Generate the npoint network-point family (tnpoint, npoint, nsegment)

CMakeLists.txt

@@ -77,6 +77,7 @@ include_directories(SYSTEM duckdb-spatial/src/spatial)
 
 set(EXTENSION_SOURCES
     src/spatial_ref_sys_csv.inc
+    src/ways_csv.inc
     src/mobilityduck_extension.cpp
     src/generated/generated_temporal_udfs.cpp
     src/generated/generated_type_registration.cpp
@@ -121,6 +122,7 @@ set(EXTENSION_SOURCES
     src/json/tjsonb_in_out.cpp
     src/h3/th3index.cpp
     src/cbuffer/tcbuffer.cpp
+    src/npoint/tnpoint.cpp
     src/index/rtree_module.cpp
     src/single_tile_getters.cpp
     src/index/rtree_index_create_physical.cpp

src/include/npoint/tnpoint.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include "meos_wrapper_simple.hpp"
+#include "duckdb/common/exception.hpp"
+#include "duckdb/common/string_util.hpp"
+#include "duckdb/function/scalar_function.hpp"
+#include "duckdb/main/extension/extension_loader.hpp"
+#include <duckdb/parser/parsed_data/create_scalar_function_info.hpp>
+
+namespace duckdb {
+
+/* npoint is a network point (a route identifier + a fractional position); a
+ * varlena value surfaced as a BLOB.  nsegment is a network segment (route +
+ * two positions).  tnpoint is the temporal network point, stored as a
+ * Temporal* blob.  Canonical names per meos_catalog.c ([T_NPOINT]="npoint" :138,
+ * [T_NSEGMENT]="nsegment" :140, [T_TNPOINT]="tnpoint" :141).  npoint is the
+ * 2D-planar twin of cbuffer: both are Spatial<T> base values, non-geodetic.
+ * npoint carries NO SRID of its own — npoint_srid() returns get_srid_ways(), so
+ * the `ways` network CSV must be loaded (meos_set_ways_csv) for construction and
+ * geometry ops to resolve.  This binding registers only the type + text I/O
+ * boundary; the operation surface (constructors, accessors, predicates,
+ * distance, …) is generated from the MEOS-API catalog into src/generated/. */
+struct NpointTypes {
+    static LogicalType npoint();
+    static LogicalType nsegment();
+    static LogicalType tnpoint();
+
+    static void RegisterTypes(ExtensionLoader &loader);
+    static void RegisterCastFunctions(ExtensionLoader &loader);
+};
+
+struct NpointFunctions {
+    /* In/out — static npoint value */
+    static bool Npoint_in_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+    static bool Npoint_out_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+
+    /* In/out — static nsegment value */
+    static bool Nsegment_in_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+    static bool Nsegment_out_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+
+    /* In/out — tnpoint temporal value */
+    static bool Tnpoint_in_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+    static bool Tnpoint_out_cast(Vector &source, Vector &result, idx_t count, CastParameters &parameters);
+};
+
+} // namespace duckdb