diff options
Diffstat (limited to 'TAO/TAO_IDL/be/be_visitor_union/cdr_op_cs.cpp')
| -rw-r--r-- | TAO/TAO_IDL/be/be_visitor_union/cdr_op_cs.cpp | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/TAO/TAO_IDL/be/be_visitor_union/cdr_op_cs.cpp b/TAO/TAO_IDL/be/be_visitor_union/cdr_op_cs.cpp new file mode 100644 index 00000000000..59a621cf4b2 --- /dev/null +++ b/TAO/TAO_IDL/be/be_visitor_union/cdr_op_cs.cpp @@ -0,0 +1,212 @@ +// +// $Id$ +// + +// ============================================================================ +// +// = LIBRARY +// TAO IDL +// +// = FILENAME +// cdr_op_cs.cpp +// +// = DESCRIPTION +// Visitor generating code for CDR operators for unions +// +// = AUTHOR +// Aniruddha Gokhale +// +// ============================================================================ + +ACE_RCSID (be_visitor_union, + cdr_op_cs, + "$Id$") + +// *************************************************************************** +// Union visitor for generating CDR operator declarations in the client +// stubs file +// *************************************************************************** + +be_visitor_union_cdr_op_cs::be_visitor_union_cdr_op_cs ( + be_visitor_context *ctx + ) + : be_visitor_union (ctx) +{ +} + +be_visitor_union_cdr_op_cs::~be_visitor_union_cdr_op_cs (void) +{ +} + +int +be_visitor_union_cdr_op_cs::visit_union (be_union *node) +{ + // already generated and/or we are imported. Don't do anything. + if (node->cli_stub_cdr_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_cdr_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; + + *os << be_global->core_versioning_begin () << 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_OutputCDR &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 false;" << be_uidt_nl + << "}" << be_uidt_nl << be_nl + << "::CORBA::Boolean result = true;" << 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_cdr_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_InputCDR &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 false;" << be_uidt_nl + << "}" << be_uidt_nl << be_nl + << "::CORBA::Boolean result = true;" << 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_cdr_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 + << "}"; + + *os << be_global->core_versioning_end () << be_nl; + + node->cli_stub_cdr_op_gen (1); + return 0; +} |