[RFA] Add new language: "unsupported"

[Joel Brobecker]

>  > 2003-05-06  J. Brobecker  <brobecker@gnat.com>
>  > 
>  >         * defs.h (language): Add language_unsupported enum value.
>  >         * c-lang.c (unsupported_language_defn): New language definition.
>  >         (_initialize_c_language): Add the new unsupported language to
>  >         the list of languages known to GDB.
>  > 
>  > Ok to apply?
> 
> Yes, modulus the name choice. Could you add a few more comments on
> what this new language is suitable for, etc? 

Thanks. Below is what I ended up comitting.

A test-case is coming up. I will also have a look at the documentation.

2003-05-08  J. Brobecker  <brobecker@gnat.com>

        * defs.h (language): Add language_minimal enum value.
        * c-lang.c (minimal_language_defn): New language definition.
        (_initialize_c_language): Add the new minimal language to the list
        of languages known to GDB.

-- 
Joel
-------------- next part --------------
Index: defs.h
===================================================================
RCS file: /cvs/src/src/gdb/defs.h,v
retrieving revision 1.118
diff -c -3 -p -r1.118 defs.h
*** defs.h	10 Apr 2003 02:18:40 -0000	1.118
--- defs.h	8 May 2003 17:29:20 -0000
*************** enum language
*** 211,217 ****
      language_m2,		/* Modula-2 */
      language_asm,		/* Assembly language */
      language_scm,    		/* Scheme / Guile */
!     language_pascal		/* Pascal */
    };
  
  enum precision_type
--- 211,218 ----
      language_m2,		/* Modula-2 */
      language_asm,		/* Assembly language */
      language_scm,    		/* Scheme / Guile */
!     language_pascal,		/* Pascal */
!     language_minimal		/* All other languages, minimal support only */
    };
  
  enum precision_type
Index: c-lang.c
===================================================================
RCS file: /cvs/src/src/gdb/c-lang.c,v
retrieving revision 1.18
diff -c -3 -p -r1.18 c-lang.c
*** c-lang.c	2 Apr 2003 03:02:46 -0000	1.18
--- c-lang.c	8 May 2003 17:29:21 -0000
*************** const struct language_defn asm_language_
*** 651,660 ****
--- 651,697 ----
    LANG_MAGIC
  };
  
+ /* The following language_defn does not represent a real language.
+    It just provides a minimal support a-la-C that should allow users
+    to do some simple operations when debugging applications that use
+    a language currently not supported by GDB.  */
+ 
+ const struct language_defn minimal_language_defn =
+ {
+   "minimal",			/* Language name */
+   language_minimal,
+   c_builtin_types,
+   range_check_off,
+   type_check_off,
+   case_sensitive_on,
+   c_preprocess_and_parse,
+   c_error,
+   evaluate_subexp_standard,
+   c_printchar,			/* Print a character constant */
+   c_printstr,			/* Function to print string constant */
+   c_emit_char,			/* Print a single char */
+   c_create_fundamental_type,	/* Create fundamental type in this language */
+   c_print_type,			/* Print a type using appropriate syntax */
+   c_val_print,			/* Print a value using appropriate syntax */
+   c_value_print,		/* Print a top-level value */
+   NULL,				/* Language specific skip_trampoline */
+   NULL,				/* Language specific symbol demangler */
+   {"", "", "", ""},		/* Binary format info */
+   {"0%lo", "0", "o", ""},	/* Octal format info */
+   {"%ld", "", "d", ""},		/* Decimal format info */
+   {"0x%lx", "0x", "x", ""},	/* Hex format info */
+   c_op_print_tab,		/* expression operators for printing */
+   1,				/* c-style arrays */
+   0,				/* String lower bound */
+   &builtin_type_char,		/* Type of string elements */
+   LANG_MAGIC
+ };
+ 
  void
  _initialize_c_language (void)
  {
    add_language (&c_language_defn);
    add_language (&cplus_language_defn);
    add_language (&asm_language_defn);
+   add_language (&minimal_language_defn);
  }