Large restructure

Files were moved to be better organised, error messages were changed to
be more general, and a Compiler type was added to the library.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/locators/source.rs b/src/locators/source.rs
index 7e5abd2..15a0809 100644
--- a/src/locators/source.rs
+++ b/src/locators/source.rs
@@ -19,8 +19,16 @@ impl SourceSpan {
     }
 
     /// Wrap this source span around a child source span.
-    pub fn wrap(mut self, source: SourceSpan) -> Self {
-        self.child = Some(Box::new(source)); self
+    pub fn wrap(&self, child: impl Into<SourceSpan>) -> Self {
+        let mut new = self.clone();
+        new.child = Some(Box::new(child.into()));
+        return new;
+    }
+}
+
+impl From<&SourceSpan> for SourceSpan {
+    fn from(source: &SourceSpan) -> Self {
+        source.clone()
     }
 }