Write function for lyneate integration

src/error/mod.rs

@@ -7,6 +7,7 @@ pub(crate) mod rw_lock_error;
 mod syntax_error;
 mod validation_error;
 
+use lyneate::Report;
 pub use runtime_error::RuntimeError;
 pub use syntax_error::SyntaxError;
 pub use validation_error::ValidationError;
@@ -28,6 +29,34 @@ pub enum Error {
     Language(LanguageError),
 }
 
+impl Error {
+    /// Create a pretty error report with `lyneate`.
+    ///
+    /// The `source` argument should be the full source code document that was
+    /// used to create this error.
+    pub fn create_report(&self, source: &str) -> String {
+        let markers = if let Error::Syntax(SyntaxError::InvalidSource { source, position }) = self {
+            vec![(
+                position.start_byte..position.end_byte,
+                format!(
+                    "Invalid syntax from ({}, {}) to ({}, {}).",
+                    position.start_row,
+                    position.start_column,
+                    position.end_column,
+                    position.end_row
+                ),
+                (255, 100, 100),
+            )]
+        } else {
+            vec![]
+        };
+
+        let report = Report::new_byte_spanned(source, markers);
+
+        report.display_str()
+    }
+}
+
 impl From<SyntaxError> for Error {
     fn from(error: SyntaxError) -> Self {
         Error::Syntax(error)

src/error/syntax_error.rs

@@ -1,6 +1,5 @@
 use std::fmt::{self, Display, Formatter};
 
-use lyneate::Report;
 use serde::{Deserialize, Serialize};
 use tree_sitter::{Node as SyntaxNode, Point};
 
@@ -63,25 +62,6 @@ impl From<RwLockError> for SyntaxError {
 
 impl Display for SyntaxError {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        if let SyntaxError::InvalidSource { source, position } = self {
-            let report = Report::new_char_spanned(
-                &source,
-                [(
-                    position.start_byte..position.end_byte,
-                    format!(
-                        "Invalid syntax from ({}, {}) to ({}, {}).",
-                        position.start_row,
-                        position.start_column,
-                        position.end_column,
-                        position.end_row
-                    ),
-                    (255, 100, 100),
-                )],
-            );
-
-            f.write_str(&report.display_str())
-        } else {
-            write!(f, "{self:?}")
-        }
+        todo!()
     }
 }

src/main.rs

@@ -113,7 +113,7 @@ fn main() {
                 println!("{value}")
             }
         }
-        Err(error) => eprintln!("{error}"),
+        Err(error) => eprintln!("{}", error.create_report(&source)),
     }
 }