Errors

• An error is called a bullet.

• The throw keyword is shoot.

• Only expressions can be shot.

• Standard shoot form:

  shoot <EXPR>
  

• The try keyword is test.

• The catch keybord is wall.

• A test-wall is composed of one test and one wall.

• Wall statements can optionally have one expression. Without a expression, wall will catch all expressions shot.

• Standard test-wall form:

  test {
    # Code that possibly shoots a bullet
  } wall <IDENT>? {
    # Handle exception
  }