4 files changed, 61 insertions, 8 deletions
diff --git a/server/src/method/textDocument/definition.lua b/server/src/method/textDocument/definition.lua
index e1c45317..d9c32b36 100644
--- a/server/src/method/textDocument/definition.lua
+++ b/server/src/method/textDocument/definition.lua
@@ -10,12 +10,13 @@ local function checkWorkSpaceComplete(lsp, source)
     lsp:checkWorkSpaceComplete()
 end
 
-return function (lsp, params)
+local function findResult(lsp, params)
     local uri = params.textDocument.uri
     local vm, lines = lsp:loadVM(uri)
     if not vm then
         return nil
     end
+
     -- lua是从1开始的，因此都要+1
     local position = lines:positionAsChar(params.position.line + 1, params.position.character)
     local source = core.findSource(vm, position)
@@ -54,7 +55,33 @@ return function (lsp, params)
         end
     end
 
-    local response = locations
+    if #locations == 0 then
+        return nil
+    end
+
+    return locations
+end
 
-    return response
+local LastTask
+
+return function (lsp, params)
+    if LastTask then
+        LastTask:remove()
+        LastTask = nil
+    end
+    local result = findResult(lsp, params)
+    if result then
+        return result
+    end
+    return function (response)
+        LastTask = ac.loop(0.1, function ()
+            if lsp:isWaitingCompile() then
+                return
+            end
+            LastTask:remove()
+            LastTask = nil
+            local result = findResult(lsp, params)
+            response(result)
+        end)
+    end
 end
diff --git a/server/src/method/textDocument/implementation.lua b/server/src/method/textDocument/implementation.lua
index 8bd35a6c..a4d45169 100644
--- a/server/src/method/textDocument/implementation.lua
+++ b/server/src/method/textDocument/implementation.lua
@@ -10,7 +10,7 @@ local function checkWorkSpaceComplete(lsp, source)
     lsp:checkWorkSpaceComplete()
 end
 
-return function (lsp, params)
+local function findResult(lsp, params)
     local uri = params.textDocument.uri
     local vm, lines = lsp:loadVM(uri)
     if not vm then
@@ -54,7 +54,33 @@ return function (lsp, params)
         end
     end
 
-    local response = locations
+    if #locations == 0 then
+        return nil
+    end
+
+    return locations
+end
+
+local LastTask
 
-    return response
+return function (lsp, params)
+    if LastTask then
+        LastTask:remove()
+        LastTask = nil
+    end
+    local result = findResult(lsp, params)
+    if result then
+        return result
+    end
+    return function (response)
+        LastTask = ac.loop(0.1, function ()
+            if lsp:isWaitingCompile() then
+                return
+            end
+            LastTask:remove()
+            LastTask = nil
+            local result = findResult(lsp, params)
+            response(result)
+        end)
+    end
 end
diff --git a/server/src/method/workspace/didChangeConfiguration.lua b/server/src/method/workspace/didChangeConfiguration.lua
index 7a00676d..dd1f84ff 100644
--- a/server/src/method/workspace/didChangeConfiguration.lua
+++ b/server/src/method/workspace/didChangeConfiguration.lua
@@ -58,7 +58,7 @@ return function (lsp)
             lsp:reDiagnostic()
         end
         if not eq(oldConfig.workspace, newConfig.workspace) then
-            lsp:ClearAllFiles()
+            lsp:clearAllFiles()
             lsp.workspace:scanFiles()
         end
     end)
diff --git a/server/src/service.lua b/server/src/service.lua
index d5a66a92..586aa937 100644
--- a/server/src/service.lua
+++ b/server/src/service.lua
@@ -249,7 +249,7 @@ function mt:reDiagnostic()
     end
 end
 
-function mt:ClearAllFiles()
+function mt:clearAllFiles()
     for uri in pairs(self._file) do
         self:removeText(uri)
         self:clearDiagnostics(uri)