Add more typing hinting

Author: boriel

src/api/__init__.py

@@ -12,3 +12,4 @@
 from src.api import debug  # noqa
 from src.api import errors  # noqa
 from src.api import errmsg  # noqa
+from src.api import symboltable  # noqa

src/api/global_.py

@@ -9,17 +9,22 @@
 #                    the GNU General License
 # ----------------------------------------------------------------------
 
+from typing import Dict
+from typing import Optional
+from typing import Set
+
+import src.api
+
+from .opcodestemps import OpcodesTemps
+from .constants import TYPE
+
 # ----------------------------------------------------------------------
 # Simple global container for internal constants.
 # Internal constants might be architecture dependant. They're set
 # on module init (at __init__.py) on api.arch.<arch>/init.py
 #
 # Don't touch unless you know what are you doing
 # ----------------------------------------------------------------------
-from typing import Dict
-
-from .opcodestemps import OpcodesTemps
-from .constants import TYPE
 
 # ----------------------------------------------------------------------
 # Initializes a singleton container
@@ -73,7 +78,7 @@
 # ----------------------------------------------------------------------
 # Global Symbol Table
 # ----------------------------------------------------------------------
-SYMBOL_TABLE = None  # Must be initialized with SymbolTable()
+SYMBOL_TABLE: Optional['src.api.symboltable.SymbolTable'] = None  # Must be initialized with SymbolTable()
 
 # ----------------------------------------------------------------------
 # Function calls pending to check
@@ -90,7 +95,7 @@
 # ----------------------------------------------------------------------
 # Initialization routines to be called automatically at program start
 # ----------------------------------------------------------------------
-INITS = set([])
+INITS: Set[str] = set([])
 
 # ----------------------------------------------------------------------
 # FUNCTIONS pending to translate after parsing stage
@@ -156,7 +161,7 @@
 # ----------------------------------------------------------------------
 # Cache of Message errors to avoid repetition
 # ----------------------------------------------------------------------
-error_msg_cache = set()
+error_msg_cache: Set[str] = set()
 
 
 # ----------------------------------------------------------------------

src/symbols/number.py

@@ -11,6 +11,8 @@
 
 import numbers
 
+from typing import Optional
+
 from src.api.constants import CLASS
 from .symbol_ import Symbol
 from .type_ import SymbolTYPE
@@ -35,16 +37,15 @@ class SymbolNUMBER(Symbol):
     """ Defines an NUMBER symbol.
     """
 
-    def __init__(self, value, lineno, type_=None):
+    def __init__(self, value, lineno: int, type_: Optional[SymbolTYPE] = None):
         assert lineno is not None
         assert type_ is None or isinstance(type_, SymbolTYPE)
 
         if isinstance(value, SymbolNUMBER):
             value = value.value
 
         assert isinstance(value, numbers.Number)
-
-        super(SymbolNUMBER, self).__init__()
+        super().__init__()
         self.class_ = CLASS.const
 
         if int(value) == value: