This book is essential reference guide for using a version of ANTLR was rebuilt, with amazing new LL (*) parsing technology, tree construction facilities, StringTemplate code generation template engine, and sophisticated ANTLRWorks GUI development environment. But in fact, programmers usually use parser generators to build translators and interpreters for domain-specific languages such as proprietary data formats, common network protocols, text processing languages, and domain-specific programming language. This book is the definitive guide to using the development environment ANTLRWorks rebuilt ANTLR v3 and describes all features in detail, including the amazing new LL (*) parsing technology, tree construction facilities, StringTemplate code generation template engine, and sophisticated GUI. You'll learn all about ANTLR grammar syntax, grammar resolve ambiguities, parser fault tolerance and error reporting, embedding actions to interpret or translate languages, building intermediate-form trees, extracting information from trees, making the source code, and how to use the ANTLR Java API.