feat(furvm): introduce slice type

Refs: #63

furvm/src/main.cpp

@@ -30,6 +30,14 @@ static void print_thing(const furvm::thing<>& thing) {
         }
         std::cout << " }";
         break;
+    case thing_type::Slice:
+        std::cout << "Slice [" << thing.length() << "] { ";
+        for (thing_type::u64 i = 0; i < thing.length(); ++i) {
+            if (i > 0) std::cout << ", ";
+            print_thing(thing.at(i));
+        }
+        std::cout << " }";
+        break;
     default: std::cerr << "{Type not recognized}";
     }
 }

furvm/src/module.cpp

@@ -54,6 +54,9 @@ std::ostream& mod::serialize(std::ostream& os) const {
             detail::serialize(os, type.value.array.typeId);
             detail::serialize(os, type.value.array.size);
         } break;
+        case mod_type::Slice: {
+            detail::serialize(os, type.value.slice.typeId);
+        } break;
         case mod_type::Import: {
             detail::serialize(os, type.value.imprt.modId);
             detail::serialize(os, type.value.imprt.typeId);
@@ -169,6 +172,11 @@ mod mod::load(std::istream& is) {
             detail::load(is, size);
             mod.emplace_type(id, typeId, size).dispatch();
         } break;
+        case mod_type::Slice: {
+            mod_type_id typeId = 0;
+            detail::load(is, typeId);
+            mod.emplace_type(id, mod_type::Slice, typeId).dispatch();
+        } break;
         case mod_type::Import: {
             std::string modName;
             detail::load(is, modName);