Module: RuboCop::AST::MethodDispatchNode

Extended by:
NodePattern::Macros
Includes:
MethodIdentifierPredicates
Included in:
BreakNode, DefinedNode, RetryNode, SendNode, SuperNode, YieldNode
Defined in:
lib/rubocop/ast/node/mixin/method_dispatch_node.rb

Overview

Common functionality for nodes that are a kind of method dispatch: `send`, `csend`, `super`, `zsuper`, `yield`, `defined?`

Constant Summary collapse

ARITHMETIC_OPERATORS =
%i[+ - * / % **].freeze
SPECIAL_MODIFIERS =
%w[private protected].freeze

Constants included from MethodIdentifierPredicates

RuboCop::AST::MethodIdentifierPredicates::ENUMERATOR_METHODS, RuboCop::AST::MethodIdentifierPredicates::OPERATOR_METHODS

Instance Method Summary collapse

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 MethodIdentifierPredicates

#assignment_method?, #bang_method?, #camel_case_method?, #comparison_method?, #enumerator_method?, #method?, #negation_method?, #operator_method?, #predicate_method?, #prefix_bang?, #prefix_not?

Instance Method Details

#access_modifier?Boolean

Checks whether the dispatched method is an access modifier.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 57

def access_modifier?
  bare_access_modifier? || non_bare_access_modifier?
end

#argumentsArray<Node>

An array containing the arguments of the dispatched method.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 31

def arguments
  node_parts[2..-1]
end

#arithmetic_operation?Boolean

Checks whether this node is an arithmetic operation


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 160

def arithmetic_operation?
  ARITHMETIC_OPERATORS.include?(method_name)
end

#bare_access_modifier?Boolean

Checks whether the dispatched method is a bare access modifier that affects all methods defined after the macro.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 66

def bare_access_modifier?
  macro? && bare_access_modifier_declaration?
end

#binary_operation?Bookean

Checks whether this is a binary operation.

Examples:


foo + bar

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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 215

def binary_operation?
  return false unless loc.selector

  operator_method? && loc.expression.begin_pos != loc.selector.begin_pos
end

#block_literal?Boolean

Whether this method dispatch has an explicit block.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 152

def block_literal?
  parent&.block_type? && eql?(parent.send_node)
end

#block_nodeBlockNode?

The `block` node associated with this method dispatch, if any.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 39

def block_node
  parent if block_literal?
end

#command?(name) ⇒ Boolean

Checks whether the name of the dispatched method matches the argument and has an implicit receiver.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 93

def command?(name)
  !receiver && method?(name)
end

#const_receiver?Boolean

Checks whether the explicit receiver of this method dispatch is a `const` node.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 137

def const_receiver?
  receiver&.const_type?
end

#def_modifier?Boolean

Checks if this node is part of a chain of `def` modifiers.

Examples:


private def foo; end

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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 171

def def_modifier?
  send_type? &&
    [self, *each_descendant(:send)].any?(&:adjacent_def_modifier?)
end

#dot?Boolean

Checks whether the dispatched method uses a dot to connect the receiver and the method name.

This is useful for comparison operators, which can be called either with or without a dot, i.e. `foo == bar` or `foo.== bar`.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 112

def dot?
  loc.respond_to?(:dot) && loc.dot && loc.dot.is?('.')
end

#double_colon?Boolean

Checks whether the dispatched method uses a double colon to connect the receiver and the method name.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 120

def double_colon?
  loc.respond_to?(:dot) && loc.dot && loc.dot.is?('::')
end

#implicit_call?Boolean

Checks whether the method dispatch is the implicit form of `#call`, e.g. `foo.(bar)`.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 145

def implicit_call?
  method?(:call) && !loc.selector
end

#lambda?Boolean

Checks whether this is a lambda. Some versions of parser parses non-literal lambdas as a method send.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 180

def lambda?
  block_literal? && command?(:lambda)
end

#lambda_literal?Boolean

Checks whether this is a lambda literal (stabby lambda.)

Examples:


-> (foo) { bar }

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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 191

def lambda_literal?
  block_literal? && loc.expression && loc.expression.source == '->'
end

#macro?Boolean

Note:

This does not include DSLs that use nested blocks, like RSpec

Checks whether the dispatched method is a macro method. A macro method is defined as a method that sits in a class, module, or block body and has an implicit receiver.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 50

def macro?
  !receiver && macro_scope?
end

#method_nameSymbol

The name of the dispatched method as a symbol.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 24

def method_name
  node_parts[1]
end

#non_bare_access_modifier?Boolean

Checks whether the dispatched method is a non-bare access modifier that affects only the method it receives.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 75

def non_bare_access_modifier?
  macro? && non_bare_access_modifier_declaration?
end

#receiverNode?

The receiving node of the method dispatch.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 17

def receiver
  node_parts[0]
end

#self_receiver?Boolean

Checks whether the explicit receiver of this method dispatch is `self`.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 128

def self_receiver?
  receiver&.self_type?
end

#setter_method?Boolean Also known as: assignment?

Checks whether the dispatched method is a setter method.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 100

def setter_method?
  loc.respond_to?(:operator) && loc.operator
end

#special_modifier?Boolean

Checks whether the dispatched method is a bare `private` or `protected` access modifier that affects all methods defined after the macro.


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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 84

def special_modifier?
  bare_access_modifier? && SPECIAL_MODIFIERS.include?(source)
end

#unary_operation?Boolean

Checks whether this is a unary operation.

Examples:


-foo

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# File 'lib/rubocop/ast/node/mixin/method_dispatch_node.rb', line 202

def unary_operation?
  return false unless loc.selector

  operator_method? && loc.expression.begin_pos == loc.selector.begin_pos
end