formatting private const identifier = value

[dummzeuch 1612]

How do you think the following should be formatted?

1. Like this:

type
  TClass = class(TObject)
  private
    FSomeField: integer;
  private const SomeConstant = 5;
  end;

2. Like this:

type
  TClass = class(TObject)
  private
    FSomeField: integer;
    private const SomeConstant = 5;
  end;

Note: This is only about code where the 'private const SomeConstant = 5;' is in one line without a line feed in between.

 

And what about the following:

1. Like this:

type
  TClass = class(TObject)
  private
    FSomeField: integer;
  private const SomeConstant = 5;
    FSomeOtherField: string;
  end;

2. Like this:

type
  TClass = class(TObject)
  private
    FSomeField: integer;
    private const SomeConstant = 5;
    FSomeOtherField: string;
  end;

Note: This is only about code where the 'private const SomeConstant = 5;' is in one line without a line feed in between.

[Uwe Raabe 2129]

Are you aware that your second example won't compile? It needs an additional var keyword between the constant declaration and the following field declaration.

[Anders Melander 1951]

type
  TClass = class(TObject)
  private
    FSomeField: integer;
  private const 
    SomeConstant = 5;
  private type
    SomeType = integer;
  private class var
    SomeClassVar: integer;
  end;

etc. etc.

[dummzeuch 1612]

1 hour ago, Uwe Raabe said:

Are you aware that your second example won't compile? It needs an additional var keyword between the constant declaration and the following field declaration.

No, I missed that one.

 

This is a contrived example not real code, personally I always put a line feed after the visibility modifier and rather than using var I start a new visibility section.

[Darian Miller 381]

57 minutes ago, Anders Melander said:

type
  TClass = class(TObject)
  private
    FSomeField: integer;
  private const 
    SomeConstant = 5;
  private type
    SomeType = integer;
  private class var
    SomeClassVar: integer;
  end;

etc. etc.

 

My preference would be similar, but I'd start with private const and end with private fields.

 

 

[dummzeuch 1612]

Just to be clear: I'm not asking whether you like the 'private const bla=blub;' in one line syntax, but how it should be indented:

 

1. like 'private' on its own line -> same indentation as the class/record

2. like other constants / fields / types -> one indentation more than the class/record

 

I assume that most (including myself) would like to split that line (whether between 'private' and 'const' or between 'const' and the identifier would be yet another point for debate.

[Anders Melander 1951]

16 hours ago, Darian Miller said:

I'd start with private const and end with private fields.

Me too - and I would most often also start with the class vars and types. Of course it depends on the size and structure of the class; For a large class I would probably try to keep associated stuff close together as an overriding principle.

[EugeneK 23]

I think more consistent with Embarcadero style will be following, since there could be multiple consts/types/vars

 

  TClass = class(TObject)
  private
    FSomeField: integer;
  private
    const
      SomeConstant = 5;
      SomeOtherConstant = 6;
  private
    type
      SomeType = integer;
      SomeOtheType = string;
  private
    class var
      SomeClassVar: integer;
      SomeOtherClassVar: string;
  end;

 

[DelphiUdIT 218]

I will write in that way, I mean that I add identation for everything is inside the class definition.

I find it very comprensive simple to view, with very long definition too.

 

But surely it is 'cause I'm old ...

 

type
  TClass = class(TObject)
    private
      const
        SomeConstant = 5;
        SomeOtherConstant = 6;
    private
      type
        SomeType = integer;
        SomeOtheType = string;
    private
      class var SomeClassVar: integer;
      class var SomeOtherClassVar: string;
    private
      FSomeField: integer;
  end;

 

 

[Zane 3]

7 hours ago, EugeneK said:

I think more consistent with Embarcadero style will be following, since there could be multiple consts/types/vars

 

  TClass = class(TObject)
  private
    FSomeField: integer;
  private
    const
      SomeConstant = 5;
      SomeOtherConstant = 6;
  private
    type
      SomeType = integer;
      SomeOtheType = string;
  private
    class var
      SomeClassVar: integer;
      SomeOtherClassVar: string;
  end;

 

This is the style that pasfmt uses. It's most consistent to break after every visibility specifier because it does start a new section, and there may not be a visibility specifier before the next section:

type
  TClass = class(TObject)
  private
    const
      SomeConstant = 5;
    type
      SomeType = integer;
  end;