From af5672020ef19b96353c31280355345bad9f57e1 Mon Sep 17 00:00:00 2001
From: z78078 <cc@m-labs.hk>
Date: Fri, 22 Jul 2022 10:41:23 +0800
Subject: [PATCH] nac3artiq: insert the constructor type to HashMap
 'pyid_to_type' if class possess an __init__ method

---
 nac3artiq/src/symbol_resolver.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/nac3artiq/src/symbol_resolver.rs b/nac3artiq/src/symbol_resolver.rs
index 434a724f..8981cc3b 100644
--- a/nac3artiq/src/symbol_resolver.rs
+++ b/nac3artiq/src/symbol_resolver.rs
@@ -545,6 +545,32 @@ impl InnerResolver {
         if let Some(ty) = self.pyid_to_type.read().get(&py_obj_id) {
             return Ok(Ok(*ty))
         }
+
+        // check if constructor function exists in the methods list
+        let pyid_to_def = self.pyid_to_def.read();
+        let constructor_ty = pyid_to_def
+            .get(&py_obj_id)
+            .and_then(|def_id| {
+                defs.iter()
+                    .find_map(|def| {
+                        if let TopLevelDef::Class {
+                            object_id, methods, constructor, ..
+                        } = &*def.read() {
+                            if object_id == def_id
+                            || !constructor.is_none()
+                            || methods.iter().any(|(s, _, _)| s == &"__init__".into()) {
+                                return constructor.clone();
+                            }
+                        }
+                        None
+                    })
+            });
+
+        if let Some(ty) = constructor_ty {
+            self.pyid_to_type.write().insert(py_obj_id, ty);
+            return Ok(Ok(ty))
+        }
+
         let (extracted_ty, inst_check) = match self.get_pyty_obj_type(
             py,
             {