1 files changed, 144 insertions, 113 deletions

diff --git a/generic/tclPkg.c b/generic/tclPkg.c
index b3396e6..5b09ddb 100644
--- a/generic/tclPkg.c
+++ b/generic/tclPkg.c
@@ -46,7 +46,7 @@ typedef struct Package {
 				 * exist in this interpreter yet. */
     PkgAvail *availPtr;		/* First in list of all available versions of
 				 * this package. */
-    ClientData clientData;	/* Client data. */
+    const void *clientData;	/* Client data. */
 } Package;
 
 /*
@@ -71,7 +71,7 @@ static void		AddRequirementsToDString(Tcl_DString *dstring,
 static Package *	FindPackage(Tcl_Interp *interp, const char *name);
 static const char *	PkgRequireCore(Tcl_Interp *interp, const char *name,
 			    int reqc, Tcl_Obj *const reqv[],
-			    ClientData *clientDataPtr);
+			    void *clientDataPtr);
 
 /*
  * Helper macros.
@@ -122,7 +122,7 @@ Tcl_PkgProvideEx(
 				 * available. */
     const char *name,		/* Name of package. */
     const char *version,	/* Version string for package. */
-    ClientData clientData)	/* clientdata for this package (normally used
+    const void *clientData)	/* clientdata for this package (normally used
 				 * for C callback function table) */
 {
     Package *pkgPtr;
@@ -154,8 +154,10 @@ Tcl_PkgProvideEx(
 	}
 	return TCL_OK;
     }
-    Tcl_AppendResult(interp, "conflicting versions provided for package \"",
-	    name, "\": ", pkgPtr->version, ", then ", version, NULL);
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+	    "conflicting versions provided for package \"%s\": %s, then %s",
+	    name, pkgPtr->version, version));
+    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT", NULL);
     return TCL_ERROR;
 }
 
@@ -210,7 +212,7 @@ Tcl_PkgRequireEx(
     int exact,			/* Non-zero means that only the particular
 				 * version given is acceptable. Zero means use
 				 * the latest compatible version. */
-    ClientData *clientDataPtr)	/* Used to return the client data for this
+    void *clientDataPtr)	/* Used to return the client data for this
 				 * package. If it is NULL then the client data
 				 * is not returned. This is unchanged if this
 				 * call fails for any reason. */
@@ -283,9 +285,10 @@ Tcl_PkgRequireEx(
 	 */
 
 	tclEmptyStringRep = &tclEmptyString;
-	Tcl_AppendResult(interp, "Cannot load package \"", name,
-		"\" in standalone executable: This package is not "
-		"compiled with stub support", NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"Cannot load package \"%s\" in standalone executable:"
+		" This package is not compiled with stub support", name));
+	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNSTUBBED", NULL);
 	return NULL;
     }
 
@@ -321,7 +324,7 @@ Tcl_PkgRequireProc(
 				 * version. */
     Tcl_Obj *const reqv[],	/* 0 means to use the latest version
 				 * available. */
-    ClientData *clientDataPtr)
+    void *clientDataPtr)
 {
     const char *result =
 	    PkgRequireCore(interp, name, reqc, reqv, clientDataPtr);
@@ -342,7 +345,7 @@ PkgRequireCore(
 				 * version. */
     Tcl_Obj *const reqv[],	/* 0 means to use the latest version
 				 * available. */
-    ClientData *clientDataPtr)
+    void *clientDataPtr)
 {
     Interp *iPtr = (Interp *) interp;
     Package *pkgPtr;
@@ -376,10 +379,12 @@ PkgRequireCore(
 	 */
 
 	if (pkgPtr->clientData != NULL) {
-	    Tcl_AppendResult(interp, "circular package dependency: "
-		    "attempt to provide ", name, " ",
-		    (char *) pkgPtr->clientData, " requires ", name, NULL);
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "circular package dependency:"
+		    " attempt to provide %s %s requires %s", 
+		    name, (char *) pkgPtr->clientData, name));
 	    AddRequirementsToResult(interp, reqc, reqv);
+	    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "CIRCULARITY", NULL);
 	    return NULL;
 	}
 
@@ -426,7 +431,9 @@ PkgRequireCore(
 		}
 	    }
 
-	    /* We have found a version which is better than our max. */
+	    /*
+	     * We have found a version which is better than our max.
+	     */
 
 	    if (reqc > 0) {
 		/* Check satisfaction of requirements. */
@@ -479,24 +486,26 @@ PkgRequireCore(
 	     * will still exist when the script completes.
 	     */
 
