fAssemblyBufferUsedSize
status_t result = _EnsureAssemblyBufferAllocatedSize(fAssemblyBufferUsedSize + len);
memcpy(&fAssemblyBuffer[fAssemblyBufferUsedSize], str, len);
fAssemblyBufferUsedSize += len;
fAssemblyBufferUsedSize + kMaximumUtf8SequenceLength);
char* insertPtr = &fAssemblyBuffer[fAssemblyBufferUsedSize];
fAssemblyBufferUsedSize += sequenceLength;
size_t fAssemblyBufferUsedSize;
fAssemblyBufferUsedSize = 0;
status_t result = _EnsureAssemblyBufferAllocatedSize(fAssemblyBufferUsedSize + 1);
fAssemblyBuffer[fAssemblyBufferUsedSize] = c;
fAssemblyBufferUsedSize++;