This is the second attempt to fix our Git history. This should allow
"git blame" to work correctly in the upb/ directory even though our
automation unexpectedly blew away that directory.
* Put oneofs in the same table as fields.
Oneofs and fields are not allowed to have names that conflict,
so we might as well put them all in the same table. This also
allows an efficient operation that looks for both fields and
oneofs in a single lookup.
Added support for OneofDef to Lua to allow testing of this.
* Addressed PR comments.
This change has several parts:
1. Resurrected tools/upbc. The code was all there but the build was
broken for open-source. Now you can type "make tools/upbc" and
it will build all necessary Lua modules and create a robust shell
script for running upbc.
2. Changed Lua module loading to no longer rely on OS-level .so
dependencies. The net effect of this is that you now only need
to set LUA_PATH and LUA_CPATH; setting LD_LIBRARY_PATH or rpaths
is no longer required. Downside: this drops compatibility with
Lua 5.1, since it depends on a feature that only exists in Lua >=5.2
(and LuaJIT).
3. Since upbc works again, I fixed the re-generation of the descriptor
files (descriptor.upb.h, descriptor.upb.c). "make genfiles" will
re-generate these as well as the JIT code generator.
4. Added a Travis test target that ensures that the checked-in generated
files are not out of date. I would do this for the Ragel generated
file also, but we can't count on all versions of Ragel to necessarily
generate identical output.
5. Changed Makefile to no longer automatically run Ragel to regenerate
the JSON parser. This is unfortuante, because it's convenient when
you're developing the JSON parser. However, "git clone" sometimes
skews the timestamps a little bit so that "make" thinks it needs to
regenerate these files for a fresh "git clone." This would normally
be harmless, but if the user doesn't have Ragel installed, it makes
the build fail completely. So now you have to explicitly regenerate
the Ragel output. If you want to you can uncomment the auto-generation
during development.
Adam Cozzette
Protobuf Team Bot
Eric Salo
Joshua Haberman