ladybird/AK/ScopeLogger.h
Itamar 316fef5602 AK: Store the 'extra' field of ScopeLogger as String
It was previously stored as a StringView, which prevented us from
using temporary strings in the 'extra' argument.

The performance hit doesn't really matter because ScopeLogger is used
exclusively for debugging.
2021-06-29 00:07:19 +04:30

66 lines
1.6 KiB
C++

/*
* Copyright (c) 2020, Denis Campredon <deni_@hotmail.fr>
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/SourceLocation.h>
#include <AK/String.h>
#include <AK/StringBuilder.h>
namespace AK {
template<bool = true>
class ScopeLogger {
public:
ScopeLogger(StringView extra, const SourceLocation& location = SourceLocation::current())
: m_location(location)
, m_extra(extra)
{
StringBuilder sb;
for (auto indent = m_depth++; indent > 0; indent--)
sb.append(' ');
if (m_extra.is_empty())
dbgln("\033[1;{}m{}entering {}\033[0m", m_depth % 8 + 30, sb.to_string(), m_location);
else
dbgln("\033[1;{}m{}entering {}\033[0m ({})", m_depth % 8 + 30, sb.to_string(), m_location, m_extra);
}
ScopeLogger(SourceLocation location = SourceLocation::current())
: ScopeLogger({}, move(location))
{
}
~ScopeLogger()
{
StringBuilder sb;
auto depth = m_depth;
for (auto indent = --m_depth; indent > 0; indent--)
sb.append(' ');
if (m_extra.is_empty())
dbgln("\033[1;{}m{}leaving {}\033[0m", depth % 8 + 30, sb.to_string(), m_location);
else
dbgln("\033[1;{}m{}leaving {}\033[0m ({})", depth % 8 + 30, sb.to_string(), m_location, m_extra);
}
private:
static inline size_t m_depth = 0;
SourceLocation m_location;
String m_extra;
};
template<>
class ScopeLogger<false> {
public:
template<typename... Args>
ScopeLogger(Args...) { }
};
}
using AK::ScopeLogger;