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https://github.com/adelrizq/a3e

A3E is a simple programming language compiler similar to C++ built using Flex and Bison and a simple GUI for testing.
https://github.com/adelrizq/a3e

a3e bison compiler compiler-design flex lex lexical-analysis semantic-analysis yacc

Last synced: about 2 months ago
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A3E is a simple programming language compiler similar to C++ built using Flex and Bison and a simple GUI for testing.

Host: GitHub
URL: https://github.com/adelrizq/a3e
Owner: AdelRizq
License: mit
Created: 2022-04-16T13:17:46.000Z (almost 3 years ago)
Default Branch: main
Last Pushed: 2022-06-13T02:46:57.000Z (over 2 years ago)
Last Synced: 2023-04-28T08:20:01.877Z (almost 2 years ago)
Topics: a3e, bison, compiler, compiler-design, flex, lex, lexical-analysis, semantic-analysis, yacc
Language: Yacc
Homepage:
Size: 10.3 MB
Stars: 11
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

Awesome Lists containing this project

README

        




![Group 231](https://user-images.githubusercontent.com/40351413/173249976-b40968ad-c8b5-49ea-aac5-9c68692820ef.png)





A3E Compiler




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[![GitHub issues](https://img.shields.io/github/issues/AdelRizq/A3E)](https://github.com/AdelRizq/A3E/issues)

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[![GitHub license](https://img.shields.io/github/license/AdelRizq/A3E)](https://github.com/AdelRizq/A3E/blob/master/LICENSE)











## About The Project

> **A3E** is a simple programming language compiler similar to C++ built using Flex and Bison and a simple GUI for testing.

## Try it  

- clone/download the repo `git clone https://github.com/AdelRizq/A3E`

- Open `gui.exe`

- Select your file and compile

## Build with

- [Flex](http://alumni.cs.ucr.edu/~lgao/teaching/flex.html): Fast Scanner Generator similar to Lex

- [Bison](https://www.gnu.org/software/bison/): Parser Generator similar to Yacc

## Screenshots





## Language Description

### Tokens

1. Variables and constants declaration

   - Define variable: *datatype id = value;*

     - Example: `int a = 5;`

  

   - Define constant: *const datatype id = value;*

     - Example: `const int a = 5;`

  

2. Mathematical and Logical expressions

   - Mathematical operations

     - +, -, *, /, %

   - Logical operations

     - ||, &&, ^, !

     - \>, <, >=, <=

   - Any level of parentheses/complexity.

  

3. Assignment statements

   - Variable = expression

     - Example: `a = 5 * b + c;`

  

4. If-endif, if-else statements



5. While loops



6. For loops



7. Repeat until



8. Switch case



9. Block structures



### Quadruples

|   Quadruple   |                                   Description                                   |

|:-------------:|:-------------------------------------------------------------------------------:|

| ADD s1, s2, R |           Pop the top 2 values of the stack (s1, s2) and push s1 + s2           |

| SUB s1, s2, r |           Pop the top 2 values of the stack (s1, s2) and push s1 - s2           |

| MUL s1, s2, r |           Pop the top 2 values of the stack (s1, s2) and push s1 * s2           |

| DIV s1, s2, r |           Pop the top 2 values of the stack (s1, s2) and push s1 / s2           |

| MOD s1, s2, r |           Pop the top 2 values of the stack (s1, s2) and push s1 % s2           |

| LT s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 < s2 else false  |

| GT s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 > s2 else false  |

| LE s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 <= s2 else false |

| GE s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 >= s2 else false |

| EQ s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 == s2 else false |

| NE s1, s2, r  | Pop the top 2 values of the stack (s1, s2) and push true if s1 != s2 else false |

|   NOT s1, r   |                Pop the top 2 values of the stack (s) and push !s                |

| AND s1, s2, r |      Pop the top 2 values of the stack (s1, s2) and push true if s1 && s2       |

|OR s1, s2, r|Pop the top 2 values of the stack (s1, s2) and push true if s1 || s2|

|XOR s1, s2, r|Pop the top 2 values of the stack (s1, s2) and push s1 ^ s2|

|PUSH value|Push value to the stack|

|POP dst|Pop the top of the stack in into dst|

|L:|Add label with number num|

|JMP L|Unconditional jump to L|

|JZ L|Jump to L if stack top == 0|

|B:|Add break label with the scope number|

## Contributing

Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are **greatly appreciated**.

1. Fork the Project

2. Create your Feature Branch (`git checkout -b AmazingFeature-Feat`)

3. Commit your Changes (`git commit -m 'Add some AmazingFeature'`)

4. Push to the Branch (`git push origin AmazingFeature-Feat`)

5. Open a Pull Request

## Contributors

- Thanks goes to these awesome people in the team.

  


_{Eman Othman}



_{Adel Rizq}



_{Abdallah Hemdan} 



_{Ahmed Mahboub}


  

 

## License

- This software is licensed under **MIT License**, See [License](https://github.com/AdelRizq/A3E/blob/main/LICENSE) for more information.