class JMESPath::Nodes::ChainedField

Attributes

keys[R]

Public Class Methods

new(keys) click to toggle source
# File lib/jmespath/nodes/field.rb, line 42
def initialize(keys)
  @keys = keys
  @key_syms = keys.each_with_object({}) do |k, syms|
    syms[k] = k.to_sym if k.respond_to?(:to_sym)
  end
end

Public Instance Methods

chain(other) click to toggle source
# File lib/jmespath/nodes/field.rb, line 66
def chain(other)
  ChainedField.new([*@keys, *other.keys])
end
visit(obj) click to toggle source
# File lib/jmespath/nodes/field.rb, line 49
def visit(obj)
  @keys.reduce(obj) do |value, key|
    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 (sym = @key_syms[key]) && !(v = value[sym]).nil?
        v
      end
    elsif value.is_a?(Struct) && value.respond_to?(key)
      value[key]
    end
  end
end