Fixed repr to use __tostring metamethod if present.

2 files changed, 8 insertions, 2 deletions

diff --git a/utils.lua b/utils.lua
index 548ce0d..dde056c 100644
--- a/utils.lua
+++ b/utils.lua
@@ -16,7 +16,10 @@ utils = {
     end
     local _exp_0 = type(x)
     if 'table' == _exp_0 then
-      if utils.is_list(x) then
+      local mt = getmetatable(x)
+      if mt and mt.__tostring then
+        return mt.__tostring(x)
+      elseif utils.is_list(x) then
         return "{" .. tostring(table.concat((function()
           local _accum_0 = { }
           local _len_0 = 1
diff --git a/utils.moon b/utils.moon
index eb222fb..c439e8f 100644
--- a/utils.moon
+++ b/utils.moon
@@ -10,7 +10,10 @@ utils = {
     repr: (x, add_quotes=false)->
         switch type(x)
             when 'table'
-                if utils.is_list x
+                mt = getmetatable(x)
+                if mt and mt.__tostring
+                    mt.__tostring(x)
+                elseif utils.is_list x
                     "{#{table.concat([utils.repr(i, true) for i in *x], ", ")}}"
                 else
                     "{#{table.concat(["[#{utils.repr(k, true)}]= #{utils.repr(v, true)}" for k,v in pairs x], ", ")}}"