/* 
 * tclProc.c --
 *
 *	This file contains routines that implement Tcl procedures,
 *	including the "proc" and "uplevel" commands.
 *
 * Copyright (c) 1987-1993 The Regents of the University of California.
 * Copyright (c) 1994-1998 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclProc.c,v 1.68 2004/12/14 21:11:47 msofer Exp $
 * RCS: @(#) $Id: tclProc.c,v 1.69 2004/12/15 20:44:41 msofer Exp $
 */

#include "tclInt.h"
#include "tclCompile.h"

/*
 * Prototypes for static functions in this file

				  * invoked. */
    int objc;			 /* Count of number of arguments to this
				  * procedure. */
    Tcl_Obj *CONST objv[];	 /* Argument value objects. */
{
    register Proc *procPtr = (Proc *) clientData;
    Namespace *nsPtr = procPtr->cmdPtr->nsPtr;
    CallFrame frame;
    CallFrame *framePtr, **framePtrPtr;
    register CallFrame *framePtr = &frame;
    register Var *varPtr;
    register CompiledLocal *localPtr;
    char *procName;
    int nameLen, localCt, numArgs, argCt, i, imax, result;

    /*
     * This procedure generates an array "compiledLocals" that holds the

     * Set up and push a new call frame for the new procedure invocation.
     * This call frame will execute in the proc's namespace, which might
     * be different than the current namespace. The proc's namespace is
     * that of its command, which can change if the command is renamed
     * from one namespace to another.
     */

    framePtrPtr = &framePtr;
    result = Tcl_PushCallFrame(interp, (Tcl_CallFrame *) framePtr,
    result = TclPushStackFrame(interp, (Tcl_CallFrame **) framePtrPtr,
	    (Tcl_Namespace *) nsPtr, FRAME_IS_PROC);

    if (result != TCL_OK) {
	return result;
    }

    framePtr->objc = objc;

    /*
     * Pop and free the call frame for this procedure invocation, then
     * free the compiledLocals array if malloc'ed storage was used.
     */

    procDone:
    Tcl_PopCallFrame(interp);
    TclPopStackFrame(interp);
    if (compiledLocals != localStorage) {
	ckfree((char *) compiledLocals);
    }
    return result;
#undef NUM_LOCALS
}


 				 * in the context of this procedure.) */
    Namespace *nsPtr;		/* Namespace containing procedure. */
    CONST char *description;	/* string describing this body of code. */
    CONST char *procName;	/* Name of this procedure. */
{
    Interp *iPtr = (Interp*)interp;
    int result;
    Tcl_CallFrame frame;
    Tcl_CallFrame *framePtr;
    Proc *saveProcPtr;
    ByteCode *codePtr = (ByteCode *) bodyPtr->internalRep.otherValuePtr;

    /*
     * If necessary, compile the procedure's body. The compiler will
     * allocate frame slots for the procedure's non-argument local
     * variables. If the ByteCode already exists, make sure it hasn't been

 	 *   proper namespace context, so that the byte codes are
 	 *   compiled in the appropriate class context.
 	 */

 	saveProcPtr = iPtr->compiledProcPtr;
 	iPtr->compiledProcPtr = procPtr;

 	result = Tcl_PushCallFrame(interp, &frame,
 	result = TclPushStackFrame(interp, &framePtr,
		(Tcl_Namespace*)nsPtr, /* isProcCallFrame */ 0);

 	if (result == TCL_OK) {
	    result = tclByteCodeType.setFromAnyProc(interp, bodyPtr);
	    Tcl_PopCallFrame(interp);
	    TclPopStackFrame(interp);
	}

 	iPtr->compiledProcPtr = saveProcPtr;

 	if (result != TCL_OK) {
 	    if (result == TCL_ERROR) {
		Tcl_Obj *errorLine = Tcl_NewIntObj(interp->errorLine);