Class: Code::Node::If

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

Defined Under Namespace

Classes: Else

Constant Summary collapse

IF_KEYWORD = 
"if"
UNLESS_KEYWORD = 
"unless"
ELSIF_KEYWORD = 
"elsif"
ELSE_KEYWORD = 
"else"

Instance Method Summary collapse

Methods inherited from Code::Node

#resolve

Constructor Details

#initialize(parsed) ⇒ If

Returns a new instance of If.



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# File 'lib/code/node/if.rb', line 26

def initialize(parsed)
  return if parsed.blank?

  @first_operator = parsed.delete(:first_operator).presence
  @first_statement =
    Node::Statement.new(parsed.delete(:first_statement).presence)
  @first_body = Node::Code.new(parsed.delete(:first_body).presence)
  @elses = parsed.delete(:elses).presence || []
  @elses.map! { |elses| Node::If::Else.new(elses) }
end

Instance Method Details

#evaluate(**args) ⇒ Object 



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# File 'lib/code/node/if.rb', line 37

def evaluate(**args)
  if (
       @first_operator == IF_KEYWORD &&
         @first_statement.evaluate(**args).truthy?
     ) ||
       (
         @first_operator == UNLESS_KEYWORD &&
           @first_statement.evaluate(**args).falsy?
       )
    @first_body.evaluate(**args)
  else
    (@elses || []).each do |elses|
      if (
           elses.operator == ELSIF_KEYWORD &&
             elses.statement.evaluate(**args).truthy?
         ) ||
           (
             elses.operator == IF_KEYWORD &&
               elses.statement.evaluate(**args).truthy?
           ) ||
           (
             elses.operator == UNLESS_KEYWORD &&
               elses.statement.evaluate(**args).falsy?
           ) || (elses.operator == ELSE_KEYWORD)
        return elses.body.evaluate(**args)
      end
    end

    ::Code::Object::Nothing.new
  end
end