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// This file is part of PUMA.
// Copyright (C) 1999-2003 The PUMA developer team.
//
// 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
#ifndef __Introducer_h__
#define __Introducer_h__
// Class that is used for introductions during a parser run.
// The semantics object has a reference to an Introducer and uses
// the interface at some well defined (join) points.
#include "Puma/ACIntroducer.h"
using namespace Puma;
#include <set>
using std::set;
#include <list>
using std::list;
#include <map>
using std::map;
namespace Puma {
class CT_ClassDef;
class CT_Program;
class CCParser;
class PreprocessorParser;
class CClassInfo;
class TokenProvider;
class TokenStream;
}
class IncludeGraph;
class CodeWeaver;
class JPP_Class;
class JPL_Class;
class Plan;
class ModelBuilder;
class Introducer : public ACIntroducer {
Plan &_plan;
CodeWeaver &_code_weaver;
CCParser &_parser;
ModelBuilder &_jpm;
int _intro_level;
PreprocessorParser *_cpp;
IncludeGraph &_ig;
set<const Unit*> _included_aspect_headers;
list<CTree*> _ah_trees;
typedef map<CClassInfo*,JPL_Class*> TargetMap;
TargetMap _targets;
list<TokenProvider*> _token_providers;
list<TokenStream*> _token_streams;
// find a member that is/must be link-once (global) code
static CObjectInfo *link_once_object (CClassInfo *ci);
// check whether an object was introduced
static bool is_intro (CObjectInfo *obj);
// parse code that shall be introduced
CTree *parse (list<Unit*> units, CTree *(CCSyntax::*rule)(),
const char *expected_id, ErrorStream &err);
// checks if an attribute that us returned by the parser is an attribute
// in the sense of the AspectC++ introspection mechnism
bool is_attribute (CAttributeInfo *obj);
public:
// Contructor: every Introducer knows the parser
Introducer (Plan &pl, CodeWeaver &cw, CCParser &p, ModelBuilder &jpm,
IncludeGraph &ig) : _plan (pl), _code_weaver (cw), _parser (p), _jpm (jpm),
_intro_level (0), _cpp (0), _ig (ig) {}
// Destructor: release all allocated resources
~Introducer ();
// called when a new class/union/struct/aspect is created, current scope
// is the global scope
virtual void class_before (CT_ClassDef*);
// called when a new class/union/struct/aspect is created
virtual void class_begin (CT_ClassDef*);
// called when a new class/union/struct/aspect definition ends
// (still in the class scope)
virtual void class_end (CT_ClassDef*);
// called after the parser tried to parse a base clause
virtual void base_clause_end (CT_ClassDef*, Token*);
// called after the program has been parsed completely
virtual void trans_unit_end (CT_Program *);
// get the list of aspect header syntax trees
list<CTree*> &ah_trees () { return _ah_trees; }
private:
// check in the plan if the current class needs an introduction
JPP_Class *plan_lookup (CClassInfo *ci);
// create the weaving plan for a given class
JPP_Class *create_plan (CClassInfo *ci);
// insert introspection code
// * at the end of class definitions, after AspectC++ introductions
void insert_introspection_code (CT_ClassDef *cd);
// manage the intro nesting level and the _cpp pointer
void enter ();
void leave ();
};
#endif /* __Introducer_h__ */
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