[swift-users] Proper syntax for 2D table with initial values

[Ken Burgett]

I have a large 2D table defined within a C .h file, as follows:

static const uint8_t blake2b_kat[256][64] =
{
   {
     0x78, 0x6A, 0x02, 0xF7, 0x42, 0x01, 0x59, 0x03,
     0xC6, 0xC6, 0xFD, 0x85, 0x25, 0x52, 0xD2, 0x72,
     0x91, 0x2F, 0x47, 0x40, 0xE1, 0x58, 0x47, 0x61,
     0x8A, 0x86, 0xE2, 0x17, 0xF7, 0x1F, 0x54, 0x19,
     0xD2, 0x5E, 0x10, 0x31, 0xAF, 0xEE, 0x58, 0x53,
     0x13, 0x89, 0x64, 0x44, 0x93, 0x4E, 0xB0, 0x4B,
     0x90, 0x3A, 0x68, 0x5B, 0x14, 0x48, 0xB7, 0x55,
     0xD5, 0x6F, 0x70, 0x1A, 0xFE, 0x9B, 0xE2, 0xCE
   }
    ... shortened for clarity ...
}
There are 16384	elements in this array.  The C compiler accepts it with 
no difficulty

I converted it to a .swift file like so:

let blake2b_kat: [[UInt8]] =
[
  [
   0x78, 0x6A, 0x02, 0xF7, 0x42, 0x01, 0x59, 0x03,
   0xC6, 0xC6, 0xFD, 0x85, 0x25, 0x52, 0xD2, 0x72,
   0x91, 0x2F, 0x47, 0x40, 0xE1, 0x58, 0x47, 0x61,
   0x8A, 0x86, 0xE2, 0x17, 0xF7, 0x1F, 0x54, 0x19,
   0xD2, 0x5E, 0x10, 0x31, 0xAF, 0xEE, 0x58, 0x53,
   0x13, 0x89, 0x64, 0x44, 0x93, 0x4E, 0xB0, 0x4B,
   0x90, 0x3A, 0x68, 0x5B, 0x14, 0x48, 0xB7, 0x55,
   0xD5, 0x6F, 0x70, 0x1A, 0xFE, 0x9B, 0xE2, 0xCE
  ]
...
]

When I attempt a swift compile, the compiler seems to go away and never 
return.  I tried the same test with the REPL and saw all the text list 
(2600 lines), but then the same thing happened.  I left the REPL running 
for 10 minutes or so, with no output. I have tried the same swift table 
definition with fewer rows and columns, and it produces the correct 2D 
array.

My question is whether this is just an issue with the current Swift 
compiler (I am using the May 9th version for Ubuntu 14.04) or is this a 
recognized limitation in scale?  In order to get my 2D table filled and 
work around this issue, I will have to read the file with file I/O and 
do my own parsing.
-- 
Ken Burgett
Principal Software Engineer
Email: kenb at iotone.io
Office: 530.693.4449
Mobile: 831.332.6846
URL: www.iotone.co