Add optional size parameter to ReadFromBufferInPlace

Signed-off-by: Nicholas Van Sickle <nvsickle@amazon.com>

Code/Framework/AzCore/AzCore/DOM/Backends/JSON/JsonBackend.h

@@ -27,7 +27,7 @@ namespace AZ::Dom
             return Json::VisitSerializedJson<ParseFlags>({ buffer, size }, lifetime, visitor);
         }
 
-        Visitor::Result ReadFromBufferInPlace(char* buffer, Visitor& visitor) override
+        Visitor::Result ReadFromBufferInPlace(char* buffer, [[maybe_unused]] AZStd::optional<size_t> size, Visitor& visitor) override
         {
             return Json::VisitSerializedJsonInPlace<ParseFlags>(buffer, visitor);
         }

Code/Framework/AzCore/AzCore/DOM/DomBackend.cpp

@@ -10,8 +10,8 @@
 
 namespace AZ::Dom
 {
-    Visitor::Result Backend::ReadFromBufferInPlace(char* buffer, Visitor& visitor)
+    Visitor::Result Backend::ReadFromBufferInPlace(char* buffer, AZStd::optional<size_t> size, Visitor& visitor)
     {
-        return ReadFromBuffer(buffer, strlen(buffer), AZ::Dom::Lifetime::Persistent, visitor);
+        return ReadFromBuffer(buffer, size.value_or(strlen(buffer)), AZ::Dom::Lifetime::Persistent, visitor);
     }
 } // namespace AZ::Dom

Code/Framework/AzCore/AzCore/DOM/DomBackend.h

@@ -12,6 +12,7 @@
 #include <AzCore/IO/GenericStreams.h>
 #include <AzCore/IO/Path/Path.h>
 #include <AzCore/std/containers/vector.h>
+#include <AzCore/std/optional.h>
 #include <AzCore/std/smart_ptr/unique_ptr.h>
 
 namespace AZ::Dom
@@ -32,7 +33,7 @@ namespace AZ::Dom
         //! - The string won't be deallocated until the visitor no longer needs the values and
         //! - The string is safe to modify in place.
         //! The base implementation simply calls ReadFromBuffer.
-        virtual Visitor::Result ReadFromBufferInPlace(char* buffer, Visitor& visitor);
+        virtual Visitor::Result ReadFromBufferInPlace(char* buffer, AZStd::optional<size_t> size, Visitor& visitor);
 
         //! A callback that accepts a Visitor, making DOM calls to inform the serializer, and returns an
         //! aggregate error code to indicate whether or not the operation succeeded.

Code/Framework/AzCore/AzCore/DOM/DomUtils.cpp

@@ -19,7 +19,7 @@ namespace AZ::Dom::Utils
 
     Visitor::Result ReadFromStringInPlace(Backend& backend, AZStd::string& string, Visitor& visitor)
     {
-        return backend.ReadFromBufferInPlace(string.data(), visitor);
+        return backend.ReadFromBufferInPlace(string.data(), string.size(), visitor);
     }
 
     Visitor::Result WriteToString(Backend& backend, AZStd::string& buffer, Backend::WriteCallback writeCallback)