Assignment 5 – Symbols
Dean Zeller: CS380
Assignment Due: Friday, September 27th by 5:00 P.M.
10 Points
For the fifth assignment, you are to add to the functionality of Assignment 3 by generating tokens for reserved words and
user-defined symbols as well as literals and operators for a Small source code file. Assign a unique Internal Compiler
Code (ICC) to every symbol, and display the token list, literal table, and symbol table at the end of the source code
listing. Upon completion of the compilation, print a list of all tokens generated, 25 per line. Your ICC must be
significant for at least 5 characters of the symbol name.
Tokens
Num
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20-27
Symbol
Error
=
,
[
]
;
{
}
:
(
)
+
*
/
->
<
==
<=
.
28
29
30
31
32
33
34
35-41
else
goto
if
int
read
while
write
42-299
300-399
Explanation
Syntax error
Equal Sign
Comma
Left Bracket
Right Bracket
Semicolon
Left Brace
Right Brace
Colon
Left Parenthesis
Right Parenthesis
Plus
Minus
Times
Divide
Assignment
Less Than Test
Equality Test
Less Than or Equal To Test
End of Program
(reserved for extensions)
(reserved for extensions)
User defined symbols
Literal values
Errors Detected:
Error 1 – EOF read, no end of program operator (.)
Error 2 – Illegal operator
Error 3 – Literal too large
Error 4 – Illegal digit in literal
Error 5 – Literal table full
Error 6 – Symbol table full
Grading
Correctness and Design
Basically, did the program generate the proper sequence of tokens and check for the appropriate errors. You
will also be graded on the object oriented design in your program.
Documentation, Style, and Appearance
Every program method must have a block of documentation describing the method. There must also be a class
documentation giving brief descriptions all methods within the class. Use the Stack.java handout as a
guide for what is expected. The only programming style required is the correct use if indenting blocks of code
and the use of blank lines to separate logical chunks of code. Include your printouts in a neat and organized
portfolio.
Testing
You must thoroughly test your code to ensure it works correctly. If your code was not tested enough to
demonstrate that everything works, I will assume it does not work and grade accordingly. Test your compiler at
least twice. For the first test, use the sample program from the previous assignments. For the second test, create
a program of your own that uses most of the Small language functions. The output generated by your program
should contain the tokens generated for each line, plus the list of all tokens for the program. Following the
source code listing and token list, display the literal table and the symbol table. You do not need to test for
errors 5 and 6 in your program, but you must program them. On your source code listing, label where this
testing is completed.
Turning in your assignment
Add the following printouts to your portfolio:
 This assignment sheet
 Documented source code, with Errors 5 and 6 labeled or highlighted
 Test-runs (2)