* libiberty/cplus-dem.c

        (libiberty_demanglers): new table for demangle styles
        (cplus_demangle_set_style): New function for setting style
        (cplus_demangle_name_to_style): New function to translate name
        * include/demangle.h
        (libiberty_demanglers): new table for different styles
        (cplus_demangle_set_style): New function for setting style
        (cplus_demangle_name_to_style): New function to translate name

Co-Authored-By: Jason Merrill <jason@casey.cygnus.com>

From-SVN: r33525

include/ChangeLog

+2000-04-28  Kenneth Block  <block@zk3.dec.com>
+	    Jason Merrill  <jason@casey.cygnus.com>
+
+        * demangle.h (libiberty_demanglers): new table for different styles.
+        (cplus_demangle_set_style): New function for setting style.
+        (cplus_demangle_name_to_style): New function to translate name.
+
 2000-04-24  Mark Mitchell  <mark@codesourcery.com>
 
 	* hashtab.h (hash_pointer): Declare.

include/demangle.h

@@ -78,6 +78,16 @@ extern enum demangling_styles
 #define HP_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_HP)
 #define EDG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_EDG)
 
+/* Provide information about the available demangle styles. This code is
+   pulled from gdb into libiberty because it is useful to binutils also.  */
+
+extern struct demangler_engine
+{
+  char *demangling_style_name;
+  enum demangling_styles demangling_style;
+  char *demangling_style_doc;
+} libiberty_demanglers[];
+
 extern char *
 cplus_demangle PARAMS ((const char *mangled, int options));
 
@@ -92,4 +102,9 @@ cplus_mangle_opname PARAMS ((const char *opname, int options));
 extern void
 set_cplus_marker_for_demangling PARAMS ((int ch));
 
+extern enum demangling_styles 
+cplus_demangle_set_style PARAMS ((enum demangling_styles style));
+
+extern enum demangling_styles 
+cplus_demangle_name_to_style PARAMS ((const char *name));
 #endif	/* DEMANGLE_H */

libiberty/ChangeLog

+2000-04-28  Kenneth Block  <block@zk3.dec.com>
+	    Jason Merrill  <jason@casey.cygnus.com>
+
+        * cplus-dem.c (libiberty_demanglers): New table for demangle styles.
+        (cplus_demangle_set_style): New function for setting style.
+        (cplus_demangle_name_to_style): New function to translate name.
+
 2000-04-27  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* aclocal.m4: New file with new test libiberty_AC_FUNC_STRNCMP.

libiberty/cplus-dem.c

@@ -252,6 +252,49 @@ typedef enum type_kind_t
   tk_real
 } type_kind_t;
 
+struct demangler_engine libiberty_demanglers[] =
+{
+  {
+    AUTO_DEMANGLING_STYLE_STRING,
+      auto_demangling,
+      "Automatic selection based on executable"
+  }
+  ,
+  {
+    GNU_DEMANGLING_STYLE_STRING,
+      gnu_demangling,
+      "GNU (g++) style demangling"
+  }
+  ,
+  {
+    LUCID_DEMANGLING_STYLE_STRING,
+      lucid_demangling,
+      "Lucid (lcc) style demangling"
+  }
+  ,
+  {
+    ARM_DEMANGLING_STYLE_STRING,
+      arm_demangling,
+      "ARM style demangling"
+  }
+  ,
+  {
+    HP_DEMANGLING_STYLE_STRING,
+      hp_demangling,
+      "HP (aCC) style demangling"
+  }
+  ,
+  {
+    EDG_DEMANGLING_STYLE_STRING,
+      edg_demangling,
+      "EDG style demangling"
+  }
+  ,
+  {
+    NULL, unknown_demangling, NULL
+  }
+};
+
 #define STRING_EMPTY(str)	((str) -> b == (str) -> p)
 #define PREPEND_BLANK(str)	{if (!STRING_EMPTY(str)) \
     string_prepend(str, " ");}
@@ -733,6 +776,7 @@ cplus_demangle_opname (opname, result, options)
   return ret;
 
 }
+
 /* Takes operator name as e.g. "++" and returns mangled
    operator name (e.g. "postincrement_expr"), or NULL if not found.
 
