tree f60e78ecc2fe7f07ebf653da7d2606b0717b4731
parent 47bbee557961c57f0f17566aa86765a6f218fc5b
author John Kline <jkline@google.com> 1438711248 -0700
committer John Kline <jkline@google.com> 1438711248 -0700

syncbase: syncQL: add Split and Len functions.

Split: splits a string into a list of strings based on a separator.
       Empty separator splits on UTF-8 sequences.
       Just calls string.Split.
       ex: Split("abc.def", ".")

Len: returns the length of a string or the number of entries in
     arrays, lists, maps and sets.
     returns 0 for nil
     returns error (resolves to nil) for all other types
     ex: Len("abc")

In addition to the above, the Type() function collapsed by a couple of lines
and the db argument is now passed into functions (for the context
in creating verrors).

MultiPart: 1/2

Change-Id: Icead1bffbb785334b9015562d611e07c9996c7a5