Crate basic_dsl 

BASIC DSL

A procedural macro crate that provides a BASIC interpreter DSL embedded in Rust.

Usage

use basic_dsl::basic;

basic! {
    10 FOR I = 1 TO 5
    20 PRINT I
    30 NEXT I
    40 PRINT "DONE"
    50 END
}

The macro supports classic BASIC programming constructs:

Control Flow

• FOR…NEXT loops: FOR variable = start TO end [STEP increment] and NEXT [variable]
• Conditional jumps: IF condition THEN GOTO line
• Unconditional jumps: GOTO line
• Program termination: END

Variables and Expressions

• Variable assignment: LET variable = expression
• Arithmetic: +, -, *, /
• Comparisons: <, <=, =, >=, >
• Numbers and string literals: 42, "Hello World"

Input/Output

• Printing: PRINT expression (numbers and strings)

Advanced Features

• Nested loops: Full support for nested FOR…NEXT constructs
• Expression evaluation: Complex arithmetic and string handling
• Runtime error checking: Proper error handling for invalid operations

Macros

basic

Main entry point for the BASIC DSL macro.