A compiler that checks for errors in a .json file that contains lotterie results from ΟΠΑΠ ΑΕ. The compiler consists of two parts, a lexical analyzer (Flex) and a syntax analyzer (Bison).
The project.l file contains the lexical analyzer code that reads the .json file and produces the tokens that are fed to the syntax analyzer. The project.y file contains the syntax analyzer code that reads the tokens that the lexical analyzer provides and matches them with rules, to finaly conclude that the file contains any errors or not.
After the .json file has been parsed, we get printed the number and the position of the errors, if any occured and the content of the .json file.
To compile the files: $ bison -ydt project.y $ flex project.l $ gcc -o parser.exe y.tab.c lex.yy.c -lfl
e.g. #We check if there are any errors on the file range_result.txt, that contains no errors.
$ ./parser.exe range_result.txt
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#Now we run the parser again for the same file but with some errors.
$ ./parser.exe range_results.txt
Syntax error in line: 1 - column: 647 Syntax error in line: 1 - column: 1396
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