Class: IDL::RubyStubWriter

Inherits:
RubyWriterBase show all
Defined in:
lib/ridlbe/ruby/walker.rb

Instance Method Summary collapse

Methods inherited from RubyWriterBase

#indent, #nest, #print, #printi, #printiln, #println, #visit_nodes

Constructor Details

#initialize(output = STDOUT, params = {}, indent = ' ') ⇒ RubyStubWriter

Returns a new instance of RubyStubWriter.



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# File 'lib/ridlbe/ruby/walker.rb', line 52

def initialize(output = STDOUT, params = {}, indent = '  ')
  super
end

Instance Method Details

#declare_interface(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 115

def declare_interface(node)
  name = node.rubyname
  if not @params[:class_interfaces].nil? and @params[:class_interfaces].include?(name)
    printiln("class #{name}; end  ## interface forward")
  else
    printiln("module #{name}; end  ## interface forward")
  end
end

#declare_struct(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 871

def declare_struct(node); end

#declare_union(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 934

def declare_union(node); end

#declare_valuetype(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 255

def declare_valuetype(node); end

#enter_exception(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 923

def enter_exception(node)
  println
  name = node.rubyname
  printiln("class #{name} < CORBA::UserException")
  @nest += 1
end

#enter_include(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 91

def enter_include(node)
  printiln('## include')
  printiln("CORBA.implement('#{node.filename}', {}, CORBA::IDL::CLIENT_STUB) {")
  println
end

#enter_interface(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 124

def enter_interface(node)
  println
  name = node.rubyname
  if node.is_pseudo?
    if not @params[:class_interfaces].nil? and @params[:class_interfaces].include?(name)
      printiln("class #{name}  ## pseudo object interface")
    else
      printiln("module #{name}  ## pseudo object interface")
    end
    @nest += 1
  else
    if not @params[:class_interfaces].nil? and @params[:class_interfaces].include?(name)
      printiln("class #{node.rubyname}  ## interface")
    else
      printiln("module #{node.rubyname}  ## interface")
    end
    println
    @nest += 1

    if node.bases.size > 0
      node.bases.each do |n|
        printiln("include #{n.scoped_rubyname}")
      end
      println
    end

    printiln(format("Id = '%s'.freeze", node.repository_id))
    printi('Ids = [ Id')
    if node.is_abstract?
      println(',')
      printi("        'IDL:omg.org/CORBA/AbstractBase:1.0'")
    end
    if node.bases.size > 0
      node.bases.each do |n|
        println(',')
        printi("        #{n.scoped_rubyname}::Id")
      end
    end
    println(' ].freeze')

    println
    unless node.is_abstract?
      printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::ObjectRef.new(Id, '%s', self); end",
                      node.rubyname, node.rubyname, node.rubyname))
    else
      printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::AbstractInterface.new(Id, '%s', self); end",
                      node.rubyname, node.rubyname, node.rubyname))
    end
    printiln('self._tc  # register typecode');

    println
    printiln("def #{name}._narrow(obj)")
    nest {
      printiln('return nil if CORBA.is_nil(obj)')
      if node.is_local?
        printiln('return CORBA::Stub.create_stub(obj)._unchecked_narrow!(self)')
      else
        printiln('return CORBA::Stub.create_stub(obj)._narrow!(self)')
      end
    }
    printiln('end')
    println
    printiln("def #{name}._duplicate(obj)")
    nest {
      if node.is_local?
        printiln('obj');
      else
        printiln('return nil if CORBA.is_nil(obj)')
        printiln('return CORBA::Stub.create_stub(super(obj))._narrow!(self)')
      end
    }
    printiln('end')
    println
    printiln('def _interface_repository_id')
    nest {
      printiln("#{node.scoped_rubyname}::Id")
    }
    printiln('end')
  end
  println
end

#enter_module(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 103

def enter_module(node)
  printiln('module ' + node.rubyname)
  println
  @nest += 1
end

