comparison generator/parser/list.h @ 1:e78566595089

initial import
author mandel
date Mon, 11 May 2009 16:01:50 +0000
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children 09a0f1d048f2
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0:36fb74dc547d 1:e78566595089
1 /****************************************************************************
2 **
3 ** Copyright (C) 1992-2008 Nokia. All rights reserved.
4 ** Copyright (C) 2002-2005 Roberto Raggi <roberto@kdevelop.org>
5 **
6 ** This file is part of Qt Jambi.
7 **
8 ** * Commercial Usage
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15 * GNU General Public License Usage
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39 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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41 ****************************************************************************/
42
43
44 #ifndef FASTLIST_H
45 #define FASTLIST_H
46
47 #include "smallobject.h"
48
49 template <typename Tp>
50 struct ListNode
51 {
52 Tp element;
53 int index;
54 mutable const ListNode<Tp> *next;
55
56 static ListNode *create(const Tp &element, pool *p)
57 {
58 ListNode<Tp> *node = new (p->allocate(sizeof(ListNode))) ListNode();
59 node->element = element;
60 node->index = 0;
61 node->next = node;
62
63 return node;
64 }
65
66 static ListNode *create(const ListNode *n1, const Tp &element, pool *p)
67 {
68 ListNode<Tp> *n2 = ListNode::create(element, p);
69
70 n2->index = n1->index + 1;
71 n2->next = n1->next;
72 n1->next = n2;
73
74 return n2;
75 }
76
77 inline ListNode<Tp>() { }
78
79 inline const ListNode<Tp> *at(int index) const
80 {
81 const ListNode<Tp> *node = this;
82 while (index != node->index)
83 node = node->next;
84
85 return node;
86 }
87
88 inline bool hasNext() const
89 { return index < next->index; }
90
91 inline int count() const
92 { return 1 + toBack()->index; }
93
94 inline const ListNode<Tp> *toFront() const
95 { return toBack()->next; }
96
97 inline const ListNode<Tp> *toBack() const
98 {
99 const ListNode<Tp> *node = this;
100 while (node->hasNext())
101 node = node->next;
102
103 return node;
104 }
105 };
106
107 template <class Tp>
108 inline const ListNode<Tp> *snoc(const ListNode<Tp> *list,
109 const Tp &element, pool *p)
110 {
111 if (!list)
112 return ListNode<Tp>::create(element, p);
113
114 return ListNode<Tp>::create(list->toBack(), element, p);
115 }
116
117 #endif // FASTLIST_H
118
119 // kate: space-indent on; indent-width 2; replace-tabs on;
120