/usr/include/Synopsis/Trace.hh is in libsynopsis0.12-dev 0.12-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright (C) 2004 Stefan Seefeld
// All rights reserved.
// Licensed to the public under the terms of the GNU LGPL (>= 2),
// see the file COPYING for details.
//
#ifndef Synopsis_Trace_hh_
#define Synopsis_Trace_hh_
#include <iostream>
#include <string>
namespace Synopsis
{
class Trace
{
public:
// This category list is incomplete and needs to be filled in as
// more code is being written.
enum Category { NONE=0x0,
PTREE=0x01,
SYMBOLLOOKUP=0x02,
PARSING=0x04,
TRANSLATION=0x08,
ALL=0xff};
struct Entry
{
Entry(bool e);
Entry(Entry const &e) : enabled(e.enabled) { e.enabled = false;}
~Entry();
template <typename T> Entry const &operator<<(T const &t) const;
mutable bool enabled;
};
friend struct Entry;
Trace(std::string const &s, unsigned int c)
: my_scope(s), my_visibility(my_mask & c)
{
if (!my_visibility) return;
std::cout << indent() << "entering " << my_scope << std::endl;
++my_level;
}
template <typename T>
Trace(std::string const &s, unsigned int c, T const &t)
: my_scope(s), my_visibility(my_mask & c)
{
if (!my_visibility) return;
std::cout << indent() << "entering " << my_scope << ' ' << t << std::endl;
++my_level;
}
~Trace()
{
if (!my_visibility) return;
--my_level;
std::cout << indent() << "leaving " << my_scope << std::endl;
}
template <typename T>
Entry operator<<(T const &t) const;
static void enable(unsigned int mask = ALL) { my_mask = mask;}
private:
static std::string indent() { return std::string(my_level, ' ');}
static unsigned int my_mask;
static size_t my_level;
std::string my_scope;
bool my_visibility;
};
inline Trace::Entry::Entry(bool e)
: enabled(e)
{
if (enabled)
std::cout << Trace::indent();
}
inline Trace::Entry::~Entry()
{
if (enabled)
std::cout << std::endl;
}
template <typename T>
inline Trace::Entry const &Trace::Entry::operator<<(T const &t) const
{
if (enabled)
std::cout << t;
return *this;
}
template <typename T>
inline Trace::Entry Trace::operator<<(T const &t) const
{
Entry entry(my_visibility);
return entry << t;
}
}
#endif
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