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Merge 43395b060 into af2a5a44b

Pull Request Pull Request #1351: Fix sign inversion (regression) in operation::opcode_to_positive.

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/src/chain/input.cpp

/**
 * Copyright (c) 2011-2022 libbitcoin developers (see AUTHORS)
 *
 * This file is part of libbitcoin.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <bitcoin/system/chain/input.hpp>

#include <algorithm>
#include <memory>
#include <utility>
#include <bitcoin/system/chain/context.hpp>
#include <bitcoin/system/chain/enums/magic_numbers.hpp>
#include <bitcoin/system/chain/point.hpp>
#include <bitcoin/system/chain/prevout.hpp>
#include <bitcoin/system/chain/script.hpp>
#include <bitcoin/system/chain/witness.hpp>
#include <bitcoin/system/define.hpp>
#include <bitcoin/system/math/math.hpp>
#include <bitcoin/system/stream/stream.hpp>

namespace libbitcoin {
namespace system {
namespace chain {

// Constructors.
// ----------------------------------------------------------------------------

// Default point is null_hash and point::null_index. 
// Default metadata is spent, invalid, max_size_t value. 
input::input() NOEXCEPT
  : input(
      to_shared<chain::point>(),
      to_shared<chain::script>(),
      to_shared<chain::witness>(),
      0, false)
{
}

input::input(chain::point&& point, chain::script&& script,
    uint32_t sequence) NOEXCEPT
  : input(
      to_shared(std::move(point)),
      to_shared(std::move(script)),
      to_shared<chain::witness>(),
      sequence, true)
{
}

input::input(const chain::point& point, const chain::script& script,
    uint32_t sequence) NOEXCEPT
  : input(
      to_shared(point),
      to_shared(script),
      to_shared<chain::witness>(),
      sequence, true)
{
}

input::input(const chain::point::cptr& point,
    const chain::script::cptr& script, uint32_t sequence) NOEXCEPT
  : input(
      point ? point : to_shared<chain::point>(),
      script ? script : to_shared<chain::script>(),
      to_shared<chain::witness>(),
      sequence, true)
{
}

input::input(chain::point&& point, chain::script&& script,
    chain::witness&& witness, uint32_t sequence) NOEXCEPT
  : input(
      to_shared(std::move(point)),
      to_shared(std::move(script)),
      to_shared(std::move(witness)),
      sequence, true)
{
}

input::input(const chain::point& point, const chain::script& script,
    const chain::witness& witness, uint32_t sequence) NOEXCEPT
  : input(
      to_shared(point),
      to_shared(script),
      to_shared(witness),
      sequence, true)
{
}

input::input(const chain::point::cptr& point, const chain::script::cptr& script,
    const chain::witness::cptr& witness, uint32_t sequence) NOEXCEPT
  : input(point, script, witness, sequence, true)
{
}

input::input(const data_slice& data) NOEXCEPT
    BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
  : input(stream::in::copy(data))
    BC_POP_WARNING()
{
}

input::input(std::istream&& stream) NOEXCEPT
  : input(read::bytes::istream(stream))
{
}

input::input(std::istream& stream) NOEXCEPT
  : input(read::bytes::istream(stream))
{
}

input::input(reader&& source) NOEXCEPT
  : input(from_data(source))
{
}

input::input(reader& source) NOEXCEPT
  : input(from_data(source))
{
}

// protected
input::input(const chain::point::cptr& point, const chain::script::cptr& script,
    const chain::witness::cptr& witness, uint32_t sequence, bool valid) NOEXCEPT
  : point_(point),
    script_(script),
    witness_(witness),
    sequence_(sequence),
    valid_(valid)
{
}

// Operators.
// ----------------------------------------------------------------------------

bool input::operator==(const input& other) const NOEXCEPT
{
    return (sequence_ == other.sequence_)
        && (point_ == other.point_ || *point_ == *other.point_)
        && (script_ == other.script_ || *script_ == *other.script_)
        && (witness_ == other.witness_ || *witness_ == *other.witness_);
}

bool input::operator!=(const input& other) const NOEXCEPT
{
    return !(*this == other);
}

// Deserialization.
// ----------------------------------------------------------------------------

// static/private
input input::from_data(reader& source) NOEXCEPT
{
    // Witness is deserialized by transaction.
    return
    {
        to_shared<chain::point>(source),
        to_shared<chain::script>(source, true),
        to_shared<chain::witness>(),
        source.read_4_bytes_little_endian(),
        source
    };
}

