import Foundation
let pattern = #"type\s([_A-Za-z]+)\s*=\s*(function|procedure)(.*?cdecl;)\s*var(\s[_A-Za-z]+):\s*([_A-Za-z]+)\s(external.*?;)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .dotMatchesLineSeparators)
let testString = #"""
// It's better to create the object with the right prototype from the start.
type TJS_SetPrototype = function (cx: PJSContext; var obj: PJSObject;
var proto: PJSObject):Boolean; cdecl;
var JS_SetPrototype: TJS_SetPrototype external SpiderMonkeyLib name 'SM_SetPrototype';
/// Write access an object's reserved slots
type TJS_SetReservedSlot = procedure (obj: PJSObject; index: uint32;
var v: jsval); cdecl;
var JS_SetReservedSlot: TJS_SetReservedSlot external SpiderMonkeyLib name 'SM_SetReservedSlot';
"""#
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