use Michael Davidsaver version of introspection

pvDataApp/factory/Compare.cpp

@@ -0,0 +1,83 @@
+
+#include "convert.h"
+
+#include <algorithm>
+#include <iterator>
+#include <sstream>
+
+namespace epics { namespace pvData {
+
+// Introspection object comparision
+
+/** Field equality conditions:
+ * 1) same instance
+ * 2) same type (field and scalar/element)
+ * Note: not the same name
+ */
+bool operator==(const Field& a, const Field& b)
+{
+    if(&a==&b)
+        return true;
+    if(a.getType()!=b.getType())
+        return false;
+    switch(a.getType()) {
+    case scalar: {
+        const Scalar &A=static_cast<const Scalar&>(a);
+        const Scalar &B=static_cast<const Scalar&>(b);
+        return A==B;
+    }
+    case scalarArray: {
+            const ScalarArray &A=static_cast<const ScalarArray&>(a);
+            const ScalarArray &B=static_cast<const ScalarArray&>(b);
+            return A==B;
+        }
+    case structure: {
+            const Structure &A=static_cast<const Structure&>(a);
+            const Structure &B=static_cast<const Structure&>(b);
+            return A==B;
+        }
+    case structureArray: {
+            const StructureArray &A=static_cast<const StructureArray&>(a);
+            const StructureArray &B=static_cast<const StructureArray&>(b);
+            return A==B;
+        }
+    default:
+        throw std::logic_error("Invalid Field type in comparision");
+    }
+}
+
+bool operator==(const Scalar& a, const Scalar& b)
+{
+    if(&a==&b)
+        return true;
+    return a.getScalarType()==b.getScalarType();
+}
+
+bool operator==(const ScalarArray& a, const ScalarArray& b)
+{
+    if(&a==&b)
+        return true;
+    return a.getElementType()==b.getElementType();
+}
+
+bool operator==(const Structure& a, const Structure& b)
+{
+    if(&a==&b)
+        return true;
+    int nflds=a.getNumberFields();
+    if (b.getNumberFields()!=nflds)
+        return false;
+    return std::equal(a.getFields(), a.getFields()+nflds,
+                      b.getFields());
+}
+
+bool operator==(const StructureArray& a, const StructureArray& b)
+{
+    return a.structure() == b.structure();
+}
+
+namespace nconvert {
+
+} // namespace nconvert
+
+}} // namespace epics::pvData