// Serialization.
// ----------------------------------------------------------------------------

data_chunk input::to_data() const NOEXCEPT
{
    data_chunk data(serialized_size(false));

    BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
    stream::out::copy ostream(data);
    BC_POP_WARNING()

    to_data(ostream);
    return data;
}

void input::to_data(std::ostream& stream) const NOEXCEPT
{
    write::bytes::ostream out(stream);
    to_data(out);
}

// Witness is serialized by transaction.
void input::to_data(writer& sink) const NOEXCEPT
{
    point_->to_data(sink);
    script_->to_data(sink, true);
    sink.write_4_bytes_little_endian(sequence_);
}

size_t input::serialized_size(bool witness) const NOEXCEPT
{
    // input.serialized_size(witness) provides sizing for witness, however
    // witnesses are serialized by the transaction. This is an ugly hack as a
    // consequence of bip144 not serializing witnesses as part of inputs, which
    // is logically the proper association.
    return point_->serialized_size()
        + script_->serialized_size(true)
        + (witness ? witness_->serialized_size(true) : zero)
        + sizeof(sequence_);
}

// Properties.
// ----------------------------------------------------------------------------

bool input::is_valid() const NOEXCEPT
{
    return valid_;
}

const point& input::point() const NOEXCEPT
{
    return *point_;
}

const chain::script& input::script() const NOEXCEPT
{
    return *script_;
}

const chain::witness& input::witness() const NOEXCEPT
{
    return *witness_;
}

const point::cptr& input::point_ptr() const NOEXCEPT
{
    return point_;
}

const chain::script::cptr& input::script_ptr() const NOEXCEPT
{
    return script_;
}

const chain::witness::cptr& input::witness_ptr() const NOEXCEPT
{
    return witness_;
}

uint32_t input::sequence() const NOEXCEPT
{
    return sequence_;
}

// Methods.
// ----------------------------------------------------------------------------

bool input::is_final() const NOEXCEPT
{
    return sequence_ == max_input_sequence;
}

bool input::is_locked(size_t height, uint32_t median_time_past) const NOEXCEPT
{
    // BIP68: if bit 31 is set then no consensus meaning is applied.
    if (get_right(sequence_, relative_locktime_disabled_bit))
        return false;

    // BIP68: the low 16 bits of the sequence apply to relative lock-time.
    const auto blocks = mask_left(sequence_, relative_locktime_mask_left);

    // BIP68: bit 22 determines if relative lock is time or block based.
    if (get_right(sequence_, relative_locktime_time_locked_bit))
    {
        // BIP68: change sequence to seconds by shifting up by 9 bits (x 512).
        auto time = shift_left(blocks, relative_locktime_seconds_shift_left);
        auto age = floored_subtract(median_time_past, metadata.median_time_past);
        return age < time;
    }

    auto age = floored_subtract(height, metadata.height);
    return age < blocks;
}

bool input::reserved_hash(hash_digest& out) const NOEXCEPT
{
    if (!witness::is_reserved_pattern(witness_->stack()))
        return false;

    std::copy_n(witness_->stack().front()->begin(), hash_size, out.begin());
    return true;
}

// private
bool input::embedded_script(chain::script& out) const NOEXCEPT
{
    if (!prevout)
        return false;

    const auto& ops = script_->ops();
    const auto& script = prevout->script();

    // There are no embedded sigops when the prevout script is not p2sh.
    if (!script::is_pay_script_hash_pattern(script.ops()))
        return false;

    // There are no embedded sigops when the input script is not push only.
    // The first operations access must be method-based to guarantee the cache.
    if (ops.empty() || !script::is_relaxed_push(ops))
        return false;

    // Parse the embedded script from the last input script item (data).
    // This cannot fail because there is no prefix to invalidate the length.
    out = { ops.back().data(), false };
    return true;
}

// Product overflows guarded by script size limit.
static_assert(max_script_size < 
    max_size_t / multisig_default_sigops / heavy_sigops_factor,
    "input sigop overflow guard");

// TODO: Prior to block 79400 sigops were limited only by policy.
// TODO: Create legacy sigops fork flag and pass here, return 0 if false.
// TODO: this was an unbipped flag day soft fork, prior to BIP16/141.
// TODO: if (nHeight > 79400 && GetSigOpCount() > MAX_BLOCK_SIGOPS).
size_t input::signature_operations(bool bip16, bool bip141) const NOEXCEPT
{
    if (bip141 && !prevout)
        return max_size_t;

    chain::script witness, embedded;

