public override CheckTypesResult CheckExprTypeBounds()
{
CheckTypesResult result = new CheckTypesResult();
Exprent param1 = lstOperands[0];
VarType type1 = param1.GetExprType();
Exprent param2 = null;
VarType type2 = null;
if (lstOperands.Count > 1)
{
param2 = lstOperands[1];
type2 = param2.GetExprType();
}
switch (funcType)
{
case Function_Iif:
{
VarType supertype = GetExprType();
result.AddMinTypeExprent(param1, VarType.Vartype_Boolean);
result.AddMinTypeExprent(param2, VarType.GetMinTypeInFamily(supertype.typeFamily)
);
result.AddMinTypeExprent(lstOperands[2], VarType.GetMinTypeInFamily(supertype.typeFamily
));
break;
}
case Function_I2l:
case Function_I2f:
case Function_I2d:
case Function_I2b:
case Function_I2c:
case Function_I2s:
{
result.AddMinTypeExprent(param1, VarType.Vartype_Bytechar);
result.AddMaxTypeExprent(param1, VarType.Vartype_Int);
break;
}
case Function_Imm:
case Function_Ipp:
case Function_Mmi:
case Function_Ppi:
{
result.AddMinTypeExprent(param1, implicitType);
result.AddMaxTypeExprent(param1, implicitType);
break;
}
case Function_Add:
case Function_Sub:
case Function_Mul:
case Function_Div:
case Function_Rem:
case Function_Shl:
case Function_Shr:
case Function_Ushr:
case Function_Lt:
case Function_Ge:
case Function_Gt:
case Function_Le:
{
result.AddMinTypeExprent(param2, VarType.Vartype_Bytechar);
goto case Function_Bit_Not;
}
case Function_Bit_Not:
case Function_Neg:
{
// case FUNCTION_BOOL_NOT:
result.AddMinTypeExprent(param1, VarType.Vartype_Bytechar);
break;
}
case Function_And:
case Function_Or:
case Function_Xor:
case Function_Eq:
case Function_Ne:
{
if (type1.type == ICodeConstants.Type_Boolean)
{
if (type2.IsStrictSuperset(type1))
{
result.AddMinTypeExprent(param1, VarType.Vartype_Bytechar);
}
else
{
// both are booleans
bool param1_false_boolean = type1.IsFalseBoolean() || (param1.type == Exprent.Exprent_Const &&
!((ConstExprent)param1).HasBooleanValue());
bool param2_false_boolean = type1.IsFalseBoolean() || (param2.type == Exprent.Exprent_Const &&
!((ConstExprent)param2).HasBooleanValue());
if (param1_false_boolean || param2_false_boolean)
{
result.AddMinTypeExprent(param1, VarType.Vartype_Bytechar);
result.AddMinTypeExprent(param2, VarType.Vartype_Bytechar);
}
}
}
else if (type2.type == ICodeConstants.Type_Boolean)
{
if (type1.IsStrictSuperset(type2))
{
result.AddMinTypeExprent(param2, VarType.Vartype_Bytechar);
}
}
break;
}
}
return(result);
}