StackTraceHelper.java 文件源码

/**
 * Convert a JavaScript stack trace (see {@code parseErrorStack} JS module) to an array of
 * {@link StackFrame}s.
 */
public static StackFrame[] convertJsStackTrace(@Nullable ReadableArray stack) {
  int size = stack != null ? stack.size() : 0;
  StackFrame[] result = new StackFrame[size];
  for (int i = 0; i < size; i++) {
    ReadableMap frame = stack.getMap(i);
    String methodName = frame.getString("methodName");
    String fileName = frame.getString("file");
    int lineNumber = -1;
    if (frame.hasKey(LINE_NUMBER_KEY) && !frame.isNull(LINE_NUMBER_KEY)) {
      lineNumber = frame.getInt(LINE_NUMBER_KEY);
    }
    int columnNumber = -1;
    if (frame.hasKey(COLUMN_KEY) && !frame.isNull(COLUMN_KEY)) {
      columnNumber = frame.getInt(COLUMN_KEY);
    }
    result[i] = new StackFrameImpl(fileName, methodName, lineNumber, columnNumber);
  }
  return result;
}