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Tcl.h

/*
 * Copyright (c) 1993-1994 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and the Network Research Group at
 *      Lawrence Berkeley Laboratory.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * @(#) $Header: Tcl.h,v 1.4 96/03/16 13:14:34 van Exp $ (LBL)
 */

#ifndef vic_Tcl_h
#define vic_Tcl_h

#include "config.h"
#include <string.h>
#include <tcl.h>

struct Tk_Window_;

class Tcl {
    public:
      /* constructor should be private but SGIs C++ compiler complains*/
      Tcl();
      static void init(const char* application);
      static void init(Tcl_Interp*, const char* application);
      static inline Tcl& instance() { return (instance_); }
      inline int dark() const { return (tcl_ == 0); }
      inline Tcl_Interp* interp() const { return (tcl_); }
      inline char* result() const { return (tcl_->result); }
      inline void result(const char* p) { tcl_->result = (char*)p; }
      void resultf(const char* fmt, ...);
      inline void CreateCommand(const char* cmd, Tcl_CmdProc* cproc,
                          ClientData cd = 0,
                          Tcl_CmdDeleteProc* dproc = 0) {
            Tcl_CreateCommand(tcl_, (char*)cmd, cproc, cd, dproc);
      }
      inline void CreateCommand(Tcl_CmdProc* cproc,
                          ClientData cd = 0,
                          Tcl_CmdDeleteProc* dproc = 0) {
            Tcl_CreateCommand(tcl_, buffer_, cproc, cd, dproc);
      }
      inline void DeleteCommand(const char* cmd) {
            Tcl_DeleteCommand(tcl_, (char*)cmd);
      }
      inline void EvalFile(const char* file) {
            if (Tcl_EvalFile(tcl_, (char*)file) != TCL_OK)
                  error(file);
      }
      inline char* var(const char* varname, int flags = TCL_GLOBAL_ONLY) {
            return (Tcl_GetVar(tcl_, (char*)varname, flags));
      }
      /*
       * Hooks for invoking the tcl interpreter:
       *  eval(char*) - when string is in writable store
       *  evalc() - when string is in read-only store (e.g., string consts)
       *  evalf() - printf style formatting of command
       * Or, write into the buffer returned by buffer() and
       * then call eval(void).
       */
      void eval(char* s);
      void evalc(const char* s);
      void eval();
      char* buffer() { return (bp_); }
      /*
       * This routine used to be inlined, but SGI's C++ compiler
       * can't hack stdarg inlining.  No big deal here.
       */
      void evalf(const char* fmt, ...);

      inline struct Tk_Window_* tkmain() const { return (tkmain_); }
      inline void tkmain(struct Tk_Window_* w) { tkmain_ = w; }
      void add_option(const char* name, const char* value);
      void add_default(const char* name, const char* value);
      const char* attr(const char* attr) const;
      const char* application() const { return (application_); }
      inline const char* rds(const char* a, const char* fld) const {
            return (Tcl_GetVar2(tcl_, (char*)a, (char*)fld,
                            TCL_GLOBAL_ONLY));
      }
    private:
      void error(const char*);

      static Tcl instance_;
      Tcl_Interp* tcl_;
      Tk_Window_* tkmain_;
      char* bp_;
      const char* application_;
      char buffer_[4096];
};

class TclObject {
    public:
      virtual ~TclObject();
      static TclObject* lookup(const char* name);
      inline const char* name() { return (name_); }
      static void define();
      virtual void reset();
      void class_name(const char*);
      /* make this public for Sun's compiler */
      static int callback(ClientData, Tcl_Interp*, int ac, char** av);
      static void reset_all();
    protected:
      TclObject(const char* name = 0);
      virtual int command(int argc, const char*const* argv);
      void setproc(const char* proc);
      virtual void inception();
    private:
      static int id_;
      static TclObject* all_;
      char* name_;
      char* class_name_;
      TclObject* next_;
};

class Matcher {
    public:
      static TclObject* lookup(const char* classname, const char* id);
    protected:
      Matcher(const char* classname);
      virtual TclObject* match(const char* id) = 0;
    private:
      static Matcher* all_;
      Matcher* next_;
      const char* classname_;
};

class EmbeddedTcl {
    public:
      EmbeddedTcl(int pass, const char* code);
      static void init();
    private:
      static int makepass(int pass);

      const char* code_;
      int pass_;
      EmbeddedTcl* next_;
      static EmbeddedTcl* all_;
};

#endif

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