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use std::{fmt::Debug, process, time::Instant};
use clap::{Parser, ValueEnum};
use rebel_parse::{recipe, tokenize};
#[derive(Clone, Debug, PartialEq, Eq, ValueEnum)]
enum Rule {
Tokenize,
Recipe,
RecipeStmt,
Body,
BodyStmt,
Expr,
}
#[derive(Clone, Debug, Parser)]
struct Opts {
rule: Rule,
input: String,
}
fn main() {
let opts: Opts = Opts::parse();
let input = opts.input.trim();
fn as_debug<'a>(v: impl Debug + 'a) -> Box<dyn Debug + 'a> {
Box::new(v)
}
let start = Instant::now();
let result = tokenize::token_stream(input);
let dur = Instant::now().duration_since(start);
println!("Tokenization took {} µs", dur.as_micros());
let tokens = match result {
Ok(value) => value,
Err(err) => {
println!("{err}");
process::exit(1);
}
};
let start = Instant::now();
let result = match opts.rule {
Rule::Tokenize => Ok(as_debug(tokens)),
Rule::Recipe => recipe::recipe(&tokens).map(as_debug),
Rule::RecipeStmt => recipe::recipe_stmt(&tokens).map(as_debug),
Rule::Body => recipe::body(&tokens).map(as_debug),
Rule::BodyStmt => recipe::body_stmt(&tokens).map(as_debug),
Rule::Expr => recipe::expr(&tokens).map(as_debug),
};
if opts.rule != Rule::Tokenize {
let dur = Instant::now().duration_since(start);
println!("Parsing took {} µs", dur.as_micros());
}
match result {
Ok(value) => {
println!("{value:#?}");
}
Err(err) => {
println!("{err}");
}
};
}
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