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/*
SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
SPDX-License-Identifier: MIT
*/
#include "test-config.h"
#include <KSyntaxHighlighting/AbstractHighlighter>
#include <KSyntaxHighlighting/Definition>
#include <KSyntaxHighlighting/Format>
#include <KSyntaxHighlighting/Repository>
#include <KSyntaxHighlighting/State>
#include <QDir>
#include <QObject>
#include <QTest>
using namespace KSyntaxHighlighting;
class NullHighlighter : public AbstractHighlighter
{
public:
/**
* Read in the given file and cache it for the highlighting benchmarking
* @param inFileName file to read
*/
NullHighlighter(const QString &inFileName)
{
QFile f(inFileName);
if (!f.open(QFile::ReadOnly)) {
qWarning() << "Failed to open input file" << inFileName << ":" << f.errorString();
return;
}
QTextStream in(&f);
while (!in.atEnd()) {
m_fileContents.append(in.readLine());
}
}
/**
* highlight the in-memory stored file
* @return number of highlighted lines
*/
int highlightFile()
{
State state;
for (const auto &line : std::as_const(m_fileContents)) {
state = highlightLine(line, state);
}
return m_fileContents.size();
}
protected:
void applyFormat(int, int, const Format &) override
{
}
QStringList m_fileContents;
};
class HighlighterBenchmark : public QObject
{
Q_OBJECT
public:
explicit HighlighterBenchmark(QObject *parent = nullptr)
: QObject(parent)
{
}
private:
Repository m_repo;
private Q_SLOTS:
void initTestCase()
{
initRepositorySearchPaths(m_repo);
}
void cleanupTestCase()
{
}
void benchmarkHighlight_data()
{
QTest::addColumn<QString>("inFile");
QTest::addColumn<QString>("syntax");
const QDir dir(QStringLiteral(TESTSRCDIR "/input"));
for (const auto &fileName : dir.entryList(QDir::Files | QDir::NoSymLinks | QDir::Readable | QDir::Hidden, QDir::Name)) {
if (fileName == QLatin1String(".clang-format")) {
continue;
}
const auto inFile = dir.absoluteFilePath(fileName);
if (inFile.endsWith(QLatin1String(".syntax"))) {
continue;
}
QString syntax;
QFile syntaxOverride(inFile + QStringLiteral(".syntax"));
if (syntaxOverride.exists() && syntaxOverride.open(QFile::ReadOnly)) {
syntax = QString::fromUtf8(syntaxOverride.readAll()).trimmed();
}
QTest::newRow(fileName.toUtf8().constData()) << inFile << syntax;
}
}
void benchmarkHighlight()
{
QFETCH(QString, inFile);
QFETCH(QString, syntax);
NullHighlighter highlighter(inFile);
auto def = m_repo.definitionForFileName(inFile);
if (!syntax.isEmpty()) {
def = m_repo.definitionForName(syntax);
}
QVERIFY(def.isValid());
highlighter.setDefinition(def);
// trigger loading of definition per benchmarking loop
QVERIFY(!def.formats().isEmpty());
// benchmark the highlighting
// try to highlight ~ 20000 lines per file
// bail out, if file is empty, else we are stuck
for (int i = 0; i <= 20000;) {
int lines = highlighter.highlightFile();
if (lines <= 0) {
break;
}
i += lines;
}
}
};
QTEST_GUILESS_MAIN(HighlighterBenchmark)
#include "highlighter_benchmark.moc"
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