clippy: Reduce the size of the Error(s) enums

Author: CohenArthur

error/src/lib.rs

@@ -103,7 +103,9 @@ impl ErrKind {
 pub struct Error {
     kind: ErrKind,
     msg: Option<String>,
-    loc: Option<SpanTuple>,
+    // We box the `SpanTuple` here to reduce the size of the `Error` enum.
+    // This makes clippy happy.
+    loc: Option<Box<SpanTuple>>,
     hints: Vec<Error>,
 }
 
@@ -265,12 +267,15 @@ impl Error {
     // FIXME: Should this really take an Option<Location>?
     #[deprecated]
     pub fn with_opt_loc(self, loc: Option<SpanTuple>) -> Error {
-        Error { loc, ..self }
+        Error {
+            loc: loc.map(Box::new),
+            ..self
+        }
     }
 
     pub fn with_loc(self, loc: SpanTuple) -> Error {
         Error {
-            loc: Some(loc),
+            loc: Some(Box::new(loc)),
             ..self
         }
     }

include_code/src/lib.rs

@@ -74,7 +74,7 @@ pub fn get_final_path(
     base: &Path,
     location: &SpanTuple,
     path: &Path,
-) -> Result<PathBuf, (Error, Error)> {
+) -> Result<PathBuf, Box<(Error, Error)>> {
     // Check the local path first
     let local_err = match load_local_library(base, location, path) {
         Ok(path) => return Ok(path),
@@ -86,7 +86,7 @@ pub fn get_final_path(
         Err(e) => e,
     };
 
-    Err((local_err, home_err))
+    Err(Box::new((local_err, home_err)))
 }
 
 fn get_base(location: &SpanTuple) -> PathBuf {
@@ -123,9 +123,9 @@ impl Visitor for IncludeCtx {
 
         let final_path = match get_final_path(&base, &location, &to_include) {
             Ok(path) => path,
-            Err((e1, e2)) => {
-                e1.emit();
-                e2.emit();
+            Err(errs) => {
+                errs.0.emit();
+                errs.1.emit();
                 return Err(Error::new(ErrKind::Include));
             }
         };

src/error.rs

@@ -91,7 +91,8 @@ impl ErrKind {
 pub struct Error {
     kind: ErrKind,
     msg: Option<String>,
-    loc: Option<SpanTuple>,
+    // Boxing to reduce the error's size to make clippy happy. This will eventually be removed anyway.
+    loc: Option<Box<SpanTuple>>,
     hints: Vec<Error>,
 }
 
@@ -224,7 +225,10 @@ impl Error {
 
     // FIXME: Should this really take an Option<Location>?
     pub fn with_loc(self, loc: Option<SpanTuple>) -> Error {
-        Error { loc, ..self }
+        Error {
+            loc: loc.map(Box::new),
+            ..self
+        }
     }
 
     // Add a hint to emit alongside the error

src/instruction/incl.rs

@@ -118,7 +118,7 @@ impl Incl {
         self.check_base(base)
     }
 
-    pub fn get_final_path(&self, base: &Path) -> Result<PathBuf, (Error, Error)> {
+    pub fn get_final_path(&self, base: &Path) -> Result<PathBuf, Box<(Error, Error)>> {
         // Check the local path first
         let local_err = match self.load_local_library(base) {
             Ok(path) => return Ok(path),
@@ -130,7 +130,7 @@ impl Incl {
             Err(e) => e,
         };
 
-        Err((local_err, home_err))
+        Err(Box::new((local_err, home_err)))
     }
 }
 
@@ -188,9 +188,9 @@ impl TypeCheck for Incl {
 
         let final_path = match self.get_final_path(&base) {
             Ok(path) => path,
-            Err((e1, e2)) => {
-                ctx.error(e1);
-                ctx.error(e2);
+            Err(errs) => {
+                ctx.error(errs.0);
+                ctx.error(errs.1);
                 return Err(Error::new(ErrKind::TypeChecker));
             }
         };