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More native code gen functionality.

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Allow tables to be mapped to native types directly.  For example, a table
representing a vector3 (eg. table Vec3 { x:float; y:float; z:float; }) can
be mapped to a "mathfu::vec3" native type in NativeTables.  This requires
users to provide Pack and UnPack functions that convert between the
Table and native types.  This is done by adding the "native_type" attribute
to the table definition.

To support user-defined flatbuffers::Pack and flatbuffers::UnPack functions,
support a "native_include" markup that will generate a corresponding

Also add an UnPackTo function which allows users to pass in a pointer to
a NativeTable object into which to UnPack the Table.  The existing UnPack
function is now simply:

  NativeTable* UnPack() {
    NativeTable* obj = new NativeTable();
    Table::UnPackTo(obj);
    return obj;
  }

Finally, allow native types to be given a default value as well which are
set in the NativeTable constructor.  This is done by providing a
"native_default" attribute to the member of a table.

Change-Id: Ic45cb48b0e6d7cfa5734b24819e54aa96d847cfd
This commit is contained in:
Wouter van Oortmerssen
2017-01-18 16:23:35 -08:00
parent 42a265b419
commit 3f936c5655
7 changed files with 318 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
samples/monster_generated.h
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@@ -241,7 +241,8 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
VerifyEquipment(verifier, equipped(), equipped_type()) &&
verifier.EndTable();
}
MonsterT *UnPack(const flatbuffers::resolver_function_t *resolver = nullptr) const;
MonsterT *UnPack(const flatbuffers::resolver_function_t *_resolver = nullptr) const;
void UnPackTo(MonsterT *_o, const flatbuffers::resolver_function_t *_resolver = nullptr) const;
static flatbuffers::Offset<Monster> Pack(flatbuffers::FlatBufferBuilder &_fbb, const MonsterT* _o, const flatbuffers::rehasher_function_t *_rehasher = nullptr);
};
@@ -371,7 +372,8 @@ struct Weapon FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
VerifyField<int16_t>(verifier, VT_DAMAGE) &&
verifier.EndTable();
}
WeaponT *UnPack(const flatbuffers::resolver_function_t *resolver = nullptr) const;
WeaponT *UnPack(const flatbuffers::resolver_function_t *_resolver = nullptr) const;
void UnPackTo(WeaponT *_o, const flatbuffers::resolver_function_t *_resolver = nullptr) const;
static flatbuffers::Offset<Weapon> Pack(flatbuffers::FlatBufferBuilder &_fbb, const WeaponT* _o, const flatbuffers::rehasher_function_t *_rehasher = nullptr);
};
@@ -418,19 +420,24 @@ inline flatbuffers::Offset<Weapon> CreateWeaponDirect(
flatbuffers::Offset<Weapon> CreateWeapon(flatbuffers::FlatBufferBuilder &_fbb, const WeaponT *_o, const flatbuffers::rehasher_function_t *_rehasher = nullptr);
inline MonsterT *Monster::UnPack(const flatbuffers::resolver_function_t *resolver) const {
(void)resolver;
inline MonsterT *Monster::UnPack(const flatbuffers::resolver_function_t *_resolver) const {
auto _o = new MonsterT();
UnPackTo(_o, _resolver);
return _o;
}
inline void Monster::UnPackTo(MonsterT *_o, const flatbuffers::resolver_function_t *_resolver) const {
(void)_o;
(void)_resolver;
{ auto _e = pos(); if (_e) _o->pos = std::unique_ptr<Vec3>(new Vec3(*_e)); };
{ auto _e = mana(); _o->mana = _e; };
{ auto _e = hp(); _o->hp = _e; };
{ auto _e = name(); if (_e) _o->name = _e->str(); };
