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Add command line interface to run programs

This commit is contained in:
Sebastian Lohff 2022-01-03 16:53:55 +01:00
parent de0d20b8f1
commit a2fac3c87e
3 changed files with 275 additions and 4 deletions
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240
Cargo.lock generated
View File

@ -2,6 +2,246 @@
# It is not intended for manual editing.
version = 3
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1
Cargo.toml
View File

@ -6,3 +6,4 @@ edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
clap = { version = "3.0.0-rc.9", features = ["derive"] }

38
src/main.rs
View File

@ -1,3 +1,5 @@
use clap::Parser;
fn check_brainfuck(prog: &str) -> bool {
/*
@ -122,14 +124,42 @@ fn run_brainfuck(prog: &str, debug: bool) {
}
}
/// Brainfuck interpreter in RUST!
#[derive(Parser, Debug)]
#[clap(about, version, author)]
struct Args {
/// Program to run (as string)
#[clap(short, long)]
program: Option<String>,
/// File to read program from
#[clap(short, long)]
file: Option<String>,
/// Debug output
#[clap(short, long)]
debug: bool,
}
fn main() {
println!("Welcome to rust BF!");
//let prog = "xxx]]";
let prog = "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.";
if ! check_brainfuck(prog) {
let args = Args::parse();
let prog;
if let Some(arg_prog) = args.program {
prog = arg_prog;
} else if let Some(file) = args.file {
prog = std::fs::read_to_string(file).unwrap().trim().into();
} else {
println!("Either give me a program or a file to run");
return;
}
if ! check_brainfuck(&prog) {
println!("Invalid program, aborting");
return;
}
run_brainfuck(prog, false);
run_brainfuck(&prog, args.debug);
}