Function write_field

library/LuaTypes.cpp:586–625

}

static void write_field(lua_State *state, const struct_field_info *field, void *ptr, int value_idx)
{
    switch (field->mode)
    {
        case struct_field_info::STATIC_STRING:
        {
            size_t size;
            const char *str = lua_tolstring(state, value_idx, &size);
            if (!str)
                field_error(state, 2, "string expected", "write");
            memcpy(ptr, str, std::min(size+1, size_t(field->count)));
            return;
        }

        case struct_field_info::OBJ_METHOD:
        case struct_field_info::CLASS_METHOD:
            // error

        case struct_field_info::PRIMITIVE:
        case struct_field_info::SUBSTRUCT:
        case struct_field_info::CONTAINER:
            field->type->lua_write(state, 2, ptr, value_idx);
            return;

        case struct_field_info::POINTER:
            df::pointer_identity::lua_write(state, 2, ptr, field->type, value_idx);
            return;

        case struct_field_info::STATIC_ARRAY:
        case struct_field_info::STL_VECTOR_PTR:
            lua_getfield(state, LUA_REGISTRYINDEX, DFHACK_ASSIGN_NAME);
            read_field(state, field, ptr);
            lua_pushvalue(state, value_idx);
            lua_call(state, 2, 0);
            return;

        case struct_field_info::END:
            return;
    }
}

/**
 * Metamethod: __index for structures.