Lexical Analysis - Introduction to Compiler Construction in a Java World - page 58

Exercise 2.10. Modify Scanner in the j-- compiler to scan (and ignore) Java multi-line
comments.
Exercise 2.11. Modify Scanner in the j-- compiler to recognize and return all Java oper-
ators.
Exercise 2.12. Modify Scanner in the j-- compiler to recognize and return all Java reserved
words.
Exercise 2.13. Modify Scanner in the j-- compiler to recognize and return Java double
precision literal (returned as DOUBLE_LITERAL ).
Exercise 2.14. Modify Scanner in the j-- compiler to recognize and return all other literals
in Java, for example, FLOAT_LITERAL , LONG_LITERAL , etc.
Exercise 2.15. Modify Scanner in the j-- compiler to recognize and return all other rep-
resentations of integers (hexadecimal, octal, etc.).
The following exercises ask you to modify the j--.jj file in the j-- compiler for recog-
nizing new categories of tokens. For each of these, write a suitable set of tests, then add the
necessary code, and run the tests. Consult Appendix A to learn how tests work.
Exercise 2.16. Modify the j--.jj file in the j-- compiler to scan (and ignore) Java multi-
line comments.
Exercise 2.17. Modify the j--.jj file in the j-- compiler to deal with nested Java multi-
line comments, using lexical states and lexical actions.
Exercise 2.18. Re-do Exercise 2.17, but insuring that any nested parentheses inside the
comment are balanced.
Exercise 2.19. Modify the j--.jj file in the j-- compiler to recognize and return all Java
operators.
Exercise 2.20. Modify the j--.jj file in the j-- compiler to recognize and return all Java
reserved words.
Exercise 2.21. Modify the j--.jj file in the j-- compiler to recognize and return Java
double precision literal (returned as DOUBLE_LITERAL ).
Exercise 2.22. Modify the j--.jj file in the j-- compiler to recognize and return all other
literals in Java, for example, FLOAT_LITERAL , LONG_LITERAL , etc.
Exercise 2.23. Modify the j--.jj file in the j-- compiler to recognize and return all other
representations of integers (hexadecimal, octal, etc.).