Build Your Own Programming Language A programmer's guide to designing compilers, interpreters, and DSLs

Written by the creator of the Unicon programming language, this book will show you how to implement programming languages to reduce the time and cost of creating applications for new or specialized areas of computing
Key Features
Reduce development time and solve pain points in your application domain by building a custom programming languageLearn how to create parsers, code generators, file readers, analyzers, and interpretersCreate an alternative to frameworks and libraries to solve domain-specific problems
Book Description
The need for different types of computer languages is growing rapidly and developers prefer creating domain-specific languages for solving specific application domain problems. Building your own programming language has its advantages. It can be your antidote to the ever-increasing size and complexity of software. However, creating a custom language isn't easy.
In this book, you'll be able to put the knowledge you gain to work in language design and implementation. You'll implement the frontend of a compiler for your language, including a lexical analyzer and parser. The book covers a series of traversals of syntax trees, culminating with code generation for a bytecode virtual machine. Moving ahead, you'll learn how domain-specific language (DSL) features are often best represented by operators and functions that are built into the language, rather than library functions. The book concludes by showing you how to implement garbage collection, including reference counting and mark-and-sweep garbage collection. Throughout the book, Dr. Jeffery weaves in his experience of building the Unicon programming language to give better context to the concepts, while providing relevant examples in Unicon and Java.
By the end of this book, you'll be able to build and deploy your own domain-specific languages, capable of compiling and running programs.
What you will learn
Perform requirements analysis for the new language and design language syntax and semanticsWrite lexical and context-free grammar rules for common expressions and control structuresDevelop a scanner that reads source code and generate a parser that checks syntaxBuild key data structures in a compiler and use your compiler to build a syntax-coloring code editorImplement a bytecode interpreter and run bytecode generated by your compilerWrite tree traversals that insert information into the syntax treeImplement garbage collection in your language
Who this book is for
This book is for software developers interested in the idea of inventing their own language or developing a domain-specific language. Computer science students taking compiler construction courses will also find this book highly useful as a practical guide to language implementation to supplement more theoretical textbooks. Intermediate-level knowledge and experience working with a high-level language such as Java or the C++ language are expected to help you get the most out of this book.
Table of Contents
Why Build Another Programming LanguageProgramming Language DesignScanning Source CodeParsingSyntax TreesSymbol TablesChecking Base TypesChecking Types on Arrays, Method Calls, and Structure AccessesIntermediate Code GenerationSyntax Cloning in an IDEBytecode InterpretersGenerating BytecodeNative Code GenerationImplementing Operators and Built-In FunctionsDomain Control StructuresGarbage CollectionFinal ThoughtsAppendix A - Unicon Essentials


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