aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/cppeditor/cppfileiterationorder.cpp
blob: 647535d8382c5dcf8b18d252fb0d38df2b298d39 (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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include "cppfileiterationorder.h"

#include <utils/qtcassert.h>

namespace CppEditor {

FileIterationOrder::Entry::Entry(const QString &filePath,
                                 const QString &projectPartId,
                                 int commonPrefixLength,
                                 int commonProjectPartPrefixLength)
    : filePath(filePath)
    , projectPartId(projectPartId)
    , commonFilePathPrefixLength(commonPrefixLength)
    , commonProjectPartPrefixLength(commonProjectPartPrefixLength)
{}

namespace {

bool cmpPrefixLengthAndText(int prefixLength1, int prefixLength2)
{
    return prefixLength1 > prefixLength2;
}

bool cmpLessFilePath(const FileIterationOrder::Entry &first,
                     const FileIterationOrder::Entry &second)
{
    return cmpPrefixLengthAndText(first.commonFilePathPrefixLength,
                                  second.commonFilePathPrefixLength);
}

bool cmpLessProjectPartId(const FileIterationOrder::Entry &first,
                          const FileIterationOrder::Entry &second)
{
    return cmpPrefixLengthAndText(first.commonProjectPartPrefixLength,
                                  second.commonProjectPartPrefixLength);
}

bool hasProjectPart(const FileIterationOrder::Entry &entry)
{
    return !entry.projectPartId.isEmpty();
}

} // anonymous namespace

bool operator<(const FileIterationOrder::Entry &first, const FileIterationOrder::Entry &second)
{
    if (hasProjectPart(first)) {
        if (hasProjectPart(second)) {
            if (first.projectPartId == second.projectPartId)
                return cmpLessFilePath(first, second);
            else
                return cmpLessProjectPartId(first, second);
        } else {
            return true;
        }
    } else {
        if (hasProjectPart(second))
            return false;
        else
            return cmpLessFilePath(first, second);
    }
}

FileIterationOrder::FileIterationOrder() = default;

FileIterationOrder::FileIterationOrder(const QString &referenceFilePath,
                                       const QString &referenceProjectPartId)
{
    setReference(referenceFilePath, referenceProjectPartId);
}

void FileIterationOrder::setReference(const QString &filePath,
                                      const QString &projectPartId)
{
    m_referenceFilePath = filePath;
    m_referenceProjectPartId = projectPartId;
}

bool FileIterationOrder::isValid() const
{
    return !m_referenceFilePath.isEmpty();
}

static int commonPrefixLength(const QString &filePath1, const QString &filePath2)
{
    const auto mismatches = std::mismatch(filePath1.begin(), filePath1.end(),
                                          filePath2.begin(), filePath2.end());
    return mismatches.first - filePath1.begin();
}

FileIterationOrder::Entry FileIterationOrder::createEntryFromFilePath(
        const QString &filePath,
        const QString &projectPartId) const
{
    const int filePrefixLength = commonPrefixLength(m_referenceFilePath, filePath);
    const int projectPartPrefixLength = commonPrefixLength(m_referenceProjectPartId, projectPartId);
    return Entry(filePath, projectPartId, filePrefixLength, projectPartPrefixLength);
}

void FileIterationOrder::insert(const QString &filePath, const QString &projectPartId)
{
    const Entry entry = createEntryFromFilePath(filePath, projectPartId);
    m_set.insert(entry);
}

void FileIterationOrder::remove(const QString &filePath, const QString &projectPartId)
{
    const auto needleElement = createEntryFromFilePath(filePath, projectPartId);
    const auto range = m_set.equal_range(needleElement);

    const auto toRemove = std::find_if(range.first, range.second, [filePath] (const Entry &entry) {
        return entry.filePath == filePath;
    });
    QTC_ASSERT(toRemove != range.second, return);
    m_set.erase(toRemove);
}

QStringList FileIterationOrder::toStringList() const
{
    QStringList result;

    for (const auto &entry : m_set)
        result.append(entry.filePath);

    return result;
}

} // namespace CppEditor