import Foundation
let pattern = #"^\{((?:(?:(?!\}).)+)(?:(?:\}\})?(?:(?:(?!\}).)+))+)\}(?!\})"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = ##"""
{class: name}
{ class : name }
{ 'class' : 'name' }
{ 'key' : 'value', 'key': 'value' }
{'key': 'value'}
{' key ': ' value ' , 'this': 'guy' }
{' class ': ' in session ' , 'this': 'guy' } string
{' class ': ' in session ' , 'this': 'guy' } string with {{ brackets }}
{' class ': '{{ parse me }}' }
{'key': 'value', checked: true}
{'key': 'value', checked: {{ bool }} }
{'asdf': 'fda', checked: {{ bool }}, strange: {{ bool }} } stuff {{ more }} #{interpolate}
"""##
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