# Custom JSON Lexer and Parser

This project provides a **custom implementation** of a **JSON lexer** and **JSON parser** written in **C#**. The lexer tokenizes JSON strings, and the parser validates and interprets the tokenized input according to the **JSON specification (RFC 8259)**.

## Features

- **Custom Lexer**: Tokenizes JSON strings into meaningful tokens such as objects, arrays, strings, numbers, booleans, and null values.
- **Custom Parser**: Validates the sequence of tokens to ensure they conform to the JSON specification and interprets the JSON structure.
- **Error Handling**: Detects and reports errors such as invalid numbers, control characters in strings, and improperly formatted JSON.
- **C# Implementation**: The entire project is implemented in C#, making it suitable for developers working within the .NET ecosystem.

## Project Structure

- **JsonLexer.cs**: Contains the `JsonLexer` class responsible for tokenizing the JSON input string.
- **JsonParser.cs**: Contains the `JsonParser` class responsible for parsing the list of tokens generated by the lexer.
- **JsonToken.cs**: Contains the `JsonToken` class and the `JsonTokenType` enumeration, which define the structure of a token and the types of tokens that the lexer can generate.
- **Program.cs**: The entry point of the application. It demonstrates how to use the lexer and parser to validate and parse a JSON string.


## Getting Started

### Prerequisites

- **.NET Core SDK**: Make sure you have .NET Core SDK installed on your machine. You can download it from the official [.NET website](https://dotnet.microsoft.com/download).

### Running the Project

1. **Clone the Repository**: Clone this repository to your local machine.

   ```bash
   git clone https://github.com/your-username/json-lexer-parser.git

2. **Navigate to the Project Directory**:
    ```bash
    cd json-parser

3. **Run the project**:
    ```bash
    dotnet run