gdb: Convert language la_watch_location_expression field to a method

This commit changes the language_data::la_watch_location_expression
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_watch_location_expression): Rename to
	ada_language::watch_location_expression.
	(ada_language_data): Delete la_watch_location_expression
	initializer.
	(ada_language::watch_location_expression): New member function,
	implementation from ada_watch_location_expression.
	* breakpoint.c (watch_command_1): Update call to
	watch_location_expression.
	* c-lang.c (c_watch_location_expression): Rename to
	language_defn::watch_location_expression.
	(c_language_data): Delete la_watch_location_expression
	initializer.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* c-lang.h (c_watch_location_expression): Delete declaration.
	* d-lang.c (d_language_data): Delete la_watch_location_expression
	initializer.
	* f-lang.c (f_language_data): Likewise.
	* go-lang.c (go_language_data): Likewise.
	* language.c (language_defn::watch_location_expression): Member
	function implementation from c_watch_location_expression.
	(unknown_language_data): Delete la_watch_location_expression
	initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Delete la_watch_location_expression
	field.
	(language_defn::watch_location_expression): Declare new member
	function.
	* m2-lang.c (m2_language_data): Delete
	la_watch_location_expression 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_watch_location_expression): Rename to
	rust_language::watch_location_expression.
	(rust_language_data): Delete la_watch_location_expression
	initializer.
	(rust_language::watch_location_expression): New member function,
	implementation from rust_watch_location_expression.

1 files changed, 12 insertions, 15 deletions

diff --git a/gdb/rust-lang.c b/gdb/rust-lang.c
index 47fc3db..fec68e3 100644
--- a/gdb/rust-lang.c
+++ b/gdb/rust-lang.c
@@ -2006,20 +2006,6 @@ rust_lookup_symbol_nonlocal (const struct language_defn *langdef,
 
 
 
-/* la_watch_location_expression for Rust.  */
-
-static gdb::unique_xmalloc_ptr<char>
-rust_watch_location_expression (struct type *type, CORE_ADDR addr)
-{
-  type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type)));
-  std::string name = type_to_string (type);
-  return gdb::unique_xmalloc_ptr<char>
-    (xstrprintf ("*(%s as *mut %s)", core_addr_to_string (addr),
-		 name.c_str ()));
-}
-
-
-
 static const struct exp_descriptor exp_descriptor_rust = 
 {
   rust_print_subexp,
@@ -2062,7 +2048,6 @@ extern const struct language_data rust_language_data =
   c_op_print_tab,		/* expression operators for printing */
   1,				/* c-style arrays */
   0,				/* String lower bound */
-  rust_watch_location_expression,
   &default_varobj_ops,
   rust_is_string_type_p,
   "{...}"			/* la_struct_too_deep_ellipsis */
@@ -2143,6 +2128,18 @@ public:
     rust_internal_print_type (type, varstring, stream, show, level,
 			      flags, false, &podata);
   }
+
+  /* See language.h.  */
+
+  gdb::unique_xmalloc_ptr<char> watch_location_expression
+	(struct type *type, CORE_ADDR addr) const override
+  {
+    type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type)));
+    std::string name = type_to_string (type);
+    return gdb::unique_xmalloc_ptr<char>
+      (xstrprintf ("*(%s as *mut %s)", core_addr_to_string (addr),
+		   name.c_str ()));
+  }
 };
 
 /* Single instance of the Rust language class.  */