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Taken from r51 of <http://lalr-scm.googlecode.com/svn/trunk>. * module/Makefile.am (SYSTEM_BASE_SOURCES): Add `system/base/lalr.scm'. (NOCOMP_SOURCES): Add `system/base/lalr.upstream.scm'. * module/system/base/lalr.scm, module/system/base/lalr.upstream.scm: New files. * test-suite/Makefile.am (LALR_TESTS, LALR_EXTRA, TESTS, TESTS_ENVIRONMENT): New variables. (EXTRA_DIST): Add $(LALR_EXTRA). * test-suite/lalr/common-test.scm, test-suite/lalr/glr-test.scm, test-suite/lalr/test-glr-associativity.scm, test-suite/lalr/test-glr-basics-01.scm, test-suite/lalr/test-glr-basics-02.scm, test-suite/lalr/test-glr-basics-03.scm, test-suite/lalr/test-glr-basics-04.scm, test-suite/lalr/test-glr-basics-05.scm, test-suite/lalr/test-glr-script-expression.scm, test-suite/lalr/test-glr-single-expressions.scm, test-suite/lalr/test-lr-associativity-01.scm, test-suite/lalr/test-lr-associativity-02.scm, test-suite/lalr/test-lr-associativity-03.scm, test-suite/lalr/test-lr-associativity-04.scm, test-suite/lalr/test-lr-basics-01.scm, test-suite/lalr/test-lr-basics-02.scm, test-suite/lalr/test-lr-basics-03.scm, test-suite/lalr/test-lr-basics-04.scm, test-suite/lalr/test-lr-basics-05.scm, test-suite/lalr/test-lr-error-recovery-01.scm, test-suite/lalr/test-lr-error-recovery-02.scm, test-suite/lalr/test-lr-no-clause.scm, test-suite/lalr/test-lr-script-expression.scm, test-suite/lalr/test-lr-single-expressions.scm: New files.
119 lines
3 KiB
Scheme
119 lines
3 KiB
Scheme
;;; test-lr-script-expression.scm --
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;;
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;;Parse scripts, each line an expression.
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;;
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(load "common-test.scm")
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(define (doit . tokens)
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(let ((parser (lalr-parser (expect: 0)
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(N O C T (left: A) (left: M) (nonassoc: U))
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(script (lines) : (reverse $1))
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(lines (lines line) : (cons $2 $1)
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(line) : (list $1))
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(line (T) : #\newline
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(E T) : $1
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(error T) : (list 'error-clause $2))
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(E (N) : $1
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(E A E) : ($2 $1 $3)
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(E M E) : ($2 $1 $3)
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(A E (prec: U)) : ($1 $2)
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(O E C) : $2))))
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(parser (make-lexer tokens) error-handler)))
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;;; --------------------------------------------------------------------
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;;; Correct input
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(check
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(doit (make-lexical-token 'T #f #\newline))
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=> '(#\newline))
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(check
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(doit (make-lexical-token 'N #f 1)
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(make-lexical-token 'T #f #\newline))
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=> '(1))
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(check
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(doit (make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2)
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(make-lexical-token 'T #f #\newline))
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=> '(3))
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(check
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(doit (make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2)
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(make-lexical-token 'M #f *)
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(make-lexical-token 'N #f 3)
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(make-lexical-token 'T #f #\newline))
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=> '(7))
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(check
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(doit (make-lexical-token 'O #f #\()
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(make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2)
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(make-lexical-token 'C #f #\))
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(make-lexical-token 'M #f *)
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(make-lexical-token 'N #f 3)
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(make-lexical-token 'T #f #\newline))
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=> '(9))
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(check
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(doit (make-lexical-token 'O #f #\()
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(make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2)
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(make-lexical-token 'C #f #\))
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(make-lexical-token 'M #f *)
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(make-lexical-token 'N #f 3)
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(make-lexical-token 'T #f #\newline)
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(make-lexical-token 'N #f 4)
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(make-lexical-token 'M #f /)
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(make-lexical-token 'N #f 5)
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(make-lexical-token 'T #f #\newline))
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=> '(9 4/5))
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;;; --------------------------------------------------------------------
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(check
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;;Successful error recovery.
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(doit (make-lexical-token 'O #f #\()
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(make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2)
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(make-lexical-token 'M #f *)
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(make-lexical-token 'N #f 3)
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(make-lexical-token 'T #f #\newline)
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(make-lexical-token 'N #f 4)
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(make-lexical-token 'M #f /)
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(make-lexical-token 'N #f 5)
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(make-lexical-token 'T #f #\newline))
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=> '((error-clause #f)
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4/5))
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(check
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;;Unexpected end of input.
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(let ((r (doit (make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'N #f 2))))
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(cons r *error*))
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=> '(#f (error-handler "Syntax error: unexpected end of input")))
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(check
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;;Unexpected end of input.
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(let ((r (doit (make-lexical-token 'N #f 1)
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(make-lexical-token 'A #f +)
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(make-lexical-token 'T #f #\newline))))
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(cons r *error*))
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=> '(((error-clause #f))
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(error-handler "Syntax error: unexpected token : " . T)))
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;;; end of file
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