Interpreter

The Interpreter is the final stage of the PooLang pipeline. It takes the Abstract Syntax Tree (AST) produced by the Parser and executes the logic it represents.

How it works

PooLang uses a Tree-Walking Interpreter. It traverses the AST recursively, "visiting" each node and performing the corresponding action in the real world (e.g., adding two numbers, updating a variable in memory).

Environment and State

The interpreter maintains an Environment (or Scope) which maps variable names to their current values. When you declare a variable with poo, it is added to the current environment.

Implementation

The interpreter is located in src/interpreter.rs. Key features include:

• Value system: Defines how integers, floats, and strings are stored in memory.
• Scope management: Handles nested scopes for loops and functions.
• Runtime Errors: Detects issues like dividing by zero or using an undefined variable.