/usr/include/pegtl/analysis/insert_guard.hh is in pegtl-dev 1.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // Copyright (c) 2014-2015 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
#ifndef PEGTL_ANALYSIS_INSERT_GUARD_HH
#define PEGTL_ANALYSIS_INSERT_GUARD_HH
namespace pegtl
{
namespace analysis
{
template< typename C >
class insert_guard
{
public:
insert_guard( insert_guard && g )
: m_i( g.m_i ),
m_c( g.m_c )
{
g.m_c = 0;
}
insert_guard( C & c, const typename C::value_type & t )
: m_i( c.insert( t ) ),
m_c( & c )
{ }
~insert_guard()
{
if ( m_c && m_i.second ) {
m_c->erase( m_i.first );
}
}
insert_guard( const insert_guard & ) = delete;
void operator= ( const insert_guard & ) = delete;
explicit operator bool () const
{
return m_i.second;
}
private:
const std::pair< typename C::iterator, bool > m_i;
C * m_c;
};
template< typename C, typename T >
insert_guard< C > make_insert_guard( C & c, const T & t )
{
return insert_guard< C >( c, t );
}
} // analysis
} // pegtl
#endif
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