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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 <assert.h>
#include "ThisJoinPoint.h"
#include "JoinPoint.h"
#include "Naming.h"
#include "Binding.h"
#include "JPAdvice.h"
#include "JoinPointLoc.h"
#include "Puma/CTree.h"
#include "Puma/CClassInfo.h"
#include "Puma/CFunctionInfo.h"
#include "Puma/CTypeInfo.h"
#include "Puma/CArgumentInfo.h"
#include <sstream>
using std::stringstream;
using std::endl;
using std::ends;
#include <string>
using std::string;
static CClassInfo *cscope(CObjectInfo *obj) {
if (obj->QualifiedScope ())
return obj->QualifiedScope ()->ClassInfo ();
return obj->Scope ()->ClassInfo ();
}
// special setup function for bindings
void ThisJoinPoint::setup (const Binding &binding) {
_setup = true;
if (binding._used) {
_used |= (binding._this != 0) ? THAT : 0;
_used |= (binding._target != 0) ? TARGET : 0;
_used |= (binding._result != 0) ? RESULT : 0;
_used |= (binding._args.length () > 0) ? ARG : 0;
_used |= (PTR_NEEDED|TYPE_NEEDED);
}
}
void ThisJoinPoint::setup (CFunctionInfo* func) {
assert (func->Tree ()->NodeName () == CT_FctDef::NodeId ());
_setup = true;
// by starting with the second statement of the body we avoid to iterate
// through the generated argument list and the generated typedef at the
// beginning of the function
CT_CmpdStmt *body = ((CT_FctDef*)func->Tree ())->Body ();
// for (int i = 1; i < body->Entries (); i++)
// EXPERIMENT
for (int i = 0; i < body->Entries (); i++)
setup_search (func, body->Entry (i));
}
void ThisJoinPoint::setup_search (CFunctionInfo *func, CTree *node) {
CObjectInfo *obj;
CClassInfo *cls;
const char *nodename = node->NodeName ();
if (nodename == CT_SimpleName::NodeId () &&
(obj = ((CT_SimpleName*)node)->Object ())) {
if (obj->Scope ()->GlobalScope () &&
strcmp (obj->Name (), "tjp") == 0)
_used |= (PTR_NEEDED | TYPE_NEEDED);
else if (obj->Scope ()->GlobalScope () &&
strcmp (obj->Name (), "thisJoinPoint") == 0)
_used |= (PTR_NEEDED | PTR_ALIAS_NEEDED | TYPE_NEEDED);
else if (obj->Scope ()->GlobalScope () &&
strcmp (obj->Name (), "JoinPoint") == 0)
_used |= TYPE_NEEDED;
// workaround as long as calls to template functions are not resolved
if (obj->ClassScope () &&
strcmp (obj->ClassScope ()->Name (), "JoinPoint") == 0 &&
obj->FunctionInfo () && obj->FunctionInfo ()->Arguments () == 0 &&
strcmp (obj->Name (), "arg") == 0) {
_used |= ARG;
}
}
if (nodename == CT_CallExpr::NodeId () &&
(obj = ((CT_CallExpr*)node)->Object ()) &&
(cls = obj->DefObject ()->Scope ()->ClassInfo ()) &&
strcmp (cls->QualName (), "JoinPoint") == 0) {
const char *field = obj->Name ();
if (strcmp (field, "signature") == 0)
_used |= SIGNATURE;
else if (strcmp (field, "args") == 0)
_used |= ARGS;
else if (strcmp (field, "arg") == 0)
_used |= ARG;
else if (strcmp (field, "argtype") == 0)
_used |= ARG_TYPE;
else if (strcmp (field, "type") == 0)
_used |= TYPE;
else if (strcmp (field, "id") == 0)
_used |= ID;
else if (strcmp (field, "resulttype") == 0)
_used |= RESULT_TYPE;
else if (strcmp (field, "that") == 0)
_used |= THAT;
else if (strcmp (field, "target") == 0)
_used |= TARGET;
else if (strcmp (field, "result") == 0)
_used |= RESULT;
else if (strcmp (field, "jptype") == 0)
_used |= JP_TYPE;
else if (strcmp (field, "action") == 0)
_used |= ACTION;
else if (strcmp (field, "wrapper") == 0)
_used |= WRAPPER;
else if (strcmp (field, "proceed") == 0)
_used |= PROCEED;
}
for (int s = 0; s < node->Sons (); s++)
setup_search (func, node->Son (s));