    // Penalize quadratic signature operations (bip141).
    const auto factor = bip141 ? heavy_sigops_factor : one;

    // Count heavy sigops in the input script.
    const auto sigops = script_->signature_operations(false) * factor;

    if (bip141 && witness_->extract_sigop_script(witness, prevout->script()))
    {
        // Add sigops in the witness script (bip141).
        return ceilinged_add(sigops, witness.signature_operations(true));
    }

    if (bip16 && embedded_script(embedded))
    {
        if (bip141 && witness_->extract_sigop_script(witness, embedded))
        {
            // Add sigops in the embedded witness script (bip141).
            return ceilinged_add(sigops, witness.signature_operations(true));
        }
        else
        {
            // Add heavy sigops in the embedded script (bip16).
            return ceilinged_add(sigops,
                embedded.signature_operations(true) * factor);
        }
    }

    return sigops;
}

// JSON value convertors.
// ----------------------------------------------------------------------------

namespace json = boost::json;

// boost/json will soon have NOEXCEPT: github.com/boostorg/json/pull/636
BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)

input tag_invoke(json::value_to_tag<input>, const json::value& value) NOEXCEPT
{
    return
    {
        json::value_to<chain::point>(value.at("point")),
        json::value_to<chain::script>(value.at("script")),
        json::value_to<chain::witness>(value.at("witness")),
        value.at("sequence").to_number<uint32_t>()
    };
}

void tag_invoke(json::value_from_tag, json::value& value,
    const input& input) NOEXCEPT
{
    value =
    {
        { "point", input.point() },
        { "script", input.script() },
        { "witness", input.witness() },
        { "sequence", input.sequence() }
    };
}

BC_POP_WARNING()

input::cptr tag_invoke(json::value_to_tag<input::cptr>,
    const json::value& value) NOEXCEPT
{
    return to_shared(tag_invoke(json::value_to_tag<input>{}, value));
}

// Shared pointer overload is required for navigation.
BC_PUSH_WARNING(SMART_PTR_NOT_NEEDED)
BC_PUSH_WARNING(NO_VALUE_OR_CONST_REF_SHARED_PTR)

void tag_invoke(json::value_from_tag tag, json::value& value,
    const input::cptr& input) NOEXCEPT
{
    tag_invoke(tag, value, *input);
}

BC_POP_WARNING()
BC_POP_WARNING()

