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// This file is part of the AspectC++ compiler 'ac++'.
// Copyright (C) 1999-2003 The 'ac++' developers (see aspectc.org)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free
// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
// MA 02111-1307 USA
#include "AdviceInfo.h"
#include "AspectInfo.h"
#include "Binding.h"
#include "BackEndProblems.h"
#include <string.h>
#include <sstream>
using std::ostringstream;
#include "Puma/CSemDatabase.h"
#include "Puma/CArgumentInfo.h"
AdviceInfo::AdviceInfo (AspectInfo &ai, JPL_AdviceCode &c) :
_aspect_info (ai), _aspect (ai.loc ()), _code (c) {}
void AdviceInfo::gen_invocation_func (ostream &out, bool def,
const BackEndProblems &bep) {
CFunctionInfo *ad_func = TI_AdviceCode::of (_code)->function ();
CStructure *ad_cls = ad_func->ClassScope ();
const ThisJoinPoint &tjp = TI_AdviceCode::of (_code)->this_join_point ();
const ThisJoinPoint &aspectof_tjp = _aspect_info.aspectof_this_join_point ();
// determine whether the invocation functions needs JoinPoint, tjp, or Bind.
bool has_context = (ad_func->Arguments () > 0);
bool type_needed = tjp.type_needed () || aspectof_tjp.type_needed () ||
has_context;
bool pointer_needed = tjp.pointer_needed () || has_context ||
aspectof_tjp.pointer_needed ();
if (type_needed) {
out << " template <class JoinPoint";
// if (has_context)
// out << ", class Binding";
out << ">" << endl;
}
ostringstream suffix;
suffix << _aspect.signature () << "_"
<< Scope ()->Name () << "_" << (name () + 1);
out << " ";
if (bep._use_always_inline)
out << "__attribute((always_inline)) ";
out << "inline void invoke_" << suffix.str () << " (";
if (pointer_needed)
out << "JoinPoint *tjp";
out << ")" << (def ? " {" : ";") << endl;
// the declaration ends here
if (!def)
return;
// generate typedefs
for (int a = 0; a < (int)ad_func->Arguments (); a++)
// out << " typedef typename Binding::template Arg<" << a << "> Arg" << a
// << ";" << endl;
out << " typedef typename JoinPoint::Binding_" << suffix.str ()
<< "::template Arg<" << a << "> Arg" << a << ";" << endl;
// generate advice call
out << " ";
CClassInfo *aspect_cls = TI_Aspect::of (aspect ())->ClassInfo ();
if (ad_cls != aspect_cls)
out << "((::" << ad_cls->QualName () << "*)";
// aspectof function
out << "::" << aspect ().signature () << "::aspectof";
// generate <JoinPoint> if necessary
if (aspectof_tjp.type_needed () && !aspectof_tjp.pointer_needed ())
out << "<JoinPoint>";
out << "(";
if (aspectof_tjp.pointer_needed ())
out << "tjp";
out << ")";
if (ad_cls != aspect_cls)
out << ")";
out << "->";
if (tjp.type_needed () && !tjp.pointer_needed())
out << "template ";
out << "__" << (name () + 1);
// generate <JoinPoint> if necessary
if (tjp.type_needed () && !tjp.pointer_needed())
out << "<JoinPoint>";
out << " (";
int nargs = 0;
if (tjp.pointer_needed()) {
out << "tjp";
nargs++;
}
for (int a = 0; a < (int)ad_func->Arguments (); a++) {
if (nargs > 0)
out << ", ";
out << "(" << *ad_func->Argument (a)->TypeInfo () << ")";
out << "Arg" << a << "::val (tjp)";
nargs++;
}
out << ");" << endl;
out << " }" << endl;
}
void AdviceInfo::gen_invocation_func_call (ostream &stmt, const char* tjp_tp,
const char *tjp_obj) {
const ThisJoinPoint &tjp = TI_AdviceCode::of (_code)->this_join_point ();
const ThisJoinPoint &aspectof_tjp = _aspect_info.aspectof_this_join_point ();
// determine whether the invocation functions needs JoinPoint or tjp
bool has_context = (TI_AdviceCode::of (_code)->function ()->Arguments () > 0);
bool type_needed = tjp.type_needed () || aspectof_tjp.type_needed () ||
has_context;
bool pointer_needed = tjp.pointer_needed () || has_context ||
aspectof_tjp.pointer_needed ();
stmt << "AC::invoke_" << _aspect.signature () << "_"
<< Scope ()->Name () << "_" << (name () + 1);
if (type_needed) {
stmt << "<" << tjp_tp;
// if (has_context) {
// string tp (tjp_tp);
// tp.erase (tp.length () - 2, tp.length ());
// stmt << ", Binding_" << tp << "_0_" << _aspect->name () << "_"
// << Scope ()->Name () << "_" << (name () + 1);
// }
stmt << ">";
}
stmt << " (";
if (pointer_needed)
stmt << tjp_obj;
stmt << ");";
}
void AdviceInfo::gen_binding_template (ostream &out, const char *jpname,
const BackEndProblems &bep) {
// later this will be passed as an argument
Binding &bind = binding ();
// no code generation if no context variables are expected
if (!bind._used)
return;
// generate the mapping of context variables to advice function arguments
out << "struct Binding_" /* << jpname << "_" */ << _aspect.signature () << "_"
<< Scope ()->Name () << "_" << (name () + 1) << " {" << endl;
out << " typedef " /* << jpname*/ << "__TJP" << " TJP;" << endl;
out << " template <int I";
if (bep._spec_scope)
out << ", int DUMMY = 0";
out << "> struct Arg {" << endl;
out << " void val (TJP *tjp) {} // for VC7" << endl;
out << " };" << endl;
CFunctionInfo *ad_func = TI_AdviceCode::of (_code)->function ();
for (int a = 0; a < (int)ad_func->Arguments (); a++) {
CTypeInfo *argtype = ad_func->Argument (a)->TypeInfo ();
int bind_index = bind.bound_to (ad_func->Argument (a));
assert (bind_index != Binding::BIND_NOT_FOUND);
out << " template <";
if (bep._spec_scope)
out << "int DUMMY";
out << "> struct Arg<" << a;
if (bep._spec_scope)
out << ", DUMMY";
out << "> {" << endl
<< " static typename TJP::";
switch (bind_index) {
case Binding::BIND_THAT:
out << "That " << (argtype->isPointer () ? "*" : "&")
<< "val (TJP *tjp) { return " << (argtype->isPointer () ? "" : "*")
<< "tjp->that (); }" << endl;
break;
case Binding::BIND_TARGET:
out << "Target " << (argtype->isPointer () ? "*" : "&")
<< "val (TJP *tjp) { return " << (argtype->isPointer () ? "" : "*")
<< "tjp->target (); }" << endl;
break;
case Binding::BIND_RESULT:
out << "Result &val (TJP *tjp) { return *tjp->result (); }" << endl;
break;
case Binding::BIND_NOT_FOUND: // already handled by assertion
break;
default: // argument
out << "template Arg<" << bind_index << ">::ReferredType &val (TJP *tjp) {"
<< " return *tjp->template arg<" << bind_index << "> (); }" << endl;
}
out << " };" << endl;
}
out << "};" << endl;
}
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