-	    const char *versionToProvide = bestPtr->version;
+	    char *versionToProvide = bestPtr->version;
 	    script = bestPtr->script;
 
-	    pkgPtr->clientData = (ClientData) versionToProvide;
-	    Tcl_Preserve((ClientData) script);
-	    Tcl_Preserve((ClientData) versionToProvide);
+	    pkgPtr->clientData = versionToProvide;
+	    Tcl_Preserve(script);
+	    Tcl_Preserve(versionToProvide);
 	    code = Tcl_EvalEx(interp, script, -1, TCL_EVAL_GLOBAL);
-	    Tcl_Release((ClientData) script);
+	    Tcl_Release(script);
 
 	    pkgPtr = FindPackage(interp, name);
 	    if (code == TCL_OK) {
 		Tcl_ResetResult(interp);
 		if (pkgPtr->version == NULL) {
 		    code = TCL_ERROR;
-		    Tcl_AppendResult(interp, "attempt to provide package ",
-			    name, " ", versionToProvide,
-			    " failed: no version of package ", name,
-			    " provided", NULL);
+		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			    "attempt to provide package %s %s failed:"
+			    " no version of package %s provided",
+			    name, versionToProvide, name));
+		    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNPROVIDED",
+			    NULL);
 		} else {
 		    char *pvi, *vi;
 
@@ -514,21 +523,24 @@ PkgRequireCore(
 			ckfree(vi);
 			if (res != 0) {
 			    code = TCL_ERROR;
-			    Tcl_AppendResult(interp,
-				    "attempt to provide package ", name, " ",
-				    versionToProvide, " failed: package ",
-				    name, " ", pkgPtr->version,
-				    " provided instead", NULL);
+			    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+				    "attempt to provide package %s %s failed:"
+				    " package %s %s provided instead",
+				    name, versionToProvide,
+				    name, pkgPtr->version));
+			    Tcl_SetErrorCode(interp, "TCL", "PACKAGE",
+				    "WRONGPROVIDE", NULL);
 			}
 		    }
 		}
 	    } else if (code != TCL_ERROR) {
 		Tcl_Obj *codePtr = Tcl_NewIntObj(code);
 
-		Tcl_ResetResult(interp);
-		Tcl_AppendResult(interp, "attempt to provide package ", name,
-			" ", versionToProvide, " failed: bad return code: ",
-			TclGetString(codePtr), NULL);
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"attempt to provide package %s %s failed:"
+			" bad return code: %s",
+			name, versionToProvide, TclGetString(codePtr)));
+		Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "BADRESULT", NULL);
 		TclDecrRefCount(codePtr);
 		code = TCL_ERROR;
 	    }
@@ -538,7 +550,7 @@ PkgRequireCore(
 			"\n    (\"package ifneeded %s %s\" script)",
 			name, versionToProvide));
 	    }
-	    Tcl_Release((ClientData) versionToProvide);
+	    Tcl_Release(versionToProvide);
 
 	    if (code != TCL_OK) {
 		/*
@@ -585,11 +597,9 @@ PkgRequireCore(
 	    Tcl_DStringFree(&command);
 
 	    if ((code != TCL_OK) && (code != TCL_ERROR)) {
-		Tcl_Obj *codePtr = Tcl_NewIntObj(code);
-		Tcl_ResetResult(interp);
-		Tcl_AppendResult(interp, "bad return code: ",
-			TclGetString(codePtr), NULL);
-		Tcl_DecrRefCount(codePtr);
+		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+			"bad return code: %d", code));
+		Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "BADRESULT", NULL);
 		code = TCL_ERROR;
 	    }
 	    if (code == TCL_ERROR) {
@@ -602,7 +612,9 @@ PkgRequireCore(
     }
 
     if (pkgPtr->version == NULL) {
-	Tcl_AppendResult(interp, "can't find package ", name, NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"can't find package %s", name));
+	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNFOUND", NULL);
 	AddRequirementsToResult(interp, reqc, reqv);
 	return NULL;
     }
@@ -612,26 +624,29 @@ PkgRequireCore(
      * provided version meets the current requirements.
      */
 
