Homework 1

Goal

Implement the lexical analysis program on pp. 34-35. Due October 12 before class.

Getting Started

Please add the following lines to your .cshrc file:

setenv PATH /local/apps/jdk/bin:$PATH
setenv JAVA_HOME /local/apps/jdk/
setenv CLASSPATH .:/local/apps/Java:/local/apps/Java/CUP:/local/apps/jdk/lib/classes.zip

Help material

You will need to refer to the following:

Chapter 2 of the book.
The Appendix:
Clarification:On p.527, third line:
```
\^c    The control character c, for any appropriate c.
\ddd   The single character with ASCII code ddd (3 decimal digits)
```
In the first line, the appropriate control characters are the ones in the range [64,95] inclusive. In the second line, the ASCII code must be in the range [0,255] inclusive.
The JLex documentation.
The Java Core API
You might also need some book on Java.
Help files in the directory lexer. These are slightly different from the ones Appel provides.
A test file tests/t1.tig. Make sure your program gives sensible output on that test file. Devise other test files as appropriate.

Deliverables

Due date is October 12 before class. Turn in your file

Tiger.lex

and any documentation or test files you want by running the following command from your working directory:

> /cs/classes/cis461/submit Tiger.lex ...

If you change your mind, you can delete submitted files by running:

> /cs/classes/cis461/usubmit file1 file2 ...

The "submit" and "usubmit" commands do not accept directory arguments.

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sabry@cs.uoregon.edu