/* * tclTestObj.c -- * * This file contains C command procedures for the additional Tcl * commands that are used for testing implementations of the Tcl object * types. These commands are not normally included in Tcl * applications; they're only used for testing. * * Copyright (c) 1995-1998 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: tclTestObj.c,v 1.1.2.3 1998/12/01 05:01:01 stanton Exp $ */ #include "tclInt.h" /* * An array of Tcl_Obj pointers used in the commands that operate on or get * the values of Tcl object-valued variables. varPtr[i] is the i-th * variable's Tcl_Obj *. */ #define NUMBER_OF_OBJECT_VARS 20 static Tcl_Obj *varPtr[NUMBER_OF_OBJECT_VARS]; /* * Forward declarations for procedures defined later in this file: */ static int CheckIfVarUnset _ANSI_ARGS_((Tcl_Interp *interp, int varIndex)); static int GetVariableIndex _ANSI_ARGS_((Tcl_Interp *interp, char *string, int *indexPtr)); static void SetVarToObj _ANSI_ARGS_((int varIndex, Tcl_Obj *objPtr)); int TclObjTest_Init _ANSI_ARGS_((Tcl_Interp *interp)); static int TestbooleanobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TestconvertobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TestdoubleobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TestindexobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TestintobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TestobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int TeststringobjCmd _ANSI_ARGS_((ClientData dummy, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); /* *---------------------------------------------------------------------- * * TclObjTest_Init -- * * This procedure creates additional commands that are used to test the * Tcl object support. * * Results: * Returns a standard Tcl completion code, and leaves an error * message in the interp's result if an error occurs. * * Side effects: * Creates and registers several new testing commands. * *---------------------------------------------------------------------- */ int TclObjTest_Init(interp) Tcl_Interp *interp; { register int i; for (i = 0; i < NUMBER_OF_OBJECT_VARS; i++) { varPtr[i] = NULL; } Tcl_CreateObjCommand(interp, "testbooleanobj", TestbooleanobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "testconvertobj", TestconvertobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "testdoubleobj", TestdoubleobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "testintobj", TestintobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "testindexobj", TestindexobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "testobj", TestobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); Tcl_CreateObjCommand(interp, "teststringobj", TeststringobjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL); return TCL_OK; } /* *---------------------------------------------------------------------- * * TestbooleanobjCmd -- * * This procedure implements the "testbooleanobj" command. It is used * to test the boolean Tcl object type implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees boolean objects, and also converts objects to * have boolean type. * *---------------------------------------------------------------------- */ static int TestbooleanobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int varIndex, boolValue; char *index, *subCmd; if (objc < 3) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } subCmd = Tcl_GetString(objv[1]); if (strcmp(subCmd, "set") == 0) { if (objc != 4) { goto wrongNumArgs; } if (Tcl_GetBooleanFromObj(interp, objv[3], &boolValue) != TCL_OK) { return TCL_ERROR; } /* * If the object currently bound to the variable with index varIndex * has ref count 1 (i.e. the object is unshared) we can modify that * object directly. Otherwise, if RC>1 (i.e. the object is shared), * we must create a new object to modify/set and decrement the old * formerly-shared object's ref count. This is "copy on write". */ if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetBooleanObj(varPtr[varIndex], boolValue); } else { SetVarToObj(varIndex, Tcl_NewBooleanObj(boolValue)); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "get") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "not") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetBooleanFromObj(interp, varPtr[varIndex], &boolValue) != TCL_OK) { return TCL_ERROR; } if (!Tcl_IsShared(varPtr[varIndex])) { Tcl_SetBooleanObj(varPtr[varIndex], !boolValue); } else { SetVarToObj(varIndex, Tcl_NewBooleanObj(!boolValue)); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad option \"", Tcl_GetString(objv[1]), "\": must be set, get, or not", (char *) NULL); return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * TestconvertobjCmd -- * * This procedure implements the "testconvertobj" command. It is used * to test converting objects to new types. * * Results: * A standard Tcl object result. * * Side effects: * Converts objects to new types. * *---------------------------------------------------------------------- */ static int TestconvertobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { char *subCmd; char buf[20]; if (objc < 3) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } subCmd = Tcl_GetString(objv[1]); if (strcmp(subCmd, "double") == 0) { double d; if (objc != 3) { goto wrongNumArgs; } if (Tcl_GetDoubleFromObj(interp, objv[2], &d) != TCL_OK) { return TCL_ERROR; } sprintf(buf, "%f", d); Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1); } else { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad option \"", Tcl_GetString(objv[1]), "\": must be double", (char *) NULL); return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * TestdoubleobjCmd -- * * This procedure implements the "testdoubleobj" command. It is used * to test the double-precision floating point Tcl object type * implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees double objects, and also converts objects to * have double type. * *---------------------------------------------------------------------- */ static int TestdoubleobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int varIndex; double doubleValue; char *index, *subCmd, *string; if (objc < 3) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } subCmd = Tcl_GetString(objv[1]); if (strcmp(subCmd, "set") == 0) { if (objc != 4) { goto wrongNumArgs; } string = Tcl_GetString(objv[3]); if (Tcl_GetDouble(interp, string, &doubleValue) != TCL_OK) { return TCL_ERROR; } /* * If the object currently bound to the variable with index varIndex * has ref count 1 (i.e. the object is unshared) we can modify that * object directly. Otherwise, if RC>1 (i.e. the object is shared), * we must create a new object to modify/set and decrement the old * formerly-shared object's ref count. This is "copy on write". */ if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetDoubleObj(varPtr[varIndex], doubleValue); } else { SetVarToObj(varIndex, Tcl_NewDoubleObj(doubleValue)); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "get") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "mult10") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetDoubleFromObj(interp, varPtr[varIndex], &doubleValue) != TCL_OK) { return TCL_ERROR; } if (!Tcl_IsShared(varPtr[varIndex])) { Tcl_SetDoubleObj(varPtr[varIndex], (doubleValue * 10.0)); } else { SetVarToObj(varIndex, Tcl_NewDoubleObj( (doubleValue * 10.0) )); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "div10") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetDoubleFromObj(interp, varPtr[varIndex], &doubleValue) != TCL_OK) { return TCL_ERROR; } if (!Tcl_IsShared(varPtr[varIndex])) { Tcl_SetDoubleObj(varPtr[varIndex], (doubleValue / 10.0)); } else { SetVarToObj(varIndex, Tcl_NewDoubleObj( (doubleValue / 10.0) )); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad option \"", Tcl_GetString(objv[1]), "\": must be set, get, mult10, or div10", (char *) NULL); return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * TestindexobjCmd -- * * This procedure implements the "testindexobj" command. It is used to * test the index Tcl object type implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees int objects, and also converts