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Telegram/lib_base/base/qthelp_regex.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "base/flags.h"
+
+#include <QtCore/QRegularExpression>
+
+namespace qthelp {
+
+class RegularExpressionMatch {
+public:
+	RegularExpressionMatch(const QRegularExpressionMatch &other) = delete;
+	RegularExpressionMatch(const RegularExpressionMatch &other) = delete;
+	RegularExpressionMatch(QRegularExpressionMatch &&match) : data_(std::move(match)) {
+	}
+	RegularExpressionMatch(RegularExpressionMatch &&other) : data_(std::move(other.data_)) {
+	}
+	RegularExpressionMatch &operator=(const QRegularExpressionMatch &match) = delete;
+	RegularExpressionMatch &operator=(const RegularExpressionMatch &other) = delete;
+	RegularExpressionMatch &operator=(QRegularExpressionMatch &&match) {
+		data_ = std::move(match);
+		return *this;
+	}
+	RegularExpressionMatch &operator=(RegularExpressionMatch &&other) {
+		data_ = std::move(other.data_);
+		return *this;
+	}
+	QRegularExpressionMatch *operator->() {
+		return &data_;
+	}
+	const QRegularExpressionMatch *operator->() const {
+		return &data_;
+	}
+	bool valid() const {
+		return data_.hasMatch();
+	}
+	explicit operator bool() const {
+		return valid();
+	}
+
+private:
+	QRegularExpressionMatch data_;
+
+};
+
+enum class RegExOption {
+	None = QRegularExpression::NoPatternOption,
+	CaseInsensitive = QRegularExpression::CaseInsensitiveOption,
+	DotMatchesEverything = QRegularExpression::DotMatchesEverythingOption,
+	Multiline = QRegularExpression::MultilineOption,
+	ExtendedSyntax = QRegularExpression::ExtendedPatternSyntaxOption,
+	InvertedGreediness = QRegularExpression::InvertedGreedinessOption,
+	DontCapture = QRegularExpression::DontCaptureOption,
+	UseUnicodeProperties = QRegularExpression::UseUnicodePropertiesOption,
+};
+using RegExOptions = base::flags<RegExOption>;
+inline constexpr auto is_flag_type(RegExOption) { return true; };
+
+inline RegularExpressionMatch regex_match(const QString &string, const QString &subject, RegExOptions options = 0) {
+	auto qtOptions = QRegularExpression::PatternOptions(static_cast<int>(options));
+	return RegularExpressionMatch(QRegularExpression(string, qtOptions).match(subject));
+}
+
+inline RegularExpressionMatch regex_match(const QString &string, QStringView subjectView, RegExOptions options = 0) {
+	auto qtOptions = QRegularExpression::PatternOptions(static_cast<int>(options));
+	return RegularExpressionMatch(QRegularExpression(string, qtOptions).match(subjectView));
+}
+
+} // namespace qthelp