Your assignment will be submitted using github. Only the "main" branch of your repository will be graded. Please refer to the documentation requirements posted on iLearn. The organization and appearance of this document are critical. Please use spelling and grammar checkers $-$ your ability to communicate about software and technology is almost as important as your ability to write software!

Your program will be tested using unit tests, manual compilation, and execution on the command line. To compile and execute, I will use the following steps:

# Change into the repository directory

cd your$-$repository$-$name

#Delete all lasail types $-$selete not be present in your repository, but just in case$)$

$*$ Delete ame i files type red ars will be replaced with a clean copy$)$

# Delete the tests directory $($tests will be replaced with a clean copy$)$

rm $-$rf tests

# CompEte and EXeCute COMPLEM YOUR XECUTION; PREVIOUS STEPS ARE FOR MY TESTING

Java tools. Compilerfoolss Java

# Compile and execute the Lexer with one or more test X files

javac lexer$/$Lexer$.$java

java lexer.Lexer path$/$to$/$test$/$file$.$x

Requirements

You will extend the Lexer to process additional tokens and improve its output.

Requirement $1$

The current implementation of Lexer reads a hardcoded file. Lexer must be updated to take a path to a file as a command line argument:

java lexer.Lexer sample$\_$files$/$simple$.$x

If a filename is not supplied, a usage instruction should be displayed $($in this snippet, the $>$ character indicates the shell prompt and execution command; it is not a part of the required output$)$:

usage: Java iexer Lexer filenane. x

Requirement $2$

Our compiler must be updated to be able to process additional tokens. The new tokens must be added to the tokens.txt file, and the CompilerTools run to re$-$generate the SymbolTable class and the TokenKind enumeration. Remember from the lecture that we do not want to $($must not$)$ use regular expressions.

Symbolic Constant

Lexeme

Description of Token

Greater

GreaterEqual

Number

num

This is the type keyword used to declare a variable of type num

NumberLit

$$num$>$

Any $$ num $>$ literal, which is one or more numbers followed by a decimal point, followed by one or more numbers:

Valid examples:

$1\mathrm{.}2$

$123\mathrm{.}546$

$213123123123123\mathrm{.}0$

Invalid examples: $21.$

CharType

character

This is the type keyword used to declare a variable of type character

CharLit

$$ character$>$

Any $$ character$>$ literal, which is a double quote, followed by any ASCIl E$,$ character, followed by a double quote:

Valid examples:

$"$a$""$It$"$

Invalid examples: $"$a $"$bb$"$

From

from

Keyword

To

to

Keyword

Step

step

Keyword

Requirement $3$

Requirement $4$

The Token class must be updated to include the source file's line number where a token was found.