#enter_struct(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 873

def enter_struct(node)
  println
  name = node.rubyname
  printiln("class #{name} < CORBA::Portable::Struct")
  @nest += 1
end

#enter_union(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 936

def enter_union(node)
  println
  name = node.rubyname
  printiln("class #{name} < CORBA::Portable::Union")
  @nest += 1
end

#enter_valuetype(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 257

def enter_valuetype(node)
  println
  name = node.rubyname
  unless node.is_abstract?
    printiln("class #{name}")
  else
    printiln("module #{name}")
  end
  @nest += 1

  unless node.is_abstract?
    if node.is_custom?
      printiln('include CORBA::Portable::CustomValueBase')
    else
      printiln('include CORBA::ValueBase')
    end
  else
    printiln('include CORBA::AbstractValueBase')
  end

  unless node.is_abstract?
    trunc_ids = node.truncatable_ids
    println
    printi('TRUNCATABLE_IDS = [')
    print("'#{trunc_ids.shift}'")
    unless trunc_ids.empty?
      nest {
        trunc_ids.each do |trunc_id|
          println(',')
          printi("'#{trunc_id}'")
        end
      }
    end
    println(' ].freeze')
  end

  println
  printiln(format('def %s._tc', node.rubyname))
  nest {
    printi("@@tc_#{node.rubyname} ||= ")
    print_valuetype_typecode(node)
    println
  }
  printiln('end')
  printiln('self._tc  # register typecode')
end

#expression_to_s(exp) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 764

def expression_to_s(exp)
  case exp
  when Expression::Value
    value_to_s(exp)
  when Expression::Operation
    operation_to_s(exp)
  when Expression::ScopedName, Expression::Enumerator
    exp.node.scoped_rubyname
  else
    raise "unknown expression type: #{exp.class.name}"
  end
end

#get_arg_type(_idl_argtype) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 753

def get_arg_type(_idl_argtype)
  case _idl_argtype
  when IDL::AST::Parameter::IN
    'CORBA::ARG_IN'
  when IDL::AST::Parameter::OUT
    'CORBA::ARG_OUT'
  else
    'CORBA::ARG_INOUT'
  end
end

#get_typecode(_type) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 688

def get_typecode(_type)
  case _type
  when Type::Octet,
       Type::UShort, Type::Short,
       Type::ULong, Type::Long,
       Type::ULongLong, Type::LongLong,
       Type::Boolean, Type::Char, Type::WChar,
       Type::Float, Type::Double, Type::LongDouble,
       Type::Void, Type::Any
    s = _type.class.name.split('::') # IDL::Type::Octet -> [IDL, Type, Octet]
    s = s[s.length - 1]
    s.downcase!
    format('CORBA._tc_%s', s)

  when Type::Object
    'CORBA._tc_Object'

  when Type::String
    if not _type.length.nil?
      format('CORBA::TypeCode::String.new(%d)', _type.length)
    else
      'CORBA._tc_string'
    end

  when Type::WString
    if not _type.length.nil?
      format('CORBA::TypeCode::WString.new(%d)', _type.length)
    else
      'CORBA._tc_wstring'
    end

  when Type::ScopedName
    scoped_type = _type.node.idltype
    if scoped_type.is_a?(IDL::Type::Interface) && scoped_type.node.is_forward?
      node = scoped_type.node
      "(CORBA::TypeCode.typecode_for_id('#{node.repository_id}') || " +
        "CORBA::TypeCode::ObjectRef.new('#{node.repository_id}', '#{node.rubyname}', #{node.scoped_rubyname}))"
    else
      _type.node.scoped_rubyname + '._tc'
    end

  when Type::Array
    sep = ''
    tc = 'CORBA::TypeCode::Array.new(' +
        get_typecode(_type.basetype) + ', '
    _type.sizes.each do |sz|
      tc += "#{sep}#{sz.to_s}"
      sep = ', '
    end
    tc + ')'

  when Type::Sequence
    if _type.is_recursive?
      "CORBA::TypeCode::Sequence.new(CORBA::TypeCode::Recursive.new('#{_type.basetype.resolved_type.node.repository_id}'))"
    else
      'CORBA::TypeCode::Sequence.new(' +
            get_typecode(_type.basetype) +
            if not _type.length.nil? then format(', %d)', _type.length) else ')' end
    end

  else
    raise "invalid type for (un)marshalling: #{_type.typename}"
  end
end

#leave_exception(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 930

def leave_exception(node)
  leave_struct(node)
end

#leave_include(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 97

def leave_include(node)
  println
  printiln("} ## end of include '#{node.filename}'")
  println
end

#leave_interface(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 206

def leave_interface(node)
  name = node.rubyname
  @nest -= 1
  printiln("end #of interface #{name}")
  println
end

#leave_module(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 109

def leave_module(node)
  @nest -= 1
  printiln("end #of module #{node.rubyname}")
  println
end

#leave_struct(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 880

def leave_struct(node)
  tc_ = if node.is_a? IDL::AST::Exception then 'Except' else 'Struct' end
  println
  printiln(format('def %s._tc', node.rubyname))
  struct_members_ = node.members
  nest {
    printi(format("@@tc_%s ||= CORBA::TypeCode::%s.new('%s'.freeze, '%s'",
                  node.rubyname, tc_, node.repository_id, node.rubyname))
    unless struct_members_.empty?
      pfx = '   ['
      struct_members_.each do |m|
        println(',')
        printi(pfx)
        pfx = '    '
        print(format("['%s', %s]", m.rubyname, get_typecode(m.idltype)))
      end
      println('], self)')
    else
      println(', self)')
    end
  }
  printiln('end')
  printiln('self._tc  # register typecode');
  struct_members_.each do |m|
    printiln(format('attr_accessor :%s', m.rubyname))
  end

  if struct_members_.size > 0
    printiln('def initialize(*param_)')
    nest {
      struct_members_.each do |m|
        printiln("@#{m.rubyname} = param_.shift")
      end
    }
    printiln('end')
    println
  end

  name = node.rubyname
  @nest -= 1
  printiln("end #of #{if node.is_a? IDL::AST::Exception then "exception" else "struct" end} #{name}")
end

#leave_union(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 943

def leave_union(node)
  println
  printiln(format('def %s._tc', node.rubyname))
  nest {
    printiln(format("@@tc_%s ||= CORBA::TypeCode::Union.new('%s'.freeze, '%s',",
                  node.rubyname, node.repository_id, node.rubyname))
    printi("    #{get_typecode(node.switchtype)}")
    if node.members.size > 0
      pfx = '   ['
      node.members.each do |m|
        m.labels.each do |lbl|
          println(',')
          printi(pfx)
          pfx = '    '
          labeltxt = if lbl == :default then ':default'; else expression_to_s(lbl); end
          print(format("[%s, '%s', %s]", labeltxt, m.rubyname, get_typecode(m.idltype)))
        end
      end
      print('], self')
    else
      print(', self')
    end
    if (!node.has_default?) && node.default_label # has implicit default?
      println(", #{expression_to_s(node.default_label)})")
    else
      println(')')
    end
  }
  printiln('end')
  printiln('self._tc  # register typecode');
  ix = 0
  if node.members.size > 0
    node.members.each do |m|
      printiln(format('def %s; @value; end', m.rubyname))
      printiln(format('def %s=(val); _set_value(%d, val); end', m.rubyname, ix))
      ix += m.labels.size
    end
  end

  if (!node.has_default?) && node.default_label # has implicit default?
    def_label = expression_to_s(node.default_label)
    printiln("def _default; @discriminator = #{def_label}; @value = nil; end")
  end

  name = node.rubyname
  @nest -= 1
  printiln("end #of union #{name}")
end

#leave_valuetype(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 304

def leave_valuetype(node)
  println
  printiln('module Intf')
  nest {
    intfs_ = node.interfaces
    unless intfs_.empty?
      printiln('## supported interfaces')
      intfs_.each do |intf|
        printiln("include #{intf.scoped_rubyname}")
      end
      printiln('undef :_interface_repository_id')
    end