-    if (reqc == 0) {
-	satisfies = 1;
-    } else {
+    if (reqc != 0) {
 	CheckVersionAndConvert(interp, pkgPtr->version, &pkgVersionI, NULL);
 	satisfies = SomeRequirementSatisfied(pkgVersionI, reqc, reqv);
 
 	ckfree(pkgVersionI);
-    }
 
-    if (satisfies) {
-	if (clientDataPtr) {
-	    *clientDataPtr = pkgPtr->clientData;
+	if (!satisfies) {
+	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		    "version conflict for package \"%s\": have %s, need",
+		    name, pkgPtr->version));
+	    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT",
+		    NULL);
+	    AddRequirementsToResult(interp, reqc, reqv);
+	    return NULL;
 	}
-	return pkgPtr->version;
     }
 
-    Tcl_AppendResult(interp, "version conflict for package \"", name,
-	    "\": have ", pkgPtr->version, ", need", NULL);
-    AddRequirementsToResult(interp, reqc, reqv);
-    return NULL;
+    if (clientDataPtr) {
+	const void **ptr = (const void **) clientDataPtr;
+
+	*ptr = pkgPtr->clientData;
+    }
+    return pkgPtr->version;
 }
 
 /*
@@ -679,7 +694,7 @@ Tcl_PkgPresentEx(
     int exact,			/* Non-zero means that only the particular
 				 * version given is acceptable. Zero means use
 				 * the latest compatible version. */
-    ClientData *clientDataPtr)	/* Used to return the client data for this
+    void *clientDataPtr)	/* Used to return the client data for this
 				 * package. If it is NULL then the client data
 				 * is not returned. This is unchanged if this
 				 * call fails for any reason. */
@@ -710,10 +725,11 @@ Tcl_PkgPresentEx(
     }
 
     if (version != NULL) {
-	Tcl_AppendResult(interp, "package ", name, " ", version,
-		" is not present", NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"package %s %s is not present", name, version));
     } else {
-	Tcl_AppendResult(interp, "package ", name, " is not present", NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"package %s is not present", name));
     }
     Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "PACKAGE", name, NULL);
     return NULL;
@@ -744,7 +760,7 @@ Tcl_PackageObjCmd(
     int objc,			/* Number of arguments. */
     Tcl_Obj *const objv[])	/* Argument objects. */
 {
-    static const char *pkgOptions[] = {
+    static const char *const pkgOptions[] = {
 	"forget",  "ifneeded", "names",   "prefer",   "present",
 	"provide", "require",  "unknown", "vcompare", "versions",
 	"vsatisfies", NULL
@@ -762,10 +778,11 @@ Tcl_PackageObjCmd(
     Tcl_HashSearch search;
     Tcl_HashTable *tablePtr;
     const char *version;
-    char *argv2, *argv3, *argv4, *iva = NULL, *ivb = NULL;
+    const char *argv2, *argv3, *argv4;
+    char *iva = NULL, *ivb = NULL;
 
     if (objc < 2) {
-	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
+	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
 	return TCL_ERROR;
     }
 
@@ -775,7 +792,7 @@ Tcl_PackageObjCmd(
     }
     switch ((enum pkgOptions) optionIndex) {
     case PKG_FORGET: {
-	char *keyString;
+	const char *keyString;
 
 	for (i = 2; i < objc; i++) {
 	    keyString = TclGetString(objv[i]);
@@ -791,11 +808,11 @@ Tcl_PackageObjCmd(
 	    while (pkgPtr->availPtr != NULL) {
 		availPtr = pkgPtr->availPtr;
 		pkgPtr->availPtr = availPtr->nextPtr;
-		Tcl_EventuallyFree((ClientData)availPtr->version, TCL_DYNAMIC);
-		Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
-		ckfree((char *) availPtr);
+		Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
+		Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
+		ckfree(availPtr);
 	    }
-	    ckfree((char *) pkgPtr);
+	    ckfree(pkgPtr);
 	}
 	break;
     }
@@ -838,10 +855,11 @@ Tcl_PackageObjCmd(
 	    if (res == 0){
 		if (objc == 4) {
 		    ckfree(argv3i);
-		    Tcl_SetResult(interp, availPtr->script, TCL_VOLATILE);
+		    Tcl_SetObjResult(interp,
+			    Tcl_NewStringObj(availPtr->script, -1));
 		    return TCL_OK;
 		}
-		Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
+		Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
 		break;
 	    }
 	}
@@ -851,7 +869,7 @@ Tcl_PackageObjCmd(
 	    return TCL_OK;
 	}
 	if (availPtr == NULL) {
-	    availPtr = (PkgAvail *) ckalloc(sizeof(PkgAvail));
+	    availPtr = ckalloc(sizeof(PkgAvail));
 	    DupBlock(availPtr->version, argv3, (unsigned) length + 1);
 
