aboutsummaryrefslogtreecommitdiffstats
path: root/libdevcore/Common.h
blob: d65cfeacd0fc802fd011d37a5406e2cd58d1d75d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
/*
    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 Common.h
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 *
 * Very common stuff (i.e. that every other header needs except vector_ref.h).
 */

#pragma once

// way too many unsigned to size_t warnings in 32 bit build
#ifdef _M_IX86
#pragma warning(disable:4244)
#endif

#if _MSC_VER && _MSC_VER < 1900
#define _ALLOW_KEYWORD_MACROS
#define noexcept throw()
#endif

#ifdef __INTEL_COMPILER
#pragma warning(disable:3682) //call through incomplete class
#endif

#include <map>
#include <unordered_map>
#include <vector>
#include <set>
#include <unordered_set>
#include <functional>
#include <string>
#include <chrono>

#if defined(__GNUC__)
#pragma warning(push)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif // defined(__GNUC__)

// See https://github.com/ethereum/libweb3core/commit/90680a8c25bfb48b24371b4abcacde56c181517c
// See https://svn.boost.org/trac/boost/ticket/11328
// Bob comment - perhaps we should just HARD FAIL here with Boost-1.58.00?
// It is quite old now, and requiring end-users to use a newer Boost release is probably not unreasonable.
#include <boost/version.hpp>
#if (BOOST_VERSION == 105800)
    #include "boost_multiprecision_number_compare_bug_workaround.hpp"
#endif // (BOOST_VERSION == 105800)

#include <boost/multiprecision/cpp_int.hpp>

#if defined(__GNUC__)
#pragma warning(pop)
#pragma GCC diagnostic pop
#endif // defined(__GNUC__)

#include "vector_ref.h"

using byte = uint8_t;

// Quote a given token stream to turn it into a string.
#define DEV_QUOTED_HELPER(s) #s
#define DEV_QUOTED(s) DEV_QUOTED_HELPER(s)

#define DEV_IGNORE_EXCEPTIONS(X) try { X; } catch (...) {}

namespace dev
{

// Binary data types.
using bytes = std::vector<byte>;
using bytesRef = vector_ref<byte>;
using bytesConstRef = vector_ref<byte const>;

// Numeric types.
using bigint = boost::multiprecision::number<boost::multiprecision::cpp_int_backend<>>;
using u64 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<64, 64, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;
using u128 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<128, 128, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;
using u256 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<256, 256, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;
using s256 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<256, 256, boost::multiprecision::signed_magnitude, boost::multiprecision::unchecked, void>>;
using u160 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<160, 160, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;
using s160 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<160, 160, boost::multiprecision::signed_magnitude, boost::multiprecision::unchecked, void>>;
using u512 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<512, 512, boost::multiprecision::unsigned_magnitude, boost::multiprecision::unchecked, void>>;
using s512 =  boost::multiprecision::number<boost::multiprecision::cpp_int_backend<512, 512, boost::multiprecision::signed_magnitude, boost::multiprecision::unchecked, void>>;
using u256s = std::vector<u256>;
using u160s = std::vector<u160>;
using u256Set = std::set<u256>;
using u160Set = std::set<u160>;

// Map types.
using StringMap = std::map<std::string, std::string>;

// Hash types.
using StringHashMap = std::unordered_map<std::string, std::string>;

// String types.
using strings = std::vector<std::string>;
// Fixed-length string types.
using string32 = std::array<char, 32>;

// Null/Invalid values for convenience.
static const bytes NullBytes;

/// Interprets @a _u as a two's complement signed number and returns the resulting s256.
inline s256 u2s(u256 _u)
{
    static const bigint c_end = bigint(1) << 256;
    if (boost::multiprecision::bit_test(_u, 255))
        return s256(-(c_end - _u));
    else
        return s256(_u);
}

/// @returns the two's complement signed representation of the signed number _u.
inline u256 s2u(s256 _u)
{
    static const bigint c_end = bigint(1) << 256;
    if (_u >= 0)
        return u256(_u);
    else
        return u256(c_end + _u);
}

template <size_t n> inline u256 exp10()
{
    return exp10<n - 1>() * u256(10);
}

template <> inline u256 exp10<0>()
{
    return u256(1);
}

/// RAII utility class whose destructor calls a given function.
class ScopeGuard
{
public:
    ScopeGuard(std::function<void(void)> _f): m_f(_f) {}
    ~ScopeGuard() { m_f(); }

private:
    std::function<void(void)> m_f;
};

enum class WithExisting: int
{
    Trust = 0,
    Verify,
    Rescue,
    Kill
};

}