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|
//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// attribute.cpp
//
// = DESCRIPTION
// Visitor for generation of code for Attribute
//
// = AUTHOR
// Aniruddha Gokhale
//
// ============================================================================
ACE_RCSID (be_visitor_attribute,
attribute,
"$Id$")
// 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)
{
this->ctx_->node (node);
this->ctx_->attribute (node);
// first the "get" operation
be_operation get_op (node->field_type (),
AST_Operation::OP_noflags,
node->name (),
node->is_local (),
node->is_abstract ());
get_op.set_name ((UTL_IdList *) node->name ()->copy ());
get_op.set_defined_in (node->defined_in ());
// Get the strategy from the attribute and hand it over
// to the operation.
delete get_op.set_strategy (node->get_get_strategy ());
be_visitor_context ctx (*this->ctx_);
int status = 1;
switch (this->ctx_->state ())
{
// These two cases are the only ones that could involved a strategy.
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);
be_visitor_operation_sh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_IH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_IH);
be_visitor_operation_ih visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SS);
be_visitor_operation_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_IS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_IS);
be_visitor_operation_is visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_COLLOCATED_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_COLLOCATED_SH);
be_visitor_operation_thru_poa_collocated_sh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_COLLOCATED_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_COLLOCATED_SS);
be_visitor_operation_thru_poa_collocated_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_COLLOCATED_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_COLLOCATED_SH);
be_visitor_operation_direct_collocated_sh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_COLLOCATED_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_COLLOCATED_SS);
be_visitor_operation_direct_collocated_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_BASE_PROXY_IMPL_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_BASE_PROXY_IMPL_CH);
be_visitor_operation_base_proxy_impl_ch visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_PROXY_IMPL_XH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_PROXY_IMPL_XH);
be_visitor_operation_proxy_impl_xh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_REMOTE_PROXY_IMPL_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_REMOTE_PROXY_IMPL_CS);
be_visitor_operation_remote_proxy_impl_cs visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_PROXY_IMPL_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_PROXY_IMPL_SS);
be_visitor_operation_thru_poa_proxy_impl_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_PROXY_IMPL_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_PROXY_IMPL_SS);
be_visitor_operation_direct_proxy_impl_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SMART_PROXY_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SMART_PROXY_CH);
be_visitor_operation_smart_proxy_ch visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SMART_PROXY_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SMART_PROXY_CS);
be_visitor_operation_smart_proxy_cs visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_CH);
be_visitor_operation_interceptors_ch visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_CS);
be_visitor_operation_interceptors_cs visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_SH);
be_visitor_operation_interceptors_sh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_SS);
be_visitor_operation_interceptors_ss visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_TIE_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_TIE_SH);
be_visitor_operation_tie_sh visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_TIE_SI:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_TIE_SI);
be_visitor_operation_tie_si visitor (&ctx);
status = get_op.accept (&visitor);
break;
}
default:
// Error.
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"bad codegen state\n"),
-1);
}
if (status == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for get_attribute failed\n"),
-1);
}
else if (status == 1)
{
// Change the state depending on the kind of node strategy.
ctx.state (get_op.next_state (ctx.state ()));
be_visitor *visitor = tao_cg->make_visitor (&ctx);
if (!visitor || (get_op.accept (visitor) == -1))
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for get_attribute failed\n"),
-1);
}
delete visitor;
visitor = 0;
if (get_op.has_extra_code_generation (ctx.state ()))
{
// Change the state depending on the kind of node strategy.
ctx.state (get_op.next_state (ctx.state (), 1));
be_visitor *visitor = tao_cg->make_visitor (&ctx);
if (!visitor || (get_op.accept (visitor) == -1))
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for get_attribute failed\n"),
-1);
}
delete visitor;
visitor = 0;
}
}
// Do nothing for readonly attributes.
if (node->readonly ())
{
return 0;
}
status = 1;
// Create the set method.
