add __int__, __hash__, __eq__ methods and missing annotations to Toke…

…n, Local, and Argument classes (#103)

* add __int__, __hash__, __eq__ methods and missing annotations to Token, Local, and Argument classes

* Removal of redundant cast. Lint checked.

dncil/clr/argument.py

@@ -20,3 +20,12 @@ def __str__(self) -> str:
 
     def __repr__(self) -> str:
         return str(self)
+
+    def __int__(self) -> int:
+        return self.index
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, Argument) and self.index == other.index
+
+    def __hash__(self) -> int:
+        return hash(self.index)

dncil/clr/local.py

@@ -20,3 +20,12 @@ def __str__(self) -> str:
 
     def __repr__(self) -> str:
         return str(self)
+
+    def __int__(self) -> int:
+        return self.index
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, Local) and self.index == other.index
+
+    def __hash__(self) -> int:
+        return hash(self.index)

dncil/clr/token.py

@@ -6,49 +6,60 @@
 #  is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and limitations under the License.
 
+from __future__ import annotations
+
 
 class Token(object):
     """store managed token"""
 
-    RID_MASK = 0x00FFFFFF
-    RID_MAX = RID_MASK
-    TABLE_SHIFT = 24
+    RID_MASK: int = 0x00FFFFFF
+    RID_MAX: int = RID_MASK
+    TABLE_SHIFT: int = 24
 
-    def __init__(self, value):
-        self.value = value
+    def __init__(self, value: int):
+        self.value: int = value
 
     @property
-    def rid(self):
+    def rid(self) -> int:
         """get token row index"""
         return self.value & Token.RID_MASK
 
     @property
-    def table(self):
+    def table(self) -> int:
         """get token table index"""
         return self.value >> Token.TABLE_SHIFT
 
-    def __str__(self):
+    def __str__(self) -> str:
         return "token(0x%08X)" % self.value
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return str(self)
 
+    def __int__(self) -> int:
+        return self.value
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, Token) and self.value == other.value
+
+    def __hash__(self) -> int:
+        return hash(self.value)
+
 
 class InvalidToken(Token):
     """store invalid managed token"""
 
-    def __init__(self, value):
+    def __init__(self, value: int):
         super(InvalidToken, self).__init__(value)
 
-    def __str__(self):
+    def __str__(self) -> str:
         return "invalid token(0x%08X)" % self.value
 
 
 class StringToken(Token):
     """store string managed token"""
 
-    def __init__(self, value):
+    def __init__(self, value: int):
         super(StringToken, self).__init__(value)
 
-    def __str__(self):
+    def __str__(self) -> str:
         return "string token(0x%08X)" % self.value