}
void ThisJoinPoint::make_result_type(ostream &out, CTypeInfo *type,
const char *rt_name) {
if (type->isVoid () || type->isUndefined ())
out << "void " << rt_name;
else if (type->isAddress ()) {
string ptr_name = "*";
ptr_name += rt_name;
type->BaseType ()->TypeText (out, ptr_name.c_str (), true, true);
}
else
type->TypeText (out, rt_name, true, true);
}
void ThisJoinPoint::gen_tjp_struct (ostream &code, JPL_Code *loc,
BackEndProblems &bep, int depth) const {
// the level 0 struct -> contains all the data and types
code << "struct ";
Naming::tjp_struct (code, loc, depth);
if (depth > 0) {
// the level N > 0 structs -> are derived from level N - 1
code << " : ";
Naming::tjp_struct (code, loc, depth - 1);
}
else {
// the level N == 0 structs are derived from AC::Action, if action() used
if (useAction())
code << " : AC::Action";
}
code << " {" << endl;
stringstream types, data, fct;
// start: type definitions --------------------------------------------------
// Result type
types << " typedef ";
make_result_type (types, loc->result_type ().type_info (), "Result");
types << ";" << endl;
// that type
types << " typedef ";
((JPL_Code*)loc)->that_type ()->TypeText (types, "That", true, true);
types << ";" << endl;
// target type
types << " typedef ";
((JPL_Code*)loc)->target_type ()->TypeText (types, "Target", true, true);
types << ";" << endl;
// join point id and type;
types << " static const int JPID = " << loc->id () << ";" << endl;
types << " static const AC::JPType JPTYPE = (AC::JPType)" << loc->type ()
<< ";" << endl;
// result type
types << " struct Res {" << endl;
CTypeInfo *restype = loc->result_type ().type_info ();
if (restype->isUndefined ()) {
types << " typedef void Type;" << endl;
types << " typedef void ReferredType;" << endl;
}
else {
types << " typedef ";
restype->TypeText (types, "Type", true, true);
types << ";" << endl;
CTypeInfo *refrestype = restype;
if (refrestype->isAddress ())
refrestype = restype->BaseType ();
types << " typedef ";
refrestype->TypeText (types, "ReferredType", true, true);
types << ";" << endl;
}
types << " };" << endl;
// argument types
unsigned arg_count = loc->arg_count ();
types << " enum { ARGS = " << arg_count << " };" << endl;
types << " template <int I";
if (bep._spec_scope)
types << ", int DUMMY = 0";
types << "> struct Arg {" << endl;
types << " typedef void Type;" << endl;
types << " typedef void ReferredType;" << endl;
types << " };" << endl;
for (unsigned a = 0; a < arg_count; a++) {
CTypeInfo *argtype = loc->arg_type (a).type_info ();
types << " template <";
if (bep._spec_scope)
types << "int DUMMY";
types << "> struct Arg<" << a;
if (bep._spec_scope)
types << ", DUMMY";
types << "> {" << endl;
types << " typedef ";
argtype->TypeText (types, "Type", true, true);
types << ";" << endl;
CTypeInfo *refargtype = argtype;
if (refargtype->isAddress ())
refargtype = argtype->BaseType ();
types << " typedef ";
refargtype->TypeText (types, "ReferredType", true, true);
types << ";" << endl;
types << " };" << endl;
}
// begin of static data -----------------------------------------------------
if (signature ()) {
fct << " inline static const char *signature () { return \"";
fct << loc->signature () << "\";}" << endl;
}
if (args ()) {
fct << " inline static const int args () { return ";
fct << arg_count << ";";
fct << " }" << endl;
}
if (type()) {
fct << " inline static AC::Type type() { return ";
if (loc->tjp_type()) {
fct << "\"";
loc->tjp_type()->TypeInfo()->Mangled(fct);
fct << "\";";
} else fct << "\"<unknown type>\";";
fct << "}" << endl;
}
if (id()) {
fct << " inline static unsigned int id() { return JPID; }" << endl;
}
if (resulttype()) {
fct << " inline static AC::Type resulttype() {return ";
if (!loc->result_type ().type_info ()->isUndefined ()) {
fct << "\"";
loc->result_type().type_info()->Mangled(fct);
fct << "\";";
} else fct << "\"<unknown signature>\";";
fct << "}" << endl;
}
if (jptype()) {
fct << " inline static AC::JPType jptype() { return JPTYPE; }" << endl;
}
if (argtype()) {
fct << " inline static AC::Type const argtype(unsigned i) {" << endl;
if (arg_count > 0) {
fct << " static AC::Type const type[" << arg_count << "] = {";
for (unsigned i = 0; i < arg_count; i++) {
if (i > 0) fct << ", ";
fct << "\"";
loc->arg_type (i).type_info ()->Mangled(fct);
fct << "\"";
}
fct << "};" << endl;
fct << " return type[i];" << endl;
fct << " }" << endl;
} else {
fct << " return \"\";" << endl;
fct << " }" << endl;
}
}
// begin of dynamic data ----------------------------------------------------
if (arg () || useAction () || (proceed () && loc->proceed_needs_args ())) {
if (!useAction ())
data << " void **_args;" << endl;
fct << " inline void *arg (int n) {return _args[n];}" << endl;
fct << " template <int I> typename Arg<I>::ReferredType *arg () {"
<< endl;
fct << " return (typename Arg<I>::ReferredType*)arg (I);" << endl;
fct << " }" << endl;
}
if (result() || useAction () || (proceed () && loc->proceed_needs_result ())) {
if (!useAction ())
data << " Result *_result;" << endl;
fct << " inline Result *result() {return (Result*)_result;}" << endl;
}
if (target() || useAction () || (proceed () && loc->proceed_needs_target ())) {
if (!useAction ())
data << " Target *_target;" << endl;
fct << " inline Target *target() {return (Target*)_target;}" << endl;
}
if (that() || useAction () || (proceed () && loc->proceed_needs_that ())) {
if (!useAction ())
data << " That *_that;" << endl;
fct << " inline That *that() {return (That*)_that;}" << endl;
}
if (proceed () && loc->proceed_needs_fptr ()) {
data << " void *_fptr;" << endl;
}
if (wrapper() || useAction ()) {
if (!useAction ())
data << " void (*_wrapper)(AC::Action &);" << endl;
fct << " inline void (*wrapper ())(AC::Action &) {return _wrapper;}" << endl;
}
// terminate all the strings
types << endl << ends;
data << endl << ends;
fct << endl << ends;
// add all types, attributes, and functions (on level 0)
if (depth == 0) {
code << types.str ().data ();
code << data.str ().data ();
code << fct.str ().data ();
}
// the closing bracket is *NOT* generated here -> for external extensions
}
void ThisJoinPoint::dump (ostream &out)
{
out << "ThisJoinPoint (";
out << "signature=" << (signature () ? "true" : "false");
out << ", args=" << (args () ? "true" : "false");
out << ", arg=" << (arg() ? "true" : "false");
out << ", argtype=" << (argtype() ? "true" : "false");
out << ", type=" << (type() ? "true" : "false");
out << ", id=" << (id() ? "true" : "false");
out << ", resulttype=" << (resulttype() ? "true" : "false");
out << ", that=" << (that() ? "true" : "false");
out << ", target=" << (target() ? "true" : "false");
out << ", result=" << (result() ? "true" : "false");
out << ", jptype=" << (jptype() ? "true" : "false");
out << ", action=" << (action() ? "true" : "false");
out << ", proceed=" << (proceed() ? "true" : "false");
out << ")" << endl;
}
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