Class: JMESPath::Nodes::Field Private

Inherits:
Node
  • Object
show all
Defined in:
lib/jmespath/nodes/field.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

API:

  • private

Direct Known Subclasses

ChainedField

Instance Method Summary collapse

Methods inherited from Node

#optimize

Constructor Details

#initialize(key) ⇒ Field

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Field.

API:

  • private



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# File 'lib/jmespath/nodes/field.rb', line 6

def initialize(key)
  @key = key
  @key_sym = key.respond_to?(:to_sym) ? key.to_sym : nil
end

Instance Method Details

#chain(other) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/jmespath/nodes/field.rb', line 30

def chain(other)
  ChainedField.new([@key, *other.keys])
end

#chains_with?(other) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

API:

  • private



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# File 'lib/jmespath/nodes/field.rb', line 26

def chains_with?(other)
  other.is_a?(Field)
end

#visit(value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

API:

  • private



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# File 'lib/jmespath/nodes/field.rb', line 11

def visit(value)
  if value.respond_to?(:to_ary) && @key.is_a?(Integer)
    value.to_ary[@key]
  elsif value.respond_to?(:to_hash)
    value = value.to_hash
    if !(v = value[@key]).nil?
      v
    elsif @key_sym && !(v = value[@key_sym]).nil?
      v
    end
  elsif value.is_a?(Struct) && value.respond_to?(@key)
    value[@key]
  end
end