(1, LITERAL, "a")
(1, SET)
(1, NUMBER, 2.0)
(1, SEMICOLON)
(3, FUNCTION)
(3, LITERAL, "wusi")
(3, OPEN_BRACKET)
(3, CLOSE_BRACKET)
(4, OPEN_CURVED_BRACKET)
(5, LITERAL, "$a")
(5, SET)
(5, NUMBER, 5.0)
(5, SEMICOLON)
(6, CLOSE_CURVED_BRACKET)
(7, LITERAL, "wusi")
(7, OPEN_BRACKET)
(7, CLOSE_BRACKET)
(7, SEMICOLON)
(9, LITERAL, "print")
(9, OPEN_BRACKET)
(9, LITERAL, "a")
(9, CLOSE_BRACKET)
(9, SEMICOLON)
(10, EOF)