public static Expression GenerateNotEqual(Expression left, Expression right)
{
OptimizeForEqualityIfPossible(ref left, ref right);
ConstantExpressionWrapper.Wrap(ref left);
ConstantExpressionWrapper.Wrap(ref right);
return(Expression.NotEqual(left, right));
}
public static Expression GenerateLessThanEqual(Expression left, Expression right)
{
if (left.Type == typeof(string))
{
return(Expression.LessThanOrEqual(GenerateStaticMethodCall("Compare", left, right), Expression.Constant(0)));
}
if (left.Type.GetTypeInfo().IsEnum || right.Type.GetTypeInfo().IsEnum)
{
return(Expression.LessThanOrEqual(left.Type.GetTypeInfo().IsEnum ? Expression.Convert(left, Enum.GetUnderlyingType(left.Type)) : left,
right.Type.GetTypeInfo().IsEnum ? Expression.Convert(right, Enum.GetUnderlyingType(right.Type)) : right));
}
ConstantExpressionWrapper.Wrap(ref left);
ConstantExpressionWrapper.Wrap(ref right);
return(Expression.LessThanOrEqual(left, right));
}
public static Expression GenerateGreaterThan(Expression left, Expression right)
{
if (left.Type == typeof(string))
{
return(Expression.GreaterThan(GenerateStaticMethodCall("Compare", left, right), Expression.Constant(0)));
}
if (left.Type.GetTypeInfo().IsEnum || right.Type.GetTypeInfo().IsEnum)
{
var leftPart = left.Type.GetTypeInfo().IsEnum ? Expression.Convert(left, Enum.GetUnderlyingType(left.Type)) : left;
var rightPart = right.Type.GetTypeInfo().IsEnum ? Expression.Convert(right, Enum.GetUnderlyingType(right.Type)) : right;
return(Expression.GreaterThan(leftPart, rightPart));
}
ConstantExpressionWrapper.Wrap(ref left);
ConstantExpressionWrapper.Wrap(ref right);
return(Expression.GreaterThan(left, right));
}