Details:

- The initialization of CIMProperty and CIMParameter always performs
  a check on the array-related parameters via _check_array_parms().
  However, in case is_array was inferred, it is set consistently
  by _infer_is_array() and there is no point in checking it again.

  This change performs the _check_array_parms() only if is_array
  was not inferred.

  This change leaves the following combination of incorrect input
  parameter undetected: is-array=False and array_size=5. Because
  array_size is ignored and has no meaning when is_array=False,
  not detecting this check seems acceptable.

  The improvement is to avoid the call to _check_array_parms()
  when is_array is inferred.

- An additional improvement was possible due to the first
  change, namely to not perform the check for is-array=False and
  array_size=5 at all, and to eliminate an assertion because
  the way the check function is called already ensures that.

Improvement:

  Output files before: perf/tupleparse/perf_9-infer_*
  Output files after:  perf/tupleparse/perf_10-checkarray_*

Signed-off-by: Andreas Maier <maiera@de.ibm.com>

Details:

- This change optimizes the NocaseDict.__init__() method for the case
  that is by far the most common: No arguments.

  For that case, it reduces the number of if's from 3 if's each with
  len(), to 2 if's for non-emptiness, plus it eliminates a dict update()
  with empty input.

- This change also improves some comments in NocaseDict.__init__().

Improvement:

  Output files before: perf/tupleparse/perf_10-checkarray_*
  Output files after:  perf/tupleparse/perf_11-nocasedict_*

Signed-off-by: Andreas Maier <maiera@de.ibm.com>

Details:

- This change optimizes the implementaiton of NocaseDict._real_key()
  by replacing a check using isinstance() with a check for None,
  turning around the order of checks. Also, replaced if/elif/else
  with a sequence of if's.

  This eliminates a call to isinstance().

Improvement:

  Output files before: perf/tupleparse/perf_11-nocasedict_*
  Output files after:  perf/tupleparse/perf_12-nocasedict_*

Signed-off-by: Andreas Maier <maiera@de.ibm.com>