Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr, *valueTokenPtr;
    int isScalar, localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */

    /* TODO: Consider support for compiling expanded args. */
    numWords = parsePtr->numWords;
    if (numWords == 1) {
	return TCL_ERROR;
    } else if (numWords == 2) {
	/*

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    JumpFixup jumpFixup;
    Tcl_Token *cmdTokenPtr, *resultNameTokenPtr, *optsNameTokenPtr;
    int resultIndex, optsIndex, range, dropScript = 0;
    DefineLineInformation;	/* TIP #280 */
    int depth = TclGetStackDepth(envPtr);

    /*
     * If syntax does not match what we expect for [catch], do not compile.
     * Let runtime checks determine if syntax has changed.
     */

     * refer to local scalars.
     */

    resultIndex = optsIndex = -1;
    cmdTokenPtr = TokenAfter(parsePtr->tokenPtr);
    if (parsePtr->numWords >= 3) {
	resultNameTokenPtr = TokenAfter(cmdTokenPtr);
	/* DGP */
	resultIndex = LocalScalarFromToken(resultNameTokenPtr, envPtr);
	if (resultIndex < 0) {
	    return TCL_ERROR;
	}

	/* DKF */
	if (parsePtr->numWords == 4) {
	    optsNameTokenPtr = TokenAfter(resultNameTokenPtr);
	    optsIndex = LocalScalarFromToken(optsNameTokenPtr, envPtr);
	    if (optsIndex < 0) {
		return TCL_ERROR;
	    }
	}

    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;
    int i, dictVarIndex;
    DefineLineInformation;	/* TIP #280 */
    Tcl_Token *varTokenPtr;

    /*
     * There must be at least one argument after the command.
     */

    if (parsePtr->numWords < 4) {
	return TCL_ERROR;

    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;
    int i;
    DefineLineInformation;	/* TIP #280 */

    /*
     * There must be at least two arguments after the command (the single-arg
     * case is legal, but too special and magic for us to deal with here).
     */

    /* TODO: Consider support for compiling expanded args. */

    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;
    int i;
    DefineLineInformation;	/* TIP #280 */

    /*
     * There must be at least two arguments after the command (the single-arg
     * case is legal, but too special and magic for us to deal with here).
     */

    /* TODO: Consider support for compiling expanded args. */

    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int i, dictVarIndex;

    /*
     * There must be at least one argument after the variable name for us to
     * compile to bytecode.
     */

    Tcl_Interp *interp,		/* Used for context. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{



    /*
     * General syntax: [error message ?errorInfo? ?errorCode?]
     */

    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */

    if (parsePtr->numWords < 2 || parsePtr->numWords > 4) {
	return TCL_ERROR;
    }

    /*
     * Handle the message.
     */

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *startTokenPtr, *testTokenPtr, *nextTokenPtr, *bodyTokenPtr;
    JumpFixup jumpEvalCondFixup;
    int bodyCodeOffset, nextCodeOffset, jumpDist;
    int bodyRange, nextRange;
    DefineLineInformation;	/* TIP #280 */

    if (parsePtr->numWords != 5) {
	return TCL_ERROR;
    }

    /*
     * If the test expression requires substitutions, don't compile the for

				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr,		/* Holds resulting instructions. */
    int collect)		/* Select collecting or accumulating mode
				 * (TCL_EACH_*) */
{

    Proc *procPtr = envPtr->procPtr;
    ForeachInfo *infoPtr=NULL;	/* Points to the structure describing this
				 * foreach command. Stored in a AuxData
				 * record in the ByteCode. */

    Tcl_Token *tokenPtr, *bodyTokenPtr;
    int jumpBackOffset, infoIndex, range;
    int numWords, numLists, i, j, code = TCL_OK;
    Tcl_Obj *varListObj = NULL;
    DefineLineInformation;	/* TIP #280 */

    /*
     * If the foreach command isn't in a procedure, don't compile it inline:
     * the payoff is too small.
     */

    if (procPtr == NULL) {

 */

static ClientData
DupForeachInfo(
    ClientData clientData)	/* The foreach command's compilation auxiliary
				 * data to duplicate. */
{
    register ForeachInfo *srcPtr = clientData;
    ForeachInfo *dupPtr;
    register ForeachVarList *srcListPtr, *dupListPtr;
    int numVars, i, j, numLists = srcPtr->numLists;

    dupPtr = ckalloc(sizeof(ForeachInfo)
	    + numLists * sizeof(ForeachVarList *));
    dupPtr->numLists = numLists;
    dupPtr->firstValueTemp = srcPtr->firstValueTemp;
    dupPtr->loopCtTemp = srcPtr->loopCtTemp;

 */

static void
FreeForeachInfo(
    ClientData clientData)	/* The foreach command's compilation auxiliary
				 * data to free. */
{
    register ForeachInfo *infoPtr = clientData;
    register ForeachVarList *listPtr;
    int numLists = infoPtr->numLists;
    register int i;

    for (i = 0;  i < numLists;  i++) {
	listPtr = infoPtr->varLists[i];
	ckfree(listPtr);
    }
    ckfree(infoPtr);
}

static void
PrintForeachInfo(
    ClientData clientData,
    Tcl_Obj *appendObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register ForeachInfo *infoPtr = clientData;
    register ForeachVarList *varsPtr;
    int i, j;

    Tcl_AppendToObj(appendObj, "data=[", -1);

    for (i=0 ; i<infoPtr->numLists ; i++) {
	if (i) {
	    Tcl_AppendToObj(appendObj, ", ", -1);

static void
PrintNewForeachInfo(
    ClientData clientData,
    Tcl_Obj *appendObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register ForeachInfo *infoPtr = clientData;
    register ForeachVarList *varsPtr;
    int i, j;

    Tcl_AppendPrintfToObj(appendObj, "jumpOffset=%+d, vars=",
	    infoPtr->loopCtTemp);
    for (i=0 ; i<infoPtr->numLists ; i++) {
	if (i) {
	    Tcl_AppendToObj(appendObj, ",", -1);

static void
DisassembleForeachInfo(
    ClientData clientData,
    Tcl_Obj *dictObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register ForeachInfo *infoPtr = clientData;
    register ForeachVarList *varsPtr;
    int i, j;
    Tcl_Obj *objPtr, *innerPtr;

    /*
     * Data stores.
     */

static void
DisassembleNewForeachInfo(
    ClientData clientData,
    Tcl_Obj *dictObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register ForeachInfo *infoPtr = clientData;
    register ForeachVarList *varsPtr;
    int i, j;
    Tcl_Obj *objPtr, *innerPtr;

    /*
     * Jump offset.
     */

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Token *varTokenPtr,	/* Points to a variable token. */
    CompileEnv *envPtr,		/* Holds resulting instructions. */
    int flags,			/* TCL_NO_LARGE_INDEX | TCL_NO_ELEMENT. */
    int *localIndexPtr,		/* Must not be NULL. */
    int *isScalarPtr)		/* Must not be NULL. */
{
    register const char *p;
    const char *last, *name, *elName;
    register int n;
    Tcl_Token *elemTokenPtr = NULL;
    int nameLen, elNameLen, simpleVarName, localIndex;
    int elemTokenCount = 0, allocedTokens = 0, removedParen = 0;

