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Added support for adding new tables/strings to an existing FlatBuffer.

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As part of the reflection support.

Change-Id: Ie0a8e233bca7dffa4cff7e564660035d97ff8902
Tested: on Linux.
Bug:22637258
This commit is contained in:
Wouter van Oortmerssen
2015-07-29 17:49:02 -07:00
parent 9a30d3d0df
commit 4998ad7365
3 changed files with 109 additions and 22 deletions
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17
include/flatbuffers/flatbuffers.h
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@@ -293,11 +293,21 @@ public:
const_iterator end() const { return const_iterator(Data(), size()); }
// Change elements if you have a non-const pointer to this object.
// Scalars only. See reflection.h, and the documentation.
void Mutate(uoffset_t i, T val) {
assert(i < size());
WriteScalar(data() + i, val);
}
// Change an element of a vector of tables (or strings).
// "val" points to the new table/string, as you can obtain from
// e.g. reflection::AddFlatBuffer().
void MutateOffset(uoffset_t i, const uint8_t *val) {
assert(i < size());
assert(sizeof(T) == sizeof(uoffset_t));
WriteScalar(data() + i, val - (Data() + i * sizeof(uoffset_t)));
}
// The raw data in little endian format. Use with care.
const uint8_t *Data() const {
return reinterpret_cast<const uint8_t *>(&length_ + 1);
@@ -1035,6 +1045,13 @@ class Table {
return true;
}
bool SetPointer(voffset_t field, const uint8_t *val) {
auto field_offset = GetOptionalFieldOffset(field);
if (!field_offset) return false;
WriteScalar(data_ + field_offset, val - (data_ + field_offset));
return true;
}
uint8_t *GetVTable() { return data_ - ReadScalar<soffset_t>(data_); }
bool CheckField(voffset_t field) const {