summaryrefslogtreecommitdiff
path: root/src/libs/qmljs/persistenttrie.h
blob: d3f60ae80e3a6b085aebc2f7d9485b321109e994 (plain)
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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/

#ifndef PERSISTENTTRIE_H
#define PERSISTENTTRIE_H

#include <qmljs/qmljs_global.h>

#include <QHash>
#include <QList>
#include <QSharedPointer>

#include <utility>

QT_FORWARD_DECLARE_CLASS(QString)
QT_FORWARD_DECLARE_CLASS(QStringList)
QT_FORWARD_DECLARE_CLASS(QDebug)

namespace QmlJS {
namespace PersistentTrie {

enum LookupFlags {
    CaseInsensitive = 0x1,
    Partial         = 0x2,
    SkipChars       = 0x4,
    SkipSpaces      = 0x8
};

class QMLJS_EXPORT TrieNode
{
public:
    typedef const TrieNode CTrie;
    typedef QSharedPointer<CTrie> Ptr;
    QString prefix;
    QList<Ptr> postfixes;

    TrieNode(const QString &pre = QString(), QList<Ptr> post = QList<Ptr>());
    TrieNode(const TrieNode &o);
    static Ptr create(const QString &pre = QString(), QList<Ptr> post = QList<Ptr>());

    static void complete(QStringList &results, const Ptr &trie, const QString &root,
                         const QString &base = QString(), LookupFlags flags = LookupFlags(CaseInsensitive|Partial));
    static bool contains(const Ptr &trie, const QString &value, LookupFlags flags = LookupFlags(0));
    static QStringList stringList(const Ptr &trie);
    static bool isSame(const Ptr &trie1, const Ptr &trie2);

    static Ptr replaceF(const Ptr &trie, const QHash<QString, QString> &replacements);
    static Ptr insertF(const Ptr &trie, const QString &value);
    static std::pair<Ptr,int> intersectF(const Ptr &v1, const Ptr &v2, int index1=0);
    static std::pair<Ptr,int> mergeF(const Ptr &v1, const Ptr &v2);

    static QDebug &printStrings(QDebug &dbg, const Ptr &trie);
    static QDebug &describe(QDebug &dbg, const Ptr &trie, int indent);
};

class QMLJS_EXPORT Trie
{
public:
    Trie();
    Trie(const TrieNode::Ptr &t);
    Trie(const Trie &o);

    QStringList complete(const QString &root, const QString &base = QString(),
        LookupFlags flags = LookupFlags(CaseInsensitive|Partial)) const;
    bool contains(const QString &value, LookupFlags flags = LookupFlags(0)) const;
    QStringList stringList() const;

    Trie insertF(const QString &value) const;
    Trie intersectF(const Trie &v) const;
    Trie mergeF(const Trie &v) const;
    Trie replaceF(const QHash<QString, QString> &replacements) const;

    void insert(const QString &value);
    void intersect(const Trie &v);
    void merge(const Trie &v);
    void replace(const QHash<QString, QString> &replacements);

    bool isEmpty() const;
    bool operator==(const Trie &o);
    bool operator!=(const Trie &o);

    friend QMLJS_EXPORT QDebug &operator<<(QDebug &dbg, const TrieNode::Ptr &trie);
    friend QMLJS_EXPORT QDebug &operator<<(QDebug &dbg, const Trie &trie);

    TrieNode::Ptr trie;
};

template <typename T> void enumerateTrieNode(const TrieNode::Ptr &trie, T &t,
    QString base = QString())
{
    if (trie.isNull())
        return;
    base.append(trie->prefix);
    foreach (const TrieNode::Ptr subT, trie->postfixes) {
        enumerateTrieNode(subT,t,base);
    }
    if (trie->postfixes.isEmpty())
        t(base);
}

QMLJS_EXPORT int matchStrength(const QString &searchStr, const QString &str);
QMLJS_EXPORT QStringList matchStrengthSort(const QString &searchString, QStringList &res);

QMLJS_EXPORT QDebug &operator<<(QDebug &dbg, const TrieNode::Ptr &trie);
QMLJS_EXPORT QDebug &operator<<(QDebug &dbg, const Trie &trie);

} // end namespace PersistentTrie
} // end namespace QmlJS

#endif // PERSISTENTTRIE_H