    /*
     * Decide if we can use a frame slot for the var/array name or if we need
     * to emit code to compute and push the name at runtime. We use a frame

	name = varTokenPtr[1].start;
	nameLen = varTokenPtr[1].size;
	if (name[nameLen-1] == ')') {
	    /*
	     * last char is ')' => potential array reference.
	     */
	    last = Tcl_UtfPrev(name + nameLen, name);

	    if (*last == ')') {
		for (p = name;  p < last;  p = Tcl_UtfNext(p)) {
		    if (*p == '(') {
			elName = p + 1;
			elNameLen = last - elName;
			nameLen = p - name;
			break;
		    }
		}

		elemTokenPtr->numComponents = 0;
		elemTokenCount = 1;
	    }
	}
    } else if (interp && ((n = varTokenPtr->numComponents) > 1)
	    && (varTokenPtr[1].type == TCL_TOKEN_TEXT)
	    && (varTokenPtr[n].type == TCL_TOKEN_TEXT)
	    && (*((p = varTokenPtr[n].start + varTokenPtr[n].size)-1) == ')')
	    && (*Tcl_UtfPrev(p, varTokenPtr[n].start) == ')')) {
	/*
	 * Check for parentheses inside first token.
	 */

	simpleVarName = 0;
	for (p = varTokenPtr[1].start,
	     last = p + varTokenPtr[1].size;  p < last;  p = Tcl_UtfNext(p)) {
	    if (*p == '(') {
		simpleVarName = 1;
		break;
	    }
	}
	if (simpleVarName) {
	    int remainingLen;

    if (simpleVarName) {
	/*
	 * See whether name has any namespace separators (::'s).
	 */

	int hasNsQualifiers = 0;

	for (p = name, last = p + nameLen-1;  p < last;  p = Tcl_UtfNext(p)) {
	    if ((*p == ':') && (*(p+1) == ':')) {
		hasNsQualifiers = 1;
		break;
	    }
	}

	/*

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr;
    int localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */

    /* TODO: Consider support for compiling expanded args. */
    numWords = parsePtr->numWords;
    if (numWords < 2) {
	return TCL_ERROR;
    }

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    JumpFixupArray jumpFalseFixupArray;
				/* Used to fix the ifFalse jump after each
				 * test when its target PC is determined. */
    JumpFixupArray jumpEndFixupArray;
				/* Used to fix the jump after each "then" body
				 * to the end of the "if" when that PC is
				 * determined. */
    Tcl_Token *tokenPtr, *testTokenPtr;
    int jumpIndex = 0;		/* Avoid compiler warning. */
    int jumpFalseDist, numWords, wordIdx, numBytes, j, code;
    const char *word;
    int realCond = 1;		/* Set to 0 for static conditions:
				 * "if 0 {..}" */
    int boolVal;		/* Value of static condition. */
    int compileScripts = 1;
    DefineLineInformation;	/* TIP #280 */

    /*
     * Only compile the "if" command if all arguments are simple words, in
     * order to insure correct substitution [Bug 219166]
     */

    tokenPtr = parsePtr->tokenPtr;

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr, *incrTokenPtr;
    int isScalar, localIndex, haveImmValue, immValue;
    DefineLineInformation;	/* TIP #280 */

    if ((parsePtr->numWords != 2) && (parsePtr->numWords != 3)) {
	return TCL_ERROR;
    }

    varTokenPtr = TokenAfter(parsePtr->tokenPtr);

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;
    int isScalar, localIndex;
    DefineLineInformation;	/* TIP #280 */

    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }

    /*
     * Decide if we can use a frame slot for the var/array name or if we need

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr, *valueTokenPtr;
    int isScalar, localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */

    /* TODO: Consider support for compiling expanded args. */
    numWords = parsePtr->numWords;
    if (numWords < 3) {
	return TCL_ERROR;
    }

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;
    int isScalar, localIndex, numWords, idx;
    DefineLineInformation;	/* TIP #280 */

    numWords = parsePtr->numWords;

    /*
     * Check for command syntax error, but we'll punt that to runtime.
     */

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *idxTokenPtr, *valTokenPtr;
    int i, idx, numWords = parsePtr->numWords;
    DefineLineInformation;	/* TIP #280 */

    /*
     * Quit if too few args.
     */

    /* TODO: Consider support for compiling expanded args. */
    if (numWords <= 1) {

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *varTokenPtr;
    DefineLineInformation;	/* TIP #280 */


    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }
    varTokenPtr = TokenAfter(parsePtr->tokenPtr);

    CompileWord(envPtr, varTokenPtr, interp, 1);

    Tcl_Interp *interp,		/* Tcl interpreter for context. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{
    Tcl_Token *tokenPtr, *listTokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int idx1, idx2;

    if (parsePtr->numWords != 4) {
	return TCL_ERROR;
    }
    listTokenPtr = TokenAfter(parsePtr->tokenPtr);

    Tcl_Interp *interp,		/* Tcl interpreter for context. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{
    Tcl_Token *tokenPtr, *listTokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int idx, i;

    if (parsePtr->numWords < 3) {
	return TCL_ERROR;
    }
    listTokenPtr = TokenAfter(parsePtr->tokenPtr);

    Tcl_Interp *interp,		/* Tcl interpreter for context. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{
    Tcl_Token *tokenPtr, *listTokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int idx1, idx2, i;
    int emptyPrefix=1, suffixStart = 0;

    if (parsePtr->numWords < 4) {
	return TCL_ERROR;
    }
    listTokenPtr = TokenAfter(parsePtr->tokenPtr);

    Tcl_Interp *interp,		/* Tcl interpreter for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{

    int tempDepth;		/* Depth used for emitting one part of the
				 * code burst. */
    Tcl_Token *varTokenPtr;	/* Pointer to the Tcl_Token representing the
				 * parse of the variable name. */
    int localIndex;		/* Index of var in local var table. */
    int isScalar;		/* Flag == 1 if scalar, 0 if array. */
    int i;
    DefineLineInformation;	/* TIP #280 */

    /*
     * Check argument count.
     */

    /* TODO: Consider support for compiling expanded args. */
    if (parsePtr->numWords < 3) {

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */


    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }
    tokenPtr = TokenAfter(parsePtr->tokenPtr);

    /*

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */


    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }
    tokenPtr = TokenAfter(parsePtr->tokenPtr);

    CompileWord(envPtr,	tokenPtr,			interp, 1);
    TclEmitOpcode(	INST_ORIGIN_COMMAND,		envPtr);
    return TCL_OK;
}

int
TclCompileNamespaceQualifiersCmd(
    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr);
    DefineLineInformation;	/* TIP #280 */

    int off;

    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }

    CompileWord(envPtr, tokenPtr, interp, 1);

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr);
    DefineLineInformation;	/* TIP #280 */

    JumpFixup jumpFixup;

    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }

    /*

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
    int localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */

    if (envPtr->procPtr == NULL) {
	return TCL_ERROR;
    }

    /*
     * Only compile [namespace upvar ...]: needs an even number of args, >=4

    Tcl_Interp *interp,		/* Tcl interpreter for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{

    Tcl_Token *varTokenPtr;	/* Pointer to the Tcl_Token representing the
				 * parse of the RE or string. */
    int i, len, nocase, exact, sawLast, simple;
    const char *str;
    DefineLineInformation;	/* TIP #280 */

