move is_valid_address into addresses.py

pokemontools/addresses.py

@@ -0,0 +1,14 @@
+"""
+Common methods used against addresses.
+"""
+
+def is_valid_address(address):
+    """is_valid_rom_address"""
+    if address == None:
+        return False
+    if type(address) == str:
+        address = int(address, 16)
+    if 0 <= address <= 2097152:
+        return True
+    else:
+        return False

pokemontools/crystal.py

@@ -61,6 +61,9 @@ import item_constants
 import wram
 import exceptions
 
+import addresses
+is_valid_address = addresses.is_valid_address
+
 from map_names import map_names
 
 # ---- script_parse_table explanation ----
@@ -142,17 +145,6 @@ def load_asm2(filename="../main.asm"):
     new_asm = Asm(filename=filename)
     return new_asm
 
-def is_valid_address(address):
-    """is_valid_rom_address"""
-    if address == None:
-        return False
-    if type(address) == str:
-        address = int(address, 16)
-    if 0 <= address <= 2097152:
-        return True
-    else:
-        return False
-
 def rom_interval(offset, length, strings=True, debug=True):
     """returns hex values for the rom starting at offset until offset+length"""
     global rom