Tcl Source Code

static int		CheckOneByte(Tcl_Interp*, int);
static int		CheckSignedOneByte(Tcl_Interp*, int);
static int		CheckStack(AssemblyEnv*);
static int		CheckStrictlyPositive(Tcl_Interp*, int);
static ByteCode *	CompileAssembleObj(Tcl_Interp *interp,
			    Tcl_Obj *objPtr);
static void		CompileEmbeddedScript(AssemblyEnv*, Tcl_Token*,
			    const TalInstDesc*);
static int		DefineLabel(AssemblyEnv* envPtr, const char* label);
static void		DeleteMirrorJumpTable(JumptableInfo* jtPtr);
static void		DupAssembleCodeInternalRep(Tcl_Obj* src,
			    Tcl_Obj* dest);
static void		FillInJumpOffsets(AssemblyEnv*);
static int		CreateMirrorJumpTable(AssemblyEnv* assemEnvPtr,
			    Tcl_Obj* jumpTable);

#define TCL_NO_LARGE_INDEX 1	/* Do not return localIndex value > 255 */

/*
 * Source instructions recognized in the Tcl Assembly Language (TAL)
 */

static const TalInstDesc TalInstructionTable[] = {
    /* PUSH must be first, see the code near the end of TclAssembleCode */
    {"push",		ASSEM_PUSH,	(INST_PUSH1<<8
					 | INST_PUSH4),		0,	1},

    {"add",		ASSEM_1BYTE,	INST_ADD,		2,	1},
    {"append",		ASSEM_LVT,	(INST_APPEND_SCALAR1<<8
					 | INST_APPEND_SCALAR4),1,	1},

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

static void
CompileEmbeddedScript(
    AssemblyEnv* assemEnvPtr,	/* Assembly environment */
    Tcl_Token* tokenPtr,	/* Tcl_Token containing the script */
    const TalInstDesc* instPtr)	/* Instruction that determines whether
				 * the script is 'expr' or 'eval' */
{
    CompileEnv* envPtr = assemEnvPtr->envPtr;
				/* Compilation environment */
    Tcl_Interp* interp = (Tcl_Interp*) envPtr->iPtr;
				/* Tcl interpreter */

static Tcl_Obj *	GetCommandSource(Interp *iPtr, int objc,
			    Tcl_Obj *const objv[], int lookup);
static void		MathFuncWrongNumArgs(Tcl_Interp *interp, int expected,
			    int actual, Tcl_Obj *const *objv);
static Tcl_NRPostProc	NRCoroutineActivateCallback;
static Tcl_NRPostProc	NRCoroutineCallerCallback;
static Tcl_NRPostProc	NRCoroutineExitCallback;
static int NRCommand(ClientData data[], Tcl_Interp *interp, int result);

static Tcl_NRPostProc	NRRunObjProc;
static Tcl_NRPostProc	NRTailcallEval;
static Tcl_ObjCmdProc	OldMathFuncProc;
static void		OldMathFuncDeleteProc(ClientData clientData);
static void		ProcessUnexpectedResult(Tcl_Interp *interp,
			    int returnCode);
static int		RewindCoroutine(CoroutineData *corPtr, int result);

	TOP_CB(interp) = callbackPtr->nextPtr;
	result = procPtr(callbackPtr->data, interp, result);
	TCLNR_FREE(interp, callbackPtr);
    }
    return result;
}

static int
NRCommand(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Interp *iPtr = (Interp *) interp;
    Command *cmdPtr = data[0];

    NRE_ASSERT(COR_IS_SUSPENDED(corPtr));
    NRE_ASSERT(corPtr->eePtr != NULL);
    NRE_ASSERT(corPtr->eePtr != iPtr->execEnvPtr);

    corPtr->eePtr->rewind = 1;
    TclNRAddCallback(interp, RewindCoroutineCallback, state,
	    NULL, NULL, NULL);
    return TclNRInterpCoroutine(corPtr, interp, 0, NULL);
}

static void
DeleteCoroutine(
    ClientData clientData)
{
    CoroutineData *corPtr = clientData;

    if (objc < 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "coroName cmd ?arg1 arg2 ...?");
	return TCL_ERROR;
    }

    cmdPtr = (Command *) Tcl_GetCommandFromObj(interp, objv[1]);
    if ((!cmdPtr) || (cmdPtr->nreProc != TclNRInterpCoroutine)) {
        Tcl_AppendResult(interp, "can only inject a command into a coroutine",
                NULL);
        Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "COROUTINE",
                TclGetString(objv[1]), NULL);
        return TCL_ERROR;
    }

    TclNREvalObjEx(interp, Tcl_NewListObj(objc-2, objv+2), 0, NULL, INT_MIN);
    iPtr->execEnvPtr = savedEEPtr;

    return TCL_OK;
}

int
TclNRInterpCoroutine(
    ClientData clientData,
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    CoroutineData *corPtr = clientData;

    if (nsPtr != iPtr->globalNsPtr) {
	Tcl_DStringAppend(&ds, nsPtr->fullName, -1);
	Tcl_DStringAppend(&ds, "::", 2);
    }
    Tcl_DStringAppend(&ds, procName, -1);

    cmdPtr = (Command *) Tcl_NRCreateCommand(interp, Tcl_DStringValue(&ds),
	    /*objProc*/ NULL, TclNRInterpCoroutine, corPtr, DeleteCoroutine);
    Tcl_DStringFree(&ds);

    corPtr->cmdPtr = cmdPtr;
    cmdPtr->refCount++;

    /*
     * #280.


/*
 *----------------------------------------------------------------
 * Procedures exported by tclBasic.c to be used within the engine.
 *----------------------------------------------------------------
 */


MODULE_SCOPE Tcl_ObjCmdProc	TclNRInterpCoroutine;

/*
 *----------------------------------------------------------------
 * Procedures exported by the engine to be used by tclBasic.c
 *----------------------------------------------------------------
 */

 *   [email protected]
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include "tclCompile.h" /* for TclLogCommandInfo visibility */

/*
 * Thread-local storage used to avoid having a global lock on data that is not
 * limited to a single interpreter.
 */

typedef struct ThreadSpecificData {

     * NOTE: we could avoid traversing the ns's command list by keeping a
     * separate list of coros.
     */

    for (entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
	    entryPtr != NULL;) {
	cmdPtr = Tcl_GetHashValue(entryPtr);
	if (cmdPtr->nreProc == TclNRInterpCoroutine) {
	    Tcl_DeleteCommandFromToken((Tcl_Interp *) iPtr,
		    (Tcl_Command) cmdPtr);
	    entryPtr = Tcl_FirstHashEntry(&nsPtr->cmdTable, &search);
	} else {
	    entryPtr = Tcl_NextHashEntry(&search);
	}
    }