================================================================================
Empty comment
================================================================================

/**/

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(source_file
  (comment))

================================================================================
Whitespace comment
================================================================================

/*   */

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(source_file
  (comment))

================================================================================
Comment
================================================================================

/* This is a comment */

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(source_file
  (comment))

================================================================================
Comment with slashes
================================================================================

/* /// */

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(source_file
  (comment))

================================================================================
Nested comment
================================================================================

/* This is /* a /* nested */ comment */*/

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(source_file
  (comment)
  (identifier)
  (ERROR
    (operator)
    (operator)
    (operator)
    (operator)))

================================================================================
Unterminated comment
================================================================================

/*

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(source_file
  (ERROR
    (operator)
    (operator)))

================================================================================
Comment end-delimiter only
================================================================================

*/

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(source_file
  (ERROR
    (operator)
    (operator)))