[PATCH 082/203] Introduce last_operation

Tom Tromey
2021-01-01T21:48:22Z

This adds class last_operation, which implements OP_LAST.

gdb/ChangeLog
2021-01-01 Tom Tromey <tom@tromey.com>

* expop.h (class last_operation): New.
---
gdb/ChangeLog | 4 ++++
gdb/expop.h | 18 ++++++++++++++++++
2 files changed, 22 insertions(+)

diff --git a/gdb/expop.h b/gdb/expop.h
index 49f1f561019..110ad0a29ab 100644
--- a/gdb/expop.h
+++ b/gdb/expop.h
@@ -568,6 +568,24 @@ class func_static_var_operation
{ return OP_FUNC_STATIC_VAR; }
};

+class last_operation
+ : public tuple_holding_operation<int>
+{
+public:
+
+ using tuple_holding_operation::tuple_holding_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ return access_value_history (std::get<0> (m_storage));
+ }
+
+ enum exp_opcode opcode () const override
+ { return OP_LAST; }
+};
+
} /* namespace expr */

#endif /* EXPOP_H */
--
2.26.2