Class: Code::Node::While

Inherits:
Code::Node show all
Defined in:
lib/code/node/while.rb

Constant Summary collapse

WHILE_KEYWORD = 
"while"
UNTIL_KEYWORD = 
"until"
LOOP_KEYWORD = 
"loop"

Instance Method Summary collapse

Methods inherited from Code::Node

#resolve

Constructor Details

#initialize(parsed) ⇒ While

Returns a new instance of While.



10
11
12
13
14
15
16
17
18
19
20
 
# File 'lib/code/node/while.rb', line 10

def initialize(parsed)
  return if parsed.blank?

  @operator = parsed.delete(:operator).presence
  @statement = Statement.new(parsed.delete(:statement)) if parsed.key?(
    :statement
  )
  @parameters = parsed.delete(:parameters) { [] }.presence || []
  @parameters.map! { |parameter| FunctionParameter.new(parameter) }
  @body = Code.new(parsed.delete(:body).presence)
end

Instance Method Details

#evaluate(**args) ⇒ Object 



22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'lib/code/node/while.rb', line 22

def evaluate(**args)
  case @operator
  when WHILE_KEYWORD
    evaluate_conditional_loop(condition_truthy: true, **args)
  when UNTIL_KEYWORD
    evaluate_conditional_loop(condition_truthy: false, **args)
  when LOOP_KEYWORD
    evaluate_infinite_loop(**args)
  else
    Object::Nothing.new
  end
end