Please provide a complete code for this. Each and every code file with full execution!

Requirement specifications

Implement a scanner for the provided lexical definitions, a part of the front$-$end of the compiler project. The scanner will extract tokens from the input source and pass them along, one token at a time.

The scanner is embedded and thus it will return one token every time it is called by the parser. Since the parser is not available yet, we will use a tester to visualize and test the produced tokens. Avoid generating a file with all tokens, or even a container with all tokens, just produce one token at a time upon a call.

$-$ Tokens dont have to be separated by white spaces except when needed to prevent incorrect tokes $($this will need FSA implementation or something similar$).$ For example, assuming ID starts with a letter

$"1+$x$"$ doesnt need white spaces to figure this is integer followed by operator followed by ID

$($In option $1$ above this would be an error because a token $"1+$x$"$ doesnt match any token definitions$)"$x y$"$ which is ID followed by ID must have the white space or otherwise it would be just one ID $"$xy$"$

You must have the README.txt file with your submission $($in the submission directory, spelled exactly as stated$)$ stating on the first line which option you are using: $1$ or $2.$ If the information is missing, the project will be graded under option $1.$

Implement a token as a triplet $\{$tokenID$,$ tokenInstance, line#$\}($or pair if not processing line numbers$).$

Dont forget EOFtk $($end of file token$)$ token to be generated at the end of processing

Implement the scanner in a separate file with basename "scanner"

For testing purposes, the scanner will be tested using a testing driver implemented in the the same scanner file or in a file with basename "testScanner". You need to implement your own tester and include as a part of the project. This tester is a simple function:

call the scanner, once for each single token, until it gets the EOFtk

for each received token, display the token to the screen, one per line, including information $($descriptive$)$ on what token class, what token instance $($if the token class includes more token instances$)$ and what line $($if processed$).$

Here is a pseudocode for the tester

token$=$scanner$()$; $//$ get first token after any necessary prep steps if any

while $($true$)\{$

$//$print line number $($if processing, space, descriptive token, space, token instance $($string$),$

if $($token $==$ EOFTk$)$

break;

token$=$scanner$()$;

$\}$

Invocation

scanner $[$file$]$