[lldb-dev] one line output for 'print' and 'display'

[David Froger]

Hi Enrico,

Thanks for reply!

So I think I will try to update my lldb.

Thanks,
David

Quoting Enrico Granata (2015-07-10 18:30:44)
> Hi David,
> by default the decision of what types do and do not get “one line” printing is
> hardcoded in FormatManager::ShouldPrintAsOneLiner
> 
> The only setting that users can tweak with regard to that is
> (lldb) settings show auto-one-line-summaries
> auto-one-line-summaries (boolean) = true
> 
> which acts as a global kill-switch for the feature (true means “allow”)
> 
> A quick fix for your problem is to manually add a summary for all int arrays,
> thusly:
> (lldb) type summary add -x "int \[[0-9]+]" -c
> 
> That is saying, for all types whose names match the regular expression int [
> followed by one ore more digits followed by a ], then force one-line formatting
> 
> With that, I get
> (lldb) fr var x
> (int [10]) x = ([0] = 0, [1] = 1, [2] = 2, [3] = 3, [4] = 4, [5] = 5, [6] = 6,
> [7] = 7, [8] = 8, [9] = 9)
> (lldb) expr x
> (int [10]) $2 = ([0] = 0, [1] = 1, [2] = 2, [3] = 3, [4] = 4, [5] = 5, [6] = 6,
> [7] = 7, [8] = 8, [9] = 9)
> 
> With all of that said, I think lldb-300 is a fairly old series. And indeed, on
> a recent LLDB I automatically get the kind of output you would like to see:
> (lldb) expr x
> (int [10]) $0 = ([0] = 0, [1] = 1, [2] = 2, [3] = 3, [4] = 4, [5] = 5, [6] = 6,
> [7] = 7, [8] = 8, [9] = 9)
> 
> even without applying any custom formatting
> 
> 
>     On Jul 9, 2015, at 11:39 PM, David Froger <david.froger.ml at mailoo.org>
>     wrote:
> 
>     Hello,
> 
>     With my LLDB version lldb-300.2.53, printing a array is formatted like
>     this:
> 
>        (int [10]) $0 = {
>          [0] = 0
>          [1] = 1
>          [2] = 2
>          [3] = 3
>          [4] = 4
>          [5] = 5
>          [6] = 6
>          [7] = 7
>          [8] = 8
>          [9] = 9
>        }
> 
>     But I would link a compact printing on one line, like with GDB:
> 
>        $1 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
> 
>     Where I can change this formatting setting?
> 
>     I have the same question for the 'display' command.
> 
>     I already asked the question on stackoverflow:
>        http://stackoverflow.com/q/31328204/744629
> 
>     Thanks for reading!
> 
>     Best regards,
>     David
> 
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> 
> 
> 
> Thanks,
> - Enrico
> 📩 egranata@.com ☎️ 27683
>