objects to * have int type. * *---------------------------------------------------------------------- */ static int TestindexobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int allowAbbrev, index, index2, setError, i, result; char **argv; static char *tablePtr[] = {"a", "b", "check", (char *) NULL}; if ((objc == 3) && (strcmp(Tcl_GetString(objv[1]), "check") == 0)) { /* * This code checks to be sure that the results of * Tcl_GetIndexFromObj are properly cached in the object and * returned on subsequent lookups. */ Tcl_GetIndexFromObj((Tcl_Interp *) NULL, objv[1], tablePtr, "token", 0, &index); if (Tcl_GetIntFromObj(interp, objv[2], &index2) != TCL_OK) { return TCL_ERROR; } objv[1]->internalRep.twoPtrValue.ptr2 = (VOID *) index2; result = Tcl_GetIndexFromObj((Tcl_Interp *) NULL, objv[1], tablePtr, "token", 0, &index); if (result == TCL_OK) { Tcl_SetIntObj(Tcl_GetObjResult(interp), index); } return result; } if (objc < 5) { Tcl_AppendToObj(Tcl_GetObjResult(interp), "wrong # args", -1); return TCL_ERROR; } if (Tcl_GetBooleanFromObj(interp, objv[1], &setError) != TCL_OK) { return TCL_ERROR; } if (Tcl_GetBooleanFromObj(interp, objv[2], &allowAbbrev) != TCL_OK) { return TCL_ERROR; } argv = (char **) ckalloc((unsigned) ((objc-3) * sizeof(char *))); for (i = 4; i < objc; i++) { argv[i-4] = Tcl_GetString(objv[i]); } argv[objc-4] = NULL; /* * Tcl_GetIndexFromObj assumes that the table is statically-allocated * so that its address is different for each index object. If we * accidently allocate a table at the same address as that cached in * the index object, clear out the object's cached state. */ if ((objv[3]->typePtr == Tcl_GetObjType("index")) && (objv[3]->internalRep.twoPtrValue.ptr1 == (VOID *) argv)) { objv[3]->typePtr = NULL; } result = Tcl_GetIndexFromObj((setError? interp : NULL), objv[3], argv, "token", (allowAbbrev? 0 : TCL_EXACT), &index); ckfree((char *) argv); if (result == TCL_OK) { Tcl_SetIntObj(Tcl_GetObjResult(interp), index); } return result; } /* *---------------------------------------------------------------------- * * TestintobjCmd -- * * This procedure implements the "testintobj" command. It is used to * test the int Tcl object type implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees int objects, and also converts objects to * have int type. * *---------------------------------------------------------------------- */ static int TestintobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int intValue, varIndex, i; long longValue; char *index, *subCmd, *string; if (objc < 3) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } subCmd = Tcl_GetString(objv[1]); if (strcmp(subCmd, "set") == 0) { if (objc != 4) { goto wrongNumArgs; } string = Tcl_GetString(objv[3]); if (Tcl_GetInt(interp, string, &i) != TCL_OK) { return TCL_ERROR; } intValue = i; /* * If the object currently bound to the variable with index varIndex * has ref count 1 (i.e. the object is unshared) we can modify that * object directly. Otherwise, if RC>1 (i.e. the object is shared), * we must create a new object to modify/set and decrement the old * formerly-shared object's ref count. This is "copy on write". */ if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetIntObj(varPtr[varIndex], intValue); } else { SetVarToObj(varIndex, Tcl_NewIntObj(intValue)); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "set2") == 0) { /* doesn't set result */ if (objc != 4) { goto wrongNumArgs; } string = Tcl_GetString(objv[3]); if (Tcl_GetInt(interp, string, &i) != TCL_OK) { return TCL_ERROR; } intValue = i; if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetIntObj(varPtr[varIndex], intValue); } else { SetVarToObj(varIndex, Tcl_NewIntObj(intValue)); } } else if (strcmp(subCmd, "setlong") == 0) { if (objc != 4) { goto wrongNumArgs; } string = Tcl_GetString(objv[3]); if (Tcl_GetInt(interp, string, &i) != TCL_OK) { return TCL_ERROR; } intValue = i; if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetLongObj(varPtr[varIndex], intValue); } else { SetVarToObj(varIndex, Tcl_NewLongObj(intValue)); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "setmaxlong") == 