} // namespace chain
} // namespace system
} // namespace libbitcoin

1	/**
2	* Copyright (c) 2011-2022 libbitcoin developers (see AUTHORS)
3	*
4	* This file is part of libbitcoin.
5	*
6	* This program is free software: you can redistribute it and/or modify
7	* it under the terms of the GNU Affero General Public License as published by
8	* the Free Software Foundation, either version 3 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU Affero General Public License for more details.
15	*
16	* You should have received a copy of the GNU Affero General Public License
17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
18	*/
19	#include <bitcoin/system/chain/input.hpp>
20
21	#include <algorithm>
22	#include <memory>
23	#include <utility>
24	#include <bitcoin/system/chain/context.hpp>
25	#include <bitcoin/system/chain/enums/magic_numbers.hpp>
26	#include <bitcoin/system/chain/point.hpp>
27	#include <bitcoin/system/chain/prevout.hpp>
28	#include <bitcoin/system/chain/script.hpp>
29	#include <bitcoin/system/chain/witness.hpp>
30	#include <bitcoin/system/define.hpp>
31	#include <bitcoin/system/math/math.hpp>
32	#include <bitcoin/system/stream/stream.hpp>
33
34	namespace libbitcoin {
35	namespace system {
36	namespace chain {
37
38	// Constructors.
39	// ----------------------------------------------------------------------------
40
41	// Default point is null_hash and point::null_index.
42	// Default metadata is spent, invalid, max_size_t value.
43	input::input() NOEXCEPT	22✔
44	: input(
45	to_shared<chain::point>(),	22✔
46	to_shared<chain::script>(),	22✔
47	to_shared<chain::witness>(),	22✔
48	0, false)	88✔
49	{
50	}	22✔
51
52	input::input(chain::point&& point, chain::script&& script,	66✔
53	uint32_t sequence) NOEXCEPT	66✔
54	: input(
55	to_shared(std::move(point)),	66✔
56	to_shared(std::move(script)),	66✔
57	to_shared<chain::witness>(),	66✔
58	sequence, true)	132✔
59	{
60	}	66✔
61
62	input::input(const chain::point& point, const chain::script& script,	734✔
63	uint32_t sequence) NOEXCEPT	734✔
64	: input(
65	to_shared(point),	734✔
66	to_shared(script),	734✔
67	to_shared<chain::witness>(),	734✔
68	sequence, true)	1,468✔
69	{
70	}	734✔
71
72	input::input(const chain::point::cptr& point,	×
73	const chain::script::cptr& script, uint32_t sequence) NOEXCEPT	×
74	: input(
75	point ? point : to_shared<chain::point>(),	×
76	script ? script : to_shared<chain::script>(),	×
77	to_shared<chain::witness>(),	×
78	sequence, true)	×
79	{
80	}	×
81
82	input::input(chain::point&& point, chain::script&& script,	11✔
83	chain::witness&& witness, uint32_t sequence) NOEXCEPT	11✔
84	: input(
85	to_shared(std::move(point)),	11✔
86	to_shared(std::move(script)),	11✔
87	to_shared(std::move(witness)),	11✔
88	sequence, true)	11✔
89	{
90	}	11✔
91
92	input::input(const chain::point& point, const chain::script& script,	1✔
93	const chain::witness& witness, uint32_t sequence) NOEXCEPT	1✔
94	: input(
95	to_shared(point),	1✔
96	to_shared(script),	1✔
97	to_shared(witness),	1✔
98	sequence, true)	1✔
99	{
100	}	1✔
101
102	input::input(const chain::point::cptr& point, const chain::script::cptr& script,	×
103	const chain::witness::cptr& witness, uint32_t sequence) NOEXCEPT	×
104	: input(point, script, witness, sequence, true)	×
105	{
106	}	×
107
108	input::input(const data_slice& data) NOEXCEPT	5✔
109	BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
110	: input(stream::in::copy(data))	5✔
111	BC_POP_WARNING()
112	{
113	}	5✔
114
115	input::input(std::istream&& stream) NOEXCEPT	5✔
116	: input(read::bytes::istream(stream))	5✔
117	{
118	}	5✔
119
120	input::input(std::istream& stream) NOEXCEPT	3✔
121	: input(read::bytes::istream(stream))	3✔
122	{
123	}	3✔
124
125	input::input(reader&& source) NOEXCEPT	8✔
126	: input(from_data(source))	8✔
127	{
128	}	8✔
129
130	input::input(reader& source) NOEXCEPT	225✔
131	: input(from_data(source))	225✔
132	{
133	}	225✔
134
135	// protected
136	input::input(const chain::point::cptr& point, const chain::script::cptr& script,	1,067✔
137	const chain::witness::cptr& witness, uint32_t sequence, bool valid) NOEXCEPT	1,067✔
138	: point_(point),
139	script_(script),
140	witness_(witness),
141	sequence_(sequence),	1,067✔
142	valid_(valid)	1,067✔
143	{
144	}	1,067✔
145
146	// Operators.
147	// ----------------------------------------------------------------------------
148
