Class: GraphQL::Language::Visitor::NodeVisitor

Inherits:

Object

• Object
• GraphQL::Language::Visitor::NodeVisitor

Defined in:

lib/graphql/language/visitor.rb

Overview

Collect enter and leave hooks for classes in Nodes

Access NodeVisitors via #[]

Instance Attribute Summary

• #enter ⇒ Array<Proc> readonly

  Hooks to call when entering a node of this type.

• #leave ⇒ Array<Proc> readonly

  Hooks to call when leaving a node of this type.

Instance Method Summary

• #<<(hook) ⇒ Object

  Shorthand to add a hook to the #enter array.

• #initialize ⇒ NodeVisitor constructor

  A new instance of NodeVisitor.

Constructor Details

#initialize ⇒ NodeVisitor

Returns a new instance of NodeVisitor

# File 'lib/graphql/language/visitor.rb', line 226

def initialize
  @enter = []
  @leave = []
end

Instance Attribute Details

#enter ⇒ Array<Proc> (readonly)

Returns Hooks to call when entering a node of this type

Returns:

• (Array<Proc>) —

  Hooks to call when entering a node of this type

# File 'lib/graphql/language/visitor.rb', line 222

def enter
  @enter
end

#leave ⇒ Array<Proc> (readonly)

Returns Hooks to call when leaving a node of this type

Returns:

• (Array<Proc>) —

  Hooks to call when leaving a node of this type

# File 'lib/graphql/language/visitor.rb', line 224

def leave
  @leave
end

Instance Method Details

#<<(hook) ⇒ Object

Shorthand to add a hook to the #enter array

Parameters:

• hook (Proc) —

  A hook to add

# File 'lib/graphql/language/visitor.rb', line 233

def <<(hook)
  enter << hook
end