    /*
     * We are only interested in compiling simple regexp cases. Currently
     * supported compile cases are:
     *   regexp ?-nocase? ?--? staticString $var
     *   regexp ?-nocase? ?--? {^staticString$} $var
     */

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    /*
     * General syntax: [return ?-option value ...? ?result?]
     * An even number of words means an explicit result argument is present.
     */
    int level, code, objc, size, status = TCL_OK;
    int numWords = parsePtr->numWords;
    int explicitResult = (0 == (numWords % 2));
    int numOptionWords = numWords - 1 - explicitResult;
    Tcl_Obj *returnOpts, **objv;
    Tcl_Token *wordTokenPtr = TokenAfter(parsePtr->tokenPtr);
    DefineLineInformation;	/* TIP #280 */

    /*
     * Check for special case which can always be compiled:
     *	    return -options <opts> <msg>
     * Unlike the normal [return] compilation, this version does everything at
     * runtime so it can handle arbitrary words and not just literals. Note
     * that if INST_RETURN_STK wasn't already needed for something else

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr, *otherTokenPtr, *localTokenPtr;
    int localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */
    Tcl_Obj *objPtr;

    if (envPtr->procPtr == NULL) {
	return TCL_ERROR;
    }

    numWords = parsePtr->numWords;

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr, *valueTokenPtr;
    int localIndex, numWords, i;
    DefineLineInformation;	/* TIP #280 */

    numWords = parsePtr->numWords;
    if (numWords < 2) {
	return TCL_ERROR;
    }

    /*

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr, *valueTokenPtr;
    int isAssignment, isScalar, localIndex, numWords;
    DefineLineInformation;	/* TIP #280 */

    numWords = parsePtr->numWords;
    if ((numWords != 2) && (numWords != 3)) {
	return TCL_ERROR;
    }
    isAssignment = (numWords == 3);

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    int i, numWords = parsePtr->numWords, numArgs;
    Tcl_Token *wordTokenPtr;
    Tcl_Obj *obj, *folded;
    DefineLineInformation;	/* TIP #280 */

    /* Trivial case, no arg */

    if (numWords<2) {
	PushStringLiteral(envPtr, "");
	return TCL_OK;
    }

    Tcl_Interp *interp,		/* Tcl interpreter for context. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the
				 * command. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds the resulting instructions. */
{
    Tcl_Token *tokenPtr, *valueTokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int first, last;

    if (parsePtr->numWords < 4 || parsePtr->numWords > 5) {
	return TCL_ERROR;
    }

    /* Bytecode to compute/push string argument being replaced */

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    int numArgs = parsePtr->numWords - 1;
    int numOpts = numArgs - 1;
    int objc, flags = TCL_SUBST_ALL;
    Tcl_Obj **objv/*, *toSubst = NULL*/;
    Tcl_Token *wordTokenPtr = TokenAfter(parsePtr->tokenPtr);
    int code = TCL_ERROR;
    DefineLineInformation;	/* TIP #280 */

    if (numArgs == 0) {
	return TCL_ERROR;
    }

    objv = TclStackAlloc(interp, /*numArgs*/ numOpts * sizeof(Tcl_Obj *));

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr;	/* Pointer to tokens in command. */
    int numWords;		/* Number of words in command. */

    Tcl_Token *valueTokenPtr;	/* Token for the value to switch on. */
    enum {Switch_Exact, Switch_Glob, Switch_Regexp} mode;
				/* What kind of switch are we doing? */

    Tcl_Token *bodyTokenArray;	/* Array of real pattern list items. */
    Tcl_Token **bodyToken;	/* Array of pointers to pattern list items. */
    int *bodyLines;		/* Array of line numbers for body list
				 * items. */
    int **bodyContLines;	/* Array of continuation line info. */
    int noCase;			/* Has the -nocase flag been given? */
    int foundMode = 0;		/* Have we seen a mode flag yet? */
    int i, valueIndex;
    int result = TCL_ERROR;
    DefineLineInformation;	/* TIP #280 */
    int *clNext = envPtr->clNext;

    /*
     * Only handle the following versions:
     *   switch         ?--? word {pattern body ...}
     *   switch -exact  ?--? word {pattern body ...}
     *   switch -glob   ?--? word {pattern body ...}

     * way to statically avoid the problems you get from strings-to-be-matched
     * that start with a - (the interpreted code falls apart if it encounters
     * them, so we punt if we *might* encounter them as that is the easiest
     * way of emulating the behaviour).
     */

    for (; numWords>=3 ; tokenPtr=TokenAfter(tokenPtr),numWords--) {
	register unsigned size = tokenPtr[1].size;
	register const char *chrs = tokenPtr[1].start;

	/*
	 * We only process literal options, and we assume that -e, -g and -n
	 * are unique prefixes of -exact, -glob and -nocase respectively (true
	 * at time of writing). Note that -exact and -glob may only be given
	 * at most once or we bail out (error case).
	 */

static void
PrintJumptableInfo(
    ClientData clientData,
    Tcl_Obj *appendObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register JumptableInfo *jtPtr = clientData;
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    const char *keyPtr;
    int offset, i = 0;

    hPtr = Tcl_FirstHashEntry(&jtPtr->hashTable, &search);
    for (; hPtr ; hPtr = Tcl_NextHashEntry(&search)) {

static void
DisassembleJumptableInfo(
    ClientData clientData,
    Tcl_Obj *dictObj,
    ByteCode *codePtr,
    unsigned int pcOffset)
{
    register JumptableInfo *jtPtr = clientData;
    Tcl_Obj *mapping = Tcl_NewObj();
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;
    const char *keyPtr;
    int offset;

    hPtr = Tcl_FirstHashEntry(&jtPtr->hashTable, &search);

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *varTokenPtr;
    int isScalar, localIndex, flags = 1, i, varCount = 0, haveFlags = 0;
    DefineLineInformation;	/* TIP #280 */

    /* TODO: Consider support for compiling expanded args. */

    /*
     * Verify that all words - except the first non-option one - are known at
     * compile time so that we can handle them without needing to do a nasty
     * push/rotate. [Bug 3970f54c4e]

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *testTokenPtr, *bodyTokenPtr;
    JumpFixup jumpEvalCondFixup;
    int testCodeOffset, bodyCodeOffset, jumpDist, range, code, boolVal;
    int loopMayEnd = 1;		/* This is set to 0 if it is recognized as an
				 * infinite loop. */
    Tcl_Obj *boolObj;
    DefineLineInformation;	/* TIP #280 */

    if (parsePtr->numWords != 3) {
	return TCL_ERROR;
    }

    /*
     * If the test expression requires substitutions, don't compile the while

static int
CompileUnaryOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    int instruction,
    CompileEnv *envPtr)
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */


    if (parsePtr->numWords != 2) {
	return TCL_ERROR;
    }
    tokenPtr = TokenAfter(parsePtr->tokenPtr);
    CompileWord(envPtr, tokenPtr, interp, 1);
    TclEmitOpcode(instruction, envPtr);

CompileAssociativeBinaryOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    const char *identity,
    int instruction,
    CompileEnv *envPtr)
{
    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int words;

    /* TODO: Consider support for compiling expanded args. */
    for (words=1 ; words<parsePtr->numWords ; words++) {
	tokenPtr = TokenAfter(tokenPtr);
	CompileWord(envPtr, tokenPtr, interp, words);
    }

static int
CompileComparisonOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    int instruction,
    CompileEnv *envPtr)
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */


