import Foundation
let pattern = #"^\s*?((?:virtual\s*|const\s*|friend\s*){0,3})\s*([\w]*?)\s*\w+\s*::\s*([\w]+)\s*(\(.*\))\s*(const)?\s*[{|:]"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = ##"""
#include <iostream>
#include <iomanip>
#include "Time.h"
using namespace std;
Time :: Time(const int h, const int m, const int s)
: hour(h), minute (m), second(s)
{}
virtual const void Time :: setTime(const int h, const int m, const int s)
{
hour = h;
minute = m;
second = s;
}
std::string Time :: print() const
{
cout << setw(2) << setfill('0') << hour << ":"
<< setw(2) << setfill('0') << minute << ":"
<< setw(2) << setfill('0') << second << "\n";
}
bool Time :: equals(const Time &otherTime)
{
if(hour == otherTime.hour
&& minute == otherTime.minute
&& second == otherTime.second)
return true;
else
return false;
}
"""##
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression