formats/ctf/metadata/ctf-test/tofix/ctf-path.txt

   1 /* TSDL */
   2 typealias integer { size = 8; align = 8; signed = false; base = hex; } := uint8_t;
   3 typealias integer { size = 32; align = 8; signed = false; base = hex;  } := uint32_t;
   4
   5 trace {
   6     major = 1;
   7     minor = 2;
   8     byte_order = le;
   9     uuid = "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa";
  10     packet.header := struct  {
  11         uint32_t magic;
  12     };
  13 };
  14
  15 variant var {
  16     uint8_t small;
  17     uint32_t big;
  18 };
  19
  20 enum select : uint8_t { small = 0, big = 1 };
  21
  22 stream {
  23     event.header := struct {
  24         enum select a;
  25     };
  26 };
  27
  28 event {
  29     name = event1;
  30     fields := struct {
  31         /*
  32          * TODO: Only an identifier is expected in the variant/sequence
  33          * tag. It should be a dotted expression (a path).
  34          *
  35          */
  36         variant var <stream.event.header.a> b;
  37
  38         /*
  39          * TODO
  40          * The path lookup only allows lookup for a full path starting
  41          * from the root or for a field within the current scope. The
  42          * CTF spec allows defining a relative sub-scope for a preceding
  43          * field.
  44          */
  45         struct {
  46                 enum select sel2;
  47         } str2;
  48         variant var2 <str2.sel2> b;
  49
  50         /*
  51          * TODO: Deal with path name lookup conflict, e.g. if a field is
  52          * named "stream", it conflicts with the stream dynamic scope.
  53          * Local fields hide dynamic scopes.
  54          */
  55         struct {
  56                 enum select sel3
  57         } stream;
  58         variant var3 <stream.sel3> c;
  59         /* But now the following lookup should fail: */
  60         /* variant var4 <stream.event.header.a> d; */
  61
  62         /*
  63          * TODO: support conflict-free local-scoped tags, starting with
  64          * ".".
  65          */
  66         variant var5 <.stream.sel3> e;
  67     };
  68 };