62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
//! Command line interface for the dust programming language.
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use ariadne::Source;
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use clap::Parser;
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use colored::Colorize;
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use std::{fs::read_to_string, io::Write};
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use dust_lang::{context::Context, Interpreter};
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/// Command-line arguments to be parsed.
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#[derive(Parser, Debug)]
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#[command(author, version, about, long_about = None)]
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struct Args {
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/// Dust source code to evaluate.
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#[arg(short, long)]
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command: Option<String>,
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/// Location of the file to run.
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path: Option<String>,
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}
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fn main() {
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env_logger::Builder::from_env("DUST_LOG")
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.format(|buffer, record| {
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let args = record.args();
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let log_level = record.level().to_string().bold();
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let timestamp = buffer.timestamp_seconds().to_string().dimmed();
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writeln!(buffer, "[{log_level} {timestamp}] {args}")
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})
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.init();
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let args = Args::parse();
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let context = Context::new();
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let source = if let Some(path) = &args.path {
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read_to_string(path).unwrap()
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} else if let Some(command) = args.command {
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command
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} else {
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String::with_capacity(0)
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};
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let mut interpreter = Interpreter::new(context);
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let eval_result = interpreter.run(&source);
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match eval_result {
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Ok(value) => {
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if let Some(value) = value {
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println!("{value}")
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}
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}
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Err(errors) => {
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for error in errors {
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error.report().eprint(Source::from(&source)).unwrap();
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}
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}
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}
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}
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