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- /* Copyright (C) 1989, 1992, 1993 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* iname.h */
- /* Name table entry structure for Ghostscript */
-
- /* Name structure. The name table is a simple chained hash table. */
- /* There is an optimization to avoid lookup for operator and other */
- /* global names. */
- struct name_s {
- ushort next_index; /* next name in chain or 0 */
- ushort string_size;
- const byte *string_bytes;
- /* pvalue specifies the definition status of the name: */
- /* pvalue == pv_no_defn: no definitions */
- #define pv_no_defn ((ref *)0)
- /* pvalue == pv_other: other status */
- #define pv_other ((ref *)1)
- #define pv_valid(pvalue) ((unsigned long)(pvalue) > 1)
- /* pvalue != pv_no_defn, pvalue != pv_other: pvalue is valid */
- ref *pvalue; /* if only defined in systemdict */
- /* or userdict, this points to */
- /* the value */
- };
- /*typedef struct name_s name;*/ /* in ghost.h */
-
- /* Procedures for the name table. */
-
- /* The size argument for name_ref should be a ushort, */
- /* but this gets the Apollo compiler confused. */
- /* enterflag=-1 means don't enter (return an error if missing); */
- /* enterflag=0 means enter if missing, don't copy the string; */
- /* enterflag=1 means enter if missing, copy the string. */
- extern int name_ref(P4(const byte *ptr, uint size, ref *pnref, int enterflag));
- extern void name_string_ref(P2(const ref *pnref, ref *psref));
- extern void name_enter(P2(const char *str, ref *pnref));
- /* name_from_string essentially implements cvn. */
- /* It always enters the name, and copies the executable attribute. */
- extern int name_from_string(P2(const ref *psref, ref *pnref));
-
- /* Compare two names for equality. */
- #define name_eq(pnref1, pnref2)\
- (name_index(pnref1) == name_index(pnref2))
-
- /* Conversion between names and indices. */
- #define name_index(pnref) r_size(pnref)
- extern void name_index_ref(P2(uint index /* should be ushort */,
- ref *pnref));
- extern uint name_count(P0());
- extern int name_is_since_count(P2(const ref *, uint));
-
- /* Clean up the name table before a restore. */
- extern void name_restore(P1(uint old_count));
-