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
|
/******************************************************************************
* Copyright (c) 2000-2020 Ericsson Telecom AB
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
*
* Contributors:
* Balasko, Jeno
* Forstner, Matyas
*
******************************************************************************/
#ifndef _langviz_Node_HH
#define _langviz_Node_HH
/**
* Base class for AST-classes.
*/
class Node {
private:
/** To detect missing/duplicated invoking of destructor. */
static int counter;
#ifdef MEMORY_DEBUG
/** Linked list for tracking undeleted nodes. */
Node *prev_node, *next_node;
#endif
protected:
/** Default constructor. */
Node();
/** The copy constructor. */
Node(const Node& p);
public:
/**
* "Virtual constructor".
*/
virtual Node* clone() const =0;
/** The destructor. */
virtual ~Node();
/** Gives an error message if counter is not zero. It can be
* invoked before the program exits (like check_mem_leak()) to
* verify that all Nodes are destructed. */
static void chk_counter();
};
#endif // _langviz_Node_HH
|
