Merge pull request #2012 from rtfeldman/i/1714

Take syntactic sugar into account when reporting errors

compiler/module/src/called_via.rs

@@ -12,6 +12,10 @@ pub enum CalledVia {
 
     /// Calling with a unary operator, e.g. (!foo bar baz) or (-foo bar baz)
     UnaryOp(UnaryOp),
+
+    /// This call is the result of desugaring string interpolation,
+    /// e.g. "\(first) \(last)" is transformed into Str.concat (Str.concat first " ") last.
+    StringInterpolation,
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]

compiler/module/src/lib.rs

@@ -2,10 +2,10 @@
 // See github.com/rtfeldman/roc/issues/800 for discussion of the large_enum_variant check.
 #![allow(clippy::large_enum_variant, clippy::upper_case_acronyms)]
 
+pub mod called_via;
 pub mod ident;
 pub mod low_level;
 pub mod module_err;
-pub mod operator;
 pub mod symbol;
 
 #[macro_use]