diff options
Diffstat (limited to 'trunk/TAO/TAO_IDL/be/be_visitor_union/serializer_op_cs.cpp')
| -rw-r--r-- | trunk/TAO/TAO_IDL/be/be_visitor_union/serializer_op_cs.cpp | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/trunk/TAO/TAO_IDL/be/be_visitor_union/serializer_op_cs.cpp b/trunk/TAO/TAO_IDL/be/be_visitor_union/serializer_op_cs.cpp new file mode 100644 index 00000000000..9befe5a698c --- /dev/null +++ b/trunk/TAO/TAO_IDL/be/be_visitor_union/serializer_op_cs.cpp @@ -0,0 +1,468 @@ +// +// $Id$ +// + +// ============================================================================ +// +// = LIBRARY +// TAO IDL +// +// = FILENAME +// serializer_op_cs.cpp +// +// = DESCRIPTION +// Visitor generating code for TAO::DCPS::Serializer operators for unions +// +// = AUTHOR +// Scott Harris <harris_s@ociweb.com> based on code by Aniruddha Gokhale +// +// ============================================================================ + +ACE_RCSID (be_visitor_union, + serializer_op_cs, + "$Id$") + +// *************************************************************************** +// Union visitor for generating Serializer operator declarations in the client +// stubs file +// *************************************************************************** + +be_visitor_union_serializer_op_cs::be_visitor_union_serializer_op_cs ( + be_visitor_context *ctx + ) + : be_visitor_union (ctx) +{ +} + +be_visitor_union_serializer_op_cs::~be_visitor_union_serializer_op_cs (void) +{ +} + +int +be_visitor_union_serializer_op_cs::visit_union (be_union *node) +{ + // already generated and/or we are imported. Don't do anything. + if (node->cli_stub_serializer_op_gen () + || node->imported () + || node->is_local ()) + { + return 0; + } + + // Set the substate as generating code for the types defined in our scope + this->ctx_->sub_state (TAO_CodeGen::TAO_CDR_SCOPE); + + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs" + "::visit_union - " + "codegen for scope failed\n"), + -1); + } + + TAO_OutStream *os = this->ctx_->stream (); + + *os << be_nl << be_nl << "// TAO_IDL - Generated from" << be_nl + << "// " << __FILE__ << ":" << __LINE__ << be_nl << be_nl; + + //--------------------------------------------------------------- + // Set the sub state as generating code for _dcps_max_marshaled_size. + this->ctx_->sub_state(TAO_CodeGen::TAO_MAX_MARSHALED_SIZE); + + *os << "size_t _dcps_max_marshaled_size (" << be_idt << be_idt_nl + << "const " << node->name () << " &" << be_uidt_nl + << ")" << be_uidt_nl + << "{" << be_idt_nl + ; + *os << "// do not try getting the _dcps_max_marshaled_size" << be_nl + << "// doing so may produce an access violation" << be_nl + << "return 100000;" << be_uidt_nl + << "}" << be_nl << be_nl; + +/* + << "size_t max_size = 0;" << be_nl << be_nl; + + *os << "// find the maximum field size." << be_nl; + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "visit_union - " + "codegen for scope failed\n"), + -1); + } + + *os << be_nl << "// now add in the size of the discriminant" << be_nl; + switch (node->udisc_type ()) + { + case AST_Expression::EV_bool: + *os << "max_size += _dcps_max_marshaled_size (" + << "ACE_OutputCDR::from_boolean (_tao_union._d ()));" << be_nl; + break; + case AST_Expression::EV_char: + *os << "max_size += _dcps_max_marshaled_size (" + << "ACE_OutputCDR::from_char (_tao_union._d ()));" << be_nl; + + break; + case AST_Expression::EV_wchar: + *os << "max_size += _dcps_max_marshaled_size (" + << "ACE_OutputCDR::from_wchar (_tao_union._d ()));" << be_nl; + + break; + default: + // no need to cast the other dicriminant types + *os << "max_size += _dcps_max_marshaled_size (" + << "_tao_union._d ());" << be_nl; + + break; + } + + *os << be_nl + << "return max_size;" << be_uidt_nl + << "}" << be_nl << be_nl; +*/ + + //--------------------------------------------------------------- + // Set the sub state as generating code for _tao_is_bounded_size. + this->ctx_->sub_state(TAO_CodeGen::TAO_IS_BOUNDED_SIZE); + *os << "::CORBA::Boolean _tao_is_bounded_size (" << be_idt << be_idt_nl + << "const " << node->name () << " &" << be_uidt_nl + << ")" << be_uidt_nl + << "{" << be_idt_nl + ; + *os << "// Always return false for a union because " << be_nl + << "// _dcps_max_marshaled_size