Class: Faraday::Options

Inherits:
Struct
  • Object
show all
Defined in:
lib/faraday/options.rb

Overview

Subclasses Struct with some special helpers for converting from a Hash to a Struct.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.attribute_options ⇒ Object

Internal



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# File 'lib/faraday/options.rb', line 148

def self.attribute_options
  @attribute_options ||= {}
end

.fetch_error_class ⇒ Object 



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# File 'lib/faraday/options.rb', line 182

def self.fetch_error_class
  @fetch_error_class ||= if Object.const_defined?(:KeyError)
    ::KeyError
  else
    ::IndexError
  end
end

.from(value) ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 6

def self.from(value)
  value ? new.update(value) : new
end

.inherited(subclass) ⇒ Object 



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# File 'lib/faraday/options.rb', line 176

def self.inherited(subclass)
  super
  subclass.attribute_options.update(attribute_options)
  subclass.memoized_attributes.update(memoized_attributes)
end

.memoized(key) ⇒ Object 



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# File 'lib/faraday/options.rb', line 152

def self.memoized(key)
  memoized_attributes[key.to_sym] = Proc.new
  class_eval <<-RUBY, __FILE__, __LINE__ + 1
    def #{key}() self[:#{key}]; end
  RUBY
end

.memoized_attributes ⇒ Object 



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# File 'lib/faraday/options.rb', line 159

def self.memoized_attributes
  @memoized_attributes ||= {}
end

.options(mapping) ⇒ Object

Internal



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# File 'lib/faraday/options.rb', line 138

def self.options(mapping)
  attribute_options.update(mapping)
end

.options_for(key) ⇒ Object

Internal



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# File 'lib/faraday/options.rb', line 143

def self.options_for(key)
  attribute_options[key]
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/faraday/options.rb', line 163

def [](key)
  key = key.to_sym
  if method = self.class.memoized_attributes[key]
    super(key) || (self[key] = instance_eval(&method))
  else
    super
  end
end

#clear ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 46

def clear
  members.each { |member| delete(member) }
end

#delete(key) ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 39

def delete(key)
  value = send(key)
  send("#{key}=", nil)
  value
end

#each ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 11

def each
  return to_enum(:each) unless block_given?
  members.each do |key|
    yield(key.to_sym, send(key))
  end
end

#each_key ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 86

def each_key
  return to_enum(:each_key) unless block_given?
  keys.each do |key|
    yield(key)
  end
end

#each_value ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 101

def each_value
  return to_enum(:each_value) unless block_given?
  values.each do |value|
    yield(value)
  end
end

#empty? ⇒ Boolean

Public

Returns:

  • (Boolean) 


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# File 'lib/faraday/options.rb', line 81

def empty?
  keys.empty?
end

#fetch(key, *args) ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 56

def fetch(key, *args)
  unless symbolized_key_set.include?(key.to_sym)
    key_setter = "#{key}="
    if args.size > 0
      send(key_setter, args.first)
    elsif block_given?
      send(key_setter, Proc.new.call(key))
    else
      raise self.class.fetch_error_class, "key not found: #{key.inspect}"
    end
  end
  send(key)
end

#inspect ⇒ Object

Internal



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# File 'lib/faraday/options.rb', line 126

def inspect
  values = []
  members.each do |member|
    value = send(member)
    values << "#{member}=#{value.inspect}" if value
  end
  values = values.empty? ? ' (empty)' : (' ' << values.join(", "))

  %(#<#{self.class}#{values}>)
end

#key?(key) ⇒ Boolean Also known as: has_key?

Public

Returns:

  • (Boolean) 


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# File 'lib/faraday/options.rb', line 94

def key?(key)
  keys.include?(key)
end

#keys ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 76

def keys
  members.reject { |member| send(member).nil? }
end

#merge(value) ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 51

def merge(value)
  dup.update(value)
end

#symbolized_key_set ⇒ Object 



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# File 'lib/faraday/options.rb', line 172

def symbolized_key_set
  @symbolized_key_set ||= Set.new(keys.map { |k| k.to_sym })
end

#to_hash ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 116

def to_hash
  hash = {}
  members.each do |key|
    value = send(key)
    hash[key.to_sym] = value unless value.nil?
  end
  hash
end

#update(obj) ⇒ Object Also known as: merge!

Public



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# File 'lib/faraday/options.rb', line 19

def update(obj)
  obj.each do |key, value|
    if sub_options = self.class.options_for(key)
      value = sub_options.from(value) if value
    elsif Hash === value
      hash = {}
      value.each do |hash_key, hash_value|
        hash[hash_key] = hash_value
      end
      value = hash
    end

    self.send("#{key}=", value) unless value.nil?
  end
  self
end

#value?(value) ⇒ Boolean Also known as: has_value?

Public

Returns:

  • (Boolean) 


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# File 'lib/faraday/options.rb', line 109

def value?(value)
  values.include?(value)
end

#values_at(*keys) ⇒ Object

Public



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# File 'lib/faraday/options.rb', line 71

def values_at(*keys)
  keys.map { |key| send(key) }
end