整理一下目录结构

29 files changed, 0 insertions, 1961 deletions

diff --git a/server-beta/src/core/definition.lua b/server-beta/src/core/definition.lua
deleted file mode 100644
index 865fc7cb..00000000
--- a/server-beta/src/core/definition.lua
+++ /dev/null
@@ -1,105 +0,0 @@
-local guide     = require 'parser.guide'
-local workspace = require 'workspace'
-local files     = require 'files'
-local vm        = require 'vm'
-
-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
-    vm.eachDef(source, function (info)
-        if info.mode == 'declare'
-        or info.mode == 'set'
-        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
-
-local function checkRequire(source, offset, callback)
-    if source.type ~= 'call' then
-        return
-    end
-    local func = source.node
-    local pathSource = source.args and source.args[1]
-    if not pathSource then
-        return
-    end
-    if not guide.isContain(pathSource, offset) then
-        return
-    end
-    local literal = guide.getLiteral(pathSource)
-    if type(literal) ~= 'string' then
-        return
-    end
-    local name = func.special
-    if     name == 'require' then
-        local result = workspace.findUrisByRequirePath(literal, true)
-        for _, uri in ipairs(result) do
-            callback(uri)
-        end
-    elseif name == 'dofile'
-    or     name == 'loadfile' then
-        local result = workspace.findUrisByFilePath(literal, true)
-        for _, uri in ipairs(result) do
-            callback(uri)
-        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)
-        checkRequire(source, offset, function (uri)
-            results[#results+1] = {
-                uri    = files.getOriginUri(uri),
-                source = source,
-                target = {
-                    start  = 0,
-                    finish = 0,
-                }
-            }
-        end)
-        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/core/diagnostics/ambiguity-1.lua b/server-beta/src/core/diagnostics/ambiguity-1.lua
deleted file mode 100644
index 37815fb5..00000000
--- a/server-beta/src/core/diagnostics/ambiguity-1.lua
+++ /dev/null
@@ -1,69 +0,0 @@
-local files = require 'files'
-local guide = require 'parser.guide'
-local lang  = require 'language'
-
-local opMap = {
-    ['+']  = true,
-    ['-']  = true,
-    ['*']  = true,
-    ['/']  = true,
-    ['//'] = true,
-    ['^']  = true,
-    ['<<'] = true,
-    ['>>'] = true,
-    ['&']  = true,
-    ['|']  = true,
-    ['~']  = true,
-    ['..'] = true,
-}
-
-local literalMap = {
-    ['number']  = true,
-    ['boolean'] = true,
-    ['string']  = true,
-    ['table']   = true,
-}
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    local text = files.getText(uri)
-    guide.eachSourceType(ast.ast, 'binary', function (source)
-        if source.op.type ~= 'or' then
-            return
-        end
-        local first  = source[1]
-        local second = source[2]
-        -- a + (b or 0) --> (a + b) or 0
-        do
-            if opMap[first.op and first.op.type]
-                and first.type ~= 'unary'
-                and not second.op
-                and literalMap[second.type]
-                and not literalMap[first[2].type]
-            then
-                callback {
-                    start   = source.start,
-                    finish  = source.finish,
-                    message = lang.script('DIAG_AMBIGUITY_1', text:sub(first.start, first.finish))
-                }
-            end
-        end
-        -- (a or 0) + c --> a or (0 + c)
-        do
-            if opMap[second.op and second.op.type]
-                and second.type ~= 'unary'
-                and not first.op
-                and literalMap[second[1].type]
-            then
-                callback {
-                    start   = source.start,
-                    finish  = source.finish,
-                    message = lang.script('DIAG_AMBIGUITY_1', text:sub(second.start, second.finish))
-                }
-            end
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/duplicate-index.lua b/server-beta/src/core/diagnostics/duplicate-index.lua
deleted file mode 100644
index 76b1c958..00000000
--- a/server-beta/src/core/diagnostics/duplicate-index.lua
+++ /dev/null
@@ -1,62 +0,0 @@
-local files   = require 'files'
-local guide   = require 'parser.guide'
-local lang    = require 'language'
-local define  = require 'proto.define'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    guide.eachSourceType(ast.ast, 'table', function (source)
-        local mark = {}
-        for _, obj in ipairs(source) do
-            if obj.type == 'tablefield'
-            or obj.type == 'tableindex' then
-                local name = guide.getKeyName(obj)
-                if name then
-                    if not mark[name] then
-                        mark[name] = {}
-                    end
-                    mark[name][#mark[name]+1] = obj.field or obj.index
-                end
-            end
-        end
-
-        for name, defs in pairs(mark) do
-            local sname = name:match '^.|(.+)$'
-            if #defs > 1 and sname then
-                local related = {}
-                for i = 1, #defs do
-                    local def = defs[i]
-                    related[i] = {
-                        start  = def.start,
-                        finish = def.finish,
-                        uri    = uri,
-                    }
-                end
-                for i = 1, #defs - 1 do
-                    local def = defs[i]
