Complete StructuredData parity and parser hardening (#37)

tools/generate_api_shims.py

@@ -78,6 +78,13 @@ NATIVE_TYPES = {
     "T:LibreMetaverse.Utils": "crate::utils::Utils",
 }
 
+# Native declarations whose cataloged method implementations are still emitted
+# below. This is used for static namespace types such as OSDParser: the type is
+# hand-written, while its fixed public methods remain generator-audited.
+NATIVE_DECLARATIONS = {
+    "T:LibreMetaverse.StructuredData.OSDParser": "crate::model::OSDParser",
+}
+
 NATIVE_MEMBER_BODIES = {
     "M:LibreMetaverse.StructuredData.OSDParser.BufferCharactersEqual(System.IO.StringReader,System.Char[],System.Int32)":
         "crate::notation::buffer_characters_equal(reader, buffer, offset)",
@@ -762,9 +769,14 @@ def render_type(item: dict, type_row: dict, member_rows: dict[str, dict[str, str
         fields = [member for member in item["members"] if member["kind"] == "field" and not member.get("static")]
         private_fields = PRIVATE_LAYOUTS.get(item["doc_id"], [])
         base_type = item.get("base_type") if item["doc_id"] in COMPOSED_BASE_TYPES else None
-        if derives := VALUE_DERIVES.get(item["doc_id"]):
+        native_declaration = NATIVE_DECLARATIONS.get(item["doc_id"])
+        if native_declaration:
+            lines.append(f"pub use {native_declaration} as {rust_name};")
+        elif derives := VALUE_DERIVES.get(item["doc_id"]):
             lines.append(f"#[derive({derives})]")
-        if item["doc_id"] == "T:LibreMetaverse.StructuredData.OSD":
+        if native_declaration:
+            pass
+        elif item["doc_id"] == "T:LibreMetaverse.StructuredData.OSD":
             lines += [
                 "#[non_exhaustive]",
                 "pub enum OSD {",
@@ -990,7 +1002,7 @@ def coverage_report(catalog: dict, coverage: dict[str, tuple[int, int, bool]]) -
             native_type_ids = {
                 item["doc_id"]
                 for item in assembly["types"]
-                if item["doc_id"] in NATIVE_TYPES
+                if item["doc_id"] in NATIVE_TYPES or item["doc_id"] in NATIVE_DECLARATIONS
                 or (name == "LibreMetaverse.Types" and item["kind"] == "enum")
             }
             native_member_ids = {