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Get the Current Method Name (Hack)

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By doing some string manipulation on the current stack trace, you can extract the current method name.

This is useful with logging or analytics code, where similar methods may be invoked.

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Example code

Note that the code above is a bit fragile and doesn't work well with extension methods or closures, where the stack frames look a bit different.

Here's a more refined and robust example that works better with closures:

/// Helper function to extract the current method name from the stack trace
String getCurrentMethodName() {
  final frames = StackTrace.current.toString().split('\n');
  // The second frame in the stack trace contains the current method
  final frame = frames.elementAtOrNull(1);
  if (frame != null) {
    // Extract the method name from the frame. For example, given this input string:
    // #1      LoggerAnalyticsClient.trackAppOpen (package:flutter_ship_app/src/monitoring/logger_analytics_client.dart:28:9)
    // The code will return: LoggerAnalyticsClient.trackAppOpen
    final tokens = frame
        .replaceAll('<anonymous closure>', '<anonymous_closure>')
        .split(' ');
    final methodName = tokens.elementAtOrNull(tokens.length - 2);
    if (methodName != null) {
      // if the class name is included, remove it, otherwise return as is
      final methodTokens = methodName.split('.');
      // ignore_for_file:avoid-unsafe-collection-methods
      return methodTokens.length >= 2 &&
              methodTokens[1] != '<anonymous_closure>'
          ? (methodTokens.elementAtOrNull(1) ?? '')
          : methodName;
    }
  }
  return '';
}

In any case, this is just a hack:

• It's slow, so don't use it in hot code paths (like loops)
• It won't work if you enable obfuscation

So, if you want to use it, make sure it's enabled on debug builds only.

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