The protobuf common.h header currently has a "using std::string;"
statement that pulls std::string into the google::protobuf namespace:
ce66f6047d/src/google/protobuf/stubs/common.h (L195)
I plan to delete that line soon. To keep protobuf-c working, this commit
updates the generator to fully qualify std::string.
Upstream protobuf removed scoped_ptr.h, which provided the scoped_ptr
that we depended on, in commit 67952fab2c766ac5eacc15bb78e5af4039a3d398
(67952fab2c).
This commit converts uses of scoped_ptr type to idiomatic C++11
std::unique_ptr, similar to the changes in the protobuf commit.
This has been tested on protobuf 3.0.0 (the version currently in Debian)
as well as the latest protobuf 3.6.1 release.
The protobuf project removed "using namespace std" namespace pollution
from their stubs/common.h header file. This caused build failures for us
since we relied on their namespace pollution.
This commit updates protobuf-c to convert:
'map' → 'std::map'
'set' → 'std::set'
'back_insert_iterator' → 'std::back_insert_iterator'
The spec talks about "empty string" and other languages like C#
return a zero length string and not null.
This is useful because when moving from proto2's "required string"
to a proto3's plain string we will be guaranteed that we
never get a null pointer.
The tradeoff is adding a special case to the library but avoiding
a lot of null checks in the calling code.
The current code is already special casing "" in pack_string.
This is a first cut at adding proto3 support.
As far as I understand protobuf-c already has pretty much everything
needed once it is built using a new version of protobuf itself.
The only missing thing is that in proto3 all fields are optional and
having to manually set has_foo is inconvenient.
This patch special cases the proto3 syntax files so that structs for the
bytes, enum and primitive fields do not emit the has_ field.
It also adds PROTOBUF_C_LABEL_NONE to the label enum that is used for
proto3 fields. When a fields has this label, the quantifier is not
consulted and instead the field is packed/unpacked depending on
whether it has a value different from NULL/0.
Adds support for the LITE_RUNTIME optimization option to the protobuf-c
compiler. Enabling this option would generate lighter weight message,
enum, and service descriptors that contain NO strings. As a result,
calls to lookup descriptors via the *_get_{field,value,method}_by_name
API will return NULL.
Default compiler behavior (when optimize_for is not specified or is not
set to LITE_RUNTIME) is unchanged.
rename PROTOBUF_C_FIELD_FLAGS_PACKED to PROTOBUF_C_FIELD_FLAG_PACKED.
rename ProtobufCFieldFlagType to ProtobufCFieldFlag.
wrap some particular long lines.
update documentation.
for clarity, use a "uint32_t" instead of "unsigned" for the 'flags'
field in _ProtobufCFieldDescriptor.
per https://code.google.com/p/protobuf/source/detail?r=50, the license
on google-originated protobuf code was switched from Apache-2.0 to
BSD-3-Clause (so-called "New BSD" license). update any of the google
license statements to use this new license.
per email with dave, drop the third clause on his BSD-3-Clause license,
so this now becomes BSD-2-Clause.
make sure to use consistent indentation and wrapping throughout.
