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use std::{
env, fs,
path::{Path, PathBuf},
};
use anyhow::{Context, Result};
use ariadne::{Color, Fmt, Label, Report as CliReport, ReportKind as CliReportKind, Source};
use lib::{Report, LINTS};
use rnix::WalkEvent;
fn analyze(file: &str) -> Result<Vec<Report>> {
let parsed = rnix::parse(file).as_result()?;
Ok(parsed
.node()
.preorder_with_tokens()
.filter_map(|event| match event {
WalkEvent::Enter(child) => LINTS.get(&child.kind()).map(|rules| {
rules
.iter()
.filter_map(|rule| rule.validate(&child))
.collect::<Vec<_>>()
}),
_ => None,
})
.flatten()
.collect())
}
fn print_report(report: Report, file_src: &str, file_path: &Path) -> Result<()> {
let src_id = file_path.to_str().unwrap_or("<unknown>");
let offset = report
.diagnostics
.iter()
.map(|d| d.at.start().into())
.min()
.unwrap_or(0usize);
report
.diagnostics
.iter()
.fold(
CliReport::build(CliReportKind::Warning, src_id, offset),
|cli_report, diagnostic| {
let range = {
let at = diagnostic.at;
at.start().into()..at.end().into()
};
cli_report.with_label(
Label::new((src_id, range))
.with_message(diagnostic.message.as_str().fg(Color::Yellow)),
)
},
)
.finish()
.print((src_id, Source::from(file_src)))
.context("failed to print report to stdout")
}
fn _main() -> Result<()> {
let args = env::args();
for (file_src, file_path, reports) in args
.map(|s| PathBuf::from(&s))
.filter(|p| p.is_file())
.filter_map(|path| {
let s = fs::read_to_string(&path).ok()?;
analyze(&s)
.map(|analysis_result| (s, path, analysis_result))
.ok()
})
{
for r in reports {
print_report(r, &file_src, &file_path)?
}
}
Ok(())
}
fn main() {
match _main() {
Err(e) => eprintln!("{}", e),
_ => {}
}
}
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