{ auto _e = inventory(); if (_e) for (flatbuffers::uoffset_t _i = 0; _i < _e->size(); _i++) { _o->inventory.push_back(_e->Get(_i)); } };
{ auto _e = color(); _o->color = _e; };
{ auto _e = weapons(); if (_e) for (flatbuffers::uoffset_t _i = 0; _i < _e->size(); _i++) { _o->weapons.push_back(std::unique_ptr<WeaponT>(_e->Get(_i)->UnPack(resolver))); } };
{ auto _e = weapons(); if (_e) for (flatbuffers::uoffset_t _i = 0; _i < _e->size(); _i++) { _o->weapons.push_back(std::unique_ptr<WeaponT>(_e->Get(_i)->UnPack(_resolver))); } };
{ auto _e = equipped_type(); _o->equipped.type = _e; };
{ auto _e = equipped(); if (_e) _o->equipped.table = EquipmentUnion::UnPack(_e, equipped_type(),resolver); };
return _o;
{ auto _e = equipped(); if (_e) _o->equipped.table = EquipmentUnion::UnPack(_e, equipped_type(),_resolver); };
}
inline flatbuffers::Offset<Monster> Monster::Pack(flatbuffers::FlatBufferBuilder &_fbb, const MonsterT* _o, const flatbuffers::rehasher_function_t *_rehasher) {
@@ -440,25 +447,39 @@ inline flatbuffers::Offset<Monster> Monster::Pack(flatbuffers::FlatBufferBuilder
inline flatbuffers::Offset<Monster> CreateMonster(flatbuffers::FlatBufferBuilder &_fbb, const MonsterT *_o, const flatbuffers::rehasher_function_t *_rehasher) {
(void)_rehasher;
(void)_o;
auto _pos = _o->pos ? _o->pos.get() : 0;
auto _mana = _o->mana;
auto _hp = _o->hp;
auto _name = _o->name.size() ? _fbb.CreateString(_o->name) : 0;
auto _inventory = _o->inventory.size() ? _fbb.CreateVector(_o->inventory) : 0;
auto _color = _o->color;
auto _weapons = _o->weapons.size() ? _fbb.CreateVector<flatbuffers::Offset<Weapon>>(_o->weapons.size(), [&](size_t i) { return CreateWeapon(_fbb, _o->weapons[i].get(), _rehasher); }) : 0;
auto _equipped_type = _o->equipped.type;
auto _equipped = _o->equipped.Pack(_fbb);
return CreateMonster(
_fbb,
_o->pos ? _o->pos.get() : 0,
_o->mana,
_o->hp,
_o->name.size() ? _fbb.CreateString(_o->name) : 0,
_o->inventory.size() ? _fbb.CreateVector(_o->inventory) : 0,
_o->color,
_o->weapons.size() ? _fbb.CreateVector<flatbuffers::Offset<Weapon>>(_o->weapons.size(), [&](size_t i) { return CreateWeapon(_fbb, _o->weapons[i].get(), _rehasher); }) : 0,
_o->equipped.type,
_o->equipped.Pack(_fbb));
_pos,
_mana,
_hp,
_name,
_inventory,
_color,
_weapons,
_equipped_type,
_equipped);
}
inline WeaponT *Weapon::UnPack(const flatbuffers::resolver_function_t *resolver) const {
(void)resolver;
inline WeaponT *Weapon::UnPack(const flatbuffers::resolver_function_t *_resolver) const {
auto _o = new WeaponT();
UnPackTo(_o, _resolver);
return _o;
}
inline void Weapon::UnPackTo(WeaponT *_o, const flatbuffers::resolver_function_t *_resolver) const {
(void)_o;
(void)_resolver;
{ auto _e = name(); if (_e) _o->name = _e->str(); };
{ auto _e = damage(); _o->damage = _e; };
return _o;
}
inline flatbuffers::Offset<Weapon> Weapon::Pack(flatbuffers::FlatBufferBuilder &_fbb, const WeaponT* _o, const flatbuffers::rehasher_function_t *_rehasher) {
@@ -468,10 +489,12 @@ inline flatbuffers::Offset<Weapon> Weapon::Pack(flatbuffers::FlatBufferBuilder &
inline flatbuffers::Offset<Weapon> CreateWeapon(flatbuffers::FlatBufferBuilder &_fbb, const WeaponT *_o, const flatbuffers::rehasher_function_t *_rehasher) {
(void)_rehasher;
(void)_o;
auto _name = _o->name.size() ? _fbb.CreateString(_o->name) : 0;
auto _damage = _o->damage;
return CreateWeapon(
_fbb,
_o->name.size() ? _fbb.CreateString(_o->name) : 0,
_o->damage);
_name,
_damage);
}
inline bool VerifyEquipment(flatbuffers::Verifier &verifier, const void *obj, Equipment type) {