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C++ generated code now has constants for vtable offsets.

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Besides making the generated code looking a lot more readable,
it also allows you to use these offsets in calls to
Table::CheckField, to see if a field is present in a table.

Change-Id: I1b4cc350c4f27c4e474c31add40c701ef4ae63b2
Tested: On Linux.
This commit is contained in:
Wouter van Oortmerssen
2015-11-30 14:27:47 -08:00
parent 6d1ff8a525
commit 1fa803d187
3 changed files with 203 additions and 142 deletions
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56
samples/monster_generated.h
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@@ -59,28 +59,36 @@ MANUALLY_ALIGNED_STRUCT(4) Vec3 FLATBUFFERS_FINAL_CLASS {
STRUCT_END(Vec3, 12);
struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
const Vec3 *pos() const { return GetStruct<const Vec3 *>(4); }
Vec3 *mutable_pos() { return GetStruct<Vec3 *>(4); }
int16_t mana() const { return GetField<int16_t>(6, 150); }
bool mutate_mana(int16_t _mana) { return SetField(6, _mana); }
int16_t hp() const { return GetField<int16_t>(8, 100); }
bool mutate_hp(int16_t _hp) { return SetField(8, _hp); }
const flatbuffers::String *name() const { return GetPointer<const flatbuffers::String *>(10); }
flatbuffers::String *mutable_name() { return GetPointer<flatbuffers::String *>(10); }
const flatbuffers::Vector<uint8_t> *inventory() const { return GetPointer<const flatbuffers::Vector<uint8_t> *>(14); }
flatbuffers::Vector<uint8_t> *mutable_inventory() { return GetPointer<flatbuffers::Vector<uint8_t> *>(14); }
Color color() const { return static_cast<Color>(GetField<int8_t>(16, 2)); }
bool mutate_color(Color _color) { return SetField(16, static_cast<int8_t>(_color)); }
enum {
VT_POS = 4,
VT_MANA = 6,
VT_HP = 8,
VT_NAME = 10,
VT_INVENTORY = 14,
VT_COLOR = 16,
};
const Vec3 *pos() const { return GetStruct<const Vec3 *>(VT_POS); }
Vec3 *mutable_pos() { return GetStruct<Vec3 *>(VT_POS); }
int16_t mana() const { return GetField<int16_t>(VT_MANA, 150); }
bool mutate_mana(int16_t _mana) { return SetField(VT_MANA, _mana); }
int16_t hp() const { return GetField<int16_t>(VT_HP, 100); }
bool mutate_hp(int16_t _hp) { return SetField(VT_HP, _hp); }
const flatbuffers::String *name() const { return GetPointer<const flatbuffers::String *>(VT_NAME); }
flatbuffers::String *mutable_name() { return GetPointer<flatbuffers::String *>(VT_NAME); }
const flatbuffers::Vector<uint8_t> *inventory() const { return GetPointer<const flatbuffers::Vector<uint8_t> *>(VT_INVENTORY); }
flatbuffers::Vector<uint8_t> *mutable_inventory() { return GetPointer<flatbuffers::Vector<uint8_t> *>(VT_INVENTORY); }
Color color() const { return static_cast<Color>(GetField<int8_t>(VT_COLOR, 2)); }
bool mutate_color(Color _color) { return SetField(VT_COLOR, static_cast<int8_t>(_color)); }
bool Verify(flatbuffers::Verifier &verifier) const {
return VerifyTableStart(verifier) &&
VerifyField<Vec3>(verifier, 4 /* pos */) &&
VerifyField<int16_t>(verifier, 6 /* mana */) &&
VerifyField<int16_t>(verifier, 8 /* hp */) &&
VerifyField<flatbuffers::uoffset_t>(verifier, 10 /* name */) &&
VerifyField<Vec3>(verifier, VT_POS) &&
VerifyField<int16_t>(verifier, VT_MANA) &&
VerifyField<int16_t>(verifier, VT_HP) &&
VerifyField<flatbuffers::uoffset_t>(verifier, VT_NAME) &&
verifier.Verify(name()) &&
VerifyField<flatbuffers::uoffset_t>(verifier, 14 /* inventory */) &&
VerifyField<flatbuffers::uoffset_t>(verifier, VT_INVENTORY) &&
verifier.Verify(inventory()) &&
VerifyField<int8_t>(verifier, 16 /* color */) &&
VerifyField<int8_t>(verifier, VT_COLOR) &&
verifier.EndTable();
}
};
@@ -88,12 +96,12 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
struct MonsterBuilder {
flatbuffers::FlatBufferBuilder &fbb_;
flatbuffers::uoffset_t start_;
void add_pos(const Vec3 *pos) { fbb_.AddStruct(4, pos); }
void add_mana(int16_t mana) { fbb_.AddElement<int16_t>(6, mana, 150); }
void add_hp(int16_t hp) { fbb_.AddElement<int16_t>(8, hp, 100); }
void add_name(flatbuffers::Offset<flatbuffers::String> name) { fbb_.AddOffset(10, name); }
void add_inventory(flatbuffers::Offset<flatbuffers::Vector<uint8_t>> inventory) { fbb_.AddOffset(14, inventory); }
void add_color(Color color) { fbb_.AddElement<int8_t>(16, static_cast<int8_t>(color), 2); }
void add_pos(const Vec3 *pos) { fbb_.AddStruct(Monster::VT_POS, pos); }
void add_mana(int16_t mana) { fbb_.AddElement<int16_t>(Monster::VT_MANA, mana, 150); }
void add_hp(int16_t hp) { fbb_.AddElement<int16_t>(Monster::VT_HP, hp, 100); }
void add_name(flatbuffers::Offset<flatbuffers::String> name) { fbb_.AddOffset(Monster::VT_NAME, name); }
void add_inventory(flatbuffers::Offset<flatbuffers::Vector<uint8_t>> inventory) { fbb_.AddOffset(Monster::VT_INVENTORY, inventory); }
void add_color(Color color) { fbb_.AddElement<int8_t>(Monster::VT_COLOR, static_cast<int8_t>(color), 2); }
MonsterBuilder(flatbuffers::FlatBufferBuilder &_fbb) : fbb_(_fbb) { start_ = fbb_.StartTable(); }
MonsterBuilder &operator=(const MonsterBuilder &);
flatbuffers::Offset<Monster> Finish() {