Add location to result from macro method interpretation

spec/compiler/macro/macro_methods_spec.cr

@@ -762,6 +762,10 @@ module Crystal
         assert_macro %({{[1, 2, 3].map { |e| e == 2 }}}), "[false, true, false]"
       end
 
+      it "executes map assigns location" do
+        assert_macro %({{[1].map { |e| e }.filename }}), %("")
+      end
+
       it "executes reduce with no initial value" do
         assert_macro %({{[1, 2, 3].reduce { |acc, val| acc * val }}}), "6"
       end

src/compiler/crystal/macros/interpreter.cr

@@ -376,6 +376,7 @@ module Crystal
         rescue ex
           node.raise ex.message
         end
+        @last.location ||= node.name_location
       else
         # no receiver: special calls
         # may raise `Crystal::TopLevelMacroRaiseException`

src/compiler/crystal/macros/methods.cr

@@ -393,7 +393,7 @@ module Crystal
     def interpret(method : String, args : Array(ASTNode), named_args : Hash(String, ASTNode)?, block : Crystal::Block?, interpreter : Crystal::MacroInterpreter, name_loc : Location?)
       case method
       when "id"
-        interpret_check_args { MacroId.new(to_macro_id) }
+        interpret_check_args { MacroId.new(to_macro_id).at(location) }
       when "stringify"
         interpret_check_args { stringify }
       when "symbolize"