    /* TODO: Consider support for compiling expanded args. */
    if (parsePtr->numWords < 3) {
	PUSH("1");
    } else if (parsePtr->numWords == 3) {
	tokenPtr = TokenAfter(parsePtr->tokenPtr);
	CompileWord(envPtr, tokenPtr, interp, 1);

TclCompilePowOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)
{




    /*
     * This one has its own implementation because the ** operator is the only
     * one with right associativity.
     */

    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
    DefineLineInformation;	/* TIP #280 */
    int words;

    for (words=1 ; words<parsePtr->numWords ; words++) {
	tokenPtr = TokenAfter(tokenPtr);
	CompileWord(envPtr, tokenPtr, interp, words);
    }
    if (parsePtr->numWords <= 2) {
	PUSH("1");
	words++;

TclCompileMinusOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)
{
    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int words;

    /* TODO: Consider support for compiling expanded args. */
    if (parsePtr->numWords == 1) {
	/*
	 * Fallback to direct eval to report syntax error.
	 */

TclCompileDivOpCmd(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)
{
    Tcl_Token *tokenPtr = parsePtr->tokenPtr;
    DefineLineInformation;	/* TIP #280 */

    int words;

    /* TODO: Consider support for compiling expanded args. */
    if (parsePtr->numWords == 1) {
	/*
	 * Fallback to direct eval to report syntax error.
	 */

 *	cleanup is delayed until the last execution of the code completes.
 *
 *----------------------------------------------------------------------
 */

static void
FreeByteCodeInternalRep(
    register Tcl_Obj *objPtr)	/* Object whose internal rep to free. */
{
    register ByteCode *codePtr = objPtr->internalRep.twoPtrValue.ptr1;

    objPtr->typePtr = NULL;
    if (codePtr->refCount-- <= 1) {
	TclCleanupByteCode(codePtr);
    }
}


 *	Also releases its literals and frees its auxiliary data items.
 *
 *----------------------------------------------------------------------
 */

void
TclCleanupByteCode(
    register ByteCode *codePtr)	/* Points to the ByteCode to free. */
{
    Tcl_Interp *interp = (Tcl_Interp *) *codePtr->interpHandle;
    Interp *iPtr = (Interp *) interp;
    int numLitObjects = codePtr->numLitObjects;
    int numAuxDataItems = codePtr->numAuxDataItems;
    register Tcl_Obj **objArrayPtr, *objPtr;
    register const AuxData *auxDataPtr;
    int i;
#ifdef TCL_COMPILE_STATS

    if (interp != NULL) {
	ByteCodeStats *statsPtr;
	Tcl_Time destroyTime;
	int lifetimeSec, lifetimeMicroSec, log2;

 *	the cleanup is delayed until the last execution of the code completes.
 *
 *----------------------------------------------------------------------
 */

static void
FreeSubstCodeInternalRep(
    register Tcl_Obj *objPtr)	/* Object whose internal rep to free. */
{
    register ByteCode *codePtr = objPtr->internalRep.twoPtrValue.ptr1;

    objPtr->typePtr = NULL;
    if (codePtr->refCount-- <= 1) {
	TclCleanupByteCode(codePtr);
    }
}

 *----------------------------------------------------------------------
 */

void
TclInitCompileEnv(
    Tcl_Interp *interp,		/* The interpreter for which a CompileEnv
				 * structure is initialized. */
    register CompileEnv *envPtr,/* Points to the CompileEnv structure to
				 * initialize. */
    const char *stringPtr,	/* The source string to be compiled. */
    int numBytes,		/* Number of bytes in source string. */
    const CmdFrame *invoker,	/* Location context invoking the bcc */
    int word)			/* Index of the word in that context getting
				 * compiled */
{

 *	corresponding ByteCode structure.
 *
 *----------------------------------------------------------------------
 */

void
TclFreeCompileEnv(
    register CompileEnv *envPtr)/* Points to the CompileEnv structure. */
{
    if (envPtr->localLitTable.buckets != envPtr->localLitTable.staticBuckets){
	ckfree(envPtr->localLitTable.buckets);
	envPtr->localLitTable.buckets = envPtr->localLitTable.staticBuckets;
    }
    if (envPtr->iPtr) {
	/*

TclCompileInvocation(
    Tcl_Interp *interp,
    Tcl_Token *tokenPtr,
    Tcl_Obj *cmdObj,
    int numWords,
    CompileEnv *envPtr)
{
    int wordIdx = 0, depth = TclGetStackDepth(envPtr);
    DefineLineInformation;


    if (cmdObj) {
	CompileCmdLiteral(interp, cmdObj, envPtr);
	wordIdx = 1;
	tokenPtr = TokenAfter(tokenPtr);
    }

CompileExpanded(
    Tcl_Interp *interp,
    Tcl_Token *tokenPtr,
    Tcl_Obj *cmdObj,
    int numWords,
    CompileEnv *envPtr)
{
    int wordIdx = 0;
    DefineLineInformation;

    int depth = TclGetStackDepth(envPtr);

    StartExpanding(envPtr);
    if (cmdObj) {
	CompileCmdLiteral(interp, cmdObj, envPtr);
	wordIdx = 1;
	tokenPtr = TokenAfter(tokenPtr);

static int
CompileCmdCompileProc(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    Command *cmdPtr,
    CompileEnv *envPtr)
{
    int unwind = 0, incrOffset = -1;
    DefineLineInformation;

    int depth = TclGetStackDepth(envPtr);

    /*
     * Emit of the INST_START_CMD instruction is controlled by the value of
     * envPtr->atCmdStart:
     *
     * atCmdStart == 2	: We are not using the INST_START_CMD instruction.

 */

void
TclInitByteCodeObj(
    Tcl_Obj *objPtr,		/* Points object that should be initialized,
				 * and whose string rep contains the source
				 * code. */
    register CompileEnv *envPtr)/* Points to the CompileEnv structure from
				 * which to create a ByteCode structure. */
{
    register ByteCode *codePtr;
    size_t codeBytes, objArrayBytes, exceptArrayBytes, cmdLocBytes;
    size_t auxDataArrayBytes, structureSize;
    register unsigned char *p;
#ifdef TCL_COMPILE_DEBUG
    unsigned char *nextPtr;
#endif
    int numLitObjects = envPtr->literalArrayNext;
    Namespace *namespacePtr;
    int i, isNew;
    Interp *iPtr;

 *	variable is unknown, or if the name is NULL.
 *
 *----------------------------------------------------------------------
 */

int
TclFindCompiledLocal(
    register const char *name,	/* Points to first character of the name of a
				 * scalar or array variable. If NULL, a
				 * temporary var should be created. */
    int nameBytes,		/* Number of bytes in the name. */
    int create,			/* If 1, allocate a local frame entry for the
				 * variable if it is new. */
    CompileEnv *envPtr)		/* Points to the current compile environment*/
{
    register CompiledLocal *localPtr;
    int localVar = -1;
    register int i;
    Proc *procPtr;

    /*
     * If not creating a temporary, does a local variable of the specified
     * name already exist?
     */