0) { long maxLong = LONG_MAX; if (objc != 3) { goto wrongNumArgs; } if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetLongObj(varPtr[varIndex], maxLong); } else { SetVarToObj(varIndex, Tcl_NewLongObj(maxLong)); } } else if (strcmp(subCmd, "ismaxlong") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetLongFromObj(interp, varPtr[varIndex], &longValue) != TCL_OK) { return TCL_ERROR; } Tcl_AppendToObj(Tcl_GetObjResult(interp), ((longValue == LONG_MAX)? "1" : "0"), -1); } else if (strcmp(subCmd, "get") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "get2") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } string = Tcl_GetString(varPtr[varIndex]); Tcl_AppendToObj(Tcl_GetObjResult(interp), string, -1); } else if (strcmp(subCmd, "inttoobigtest") == 0) { /* * If long ints have more bits than ints on this platform, verify * that Tcl_GetIntFromObj returns an error if the long int held * in an integer object's internal representation is too large * to fit in an int. */ if (objc != 3) { goto wrongNumArgs; } #if (INT_MAX == LONG_MAX) /* int is same size as long int */ Tcl_AppendToObj(Tcl_GetObjResult(interp), "1", -1); #else if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetLongObj(varPtr[varIndex], LONG_MAX); } else { SetVarToObj(varIndex, Tcl_NewLongObj(LONG_MAX)); } if (Tcl_GetIntFromObj(interp, varPtr[varIndex], &i) != TCL_OK) { Tcl_ResetResult(interp); Tcl_AppendToObj(Tcl_GetObjResult(interp), "1", -1); return TCL_OK; } Tcl_AppendToObj(Tcl_GetObjResult(interp), "0", -1); #endif } else if (strcmp(subCmd, "mult10") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetIntFromObj(interp, varPtr[varIndex], &intValue) != TCL_OK) { return TCL_ERROR; } if (!Tcl_IsShared(varPtr[varIndex])) { Tcl_SetIntObj(varPtr[varIndex], (intValue * 10)); } else { SetVarToObj(varIndex, Tcl_NewIntObj( (intValue * 10) )); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "div10") == 0) { if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (Tcl_GetIntFromObj(interp, varPtr[varIndex], &intValue) != TCL_OK) { return TCL_ERROR; } if (!Tcl_IsShared(varPtr[varIndex])) { Tcl_SetIntObj(varPtr[varIndex], (intValue / 10)); } else { SetVarToObj(varIndex, Tcl_NewIntObj( (intValue / 10) )); } Tcl_SetObjResult(interp, varPtr[varIndex]); } else { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad option \"", Tcl_GetString(objv[1]), "\": must be set, get, get2, mult10, or div10", (char *) NULL); return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * TestobjCmd -- * * This procedure implements the "testobj" command. It is used to test * the type-independent portions of the Tcl object type implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees objects. * *---------------------------------------------------------------------- */ static int TestobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int varIndex, destIndex, i; char *index, *subCmd, *string; Tcl_ObjType *targetType; if (objc < 2) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } subCmd = Tcl_GetString(objv[1]); if (strcmp(subCmd, "assign") == 0) { if (objc != 4) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } string = Tcl_GetString(objv[3]); if (GetVariableIndex(interp, string, &destIndex) != TCL_OK) { return TCL_ERROR; } SetVarToObj(destIndex, varPtr[varIndex]); Tcl_SetObjResult(interp, varPtr[destIndex]); } else if (strcmp(subCmd, "convert") == 0) { char *typeName; if (objc != 4) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } typeName = Tcl_GetString(objv[3]); if ((targetType = Tcl_GetObjType(typeName)) == NULL) { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "no type ", typeName, " found", (char *) NULL); return TCL_ERROR; } if (Tcl_ConvertToType(interp, varPtr[varIndex], targetType) != TCL_OK) { return TCL_ERROR; } Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "duplicate") == 0) { if (objc != 4) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } string = Tcl_GetString(objv[3]); if (GetVariableIndex(interp, string, &destIndex) != TCL_OK) { return