Make default getcoords() implementation more precise.

EcoJulia · Feb 19, 2019 · d58ff6b · d58ff6b
1 parent 70688c1
commit d58ff6b
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/src/DataTypes.jl b/src/DataTypes.jl
@@ -1,3 +1,4 @@
+using Compat: Nothing
 """
     AbstractThings
 

diff --git a/src/Interface.jl b/src/Interface.jl
@@ -95,7 +95,9 @@ thingnames(asm::AbstractAssemblage, args...) = thingnames(things(asm), args...)
 # accessing cache
 
 # Methods for AbstractPlaces
-getcoords(plc::AbstractPlaces) = plc # Pure places generate their own fake location data
+getcoords(plc::AbstractPlaces{Nothing}) = plc # Pure places generate their own fake location data
+getcoords(plc::AbstractPlaces{<: AbstractLocationData}) =
+    error("function not defined for $(typeof(plc))")
 coordinates(plc::AbstractPlaces) = error("function not defined for $(typeof(plc))")
 
 # Methods for AbstractGrid