 *
 *----------------------------------------------------------------------
 */

int
TclCreateExceptRange(
    ExceptionRangeType type,	/* The kind of ExceptionRange desired. */
    register CompileEnv *envPtr)/* Points to CompileEnv for which to create a
				 * new ExceptionRange structure. */
{
    register ExceptionRange *rangePtr;
    register ExceptionAux *auxPtr;
    int index = envPtr->exceptArrayNext;

    if (index >= envPtr->exceptArrayEnd) {
	/*
	 * Expand the ExceptionRange array. The currently allocated entries
	 * are stored between elements 0 and (envPtr->exceptArrayNext - 1)
	 * [inclusive].

int
TclCreateAuxData(
    ClientData clientData,	/* The compilation auxiliary data to store in
				 * the new aux data record. */
    const AuxDataType *typePtr,	/* Pointer to the type to attach to this
				 * AuxData */
    register CompileEnv *envPtr)/* Points to the CompileEnv for which a new
				 * aux data structure is to be allocated. */
{
    int index;			/* Index for the new AuxData structure. */
    register AuxData *auxDataPtr;
				/* Points to the new AuxData structure */

    index = envPtr->auxDataArrayNext;
    if (index >= envPtr->auxDataArrayEnd) {
	/*
	 * Expand the AuxData array. The currently allocated entries are
	 * stored between elements 0 and (envPtr->auxDataArrayNext - 1)

 *	The JumpFixupArray structure is initialized.
 *
 *----------------------------------------------------------------------
 */

void
TclInitJumpFixupArray(
    register JumpFixupArray *fixupArrayPtr)
				/* Points to the JumpFixupArray structure to
				 * initialize. */
{
    fixupArrayPtr->fixup = fixupArrayPtr->staticFixupSpace;
    fixupArrayPtr->next = 0;
    fixupArrayPtr->end = JUMPFIXUP_INIT_ENTRIES - 1;
    fixupArrayPtr->mallocedArray = 0;

 *	array to the new one.
 *
 *----------------------------------------------------------------------
 */

void
TclExpandJumpFixupArray(
    register JumpFixupArray *fixupArrayPtr)
				/* Points to the JumpFixupArray structure to
				 * enlarge. */
{
    /*
     * The currently allocated jump fixup entries are stored from fixup[0] up
     * to fixup[fixupArrayPtr->fixupNext] (*not* inclusive). We assume
     * fixupArrayPtr->fixupNext is equal to fixupArrayPtr->fixupEnd.

 *	Allocated storage in the JumpFixupArray structure is freed.
 *
 *----------------------------------------------------------------------
 */

void
TclFreeJumpFixupArray(
    register JumpFixupArray *fixupArrayPtr)
				/* Points to the JumpFixupArray structure to
				 * free. */
{
    if (fixupArrayPtr->mallocedArray) {
	ckfree(fixupArrayPtr->fixup);
    }
}

static int
GetCmdLocEncodingSize(
    CompileEnv *envPtr)		/* Points to compilation environment structure
				 * containing the CmdLocation structure to
				 * encode. */
{
    register CmdLocation *mapPtr = envPtr->cmdMapPtr;
    int numCmds = envPtr->numCommands;
    int codeDelta, codeLen, srcDelta, srcLen;
    int codeDeltaNext, codeLengthNext, srcDeltaNext, srcLengthNext;
				/* The offsets in their respective byte
				 * sequences where the next encoded offset or
				 * length should go. */
    int prevCodeOffset, prevSrcOffset, i;

				 * encode. */
    ByteCode *codePtr,		/* ByteCode in which to encode envPtr's
				 * command location information. */
    unsigned char *startPtr)	/* Points to the first byte in codePtr's
				 * memory block where the location information
				 * is to be stored. */
{
    register CmdLocation *mapPtr = envPtr->cmdMapPtr;
    int numCmds = envPtr->numCommands;
    register unsigned char *p = startPtr;
    int codeDelta, codeLen, srcDelta, srcLen, prevOffset;
    register int i;

    /*
     * Encode the code offset for each command as a sequence of deltas.
     */

    codePtr->codeDeltaStart = p;
    prevOffset = 0;

void
RecordByteCodeStats(
    ByteCode *codePtr)		/* Points to ByteCode structure with info
				 * to add to accumulated statistics. */
{
    Interp *iPtr = (Interp *) *codePtr->interpHandle;
    register ByteCodeStats *statsPtr;

    if (iPtr == NULL) {
	/* Avoid segfaulting in case we're called in a deleted interp */
	return;
    }
    statsPtr = &(iPtr->stats);

} EnsembleCmdRep;


static inline Tcl_Obj *
NewNsObj(
    Tcl_Namespace *namespacePtr)
{
    register Namespace *nsPtr = (Namespace *) namespacePtr;

    if (namespacePtr == TclGetGlobalNamespace(nsPtr->interp)) {
	return Tcl_NewStringObj("::", 2);
    } else {
	return Tcl_NewStringObj(nsPtr->fullName, -1);
    }
}

	char *fullName = NULL;	/* Full name of the subcommand. */
	int stringLength, i;
	int tableLength = ensemblePtr->subcommandTable.numEntries;
	Tcl_Obj *fix;

	subcmdName = Tcl_GetStringFromObj(subObj, &stringLength);
	for (i=0 ; i<tableLength ; i++) {
	    register int cmp = strncmp(subcmdName,
		    ensemblePtr->subcommandArrayPtr[i],
		    (unsigned) stringLength);

	    if (cmp == 0) {
		if (fullName != NULL) {
		    /*
		     * Since there's never the exact-match case to worry about

static void
MakeCachedEnsembleCommand(
    Tcl_Obj *objPtr,
    EnsembleConfig *ensemblePtr,
    Tcl_HashEntry *hPtr,
    Tcl_Obj *fix)
{
    register EnsembleCmdRep *ensembleCmd;

    if (objPtr->typePtr == &ensembleCmdType) {
	ensembleCmd = objPtr->internalRep.twoPtrValue.ptr1;
	TclCleanupCommandMacro(ensembleCmd->token);
	if (ensembleCmd->fix) {
	    Tcl_DecrRefCount(ensembleCmd->fix);
	}

    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokenPtr = TokenAfter(parsePtr->tokenPtr);
    Tcl_Obj *mapObj, *subcmdObj, *targetCmdObj, *listObj, **elems;
    Tcl_Obj *replaced = Tcl_NewObj(), *replacement;
    Tcl_Command ensemble = (Tcl_Command) cmdPtr;
    Command *oldCmdPtr = cmdPtr, *newCmdPtr;
    int len, result, flags = 0, i, depth = 1, invokeAnyway = 0;
    int ourResult = TCL_ERROR;
    unsigned numBytes;
    const char *word;
    DefineLineInformation;

    Tcl_IncrRefCount(replaced);
    if (parsePtr->numWords < depth + 1) {
	goto failed;
    }
    if (tokenPtr->type != TCL_TOKEN_SIMPLE_WORD) {
	/*

TclAttemptCompileProc(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    int depth,
    Command *cmdPtr,
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    int result, i;
    Tcl_Token *saveTokenPtr = parsePtr->tokenPtr;
    int savedStackDepth = envPtr->currStackDepth;
    unsigned savedCodeNext = envPtr->codeNext - envPtr->codeStart;
    int savedAuxDataArrayNext = envPtr->auxDataArrayNext;
    int savedExceptArrayNext = envPtr->exceptArrayNext;
#ifdef TCL_COMPILE_DEBUG
    int savedExceptDepth = envPtr->exceptDepth;
#endif
    DefineLineInformation;

    if (cmdPtr->compileProc == NULL) {
	return TCL_ERROR;
    }

    /*
     * Advance parsePtr->tokenPtr so that it points at the last subcommand.

