--- parser3/src/include/pa_pool.h	2001/01/27 15:21:05	1.8
+++ parser3/src/include/pa_pool.h	2020/12/15 17:10:31	1.95
@@ -1,43 +1,83 @@
-/*
-  $Id: pa_pool.h,v 1.8 2001/01/27 15:21:05 paf Exp $
+/** @file
+	Parser: pool class decl.
+
+	Copyright (c) 2000-2020 Art. Lebedev Studio (http://www.artlebedev.com)
+
+	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */
 
 #ifndef PA_POOL_H
 #define PA_POOL_H
 
-#include <stddef.h>
+#define IDENT_PA_POOL_H "$Id: pa_pool.h,v 1.95 2020/12/15 17:10:31 moko Exp $"
 
-#include "pa_string.h"
-#include "pa_hash.h"
+#include "pa_config_includes.h"
 #include "pa_array.h"
 
+/** 
+	Pool mechanizm allows users not to free up allocated objects,
+	leaving that problem to 'pools'.
+
+	@see Pooled
+*/
+
 class Pool {
 public:
+
+	struct Cleanup : public PA_Allocated {
+		void (*cleanup) (void *);
+		void *data;
+
+		Cleanup(void (*acleanup) (void *), void *adata): cleanup(acleanup), data(adata) {}
+	};
+
 	Pool();
 	~Pool();
-    void *malloc(size_t size);
-    void *calloc(size_t size);
 
-	String *make_string() { 
-		return new(this) String(this);
-	}
-	String *make_string(char *src) {
-		return new(this) String(this, src);
-	}
-	Hash *make_hash() {
-		return new(this) Hash(this);
-	}
-	Array *make_array() {
-		return new(this) Array(this);
-	}
-	Array *make_array(int initial_rows) {
-		return new(this) Array(this, initial_rows);
-	}
+	/// registers a routine to clean up non-pooled allocations
+	void register_cleanup(void (*cleanup) (void *), void *data);
+	/// unregister it, looking it up by it's data
+	void unregister_cleanup(void *cleanup_data);
+
+private:
+
+	Array<Cleanup> cleanups;
+
+private: 
+	
+	//{
+	/// @name implementation defined
+	bool real_register_cleanup(void (*cleanup) (void *), void *data);
+	//}
+
+private: 
+
+	/// throws register cleanup exception
+	void fail_register_cleanup() const;
 
 private: //disabled
 
-	Pool& operator = (Pool& src) { return *this; }
-	Pool(Pool& src) {}
+	Pool(const Pool&);
+	Pool& operator= (const Pool&);
+};
+
+/** 
+	Base for all classes that are allocated in 'pools'.
+	Holds Pool object.
+*/
+class Pooled {
+	// the pool i'm allocated on
+	Pool& fpool;
+public:
+
+	Pooled(Pool& apool);
+
+	/// my pool
+	//Pool& pool() const { return *fpool; }
+
+	/// Sole: this got called automatically from Pool::~Pool()
+	virtual ~Pooled();
+
 };
 
 #endif