gdb: Convert language_data::la_exp_desc to a method

Convert language_data::la_exp_desc member variable to a virtual
method language_defn::expression_ops.  The change of names brings this
method more into line with the existing varobj_ops method, that also
returns a table of function pointers.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_exp_desc initializer.
	(ada_language::expression_ops): New member function.
	* c-lang.c (c_language_data): Remove la_exp_desc initializer.
	(c_language::expression_ops): New member function.
	(cplus_language_data): Remove la_exp_desc initializer.
	(cplus_language::expression_ops): New member function.
	(asm_language_data): Remove la_exp_desc initializer.
	(asm_language::expression_ops): New member function.
	(minimal_language_data): Remove la_exp_desc initializer.
	(minimal_language::expression_ops): New member function.
	* d-lang.c (d_language_data): Remove la_exp_desc initializer.
	(d_language::expression_ops): New member function.
	* eval.c (evaluate_subexp): Update call to expression_ops.
	* expprint.c (print_subexp): Likewise.
	(op_name): Likewise.
	(dump_subexp_body): Likewise.
	* f-lang.c (f_language_data): Remove la_exp_desc initializer.
	(f_language::expression_ops): New member function.
	* go-lang.c (go_language_data): Remove la_exp_desc initializer.
	(go_language::expression_ops): New member function.
	* language.c (language_defn::expression_ops): New function.
	(unknown_language_data): Remove la_exp_desc initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_exp_desc field.
	(language_defn::expression_ops): Declare new member function.
	* m2-lang.c (m2_language_data): Remove la_exp_desc initializer.
	(m2_language::expression_ops): New member function.
	* objc-lang.c (objc_language_data): Remove la_exp_desc
	initializer.
	* opencl-lang.c (opencl_language_data): Remove la_exp_desc
	initializer.
	(opencl_language::expression_ops): New member function.
	* p-lang.c (pascal_language_data): Remove la_exp_desc initializer.
	* parse.c (operator_length): Update call to expression_ops.
	(exp_iterate): Likewise.
	* rust-lang.c (rust_language_data): Remove la_exp_desc
	initializer.
	(ruse_language::expression_ops): New member function.

1 files changed, 5 insertions, 4 deletions

diff --git a/gdb/parse.c b/gdb/parse.c
index 2fb474e..37bafe4 100644
--- a/gdb/parse.c
+++ b/gdb/parse.c
@@ -762,8 +762,8 @@ void
 operator_length (const struct expression *expr, int endpos, int *oplenp,
 		 int *argsp)
 {
-  expr->language_defn->la_exp_desc->operator_length (expr, endpos,
-						     oplenp, argsp);
+  expr->language_defn->expression_ops ()->operator_length (expr, endpos,
+							   oplenp, argsp);
 }
 
 /* Default value for operator_length in exp_descriptor vectors.  */
@@ -1374,8 +1374,9 @@ exp_iterate (struct expression *exp,
       gdb_assert (oplen > 0);
 
       pos = endpos - oplen;
-      if (exp->language_defn->la_exp_desc->operator_check (exp, pos,
-							   objfile_func, data))
+      if (exp->language_defn->expression_ops ()->operator_check (exp, pos,
+								 objfile_func,
+								 data))
 	return 1;
 
       endpos = pos;