fix wrong infer of tableindex

#1831

Author: sumneko

Diff for: script/vm/infer.lua

@@ -555,19 +555,14 @@ function vm.viewKey(source, uri)
             return '[' .. key .. ']'
         end
     end
-    if source.type == 'tableindex' then
+    if source.type == 'tableindex'
+    or source.type == 'setindex' then
         local index = source.index
-        local name = vm.getKeyName(index)
+        local name = vm.getInfer(index):viewLiterals()
         if not name then
             return nil
         end
-        local key
-        if index.type == 'string' then
-            key = util.viewString(name, index[2])
-        else
-            key = util.viewLiteral(name)
-        end
-        return ('[%s]'):format(key), name
+        return ('[%s]'):format(name), name
     end
     if source.type == 'tableexp' then
         return ('[%d]'):format(source.tindex), source.tindex

Diff for: test/hover/init.lua

@@ -2430,3 +2430,20 @@ local t: {
     ['y']: integer = 2,
 }
 ]]
+
+TEST [[
+local enum = { a = 1, b = 2 }
+
+local <?t?> = {
+    [enum.a] = true,
+    [enum.b] = 2,
+    [3] = {}
+}
+]]
+[[
+local t: {
+    [1]: boolean = true,
+    [2]: integer = 2,
+    [3]: table,
+}
+]]