internal static bool Equals(LambdaExpression?x, LambdaExpression?y)
{
if (ReferenceEquals(x, y))
{
return(true);
}
if (x is null || y is null)
{
return(false);
}
var xMember = x.GetRootProperty();
var yMember = y.GetRootProperty();
while (xMember != null &&
yMember != null)
{
if (!MemberExpressionComparer.Equals(xMember, yMember))
{
return(false);
}
xMember = xMember.GetPreviousProperty();
yMember = yMember.GetPreviousProperty();
}
return(xMember is null && yMember is null &&
x.GetSourceType() == y.GetSourceType());
}
private static int GetHashCode(LambdaExpression obj)
{
var member = obj.GetRootProperty();
unchecked
{
var hash = 19;
do
{
hash = (hash * 397) ^ MemberExpressionComparer.GetHashCode(member);
member = member.GetPreviousProperty();
}while (member != null);
return((hash * 397) ^ obj.GetSourceType().GetHashCode());
}
}
internal static bool Equals(LambdaExpression x, LambdaExpression y)
{
var xMember = x.GetRootProperty();
var yMember = y.GetRootProperty();
while (xMember != null && yMember != null)
{
if (!MemberExpressionComparer.Equals(xMember, yMember))
{
return(false);
}
xMember = xMember.GetPreviousProperty();
yMember = yMember.GetPreviousProperty();
}
return(xMember == null && yMember == null &&
x.GetSourceType() == y.GetSourceType());
}