    bases_ = Array.new(node.bases)
    if node.has_concrete_base?
      printiln('## concrete base type')
      printiln("include #{bases_.shift.scoped_rubyname}::Intf")
    end
    unless bases_.empty?
      printiln('## abstract base types')
      bases_.each do |base|
        printiln("include #{base.scoped_rubyname}::Intf")
      end
    end

    if node.has_concrete_base? || !bases_.empty? || !intfs_.empty?
      println
    end

    intf_members_ = node.interface_members
    [IDL::AST::Operation, IDL::AST::Attribute].each do |m_type|
      has_type = false
      intf_members_.each do |m|
        if m.is_a?(m_type)
          if m.is_a?(IDL::AST::Operation)
            printi('## operations') unless has_type
            visit_operation(m)
            has_type = true
          else
            printi('## attributes') unless has_type
            visit_attribute(m)
            has_type = true
          end
        end
      end
      println if has_type
    end

    unless node.is_abstract?
      state_members_ = node.state_members
      has_type = false
      state_members_.each do |m|
        if m.visibility == :public
          printiln('## public value state') unless has_type
          printiln(format('attr_accessor :%s', m.rubyname))
          has_type = true
        end
      end
      println if has_type
      has_type = false
      state_members_.each do |m|
        unless m.visibility == :public
          unless has_type
            printiln('## private value state')
            printiln('protected')
          end
          printiln(format('attr_accessor :%s', m.rubyname))
          has_type = true
        end
      end
      println if has_type

      printiln('public')
      println

      unless node.is_custom?
        printiln('def self.marshal(vt, __os__)')
        nest {
          printiln("#{node.bases.first.scoped_rubyname}::Intf.marshal(vt, __os__)") if node.has_concrete_base?
          unless state_members_.empty?
            printiln('vt._marshal_with(__os__) do')
            nest {
              state_members_.each_with_index do |m, i|
                printiln("__os__.write_member(#{node.scoped_rubyname}._tc.member_type(#{i}),")
                printiln("                    self.#{m.rubyname})")
              end
            }
            printiln('end')
          end
        }
        printiln('end')
        println

        printiln('def self.unmarshal(vt, __is__)')
        nest {
          printiln("#{node.bases.first.scoped_rubyname}::Intf.unmarshal(vt, __is__)") if node.has_concrete_base?
          unless state_members_.empty?
            printiln('vt._unmarshal_with(__is__) do')
            nest {
              state_members_.each_with_index do |m, i|
                printi("self.#{m.rubyname} = ")
                println("__is__.read_member(#{node.scoped_rubyname}._tc.member_type(#{i}))")
              end
            }
            printiln('end')
          end
        }
        printiln('end')
        println

        printiln('def marshal(os)')
        nest {
          printiln("#{node.scoped_rubyname}::Intf.marshal(self, os)")
        }
        printiln('end')
        println

        printiln('def unmarshal(is)')
        nest {
          printiln("#{node.scoped_rubyname}::Intf.unmarshal(self, is)")
        }
        printiln('end')
        println
      end
    end
  }
  printiln('end # of Intf')
  println
  printiln('include Intf')
  println

  @nest -= 1
  if node.is_a?(IDL::AST::Eventtype)
    printiln("end #of eventtype #{node.rubyname}")
  else
    printiln("end #of valuetype #{node.rubyname}")
  end

  unless node.is_abstract?
    println
    initializers = node.initializers
    printiln("class #{node.rubyname}Factory < CORBA::Portable::ValueFactoryBase")
    nest {
      printiln("VALUE_ID = '#{node.repository_id}'.freeze")
      if initializers.empty?
        unless node.has_operations_or_attributes?(false)
          # valuetype has only state, create the default factory
          printiln('def _create_default')
          nest {
            printiln("#{node.scoped_rubyname}.new")
          }
          printiln('end')
        end
      else
        println
        initializers.each do |init|
          printiln("def #{init.rubyname}(#{init.params.collect { |p| p.rubyname }.join(',')})")
          nest {
            printiln("raise RuntimeError, 'unimplemented local operation called'")
          }
          printiln('end')
        end
      end
    }
    printiln("end # of #{node.rubyname}Factory")
  end
end

