const void* SkValidatingReadBuffer::skip(size_t size) {
size_t inc = SkAlign4(size);
const void* addr = fReader.peek();
this->validate(IsPtrAlign4(addr) && fReader.isAvailable(inc));
if (!fError) {
fReader.skip(size);
}
return addr;
}
const void* SkReadBuffer::skip(size_t size) {
size_t inc = SkAlign4(size);
this->validate(inc >= size);
const void* addr = fReader.peek();
this->validate(IsPtrAlign4(addr) && fReader.isAvailable(inc));
if (fError) {
return nullptr;
}
fReader.skip(size);
return addr;
}
SkScalar SkValidatingReadBuffer::readScalar() {
const size_t inc = sizeof(SkScalar);
this->validate(IsPtrAlign4(fReader.peek()) && fReader.isAvailable(inc));
return fError ? 0 : fReader.readScalar();
}
int32_t SkValidatingReadBuffer::readInt() {
const size_t inc = sizeof(int32_t);
this->validate(IsPtrAlign4(fReader.peek()) && fReader.isAvailable(inc));
return fError ? 0 : fReader.readInt();
}
void SkValidatingReadBuffer::setMemory(const void* data, size_t size) {
this->validate(IsPtrAlign4(data) && (SkAlign4(size) == size));
if (!fError) {
fReader.setMemory(data, size);
}
}
uint32_t SkValidatingReadBuffer::getArrayCount() {
const size_t inc = sizeof(uint32_t);
fError = fError || !IsPtrAlign4(fReader.peek()) || !fReader.isAvailable(inc);
return fError ? 0 : *(uint32_t*)fReader.peek();
}