fix wrong `missing-fields` with union types

fix #2252

7 files changed, 43 insertions, 9 deletions

diff --git a/changelog.md b/changelog.md
index 1c5b53f2..a105d276 100644
--- a/changelog.md
+++ b/changelog.md
@@ -25,10 +25,12 @@
 * `FIX` wrong hover and signature for method with varargs and overloads
 * `FIX` [#2155]
 * `FIX` [#2224]
+* `FIX` [#2252]
 * `FIX` [#2267]
 
 [#2155]: https://github.com/LuaLS/lua-language-server/issues/2155
 [#2224]: https://github.com/LuaLS/lua-language-server/issues/2224
+[#2252]: https://github.com/LuaLS/lua-language-server/issues/2252
 [#2267]: https://github.com/LuaLS/lua-language-server/issues/2267
 
 ## 3.6.25
diff --git a/locale/en-us/script.lua b/locale/en-us/script.lua
index 202d98d7..56e5fd87 100644
--- a/locale/en-us/script.lua
+++ b/locale/en-us/script.lua
@@ -169,7 +169,7 @@ DIAG_INVISIBLE_PACKAGE                =
 DIAG_GLOBAL_ELEMENT                   =
 'Element is global.'
 DIAG_MISSING_FIELDS                   =
-'Missing fields: {}'
+'Missing required fields in type `{1}`: {2}'
 DIAG_INJECT_FIELD                     =
 'Fields cannot be injected into the reference of `{class}` for `{field}`. {fix}'
 DIAG_INJECT_FIELD_FIX_CLASS           =
diff --git a/locale/pt-br/script.lua b/locale/pt-br/script.lua
index 05730d56..2357aa50 100644
--- a/locale/pt-br/script.lua
+++ b/locale/pt-br/script.lua
@@ -169,7 +169,7 @@ DIAG_INVISIBLE_PACKAGE                = -- TODO: need translate!
 DIAG_GLOBAL_ELEMENT                  = -- TODO: need translate!
 'Element is global.'
 DIAG_MISSING_FIELDS                   = -- TODO: need translate!
-'Missing fields: {}'
+'Missing required fields in type `{1}`: {2}'
 DIAG_INJECT_FIELD                     = -- TODO: need translate!
 'Fields cannot be injected into the reference of `{class}` for `{field}`. {fix}'
 DIAG_INJECT_FIELD_FIX_CLASS           = -- TODO: need translate!
diff --git a/locale/zh-cn/script.lua b/locale/zh-cn/script.lua
index b59411a9..6459a104 100644
--- a/locale/zh-cn/script.lua
+++ b/locale/zh-cn/script.lua
@@ -169,7 +169,7 @@ DIAG_INVISIBLE_PACKAGE                =
 DIAG_GLOBAL_ELEMENT                   =
 '全局变量。'
 DIAG_MISSING_FIELDS                   =
-'缺少字段： {}'
+'缺少类型 `{1}` 的必要字段： {2}'
 DIAG_INJECT_FIELD                     =
 '不能在 `{class}` 的引用中注入字段 `{field}` 。{fix}'
 DIAG_INJECT_FIELD_FIX_CLASS           =
diff --git a/locale/zh-tw/script.lua b/locale/zh-tw/script.lua
index 80c4bec2..43c064b2 100644
--- a/locale/zh-tw/script.lua
+++ b/locale/zh-tw/script.lua
@@ -169,7 +169,7 @@ DIAG_INVISIBLE_PACKAGE                = -- TODO: need translate!
 DIAG_GLOBAL_ELEMENT                  = -- TODO: need translate!
 'Element is global.'
 DIAG_MISSING_FIELDS                   = -- TODO: need translate!
-'Missing fields: {}'
+'Missing required fields in type `{1}`: {2}'
 DIAG_INJECT_FIELD                     = -- TODO: need translate!
 'Fields cannot be injected into the reference of `{class}` for `{field}`. {fix}'
 DIAG_INJECT_FIELD_FIX_CLASS           = -- TODO: need translate!
diff --git a/script/core/diagnostics/missing-fields.lua b/script/core/diagnostics/missing-fields.lua
index 6e02f638..210920fd 100644
--- a/script/core/diagnostics/missing-fields.lua
+++ b/script/core/diagnostics/missing-fields.lua
@@ -27,6 +27,7 @@ return function (uri, callback)
                 return
             end
         end
+        local warnings = {}
         for _, def in ipairs(defs) do
             if def.type == 'doc.class' then
                 if not def.fields then
@@ -67,12 +68,17 @@ return function (uri, callback)
                     return
                 end
 
-                callback {
-                    start   = src.start,
-                    finish  = src.finish,
-                    message = lang.script('DIAG_MISSING_FIELDS', table.concat(missedKeys, ', ')),
-                }
+                warnings[#warnings+1] = lang.script('DIAG_MISSING_FIELDS', def.class[1], table.concat(missedKeys, ', '))
             end
         end
+
+        if #warnings == 0 then
+            return
+        end
+        callback {
+            start   = src.start,
+            finish  = src.finish,
+            message = table.concat(warnings, '\n')
+        }
     end)
 end
diff --git a/test/diagnostics/missing-fields.lua b/test/diagnostics/missing-fields.lua
index f5fdd35c..ab87f81d 100644
--- a/test/diagnostics/missing-fields.lua
+++ b/test/diagnostics/missing-fields.lua
@@ -205,3 +205,29 @@ TEST [[
 ---@type A
 return <!{}!>
 ]]
+
+TEST [[
+---@class A
+---@field x number
+
+---@class B
+---@field y number
+
+---@type A|B
+local t = <!{
+    z = 1,
+}!>
+]]
+
+TEST [[
+---@class A
+---@field x number
+
+---@class B
+---@field y number
+
+---@type A|B
+local t = {
+    y = 1,
+}
+]]