#operation_to_s(exp) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 835

def operation_to_s(exp)
  s = nil
  op = exp.operands
  case exp
  when Expression::Operation::UnaryPlus
    s = expression_to_s(op[0])
  when Expression::Operation::UnaryMinus
    s = '-' + expression_to_s(op[0])
  when Expression::Operation::UnaryNot
    s = '~' + expression_to_s(op[0])
  when Expression::Operation::Xor
    s = expression_to_s(op[0]) + ' ^ ' + expression_to_s(op[1])
  when Expression::Operation::Or
    s = expression_to_s(op[0]) + ' | ' + expression_to_s(op[1])
  when Expression::Operation::And
    s = expression_to_s(op[0]) + ' & ' + expression_to_s(op[1])
  when Expression::Operation::LShift
    s = expression_to_s(op[0]) + ' << ' + expression_to_s(op[1])
  when Expression::Operation::RShift
    s = expression_to_s(op[0]) + ' >> ' + expression_to_s(op[1])
  when Expression::Operation::Add
    s = expression_to_s(op[0]) + ' + ' + expression_to_s(op[1])
  when Expression::Operation::Minus
    s = expression_to_s(op[0]) + ' - ' + expression_to_s(op[1])
  when Expression::Operation::Mult
    s = expression_to_s(op[0]) + ' * ' + expression_to_s(op[1])
  when Expression::Operation::Div
    s = expression_to_s(op[0]) + ' / ' + expression_to_s(op[1])
  when Expression::Operation::Mod
    s = expression_to_s(op[0]) + ' % ' + expression_to_s(op[1])
  else
    raise "unknown operation: #{exp.type.name}"
  end
  '(' + s + ')'
end

#post_visit(parser) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 77

def post_visit(parser)
  idleval = @params[:idl_eval] || false
  unless idleval
    printiln("} ## end of '#{@params[:idlfile]}'")
  end
  leave_module(parser.root_namespace) unless parser.root_namespace.nil?
  println('# -*- END -*-')
end

#pre_visit(parser) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 56

def pre_visit(parser)
  print(
%Q{# -*- Ruby -*-
#
# ****  Code generated by the R2CORBA IDL Compiler ****
# R2CORBA has been developed by:
#        Remedy IT Expertise BV
#        The Netherlands
#        https://www.remedy.nl
#
})
  println("require 'corba'") if @params[:libinit]
  println
  enter_module(parser.root_namespace) unless parser.root_namespace.nil?
  idleval = @params[:idl_eval] || false
  unless idleval
    printiln("CORBA.implement('#{@params[:idlfile]}', {}, CORBA::IDL::CLIENT_STUB) {")
    println
  end
end

#value_to_s(exp) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 777

def value_to_s(exp)
  s = nil
  v = exp.value
  case exp.idltype
  when Type::Void
    s = 'nil'
  when Type::Char
    s = "'#{v.chr}'"
  when Type::Integer,
    Type::Boolean,
    Type::Octet,
    Type::Float
    s = v.to_s
  when Type::WChar
    s = (case v.first
    when :char, :esc_ch
      v.last.unpack('c')
    when :esc
      IDL::Scanner::ESCTBL[v.last]
    when :oct
      v.last.oct
    when :hex2, :hex4
      v.last.hex
    else
      0
    end).to_s
  when Type::Enum
    v = exp.idltype.narrow(v)
    s = exp.idltype.node.enumerators[v].scoped_rubyname
  when Type::String
    s = "'#{v.to_s}'"
  when Type::WString
    v = (v.collect do |(elt, elv)|
      case elt
      when :char, :esc_ch
        elv.unpack('c')
      when :esc
        IDL::Scanner::ESCTBL[elv]
      when :oct
        elv.oct
      when :hex2, :hex4
        elv.hex
      else
        nil
      end
    end).compact
    s = "[#{v.join(',')}]"
  # when Type::Fixed
  # when Type::Any
  # when Type::Object
  when Type::ScopedName
    s = value_to_s(Expression::Value.new(exp.idltype.node.idltype, v))
  else
    raise "#{exp.typename}'s not been supported yet."
  end
  s
end

