diff options
Diffstat (limited to 'TAO/TAO_IDL/be/be_visitor_valuetype/valuetype_obv_ch.cpp')
| -rw-r--r-- | TAO/TAO_IDL/be/be_visitor_valuetype/valuetype_obv_ch.cpp | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/TAO/TAO_IDL/be/be_visitor_valuetype/valuetype_obv_ch.cpp b/TAO/TAO_IDL/be/be_visitor_valuetype/valuetype_obv_ch.cpp new file mode 100644 index 00000000000..3a04f825b06 --- /dev/null +++ b/TAO/TAO_IDL/be/be_visitor_valuetype/valuetype_obv_ch.cpp @@ -0,0 +1,313 @@ + +// +// $Id$ +// + +// ============================================================================ +// +// = LIBRARY +// TAO IDL +// +// = FILENAME +// valuetype_obv__ch.cpp +// +// = DESCRIPTION +// Visitor generating code for Valuetypes in the client header +// OBV_ class +// (see C++ mapping OMG 20.17) +// +// = AUTHOR +// Torsten Kuepper <kuepper2@lfa.uni-wuppertal.de>, +// based on interface_ch.cpp from Aniruddha Gokhale +// +// ============================================================================ + +ACE_RCSID (be_visitor_valuetype, + valuetype_obv_ch, + "$Id$") + +// ****************************************************** +// Valuetype visitor for client header +// ****************************************************** + +be_visitor_valuetype_obv_ch::be_visitor_valuetype_obv_ch ( + be_visitor_context *ctx + ) + : be_visitor_valuetype (ctx) +{ +} + +be_visitor_valuetype_obv_ch::~be_visitor_valuetype_obv_ch (void) +{ +} + + +// OBV_ class must be in OBV_ namespace. +int +be_visitor_valuetype_obv_ch::visit_valuetype (be_valuetype *node) +{ + // Only visit non-abstract non-imported valuetype. + if (node->is_abstract () || node->imported ()) + { + return 0; + } + + TAO_OutStream *os = this->ctx_->stream (); + + *os << be_nl << be_nl << "// TAO_IDL - Generated from" << be_nl + << "// " << __FILE__ << ":" << __LINE__ ; + + // OBV_ class maps only to a typedef if we are optimizing accessors. + if (node->opt_accessor ()) + { + *os << be_nl << be_nl << "typedef " << node->full_name () << " "; + + if (!node->is_nested ()) + { + *os << "OBV_"; + } + + *os << node->local_name () << ";" << be_nl; + } + else + { + // STEP 1: Generate the class name and the class name we inherit. + os->gen_ifdef_macro (node->flat_name (), "_OBV"); + + *os << be_nl << be_nl << "// OBV_ class" << be_nl; + *os << "class " << be_global->stub_export_macro() << " ";; + + if (!node->is_nested()) + { + *os << "OBV_"; + } + + *os << node->local_name () << be_idt_nl + << ": public virtual " + << node->full_name (); + + // STEP 1a (about which previous implementer forgot ): + // Generate inheritance from corresponding OBV_ classes. + +//------>>> + + // Here we need to be careful. There are few cases to consider: + // + // (1) We have VT with concrete factory and no inhereted VT with + // concrete factory then we need to mix-in RefCounter + // + // (2) We have VT with concerete factory and inheretence from + // another (not abstract or empty abstract <would like to + // know how to go there>) then its OBV_ already has mix-in + // + // (3) We have VT that supports an abstract interface. In this case, + // we will add implementations of _add_ref and _remove_ref that + // call this->DefaultValueRefCountBase and so it must be mixed in + // + // (4) The rest. Don't need to bother about anything, just inherit + // whatever there is. + // + + int i = 0; + AST_Interface *inherited = 0; + + for (; i < node->n_inherits (); ++i) + { + inherited = node->inherits ()[i]; + + // We need only concrete valuetypes. + if (inherited->is_abstract ()) + { + continue; + } + + *os << "," << be_nl; + + // dump the scoped name. + *os << " public virtual OBV_"; + *os << inherited->full_name(); + } // end of for loop + + if (this->obv_need_ref_counter (node)) + { + *os << "," << be_nl; + + // dump the scoped name. + *os << " public virtual ::CORBA::DefaultValueRefCountBase"; + } + + *os << be_uidt_nl; + +//------>>> + + // STEP 2: Generate the body == + + *os << "{"; + + // Generate code for the OBV_ class definition. + if (this->visit_valuetype_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_valuetype_obv_ch::" + "visit_valuetype - " + "codegen for scope failed\n"), + -1); + } + + // If we inherit from CORBA::Object and/or CORBA::AbstractBase + // (in addition to CORBA::ValueBase) we have to add these + // to avoid ambiguity. + if (node->n_supports () > 0) + { + *os << be_nl << be_nl << "// TAO_IDL - Generated from" << be_nl + << "// " << __FILE__ << ":" << __LINE__ ; + + *os << be_nl << be_nl << "virtual void _add_ref (void);" << be_nl; + *os << "virtual void _remove_ref (void);"; + } + + if (node->have_operation ()) + { + this->begin_private (); + } + else + { + this->begin_public (); + } + + *os << be_nl; + + // Default constructor. + if (! node->is_nested ()) + { + *os << "OBV_"; + } + + *os << node->local_name () << " (void);"; + + // Initializing constructor. + if (node->has_member ()) + { + *os << be_nl; + + if (! node->is_nested ()) + { + *os << "OBV_"; + } + + *os << node->local_name () << " (" << be_idt << be_idt; + + unsigned long index = 0; + this->gen_obv_init_constructor_args (node, index); + + *os << be_uidt_nl + << ");" << be_uidt; + } + + // Virtual destructor. + *os << be_nl << "virtual ~"; + + if (! node->is_nested ()) + { + *os << "OBV_"; + } + + *os << node->local_name () << " (void);"; + + // Map fields to private data. + if (!node->opt_accessor ()) + { + *os << be_nl << be_uidt_nl << "protected:" << be_idt_nl; + + *os << "virtual ::CORBA::Boolean" << be_nl + << "_tao_marshal__" << node->flat_name () + << " (TAO_OutputCDR &, TAO_ChunkInfo &) const;" << be_nl << be_nl; + + *os << "virtual ::CORBA::Boolean" << be_nl + << "_tao_unmarshal__" << node->flat_name () + << " (TAO_InputCDR &, TAO_ChunkInfo &);" << be_nl << be_nl; + + *os << "::CORBA::Boolean " + << "_tao_marshal_state (TAO_OutputCDR &, TAO_ChunkInfo &) const;" + << be_nl + << "::CORBA::Boolean " + << "_tao_unmarshal_state (TAO_InputCDR &, TAO_ChunkInfo &);" + << be_nl + << "virtual void " + << "truncation_hook (void);" + << be_uidt_nl << be_nl; + + *os << "private:" << be_idt; + + this->gen_pd (node); + } + + *os << be_nl + << "CORBA::Boolean require_truncation_;" << be_uidt_nl + << "};"; + + os->gen_endif (); + } + + return 0; +} + +int +be_visitor_valuetype_obv_ch::visit_eventtype (be_eventtype *node) +{ + return this->visit_valuetype (node); +} + +int +be_visitor_valuetype_obv_ch::visit_field (be_field *node) +{ + be_valuetype *vt = be_valuetype::narrow_from_scope (node->defined_in ()); + + if (!vt) + { + return -1; + } + + // Only in OBV_ class, if we are not optimizing accessors (and modifiers). + if (!vt->opt_accessor ()) + { + be_visitor_context ctx (*this->ctx_); + be_visitor_valuetype_field_ch visitor (&ctx); + + visitor.setenclosings ("virtual ",";"); + + if (node->accept (&visitor) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_valuetype_obv_ch::" + "visit_field - codegen failed\n"), + -1); + } + } + + return 0; +} + +void +be_visitor_valuetype_obv_ch::begin_public (void) +{ + AST_Decl::NodeType nt = this->ctx_->node ()->node_type (); + + // These types are skipped in the OBV class. + if (nt == AST_Decl::NT_attr || nt == AST_Decl::NT_op) + { + return; + } + + TAO_OutStream *os = this->ctx_->stream (); + *os << be_uidt_nl << be_nl + << "public:" << be_idt; +} + +void +be_visitor_valuetype_obv_ch::begin_private (void) +{ + TAO_OutStream *os = this->ctx_->stream (); + *os << be_uidt_nl << be_nl + << "protected:" << be_idt; +} |