This patch makes erlware_commons easier to include as a dependency by
removing depedencies that are not needed at run time.
The top-level Makefile creates a .DEV_MODE marker file which is
detected by rebar.config.script. When the marker file is present, the
development only dependencies proper and neotoma are included and a
macro 'DEV_ONLY' is defined. The macro is used to only enable the
proper tests for development mode.
The ec_semver_parser.peg is now located in priv/ and is moved into
src/ by the Makefile. The generated ec_semver_parser.erl is now under
version control; it need not be rebuilt by all projects wishing to
include erlware_commons. It will be rebuilt, as before this change, on
every make invocation.
This started with just trying to parse the date format:
December 21st, 2013 7:00pm, which was failing with a bad_date error.
The solution involved setting up "Hinted Months", which was just a term
I used to indicate that a month was specified by name (ie "December"),
rather than by number (ie, "12"). Previously, named months were simply
replaced by their respective numbers in the parser. This tags those
named months so that the parser will unambiguously parse them correctly.
A tagged "Hinted Month" is simply a tuple with the tag `?MONTH_TAG`. For
example: "December" gets converted to `{?MONTH_TAG, 12}`
For example: "Aug 12" and "12 Aug". It's clear to the *reader* what is
meant, but when converted to simply 8 and 12, the parser has no way of
knowing which is which.
Doing this was aided with the addition of some macros to help it
along, since doing just straight comparisons with the hinted months was
yielding unexpected results. For example: `{mon, 1} > 31` returns
true, so changing that comparison to an ?is_year/1 macro that does:
`is_integer(Y) andalso Y > 31`.
It might not be a bad idea to help the parser be *very* unambiguous by
putting these macros on all comparisons.
Signed-off-by: Jordan Wilberding <diginux@gmail.com>
This allows for two things. The first is support for non rigorous
versions. However, it still fully supports semver. So if you have
semver versions they work correctly, if you have alpha versions they
also work correctly but using natural alpha ordering.
Signed-off-by: Jordan Wilberding <diginux@gmail.com>
The OTP Versions distributed with erlang tend to have four version
numbers not three. This is a fairly minor deviation from semver that
we can support. Basically, the semver parser treats the fourth version
in exactly the same way as the other three.
Signed-off-by: Jordan Wilberding <diginux@gmail.com>
In an attempt to unify on the accepted use of return values ec_file is
changing its API to use return values instead of exceptions.
Signed-off-by: Jordan Wilberding <diginux@gmail.com>