 	    if (prevPtr == NULL) {
@@ -870,18 +888,25 @@ Tcl_PackageObjCmd(
 	if (objc != 2) {
 	    Tcl_WrongNumArgs(interp, 2, objv, NULL);
 	    return TCL_ERROR;
-	}
-	tablePtr = &iPtr->packageTable;
-	for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr != NULL;
-		hPtr = Tcl_NextHashEntry(&search)) {
-	    pkgPtr = Tcl_GetHashValue(hPtr);
-	    if ((pkgPtr->version != NULL) || (pkgPtr->availPtr != NULL)) {
-		Tcl_AppendElement(interp, Tcl_GetHashKey(tablePtr, hPtr));
+	} else {
+	    Tcl_Obj *resultObj;
+
+	    resultObj = Tcl_NewObj();
+	    tablePtr = &iPtr->packageTable;
+	    for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); hPtr != NULL;
+		    hPtr = Tcl_NextHashEntry(&search)) {
+		pkgPtr = Tcl_GetHashValue(hPtr);
+		if ((pkgPtr->version != NULL) || (pkgPtr->availPtr != NULL)) {
+		    Tcl_ListObjAppendElement(NULL,resultObj, Tcl_NewStringObj(
+			    Tcl_GetHashKey(tablePtr, hPtr), -1));
+		}
 	    }
+	    Tcl_SetObjResult(interp, resultObj);
 	}
 	break;
     case PKG_PRESENT: {
 	const char *name;
+
 	if (objc < 3) {
 	    goto require;
 	}
@@ -936,7 +961,8 @@ Tcl_PackageObjCmd(
 	    if (hPtr != NULL) {
 		pkgPtr = Tcl_GetHashValue(hPtr);
 		if (pkgPtr->version != NULL) {
-		    Tcl_SetResult(interp, pkgPtr->version, TCL_VOLATILE);
+		    Tcl_SetObjResult(interp,
+			    Tcl_NewStringObj(pkgPtr->version, -1));
 		}
 	    }
 	    return TCL_OK;
@@ -951,7 +977,7 @@ Tcl_PackageObjCmd(
 	if (objc < 3) {
 	requireSyntax:
 	    Tcl_WrongNumArgs(interp, 2, objv,
-		    "?-exact? package ?requirement...?");
+		    "?-exact? package ?requirement ...?");
 	    return TCL_ERROR;
 	}
 
@@ -998,7 +1024,8 @@ Tcl_PackageObjCmd(
 
 	if (objc == 2) {
 	    if (iPtr->packageUnknown != NULL) {
-		Tcl_SetResult(interp, iPtr->packageUnknown, TCL_VOLATILE);
+		Tcl_SetObjResult(interp,
+			Tcl_NewStringObj(iPtr->packageUnknown, -1));
 	    }
 	} else if (objc == 3) {
 	    if (iPtr->packageUnknown != NULL) {
@@ -1017,7 +1044,7 @@ Tcl_PackageObjCmd(
 	break;
     }
     case PKG_PREFER: {
-	static const char *pkgPreferOptions[] = {
+	static const char *const pkgPreferOptions[] = {
 	    "latest", "stable", NULL
 	};
 
@@ -1086,23 +1113,27 @@ Tcl_PackageObjCmd(
 	if (objc != 3) {
 	    Tcl_WrongNumArgs(interp, 2, objv, "package");
 	    return TCL_ERROR;
-	}
-	argv2 = TclGetString(objv[2]);
-	hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
-	if (hPtr != NULL) {
-	    pkgPtr = Tcl_GetHashValue(hPtr);
-	    for (availPtr = pkgPtr->availPtr; availPtr != NULL;
-		    availPtr = availPtr->nextPtr) {
-		Tcl_AppendElement(interp, availPtr->version);
+	} else {
+	    Tcl_Obj *resultObj = Tcl_NewObj();
+
+	    argv2 = TclGetString(objv[2]);
+	    hPtr = Tcl_FindHashEntry(&iPtr->packageTable, argv2);
+	    if (hPtr != NULL) {
+		pkgPtr = Tcl_GetHashValue(hPtr);
+		for (availPtr = pkgPtr->availPtr; availPtr != NULL;
+			availPtr = availPtr->nextPtr) {
+		    Tcl_ListObjAppendElement(NULL, resultObj,
+			    Tcl_NewStringObj(availPtr->version, -1));
+		}
 	    }
+	    Tcl_SetObjResult(interp, resultObj);
 	}
 	break;
     case PKG_VSATISFIES: {
 	char *argv2i = NULL;
 
 	if (objc < 4) {
-	    Tcl_WrongNumArgs(interp, 2, objv,
-		    "version requirement requirement...");
+	    Tcl_WrongNumArgs(interp, 2, objv, "version ?requirement ...?");
 	    return TCL_ERROR;
 	}
 
