1 files changed, 63 insertions, 45 deletions

diff --git a/generic/tclPkg.c b/generic/tclPkg.c
index aed80c0..67503cb 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;
@@ -156,6 +156,7 @@ Tcl_PkgProvideEx(
     }
     Tcl_AppendResult(interp, "conflicting versions provided for package \"",
 	    name, "\": ", pkgPtr->version, ", then ", version, NULL);
+    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "VERSIONCONFLICT", NULL);
     return TCL_ERROR;
 }
 
@@ -210,7 +211,7 @@ 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. */
@@ -286,6 +287,7 @@ Tcl_PkgRequireEx(
 	Tcl_AppendResult(interp, "Cannot load package \"", name,
 		"\" in standalone executable: This package is not "
 		"compiled with stub support", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNSTUBBED", NULL);
 	return NULL;
     }
 
@@ -321,7 +323,7 @@ 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 +344,7 @@ PkgRequireCore(
 				 * version. */
     Tcl_Obj *const reqv[],	/* 0 means to use the latest version
 				 * available. */
-    ClientData *clientDataPtr)
+    void *clientDataPtr)
 {
     Interp *iPtr = (Interp *) interp;
     Package *pkgPtr;
@@ -376,6 +378,7 @@ PkgRequireCore(
 		    "attempt to provide ", name, " ",
 		    (char *) pkgPtr->clientData, " requires ", name, NULL);
 	    AddRequirementsToResult(interp, reqc, reqv);
+	    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "CIRCULARITY", NULL);
 	    return NULL;
 	}
 
@@ -422,7 +425,9 @@ 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. */
@@ -475,14 +480,14 @@ 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) {
@@ -493,6 +498,8 @@ PkgRequireCore(
 			    name, " ", versionToProvide,
 			    " failed: no version of package ", name,
 			    " provided", NULL);
+		    Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNPROVIDED",
+			    NULL);
 		} else {
 		    char *pvi, *vi;
 
@@ -515,6 +522,8 @@ PkgRequireCore(
 				    versionToProvide, " failed: package ",
 				    name, " ", pkgPtr->version,
 				    " provided instead", NULL);
+			    Tcl_SetErrorCode(interp, "TCL", "PACKAGE",
+				    "WRONGPROVIDE", NULL);
 			}
 		    }
 		}
@@ -525,6 +534,7 @@ PkgRequireCore(
 		Tcl_AppendResult(interp, "attempt to provide package ", name,
 			" ", versionToProvide, " failed: bad return code: ",
 			TclGetString(codePtr), NULL);
+		Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "BADRESULT", NULL);
 		TclDecrRefCount(codePtr);
 		code = TCL_ERROR;
 	    }
@@ -534,7 +544,7 @@ PkgRequireCore(
 			"\n    (\"package ifneeded %s %s\" script)",
 			name, versionToProvide));
 	    }
-	    Tcl_Release((ClientData) versionToProvide);
+	    Tcl_Release(versionToProvide);
 
 	    if (code != TCL_OK) {
 		/*
@@ -582,9 +592,11 @@ PkgRequireCore(
 
 	    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_SetErrorCode(interp, "TCL", "PACKAGE", "BADRESULT", NULL);
 		Tcl_DecrRefCount(codePtr);
 		code = TCL_ERROR;
 	    }
@@ -599,6 +611,7 @@ PkgRequireCore(
 
     if (pkgPtr->version == NULL) {
 	Tcl_AppendResult(interp, "can't find package ", name, NULL);
+	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNFOUND", NULL);
 	AddRequirementsToResult(interp, reqc, reqv);
 	return NULL;
     }
@@ -608,26 +621,28 @@ 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_AppendResult(interp, "version conflict for package \"", name,
+		    "\": have ", pkgPtr->version, ", need", NULL);
+	    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;
 }
 
 /*
@@ -675,7 +690,7 @@ 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. */
@@ -740,7 +755,7 @@ 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
@@ -758,10 +773,11 @@ 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;
     }
 
@@ -771,7 +787,7 @@ Tcl_PackageObjCmd(
     }
     switch ((enum pkgOptions) optionIndex) {
     case PKG_FORGET: {
-	char *keyString;
+	const char *keyString;
 
 	for (i = 2; i < objc; i++) {
 	    keyString = TclGetString(objv[i]);
@@ -787,11 +803,11 @@ 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;
     }
@@ -837,7 +853,7 @@ Tcl_PackageObjCmd(
 		    Tcl_SetResult(interp, availPtr->script, TCL_VOLATILE);
 		    return TCL_OK;
 		}
-		Tcl_EventuallyFree((ClientData)availPtr->script, TCL_DYNAMIC);
+		Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);
 		break;
 	    }
 	}
@@ -847,7 +863,7 @@ 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) {
@@ -947,7 +963,7 @@ Tcl_PackageObjCmd(
 	if (objc < 3) {
 	requireSyntax:
 	    Tcl_WrongNumArgs(interp, 2, objv,
-		    "?-exact? package ?requirement...?");
+		    "?-exact? package ?requirement ...?");
 	    return TCL_ERROR;
 	}
 
@@ -1013,7 +1029,7 @@ Tcl_PackageObjCmd(
 	break;
     }
     case PKG_PREFER: {
-	static const char *pkgPreferOptions[] = {
+	static const char *const pkgPreferOptions[] = {
 	    "latest", "stable", NULL
 	};
 
@@ -1098,7 +1114,7 @@ Tcl_PackageObjCmd(
 
 	if (objc < 4) {
 	    Tcl_WrongNumArgs(interp, 2, objv,
-		    "version requirement requirement...");
+		    "version ?requirement ...?");
 	    return TCL_ERROR;
 	}
 
@@ -1152,7 +1168,7 @@ 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;
@@ -1198,11 +1214,11 @@ 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) {
@@ -1326,6 +1342,7 @@ CheckVersionAndConvert(
     ckfree(ibuf);
     Tcl_AppendResult(interp, "expected version number but got \"", string,
 	    "\"", NULL);
+    Tcl_SetErrorCode(interp, "TCL", "VALUE", "VERSION", NULL);
     return TCL_ERROR;
 }
 
@@ -1588,6 +1605,7 @@ CheckRequirement(
 
 	Tcl_AppendResult(interp, "expected versionMin-versionMax but got \"",
 		string, "\"", NULL);
+	Tcl_SetErrorCode(interp, "TCL", "VALUE", "VERSIONRANGE", NULL);
 	return TCL_ERROR;
     }
 
@@ -1643,7 +1661,7 @@ AddRequirementsToResult(
 
 	for (i = 0; i < reqc; i++) {
 	    int length;
-	    char *v = Tcl_GetStringFromObj(reqv[i], &length);
+	    const char *v = Tcl_GetStringFromObj(reqv[i], &length);
 
 	    if ((length & 0x1) && (v[length/2] == '-')
 		    && (strncmp(v, v+((length+1)/2), length/2) == 0)) {