You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
3.1 KiB
72 lines
3.1 KiB
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
cpp-ethereum is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** @file ABI.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libdevcore/Common.h>
|
|
#include <libdevcore/FixedHash.h>
|
|
#include <libdevcore/CommonData.h>
|
|
#include <libdevcrypto/SHA3.h>
|
|
|
|
namespace dev
|
|
{
|
|
namespace eth
|
|
{
|
|
|
|
inline string32 toString32(std::string const& _s)
|
|
{
|
|
string32 ret;
|
|
for (unsigned i = 0; i < 32; ++i)
|
|
ret[i] = i < _s.size() ? _s[i] : 0;
|
|
return ret;
|
|
}
|
|
|
|
template <class T> struct ABISerialiser {};
|
|
template <unsigned N> struct ABISerialiser<FixedHash<N>> { static bytes serialise(FixedHash<N> const& _t) { static_assert(N <= 32, "Cannot serialise hash > 32 bytes."); static_assert(N > 0, "Cannot serialise zero-length hash."); return bytes(32 - N, 0) + _t.asBytes(); } };
|
|
template <> struct ABISerialiser<u256> { static bytes serialise(u256 const& _t) { return h256(_t).asBytes(); } };
|
|
template <> struct ABISerialiser<u160> { static bytes serialise(u160 const& _t) { return bytes(12, 0) + h160(_t).asBytes(); } };
|
|
template <> struct ABISerialiser<string32> { static bytes serialise(string32 const& _t) { return bytesConstRef((byte const*)_t.data(), 32).toBytes(); } };
|
|
|
|
inline bytes abiInAux() { return {}; }
|
|
template <class T, class ... U> bytes abiInAux(T const& _t, U const& ... _u)
|
|
{
|
|
return ABISerialiser<T>::serialise(_t) + abiInAux(_u ...);
|
|
}
|
|
|
|
template <class ... T> bytes abiIn(std::string _id, T const& ... _t)
|
|
{
|
|
return sha3(_id).ref().cropped(0, 4).toBytes() + abiInAux(_t ...);
|
|
}
|
|
|
|
template <class T> struct ABIDeserialiser {};
|
|
template <unsigned N> struct ABIDeserialiser<FixedHash<N>> { static FixedHash<N> deserialise(bytesConstRef& io_t) { static_assert(N <= 32, "Parameter sizes must be at most 32 bytes."); FixedHash<N> ret; io_t.cropped(32 - N, N).populate(ret.ref()); io_t = io_t.cropped(32); return ret; } };
|
|
template <> struct ABIDeserialiser<u256> { static u256 deserialise(bytesConstRef& io_t) { u256 ret = fromBigEndian<u256>(io_t.cropped(0, 32)); io_t = io_t.cropped(32); return ret; } };
|
|
template <> struct ABIDeserialiser<u160> { static u160 deserialise(bytesConstRef& io_t) { u160 ret = fromBigEndian<u160>(io_t.cropped(12, 20)); io_t = io_t.cropped(32); return ret; } };
|
|
template <> struct ABIDeserialiser<string32> { static string32 deserialise(bytesConstRef& io_t) { string32 ret; io_t.cropped(0, 32).populate(bytesRef((byte*)ret.data(), 32)); io_t = io_t.cropped(32); return ret; } };
|
|
|
|
template <class T> T abiOut(bytes const& _data)
|
|
{
|
|
bytesConstRef o(&_data);
|
|
return ABIDeserialiser<T>::deserialise(o);
|
|
}
|
|
|
|
}
|
|
}
|
|
|