Class: RuboCop::AST::WhenNode

Inherits:
Node
  • Object
show all
Defined in:
lib/rubocop/ast/node/when_node.rb

Overview

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

Constant Summary

Constants inherited from Node

Node::BASIC_LITERALS, Node::COMPARISON_OPERATORS, Node::COMPOSITE_LITERALS, Node::FALSEY_LITERALS, Node::IMMUTABLE_LITERALS, Node::KEYWORDS, Node::LITERALS, Node::MUTABLE_LITERALS, Node::OPERATOR_KEYWORDS, Node::REFERENCES, Node::SPECIAL_KEYWORDS, Node::TRUTHY_LITERALS, Node::VARIABLES

Instance Method Summary collapse

Methods inherited from Node

#ancestors, #argument?, #asgn_method_call?, #basic_literal?, #binary_operation?, #chained?, #child_nodes, #complete!, #complete?, #const_name, def_matcher, #defined_module, #defined_module_name, #descendants, #each_ancestor, #each_child_node, #each_descendant, #each_node, #falsey_literal?, #immutable_literal?, #initialize, #keyword?, #keyword_bang?, #keyword_not?, #literal?, #multiline?, #mutable_literal?, #numeric_type?, #parent, #parent_module_name, #pure?, #receiver, #reference?, #sibling_index, #single_line?, #source, #source_range, #special_keyword?, #truthy_literal?, #unary_operation?, #updated, #value_used?, #variable?

Methods included from Sexp

#s

Constructor Details

This class inherits a constructor from RuboCop::AST::Node

Instance Method Details

#body ⇒ Node

Returns the body of the ‘when` node.

Returns:

  • (Node) —

    the body of the ‘when` node



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# File 'lib/rubocop/ast/node/when_node.rb', line 48

def body
  node_parts[-1]
end

#branch_index ⇒ Integer

Returns the index of the ‘when` branch within the `case` statement.

Returns:

  • (Integer) —

    the index of the ‘when` branch



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# File 'lib/rubocop/ast/node/when_node.rb', line 34

def branch_index
  parent.when_branches.index(self)
end

#conditions ⇒ Array<Node>

Returns an array of all the conditions in the ‘when` branch.

Returns:

  • (Array<Node>) —

    an array of condition nodes



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# File 'lib/rubocop/ast/node/when_node.rb', line 12

def conditions
  node_parts[0...-1]
end

#each_condition ⇒ self, Enumerator

Calls the given block for each condition node in the ‘when` branch. If no block is given, an `Enumerator` is returned.

Returns:

  • (self) —

    if a block is given

  • (Enumerator) —

    if no block is given



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# File 'lib/rubocop/ast/node/when_node.rb', line 21

def each_condition
  return conditions.to_enum(__method__) unless block_given?

  conditions.each do |condition|
    yield condition
  end

  self
end

#node_parts ⇒ Array<Node>

Custom destructuring method. This can be used to normalize destructuring for different variations of the node.

Returns:

  • (Array<Node>) —

    the different parts of the ‘until` statement



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# File 'lib/rubocop/ast/node/when_node.rb', line 56

def node_parts
  [*self]
end

#then? ⇒ Boolean

Checks whether the ‘when` node has a `then` keyword.

Returns:

  • (Boolean) —

    whether the ‘when` node has a `then` keyword



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# File 'lib/rubocop/ast/node/when_node.rb', line 41

def then?
  loc.begin && loc.begin.is?('then')
end