https://github.com/hash3liZer/Syntax-Checker

A Simple Syntax Checker to check for basic errors in a file. Written in C++
https://github.com/hash3liZer/Syntax-Checker

Last synced: about 2 months ago
JSON representation

A Simple Syntax Checker to check for basic errors in a file. Written in C++

• Host: GitHub
• URL: https://github.com/hash3liZer/Syntax-Checker
• Owner: hash3liZer
• License: lgpl-2.1
• Created: 2020-12-17T17:33:33.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2020-12-23T12:27:34.000Z (over 3 years ago)
• Last Synced: 2024-07-08T16:40:11.372Z (2 months ago)
• Language: C++
• Size: 35.2 KB
• Stars: 6
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
Syntax-Checker

A versatile syntax checker written in C++. Checks for issues with keywords and brackets.


  

## Developers



  
Shameer Kashif

  
Mahnam Nasir



## Syntax Check

Its a Semester Project built to correctly parse the `code` file and seperate keywords and brackets and checks for any mistake in the Syntax. Its highly versatile as it also would correctly parse each word or bracket separatly even if all the code is written in a single line. If any of the below condition would be True, the compilter would throw an error: 



  
If Imbalanced Brackets detected .e.g [ [ {] } ]



  
Code doesn't start with the keyword begin



  
Code doesn't end with the keyword end



  


end occurs without a begin



  


endif occurs without an if



  


endfor occurs without an for



  


endwhile occurs without an while



  


elseif occurs without an if



  


else occurs without an if



  


else occurs two times

  
If brackets are not opened correctly like begin{ {if int a; }endif }end





## File Parsing

One the main algorithms built in this project is correctly parsing all the lines given in the file. The code is given below. The following code will accept a string meaning, a line and the line number and separate each word found and the brackets and pass it to another function named `validate`. All this code is available in the syntax.cpp file. 

```c++

void looper(string line, int line_counter) {

    string converter = "";

    for (int i = 0; i < line.length(); i++) {

        if (!isalpha(line[i]) || i + 1 == line.length()) {

           

           if (i + 1 == line.length()) {

               if (isalpha(line[i])) {

               converter += line[i];

               validate(converter, line_counter);

           }

           else {

               validate(converter, line_counter);

               converter = line[i];

               validate(converter, line_counter);

           }

        }

        else {

            validate(converter, line_counter);

            converter = line[i];

            validate(converter, line_counter);

        }

        converter = "";

      }

      else {

          converter += line[i];

      }

   }

}

```

## Compilation

The code was compiled and tested on **Visual Studio Community Version 2019**. However, it would perfectly compile on previous versions as well. Tested upto version `2012`. After compilation you can supply direct file as an argument. If you don't, the program will interactively ask to provide the file: 

  

## Contribution

All code contribution are welcomed.