CompileNodes.h

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/*
 *      CompileNodes.h - The defintions of all the compile node types
 *
 *  Copyright (C) 2002-2003 The Pentagram 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 COMPILENODES_H
#define COMPILENODES_H

#include "llcTokens.h"

#include <string>
#include <list>

// Basic Node Class *********************************************************
class CompileNode
{
        public:
                CompileNode(const uint32 _linenum) : linenum(_linenum) {};

                virtual void print_unk(std::ostream &o)=0;
                virtual bool isA(const LLCToken &tok)=0; // check if node is of particular type
                
                const uint32 linenum;
};

// General stringy stuff *****************************************************
class CStringNode : public CompileNode
{
        public:
                CStringNode(const char * const _str, const uint32 _linenum) :
                        CompileNode(_linenum), str(_str) {};
                virtual ~CStringNode() {};

                virtual void print_unk(std::ostream &o) { o << str; };
                virtual bool isA(const LLCToken &tok) { return tok==LLC_STRING; };
                const std::string str;
};

class VarIdentNode : public CStringNode
{
        public:
                VarIdentNode(const char * const _idname, const uint32 _linenum) :
                        CStringNode(_idname, _linenum) {};
                virtual ~VarIdentNode() {};

                virtual bool isA(const LLCToken &tok) { return tok==LLC_IDENT; };

};

// Classes, functions and statements. (Oh my!) *******************************

class FuncNode : public CompileNode
{
        public:
                FuncNode(const uint32 _linenum) : CompileNode(_linenum) {};

                void print_unk(std::ostream &o) {};
                bool isA(const LLCToken &tok) { return false; }; //FIXME:!

};

class ClassNode : public CompileNode
{
        public:
                ClassNode(const uint32 _linenum) : CompileNode(_linenum) {}
                virtual ~ClassNode() {}

                void print_unk(std::ostream &o)
                {
                        o << "class ";
                        if(name!="")
                                o << name << ' ';
                }

                bool isA(const LLCToken &tok) { return tok==LLC_CLASS; };

                std::string name;
                std::list<FuncNode *> functions;
};

// Randoms... ****************************************************************
// Just general pointless classes that are 'just' tokens and aren't use for
// anything other then making parsing easier...

class FencePostNode : public CompileNode
{
        public:
                FencePostNode(const LLCToken _tok, const uint32 _linenum) :
                        CompileNode(_linenum), iTok(_tok) {};
                virtual ~FencePostNode() {};

                virtual void print_unk(std::ostream &o)
                {
                        switch(iTok)
                        {
                                case LLC_OPEN_BRACE:    o << '{'; break;
                                case LLC_CLOSE_BRACE:   o << '}'; break;
                                default:                                assert(false);
                        }
                };
                virtual bool isA(const LLCToken &tok) { return tok==iTok; };

        private:
                const LLCToken iTok;
};


#endif

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