ENH: Added temporal, engineering, and parametric datum PJ_TYPE enumerations

src/iso19111/c_api.cpp

@@ -915,6 +915,18 @@ convertPJObjectTypeToObjectType(PJ_TYPE type, bool &valid) {
         cppType = AuthorityFactory::ObjectType::DATUM;
         break;
 
+    case PJ_TYPE_TEMPORAL_DATUM:
+        valid = false;
+        break;
+
+    case PJ_TYPE_ENGINEERING_DATUM:
+        valid = false;
+        break;
+
+    case PJ_TYPE_PARAMETRIC_DATUM:
+        valid = false;
+        break;
+
     case PJ_TYPE_CRS:
         cppType = AuthorityFactory::ObjectType::CRS;
         break;
@@ -1084,6 +1096,15 @@ PJ_TYPE proj_get_type(const PJ *obj) {
     if (dynamic_cast<DatumEnsemble *>(ptr)) {
         return PJ_TYPE_DATUM_ENSEMBLE;
     }
+    if (dynamic_cast<TemporalDatum *>(ptr)) {
+        return PJ_TYPE_TEMPORAL_DATUM;
+    }
+    if (dynamic_cast<EngineeringDatum *>(ptr)) {
+        return PJ_TYPE_ENGINEERING_DATUM;
+    }
+    if (dynamic_cast<ParametricDatum *>(ptr)) {
+        return PJ_TYPE_PARAMETRIC_DATUM;
+    }
 
     {
         auto crs = dynamic_cast<GeographicCRS *>(ptr);

src/proj.h

@@ -735,6 +735,10 @@ typedef enum
     PJ_TYPE_TRANSFORMATION,
     PJ_TYPE_CONCATENATED_OPERATION,
     PJ_TYPE_OTHER_COORDINATE_OPERATION,
+
+    PJ_TYPE_TEMPORAL_DATUM,
+    PJ_TYPE_ENGINEERING_DATUM,
+    PJ_TYPE_PARAMETRIC_DATUM,
 } PJ_TYPE;
 
 /** Comparison criterion. */

test/unit/test_c_api.cpp

@@ -713,6 +713,34 @@ TEST_F(CApi, proj_get_type) {
         ASSERT_NE(obj, nullptr);
         EXPECT_EQ(proj_get_type(obj), PJ_TYPE_VERTICAL_CRS);
     }
+    {
+        auto wkt = "TDATUM[\"Gregorian calendar\",\n"
+                   "     CALENDAR[\"proleptic Gregorian\"],\n"
+                   "     TIMEORIGIN[0000-01-01]]";
+
+        auto datum = proj_create_from_wkt(
+            m_ctxt, wkt,
+            nullptr, nullptr, nullptr);
+        ObjectKeeper keeper(datum);
+        ASSERT_NE(datum, nullptr);
+        EXPECT_EQ(proj_get_type(datum), PJ_TYPE_TEMPORAL_DATUM);
+    }
+    {
+        auto wkt = "ENGINEERINGDATUM[\"Engineering datum\"]";
+        auto datum = proj_create_from_wkt(
+            m_ctxt, wkt,
+            nullptr, nullptr, nullptr);
+        ObjectKeeper keeper(datum);
+        EXPECT_EQ(proj_get_type(datum), PJ_TYPE_ENGINEERING_DATUM);
+    }
+    {
+        auto wkt = "PDATUM[\"Mean Sea Level\",ANCHOR[\"1013.25 hPa at 15°C\"]]";
+        auto datum = proj_create_from_wkt(
+            m_ctxt, wkt,
+            nullptr, nullptr, nullptr);
+        ObjectKeeper keeper(datum);
+        EXPECT_EQ(proj_get_type(datum), PJ_TYPE_PARAMETRIC_DATUM);
+    }
     {
         auto obj = proj_create_from_wkt(
             m_ctxt, createVerticalCRS()
@@ -1132,6 +1160,9 @@ TEST_F(CApi, proj_get_codes_from_database) {
                              PJ_TYPE_VERTICAL_REFERENCE_FRAME,
                              PJ_TYPE_DYNAMIC_VERTICAL_REFERENCE_FRAME,
                              PJ_TYPE_DATUM_ENSEMBLE,
+                             PJ_TYPE_TEMPORAL_DATUM,
+                             PJ_TYPE_ENGINEERING_DATUM,
+                             PJ_TYPE_PARAMETRIC_DATUM,
 
                              PJ_TYPE_CRS,
                              PJ_TYPE_GEODETIC_CRS,
@@ -1156,7 +1187,8 @@ TEST_F(CApi, proj_get_codes_from_database) {
         auto list = proj_get_codes_from_database(m_ctxt, "EPSG", type, true);
         ListFreer feer(list);
         if (type == PJ_TYPE_TEMPORAL_CRS || type == PJ_TYPE_BOUND_CRS ||
-            type == PJ_TYPE_UNKNOWN) {
+            type == PJ_TYPE_UNKNOWN || type == PJ_TYPE_TEMPORAL_DATUM ||
+            type == PJ_TYPE_ENGINEERING_DATUM || type == PJ_TYPE_PARAMETRIC_DATUM) {
             EXPECT_EQ(list, nullptr) << type;
         } else {
             ASSERT_NE(list, nullptr) << type;