Check for expression compile failures

If the expression doesn't compile, print the errors and throw an
exception to crash the program since there is no point in continuing.

This would be caused by a mistake in the JSON file.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I0f648a32f1a1e5729f96289d59fcea1cea9da91f
2 files changed