lazily_created< T > Class Template Reference

#include <lazily-created.h>

Inheritance diagram for lazily_created< T >:

Public Member Functions
virtual	~lazily_created ()
const T &	get_or_create () const

Private Member Functions
virtual std::unique_ptr< T >	create_object () const =0

Private Attributes
std::unique_ptr< T >	m_object

Detailed Description

template<typename T>
class lazily_created< T >

Template for deferring object creation until the object is needed.
   Copyright (C) 2024-2025 Free Software Foundation, Inc.
   Contributed by David Malcolm <dmalcolm@redhat.com>

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC 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 General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.   

A template for deferring object creation for a type T until the object
is needed, to avoid potentially expensive creation of T unless it's
actually needed (e.g. for directed graphs associated with a diagnostic,
which are ignored by the default "text" sink).   

Constructor & Destructor Documentation

~lazily_created()

template<typename T>

virtual lazily_created< T >::~lazily_created ( )

inlinevirtual

Member Function Documentation

create_object()

template<typename T>

virtual std::unique_ptr< T > lazily_created< T >::create_object ( ) const

privatepure virtual

Implemented in prebuilt_digraphs.

Referenced by lazily_created< std::vector< std::unique_ptr< digraphs::digraph > > >::get_or_create().

get_or_create()

template<typename T>

const T & lazily_created< T >::get_or_create ( ) const

inline

Referenced by diagnostics::html_builder::emit_global_graph(), and diagnostics::sarif_builder::report_global_digraph().

Field Documentation

m_object

template<typename T>

std::unique_ptr<T> lazily_created< T >::m_object

mutableprivate

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The documentation for this class was generated from the following file:

• lazily-created.h