feat: 实现 parser crate

crates/oxide_parser/src/error.rs

@@ -0,0 +1,30 @@
+use std::fmt;
+
+#[derive(Debug, Clone)]
+pub struct OxideError {
+    pub message: String,
+    pub span: (usize, usize),
+}
+
+impl fmt::Display for OxideError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{} at {:?}", self.message, self.span)
+    }
+}
+
+impl std::error::Error for OxideError {}
+
+impl From<oxc_diagnostics::OxcDiagnostic> for OxideError {
+    fn from(diag: oxc_diagnostics::OxcDiagnostic) -> Self {
+        let span = diag
+            .labels
+            .clone()
+            .and_then(|labels| labels.first().map(|l| (l.offset() as usize, (l.offset() + l.len()) as usize)))
+            .unwrap_or((0, 0));
+
+        OxideError {
+            message: diag.message.to_string(),
+            span,
+        }
+    }
+}