#visit_attribute(node, from_valuetype = false) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 606

def visit_attribute(node, from_valuetype = false)
  _intf = node.enclosure
  println
  printiln("def #{node.rubyname}()")
  nest do
    if _intf.is_a?(IDL::AST::Valuetype) or from_valuetype
      printiln("@#{node.name}")
    elsif _intf.is_local?
      printiln('raise ::CORBA::NO_IMPLEMENT.new(')
      printiln("         'unimplemented attribute on local interface',")
      printiln('         1, ::CORBA::COMPLETED_NO)')
    else
      ## check if this is a proper object reference
      printiln('raise ::CORBA::NO_IMPLEMENT unless self.respond_to?(:_invoke, true)')

      printiln("_ret = self._invoke('_get_#{node.name}', {")
      nest { printi(":result_type => #{get_typecode(node.idltype)}") }
      if node.get_raises.size > 0
        println(',')
        nest {
          printi(':exc_list => [')
          pfx = ''
          nest {
            node.get_raises.each { |ex|
              println(pfx)
              pfx = ','
              printi(get_typecode(ex))
            }
            print(']')
          }
        }
      end
      println('})')

      printiln('_ret')
    end
  end
  printiln("end #of attribute #{node.name} getter")
  unless node.readonly
    printiln("def #{node.rubyname}=(val)")
    nest do
      if _intf.is_a?(IDL::AST::Valuetype) or from_valuetype
        printiln("@#{node.name} = val")
      elsif _intf.is_local?
        printiln('raise ::CORBA::NO_IMPLEMENT.new(')
        printiln("         'unimplemented attribute on local interface',")
        printiln('         1, ::CORBA::COMPLETED_NO)')
      else
        ## check if this is a proper object reference
        printiln('raise ::CORBA::NO_IMPLEMENT unless self.respond_to?(:_invoke, true)')

        ## validate IN arg
        printiln("val = #{get_typecode(node.idltype)}.validate(val)")
        ## invoke operation
        printiln("self._invoke('_set_#{node.name}', {")
        nest {
          printiln(':arg_list => [')
          nest {
            printiln("['val', CORBA::ARG_IN, #{get_typecode(node.idltype)}, val]],");
          }
          printi(':result_type => CORBA._tc_void')
          if node.set_raises.size > 0
            println(',')
            printi(':exc_list => [')
            pfx = ''
            nest {
              node.set_raises.each { |ex|
                println(pfx)
                pfx = ','
                printi(get_typecode(ex))
              }
              print(']')
            }
          end
          println('})')
        }
      end
    end
    printiln("end #of attribute #{node.name} setter")
  end
end

#visit_const(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 496

def visit_const(node)
  # v = Expression::Value.new(node.idltype, node.value)
  s = node.rubyname + ' = ' + expression_to_s(node.expression)
  printiln(s)
end

#visit_enum(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 992

def visit_enum(node)
  printiln(format('class %s < ::R2CORBA::FIXNUM_KLASS', node.rubyname))
  nest {
    printiln(format('def %s._tc', node.rubyname))
    nest {
      printi(format("@@tc_%s ||= CORBA::TypeCode::Enum.new('%s'.freeze, '%s', [",
                    node.rubyname, node.repository_id, node.rubyname))
      pfx = ''
      node.enumerators.each { |e|
        println(pfx)
        pfx = ','
        printi("    '#{e.rubyname}'")
      }
      println('])')
    }
    printiln('end')
    printiln('self._tc  # register typecode');
  }
  printiln(format('end # enum %s', node.rubyname))
end

