.. index:: pair: class; EE::System::RegExCache
.. _doxid-class_e_e_1_1_system_1_1_reg_ex_cache:

class EE::System::RegExCache
============================

.. toctree::
	:hidden:

Overview
~~~~~~~~




.. ref-code-block:: cpp
	:class: doxyrest-overview-code-block

	#include <regex.hpp>
	
	class RegExCache {
	public:
		// typedefs
	
		typedef std::shared_ptr<void> :ref:`CompiledPattern<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a22074c2e885c91465d5095fcb80fe8ef>`;

		// fields
	
		static constexpr size_t :ref:`MaxCachedPatterns<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1ab4a7509c98985b788f7e271a8ebbc08c>` = 8192;

		// methods
	
		bool :target:`isEnabled<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a9794a14e64a2c03b66c9433db8a96f34>`() const;
		void :target:`setEnabled<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a945890cb671e122ce65c8d359412e736>`(bool enabled);
		void :target:`insert<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a321f1e625e780510bddf5942bed98181>`(std::string_view pattern, :ref:`Uint32<doxid-namespace_e_e_1acb11e434631749f2da0e0004d6038558>` options, :ref:`CompiledPattern<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a22074c2e885c91465d5095fcb80fe8ef>` compiled);
		:ref:`CompiledPattern<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a22074c2e885c91465d5095fcb80fe8ef>` :target:`find<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1ad1dac79b9832b04ceb7f2852d521498e>`(std::string_view pattern, :ref:`Uint32<doxid-namespace_e_e_1acb11e434631749f2da0e0004d6038558>` options);
		size_t :target:`size<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a5316f469486151fa8da896a50c12e367>`();
		void :target:`clear<doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1ab3676855aa694253d8defde3c23077ab>`();
	};
.. _details-class_e_e_1_1_system_1_1_reg_ex_cache:

Detailed Documentation
~~~~~~~~~~~~~~~~~~~~~~



Typedefs
--------

.. index:: pair: typedef; CompiledPattern
.. _doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1a22074c2e885c91465d5095fcb80fe8ef:

.. ref-code-block:: cpp
	:class: doxyrest-title-code-block

	typedef std::shared_ptr<void> CompiledPattern

A compiled pattern, shared by every :ref:`RegEx <doxid-class_e_e_1_1_system_1_1_reg_ex>` that asked for the same pattern and options. The deleter stored inside it releases the pattern with the engine that compiled it, so a pattern stays valid for as long as a :ref:`RegEx <doxid-class_e_e_1_1_system_1_1_reg_ex>` holds it, even after the cache evicts its entry.

Fields
------

.. index:: pair: variable; MaxCachedPatterns
.. _doxid-class_e_e_1_1_system_1_1_reg_ex_cache_1ab4a7509c98985b788f7e271a8ebbc08c:

.. ref-code-block:: cpp
	:class: doxyrest-title-code-block

	static constexpr size_t MaxCachedPatterns = 8192

Cached patterns are evicted least-recently-used beyond this count. Syntax definitions are the bulk of the working set (every language contributes a few dozen patterns), so this keeps a whole session's worth resident while bounding the memory the cache can pin.