Syntax error in a case statement when not expected.

[Dany]

Hi,
I encountered something odd using a case statement with constants as case identifiers.

Additional info from yo2lio: The same problems occur when using variables as case identifiers, see post below.

This are my constants:

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Const   // Modes
      Off_   = 0;
      On_    = 1;
      One_Hr = 2;
      Two_Hr = 3;
      For_Hr = 4;
      Eit_Hr = 5;

This is OK:

Code: Select all

      Case Mode of
        Off_: //
           begin
             ...
           end;
        ...

and this gives an error (Syntax error: expected expression, but label found):

Code: Select all

     Case Mode of
        Off_:
           begin
             ...
           end;
        ...

In general, if anything (comment, the "begin")... is present on the same line after the case identifier, then it is Ok, if nothing is present the compiler give the error.

The problem does not show when using literals in the code in stead of contstants, so this is OK:

Code: Select all

     Case Mode of
        0:
           begin
             ...
           end;
        ...

Of course the work around is very easy here.

[yo2lio]

I encountered something odd using a case statement with constants as case identifiers.

Same for this :

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var i : byte;
    
begin
  case i of
    i:
      begin

      end;
  end;
end.

[janni]

These are old quirks and there are more of them (for example, semicolon is supposed to be used for comments in assembly block - try to use keywords, like end, in the comment, or a quote char ' - the compiler will report errors).

Unfortunately, all these quirks continue to exist and even permeated the new IDE (and command line compiler), which in future is going to replace the present one .