diff options
Diffstat (limited to 'TAO/TAO_IDL/be/be_visitor_attribute.cpp')
| -rw-r--r-- | TAO/TAO_IDL/be/be_visitor_attribute.cpp | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/TAO/TAO_IDL/be/be_visitor_attribute.cpp b/TAO/TAO_IDL/be/be_visitor_attribute.cpp deleted file mode 100644 index e03095678c7..00000000000 --- a/TAO/TAO_IDL/be/be_visitor_attribute.cpp +++ /dev/null @@ -1,182 +0,0 @@ -// -// $Id$ -// - -// ============================================================================ -// -// = LIBRARY -// TAO IDL -// -// = FILENAME -// be_visitor_attribute.cpp -// -// = DESCRIPTION -// Visitors for generation of code for Attribute -// -// = AUTHOR -// Aniruddha Gokhale -// -// ============================================================================ - -#include "idl.h" -#include "idl_extern.h" -#include "be.h" - -#include "be_visitor_attribute.h" - -// Attribute gets mapped to one or possibly two operations based on whether -// it is readonly or not. The two operations "get" and "set" the value of the -// attribute. -// -// code generation for attributes is achieved by mapping an attribute node to -// a corresponding operation node. The reason is that we do not want to -// duplicate the code. However, an attribute node and an operation node have -// different interfaces. Hence we need some form of an adapter that can take us -// from an attribute node to an operation node. The following paragraph -// describes how this is accomplished. -// -// For a "get" operation on the attribute, we create an operation node with the -// same name as the attribute and a return type which is the same as the type -// of the attribute. This operation has no arguments. -// -// For a "set" operation on the attribute (if it is not readonly), we create an -// operation node with a "void" return type and an "in" parameter of the same -// type as the attribute. - -// In both cases the context will hold sufficient information to indicate that -// the operation node is really an attribute node. - -// ************************************************************************* -// primary visitor for "attribute". The context state decides the next state -// ************************************************************************* - -be_visitor_attribute::be_visitor_attribute (be_visitor_context *ctx) - : be_visitor_decl (ctx) -{ -} - -be_visitor_attribute::~be_visitor_attribute (void) -{ -} - -int -be_visitor_attribute::visit_attribute (be_attribute *node) -{ - TAO_OutStream *os; // output stream - // be_type *bt; // type node - - os = this->ctx_->stream (); - this->ctx_->node (node); // save the node - this->ctx_->attribute (node); // save this attribute node - - be_operation *op; - - // first the "get" operation - op = new be_operation (node->field_type (), AST_Operation::OP_noflags, - node->name (), 0); - op->set_name (node->name ()); - be_visitor_context ctx (*this->ctx_); - - // this switch statement eliminates the need for different classes that have - // exactly the same code except different states. - switch (this->ctx_->state ()) - { - case TAO_CodeGen::TAO_ATTRIBUTE_CH: - ctx.state (TAO_CodeGen::TAO_OPERATION_CH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_CS: - ctx.state (TAO_CodeGen::TAO_OPERATION_CS); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_SH: - ctx.state (TAO_CodeGen::TAO_OPERATION_SH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_SS: - ctx.state (TAO_CodeGen::TAO_OPERATION_SS); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_COLLOCATED_SH: - ctx.state (TAO_CodeGen::TAO_OPERATION_COLLOCATED_SH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_COLLOCATED_SS: - ctx.state (TAO_CodeGen::TAO_OPERATION_COLLOCATED_SS); - break; - } - - be_visitor *visitor = tao_cg->make_visitor (&ctx); - if (!visitor || !op || (op->accept (visitor) == -1)) - { - delete visitor; - delete op; - ACE_ERROR_RETURN ((LM_ERROR, - "(%N:%l) be_visitor_attribute::" - "visit_attribute - " - "codegen for get_attribute failed\n"), - -1); - } - delete op; - delete visitor; - if (node->readonly ()) - return 0; // nothing else to do - - // the set method. - // the return type is "void" - be_predefined_type *rt = new be_predefined_type (AST_PredefinedType::PT_void, - new UTL_ScopedName - (new Identifier - ("void", 1, 0, I_FALSE), 0), - 0); - // argument type is the same as the attribute type - be_argument *arg = new be_argument (AST_Argument::dir_IN, - node->field_type (), - node->name (), - 0); - arg->set_name (node->name ()); - // create the operation - op = new be_operation (rt, AST_Operation::OP_noflags, - node->name (), 0); - op->set_name (node->name ()); - op->add_argument_to_scope (arg); - - ctx = *this->ctx_; - // this switch statement eliminates the need for different classes that have - // exactly the same code except different states. - switch (this->ctx_->state ()) - { - case TAO_CodeGen::TAO_ATTRIBUTE_CH: - ctx.state (TAO_CodeGen::TAO_OPERATION_CH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_CS: - ctx.state (TAO_CodeGen::TAO_OPERATION_CS); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_SH: - ctx.state (TAO_CodeGen::TAO_OPERATION_SH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_SS: - ctx.state (TAO_CodeGen::TAO_OPERATION_SS); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_COLLOCATED_SH: - ctx.state (TAO_CodeGen::TAO_OPERATION_COLLOCATED_SH); - break; - case TAO_CodeGen::TAO_ATTRIBUTE_COLLOCATED_SS: - ctx.state (TAO_CodeGen::TAO_OPERATION_COLLOCATED_SS); - break; - } - - visitor = tao_cg->make_visitor (&ctx); - if (!visitor || !op || (op->accept (visitor) == -1)) - { - delete visitor; - delete op; - delete arg; - delete rt; - ACE_ERROR_RETURN ((LM_ERROR, - "(%N:%l) be_visitor_attribute::" - "visit_attribute - " - "codegen for set_attribute failed\n"), - -1); - } - delete op; - delete visitor; - delete rt; - delete arg; - return 0; -} |