add reference

1 files changed, 17 insertions, 8 deletions

diff --git a/readme.rst b/readme.rst
index b3d8f09..591e91e 100644
--- a/readme.rst
+++ b/readme.rst
@@ -6,21 +6,30 @@ Psi is a new programming language designed with simplicity, flexibility, and per
 Features
 --------
 
-- **Lexer Module**: The lexer module is responsible for converting the source code into a sequence of tokens. It recognizes the basic elements of the language such as identifiers, keywords, operators, and literals.
+- `Lexer Module`_: The lexer module is responsible for converting the source code into a sequence of tokens. It recognizes the basic elements of the language such as identifiers, keywords, operators, and literals.
 
-- **Parser Module**: The parser module takes the sequence of tokens generated by the lexer module and transforms it into an Abstract Syntax Tree (AST). The AST is a tree-like data structure that represents the source code in a way that is closer to the syntactic structure of the programming language.
+- `Parser Module`_: The parser module takes the sequence of tokens generated by the lexer module and transforms it into an Abstract Syntax Tree (AST). The AST is a tree-like data structure that represents the source code in a way that is closer to the syntactic structure of the programming language.
 
-- **Built-in Types Module**: This module defines the built-in types of the Psi language, such as lists and dictionaries. It provides functions for creating and manipulating instances of these types.
+- `Built-in Types Module`_: This module defines the built-in types of the Psi language, such as lists and dictionaries. It provides functions for creating and manipulating instances of these types.
 
-- **Error Handling Module**: This module provides a mechanism for catching and handling errors during runtime. It defines a set of exception classes and functions for throwing and catching these exceptions.
+- `Error Handling Module`_: This module provides a mechanism for catching and handling errors during runtime. It defines a set of exception classes and functions for throwing and catching these exceptions.
 
-- **Execution Environment Module**: This module defines the execution environment of the Psi language, including the scope and lifecycle of variables. It provides functions for defining and looking up variables in the execution environment.
+- `Execution Environment Module`_: This module defines the execution environment of the Psi language, including the scope and lifecycle of variables. It provides functions for defining and looking up variables in the execution environment.
 
-- **Interpreter Module**: The main task of this module is to traverse the AST and perform the corresponding operations in the execution environment.
+- `Interpreter Module`_: The main task of this module is to traverse the AST and perform the corresponding operations in the execution environment.
 
-- **Mathematics Foundation Module**: This module provides basic mathematical functions and constants, such as addition, subtraction, multiplication, and division.
+- `Mathematics Foundation Module`_: This module provides basic mathematical functions and constants, such as addition, subtraction, multiplication, and division.
 
-- **Documentation Module**: This module uses reStructuredText and Sphinx to build the documentation, providing API interface descriptions and usage examples.
+- `Documentation Module`_: This module uses reStructuredText and Sphinx to build the documentation, providing API interface descriptions and usage examples.
+
+.. _`Lexer Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/lexer.py
+.. _`Parser Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/parser.py
+.. _`Built-in Types Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/type.py
+.. _`Error Handling Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/exception.py
+.. _`Execution Environment Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/execution.py
+.. _`Interpreter Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/interpreter.py
+.. _`Mathematics Foundation Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/mathematics.py
+.. _`Documentation Module`: https://github.com/HydroRoll-Team/psi/blob/main/docs
 
 Getting Started
 ---------------