Identifier id ("void");
UTL_ScopedName sn (&id,
0);
// The return type is "void".
be_predefined_type rt (AST_PredefinedType::PT_void,
&sn);
// Argument type is the same as the attribute type.
be_argument arg (AST_Argument::dir_IN,
node->field_type (),
node->name ());
arg.set_name ((UTL_IdList *) node->name ()->copy ());
// Create the operation.
be_operation set_op (&rt,
AST_Operation::OP_noflags,
node->name (),
node->is_local (),
node->is_abstract ());
set_op.set_name ((UTL_IdList *) node->name ()->copy ());
set_op.set_defined_in (node->defined_in ());
set_op.add_argument_to_scope (&arg);
// Get the strategy from the attribute and hand it over
// to the operation, thereby deleting the old one.
delete set_op.set_strategy (node->get_set_strategy ());
ctx = *this->ctx_;
status = 1;
switch (this->ctx_->state ())
{
// These two cases are the only ones that could involved a strategy.
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);
be_visitor_operation_sh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_IH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_IH);
be_visitor_operation_ih visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SS);
be_visitor_operation_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_IS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_IS);
be_visitor_operation_is visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_COLLOCATED_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_COLLOCATED_SH);
be_visitor_operation_thru_poa_collocated_sh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_COLLOCATED_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_COLLOCATED_SS);
be_visitor_operation_thru_poa_collocated_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_COLLOCATED_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_COLLOCATED_SH);
be_visitor_operation_direct_collocated_sh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_COLLOCATED_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_COLLOCATED_SS);
be_visitor_operation_direct_collocated_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_BASE_PROXY_IMPL_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_BASE_PROXY_IMPL_CH);
be_visitor_operation_base_proxy_impl_ch visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_PROXY_IMPL_XH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_PROXY_IMPL_XH);
be_visitor_operation_proxy_impl_xh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_REMOTE_PROXY_IMPL_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_REMOTE_PROXY_IMPL_CS);
be_visitor_operation_remote_proxy_impl_cs visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_THRU_POA_PROXY_IMPL_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_THRU_POA_PROXY_IMPL_SS);
be_visitor_operation_thru_poa_proxy_impl_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_DIRECT_PROXY_IMPL_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_DIRECT_PROXY_IMPL_SS);
be_visitor_operation_direct_proxy_impl_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SMART_PROXY_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SMART_PROXY_CH);
be_visitor_operation_smart_proxy_ch visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_SMART_PROXY_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_SMART_PROXY_CS);
be_visitor_operation_smart_proxy_cs visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_CH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_CH);
be_visitor_operation_interceptors_ch visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_CS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_CS);
be_visitor_operation_interceptors_cs visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_SH);
be_visitor_operation_interceptors_sh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_INTERCEPTORS_SS:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_INTERCEPTORS_SS);
be_visitor_operation_interceptors_ss visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_TIE_SH:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_TIE_SH);
be_visitor_operation_tie_sh visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
case TAO_CodeGen::TAO_ATTRIBUTE_TIE_SI:
{
ctx.state (TAO_CodeGen::TAO_OPERATION_TIE_SI);
be_visitor_operation_tie_si visitor (&ctx);
status = set_op.accept (&visitor);
break;
}
default:
// Error.
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"bad codegen state\n"),
-1);
}
if (status == 0)
{
return 0;
}
else if (status == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for get_attribute failed\n"),
-1);
}
// Change the state depending on the kind of node strategy
ctx.state (set_op.next_state (ctx.state ()));
be_visitor *visitor = tao_cg->make_visitor (&ctx);
if (!visitor || (set_op.accept (visitor) == -1))
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for set_attribute failed\n"),
-1);
}
delete visitor;
visitor = 0;
if (set_op.has_extra_code_generation (ctx.state ()))
{
// Change the state depending on the kind of node strategy
ctx.state (set_op.next_state (ctx.state (), 1));
visitor = tao_cg->make_visitor (&ctx);
if (!visitor || (set_op.accept (visitor) == -1))
{
delete visitor;
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_attribute::"
"visit_attribute - "
"codegen for set_attribute failed\n"),
-1);
}
delete visitor;
visitor = 0;
}
return 0;
}
|
