https://github.com/junaidsalim/lexical_analyzer
This is our Formal Languages and Automata Theory Project. This repo contains Program of Lexical Analyzer for C++ that will tokenize C++ program.
https://github.com/junaidsalim/lexical_analyzer
automata automata-theory cplusplus flex lex lexical-analyzer
Last synced: about 2 months ago
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This is our Formal Languages and Automata Theory Project. This repo contains Program of Lexical Analyzer for C++ that will tokenize C++ program.
- Host: GitHub
- URL: https://github.com/junaidsalim/lexical_analyzer
- Owner: JunaidSalim
- License: mit
- Created: 2024-05-18T09:14:51.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2024-05-20T03:38:17.000Z (about 1 year ago)
- Last Synced: 2025-02-11T13:52:26.051Z (4 months ago)
- Topics: automata, automata-theory, cplusplus, flex, lex, lexical-analyzer
- Language: Lex
- Homepage:
- Size: 3.91 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Lexical Analyzer
This is our Formal Languages and Automata Theory Project. This repository contains a program for a Lexical Analyzer for C++ that will tokenize a C++ program.
## Installation and Usage
1. **Install Flex**
Make sure Flex is installed on your system. You can download it from [Flex's official website](https://github.com/westes/flex) or install it using your package manager.
2. **Add Flex to Environment Variables**
Ensure that the path to the Flex binary is added to your system's environment variables.
3. **Run Flex on the Lexer File**
Use Flex to generate the C source file from the lexer definition file:
```sh
flex lexer.l
```
This command will generate a file named lex.yy.c.
4. **Compile the Generated C File**
Compile the generated C file using GCC (or any C compiler):
```sh
gcc lex.yy.c -o [outputFile]
```
5. **Run the Lexical Analyzer**
Run the compiled executable with an input C++ file to tokenize it:
```sh
./[outputFile] [InputFile]
```
Replace [outputFile] with the name of your executable and [InputFile] with the path to the C++ file you want to tokenize.
The tokens will be printed in the terminal.
## Example
Here's a quick example to demonstrate the steps:
1. Install Flex and add it to your PATH.
2. Create a file named lexer.l with your lexer definitions.
3. Run Flex:
```sh
flex lexer.l
```
4. Compile the generated C file:
```sh
gcc lex.yy.c -o lexer
```
5. Tokenize a C++ file:
```sh
./lexer input.cpp
```
## Contributors
- [Junaid Saleem](https://github.com/JunaidSalim)
- [Muneeb Bin Nasir](https://github.com/JMSNM)