Class: CodeTools::AST::Arguments

Inherits:
Node
  • Object
show all
Defined in:
lib/rubinius/ast/sends.rb

Instance Attribute Summary collapse

Attributes inherited from Node

#line

Instance Method Summary collapse

Methods inherited from Node

#ascii_graph, #attributes, #children, #defined, match_arguments?, match_send?, #new_block_generator, #new_generator, #node_name, #or_bytecode, #pos, #set_child, #transform, transform, transform_comment, transform_kind, transform_kind=, transform_name, #value_defined, #visit, #walk

Constructor Details

#initialize(line, arguments = nil) ⇒ Arguments

Returns a new instance of Arguments.



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# File 'lib/rubinius/ast/sends.rb', line 433

def initialize(line, arguments=nil)
  @line = line
  @splat = nil

  case arguments
  when SplatValue
    @splat = arguments
    @array = []
  when ConcatArgs
    case arguments.array
    when ArrayLiteral
      @array = arguments.array.body
      @splat = SplatValue.new line, arguments.rest
    when PushArgs
      @array = []
      node = SplatValue.new line, arguments.rest
      @splat = CollectSplat.new line, arguments.array, node
    else
      @array = []
      @splat = CollectSplat.new line, arguments.array, arguments.rest
    end
  when PushArgs
    if arguments.arguments.kind_of? ConcatArgs
      if ary = arguments.arguments.peel_lhs
        @array = ary
      else
        @array = []
      end
    else
      @array = []
    end

    node = ArrayLiteral.new line, [arguments.value]
    @splat = CollectSplat.new line, arguments.arguments, node
  when ArrayLiteral
    @array = arguments.body
  when nil
    @array = []
  else
    @array = [arguments]
  end
end

Instance Attribute Details

#array ⇒ Object

Returns the value of attribute array.



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# File 'lib/rubinius/ast/sends.rb', line 431

def array
  @array
end

#splat ⇒ Object

Returns the value of attribute splat.



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# File 'lib/rubinius/ast/sends.rb', line 431

def splat
  @splat
end

Instance Method Details

#bytecode(g) ⇒ Object 



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# File 'lib/rubinius/ast/sends.rb', line 498

def bytecode(g)
  @array.each { |x| x.bytecode(g) }
  @splat.bytecode(g) if @splat
end

#masgn_bytecode(g) ⇒ Object 



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# File 'lib/rubinius/ast/sends.rb', line 490

def masgn_bytecode(g)
  @array.each do |x|
    x.bytecode(g)
    g.swap
  end
  # TODO: splat
end

#size ⇒ Object 



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# File 'lib/rubinius/ast/sends.rb', line 476

def size
  @array.size
end

#splat? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubinius/ast/sends.rb', line 486

def splat?
  not @splat.nil?
end

#stack_size ⇒ Object 



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# File 'lib/rubinius/ast/sends.rb', line 480

def stack_size
  size = @array.size
  size += 1 if splat?
  size
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/ast/sends.rb', line 503

def to_sexp
  sexp = @array.map { |x| x.to_sexp }
  sexp << @splat.to_sexp if @splat
  sexp
end