From 039e4b76be2741e3813a691f12cc5550eb6e891d Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Mon, 8 Mar 2021 07:27:57 -0700
Subject: [PATCH] Introduce ada_bitwise_operation
This adds class ada_bitwise_operation, which is used to implement the
Ada bitwise operators.
gdb/ChangeLog
2021-03-08 Tom Tromey <tom@tromey.com>
* ada-exp.h (ada_bitwise_operation): New template class.
(ada_bitwise_and_operation, ada_bitwise_ior_operation)
(ada_bitwise_xor_operation): New typedefs.
---
gdb/ChangeLog | 6 ++++++
gdb/ada-exp.h | 27 +++++++++++++++++++++++++++
2 files changed, 33 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f34ce4b06c7..62c71b7c534 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2021-03-08 Tom Tromey <tom@tromey.com>
+
+ * ada-exp.h (ada_bitwise_operation): New template class.
+ (ada_bitwise_and_operation, ada_bitwise_ior_operation)
+ (ada_bitwise_xor_operation): New typedefs.
+
2021-03-08 Tom Tromey <tom@tromey.com>
* ada-lang.c (ada_equal_binop): No longer static.
diff --git a/gdb/ada-exp.h b/gdb/ada-exp.h
index 3091323c89e..d8f18b9c61f 100644
--- a/gdb/ada-exp.h
+++ b/gdb/ada-exp.h
@@ -186,6 +186,33 @@ public:
{ return std::get<0> (m_storage); }
};
+/* Bitwise operators for Ada. */
+template<enum exp_opcode OP>
+class ada_bitwise_operation
+ : public maybe_constant_operation<operation_up, operation_up>
+{
+public:
+
+ using maybe_constant_operation::maybe_constant_operation;
+
+ value *evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside) override
+ {
+ value *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
+ value *rhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
+ value *result = eval_op_binary (expect_type, exp, noside, OP, lhs, rhs);
+ return value_cast (value_type (lhs), result);
+ }
+
+ enum exp_opcode opcode () const override
+ { return OP; }
+};
+
+using ada_bitwise_and_operation = ada_bitwise_operation<BINOP_BITWISE_AND>;
+using ada_bitwise_ior_operation = ada_bitwise_operation<BINOP_BITWISE_IOR>;
+using ada_bitwise_xor_operation = ada_bitwise_operation<BINOP_BITWISE_XOR>;
+
} /* namespace expr */
#endif /* ADA_EXP_H */