my-basic

MY-BASIC is a tiny cross-platform easy extendable BASIC interpreter written in pure C with about 7000 lines of source code. Its grammar is similar to structured BASIC. It is aimed to be either an embeddable scripting language or a standalone interpreter. The core is pretty light; all in a C source file and an associated header file. You can combine MY-BASIC with an existing C, C++, Objective-C, etc. project easily, scripting driven can make your projects more powerful, elegant and neat.

Main features

It is free
Written in clean ANSI C, source code portable
With most common BASIC syntax
Small (within memory usage less than 128KB) and fast
Case-insensitive tokenization
Integer, float point, string, boolean, user defined data types with array support, etc.
Structured IF-THEN-ELSEIF-ELSE-ENDIF support
Structured FOR-TO-STEP-NEXT/WHILE-WEND/DO-UNTIL support
Structured user costomized sub routine definition by DEF/ENDDEF support
GOTO/GOSUB-RETURN support
Standard numeric functions
Standard string functions
Debug APIs
High expansibility, easy to use APIs, easy to write customized scripting interfaces
It's able to use it as a standalone interpreter, or integrate it with existing C, C++, Objective-C, etc. projects
It's able to learn how to build an interpreter from scratch from MY-BASIC
It's able to build your own dialect based on MY-BASIC
More features/modules under developing

Interpreter workflow diagram

Installation

Use standalone interpreter binary

This repository contains precompiled binaries for Windows and OS X, it's efficient to download it and have a first impressive playground.

To compile an interpreter binary for your own platform, please follow the steps.

Retrieve at least core and shell folders for minimum build
Setup your compile toolchain configuration
Use your compiler to compile core/my_basic.c and shell/main.c, including core/my_basic.h is required for both source files, then link up your own executable

Combine with exist projects

MY-BASIC is cleanly written in a single C source file and an associated header file. Just copy my_basic.c and my_basic.h to your project folder and add them to a build configuration.

You can definitely link with MY-BASIC as a lib as well.

For more details about using MY-BASIC when it's already integrated with exist projects, please see MY-BASIC Quick Reference.

WIKI

References

You can support MY-BASIC development with a donation: