3 files changed, 76 insertions, 2 deletions

diff --git a/server/src/core/completion.lua b/server/src/core/completion.lua
index 3162a48e..eb4e9a1d 100644
--- a/server/src/core/completion.lua
+++ b/server/src/core/completion.lua
@@ -324,6 +324,21 @@ local function searchCloseGlobal(vm, source, word, callback)
     end)
 end
 
+local function searchParams(vm, source, word, callback)
+    ---@type function
+    local func = source:get 'arg'
+    local emmyParams = func:getEmmyParams()
+    if not emmyParams then
+        return
+    end
+    for _, param in ipairs(emmyParams) do
+        local name = param:getName()
+        if matchKey(word, name) then
+            callback(name, param:getSource(), CompletionItemKind.Interface)
+        end
+    end
+end
+
 local function searchKeyWords(vm, source, word, callback)
     for _, key in ipairs(KEYS) do
         if matchKey(word, key) then
@@ -387,6 +402,7 @@ local function searchAsLocal(vm, source, word, callback)
 end
 
 local function searchAsArg(vm, source, word, callback)
+    searchParams(vm, source, word, callback)
     searchCloseGlobal(vm, source, word, callback)
 end
 
@@ -422,7 +438,7 @@ local function searchEmmyFunctionParam(vm, source, word, callback)
     end
     for _, arg in ipairs(func.args) do
         if matchKey(word, arg.name) then
-            callback(arg.name, arg, CompletionItemKind.Unit)
+            callback(arg.name, arg, CompletionItemKind.Interface)
         end
     end
 end
diff --git a/server/src/core/diagnostics.lua b/server/src/core/diagnostics.lua
index 140873c5..f9d6f818 100644
--- a/server/src/core/diagnostics.lua
+++ b/server/src/core/diagnostics.lua
@@ -507,7 +507,57 @@ function mt:checkEmmyAlias(source, callback)
     end
 end
 
+function mt:checkEmmyParam(source, callback, mark)
+    local func = source:get 'emmy function'
+    if not func then
+        return
+    end
+    if mark[func] then
+        return
+    end
+    mark[func] = true
+
+    -- 检查不存在的参数
+    local emmyParams = func:getEmmyParams()
+    local funcParams = {}
+    if func.args then
+        for _, arg in ipairs(func.args) do
+            funcParams[arg.name] = true
+        end
+    end
+    for _, param in ipairs(emmyParams) do
+        local name = param:getName()
+        if not funcParams[name] then
+            callback(param:getSource()[1].start, param:getSource()[1].finish, lang.script.DIAG_INEXISTENT_PARAM)
+        end
+    end
+
+    -- 检查重复的param
+    local lists = {}
+    for _, param in ipairs(emmyParams) do
+        local name = param:getName()
+        if not lists[name] then
+            lists[name] = {}
+        end
+        lists[name][#lists[name]+1] = param:getSource()[1]
+    end
+    for _, list in pairs(lists) do
+        if #list > 1 then
+            local related = {}
+            for _, src in ipairs(list) do
+                related[#related+1] = {
+                    src.start,
+                    src.finish,
+                    src.uri,
+                }
+                callback(src.start, src.finish, lang.script.DIAG_DUPLICATE_PARAM)
+            end
+        end
+    end
+end
+
 function mt:searchEmmyLua(callback)
+    local mark = {}
     self.vm:eachSource(function (source)
         if source.type == 'emmyClass' then
             self:checkEmmyClass(source, callback)
@@ -515,6 +565,8 @@ function mt:searchEmmyLua(callback)
             self:checkEmmyType(source, callback)
         elseif source.type == 'emmyAlias' then
             self:checkEmmyAlias(source, callback)
+        elseif source.type == 'emmyParam' then
+            self:checkEmmyParam(source, callback, mark)
         end
     end)
 end
diff --git a/server/src/vm/function.lua b/server/src/vm/function.lua
index 9b0811bf..8bc38970 100644
--- a/server/src/vm/function.lua
+++ b/server/src/vm/function.lua
@@ -6,6 +6,7 @@ local listMgr = require 'vm.list'
 
 local Watch = setmetatable({}, {__mode = 'kv'})
 
+---@class function
 local mt = {}
 mt.__index = mt
 mt.type = 'function'
@@ -291,7 +292,7 @@ end
 
 function mt:createArg(vm, arg)
     vm:instantSource(arg)
-    arg:set('arg', true)
+    arg:set('arg', self)
     if arg.type == 'name' then
         local emmyParam = self:findEmmyParamByName(arg[1])
         local value = valueMgr.create('nil', arg)
@@ -384,11 +385,16 @@ function mt:setEmmyParams(params)
     if params then
         self._emmyParams = params
         for _, param in ipairs(params) do
+            param:getSource():set('emmy function', self)
             param:getSource()[1]:set('emmy function', self)
         end
     end
 end
 
+function mt:getEmmyParams()
+    return self._emmyParams
+end
+
 local function create(source)
     if not source then
         error('Function need source')