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Building Your Own Programming Language

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Learn the essential parts of programming language design! Through creating a new programming language, you’ll learn how to break down a program into its necessary elements: first into tokens through lexical analysis, and then into a traversable abstract syntax tree composed of those tokens. You’ll also write an interpreter, and learn how to transpile your language to JavaScript to make it runnable.

Syllabus

Introduction
Compilers & Interpreters Overview
Course Project
Lexing: Lexical Analysis
Identity Helpers & Lexer
Lexing White Space & Parenthesis
Lexing Numbers & Letters
Lexing Characters & Strings
Internal Representations & ASTs
Steps to Build an AST
Parsing Exercise
Parsing Solution
REPLs
Adding the Standard Library
Evaluating Expressions
Looking Up Identifiers
Adding to the Standard Library
Building the REPL CLI
Running Files from the CLI
Generation & Babel generate
Transformation: Visitor Pattern
Implementing Traverse
Testing Traverse
Transform Practice
Transpiling to JavaScript
Transforming to Variable Declarations
Variable Evaluation
Transpiling Variable Declarations to JavaScript
Parser Generators
Wrapping Up

Taught by

Steve Kinney

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