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diff --git a/include/demangle.h b/include/demangle.h
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+/* Defs for interface to demanglers.
+ Copyright 1992, 1995, 1996 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+
+#if !defined (DEMANGLE_H)
+#define DEMANGLE_H
+
+#include <ansidecl.h>
+
+/* Options passed to cplus_demangle (in 2nd parameter). */
+
+#define DMGL_NO_OPTS 0 /* For readability... */
+#define DMGL_PARAMS (1 << 0) /* Include function args */
+#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
+#define DMGL_JAVA (1 << 2) /* Demangle as Java rather than C++. */
+
+#define DMGL_AUTO (1 << 8)
+#define DMGL_GNU (1 << 9)
+#define DMGL_LUCID (1 << 10)
+#define DMGL_ARM (1 << 11)
+#define DMGL_HP (1 << 12) /* For the HP aCC compiler; same as ARM
+ except for template arguments, etc. */
+#define DMGL_EDG (1 << 13)
+
+/* If none of these are set, use 'current_demangling_style' as the default. */
+#define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG)
+
+/* Enumeration of possible demangling styles.
+
+ Lucid and ARM styles are still kept logically distinct, even though
+ they now both behave identically. The resulting style is actual the
+ union of both. I.E. either style recognizes both "__pt__" and "__rf__"
+ for operator "->", even though the first is lucid style and the second
+ is ARM style. (FIXME?) */
+
+extern enum demangling_styles
+{
+ unknown_demangling = 0,
+ auto_demangling = DMGL_AUTO,
+ gnu_demangling = DMGL_GNU,
+ lucid_demangling = DMGL_LUCID,
+ arm_demangling = DMGL_ARM,
+ hp_demangling = DMGL_HP,
+ edg_demangling = DMGL_EDG
+} current_demangling_style;
+
+/* Define string names for the various demangling styles. */
+
+#define AUTO_DEMANGLING_STYLE_STRING "auto"
+#define GNU_DEMANGLING_STYLE_STRING "gnu"
+#define LUCID_DEMANGLING_STYLE_STRING "lucid"
+#define ARM_DEMANGLING_STYLE_STRING "arm"
+#define HP_DEMANGLING_STYLE_STRING "hp"
+#define EDG_DEMANGLING_STYLE_STRING "edg"
+
+/* Some macros to test what demangling style is active. */
+
+#define CURRENT_DEMANGLING_STYLE current_demangling_style
+#define AUTO_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_AUTO)
+#define GNU_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU)
+#define LUCID_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_LUCID)
+#define ARM_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_ARM)
+#define HP_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_HP)
+#define EDG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_EDG)
+
+extern char *
+cplus_demangle PARAMS ((const char *mangled, int options));
+
+extern int
+cplus_demangle_opname PARAMS ((const char *opname, char *result, int options));
+
+extern const char *
+cplus_mangle_opname PARAMS ((const char *opname, int options));
+
+/* Note: This sets global state. FIXME if you care about multi-threading. */
+
+extern void
+set_cplus_marker_for_demangling PARAMS ((int ch));
+
+#endif /* DEMANGLE_H */