may produce an access violation." + << be_nl + << "return false;" << be_uidt_nl + << "}" << be_nl << be_nl; +/* + << "CORBA::Boolean is_bounded = true;" + << " // all discrimenent types are bounded" << be_nl << be_nl; + + *os << "// bounded if all branches are bounded." << be_nl; + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "visit_union - " + "codegen for scope failed\n"), + -1); + } + + *os << be_nl + << "return is_bounded;" << be_uidt_nl + << "}" << be_nl << be_nl; +*/ + + //--------------------------------------------------------------- + // Set the sub state as generating code for _dcps_find_size. + this->ctx_->sub_state(TAO_CodeGen::TAO_FIND_SIZE); + *os << be_global->stub_export_macro () + << " size_t _dcps_find_size (const " + << node->name() << "& _tao_union);" << be_nl; + + *os << "size_t _dcps_find_size (" << be_idt << be_idt_nl + << "const " << node->name () << " &_tao_union" << be_uidt_nl + << ")" << be_uidt_nl + << "{" << be_idt_nl + << "// all union discriminents are fixed size" + << "so OK to use _dcps_max_marshaled_size" << be_nl + << "size_t result = "; + + switch (node->udisc_type ()) + { + case AST_Expression::EV_bool: + *os << "_dcps_max_marshaled_size (::ACE_OutputCDR::from_boolean (_tao_union._d ()));" << be_nl; + break; + case AST_Expression::EV_char: + *os << "_dcps_max_marshaled_size (::ACE_OutputCDR::from_char (_tao_union._d ()));" << be_nl; + break; + case AST_Expression::EV_wchar: + *os << "_dcps_max_marshaled_size (::ACE_OutputCDR::from_wchar (_tao_union._d ()));" << be_nl; + break; + default: + *os << "_dcps_max_marshaled_size (_tao_union._d ());" << be_nl; + break; + } + + *os << be_nl + << "switch (_tao_union._d ())" << be_nl + << "{" << be_idt; + + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "visit_union - " + "codegen for scope failed\n"), + -1); + } + + // If there is no explicit default case, but there + // is an implicit one, and the discriminant is an enum, + // we need this to avert warnings in some compilers that + // not all case values are included. If there is no + // implicit default case, or the discriminator is not + // an enum, this does no harm. + if (node->gen_empty_default_label ()) + { + *os << be_nl << "default:" << be_idt_nl; + *os << "break;"<< be_uidt; + } + + *os << be_uidt << be_uidt_nl << "}" << be_nl << be_nl + << "return result;" << be_uidt_nl + << "}" << be_nl << be_nl; + + //--------------------------------------------------------------- + // Set the sub state as generating code for the output operator. + this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_OUTPUT); + + *os << "::CORBA::Boolean operator<< (" << be_idt << be_idt_nl + << "TAO::DCPS::Serializer &strm," << be_nl + << "const " << node->name () << " &_tao_union" << be_uidt_nl + << ")" << be_uidt_nl + << "{" << be_idt_nl; + + switch (node->udisc_type ()) + { + case AST_Expression::EV_bool: + *os << "::ACE_OutputCDR::from_boolean tmp (_tao_union._d ());" << be_nl + << "if ( !(strm << tmp) )" << be_idt_nl; + + break; + case AST_Expression::EV_char: + *os << "::ACE_OutputCDR::from_char tmp (_tao_union._d ());" << be_nl + << "if ( !(strm << tmp) )" << be_idt_nl; + + break; + case AST_Expression::EV_wchar: + *os << "::ACE_OutputCDR::from_wchar tmp (_tao_union._d ());" << be_nl + << "if ( !(strm << tmp) )" << be_idt_nl; + + break; + default: + *os << "if ( !(strm << _tao_union._d ()) )" << be_idt_nl; + + break; + } + + *os << "{" << be_idt_nl + << "return 0;" << be_uidt_nl + << "}" << be_uidt_nl << be_nl + << "::CORBA::Boolean result = 1;" << be_nl << be_nl + << "switch (_tao_union._d ())" << be_nl + << "{" << be_idt; + + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "visit_union - " + "codegen for scope failed\n"), + -1); + } + + // If there is no explicit default case, but there + // is an implicit one, and the discriminant is an enum, + // we need this to avert warnings in some compilers that + // not all case values are included. If there is no + // implicit default case, or the discriminator is not + // an enum, this does no harm. + if (node->gen_empty_default_label ()) + { + *os << be_nl << "default:" << be_idt_nl; + *os << "break;"<< be_uidt; + } + + *os << be_uidt_nl << "}" << be_nl << be_nl + << "return result;" << be_uidt_nl + << "}" << be_nl << be_nl; + + //--------------------------------------------------------------- + // Set the substate as generating code for the input operator. + this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_INPUT); + *os << "::CORBA::Boolean operator>> (" << be_idt << be_idt_nl + << "TAO::DCPS::Serializer &strm," << be_nl + << node->name () << " &_tao_union" << be_uidt_nl + << ")" << be_uidt_nl + << "{" << be_idt_nl; + + be_type* disc_type = + be_type::narrow_from_decl (node->disc_type ()); + + // Generate a temporary to store the discriminant + *os << disc_type->full_name () + << " " << "_tao_discriminant;" << be_nl; + + switch (node->udisc_type ()) + { + case AST_Expression::EV_bool: + *os << "::ACE_InputCDR::to_boolean tmp (_tao_discriminant);" << be_nl + << "if ( !(strm >> tmp) )" << be_idt_nl; + + break; + case AST_Expression::EV_char: + *os << "::ACE_InputCDR::to_char tmp (_tao_discriminant);" << be_nl + << "if ( !(strm >> tmp) )" << be_idt_nl; + + break; + case AST_Expression::EV_wchar: + *os << "::ACE_InputCDR::to_wchar tmp (_tao_discriminant);" << be_nl + << "if ( !(strm >> tmp) )" << be_idt_nl; + + break; + default: + *os << "if ( !(strm >> _tao_discriminant) )" << be_idt_nl; + + break; + } + + *os << "{" << be_idt_nl + << "return 0;" << be_uidt_nl + << "}" << be_uidt_nl << be_nl + << "::CORBA::Boolean result = 1;" << be_nl << be_nl + << "switch (_tao_discriminant)" << be_nl + << "{" << be_idt; + + if (this->visit_scope (node) == -1) + { + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "visit_union - " + "codegen for scope failed\n"), + -1); + } + + // If there is no explicit default case, but there + // is an implicit one, and the discriminant is an enum, + // we need this to avert warnings in some compilers that + // not all case values are included. If there is no + // implicit default case, or the discriminator is not + // an enum, this does no harm. + if (node->gen_empty_default_label ()) + { + *os << be_nl; + *os << "default:" << be_idt_nl; + *os << "_tao_union._d (_tao_discriminant);" << be_nl; + *os << "break;" << be_uidt; + } + + *os << be_uidt_nl + << "}" << be_nl << be_nl + << "return result;" << be_uidt_nl + << "}"; + + node->cli_stub_serializer_op_gen (1); + return 0; +} + +int +be_visitor_union_serializer_op_cs::pre_process (be_decl *bd) +{ + switch (this->ctx_->sub_state ()) + { + case TAO_CodeGen::TAO_CDR_SCOPE: + case TAO_CodeGen::TAO_MAX_MARSHALED_SIZE: + case TAO_CodeGen::TAO_IS_BOUNDED_SIZE: + return 0; + break; + + case TAO_CodeGen::TAO_FIND_SIZE: + case TAO_CodeGen::TAO_CDR_OUTPUT: + case TAO_CodeGen::TAO_CDR_INPUT: + { + // Enum val nodes are added just to help check reference + // clashes, since an enum declared in our scope is not itself + // a scope. + if (bd->node_type () == AST_Decl::NT_enum_val) + { + return 0; + } + + TAO_OutStream *os = this->ctx_->stream (); + + be_union_branch* b = + be_union_branch::narrow_from_decl (bd); + + *os << be_nl; + + for (unsigned long i = 0; i < b->label_list_length (); ++i) + { + // check if we are printing the default case + if (b->label (i)->label_kind () == AST_UnionLabel::UL_default) + { + *os << "default:"; + } + else + { + *os << "case "; + + b->gen_label_value (os, i); + + *os << ":"; + } + + if (i == (b->label_list_length () - 1)) + { + *os << be_idt_nl; + } + else + { + *os << be_nl; + } + } + + *os << "{" << be_idt_nl; + } + break; + default: + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "pre_process - " + "bad sub_state.\n"), + -1); + } + + return 0; +} + +int +be_visitor_union_serializer_op_cs::post_process (be_decl *bd) +{ + switch (this->ctx_->sub_state ()) + { + case TAO_CodeGen::TAO_CDR_SCOPE: + case TAO_CodeGen::TAO_MAX_MARSHALED_SIZE: + case TAO_CodeGen::TAO_IS_BOUNDED_SIZE: + return 0; + break; + + case TAO_CodeGen::TAO_FIND_SIZE: + case TAO_CodeGen::TAO_CDR_OUTPUT: + case TAO_CodeGen::TAO_CDR_INPUT: + { + + if (bd->node_type () == AST_Decl::NT_enum_val) + { + return 0; + } + + TAO_OutStream *os = this->ctx_->stream (); + + *os << be_uidt_nl << "}" << be_nl + << "break;" << be_uidt; + + } + break; + default: + ACE_ERROR_RETURN ((LM_ERROR, + "(%N:%l) be_visitor_union_serializer_op_cs::" + "pre_process - " + "bad sub_state.\n"), + -1); + } + + return 0; +} |