Function assign_unit_indices

src/resource/unit_compiler.cpp:1075–1122

	s32 flatten(UnitCompiler &c, CompileOptions &opts);

	s32 assign_unit_indices(UnitCompiler &c, Unit *unit, u32 parent_unit_index, CompileOptions &opts)
	{
		const u32 unit_index = c._num_units;
		const u32 root_unit_index = parent_unit_index == UINT32_MAX
			? unit_index
			: c._unit_roots[parent_unit_index]
			;
		unit->_index = unit_index;
		array::push_back(c._unit_parents, parent_unit_index);
		array::push_back(c._unit_roots, root_unit_index);
		array::push_back(c._unit_names, unit->_editor_name);
		++c._num_units;

		for (u32 cc = 0; cc < array::size(unit->_merged_components); ++cc) {
			TempAllocator512 ta;
			JsonObject component(ta);
			RETURN_IF_ERROR(sjson::parse(component, unit->_merged_components[cc]));

			Guid component_id;
			if (json_object::has(component, "id")) {
				component_id = RETURN_IF_ERROR(sjson::parse_guid(component["id"]));
			} else {
				component_id = RETURN_IF_ERROR(sjson::parse_guid(component["_guid"]));
			}

			StringId32 comp_type;
			if (!json_object::has(component, "_type")) {
				comp_type = RETURN_IF_ERROR(sjson::parse_string_id(component["type"]));
			} else {
				comp_type = RETURN_IF_ERROR(sjson::parse_string_id(component["_type"]));
			}

			const ComponentKey key = { component_id, root_unit_index };
			hash_map::set(c._component_unit_index, key, unit_index);
			hash_map::set(c._component_type, key, comp_type);
		}

		auto cur = hash_map::begin(unit->_children);
		auto end = hash_map::end(unit->_children);
		for (; cur != end; ++cur) {
			HASH_MAP_SKIP_HOLE(unit->_children, cur);

			s32 err = assign_unit_indices(c, cur->second, unit_index, opts);
			ENSURE_OR_RETURN(UNIT_COMPILER, err == 0, opts);
		}

		return 0;
	}

	s32 parse_unit_from_json(UnitCompiler &c, const char *unit_json, CompileOptions &opts)
	{