Class: BinData::MultiFieldArgExtractor

Inherits:
Object
  • Object
show all
Defined in:
lib/bindata/dsl.rb

Overview

Extracts args for Records and Buffers.

Foo.new(:bar => “baz) is ambiguous as to whether :bar is a value or parameter.

BaseArgExtractor always assumes :bar is parameter. This extractor correctly identifies it as value or parameter.

Class Method Summary collapse

Class Method Details

.extract(the_class, the_args) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
 
# File 'lib/bindata/dsl.rb', line 10

def extract(the_class, the_args)
  value, parameters, parent = BaseArgExtractor.extract(the_class, the_args)

  if parameters_is_value?(the_class, value, parameters)
    value = parameters
    parameters = {}
  end

  [value, parameters, parent]
end

.field_names_in_parameters?(the_class, parameters) ⇒ Boolean

Returns:

  • (Boolean) 


29
30
31
32
33
34
 
# File 'lib/bindata/dsl.rb', line 29

def field_names_in_parameters?(the_class, parameters)
  field_names = the_class.fields.field_names
  param_keys = parameters.keys

  (field_names & param_keys).length > 0
end

.parameters_is_value?(the_class, value, parameters) ⇒ Boolean

Returns:

  • (Boolean) 


21
22
23
24
25
26
27
 
# File 'lib/bindata/dsl.rb', line 21

def parameters_is_value?(the_class, value, parameters)
  if value.nil? and parameters.length > 0
    field_names_in_parameters?(the_class, parameters)
  else
    false
  end
end