TinyBASIC implementation. Great language to practice with Racket's lex/yacc clone.
- http://www.ittybittycomputers.com/IttyBitty/TinyBasic/TBuserMan.htm
- https://en.wikipedia.org/wiki/Tiny_BASIC
raco pkg install tinybasic
Run tinybasic or racket -l tinybasic to start the tinybasic monitor. To
run a program and quit, try tinybasic --batch yourprogram.bas. Drop the
--batch if you wish to load the program then start the tinybasic monitor.
Alternately, you may also use Racket's #lang facility:
#lang tinybasic
100 PRINT "Hello, world!"
120 END
(Run this via racket your-hashlang-tinybasic-file.bas.)
It mostly works.
INPUTshould prompt with?if output line is emptyracket -l tinybasic/examples/fizzbuzz --replshould open a tinybasic monitor (I think this should also fix DrRacket interaction.)
Exit TinyBasic monitor.
Example:
REM Exits tinybasic.rkt and returns control back to shell.
BYELoad a line-numbered program from a file. Direct-mode lines (ones without a line number) are ignored.
Example:
REM Loads examples/hello.bas.
LOAD "examples/hello.bas"Save a program to a file.
Example:
REM Saves hello.bas
10 PRINT "Hello, world!"
SAVE "examples/hello.bas"Run Racket code with access to the interpreter's variables.
This escape hatch gives the user a way to call native Racket code. This means you could in theory write useful, modern applications in tinybasic. Pretty cool eh?
10 REM Greet the user
20 RACKET (printf "Hello, ~a. How are you today?\n" (or (getenv "USER") (getenv "USERNAME")))
30 ENDIf the user set!'s a single upper case variable, it will copy over to the
Tinybasic environment. Otherwise, if the user set!'s a single lower case
variable, it will copy over. Otherwise the original value is copied over
(default is 0).
There are examples in the tinybasic-examples package. If you use org-mode, one can use ob-basic.el contained in the tinybasic-examples package to evaluate tinybasic programs in org-mode src blocks.
tinybasic.rkt is covered under MIT/X.
Files in examples/nonfree/ and TBuserMan.txt are of unknown license - consider all rights reserved.