TCL_ERROR; } SetVarToObj(destIndex, Tcl_DuplicateObj(varPtr[varIndex])); Tcl_SetObjResult(interp, varPtr[destIndex]); } else if (strcmp(subCmd, "freeallvars") == 0) { if (objc != 2) { goto wrongNumArgs; } for (i = 0; i < NUMBER_OF_OBJECT_VARS; i++) { if (varPtr[i] != NULL) { Tcl_DecrRefCount(varPtr[i]); varPtr[i] = NULL; } } } else if (strcmp(subCmd, "newobj") == 0) { if (objc != 3) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } SetVarToObj(varIndex, Tcl_NewObj()); Tcl_SetObjResult(interp, varPtr[varIndex]); } else if (strcmp(subCmd, "refcount") == 0) { char buf[TCL_INTEGER_SPACE]; if (objc != 3) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } TclFormatInt(buf, varPtr[varIndex]->refCount); Tcl_SetResult(interp, buf, TCL_VOLATILE); } else if (strcmp(subCmd, "type") == 0) { if (objc != 3) { goto wrongNumArgs; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } if (varPtr[varIndex]->typePtr == NULL) { /* a string! */ Tcl_AppendToObj(Tcl_GetObjResult(interp), "string", -1); } else { Tcl_AppendToObj(Tcl_GetObjResult(interp), varPtr[varIndex]->typePtr->name, -1); } } else if (strcmp(subCmd, "types") == 0) { if (objc != 2) { goto wrongNumArgs; } if (Tcl_AppendAllObjTypes(interp, Tcl_GetObjResult(interp)) != TCL_OK) { return TCL_ERROR; } } else { Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "bad option \"", Tcl_GetString(objv[1]), "\": must be assign, convert, duplicate, freeallvars, ", "newobj, objcount, refcount, type, or types", (char *) NULL); return TCL_ERROR; } return TCL_OK; } /* *---------------------------------------------------------------------- * * TeststringobjCmd -- * * This procedure implements the "teststringobj" command. It is used to * test the string Tcl object type implementation. * * Results: * A standard Tcl object result. * * Side effects: * Creates and frees string objects, and also converts objects to * have string type. * *---------------------------------------------------------------------- */ static int TeststringobjCmd(clientData, interp, objc, objv) ClientData clientData; /* Not used. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { int varIndex, option, i, length; #define MAX_STRINGS 11 char *index, *string, *strings[MAX_STRINGS+1]; static char *options[] = { "append", "appendstrings", "get", "get2", "length", "length2", "set", "set2", "setlength", (char *) NULL }; if (objc < 3) { wrongNumArgs: Tcl_WrongNumArgs(interp, 1, objv, "option arg ?arg ...?"); return TCL_ERROR; } index = Tcl_GetString(objv[2]); if (GetVariableIndex(interp, index, &varIndex) != TCL_OK) { return TCL_ERROR; } if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0, &option) != TCL_OK) { return TCL_ERROR; } switch (option) { case 0: /* append */ if (objc != 5) { goto wrongNumArgs; } if (Tcl_GetIntFromObj(interp, objv[4], &length) != TCL_OK) { return TCL_ERROR; } if (varPtr[varIndex] == NULL) { SetVarToObj(varIndex, Tcl_NewObj()); } /* * If the object bound to variable "varIndex" is shared, we must * "copy on write" and append to a copy of the object. */ if (Tcl_IsShared(varPtr[varIndex])) { SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex])); } string = Tcl_GetString(objv[3]); Tcl_AppendToObj(varPtr[varIndex], string, length); Tcl_SetObjResult(interp, varPtr[varIndex]); break; case 1: /* appendstrings */ if (objc > (MAX_STRINGS+3)) { goto wrongNumArgs; } if (varPtr[varIndex] == NULL) { SetVarToObj(varIndex, Tcl_NewObj()); } /* * If the object bound to variable "varIndex" is shared, we must * "copy on write" and append to a copy of the object. */ if (Tcl_IsShared(varPtr[varIndex])) { SetVarToObj(varIndex, Tcl_DuplicateObj(varPtr[varIndex])); } for (i = 3; i < objc; i++) { strings[i-3] = Tcl_GetString(objv[i]); } for ( ; i < 12 + 3; i++) { strings[i - 3] = NULL; } Tcl_AppendStringsToObj(varPtr[varIndex], strings[0], strings[1], strings[2], strings[3], strings[4], strings[5], strings[6], strings[7], strings[8], strings[9], strings[10], strings[11]); Tcl_SetObjResult(interp, varPtr[varIndex]); break; case 2: /* get */ if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } Tcl_SetObjResult(interp, varPtr[varIndex]); break; case 