diff options
Diffstat (limited to 'generic/tclInt.h')
| -rw-r--r-- | generic/tclInt.h | 78 |
1 files changed, 20 insertions, 58 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h index 10938dd..17e5c87 100644 --- a/generic/tclInt.h +++ b/generic/tclInt.h @@ -1773,41 +1773,31 @@ typedef struct AllocCache { typedef struct Interp { /* - * Note: the first three fields must match exactly the fields in a - * Tcl_Interp struct (see tcl.h). If you change one, be sure to change the - * other. - * - * The interpreter's result is held in both the string and the - * objResultPtr fields. These fields hold, respectively, the result's - * string or object value. The interpreter's result is always in the - * result field if that is non-empty, otherwise it is in objResultPtr. - * The two fields are kept consistent unless some C code sets - * interp->result directly. Programs should not access result and - * objResultPtr directly; instead, they should always get and set the - * result using procedures such as Tcl_SetObjResult, Tcl_GetObjResult, and - * Tcl_GetStringResult. See the SetResult man page for details. + * The first two fields were named "result" and "freeProc" in earlier + * versions of Tcl. They are no longer used within Tcl, and are no + * longer available to be accessed by extensions. However, they cannot + * be removed. Why? There is a deployed base of stub-enabled extensions + * that query the value of iPtr->stubTable. For them to continue to work, + * the location of the field "stubTable" within the Interp struct cannot + * change. The most robust way to assure that is to leave all fields up to + * that one undisturbed. */ - char *result; /* If the last command returned a string - * result, this points to it. Should not be - * accessed directly; see comment above. */ - Tcl_FreeProc *freeProc; /* Zero means a string result is statically - * allocated. TCL_DYNAMIC means string result - * was allocated with ckalloc and should be - * freed with ckfree. Other values give - * address of procedure to invoke to free the - * string result. Tcl_Eval must free it before - * executing next command. */ + const char *legacyResult; + void (*legacyFreeProc) (void); int errorLine; /* When TCL_ERROR is returned, this gives the * line number in the command where the error * occurred (1 means first line). */ const struct TclStubs *stubTable; - /* Pointer to the exported Tcl stub table. On - * previous versions of Tcl this is a pointer - * to the objResultPtr or a pointer to a - * buckets array in a hash table. We therefore - * have to do some careful checking before we - * can use this. */ + /* Pointer to the exported Tcl stub table. In + * ancient pre-8.1 versions of Tcl this was a + * pointer to the objResultPtr or a pointer to a + * buckets array in a hash table. Deployed stubs + * enabled extensions check for a NULL pointer value + * and for a TCL_STUBS_MAGIC value to verify they + * are not [load]ing into one of those pre-stubs + * interps. + */ TclHandle handle; /* Handle used to keep track of when this * interp is deleted. */ @@ -1858,25 +1848,6 @@ typedef struct Interp { * TCL_EVAL_INVOKE call to Tcl_EvalObjv. */ /* - * Information used by Tcl_AppendResult to keep track of partial results. - * See Tcl_AppendResult code for details. - */ - -#ifndef TCL_NO_DEPRECATED - char *appendResult; /* Storage space for results generated by - * Tcl_AppendResult. Ckalloc-ed. NULL means - * not yet allocated. */ - int appendAvl; /* Total amount of space available at - * partialResult. */ - int appendUsed; /* Number of non-null bytes currently stored - * at partialResult. */ -#else - char *appendResultDontUse; - int appendAvlDontUse; - int appendUsedDontUse; -#endif - - /* * Information about packages. Used only in tclPkg.c. */ @@ -1898,7 +1869,6 @@ typedef struct Interp { * Normally zero, but may be set before * calling Tcl_Eval. See below for valid * values. */ - int unused1; /* No longer used (was termOffset) */ LiteralTable literalTable; /* Contains LiteralEntry's describing all Tcl * objects holding literals of scripts * compiled by the interpreter. Indexed by the @@ -1936,12 +1906,6 @@ typedef struct Interp { * string. Returned by Tcl_ObjSetVar2 when * variable traces change a variable in a * gross way. */ -#ifndef TCL_NO_DEPRECATED - char resultSpace[TCL_RESULT_SIZE+1]; - /* Static space holding small results. */ -#else - char resultSpaceDontUse[TCL_RESULT_SIZE+1]; -#endif Tcl_Obj *objResultPtr; /* If the last command returned an object * result, this points to it. Should not be * accessed directly; see comment above. */ @@ -2887,8 +2851,6 @@ MODULE_SCOPE int TclByteArrayMatch(const unsigned char *string, MODULE_SCOPE double TclCeil(const mp_int *a); MODULE_SCOPE void TclChannelPreserve(Tcl_Channel chan); MODULE_SCOPE void TclChannelRelease(Tcl_Channel chan); -MODULE_SCOPE int TclCheckBadOctal(Tcl_Interp *interp, - const char *value); MODULE_SCOPE int TclChanCaughtErrorBypass(Tcl_Interp *interp, Tcl_Channel chan); MODULE_SCOPE Tcl_ObjCmdProc TclChannelNamesCmd; @@ -4468,7 +4430,7 @@ MODULE_SCOPE int TclIsPureByteArray(Tcl_Obj *objPtr); /* *---------------------------------------------------------------- - * Macro used by the Tcl core to increment a namespace's export export epoch + * Macro used by the Tcl core to increment a namespace's export epoch * counter. The ANSI C "prototype" for this macro is: * * MODULE_SCOPE void TclInvalidateNsCmdLookup(Namespace *nsPtr); |