val ('val')
WHITE_SPACE (' ')
IDENTIFIER ('x')
WHITE_SPACE (' ')
EQ ('=')
WHITE_SPACE (' ')
INTEGER_LITERAL ('1')
WHITE_SPACE ('\n')
BAD_CHARACTER ('')
WHITE_SPACE ('\n\n')
val ('val')
WHITE_SPACE (' ')
IDENTIFIER ('y')
WHITE_SPACE (' ')
EQ ('=')
WHITE_SPACE (' ')
INTEGER_LITERAL ('2')