mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-02-13 11:25:02 -05:00
306ccd4927
-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT- Commits of previous years: - 2021:f47dda2c58- 2020:fa0074e2d8- 2019:aaaaad6ac9
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// Copyright (c) 2018-2022 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#include <util/spanparsing.h>
|
|
|
|
#include <span.h>
|
|
|
|
#include <algorithm>
|
|
#include <cstddef>
|
|
#include <string>
|
|
|
|
namespace spanparsing {
|
|
|
|
bool Const(const std::string& str, Span<const char>& sp)
|
|
{
|
|
if ((size_t)sp.size() >= str.size() && std::equal(str.begin(), str.end(), sp.begin())) {
|
|
sp = sp.subspan(str.size());
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Func(const std::string& str, Span<const char>& sp)
|
|
{
|
|
if ((size_t)sp.size() >= str.size() + 2 && sp[str.size()] == '(' && sp[sp.size() - 1] == ')' && std::equal(str.begin(), str.end(), sp.begin())) {
|
|
sp = sp.subspan(str.size() + 1, sp.size() - str.size() - 2);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Span<const char> Expr(Span<const char>& sp)
|
|
{
|
|
int level = 0;
|
|
auto it = sp.begin();
|
|
while (it != sp.end()) {
|
|
if (*it == '(' || *it == '{') {
|
|
++level;
|
|
} else if (level && (*it == ')' || *it == '}')) {
|
|
--level;
|
|
} else if (level == 0 && (*it == ')' || *it == '}' || *it == ',')) {
|
|
break;
|
|
}
|
|
++it;
|
|
}
|
|
Span<const char> ret = sp.first(it - sp.begin());
|
|
sp = sp.subspan(it - sp.begin());
|
|
return ret;
|
|
}
|
|
|
|
} // namespace spanparsing
|