@@ -758,6 +802,40 @@ cplus_mangle_opname (opname, options)
   return (0);
 }
 
+/* Add a routine to set the demangling style to be sure it is valid and
+   allow for any demangler initialization that maybe necessary. */
+
+enum demangling_styles
+cplus_demangle_set_style (style)
+     enum demangling_styles style;
+{
+  struct demangler_engine *demangler = libiberty_demanglers; 
+
+  for (; demangler->demangling_style != unknown_demangling; ++demangler)
+    if (style == demangler->demangling_style)
+      {
+	current_demangling_style = style;
+	return current_demangling_style;
+      }
+
+  return unknown_demangling;
+}
+
+/* Do string name to style translation */
+
+enum demangling_styles
+cplus_demangle_name_to_style (name)
+     const char *name;
+{
+  struct demangler_engine *demangler = libiberty_demanglers; 
+
+  for (; demangler->demangling_style != unknown_demangling; ++demangler)
+    if (strcmp (name, demangler->demangling_style_name) == 0)
+      return demangler->demangling_style;
+
+  return unknown_demangling;
+}
+
 /* char *cplus_demangle (const char *mangled, int options)
 
    If MANGLED is a mangled function name produced by GNU C++, then
@@ -4421,16 +4499,43 @@ demangle_it (mangled_name)
     }
 }
 
+static void 
+print_demangler_list (stream)
+     FILE *stream;
+{
+  struct demangler_engine *demangler; 
+
+  fprintf (stream, "{%s", libiberty_demanglers->demangling_style_name);
+  
+  for (demangler = libiberty_demanglers + 1;
+       demangler->demangling_style != unknown_demangling;
+       ++demangler)
+    fprintf (stream, ",%s", demangler->demangling_style_name);
+
+  fprintf (stream, "}");
+}
+
 static void
 usage (stream, status)
      FILE *stream;
      int status;
 {
   fprintf (stream, "\
-Usage: %s [-_] [-n] [-s {gnu,lucid,arm,hp,edg}] [--strip-underscores]\n\
-       [--no-strip-underscores] [--format={gnu,lucid,arm,hp,edg}]\n\
-      [--help] [--version] [arg...]\n",
+Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores] \n",
 	   program_name);
+
+  fprintf (stream, "\
+       [-s ");
+  print_demangler_list (stream);
+  fprintf (stream, "]\n");
+
+  fprintf (stream, "\
+       [--format ");
+  print_demangler_list (stream);
+  fprintf (stream, "]\n");
+
+  fprintf (stream, "\
+       [--help] [--version] [arg...]\n");
   exit (status);
 }
 
@@ -4553,32 +4658,19 @@ main (argc, argv)
 	  flags |= DMGL_JAVA;
 	  break;
 	case 's':
-	  if (strcmp (optarg, "gnu") == 0)
-	    {
-	      current_demangling_style = gnu_demangling;
-	    }
-	  else if (strcmp (optarg, "lucid") == 0)
-	    {
-	      current_demangling_style = lucid_demangling;
-	    }
-	  else if (strcmp (optarg, "arm") == 0)
-	    {
-	      current_demangling_style = arm_demangling;
-	    }
-	  else if (strcmp (optarg, "hp") == 0)
-	    {
-	      current_demangling_style = hp_demangling;
-	    }
-          else if (strcmp (optarg, "edg") == 0)
-            {
-              current_demangling_style = edg_demangling;
-            }
-	  else
-	    {
-	      fprintf (stderr, "%s: unknown demangling style `%s'\n",
-		       program_name, optarg);
-	      return (1);
-	    }
+	  {
+	    enum demangling_styles style;
+
+	    style = cplus_demangle_name_to_style (optarg);
+	    if (style == unknown_demangling)
+	      {
+		fprintf (stderr, "%s: unknown demangling style `%s'\n",
+			 program_name, optarg);
+		return (1);
+	      }
+	    else
+	      cplus_demangle_set_style (style);
+	  }
 	  break;
 	}
     }