Fix name canonicalization for doc writer

src/docs_writer.cpp

@@ -16,6 +16,8 @@ gb_global char const* OdinDocWriterState_strings[] {
 	"writing  ",
 };
 
+gb_global std::atomic<bool> g_in_doc_writer;
+
 struct OdinDocWriter {
 	CheckerInfo *info;
 	OdinDocWriterState state;
@@ -1137,6 +1139,8 @@ gb_internal void odin_doc_write_to_file(OdinDocWriter *w, char const *filename)
 }
 
 gb_internal void odin_doc_write(CheckerInfo *info, char const *filename) {
+	g_in_doc_writer.store(true);
+
 	OdinDocWriter w_ = {};
 	OdinDocWriter *w = &w_;
 	defer (odin_doc_writer_destroy(w));
@@ -1152,4 +1156,11 @@ gb_internal void odin_doc_write(CheckerInfo *info, char const *filename) {
 	odin_doc_writer_end_writing(w);
 
 	odin_doc_write_to_file(w, filename);
+
+	g_in_doc_writer.store(false);
 }
+
+
+gb_internal bool is_in_doc_writer(void) {
+	return g_in_doc_writer.load();
+}

src/name_canonicalization.cpp

@@ -520,6 +520,8 @@ gb_internal void write_canonical_entity_name(TypeWriter *w, Entity *e) {
 	return;
 }
 
+gb_internal bool is_in_doc_writer(void);
+
 // NOTE(bill): This exists so that we deterministically hash a type by serializing it to a canonical string
 gb_internal void write_type_to_canonical_string(TypeWriter *w, Type *type) {
 	if (type == nullptr) {
@@ -719,7 +721,13 @@ gb_internal void write_type_to_canonical_string(TypeWriter *w, Type *type) {
 		return;
 
 	case Type_Generic:
-		GB_PANIC("Type_Generic should never be hit");
+		if (is_in_doc_writer()) {
+			type_writer_appendc(w, "$");
+			type_writer_append(w, type->Generic.name.text, type->Generic.name.len);
+			type_writer_append_fmt(w, "%lld", cast(long long)type->Generic.id);
+		} else {
+			GB_PANIC("Type_Generic should never be hit");
+		}
 		return;
 
 	case Type_Named: