gdb: Convert language la_word_break_characters field to a method

This commit changes the language_data::la_word_break_characters
function pointer member variable into a member function of
language_defn.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_get_gdb_completer_word_break_characters): Delete.
	(ada_language_data): Delete la_word_break_characters initializer.
	(ada_language::word_break_characters): New member function.
	* c-lang.c (c_language_data): Delete la_word_break_characters
	initializer.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* completer.c: Update global comment.
	(advance_to_expression_complete_word_point): Update call to
	word_break_characters.
	(complete_files_symbols): Likewise.
	(complete_line_internal_1): Likewise.
	(default_completer_handle_brkchars): Likewise.
	(skip_quoted_chars): Likewise.
	* d-lang.c (d_language_data): Delete la_word_break_characters
	initializer.
	* f-lang.c (f_word_break_characters): Delete.
	(f_language_data): Delete la_word_break_characters initializer.
	(f_language::word_break_characters): New member function.
	* go-lang.c (go_language_data): Delete la_word_break_characters
	initializer.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (default_word_break_characters): Move declaration to
	earlier in the file.
	(language_data): Delete la_word_break_characters field.
	(language_defn::word_break_characters): New member function.
	* m2-lang.c (m2_language_data): Delete la_word_break_characters
	initializer.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.

1 files changed, 9 insertions, 6 deletions

diff --git a/gdb/language.h b/gdb/language.h
index 7e5837f..8c6f7e3 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -169,6 +169,9 @@ struct language_pass_by_ref_info
   bool destructible = true;
 };
 
+/* Splitting strings into words.  */
+extern const char *default_word_break_characters (void);
+
 /* Structure tying together assorted information about a language.
 
    As we move over from the old structure based languages to a class
@@ -316,9 +319,6 @@ struct language_data
     /* Index to use for extracting the first element of a string.  */
     char string_lower_bound;
 
-    /* The list of characters forming word boundaries.  */
-    const char *(*la_word_break_characters) (void);
-
     /* Add to the completion tracker all symbols which are possible
        completions for TEXT.  WORD is the entire command on which the
        completion is being made.  If CODE is TYPE_CODE_UNDEF, then all
@@ -529,6 +529,12 @@ struct language_defn : language_data
     return nullptr;
   }
 
+  /* The list of characters forming word boundaries.  */
+  virtual const char *word_break_characters (void) const
+  {
+    return default_word_break_characters ();
+  }
+
   /* List of all known languages.  */
   static const struct language_defn *languages[nr_languages];
 
@@ -691,9 +697,6 @@ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
 extern char *language_demangle (const struct language_defn *current_language, 
 				const char *mangled, int options);
 
-/* Splitting strings into words.  */
-extern const char *default_word_break_characters (void);
-
 /* Return information about whether TYPE should be passed
    (and returned) by reference at the language level.  */
 struct language_pass_by_ref_info language_pass_by_reference (struct type *type);