Class: RuboCop::AST::HashNode

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

Overview

A node extension for ‘hash` nodes. This will be used in place of a plain node when the builder constructs the AST, making its methods available to all `hash` 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, #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?, #operator_keyword?, #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 NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first

Methods included from Sexp

#s

Constructor Details

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

Instance Method Details

#braces? ⇒ Boolean

Checks whether the ‘hash` literal is delimited by curly braces.

Returns:

  • (Boolean) —

    whether the ‘hash` literal is enclosed in braces



104
105
106
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 104

def braces?
  loc.end && loc.end.is?('}')
end

#each_key ⇒ self, Enumerator

Calls the given block for each ‘key` node in the `hash` literal. If no block is given, an `Enumerator` is returned.

Returns:

  • (self) —

    if a block is given

  • (Enumerator) —

    if no block is given



50
51
52
53
54
55
56
57
58
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 50

def each_key
  return pairs.map(&:key).to_enum unless block_given?

  pairs.map(&:key).each do |key|
    yield key
  end

  self
end

#each_pair ⇒ self, Enumerator

Calls the given block for each ‘pair` node in the `hash` literal. If no block is given, an `Enumerator` is returned.

Returns:

  • (self) —

    if a block is given

  • (Enumerator) —

    if no block is given



28
29
30
31
32
33
34
35
36
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 28

def each_pair
  return each_child_node(:pair).to_enum unless block_given?

  each_child_node(:pair) do |pair|
    yield(*pair)
  end

  self
end

#each_value ⇒ self, Enumerator

Calls the given block for each ‘value` node in the `hash` literal. If no block is given, an `Enumerator` is returned.

Returns:

  • (self) —

    if a block is given

  • (Enumerator) —

    if no block is given



72
73
74
75
76
77
78
79
80
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 72

def each_value
  return pairs.map(&:value).to_enum unless block_given?

  pairs.map(&:value).each do |value|
    yield value
  end

  self
end

#empty? ⇒ Boolean

Checks whether the ‘hash` node contains any `pair`- or `kwsplat` nodes.

@return whether the ‘hash` is empty

Returns:

  • (Boolean) 


19
20
21
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 19

def empty?
  children.empty?
end

#keys ⇒ Array<Node>

Returns an array of all the keys in the ‘hash` literal.

Returns:

  • (Array<Node>) —

    an array of keys in the ‘hash` literal



41
42
43
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 41

def keys
  each_key.to_a
end

#mixed_delimiters? ⇒ Boolean

Checks whether this ‘hash` uses a mix of hash rocket and colon delimiters for its pairs.

Returns:

  • (Boolean) —

    whether the ‘hash` uses mixed delimiters



97
98
99
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 97

def mixed_delimiters?
  pairs.map(&:delimiter).uniq.size > 1
end

#pairs ⇒ Array<PairNode>

Returns an array of all the key value pairs in the ‘hash` literal.

Returns:

  • (Array<PairNode>) —

    an array of ‘pair` nodes



12
13
14
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 12

def pairs
  each_pair.to_a
end

#pairs_on_same_line? ⇒ Boolean

Note:

A multiline ‘pair` is considered to be on the same line if it shares any of its lines with another `pair`

Checks whether any of the key value pairs in the ‘hash` literal are on the same line.

Returns:

  • (Boolean) —

    whether any ‘pair` nodes are on the same line



89
90
91
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 89

def pairs_on_same_line?
  pairs.each_cons(2).any? { |first, second| first.same_line?(second) }
end

#values ⇒ Array<Node>

Returns an array of all the values in the ‘hash` literal.

Returns:

  • (Array<Node>) —

    an array of values in the ‘hash` literal



63
64
65
 
# File 'lib/rubocop/ast/node/hash_node.rb', line 63

def values
  each_pair.map(&:value)
end