/* from hbytes.c */
+/* Internal representation details: */
+#define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
+#define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
+#define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
+#define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
+
typedef struct {
- Byte *start, *end; /* always allocated dynamically */
+ void *begin_complex, *end_0;
} HBytes_Value; /* overlays internalRep */
+typedef struct {
+ Byte *dstart; /* always allocated dynamically */
+ int prespace, len, avail;
+ /*
+ * | SPARE | USED | SPARE |
+ * |<-prespace->|<-len->| |
+ * | |<----avail---->|
+ * ^start
+ */
+} HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
+
+/* Public interfaces: */
+
extern Tcl_ObjType hbytes_type;
+int hbytes_len(const HBytes_Value *v);
+Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
+int hbytes_issentinel(const HBytes_Value *v);
+
+Byte *hbytes_prepend(HBytes_Value *upd, int el);
+Byte *hbytes_append(HBytes_Value *upd, int el);
+ /* return value is where to put the data */
+
+const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
+const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
+ /* return value points to the removed data, which remains valid
+ * until next op on the HBytes_Value. If original value is
+ * shorter than rl or negative, returns 0 and does nothing. */
+
+void hbytes_empty(HBytes_Value *returns);
+void hbytes_sentinel(HBytes_Value *returns);
+void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
+Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
+void hbytes_free(HBytes_Value *frees);
+ /* _empty, _sentinel and _array do not free or read the old value;
+ * _free it first if needed. _free leaves it garbage, so you
+ * have to call _empty to reuse it. _arrayspace doesn't fill
+ * the array; you get a pointer and must fill it with data
+ * yourself. */
+
+/* The value made by hbytes_sentinel should not be passed to
+ * anything except HBYTES_IS..., and hbytes_free. */
+
+/* from hook.c */
+
int staticerr(Tcl_Interp *ip, const char *m);
void objfreeir(Tcl_Obj *o);
-void hbytes_set(HBytes_Value *upd, const Byte *array, int l);
-Tcl_Obj *hbytes_set_obj(Tcl_Obj *overwrite, const Byte *array, int l);
-
/* from parse.c */
typedef struct {
void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
+/* from chop.c */
+
/* from enum.c */
extern Tcl_ObjType enum_nearlytype;
/* useful macros */
-#define HBYTES(o) (*(HBytes_Value*)&(o)->internalRep.twoPtrValue)
-#define HBYTES_LEN(hb) ((hb).end - (hb).start)
+#define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
#define TALLOC(s) ((void*)Tcl_Alloc((s)))
#define TFREE(f) (Tcl_Free((void*)(f)))