Class: Code::Object::Function

Inherits:
Code::Object show all
Defined in:
lib/code/object/function.rb

Instance Attribute Summary collapse

Attributes inherited from Code::Object

#raw

Instance Method Summary collapse

Methods inherited from Code::Object

#<=>, #==, as_json, #as_json, call, #code_and_operator, code_and_operator, #code_as_json, code_as_json, code_different, #code_different, #code_equal_equal, code_equal_equal, code_equal_equal_equal, #code_equal_equal_equal, code_exclamation_point, #code_exclamation_point, code_exclusive_range, #code_exclusive_range, code_inclusive_range, #code_inclusive_range, code_new, code_or_operator, #code_or_operator, code_self, #code_self, #code_to_json, code_to_json, falsy?, #falsy?, #hash, inspect, maybe, multi_fetch, #multi_fetch, #nothing?, nothing?, repeat, sig, #sig, #succ, to_json, #to_json, to_s, truthy?, #truthy?, |

Constructor Details

#initialize(*args, **_kargs) ⇒ Function

Returns a new instance of Function.



8
9
10
11
12
13
 
# File 'lib/code/object/function.rb', line 8

def initialize(*args, **_kargs, &)
  @parameters = List.new(args.first.presence || [])
  @parameters.raw.map! { |parameter| Parameter.new(parameter) }
  @body = Code.new(args.second.presence || Nothing.new)
  @raw = List.new(parameters, body)
end

Instance Attribute Details

#body ⇒ Object (readonly)

Returns the value of attribute body.



6
7
8
 
# File 'lib/code/object/function.rb', line 6

def body
  @body
end

#parameters ⇒ Object (readonly)

Returns the value of attribute parameters.



6
7
8
 
# File 'lib/code/object/function.rb', line 6

def parameters
  @parameters
end

Instance Method Details

#call(**args) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/code/object/function.rb', line 15

def call(**args)
  operator = args.fetch(:operator, nil)
  arguments = args.fetch(:arguments, List.new)
  globals = multi_fetch(args, *GLOBALS)

  case operator.to_s
  when "", "call"
    sig(args) { signature_for_call }
    code_call(*arguments.raw, **globals)
  else
    super
  end
end

#code_call(*arguments, **globals) ⇒ Object 



29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/code/object/function.rb', line 29

def code_call(*arguments, **globals)
  context = Context.new({}, globals[:context])

  parameters.raw.each.with_index do |parameter, index|
    argument =
      if parameter.keyword?
        arguments
          .detect do |dictionary|
            dictionary.code_has_value?(parameter.code_name)
          end
          &.code_get(parameter.code_name)
      else
        arguments[index]
      end
    argument = parameter.evaluate(**globals) if argument.nil?
    context.code_set(parameter.code_name, argument)
  end

  body.evaluate(**globals, context:)
end

#signature_for_call ⇒ Object 



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/code/object/function.rb', line 50

def signature_for_call
  parameters
    .raw
    .inject([]) do |signature, parameter|
      if parameter.keyword?
        if signature.last.is_a?(::Hash)
          signature.last.code_set(parameter.code_name, Object)
          signature
        else
          signature + [{ parameter.code_name => Object }]
        end
      else
        signature + [Object]
      end
    end + [Object.repeat]
end