Introduce func_static_var_operation

This adds class func_static_var_operation, which implements
OP_FUNC_STATIC_VAR.

gdb/ChangeLog
2021-03-08  Tom Tromey  <tom@tromey.com>

	* expop.h (class func_static_var_operation): New.
	* eval.c (eval_op_func_static_var): No longer static.

1 files changed, 24 insertions, 0 deletions

diff --git a/gdb/expop.h b/gdb/expop.h
index 033ea0b..8329bab 100644
--- a/gdb/expop.h
+++ b/gdb/expop.h
@@ -54,6 +54,10 @@ extern struct value *eval_op_var_msym_value (struct type *expect_type,
 extern struct value *eval_op_var_entry_value (struct type *expect_type,
 					      struct expression *exp,
 					      enum noside noside, symbol *sym);
+extern struct value *eval_op_func_static_var (struct type *expect_type,
+					      struct expression *exp,
+					      enum noside noside,
+					      value *func, const char *var);
 
 namespace expr
 {
@@ -555,6 +559,26 @@ public:
   { return OP_VAR_ENTRY_VALUE; }
 };
 
+class func_static_var_operation
+  : public maybe_constant_operation<operation_up, std::string>
+{
+public:
+
+  using maybe_constant_operation::maybe_constant_operation;
+
+  value *evaluate (struct type *expect_type,
+		   struct expression *exp,
+		   enum noside noside) override
+  {
+    value *func = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
+    return eval_op_func_static_var (expect_type, exp, noside, func,
+				    std::get<1> (m_storage).c_str ());
+  }
+
+  enum exp_opcode opcode () const override
+  { return OP_FUNC_STATIC_VAR; }
+};
+
 } /* namespace expr */
 
 #endif /* EXPOP_H */