refactor: working towards a better astgen patterns

src/Story.zig

@@ -497,11 +497,48 @@ pub fn loadFromString(
         return error.Invalid;
     }
 
-    var story = try AstGen.generate(gpa, &ast);
+    const comp_unit = try AstGen.generate(gpa, &ast);
+    defer comp_unit.deinit(gpa);
+    comp_unit.dumpStringsWithHex();
+
+    var story: Story = .{
+        .allocator = gpa,
+        .can_advance = false,
+        .dump_writer = options.dump_writer,
+    };
     errdefer story.deinit();
 
-    try story.divert("@main@");
-    story.dump_writer = options.dump_writer;
+    for (comp_unit.knots) |compiled_chunk| {
+        const chunk_name = comp_unit.resolveString(compiled_chunk.name_ref);
+        var constant_pool: std.ArrayList(*Object) = .empty;
+        try constant_pool.ensureUnusedCapacity(gpa, compiled_chunk.constants.len);
+        defer constant_pool.deinit(gpa);
+
+        for (comp_unit.resolveConstants(compiled_chunk.constants)) |constant| {
+            switch (constant) {
+                .number => |value| {
+                    const object: *Object.Number = try .create(&story, .{ .integer = value });
+                    constant_pool.appendAssumeCapacity(&object.base);
+                },
+                .string => |ref| {
+                    const bytes = comp_unit.resolveString(ref);
+                    const object: *Object.String = try .create(&story, bytes);
+                    constant_pool.appendAssumeCapacity(&object.base);
+                },
+            }
+        }
+
+        const runtime_chunk: *Object.ContentPath = try .create(&story, .{
+            .name = try .create(&story, chunk_name),
+            .arity = @intCast(compiled_chunk.arity),
+            .locals_count = @intCast(compiled_chunk.stack_size - compiled_chunk.arity),
+            .const_pool = try constant_pool.toOwnedSlice(gpa),
+            .bytes = try gpa.dupe(u8, comp_unit.resolveInstructions(compiled_chunk.instructions)),
+        });
+        try story.paths.append(gpa, &runtime_chunk.base);
+    }
+
+    try story.divert("$__main__$");
     story.can_advance = true;
     return story;
 }