No division by 0 in type checks

ogParser.py

@@ -1313,8 +1313,8 @@ def expression(root, context):
                          'Max': str(float(left.Max) - float(right.Max))}
                 expr.exprType = type('Minus', (basic,), attrs)
             elif isinstance(expr, ogAST.ExprDiv):
-                attrs = {'Min': str(float(left.Min) / float(right.Min)),
-                         'Max': str(float(left.Max) / float(right.Max))}
+                attrs = {'Min': str(float(left.Min) / (float(right.Min) or 1)),
+                         'Max': str(float(left.Max) / (float(right.Max) or 1))}
                 expr.exprType = type('Div', (basic,), attrs)
             elif isinstance(expr, (ogAST.ExprMod, ogAST.ExprRem)):
                 attrs = {'Min': right.Min, 'Max': right.Max}

tests/regression/test13/dataview-uniq.asn

 TASTE-Dataview DEFINITIONS ::=
 BEGIN
 
-Int ::= INTEGER(-1000..1000)
+Int ::= INTEGER(0..1000)
 Bool ::= BOOLEAN
-Float ::= REAL (-10000.0..10000.0)
+Float ::= REAL (0..10000.0)
 
 END