CompileToInvokedCommand(
    Tcl_Interp *interp,
    Tcl_Parse *parsePtr,
    Tcl_Obj *replacements,
    Command *cmdPtr,
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{

    Tcl_Token *tokPtr;
    Tcl_Obj *objPtr, **words;
    char *bytes;
    int length, i, numWords, cmdLit, extraLiteralFlags = LITERAL_CMD_NAME;
    DefineLineInformation;

    /*
     * Push the words of the command. Take care; the command words may be
     * scripts that have backslashes in them, and [info frame 0] can see the
     * difference. Hence the call to TclContinuationsEnterDerived...
     */

    } while (0);

#define TclUtfPrev(src, start) \
	(((src) < (start)+2) ? (start) : \
	(UCHAR(*((src) - 1))) < 0x80 ? (src)-1 : \
	Tcl_UtfPrev(src, start))

#define TclUtfNext(src)	\
	(((UCHAR(*(src))) < 0x80) ? (src) + 1 : Tcl_UtfNext(src))

/*
 *----------------------------------------------------------------
 * Macro that encapsulates the logic that determines when it is safe to
 * interpret a string as a byte array directly. In summary, the object must be
 * a byte array and must not have a string representation (as the operations
 * that it is used in are defined on strings, not byte arrays). Theoretically
 * it is possible to also be efficient in the case where the object's bytes

int
Tcl_ProcObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    register Interp *iPtr = (Interp *) interp;
    Proc *procPtr;
    const char *procName;
    const char *simpleName, *procArgs, *procBody;
    Namespace *nsPtr, *altNsPtr, *cxtNsPtr;
    Tcl_Command cmd;

    if (objc != 4) {

     * this file. The differences are the different index of the body in the
     * line array of the context, and the lambda code requires some special
     * processing. Find a way to factor the common elements into a single
     * function.
     */

    if (iPtr->cmdFramePtr) {
	CmdFrame *contextPtr = TclStackAlloc(interp, sizeof(CmdFrame));

	*contextPtr = *iPtr->cmdFramePtr;

	if (contextPtr->type == TCL_LOCATION_BC) {
	    /*
	     * Retrieve source information from the bytecode, if possible. If
	     * the information is retrieved successfully, context.type will be
	     * TCL_LOCATION_SOURCE and the reference held by
	     * context.data.eval.path will be counted.
	     */

	     * proc body was not created by substitution.
	     */

	    if (contextPtr->line
		    && (contextPtr->nline >= 4) && (contextPtr->line[3] >= 0)) {
		int isNew;
		Tcl_HashEntry *hePtr;
		CmdFrame *cfPtr = ckalloc(sizeof(CmdFrame));

		cfPtr->level = -1;
		cfPtr->type = contextPtr->type;
		cfPtr->line = ckalloc(sizeof(int));
		cfPtr->line[0] = contextPtr->line[3];
		cfPtr->nline = 1;
		cfPtr->framePtr = NULL;
		cfPtr->nextPtr = NULL;

		cfPtr->data.eval.path = contextPtr->data.eval.path;
		Tcl_IncrRefCount(cfPtr->data.eval.path);

		cfPtr->cmd = NULL;
		cfPtr->len = 0;

		hePtr = Tcl_CreateHashEntry(iPtr->linePBodyPtr,
			procPtr, &isNew);
		if (!isNew) {
		    /*
		     * Get the old command frame and release it. See also
		     * TclProcCleanupProc in this file. Currently it seems as
		     * if only the procbodytest::proc command of the testsuite
		     * is able to trigger this situation.
		     */

    const char *procName,	/* Unqualified name of this proc. */
    Tcl_Obj *argsPtr,		/* Description of arguments. */
    Tcl_Obj *bodyPtr,		/* Command body. */
    Proc **procPtrPtr)		/* Returns: pointer to proc data. */
{
    Interp *iPtr = (Interp *) interp;

    register Proc *procPtr;
    int i, result, numArgs;
    register CompiledLocal *localPtr = NULL;
    Tcl_Obj **argArray;
    int precompiled = 0;

    if (bodyPtr->typePtr == &tclProcBodyType) {
	/*
	 * Because the body is a TclProProcBody, the actual body is already
	 * compiled, and it is not shared with anyone else, so it's OK not to

	 * Create and initialize a Proc structure for the procedure. We
	 * increment the ref count of the procedure's body object since there
	 * will be a reference to it in the Proc structure.
	 */

	Tcl_IncrRefCount(bodyPtr);

	procPtr = ckalloc(sizeof(Proc));
	procPtr->iPtr = iPtr;
	procPtr->refCount = 1;
	procPtr->bodyPtr = bodyPtr;
	procPtr->numArgs = 0;	/* Actual argument count is set below. */
	procPtr->numCompiledLocals = 0;
	procPtr->firstLocalPtr = NULL;
	procPtr->lastLocalPtr = NULL;
    }

    /*
     * Break up the argument list into argument specifiers, then process each
     * argument specifier. If the body is precompiled, processing is limited
     * to checking that the parsed argument is consistent with the one stored
     * in the Proc.
     */

    result = Tcl_ListObjGetElements(interp , argsPtr ,&numArgs ,&argArray);
    if (result != TCL_OK) {
	goto procError;
    }

    if (precompiled) {
	if (numArgs > procPtr->numArgs) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(

	localPtr = procPtr->firstLocalPtr;
    } else {
	procPtr->numArgs = numArgs;
	procPtr->numCompiledLocals = numArgs;
    }

    for (i = 0; i < numArgs; i++) {
	const char *argname, *argnamei, *argnamelast;
	int fieldCount, nameLength;
	Tcl_Obj **fieldValues;

	/*
	 * Now divide the specifier up into name and default.
	 */

	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "argument with no name", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
		    "FORMALARGUMENTFORMAT", NULL);
	    goto procError;
	}

	argname = Tcl_GetStringFromObj(fieldValues[0], &nameLength);

	/*
	 * Check that the formal parameter name is a scalar.
	 */

	argnamei = argname;
	argnamelast = Tcl_UtfPrev(argname + nameLength, argname);
	while (argnamei < argnamelast) {
	    if (*argnamei == '(') {
		if (*argnamelast == ')') { /* We have an array element. */
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "formal parameter \"%s\" is an array element",
			    Tcl_GetString(fieldValues[0])));
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			    "FORMALARGUMENTFORMAT", NULL);
		    goto procError;
		}
	    } else if (*argnamei == ':' && *(argnamei+1) == ':') {
		Tcl_Obj *errorObj = Tcl_NewStringObj(
		    "formal parameter \"", -1);
		Tcl_AppendObjToObj(errorObj, fieldValues[0]);
		Tcl_AppendToObj(errorObj, "\" is not a simple name", -1);
		Tcl_SetObjResult(interp, errorObj);
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PROC",
			"FORMALARGUMENTFORMAT", NULL);
		goto procError;
	    }
	    argnamei = Tcl_UtfNext(argnamei);

	}

	if (precompiled) {
	    /*
	     * Compare the parsed argument with the stored one. Note that the
	     * only flag value that makes sense at this point is VAR_ARGUMENT
	     * (its value was kept the same as pre VarReform to simplify

	    localPtr = localPtr->nextPtr;
	} else {
	    /*
	     * Allocate an entry in the runtime procedure frame's array of
	     * local variables for the argument.
	     */


	    localPtr = ckalloc(TclOffset(CompiledLocal, name) + fieldValues[0]->length +1);
	    if (procPtr->firstLocalPtr == NULL) {
		procPtr->firstLocalPtr = procPtr->lastLocalPtr = localPtr;
	    } else {
		procPtr->lastLocalPtr->nextPtr = localPtr;
		procPtr->lastLocalPtr = localPtr;
	    }
	    localPtr->nextPtr = NULL;

int
TclGetFrame(
    Tcl_Interp *interp,		/* Interpreter in which to find frame. */
    const char *name,		/* String describing frame. */
    CallFrame **framePtrPtr)	/* Store pointer to frame here (or NULL if
				 * global frame indicated). */
{
    register Interp *iPtr = (Interp *) interp;
    int curLevel, level, result;
    CallFrame *framePtr;

    /*
     * Parse string to figure out which level number to go to.
     */

int
TclObjGetFrame(
    Tcl_Interp *interp,		/* Interpreter in which to find frame. */
    Tcl_Obj *objPtr,		/* Object describing frame. */
    CallFrame **framePtrPtr)	/* Store pointer to frame here (or NULL if
				 * global frame indicated). */
{
    register Interp *iPtr = (Interp *) interp;
    int curLevel, level, result;
    const char *name = NULL;

    /*
     * Parse object to figure out which level number to go to.
     */

TclNRUplevelObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{

    register Interp *iPtr = (Interp *) interp;
    CmdFrame *invoker = NULL;
    int word = 0;
    int result;
    CallFrame *savedVarFramePtr, *framePtr;
    Tcl_Obj *objPtr;

    if (objc < 2) {


static int
ProcWrongNumArgs(
    Tcl_Interp *interp,
    int skip)
{
    CallFrame *framePtr = ((Interp *)interp)->varFramePtr;
    register Proc *procPtr = framePtr->procPtr;
    int localCt = procPtr->numCompiledLocals, numArgs, i;
    Tcl_Obj **desiredObjs;
    const char *final = NULL;

    /*
     * Build up desired argument list for Tcl_WrongNumArgs
     */

    numArgs = framePtr->procPtr->numArgs;
    desiredObjs = TclStackAlloc(interp,
	    (int) sizeof(Tcl_Obj *) * (numArgs+1));

    if (framePtr->isProcCallFrame & FRAME_IS_LAMBDA) {
	desiredObjs[0] = Tcl_NewStringObj("lambdaExpr", -1);
    } else {
#ifdef AVOID_HACKS_FOR_ITCL
	desiredObjs[0] = framePtr->objv[skip-1];
#else
	desiredObjs[0] = Tcl_NewListObj(1, framePtr->objv + skip - 1);
#endif /* AVOID_HACKS_FOR_ITCL */
    }
    Tcl_IncrRefCount(desiredObjs[0]);

    if (localCt > 0) {
	register Var *defPtr = (Var *) (&framePtr->localCachePtr->varName0 + localCt);

	for (i=1 ; i<=numArgs ; i++, defPtr++) {
	    Tcl_Obj *argObj;
	    Tcl_Obj *namePtr = localName(framePtr, i-1);

	    if (defPtr->value.objPtr != NULL) {
		TclNewObj(argObj);

	/*
	 * Now invoke the resolvers to determine the exact variables that
	 * should be used.
	 */

	resVarInfo = localPtr->resolveInfo;
	if (resVarInfo && resVarInfo->fetchProc) {
	    register Var *resolvedVarPtr = (Var *)
		    resVarInfo->fetchProc(interp, resVarInfo);

	    if (resolvedVarPtr) {
		if (TclIsVarInHash(resolvedVarPtr)) {
		    VarHashRefCount(resolvedVarPtr)++;
		}
		varPtr->flags = VAR_LINK;

    Tcl_Interp *interp,
    LocalCache *localCachePtr)
{
    int i;
    Tcl_Obj **namePtrPtr = &localCachePtr->varName0;

    for (i = 0; i < localCachePtr->numVars; i++, namePtrPtr++) {
	register Tcl_Obj *objPtr = *namePtrPtr;

	if (objPtr) {
	    /* TclReleaseLiteral calls Tcl_DecrRefCount for us */
	    TclReleaseLiteral(interp, objPtr);
	}
    }
    ckfree(localCachePtr);

 *	are being referenced at runtime.
 *
 *----------------------------------------------------------------------
 */

static int
InitArgsAndLocals(
    register Tcl_Interp *interp,/* Interpreter in which procedure was
				 * invoked. */
    Tcl_Obj *procNameObj,	/* Procedure name for error reporting. */
    int skip)			/* Number of initial arguments to be skipped,
				 * i.e., words in the "command name". */
{
    CallFrame *framePtr = ((Interp *)interp)->varFramePtr;
    register Proc *procPtr = framePtr->procPtr;
    ByteCode *codePtr = procPtr->bodyPtr->internalRep.twoPtrValue.ptr1;
    register Var *varPtr, *defPtr;
    int localCt = procPtr->numCompiledLocals, numArgs, argCt, i, imax;
    Tcl_Obj *const *argObjs;

    /*
     * Make sure that the local cache of variable names and initial values has
     * been initialised properly .
     */

    /*
     * Create the "compiledLocals" array. Make sure it is large enough to hold
     * all the procedure's compiled local variables, including its formal
     * parameters.
     */

    varPtr = TclStackAlloc(interp, (int)(localCt * sizeof(Var)));
    framePtr->compiledLocals = varPtr;
    framePtr->numCompiledLocals = localCt;

    /*
     * Match and assign the call's actual parameters to the procedure's formal
     * arguments. The formal arguments are described by the first numArgs
     * entries in both the Proc structure's local variable list and the call

 *----------------------------------------------------------------------
 */

int
TclPushProcCallFrame(
    ClientData clientData,	/* Record describing procedure to be
				 * interpreted. */
    register Tcl_Interp *interp,/* Interpreter in which procedure was
				 * invoked. */
    int objc,			/* Count of number of arguments to this
				 * procedure. */
    Tcl_Obj *const objv[],	/* Argument value objects. */
    int isLambda)		/* 1 if this is a call by ApplyObjCmd: it
				 * needs special rules for error msg */
{

 *----------------------------------------------------------------------
 */

int
TclObjInterpProc(
    ClientData clientData,	/* Record describing procedure to be
				 * interpreted. */
    register Tcl_Interp *interp,/* Interpreter in which procedure was
				 * invoked. */
    int objc,			/* Count of number of arguments to this
				 * procedure. */
    Tcl_Obj *const objv[])	/* Argument value objects. */
{
    /*
     * Not used much in the core; external interface for iTcl
     */

    return Tcl_NRCallObjProc(interp, TclNRInterpProc, clientData, objc, objv);
}

int
TclNRInterpProc(
    ClientData clientData,	/* Record describing procedure to be
				 * interpreted. */
    register Tcl_Interp *interp,/* Interpreter in which procedure was
				 * invoked. */
    int objc,			/* Count of number of arguments to this
				 * procedure. */
    Tcl_Obj *const objv[])	/* Argument value objects. */
{
    int result = TclPushProcCallFrame(clientData, interp, objc, objv,
	    /*isLambda*/ 0);

