From 2edecdc41a011de00a20fa1f4093701a4989e3d3 Mon Sep 17 00:00:00 2001
From: openhands <openhands@all-hands.dev>
Date: Wed, 18 Mar 2026 13:23:14 +0000
Subject: [PATCH] Add missing type annotations to core CIL classes

---
 dncil/cil/body/flags.py  | 6 +++---
 dncil/cil/instruction.py | 4 ++--
 dncil/cil/opcode.py      | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/dncil/cil/body/flags.py b/dncil/cil/body/flags.py
index 7c9b6a0..18ecf53 100644
--- a/dncil/cil/body/flags.py
+++ b/dncil/cil/body/flags.py
@@ -25,8 +25,8 @@ def __init__(self, flags: int):
         self.InitLocals: bool = bool(flags & CorILMethod.InitLocals)
         self.CompressedIL: bool = bool(flags & CorILMethod.CompressedIL)
 
-    def __str__(self):
-        def _to_print(v):
+    def __str__(self) -> str:
+        def _to_print(v: bool) -> str:
             return "true" if v else "false"
 
         return (
@@ -39,7 +39,7 @@ def _to_print(v):
             + f"CompressedIL :  {_to_print(self.CompressedIL)}\n"
         )
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return str(self)
 
     def is_tiny(self) -> bool:
diff --git a/dncil/cil/instruction.py b/dncil/cil/instruction.py
index fcd6b7d..31c7900 100644
--- a/dncil/cil/instruction.py
+++ b/dncil/cil/instruction.py
@@ -22,7 +22,7 @@
 class Instruction:
     """store managed instruction"""
 
-    def __init__(self):
+    def __init__(self) -> None:
         self.offset: int
         self.opcode: OpCode
         self.opcode_bytes: bytes
@@ -45,7 +45,7 @@ def __int__(self) -> int:
         return self.offset
 
     @property
-    def mnemonic(self):
+    def mnemonic(self) -> str:
         """get instruction opcode mnemonic"""
         return self.opcode.name
 
diff --git a/dncil/cil/opcode.py b/dncil/cil/opcode.py
index 900527f..986c4b8 100644
--- a/dncil/cil/opcode.py
+++ b/dncil/cil/opcode.py
@@ -26,7 +26,7 @@ def __init__(
         op_code_type: OpCodeType,
         stack_push: StackBehaviour,
         stack_pop: StackBehaviour,
-    ):
+    ) -> None:
         self.name: str = name
         self.value: OpCodeValue = value
         self.operand_type: OperandType = operand_type