package com.arrayfire;

class JNIException extends Exception {
  public JNIException(String message) {
    super(message);
  }

  /**
   * Called by native code during construction to set the location.
   */
  public void setLocation(String functionName, String file, int line) {
    JNIException.addStackTraceElement(this, functionName, file, line);
  }

  /**
   * Pushes a stack trace element onto the existing stack trace of the throwable.
   */
  public static void addStackTraceElement​(Throwable t, String functionName, String file, int line) {
    StackTraceElement[] currentStack = t​.getStackTrace();
    StackTraceElement[] newStack = new StackTraceElement[currentStack​.length + 1];
    System.arraycopy(currentStack, 0, newStack, 1, currentStack​.length);
    file = file.replace('\\', '/');
    if (file.lastIndexOf('/') > -1) {
      file = file.substring(file​.lastIndexOf('/') + 1);
    }
    newStack[0] = new StackTraceElement("<native>", functionName, file, line);
    t​.setStackTrace(newStack);
  }
}