@@ -1156,7 +1187,7 @@ FindPackage(
 
     hPtr = Tcl_CreateHashEntry(&iPtr->packageTable, name, &isNew);
     if (isNew) {
-	pkgPtr = (Package *) ckalloc(sizeof(Package));
+	pkgPtr = ckalloc(sizeof(Package));
 	pkgPtr->version = NULL;
 	pkgPtr->availPtr = NULL;
 	pkgPtr->clientData = NULL;
@@ -1202,11 +1233,11 @@ TclFreePackageInfo(
 	while (pkgPtr->availPtr != NULL) {
 	    availPtr = pkgPtr->availPtr;
 	    pkgPtr->availPtr = availPtr->nextPtr;
-	    Tcl_EventuallyFree((ClientData)availPtr->version, TCL_DYNAMIC);
-	    Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
-	    ckfree((char *) availPtr);
+	    Tcl_EventuallyFree(availPtr->version, TCL_DYNAMIC);
+	    Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
+	    ckfree(availPtr);
 	}
-	ckfree((char *) pkgPtr);
+	ckfree(pkgPtr);
     }
     Tcl_DeleteHashTable(&iPtr->packageTable);
     if (iPtr->packageUnknown != NULL) {
@@ -1328,8 +1359,9 @@ CheckVersionAndConvert(
 
   error:
     ckfree(ibuf);
-    Tcl_AppendResult(interp, "expected version number but got \"", string,
-	    "\"", NULL);
+    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+	    "expected version number but got \"%s\"", string));
+    Tcl_SetErrorCode(interp, "TCL", "VALUE", "VERSION", NULL);
     return TCL_ERROR;
 }
 
@@ -1590,8 +1622,9 @@ CheckRequirement(
 	 * More dashes found after the first. This is wrong.
 	 */
 
-	Tcl_AppendResult(interp, "expected versionMin-versionMax but got \"",
-		string, "\"", NULL);
+	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+		"expected versionMin-versionMax but got \"%s\"", string));
+	Tcl_SetErrorCode(interp, "TCL", "VALUE", "VERSIONRANGE", NULL);
 	return TCL_ERROR;
     }
 
@@ -1642,19 +1675,17 @@ AddRequirementsToResult(
     Tcl_Obj *const reqv[])	/* 0 means to use the latest version
 				 * available. */
 {
-    if (reqc > 0) {
-	int i;
+    Tcl_Obj *result = Tcl_GetObjResult(interp);
+    int i, length;
 
-	for (i = 0; i < reqc; i++) {
-	    int length;
-	    char *v = Tcl_GetStringFromObj(reqv[i], &length);
+    for (i = 0; i < reqc; i++) {
+	const char *v = Tcl_GetStringFromObj(reqv[i], &length);
 
-	    if ((length & 0x1) && (v[length/2] == '-')
-		    && (strncmp(v, v+((length+1)/2), length/2) == 0)) {
-		Tcl_AppendResult(interp, " exactly ", v+((length+1)/2), NULL);
-	    } else {
-		Tcl_AppendResult(interp, " ", v, NULL);
-	    }
+	if ((length & 0x1) && (v[length/2] == '-')
+		&& (strncmp(v, v+((length+1)/2), length/2) == 0)) {
+	    Tcl_AppendPrintfToObj(result, " exactly %s", v+((length+1)/2));
+	} else {
+	    Tcl_AppendPrintfToObj(result, " %s", v);
 	}
     }
 }
@@ -1683,15 +1714,15 @@ AddRequirementsToDString(
     Tcl_Obj *const reqv[])	/* 0 means to use the latest version
 				 * available. */
 {
-    if (reqc > 0) {
-	int i;
+    int i;
 
+    if (reqc > 0) {
 	for (i = 0; i < reqc; i++) {
-	    Tcl_DStringAppend(dsPtr, " ", 1);
-	    Tcl_DStringAppend(dsPtr, TclGetString(reqv[i]), -1);
+	    TclDStringAppendLiteral(dsPtr, " ");
+	    TclDStringAppendObj(dsPtr, reqv[i]);
 	}
     } else {
-	Tcl_DStringAppend(dsPtr, " 0-", -1);
+	TclDStringAppendLiteral(dsPtr, " 0-");
     }
 }