import Foundation
let pattern = #"(?<!Call\(Name\(')\b\w+\b(?=', Load)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"Module([Assign([Name('a', Store())], Num(2)), Assign([Name('b', Store())], Num(3)), Assign([Name('c', Store())], Str('Hello')), Assign([Name('x', Store())], BinOp(Name('a', Load()), Add(), Name('b', Load()))), Assign([Name('x', Store())], Name('a', Load())), Expr(Call(Name('print', Load()), [Name('a', Load())], [], None, None)), For(Name('i', Store()), Call(Name('range', Load()), [Num(10)], [], None, None), [Expr(Call(Name('print', Load()), [Name('a', Load())], [], None, None))], [])])"#
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