Work on integrating error reporting using the ariadne crate

src/builtin/cd.rs

@@ -1,6 +1,8 @@
+use ariadne::{Fmt, Label, Span};
+
 use crate::{
   jobs::JobBldr,
-  libsh::error::{ShErr, ShErrKind, ShResult},
+  libsh::error::{ShErr, ShErrKind, ShResult, next_color},
   parse::{NdRule, Node},
   prelude::*,
   state::{self},
@@ -10,6 +12,7 @@ use super::setup_builtin;
 
 pub fn cd(node: Node, job: &mut JobBldr) -> ShResult<()> {
   let span = node.get_span();
+	let src = span.source();
   let NdRule::Command {
     assignments: _,
     argv,
@@ -17,22 +20,28 @@ pub fn cd(node: Node, job: &mut JobBldr) -> ShResult<()> {
   else {
     unreachable!()
   };
+	let cd_span = argv.first().unwrap().span.clone();
 
   let (argv, _) = setup_builtin(Some(argv), job, None)?;
   let argv = argv.unwrap();
 
-  let new_dir = if let Some((arg, _)) = argv.into_iter().next() {
-    PathBuf::from(arg)
+  let (new_dir,arg_span) = if let Some((arg, span)) = argv.into_iter().next() {
+    (PathBuf::from(arg),Some(span))
   } else {
-    PathBuf::from(env::var("HOME").unwrap())
+    (PathBuf::from(env::var("HOME").unwrap()),None)
   };
 
   if !new_dir.exists() {
-    return Err(ShErr::full(
-      ShErrKind::ExecFail,
-      format!("cd: No such file or directory '{}'", new_dir.display()),
-      span,
-    ));
+		let color = next_color();
+		let mut err = ShErr::new(
+			ShErrKind::ExecFail,
+			span.clone(),
+		).with_label(src.clone(), Label::new(cd_span.clone()).with_color(color).with_message("Failed to change directory"));
+		if let Some(span) = arg_span {
+			let color = next_color();
+			err = err.with_label(src.clone(), Label::new(span).with_color(color).with_message(format!("No such file or directory '{}'", new_dir.display().fg(color))));
+		}
+		return Err(err);
   }
 
   if !new_dir.is_dir() {