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Added helper methods to access struct through reflection. (#4120)

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* Added helper methods to access struct through reflection. Also added unit test for it.

* Added a TODO comment to check for the is_struct flag.
This commit is contained in:
Zarian Waheed
2016-12-21 17:48:21 -08:00
committed by Wouter van Oortmerssen
parent b9efbf6a3d
commit 84033ae035
2 changed files with 30 additions and 0 deletions
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16
include/flatbuffers/reflection.h
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@@ -105,6 +105,22 @@ inline Table *GetFieldT(const Table &table,
return table.GetPointer<Table *>(field.offset());
}
// Get a field, if you know it's a struct.
inline const Struct *GetFieldStruct(const Table &table,
const reflection::Field &field) {
// TODO: This does NOT check if the field is a table or struct, but we'd need
// access to the schema to check the is_struct flag.
assert(field.type()->base_type() == reflection::Obj);
return table.GetStruct<const Struct *>(field.offset());
}
// Get a structure's field, if you know it's a struct.
inline const Struct *GetFieldStruct(const Struct &structure,
const reflection::Field &field) {
assert(field.type()->base_type() == reflection::Obj);
return structure.GetStruct<const Struct *>(field.offset());
}
// Raw helper functions used below: get any value in memory as a 64bit int, a
// double or a string.
// All scalars get static_cast to an int64_t, strings use strtoull, every other