Class: Accord::AdapterRegistry

Inherits:
BaseRegistry show all
Defined in:
lib/accord/adapter_registry.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseRegistry

#map_provided_by

Class Method Details

.lookup_class ⇒ Object 



26
27
28
 
# File 'lib/accord/adapter_registry.rb', line 26

def self.lookup_class
  AdapterLookup
end

Instance Method Details

#all(options = {}) ⇒ Object 



58
59
60
61
62
 
# File 'lib/accord/adapter_registry.rb', line 58

def all(options={})
  required = normalize_interfaces(options[:required] || [nil])
  provided = options[:provided] || Interface
  registrations.by_order(required.size).partial(required, provided)
end

#first(options = {}) ⇒ Object 



51
52
53
54
55
56
 
# File 'lib/accord/adapter_registry.rb', line 51

def first(options={})
  required = normalize_interfaces(options[:required] || [nil])
  provided = options[:provided] || Interface
  name     = options[:name] || ''
  registrations.by_order(required.size)[[required, provided, name]]
end

#get(objects, provided, *args) ⇒ Object 



81
82
83
84
85
86
87
88
 
# File 'lib/accord/adapter_registry.rb', line 81

def get(objects, provided, *args)
  options = args.last.is_a?(Hash) ? args.pop : {}
  name    = args.last || ''
  default = options.delete(:default)
  factory = lookup(map_provided_by(objects), provided, name, options)
  return (factory.call(*objects) || default) if factory
  default
end

#lookup(required, provided, *args) ⇒ Object 



64
65
66
67
68
69
70
71
72
 
# File 'lib/accord/adapter_registry.rb', line 64

def lookup(required, provided, *args)
  required = normalize_interfaces(required || [nil])
  provided ||= Interface
  options  = args.last.is_a?(Hash) ? args.pop : {}
  name     = args.last || ''
  default  = options.delete(:default)
  lookup   = registrations.by_order(required.size)
  lookup.first(required, provided, name) || default
end

#lookup_all(required, provided) ⇒ Object 



74
75
76
77
78
79
 
# File 'lib/accord/adapter_registry.rb', line 74

def lookup_all(required, provided)
  required = normalize_interfaces(required || [nil])
  provided ||= Interface
  lookup   = registrations.by_order(required.size)
  lookup.all(required, provided)
end

#register(required, provided, name = '', &value) ⇒ Object

Raises:

  • (ArgumentError) 


30
31
32
33
34
35
 
# File 'lib/accord/adapter_registry.rb', line 30

def register(required, provided, name='', &value)
  raise ArgumentError, "cannot register without a block" unless value
  required = normalize_interfaces(required || [nil])
  provided ||= Interface
  registrations.by_order(required.size)[[required, provided, name]] = value
end

#unregister(required, provided, name, value = nil) ⇒ Object 



37
38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/accord/adapter_registry.rb', line 37

def unregister(required, provided, name, value=nil)
  required = normalize_interfaces(required || [nil])
  provided ||= Interface

  lookup = registrations.by_order(required.size)
  key = [required, provided, name]
  old = lookup[key]

  return if old.nil?
  return if !value.nil? && !old.equal?(value)

  lookup.delete(key)
end