Warning Documentation is under active development fancy word for incomplete Brainterpreter is an implementation of a toy programming language called What s the implementation of the programming language Well that might be different for real languages But Bauble has the following components Parser parses the source code and produces the AST Compiler compiles the AST into chunks of the bytecode VM virtual machine running compiled chunks Bauble

Bauble is a toy programming language for fun and education Look we even have a nice logo The language is very simple The syntax is c like The list of features is very modest e g it does not support for loops yet but it has enough to be Turing complete For the conference I implemented the Brainfuck interpreter using Bauble You can get the gist of language with this example Complete syntax reference can be found in the syntax section Do not use Bauble in production It s a toy It has its name for a reason let memorySize 256 * 256 let memory 0 memorySize Fixed size array initialized with 0 values let memPointer 0 fun increment let value memory memoryPointer if value < 254 value value 1 else value 0 memory memoryPointer value increment print memory memPointer

The tool suite is created for a TechIn conference talk called The initial idea of the talk was to create a Brainfuck interpreter But it was hard to represent various aspects of parsing using Brainfuck So I decided to create a simple procedural programming language and implement the Brainfuck interpreter using that language That s how the Brainterpreter was created Brainterpreter

Crafting Interpreters by Robert Nystrom is an incredible source of inspiration for creating programming languages Bauble was born from this inspiration In Crafting Interpreters Robert builds a programming language Lox is similar to Bauble but much more robust and complete The book provides two implementations of Lox one in Java and one in C each with its unique approach The Java implementation constructs an AST and executes it using JVM while the C implementation requires building every aspect of the language from the lexer to the virtual machine Brainterpreter is based on the C implementation of Lox It has a different parser implementation that builds an AST while Lox compiles directly from the parser in its C implementation If you re interested in creating programming languages but don t know where to start Crafting Interpreters is a must read Lox