[PATCH 1/2] optional: add operator== and operator!=

[Giuliano Procida <gprocida@google.com>]

	* include/abg-cxx-compat.h (optional): Add operator== and
	operator!=.

Signed-off-by: Giuliano Procida <gprocida@google.com>
---
 include/abg-cxx-compat.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/abg-cxx-compat.h b/include/abg-cxx-compat.h
index 443905c7..a2cf9095 100644
--- a/include/abg-cxx-compat.h
+++ b/include/abg-cxx-compat.h
@@ -91,6 +91,22 @@ public:
   }
 
   explicit operator bool() const { return has_value_; }
+
+  bool
+  operator==(const optional<T>& other) const
+  {
+    if (!has_value_ && !other.has_value_)
+      return true;
+    if (!has_value_ || !other.has_value_)
+      return false;
+    return value_ == other.value_;
+  }
+
+  bool
+  operator!=(const optional<T>& other) const
+  {
+    return !operator==(other);
+  }
 };
 
 #endif
-- 
2.35.1.723.g4982287a31-goog