HP merge changes by eepstein and ezannoni; added external flag

hp_som_som_object_present; added true and false tokens; changed some of
the template processing code for handling HP aCC templates.

gdb/ChangeLog

@@ -1,3 +1,16 @@
+Wed Jan  6 11:43:32 1999  David Taylor  <taylor@texas.cygnus.com>
+
+	The following changes were made by Elena Zannoni
+ 	<ezannoni@cygnus.com> and Edith Epstein <eepstein@cygnus.com> as
+ 	part of a project to merge in changes made by HP.
+
+	* c-exp.y: use external flag hp_som_som_object_present to decide
+ 	whether code was compiled by HP's compilers.  Add two new C++
+ 	tokens for true and false.
+        (yylex): check for template name is done differently for the
+ 	HP/aCC compiler case.  Change some of the template processing code
+ 	for handling HP aCC templates.  Handle true and false tokens.
+	
 Tue Jan  5 11:13:36 1999  Michael Snyder  <msnyder@cleaver.cygnus.com>
 
 	* remote.c (record_curthread): Must not modify inferior_pid when

gdb/c-exp.y

@@ -49,6 +49,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "symfile.h" /* Required by objfiles.h.  */
 #include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
 
+/* Flag indicating we're dealing with HP-compiled objects */ 
+extern int hp_som_som_object_present;
+
 /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
    as well as gratuitiously global symbol names, so we can have multiple
    yacc generated parsers in gdb.  Note that these are only the variables
@@ -195,6 +198,9 @@ parse_number PARAMS ((char *, int, int, YYSTYPE *));
 
 /* C++ */
 %token THIS
+%token TRUEKEYWORD
+%token FALSEKEYWORD
+
 
 %left ','
 %left ABOVE_COMMA
@@ -289,6 +295,7 @@ exp	:	exp ARROW qualified_name
 			  write_exp_elt_opcode (UNOP_ADDR);
 			  write_exp_elt_opcode (STRUCTOP_MPTR); }
 	;
+
 exp	:	exp ARROW '*' exp
 			{ write_exp_elt_opcode (STRUCTOP_MPTR); }
 	;
@@ -528,6 +535,20 @@ exp	:	THIS
 			  write_exp_elt_opcode (OP_THIS); }
 	;
 
+exp     :       TRUEKEYWORD    
+                        { write_exp_elt_opcode (OP_LONG);
+                          write_exp_elt_type (builtin_type_bool);
+                          write_exp_elt_longcst ((LONGEST) 1);
+                          write_exp_elt_opcode (OP_LONG); }
+	;
+
+exp     :       FALSEKEYWORD   
+                        { write_exp_elt_opcode (OP_LONG);
+                          write_exp_elt_type (builtin_type_bool);
+                          write_exp_elt_longcst ((LONGEST) 0);
+                          write_exp_elt_opcode (OP_LONG); }
+	;
+
 /* end of C++.  */
 
 block	:	BLOCKNAME
@@ -822,6 +843,9 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier */
 			{ $$ = lookup_signed_typename (TYPE_NAME($2.type)); }
 	|	SIGNED_KEYWORD
 			{ $$ = builtin_type_int; }
+                /* It appears that this rule for templates is never
+                   reduced; template recognition happens by lookahead
+                   in the token processing code in yylex. */         
 	|	TEMPLATE name '<' type '>'
 			{ $$ = lookup_template_type(copy_name($2), $4,
 						    expression_context_block);
@@ -1163,9 +1187,15 @@ yylex ()
   int tempbufindex;
   static char *tempbuf;
   static int tempbufsize;
+  struct symbol * sym_class = NULL;
+  char * token_string = NULL;
+  int class_prefix = 0;
+  int unquoted_expr;
    
  retry:
 
+  unquoted_expr = 1;
+
   tokstart = lexptr;
   /* See if it is a special token of length 3.  */
   for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
@@ -1217,6 +1247,7 @@ yylex ()
 	  if (namelen > 2)
 	    {
 	      lexptr = tokstart + namelen;
+              unquoted_expr = 0;
 	      if (lexptr[-1] != '\'')
 		error ("Unmatched single quote.");
 	      namelen -= 2;
@@ -1405,6 +1436,20 @@ yylex ()
 	 FIXME: This mishandles `print $a<4&&$a>3'.  */
 
       if (c == '<')
+	{ 
+           if (hp_som_som_object_present)
+             {
+               /* Scan ahead to get rest of the template specification.  Note
+                  that we look ahead only when the '<' adjoins non-whitespace
+                  characters; for comparison expressions, e.g. "a < b > c",
+                  there must be spaces before the '<', etc. */
+               
+               char * p = find_template_name_end (tokstart + namelen);
+               if (p)
+                 namelen = p - tokstart;
+               break;
+             }
+           else
              { 
 	       int i = namelen;
 	       int nesting_level = 1;
@@ -1423,6 +1468,7 @@ yylex ()
 	       else
 		 break;
 	     }
+	}
       c = tokstart[++namelen];
     }
 
@@ -1460,9 +1506,13 @@ yylex ()
 	return DOUBLE_KEYWORD;
       break;
     case 5:
-      if (current_language->la_language == language_cplus
+      if (current_language->la_language == language_cplus)
-	  && STREQN (tokstart, "class", 5))
+        {
+          if (STREQN (tokstart, "false", 5))
+            return FALSEKEYWORD;
+          if (STREQN (tokstart, "class", 5))
             return CLASS;
+        }
       if (STREQN (tokstart, "union", 5))
 	return UNION;
       if (STREQN (tokstart, "short", 5))
@@ -1475,8 +1525,12 @@ yylex ()
 	return ENUM;
       if (STREQN (tokstart, "long", 4))
 	return LONG;
-      if (current_language->la_language == language_cplus
+      if (current_language->la_language == language_cplus)
-	  && STREQN (tokstart, "this", 4))
+          {
+            if (STREQN (tokstart, "true", 4))
+              return TRUEKEYWORD;
+
+            if (STREQN (tokstart, "this", 4))
               {
                 static const char this_name[] =
                 { CPLUS_MARKER, 't', 'h', 'i', 's', '\0' };
@@ -1486,6 +1540,7 @@ yylex ()
                                    (struct symtab **) NULL))
                   return THIS;
               }
+          }
       break;
     case 3:
       if (STREQN (tokstart, "int", 3))
@@ -1504,6 +1559,24 @@ yylex ()
       return VARIABLE;
     }
   
+  /* Look ahead and see if we can consume more of the input
+     string to get a reasonable class/namespace spec or a
+     fully-qualified name.  This is a kludge to get around the
+     HP aCC compiler's generation of symbol names with embedded
+     colons for namespace and nested classes. */ 
+  if (unquoted_expr)
+    {
+      /* Only do it if not inside single quotes */ 
+      sym_class = parse_nested_classes_for_hpacc (yylval.sval.ptr, yylval.sval.length,
+                                                  &token_string, &class_prefix, &lexptr);
+      if (sym_class)
+        {
+          /* Replace the current token with the bigger one we found */ 
+          yylval.sval.ptr = token_string;
+          yylval.sval.length = strlen (token_string);
+        }
+    }
+  
   /* Use token-type BLOCKNAME for symbols that happen to be defined as
      functions or symtabs.  If this is not so, then ...
      Use token-type TYPENAME for symbols that happen to be defined