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77 lines
2.4 KiB
Racket
77 lines
2.4 KiB
Racket
#lang racket/base
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;; Make sure the old token type also works fine.
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(require brag/examples/simple-line-drawing
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brag/support
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racket/list
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br-parser-tools/lex
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(prefix-in : br-parser-tools/lex-sre)
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rackunit)
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(define-tokens tokens (INTEGER STRING |;| EOF))
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(define (make-tokenizer ip)
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(port-count-lines! ip)
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(define lex (lexer-src-pos
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[(:+ numeric)
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(token-INTEGER (string->number lexeme))]
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[upper-case
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(token-STRING lexeme)]
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["b"
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(token-STRING " ")]
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[";"
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(|token-;| lexeme)]
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[whitespace
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(return-without-pos (lex input-port))]
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[(eof)
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(token-EOF 'eof)]))
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(lambda ()
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(lex ip)))
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(define the-parsed-object-stx
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(parse (make-tokenizer (open-input-string #<<EOF
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3 9 X;
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6 3 b 3 X 3 b;
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3 9 X;
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EOF
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))))
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(check-true (syntax-original? the-parsed-object-stx))
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;; Does the rule name "drawing" also have the proper "original?" property set?
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(check-true (syntax-original? (first (syntax->list the-parsed-object-stx))))
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(check-equal? (syntax->datum the-parsed-object-stx)
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'(drawing (rows (repeat 3) (chunk 9 "X") ";")
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(rows (repeat 6) (chunk 3 " ") (chunk 3 "X") (chunk 3 " ") ";")
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(rows (repeat 3) (chunk 9 "X") ";")))
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(define the-parsed-object (syntax->list the-parsed-object-stx))
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(check-equal? (syntax-line the-parsed-object-stx) 1)
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(check-equal? (syntax-column the-parsed-object-stx) 0)
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(check-equal? (syntax-position the-parsed-object-stx) 1)
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(check-equal? (syntax-span the-parsed-object-stx) 28)
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(check-equal? (length the-parsed-object) 4)
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(check-equal? (syntax->datum (second the-parsed-object))
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'(rows (repeat 3) (chunk 9 "X") ";"))
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(check-equal? (syntax-line (list-ref the-parsed-object 1)) 1)
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(check-equal? (syntax->datum (third the-parsed-object))
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'(rows (repeat 6) (chunk 3 " ") (chunk 3 "X") (chunk 3 " ") ";"))
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(check-equal? (syntax-line (list-ref the-parsed-object 2)) 2)
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(check-equal? (syntax->datum (fourth the-parsed-object))
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'(rows (repeat 3) (chunk 9 "X") ";"))
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(check-equal? (syntax-line (list-ref the-parsed-object 3)) 3)
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;; FIXME: add tests to make sure location is as we expect.
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;;
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;; FIXME: handle the EOF issue better. Something in cfg-parser
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;; appears to deviate from br-parser-tools/yacc with regards to the stop
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;; token.
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