149	bool input::operator==(const input& other) const NOEXCEPT	40✔
150	{
151	return (sequence_ == other.sequence_)	40✔
152	&& (point_ == other.point_ \|\| point_ == other.point_)	38✔
153	&& (script_ == other.script_ \|\| script_ == other.script_)	38✔
154	&& (witness_ == other.witness_ \|\| witness_ == other.witness_);	78✔
155	}
156
157	bool input::operator!=(const input& other) const NOEXCEPT	2✔
158	{
159	return !(*this == other);	2✔
160	}
161
162	// Deserialization.
163	// ----------------------------------------------------------------------------
164
165	// static/private
166	input input::from_data(reader& source) NOEXCEPT	233✔
167	{
168	// Witness is deserialized by transaction.
169	return	233✔
170	{
171	to_shared<chain::point>(source),	233✔
172	to_shared<chain::script>(source, true),	466✔
173	to_shared<chain::witness>(),	233✔
174	source.read_4_bytes_little_endian(),	233✔
175	source
176	};	466✔
177	}
178
179	// Serialization.
180	// ----------------------------------------------------------------------------
181
182	data_chunk input::to_data() const NOEXCEPT	1✔
183	{
184	data_chunk data(serialized_size(false));	1✔
185
186	BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
187	stream::out::copy ostream(data);	1✔
188	BC_POP_WARNING()
189
190	to_data(ostream);	1✔
191	return data;	2✔
192	}	1✔
193
194	void input::to_data(std::ostream& stream) const NOEXCEPT	2✔
195	{
196	write::bytes::ostream out(stream);	2✔
197	to_data(out);	2✔
198	}	2✔
199
200	// Witness is serialized by transaction.
201	void input::to_data(writer& sink) const NOEXCEPT	1,357✔
202	{
203	point_->to_data(sink);	1,357✔
204	script_->to_data(sink, true);	1,357✔
205	sink.write_4_bytes_little_endian(sequence_);	1,357✔
206	}	1,357✔
207
208	size_t input::serialized_size(bool witness) const NOEXCEPT	51✔
209	{
210	// input.serialized_size(witness) provides sizing for witness, however
211	// witnesses are serialized by the transaction. This is an ugly hack as a
212	// consequence of bip144 not serializing witnesses as part of inputs, which
213	// is logically the proper association.
214	return point_->serialized_size()	51✔
215	+ script_->serialized_size(true)	51✔
216	+ (witness ? witness_->serialized_size(true) : zero)	51✔
217	+ sizeof(sequence_);	51✔
218	}
219
220	// Properties.
221	// ----------------------------------------------------------------------------
222
223	bool input::is_valid() const NOEXCEPT	15✔
224	{
225	return valid_;	15✔
226	}
227
228	const point& input::point() const NOEXCEPT	155✔
229	{
230	return *point_;	155✔
231	}
232
233	const chain::script& input::script() const NOEXCEPT	76✔
234	{
235	return *script_;	76✔
236	}
237
238	const chain::witness& input::witness() const NOEXCEPT	1,793✔
239	{
240	return *witness_;	1,793✔
241	}
242
243	const point::cptr& input::point_ptr() const NOEXCEPT	×
244	{
245	return point_;	×
246	}
247
248	const chain::script::cptr& input::script_ptr() const NOEXCEPT	1,555✔
249	{
250	return script_;	1,555✔
251	}
252
253	const chain::witness::cptr& input::witness_ptr() const NOEXCEPT	×
254	{
255	return witness_;	×
256	}
257
258	uint32_t input::sequence() const NOEXCEPT	73✔
259	{
260	return sequence_;	73✔
261	}
262
263	// Methods.
264	// ----------------------------------------------------------------------------
265
266	bool input::is_final() const NOEXCEPT	22✔
267	{
268	return sequence_ == max_input_sequence;	22✔
269	}
270
271	bool input::is_locked(size_t height, uint32_t median_time_past) const NOEXCEPT	10✔
272	{
273	// BIP68: if bit 31 is set then no consensus meaning is applied.
274	if (get_right(sequence_, relative_locktime_disabled_bit))	10✔
275	return false;
276
277	// BIP68: the low 16 bits of the sequence apply to relative lock-time.
278	const auto blocks = mask_left(sequence_, relative_locktime_mask_left);	8✔
279
280	// BIP68: bit 22 determines if relative lock is time or block based.
281	if (get_right(sequence_, relative_locktime_time_locked_bit))	8✔
282	{
283	// BIP68: change sequence to seconds by shifting up by 9 bits (x 512).
284	auto time = shift_left(blocks, relative_locktime_seconds_shift_left);	3✔
285	auto age = floored_subtract(median_time_past, metadata.median_time_past);	3✔
286	return age < time;	3✔
287	}
288
289	auto age = floored_subtract(height, metadata.height);	5✔
290	return age < blocks;	5✔
291	}
292
293	bool input::reserved_hash(hash_digest& out) const NOEXCEPT	×
294	{
