public override object Eval(object row, object context)
{
object lValue = base.Left.Eval(row, context);
if (!DataStorageHelper.IsObjectNull(lValue))
{
if (!(lValue is string || lValue is SqlString))
{
throw InvalidExpressionException.TypeMismatchInBinop(Operator.Like, lValue.GetType(), typeof(string));
}
object rValue = base.Right.Eval(row, context);
if (DataStorageHelper.IsObjectNull(rValue))
{
return(DBNull.Value);
}
if (!(rValue is string || rValue is SqlString))
{
throw InvalidExpressionException.TypeMismatchInBinop(Operator.Like, typeof(string), rValue.GetType());
}
string text = lValue.ToString();
string pattern = this.AnalizePattern(rValue.ToString());
char[] trimChars = new char[] { ' ', '\u3000' };
text = text.TrimEnd(trimChars);
CompareInfo compareInfo = base.Culture.CompareInfo;
switch (this.kind)
{
case match_left:
return(0 == compareInfo.IndexOf(text, pattern, this.compareFlags));
case match_right:
{
string text4 = pattern.TrimEnd(trimChars);
return(compareInfo.IsSuffix(text, text4, this.compareFlags));
}
case match_middle:
return(0 <= compareInfo.IndexOf(text, pattern, this.compareFlags));
case match_exact:
return(0 == compareInfo.Compare(text, pattern, this.compareFlags));
case match_all:
return(true);
}
}
return(DBNull.Value);
}
public override object Eval(object row, object context)
{
object obj1 = this.Left.Eval(row, context);
if (!DataStorageHelper.IsObjectNull(obj1))
{
if (!(obj1 is string) && !(obj1 is SqlString))
{
Guid guid = obj1 as Guid;
}
object obj2 = this.Right.Eval(row, context);
if (DataStorageHelper.IsObjectNull(obj2))
{
return((object)DBNull.Value);
}
if (!(obj2 is string) && !(obj2 is SqlString) && !(obj1 is Guid))
{
throw InvalidExpressionException.TypeMismatchInBinop(Operator.Like, typeof(string), obj2.GetType());
}
string str = obj1.ToString();
string string2 = this.AnalizePattern(obj2.ToString());
char[] chArray = new char[2] {
' ', ' '
};
CompareInfo compareInfo = this.Culture.CompareInfo;
switch (this.kind)
{
case 1:
return((object)(0 == compareInfo.IndexOf(str, string2, this.compareFlags)));
case 2:
string suffix = string2.TrimEnd(chArray);
return((object)compareInfo.IsSuffix(str, suffix, this.compareFlags));
case 3:
return((object)(0 <= compareInfo.IndexOf(str, string2, this.compareFlags)));
case 4:
return((object)(0 == compareInfo.Compare(str, string2, this.compareFlags)));
case 5:
return((object)true);
}
}
return((object)DBNull.Value);
}