#visit_enumerator(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 1013

def visit_enumerator(node)
  v = Expression::Value.new(node.idltype, node.value)
  s = node.rubyname + ' = ' + expression_to_s(v)
  printiln(s)
end

#visit_include(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 86

def visit_include(node)
  printiln(format("require '%s'", node.filename.sub(/\.[^\.]*$/, @params[:stub_pfx])))
  println
end

#visit_operation(node, from_valuetype = false) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 502

def visit_operation(node, from_valuetype = false)
  _parm = node.params
  _in = node.in_params
  _out = node.out_params
  _intf = node.enclosure

  println
  printi("def #{node.rubyname}(")
  print(_in.collect{ |p| p.rubyname }.join(', '))
  if node.oneway
    println(')    # oneway')
  else
    println(')')
  end

  nest do
    if _intf.is_a?(IDL::AST::Valuetype) or from_valuetype
      printiln("raise RuntimeError, 'unimplemented local operation called'")
    elsif _intf.is_local?
      printiln('raise ::CORBA::NO_IMPLEMENT.new(')
      printiln("         'unimplemented operation on local interface',")
      printiln('         1, ::CORBA::COMPLETED_NO)')
    else
      ## check if this is a proper object reference
      printiln('raise ::CORBA::NO_IMPLEMENT unless self.respond_to?(:_invoke, true)')

      ##  validate data for IN/INOUT args
      ##
      if _parm.size > 0
        _parm.each do |p|
          if p.attribute != IDL::AST::Parameter::OUT
            printiln("#{p.rubyname} = #{get_typecode(p.idltype)}.validate(#{p.rubyname})")
          end
        end
      end

      ##  invoke operation
      ##
      if not node.oneway
        printi("_ret = self._invoke('#{node.name}', {")
      else
        printi("self._invoke('#{node.name}', {")
      end

      newln = ''
      if _parm.size > 0
        println(newln)
        nest do
          printi(':arg_list => [')
          nest {
            pfx = ''
            _parm.each do |p|
              println(pfx)
              printi("['#{p.rubyname}', #{get_arg_type(p.attribute)}, ");
              print(get_typecode(p.idltype))
              if p.attribute != IDL::AST::Parameter::OUT
                print(", #{p.rubyname}]")
              else
                print(']')
              end
              pfx = ','
            end
            print(']')
          }
        end
        newln = ','
      end

      unless node.oneway
        println(newln)
        nest { printi(":result_type => #{get_typecode(node.idltype)}") }
        newln = ','
      end

      if node.raises.size > 0
        println(newln)
        nest {
          printi(':exc_list => [')
          pfx = ''
          nest {
            node.raises.each { |ex|
              println(pfx)
              pfx = ','
              printi(get_typecode(ex))
            }
            print(']')
          }
        }
      end

      println('})')

      unless node.oneway
        returns_void = (node.idltype.is_a? Type::Void)
        size = _out.size
        size += 1 unless returns_void
        printiln('_ret')
      end
    end
  end

  printiln("end #of operation #{node.rubyname}")
end

#visit_typedef(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 1019

def visit_typedef(node)
  # tc_ = node.enclosure.rubyname + '._tc_' + node.rubyname
  # typ_ = node.enclosure.rubyname + '.' + node.rubyname
  case t = node.idltype
  when Type::ScopedName
    if Type::Interface === t.resolved_type
      printiln(format('%s = %s # typedef %s', node.rubyname, t.node.scoped_rubyname, node.rubyname))
    else
      printiln(format('class %s < %s', node.rubyname, t.node.scoped_rubyname))
      nest {
        printi(format('def %s._tc; ', node.rubyname))
        print(format("@@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s',", node.rubyname, node.repository_id, node.rubyname))
        println(format('%s, self); end', get_typecode(t)))
      }
      printiln(format('end # typedef %s', node.rubyname))
    end

  when IDL::Type::Native
    printiln("class #{node.rubyname}; end  ## 'native' type");

