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3 files changed, 86 insertions, 10 deletions

diff --git a/server-beta/src/core/reference.lua b/server-beta/src/core/reference.lua
new file mode 100644
index 00000000..96d1b635
--- /dev/null
+++ b/server-beta/src/core/reference.lua
@@ -0,0 +1,65 @@
+local guide     = require 'parser.guide'
+local workspace = require 'workspace'
+local files     = require 'files'
+local searcher  = require 'searcher'
+
+local function findDef(source, callback)
+    if  source.type ~= 'local'
+    and source.type ~= 'getlocal'
+    and source.type ~= 'setlocal'
+    and source.type ~= 'setglobal'
+    and source.type ~= 'getglobal'
+    and source.type ~= 'field'
+    and source.type ~= 'method'
+    and source.type ~= 'string'
+    and source.type ~= 'number'
+    and source.type ~= 'boolean'
+    and source.type ~= 'goto' then
+        return
+    end
+    searcher.eachRef(source, function (info)
+        if info.mode == 'declare'
+        or info.mode == 'set'
+        or info.mode == 'get'
+        or info.mode == 'return' then
+            local src  = info.source
+            local root = guide.getRoot(src)
+            local uri  = root.uri
+            if     src.type == 'setfield'
+            or     src.type == 'getfield'
+            or     src.type == 'tablefield' then
+                callback(src.field, uri)
+            elseif src.type == 'setindex'
+            or     src.type == 'getindex'
+            or     src.type == 'tableindex' then
+                callback(src.index, uri)
+            elseif src.type == 'getmethod'
+            or     src.type == 'setmethod' then
+                callback(src.method, uri)
+            else
+                callback(src, uri)
+            end
+        end
+    end)
+end
+
+return function (uri, offset)
+    local ast = files.getAst(uri)
+    if not ast then
+        return nil
+    end
+    local results = {}
+    guide.eachSourceContain(ast.ast, offset, function (source)
+        findDef(source, function (target, uri)
+            results[#results+1] = {
+                target = target,
+                uri    = files.getOriginUri(uri),
+                source = source,
+            }
+        end)
+    end)
+    if #results == 0 then
+        return nil
+    end
+    return results
+end
diff --git a/server-beta/src/provider/diagnostic.lua b/server-beta/src/provider/diagnostic.lua
index ba9f1caa..74c6d87a 100644
--- a/server-beta/src/provider/diagnostic.lua
+++ b/server-beta/src/provider/diagnostic.lua
@@ -156,13 +156,17 @@ end
 function m.refresh(uri)
     m.version = m.version + 1
     local myVersion = m.version
-    if uri then
-        m.doDiagnostic(uri, true)
-    end
-    if not m._start then
-        return
-    end
     await.create(function ()
+        await.delay()
+        if myVersion ~= m.version then
+            return
+        end
+        if uri then
+            m.doDiagnostic(uri, true)
+        end
+        if not m._start then
+            return
+        end
         await.sleep(0.2)
         if myVersion ~= m.version then
             return
diff --git a/server-beta/src/searcher/eachRef.lua b/server-beta/src/searcher/eachRef.lua
index b1023f52..7f43cbac 100644
--- a/server-beta/src/searcher/eachRef.lua
+++ b/server-beta/src/searcher/eachRef.lua
@@ -75,10 +75,17 @@ local function ofValue(value, callback)
         return
     end
 
-    callback {
-        source   = value,
-        mode     = 'value',
-    }
+    if value.type == 'table'
+    or value.type == 'string'
+    or value.type == 'number'
+    or value.type == 'boolean'
+    or value.type == 'nil'
+    or value.type == 'function' then
+        callback {
+            source   = value,
+            mode     = 'value',
+        }
+    end
 
     searcher.eachRef(value, callback)