Understanding the Interpreter Design Pattern in Kotlin: A Comprehensive Guide

amol pawar
softAai Blogs
Published in
5 min readNov 26, 2024

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When it comes to design patterns, some are pretty straightforward, while others might seem a bit more complicated at first glance. One such pattern is the Interpreter design pattern. While it may sound like something you’d use only in very specific contexts, the Interpreter pattern can actually be quite handy when you’re dealing with languages or grammars, like when building parsers or evaluators. Today, I’ll walk you through the Interpreter pattern in a simple and approachable way, using Kotlin.

So, what exactly is the Interpreter design pattern? Let’s dive in!

What is the Interpreter Design Pattern?

The Interpreter design pattern is used to define a representation for a grammar of a language and provide an interpreter that uses the representation to interpret sentences in the language. In short, it’s a way to evaluate statements or expressions based on a predefined set of rules or grammar.

It’s particularly useful when you need to evaluate strings that follow a specific format, like mathematical expressions, SQL queries, or even programming languages.

Structure of Iterpreter Design Pattern

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