/basic-interpreter

A simple interpreter for Microsoft BASIC

Primary LanguageJavaScript

Simple BASIC Interpreter

This repository now contains a Node.js project that implements a simple interpreter for BASIC. The interpreter supports executing BASIC programs from a file path provided by the user, interpreting line number prefixed instructions correctly. It supports the following instructions:

  • LET - Assigns the value of a variable. The assignment expression can be an arbitrary expression that includes variables.
  • PRINT - Prints a variable or a string constant.
  • IF...THEN - Evaluates an if expression and then allows printing or goto in the then statement.
  • GOTO - Jumps to the specified line.
  • END - Ends the program.

Running the Interpreter

To run the interpreter with a BASIC program file, use the following command:

node interpreter.js <path_to_basic_program_file>

For example, to execute a sample program, you would run:

node interpreter.js sample.bas

A sample script (sample.bas) is included in the repository to demonstrate simple examples of the supported instructions.