_branch.empty_else_type? ? bodies.push(nil) : bodies.push(else_branch)
  end
  bodies
end
each_in_pattern(&block) click to toggle source

@deprecated Use `in_pattern_branches.each`

# File lib/rubocop/ast/node/case_match_node.rb, line 19
def each_in_pattern(&block)
  return in_pattern_branches.to_enum(__method__) unless block

  in_pattern_branches.each(&block)

  self
end
else?() click to toggle source

Checks whether this case statement has an `else` branch.

@return [Boolean] whether the `case` statement has an `else` branch

# File lib/rubocop/ast/node/case_match_node.rb, line 59
def else?
  !loc.else.nil?
end
else_branch() click to toggle source

Returns the else branch of the `case` statement, if any.

@return [Node] the else branch node of the `case` statement @return [EmptyElse] the empty else branch node of the `case` statement @return [nil] if the case statement does not have an else branch.

# File lib/rubocop/ast/node/case_match_node.rb, line 52
def else_branch
  node_parts[-1]
end
in_pattern_branches() click to toggle source

Returns an array of all the `in` pattern branches in the `case` statement.

@return [Array<InPatternNode>] an array of `in_pattern` nodes

# File lib/rubocop/ast/node/case_match_node.rb, line 30
def in_pattern_branches
  node_parts[1...-1]
end
keyword() click to toggle source

Returns the keyword of the `case` statement as a string.

@return [String] the keyword of the `case` statement

# File lib/rubocop/ast/node/case_match_node.rb, line 14
def keyword
  'case'
end