am 0255eb04: am 9827c718: Merge "Fix roundtrip failure with groups when unknown fields are enabled."

* commit '0255eb04c74f86b9bd482d65331d6d8bb4eb3d18':
  Fix roundtrip failure with groups when unknown fields are enabled.

* commit '9827c718c45cfa1744a3b0f8fc27dac9cd415603':
  Fix roundtrip failure with groups when unknown fields are enabled.

When parsing a group, the group's end tag should not be stored within the
message's unknownFieldData. Not only does this waste space, it is also output
the next time the group is serialized, resulting in two end tags for that group.
The resulting bytes are not always a valid protocol buffer and may fail to
parse.

This change ensures that group end tags do not result in an unknownFieldData
entry, and that messages with groups can be roundtripped without corruption.

Change-Id: I240f858a7217a7652b756598c34aacad5dcc3363

Conflicts:
	java/src/test/java/com/google/protobuf/NanoTest.java

* commit '8f93f123e2597ba9c02c2792abe180e63a0d9d5b':
  Implement enum_style=java option.

* commit '3f85c84042611b1f412a73023da8dcd9858037c3':
  Accessor style for optional fields.

* commit '44dc2f1eaead8d95d3f5a4f80f9da87852053bfb':
  Implement enum_style=java option.

* commit '0d035e9b3485d26df106ff9118705d8476466674':
  Accessor style for optional fields.

This javanano_out command line option creates a container interface
at the normal place where the enum constants would reside, per enum
definition. The java_multiple_files flag would now affect the file-
scope enums with the shells. If the flag is true then file-scope
container interfaces are created in their own files.

Change-Id: Id52258fcff8d3dee9db8f3d8022147a811bf3565

* commit '2923f3d2d87c1acd41df5fa741d51c2bbafbd640':
  Add some bitfield helper methods from 2.4

* commit 'cc652daaec7fc6ebf8b12d361444364da257988b':
  Add some bitfield helper methods from 2.4

* commit '081ac0fc81819ad6d124d4133e6d2e4037ca9c5b':
  Add two codegen parameters to nano.

* commit '9e6afdf96f98259f89aad66367954a247b3e7817':
  Add two codegen parameters to nano.

This CL implements the 'optional_field_style=accessors' option.
All optional fields will now be 1 Java field and 1 bit in a shared
bitfield behind get/set/has/clear accessor methods. The setter
performs null check for reference types (Strings and byte[]s).

Also decentralized the clear code generation.

Change-Id: I60ac78329e352e76c2f8139fba1f292383080ad3

Change-Id: Ib9bb549602f71a451d2107fb04de17877553860e

enum_style = c | java: 'c' to put the enum member int constants
at the parent scope; 'java' to create uninstantiatable shell
classes at the parent scope and put the int constants inside.

optional_field_style = default | accessors: 'default' to create
one public mutable field per optional proto field; 'accessors'
to encapsulate the generated fields behind get, set, has and
clear accessors.

This CL only contains parsing code for these two parameters.

Change-Id: Iec0c3b0f30af8eb7db328e790664306bc90be089

* commit '7632e0ad04851ea5524a9f52504e7dcdbc00c514':
  Add a Gradle build file for the protobuf libraries.

* commit '11c3b27d':
  Add a Gradle build file for the protobuf libraries.

Change-Id: Id785093c51eb423576292994a98d42efbbc3fddb

am 48ee66d2: am ece98e5f: Merge "Fix checkbuild targets, remove unittest_enum_mulitplejava_nano.proto."

* commit '48ee66d295979372ed0234cefda42385daae8312':

* commit 'a38aedb3fff651a4e1921162d88df3e1c75726b3':

* commit 'ece98e5f6728a937c8d32d342f3b1b037a611f3e':
  Fix checkbuild targets, remove unittest_enum_mulitplejava_nano.proto.

* commit 'e7b778b99f607460ed9ea88a13ec91164cda8537':
  Fix outer classname for javamicro/javanano.

* commit 'ece98e5f6728a937c8d32d342f3b1b037a611f3e':
  Fix checkbuild targets, remove unittest_enum_mulitplejava_nano.proto.

* commit 'e7b778b99f607460ed9ea88a13ec91164cda8537':
  Fix outer classname for javamicro/javanano.

Change-Id: I2dad2fd9f6c3d419fa77cf8162cd1ee49f74cc5d

- File class name is defined as the java_outer_classname option value
  or the file name ToCamelCase; never the single message's ClassName.
- File-scope enums are translated to constants in the file class,
  regardless of java_multiple_files.
- If java_multiple_files=true, and file's class name equals a message's
  class name, no error. This is done by detecting that the outer class
  is not needed and skipping the outer class codegen and clash checks.
  Note: there is a disparity between java[lite] and the previous
  java{micr|nan}o: when generating code for a single-message proto, the
  outer class is omitted by java{micr|nan}o if the file does not have
  java_outer_classname. This change makes java{micr|nan}o align with
  java[lite] codegen and create the outer class, but will print some
  info to warn of potential change of code.
- Also fixed the "is_own_file" detection and made all parseX() methods
  static. Previously, all messages in a java_multiple_files=true file
  are (incorrectly) considered to be in their own files, including
  nested messages, causing them to become inner classes (instance-
  bound) and forcing the parseX() methods to lose the static modifier.
- This change supersedes c/60164 and c/60086, which causes javanano to
  put enum values into enum shell classes if java_multiple_files=true.
  We now always use the parent class to host the enum values. A future
  change will add a command line option to provide more flexibility.
- Elaborated in java/README.txt.

Change-Id: I684932f90e0a028ef37c662b221def5ffa202439

* commit '87c8e31b8c0baa78f979863a9ed10654a1cdca1f':
  Fixed packed repeated serialization.

Remove buggy memoization. Memoization also is too fragile for the api
because the repeated field is public.

Change-Id: I538b8426d274b22df2eeea5935023abbe7df49fe

* commit 'be47f55e2f93df84abb55759e49cf381d2745cc5':
  Add an option to inspect "has" state upon parse.

If has is set, also always serialize.

Change-Id: I2c8450f7ab9e837d722123dd1042991c0258ede3

* commit '021f8f1badf1c4db519e3f35d600dec4b5c52eff':
  Add test for passing in proto params.