295	if (!witness::is_reserved_pattern(witness_->stack()))	×
296	return false;
297
298	std::copy_n(witness_->stack().front()->begin(), hash_size, out.begin());	×
299	return true;	×
300	}
301
302	// private
303	bool input::embedded_script(chain::script& out) const NOEXCEPT	1✔
304	{
305	if (!prevout)	1✔
306	return false;
307
308	const auto& ops = script_->ops();	×
309	const auto& script = prevout->script();	×
310
311	// There are no embedded sigops when the prevout script is not p2sh.
312	if (!script::is_pay_script_hash_pattern(script.ops()))	×
313	return false;
314
315	// There are no embedded sigops when the input script is not push only.
316	// The first operations access must be method-based to guarantee the cache.
317	if (ops.empty() \|\| !script::is_relaxed_push(ops))	×
318	return false;	×
319
320	// Parse the embedded script from the last input script item (data).
321	// This cannot fail because there is no prefix to invalidate the length.
322	out = { ops.back().data(), false };	×
323	return true;	×
324	}
325
326	// Product overflows guarded by script size limit.
327	static_assert(max_script_size <
328	max_size_t / multisig_default_sigops / heavy_sigops_factor,
329	"input sigop overflow guard");
330
331	// TODO: Prior to block 79400 sigops were limited only by policy.
332	// TODO: Create legacy sigops fork flag and pass here, return 0 if false.
333	// TODO: this was an unbipped flag day soft fork, prior to BIP16/141.
334	// TODO: if (nHeight > 79400 && GetSigOpCount() > MAX_BLOCK_SIGOPS).
335	size_t input::signature_operations(bool bip16, bool bip141) const NOEXCEPT	5✔
336	{
337	if (bip141 && !prevout)	5✔
338	return max_size_t;
339
340	chain::script witness, embedded;	3✔
341
342	// Penalize quadratic signature operations (bip141).
343	const auto factor = bip141 ? heavy_sigops_factor : one;	3✔
344
345	// Count heavy sigops in the input script.
346	const auto sigops = script_->signature_operations(false) * factor;	3✔
347
348	if (bip141 && witness_->extract_sigop_script(witness, prevout->script()))	3✔
349	{
350	// Add sigops in the witness script (bip141).
351	return ceilinged_add(sigops, witness.signature_operations(true));	×
352	}
353
354	if (bip16 && embedded_script(embedded))	3✔
355	{
356	if (bip141 && witness_->extract_sigop_script(witness, embedded))	×
357	{
358	// Add sigops in the embedded witness script (bip141).
359	return ceilinged_add(sigops, witness.signature_operations(true));	×
360	}
361	else
362	{
363	// Add heavy sigops in the embedded script (bip16).
364	return ceilinged_add(sigops,	×
365	embedded.signature_operations(true) * factor);	×
366	}
367	}
368
369	return sigops;
370	}	3✔
371
372	// JSON value convertors.
373	// ----------------------------------------------------------------------------
374
375	namespace json = boost::json;
376
377	// boost/json will soon have NOEXCEPT: github.com/boostorg/json/pull/636
378	BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
379
380	input tag_invoke(json::value_to_tag<input>, const json::value& value) NOEXCEPT	5✔
381	{
382	return	5✔
383	{
384	json::value_to<chain::point>(value.at("point")),	5✔
385	json::value_to<chain::script>(value.at("script")),	5✔
386	json::value_to<chain::witness>(value.at("witness")),	10✔
387	value.at("sequence").to_number<uint32_t>()	10✔
388	};	5✔
389	}
390
391	void tag_invoke(json::value_from_tag, json::value& value,	10✔
392	const input& input) NOEXCEPT
393	{
394	value =	10✔
395	{
396	{ "point", input.point() },
397	{ "script", input.script() },
398	{ "witness", input.witness() },
399	{ "sequence", input.sequence() }
400	};	10✔
401	}	10✔
402
403	BC_POP_WARNING()
404
405	input::cptr tag_invoke(json::value_to_tag<input::cptr>,	×
406	const json::value& value) NOEXCEPT
407	{
408	return to_shared(tag_invoke(json::value_to_tag<input>{}, value));	×
409	}
410
411	// Shared pointer overload is required for navigation.
412	BC_PUSH_WARNING(SMART_PTR_NOT_NEEDED)
413	BC_PUSH_WARNING(NO_VALUE_OR_CONST_REF_SHARED_PTR)
414
415	void tag_invoke(json::value_from_tag tag, json::value& value,	8✔
416	const input::cptr& input) NOEXCEPT
417	{
418	tag_invoke(tag, value, *input);	8✔
419	}	8✔
420
421	BC_POP_WARNING()
422	BC_POP_WARNING()
423
424	} // namespace chain
425	} // namespace system
426	} // namespace libbitcoin

libbitcoin / libbitcoin-system / 4586521533

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