c# - Why are these functionally equivalent methods not discovered by VS2013's "Analyze Solution for Code Clones"? -

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i select "analyze > analyze solution code clones" in vs2013 rc, expecting realize these 2 methods:

private static char getbarcodechecksumwithlegacycode(string barcodewithoutczechsum) {     contract.requires(!string.isnullorwhitespace(barcodewithoutczechsum));      if (barcodewithoutczechsum.length > 6)     {         int = 0;         int b = 0;         int j = barcodewithoutczechsum.length - 1;         int = j;         while (i >= 0)         {             = + barcodewithoutczechsum[i] - 48;             = - 2;         }          j = barcodewithoutczechsum.length - 2;         = j;         while (i >= 0)         {             b = b + barcodewithoutczechsum[i] - 48;             = - 2;         }         = 3 * + b;         b = % 10;         if (b != 0) b = 10 - b;          var ch = (char)(48 + b);         return ch;     }     return ' '; }  public static string getbarcodechecksum(string barcode) {     int oddtotal;     int oddtotaltripled;     int eventotal;     // positions odd or depend on length of barcode,      // or more specifically, whether length odd or even, so:     if (isstringofevenlen(barcode))     {         oddtotal = suminsideordinals(barcode);         oddtotaltripled = oddtotal * 3;         eventotal = sumoutsideordinals(barcode);     }     else     {         oddtotal = sumoutsideordinals(barcode);         oddtotaltripled = oddtotal * 3;         eventotal = suminsideordinals(barcode);     }     int finaltotal = oddtotaltripled + eventotal;     int modval = finaltotal % 10;     int czechsum = 10 - modval;     if (czechsum == 10)     {         return "0";     }     return czechsum.tostring(); }

...are functionally equivalent. first cryptic, second (to me, perhaps because it's 1 wrote) plain. tool doesn't see them being "code clones," though.

is because method calls other methods, namely isstringofevenlen(), suminsideordinals(), , sumoutsideordinals()?


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