Genesis commit

1 files changed, 67 insertions, 0 deletions

diff --git a/oryxc/src/errors.rs b/oryxc/src/errors.rs
new file mode 100644
index 0000000..b3e6013
--- /dev/null
+++ b/oryxc/src/errors.rs
@@ -0,0 +1,67 @@
+use std::ffi::{
+	OsStr,
+	OsString,
+};
+use std::fmt::Display;
+use std::ops::Deref;
+use std::path::Path;
+use std::sync::OnceLock;
+use std::{
+	env,
+	process,
+};
+
+pub fn progname() -> &'static OsString {
+	static ARGV0: OnceLock<OsString> = OnceLock::new();
+	return ARGV0.get_or_init(|| {
+		let default = OsStr::new("oryxc");
+		let s = env::args_os().next().unwrap_or(default.into());
+		return Path::new(&s).file_name().unwrap_or(default).to_os_string();
+	});
+}
+
+#[macro_export]
+macro_rules! warn {
+	($err:expr, $fmt:literal, $($arg:tt)*) => {{
+        use crate::errors::progname;
+		let _ = eprintln!("{}: {}: {}", progname().display(),
+            format_args!($fmt, $($arg)*), $err);
+	}};
+
+	($err:expr, $fmt:literal) => {{
+		warn!($err, $fmt,);
+	}};
+
+	($err:expr) => {{
+        use crate::errors::progname;
+		let _ = eprintln!("{}: {}", progname().display(), $err);
+	}};
+}
+
+#[macro_export]
+macro_rules! err {
+	($err:expr, $fmt:literal, $($arg:tt)*) => {{
+        use crate::warn;
+        warn!($err, $fmt, $($arg)*);
+		std::process::exit(1);
+	}};
+
+	($err:expr, $fmt:literal) => {{
+		err!($err, $fmt,);
+	}};
+
+	($err:expr) => {{
+        use crate::warn;
+        warn!($err);
+		std::process::exit(1);
+	}};
+}
+
+pub fn err_at_position<T, S>(filename: T, s: S) -> !
+where
+	T: Deref<Target = OsStr>,
+	S: Display,
+{
+	eprintln!("{}: \x1b[31;1mError:\x1b[0m {}", filename.display(), s);
+	process::exit(1);
+}