const_byteptr decode_leb128(Uint& result, const_byteptr p, const_byteptr end) {
// TODO: test
Uint x = 0;
for (;;) {
byte const c = *p;
byte const sig = c & 0x7f;
x <<= 7;
x |= sig;
++p;
if (c == sig) {
result = x;
return p;
}
if (p == end) throw leb128error();
}
}
byteptr encode_leb128(byteptr p, byteptr e, Uint x) {
if (leb128_max_bytes(x) + p > e) throw leb128error();
return encode_leb128(p, x);
}
virtual byteptr encode(byteptr p, const_byteptr end, Value const& x) const {
if (max_bytes + p > end) throw leb128error(); /// override this if you want to be more precise
return encode(p, x);
}
byteptr encode(byteptr p, const_byteptr end, Uint x) const {
if (p + fixed_bytes > end) throw leb128error();
return encode(p, x);
}
const_byteptr decode(Uint& x, const_byteptr p, const_byteptr end) const {
if (p + fixed_bytes > end) throw leb128error();
return decode(x, p);
}
static byteptr encode(byteptr p, const_byteptr end, Uint x) {
if (p + sizeof(Uint) > end)
throw leb128error();
*(Uint*)p = x;
return p + sizeof(Uint);
}
static const_byteptr decode(Uint &x, const_byteptr p, const_byteptr end) {
if (p + sizeof(Uint) > end)
throw leb128error();
x = *(Uint*)p;
return p + sizeof(Uint);
}
