Merge pull request #80 from mhauru/master

A more helpful error message when splatting into @ncon.
Jutho · Jan 22, 2020 · 5880c60 · 5880c60
2 parents b480558 + 0ff4365
commit 5880c60
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/indexnotation/tensormacros.jl b/src/indexnotation/tensormacros.jl
@@ -184,6 +184,9 @@ function _nconmacro(tensors, indices, kwargs = nothing)
     else
         throw(ArgumentError("invalid @ncon syntax"))
     end
+    if any(isa(ta, Expr) && ta.head === :... for ta in tensorargs)
+        throw(ArgumentError("@ncon does not support splats (...) in tensor lists."))
+    end
     conjlist = fill(false, length(tensorargs))
     for i = 1:length(tensorargs)
         if tensorargs[i] isa Expr