  when Type::Any, Type::Octet,
      Type::UShort, Type::Short,
      Type::ULong, Type::Long,
      Type::ULongLong, Type::LongLong,
      Type::Boolean, Type::Char, Type::WChar,
      Type::Float, Type::Double, Type::LongDouble
    s = t.class.name.split('::') # IDL::Type::Octet -> [IDL, Type, Octet]
    s = s[s.length - 1]
    s.downcase!
    printiln(format('class %s < CORBA::_tc_%s.get_type', node.rubyname, s))
    nest {
      printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s', CORBA::_tc_%s, self); end",
                      node.rubyname, node.rubyname, node.repository_id, node.rubyname, s))
    }
    printiln(format('end # typedef %s', node.rubyname))

  when Type::String
    printiln(format('class %s < String', node.rubyname))
    nest {
      if not t.length.nil?
        printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s', CORBA::TypeCode::String.new(%d), self); end",
                        node.rubyname, node.rubyname, node.repository_id, node.rubyname, t.length))
      else
        printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s', CORBA::_tc_string, self); end",
                        node.rubyname, node.rubyname, node.repository_id, node.rubyname))
      end
    }
    printiln(format('end # typedef %s', node.rubyname))

  when Type::WString
    printiln(format('class %s < Array', node.rubyname))
    nest {
      if not t.length.nil?
        printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s', CORBA::TypeCode::WString.new(%d), self); end",
                        node.rubyname, node.rubyname, node.repository_id, node.rubyname, t.length))
      else
        printiln(format("def %s._tc; @@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s', CORBA::_tc_wstring, self); end",
                        node.rubyname, node.rubyname, node.repository_id, node.rubyname))
      end
    }
    printiln(format('end # typedef %s', node.rubyname))

  when IDL::Type::Array
    printiln(format('class %s < Array', node.rubyname))
    nest {
      printiln(format('def %s._tc', node.rubyname))
      nest {
        printiln(format("@@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s',", node.rubyname, node.repository_id, node.rubyname))
        nest { printiln(format('%s, self)', get_typecode(t))) }
      }
      printiln('end')
    }
    printiln(format('end # typedef %s', node.rubyname))

  when IDL::Type::Sequence
    case t.basetype.resolved_type
    when IDL::Type::Char, IDL::Type::Octet
      printiln(format('class %s < String', node.rubyname))
    else
      printiln(format('class %s < Array', node.rubyname))
    end
    nest {
      printiln(format('def %s._tc', node.rubyname))
      nest {
        printiln(format("@@tc_%s ||= CORBA::TypeCode::Alias.new('%s', '%s',", node.rubyname, node.repository_id, node.rubyname))
        nest { printiln(format('%s, self)', get_typecode(t))) }
      }
      printiln('end')
    }
    printiln(format('end # typedef %s', node.rubyname))

  when IDL::Type::Object
    printiln(format("%s = CORBA::Object # typedef %s\n", node.rubyname, node.rubyname))

  else
    raise "unsupported typedef for #{t.class.name}."
  end
end

#visit_valuebox(node) ⇒ Object 



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# File 'lib/ridlbe/ruby/walker.rb', line 472

def visit_valuebox(node)
  println
  name = node.rubyname
  printiln("class #{name}")
  nest {
    printiln('include CORBA::Portable::BoxedValueBase')
    println
    printiln("TRUNCATABLE_IDS = [ '#{node.repository_id}' ].freeze")
    println
    printiln(format('def %s._tc', node.rubyname))
    nest {
      printiln(format("@@tc_%s ||= CORBA::TypeCode::Valuebox.new('%s'.freeze, '%s',",
                      node.rubyname, node.repository_id, node.rubyname))
      printiln("   #{get_typecode(node.boxed_type)}, self)")
    }
    printiln('end')
    printiln('self._tc  # register typecode');
    printiln('attr_accessor :value')
    printiln('def initialize(val = nil); @value = val; end')
  }
  printiln("end #of valuebox #{name}")
  println
end