Class: CodeTools::AST::SplatValue

Inherits:
Node
  • Object
show all
Defined in:
lib/rubinius/ast/values.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, value) ⇒ SplatValue

Returns a new instance of SplatValue.



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# File 'lib/rubinius/ast/values.rb', line 8

def initialize(line, value)
  @line = line
  @value = value
end

Instance Attribute Details

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/rubinius/ast/values.rb', line 6

def value
  @value
end

Instance Method Details

#bytecode(g) ⇒ Object 



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# File 'lib/rubinius/ast/values.rb', line 13

def bytecode(g)
  done = g.new_label
  coerce = g.new_label
  make_array = g.new_label

  @value.bytecode(g)
  kind_of_array(g, done)

  g.dup
  g.push_literal :to_a
  g.push :true
  g.send :respond_to?, 2, true
  g.git coerce

  make_array.set!
  g.make_array 1
  g.goto done

  coerce.set!
  g.dup
  g.send :to_a, 0, true

  discard = g.new_label
  check_array = g.new_label

  g.dup
  g.push :nil
  g.send :equal?, 1, true
  g.gif check_array

  g.pop
  g.goto make_array

  check_array.set!
  kind_of_array(g, discard)

  g.push_type
  g.move_down 2
  g.push_literal :to_a
  g.push_cpath_top
  g.find_const :Array
  g.send :coerce_to_type_error, 4, true
  g.goto done

  discard.set!
  g.swap
  g.pop

  done.set!
end

#kind_of_array(g, label) ⇒ Object 



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# File 'lib/rubinius/ast/values.rb', line 64

def kind_of_array(g, label)
  g.dup
  g.push_cpath_top
  g.find_const :Array
  g.swap
  g.kind_of
  g.git label
end

#splat? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubinius/ast/values.rb', line 77

def splat?
  true
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/ast/values.rb', line 73

def to_sexp
  [:splat, @value.to_sexp]
end