Class: CodeTools::AST::ForParameters

Inherits:
Node
  • Object
show all
Defined in:
lib/rubinius/code/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, assignments) ⇒ ForParameters

Returns a new instance of ForParameters.



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# File 'lib/rubinius/code/ast/sends.rb', line 850

def initialize(line, assignments)
  @line = line
  @assignments = assignments
  @splat_index = assignments.kind_of?(MultipleAssignment) ? 0 : nil
  @required_args = @splat_index ? 0 : 1
  @post_args = 0
  @keywords = nil
  @block_index = nil
  @kwrest_index = nil
end

Instance Attribute Details

#assignments ⇒ Object

Returns the value of attribute assignments.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def assignments
  @assignments
end

#block_index ⇒ Object

Returns the value of attribute block_index.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def block_index
  @block_index
end

#keywords ⇒ Object

Returns the value of attribute keywords.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def keywords
  @keywords
end

#kwrest_index ⇒ Object

Returns the value of attribute kwrest_index.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def kwrest_index
  @kwrest_index
end

#post_args ⇒ Object

Returns the value of attribute post_args.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def post_args
  @post_args
end

#required_args ⇒ Object Also known as: total_args, arity

Returns the value of attribute required_args.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def required_args
  @required_args
end

#splat_index ⇒ Object

Returns the value of attribute splat_index.



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# File 'lib/rubinius/code/ast/sends.rb', line 847

def splat_index
  @splat_index
end

Instance Method Details

#bytecode(g) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 871

def bytecode(g)
  map_arguments(g.state.scope)

  if @splat_index
    g.push_rubinius
    g.find_const :Runtime
    g.push_local 0
    g.send :unwrap_block_arg, 1
  else
    g.push_local 0
  end

  g.state.push_masgn
  @assignments.bytecode(g)
  g.state.pop_masgn
end

#map_arguments(scope) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 864

def map_arguments(scope)
  case @assignments
  when LocalVariable
    scope.assign_local_reference @assignments
  end
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 888

def to_sexp
  sexp = [:args]

  case @assignments
  when ArrayLiteral
    @assignments.each do |a|
      case a
      when Symbol
        sexp << a
      when Node
        sexp << a.to_sexp
      end
    end
  else
    sexp << @assignments.to_sexp
  end

  sexp
end