; ---------------------------------------------------------------------------
; | File: parse-input.dat           Sean O'Connor                   6-22-89 |
; ---------------------------------------------------------------------------
;  DESCRIPTION
;
;  Sample sentences from the grammar of arithmetic expressions,
;
;     E -> E + T | T
;     T -> T * F | F
;     F -> ( E ) | ID
;
;  Example 4.8, page 176 of
;
;      COMPILERS: PRINCIPLES, TECHNIQUES, AND TOOLS,
;      Alfred V. Aho, Ravi Sethi, and Jeffrey D. Ullman,
;      Addison-Wesley, 1986
;
; ---------------------------------------------------------------------------

;  Correct sentences.

(id + [ id * id ])

(id * id + id)


;  Ungrammatical sentences.

()

(id + id xxx)

([ ])

(id +)

(id *)

(id ])