3: /* get2 */ if (objc != 3) { goto wrongNumArgs; } if (CheckIfVarUnset(interp, varIndex)) { return TCL_ERROR; } string = Tcl_GetString(varPtr[varIndex]); Tcl_AppendToObj(Tcl_GetObjResult(interp), string, -1); break; case 4: /* length */ if (objc != 3) { goto wrongNumArgs; } Tcl_SetIntObj(Tcl_GetObjResult(interp), (varPtr[varIndex] != NULL) ? varPtr[varIndex]->length : -1); break; case 5: /* length2 */ if (objc != 3) { goto wrongNumArgs; } Tcl_SetIntObj(Tcl_GetObjResult(interp), (varPtr[varIndex] != NULL) ? (int) varPtr[varIndex]->internalRep.longValue : -1); break; case 6: /* set */ if (objc != 4) { goto wrongNumArgs; } /* * If the object currently bound to the variable with index * varIndex has ref count 1 (i.e. the object is unshared) we * can modify that object directly. Otherwise, if RC>1 (i.e. * the object is shared), we must create a new object to * modify/set and decrement the old formerly-shared object's * ref count. This is "copy on write". */ string = Tcl_GetStringFromObj(objv[3], &length); if ((varPtr[varIndex] != NULL) && !Tcl_IsShared(varPtr[varIndex])) { Tcl_SetStringObj(varPtr[varIndex], string, length); } else { SetVarToObj(varIndex, Tcl_NewStringObj(string, length)); } Tcl_SetObjResult(interp, varPtr[varIndex]); break; case 7: /* set2 */ if (objc != 4) { goto wrongNumArgs; } SetVarToObj(varIndex, objv[3]); break; case 8: /* setlength */ if (objc != 4) { goto wrongNumArgs; } if (Tcl_GetIntFromObj(interp, objv[3], &length) != TCL_OK) { return TCL_ERROR; } if (varPtr[varIndex] != NULL) { Tcl_SetObjLength(varPtr[varIndex], length); } break; } return TCL_OK; } /* *---------------------------------------------------------------------- * * SetVarToObj -- * * Utility routine to assign a Tcl_Obj* to a test variable. The * Tcl_Obj* can be NULL. * * Results: * None. * * Side effects: * This routine handles ref counting details for assignment: * i.e. the old value's ref count must be decremented (if not NULL) and * the new one incremented (also if not NULL). * *---------------------------------------------------------------------- */ static void SetVarToObj(varIndex, objPtr) int varIndex; /* Designates the assignment variable. */ Tcl_Obj *objPtr; /* Points to object to assign to var. */ { if (varPtr[varIndex] != NULL) { Tcl_DecrRefCount(varPtr[varIndex]); } varPtr[varIndex] = objPtr; if (objPtr != NULL) { Tcl_IncrRefCount(objPtr); } } /* *---------------------------------------------------------------------- * * GetVariableIndex -- * * Utility routine to get a test variable index from the command line. * * Results: * A standard Tcl object result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int GetVariableIndex(interp, string, indexPtr) Tcl_Interp *interp; /* Interpreter for error reporting. */ char *string; /* String containing a variable index * specified as a nonnegative number less * than NUMBER_OF_OBJECT_VARS. */ int *indexPtr; /* Place to store converted result. */ { int index; if (Tcl_GetInt(interp, string, &index) != TCL_OK) { return TCL_ERROR; } if (index < 0 || index >= NUMBER_OF_OBJECT_VARS) { Tcl_ResetResult(interp); Tcl_AppendToObj(Tcl_GetObjResult(interp), "bad variable index", -1); return TCL_ERROR; } *indexPtr = index; return TCL_OK; } /* *---------------------------------------------------------------------- * * CheckIfVarUnset -- * * Utility procedure that checks whether a test variable is readable: * i.e., that varPtr[varIndex] is non-NULL. * * Results: * 1 if the test variable is unset (NULL); 0 otherwise. * * Side effects: * Sets the interpreter result to an error message if the variable is * unset (NULL). * *---------------------------------------------------------------------- */ static int CheckIfVarUnset(interp, varIndex) Tcl_Interp *interp; /* Interpreter for error reporting. */ int varIndex; /* Index of the test variable to check. */ { if (varPtr[varIndex] == NULL) { char buf[32 + TCL_INTEGER_SPACE]; sprintf(buf, "variable %d is unset (NULL)", varIndex); Tcl_ResetResult(interp); Tcl_AppendToObj(Tcl_GetObjResult(interp), buf, -1); return 1; } return 0; }