Class: CodeTools::AST::Send

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, 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, #visit, #walk

Constructor Details

#initialize(line, receiver, name, privately = false, vcall_style = false) ⇒ Send

Returns a new instance of Send.



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

def initialize(line, receiver, name, privately=false, vcall_style=false)
  @line = line
  @receiver = receiver
  @name = name
  @privately = privately
  @block = nil
  @vcall_style = vcall_style
end

Instance Attribute Details

#block ⇒ Object

Returns the value of attribute block.



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

def block
  @block
end

#name ⇒ Object

Returns the value of attribute name.



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

def name
  @name
end

#privately ⇒ Object

Returns the value of attribute privately.



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

def privately
  @privately
end

#receiver ⇒ Object

Returns the value of attribute receiver.



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

def receiver
  @receiver
end

#variable ⇒ Object

Returns the value of attribute variable.



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

def variable
  @variable
end

#vcall_style ⇒ Object

Returns the value of attribute vcall_style.



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

def vcall_style
  @vcall_style
end

Instance Method Details

#arguments_sexp ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 112

def arguments_sexp
  sexp = [:arglist]
  sexp << @block.to_sexp if @block
  sexp
end

#bytecode(g, anddot = false) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 23

def bytecode(g, anddot=false)
  pos(g)

  if @vcall_style
    if reference = check_local_reference(g)
      return reference.get_bytecode(g)
    end
  elsif !anddot
    @receiver.bytecode(g)
  end

  if @block
    @block.bytecode(g)
    g.send_with_block @name, 0, @privately
  elsif @vcall_style
    g.send_vcall @name
  else
    g.send @name, 0, @privately
  end
end

#check_local_reference(g) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 17

def check_local_reference(g)
  if @receiver.kind_of? Self and g.state.check_for_locals
    g.state.scope.search_local(@name)
  end
end

#defined(g) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 69

def defined(g)
  if @block.kind_of? For
    @block.defined(g)
    return
  end

  if @vcall_style and check_local_reference(g)
    g.push_literal "local-variable"
    return
  end

  f = g.new_label
  done = g.new_label

  @receiver.value_defined(g, f)

  g.push_literal @name

  if @vcall_style or @privately
    g.push_true
    g.send :__respond_to_p__, 2
  else
    g.push_self
    g.invoke_primitive :vm_check_callable, 3
  end
  g.goto_if_false f
  g.push_literal "method"
  g.goto done

  f.set!
  g.push_nil

  done.set!
end

#receiver_sexp ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 108

def receiver_sexp
  @privately ? nil : @receiver.to_sexp
end

#sexp_name ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 104

def sexp_name
  :call
end

#to_sexp ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 118

def to_sexp
  case @block
  when For
    n, x, b = @block.to_sexp
    xs = @receiver.to_sexp
    [n, x, xs, b]
  else
    [sexp_name, receiver_sexp, @name, arguments_sexp]
  end
end

#value_defined(g, f) ⇒ Object 



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# File 'lib/rubinius/code/ast/sends.rb', line 44

def value_defined(g, f)
  # Save the current exception into a stack local
  g.push_exception_state
  outer_exc_state = g.new_stack_local
  g.set_stack_local outer_exc_state
  g.pop

  ok = g.new_label
  ex = g.new_label
  g.setup_unwind ex, RescueType

  bytecode(g)

  g.pop_unwind
  g.goto ok

  ex.set!
  g.clear_exception
  g.push_stack_local outer_exc_state
  g.restore_exception_state
  g.goto f

  ok.set!
end