get all enum fields and their possible values

[Tuppy Hamper]

is it possible to dynmically get allthe enum fields associated with a
protocol buffer message and all the valid values defined in that enum
fields?

[Tuppy Hamper]

I am looking for a way to get all the enums defined, not just the ones
that are set.

[Kenton Varda]

using google::protobuf::Descriptor;

using google::protobuf::FieldDescriptor;

using google::protobuf::EnumDescriptor;

using google::protobuf::EnumValueDescriptor;

const Descriptor* descriptor = message.GetDescriptor();

for (int i = 0; i < descriptor->field_count(); i++) {

  const FieldDescriptor* field = descriptor->field(i);

  if (field->type() == FieldDescriptor::TYPE_ENUM) {

    // this is an enum field.

    const EnumDescriptor* type = field->enum_type();

    for (int j = 0; j < type->value_count(); j++) {

      const EnumValueDescriptor* value = type->value(i);

      // value->name() and value->number() describe this value.

[Tuppy Hamper]

and how would this change if the message contained fields that were
repeatable or single messages which contained their own ENUMS. I know
I would have to have a branch to the IF statement that if type ==
MESSAGE, then recurse, but would I have to handle single and repeatble
message fields differently?

Thanks

> > fields?- Hide quoted text -
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[Kenton Varda]

On Fri, Oct 2, 2009 at 1:07 PM, Tuppy Hamper <ham...@gmail.com> wrote:

and how would this change if the message contained fields that were
repeatable or single messages which contained their own ENUMS. I know
I would have to have a branch to the IF statement that if type ==
MESSAGE, then recurse, but would I have to handle single and repeatble
message fields differently?

field->is_repeated() returns true or false.  There's nothing else different about the descriptors (though the resulting messages are obviously pretty different).