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

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Code::Object

#<=>, #==, call, #code_and_operator, code_and_operator, #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_string, code_to_string, falsy?, #falsy?, #hash, inspect, maybe, multi_fetch, #multi_fetch, repeat, #sig, sig, #to_json, to_s, truthy?, #truthy?, |

Constructor Details

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

Returns a new instance of Function.



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

def initialize(*args, **_kargs, &_block)
  parameters = args.first.presence || List.new
  parameters = parameters.raw if parameters.is_an?(Object)
  @parameters = List.new(parameters)
  @parameters.raw.map! do |parameter|
    if parameter.is_a?(Node::FunctionParameter)
      Parameter.new(
        Dictionary.new({
          String.new(:name) => String.new(parameter.name),
          String.new(:keyword) => Boolean.new(parameter.keyword?),
          String.new(:regular_splat) => Boolean.new(parameter.regular_splat?),
          String.new(:keyword_splat) => Boolean.new(parameter.keyword_splat?),
          String.new(:default) => Code.new(parameter.default),
        })
      )
    else
      Parameter.new(parameter)
    end
  end
  @body = Code.new(args.second.presence || Nothing.new)
  super
end

Instance Attribute Details

#body ⇒ Object (readonly)

Returns the value of attribute body.



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

def body
  @body
end

#parameters ⇒ Object (readonly)

Returns the value of attribute parameters.



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

def parameters
  @parameters
end

Class Method Details

.name ⇒ Object 



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# File 'lib/code/object/function.rb', line 31

def self.name
  "Function"
end

Instance Method Details

#as_json ⇒ Object 



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# File 'lib/code/object/function.rb', line 105

def as_json(...)
  raw.as_json(...)
end

#call(**args) ⇒ Object 



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# File 'lib/code/object/function.rb', line 35

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

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

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



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# File 'lib/code/object/function.rb', line 49

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

  parameters.raw.each.with_index do |parameter, index|
    if parameter.regular_splat?
      context.code_set(
        parameter.name,
        List.new(arguments.select(&:regular?).map(&:value))
      )
    elsif parameter.keyword_splat?
      context.code_set(
        parameter.name,
        Dictionary.new(
          arguments.select(&:keyword?).map(&:name_value).to_h
        )
      )
    elsif parameter.keyword?
      argument =
        arguments
          .detect { |argument| argument.name == parameter.name }
          &.value
      argument = parameter.evaluate(**globals) if argument.nil?
      context.code_set(parameter.name, argument)
    elsif parameter.regular?
      argument = arguments[index]&.value
      argument = parameter.evaluate(**globals) if argument.nil?
      context.code_set(parameter.name, argument)
    end
  end

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

#inspect ⇒ Object 



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# File 'lib/code/object/function.rb', line 82

def inspect
  "function"
end

#signature_for_call ⇒ Object 



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# File 'lib/code/object/function.rb', line 86

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

#to_s ⇒ Object 



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# File 'lib/code/object/function.rb', line 101

def to_s
  ""
end