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Simple Toy Language from Understanding Computation

October 11, 2018
javascriptlanguage-semanticsASTexecutioncompilers

This is a Javascript implementation of the toy language from Chapter 2 of "Understanding Computation". It shows execution of expressions demonstrating how programming languages can be built from the ground up.

Language Semantics and Execution

The project implements:

  • Lexical Analysis: Tokenizing the input
  • Parsing: Building an Abstract Syntax Tree (AST)
  • Execution: Evaluating the AST to produce results

This toy language serves as an educational tool to understand how programming languages work under the hood. By implementing a simple language from scratch, you gain insight into:

  • How code is transformed from text to executable instructions
  • The role of ASTs in language interpretation
  • The fundamentals of language design and semantics

Understanding Computation

The book "Understanding Computation" by Tom Stuart provides excellent insights into the theory of computation using practical, hands-on examples. This implementation brings those concepts to life in JavaScript, making them accessible to web developers.

Building toy languages like this helps developers appreciate the complexity hidden beneath the programming languages we use every day, and provides foundational knowledge for anyone interested in compilers, interpreters, or language design.