 *	Nearly anything; depends on the commands in the procedure body.
 *
 *----------------------------------------------------------------------
 */

int
TclNRInterpProcCore(
    register Tcl_Interp *interp,/* Interpreter in which procedure was
				 * invoked. */
    Tcl_Obj *procNameObj,	/* Procedure name for error reporting. */
    int skip,			/* Number of initial arguments to be skipped,
				 * i.e., words in the "command name". */
    ProcErrorProc *errorProc)	/* How to convert results from the script into
				 * results of the overall procedure. */
{
    Interp *iPtr = (Interp *) interp;
    register Proc *procPtr = iPtr->varFramePtr->procPtr;
    int result;
    CallFrame *freePtr;
    ByteCode *codePtr;

    result = InitArgsAndLocals(interp, procNameObj, skip);
    if (result != TCL_OK) {
	freePtr = iPtr->framePtr;
	Tcl_PopCallFrame(interp);	/* Pop but do not free. */
	TclStackFree(interp, freePtr->compiledLocals);
					/* Free compiledLocals. */
	TclStackFree(interp, freePtr);	/* Free CallFrame. */
	return TCL_ERROR;
    }

#if defined(TCL_COMPILE_DEBUG)
    if (tclTraceExec >= 1) {
	register CallFrame *framePtr = iPtr->varFramePtr;
	register int i;

	if (framePtr->isProcCallFrame & FRAME_IS_LAMBDA) {
	    fprintf(stdout, "Calling lambda ");
	} else {
	    fprintf(stdout, "Calling proc ");
	}
	for (i = 0; i < framePtr->objc; i++) {

 *	Memory gets freed.
 *
 *----------------------------------------------------------------------
 */

void
TclProcCleanupProc(
    register Proc *procPtr)	/* Procedure to be deleted. */
{
    register CompiledLocal *localPtr;
    Tcl_Obj *bodyPtr = procPtr->bodyPtr;
    Tcl_Obj *defPtr;
    Tcl_ResolvedVarInfo *resVarInfo;
    Tcl_HashEntry *hePtr = NULL;
    CmdFrame *cfPtr = NULL;
    Interp *iPtr = procPtr->iPtr;

    }

    hePtr = Tcl_FindHashEntry(iPtr->linePBodyPtr, (char *) procPtr);
    if (!hePtr) {
	return;
    }

    cfPtr = Tcl_GetHashValue(hePtr);

    if (cfPtr) {
	if (cfPtr->type == TCL_LOCATION_SOURCE) {
	    Tcl_DecrRefCount(cfPtr->data.eval.path);
	    cfPtr->data.eval.path = NULL;
	}
	ckfree(cfPtr->line);

 *
 *----------------------------------------------------------------------
 */

static void
DupLambdaInternalRep(
    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
    register Tcl_Obj *copyPtr)	/* Object with internal rep to set. */
{
    Proc *procPtr = srcPtr->internalRep.twoPtrValue.ptr1;
    Tcl_Obj *nsObjPtr = srcPtr->internalRep.twoPtrValue.ptr2;

    copyPtr->internalRep.twoPtrValue.ptr1 = procPtr;
    copyPtr->internalRep.twoPtrValue.ptr2 = nsObjPtr;

    procPtr->refCount++;
    Tcl_IncrRefCount(nsObjPtr);
    copyPtr->typePtr = &tclLambdaType;
}

static void
FreeLambdaInternalRep(
    register Tcl_Obj *objPtr)	/* CmdName object with internal representation
				 * to free. */
{
    Proc *procPtr = objPtr->internalRep.twoPtrValue.ptr1;
    Tcl_Obj *nsObjPtr = objPtr->internalRep.twoPtrValue.ptr2;

    if (procPtr->refCount-- == 1) {
	TclProcCleanupProc(procPtr);
    }
    TclDecrRefCount(nsObjPtr);
    objPtr->typePtr = NULL;
}

static int
SetLambdaFromAny(
    Tcl_Interp *interp,		/* Used for error reporting if not NULL. */
    register Tcl_Obj *objPtr)	/* The object to convert. */
{
    Interp *iPtr = (Interp *) interp;
    const char *name;
    Tcl_Obj *argsPtr, *bodyPtr, *nsObjPtr, **objv;
    int isNew, objc, result;
    CmdFrame *cfPtr = NULL;
    Proc *procPtr;

    if (!Tcl_UtfCharComplete(buffer + 1, offset)) {
	/* Cannot scan a complete sequence from the data */

	Tcl_SetObjResult(interp, Tcl_NewIntObj(0));
	return TCL_OK;
    }

    first = result = TclUtfNext(buffer + 1);
    while ((buffer[0] = *p++) != '\0') {
	/* Run Tcl_UtfNext with many more possible bytes at src[-1], all should give the same result */
	result = TclUtfNext(buffer + 1);
	if (first != result) {
	    Tcl_AppendResult(interp, "Tcl_UtfNext is not supposed to read src[-1]", NULL);
	    return TCL_ERROR;
	}
    }
    p = tobetested;
    while ((buffer[numBytes + 1] = *p++) != '\0') {
	/* Run Tcl_UtfNext with many more possible bytes at src[end], all should give the same result */
	result = TclUtfNext(buffer + 1);
	if (first != result) {
	    first = buffer;
	    break;
	}
    }

    Tcl_SetObjResult(interp, Tcl_NewIntObj(first - buffer - 1));

	/* When bytes is NUL-terminated, returns 0 <= trimLeft <= numBytes */
	trimLeft = TclTrimLeft(bytes, numBytes, trim, numTrim);
	numBytes -= trimLeft;

	/* If we did not trim the whole string, it starts with a character
	 * that we will not trim. Skip over it. */
	if (numBytes > 0) {

	    const char *first = bytes + trimLeft;
	    bytes = TclUtfNext(first);
	    numBytes -= (bytes - first);

	    if (numBytes > 0) {
		/* When bytes is NUL-terminated, returns
		 * 0 <= trimRight <= numBytes */
		trimRight = TclTrimRight(bytes, numBytes, trim, numTrim);
	    }

 * object that already has a valid string rep, it will leak memory.
 *
 *----------------------------------------------------------------------
 */

static void
UpdateStringOfEndOffset(
    register Tcl_Obj *objPtr)
{
    char buffer[TCL_INTEGER_SPACE + 5];
    register int len = 3;

    memcpy(buffer, "end", 4);
    if (objPtr->internalRep.longValue != 0) {
	buffer[len++] = '-';
	len += TclFormatInt(buffer+len, -(objPtr->internalRep.longValue));
    }
    objPtr->bytes = (char *)ckalloc(len+1);

static int
SetEndOffsetFromAny(
    Tcl_Interp *interp,		/* Tcl interpreter or NULL */
    Tcl_Obj *objPtr)		/* Pointer to the object to parse */
{
    int offset;			/* Offset in the "end-offset" expression */
    register const char *bytes;	/* String rep of the object */
    int length;			/* Length of the object's string rep */

    /*
     * If it's already the right type, we're fine.
     */

    if (objPtr->typePtr == &tclEndOffsetType) {