-                    callback {
-                        start   = def.start,
-                        finish  = def.finish,
-                        related = related,
-                        message = lang.script('DIAG_DUPLICATE_INDEX', sname),
-                        level   = define.DiagnosticSeverity.Hint,
-                        tags    = { define.DiagnosticTag.Unnecessary },
-                    }
-                end
-                for i = #defs, #defs do
-                    local def = defs[i]
-                    callback {
-                        start   = def.start,
-                        finish  = def.finish,
-                        related = related,
-                        message = lang.script('DIAG_DUPLICATE_INDEX', sname),
-                    }
-                end
-            end
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/emmy-lua.lua b/server-beta/src/core/diagnostics/emmy-lua.lua
deleted file mode 100644
index b3d19c21..00000000
--- a/server-beta/src/core/diagnostics/emmy-lua.lua
+++ /dev/null
@@ -1,3 +0,0 @@
-return function ()
-    
-end
diff --git a/server-beta/src/core/diagnostics/empty-block.lua b/server-beta/src/core/diagnostics/empty-block.lua
deleted file mode 100644
index 2024f4e3..00000000
--- a/server-beta/src/core/diagnostics/empty-block.lua
+++ /dev/null
@@ -1,49 +0,0 @@
-local files   = require 'files'
-local guide   = require 'parser.guide'
-local lang    = require 'language'
-local define  = require 'proto.define'
-
--- 检查空代码块
--- 但是排除忙等待（repeat/while)
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    guide.eachSourceType(ast.ast, 'if', function (source)
-        for _, block in ipairs(source) do
-            if #block > 0 then
-                return
-            end
-        end
-        callback {
-            start   = source.start,
-            finish  = source.finish,
-            tags    = { define.DiagnosticTag.Unnecessary },
-            message = lang.script.DIAG_EMPTY_BLOCK,
-        }
-    end)
-    guide.eachSourceType(ast.ast, 'loop', function (source)
-        if #source > 0 then
-            return
-        end
-        callback {
-            start   = source.start,
-            finish  = source.finish,
-            tags    = { define.DiagnosticTag.Unnecessary },
-            message = lang.script.DIAG_EMPTY_BLOCK,
-        }
-    end)
-    guide.eachSourceType(ast.ast, 'in', function (source)
-        if #source > 0 then
-            return
-        end
-        callback {
-            start   = source.start,
-            finish  = source.finish,
-            tags    = { define.DiagnosticTag.Unnecessary },
-            message = lang.script.DIAG_EMPTY_BLOCK,
-        }
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/global-in-nil-env.lua b/server-beta/src/core/diagnostics/global-in-nil-env.lua
deleted file mode 100644
index 9a0d4f35..00000000
--- a/server-beta/src/core/diagnostics/global-in-nil-env.lua
+++ /dev/null
@@ -1,66 +0,0 @@
-local files    = require 'files'
-local guide    = require 'parser.guide'
-local lang     = require 'language'
-
--- TODO: 检查路径是否可达
-local function mayRun(path)
-    return true
-end
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    local root = guide.getRoot(ast.ast)
-    local env  = guide.getENV(root)
-
-    local nilDefs = {}
-    if not env.ref then
-        return
-    end
-    for _, ref in ipairs(env.ref) do
-        if ref.type == 'setlocal' then
-            if ref.value and ref.value.type == 'nil' then
-                nilDefs[#nilDefs+1] = ref
-            end
-        end
-    end
-
-    if #nilDefs == 0 then
-        return
-    end
-
-    local function check(source)
-        local node = source.node
-        if node.tag == '_ENV' then
-            local ok
-            for _, nilDef in ipairs(nilDefs) do
-                local mode, pathA = guide.getPath(nilDef, source)
-                if  mode == 'before'
-                and mayRun(pathA) then
-                    ok = nilDef
-                    break
-                end
-            end
-            if ok then
-                callback {
-                    start   = source.start,
-                    finish  = source.finish,
-                    uri     = uri,
-                    message = lang.script.DIAG_GLOBAL_IN_NIL_ENV,
-                    related = {
-                        {
-                            start  = ok.start,
-                            finish = ok.finish,
-                            uri    = uri,
-                        }
-                    }
-                }
-            end
-        end
-    end
-
-    guide.eachSourceType(ast.ast, 'getglobal', check)
-    guide.eachSourceType(ast.ast, 'setglobal', check)
-end
diff --git a/server-beta/src/core/diagnostics/init.lua b/server-beta/src/core/diagnostics/init.lua
deleted file mode 100644
index 0d523f26..00000000
--- a/server-beta/src/core/diagnostics/init.lua
+++ /dev/null
@@ -1,41 +0,0 @@
-local files  = require 'files'
-local define = require 'proto.define'
-local config = require 'config'
-local await  = require 'await'
-
-local function check(uri, name, level, results)
-    if config.config.diagnostics.disable[name] then
-        return
-    end
-    level = config.config.diagnostics.severity[name] or level
-    local severity = define.DiagnosticSeverity[level]
-    local clock = os.clock()
-    require('core.diagnostics.' .. name)(uri, function (result)
-        result.level = severity or result.level
-        result.code  = name
-        results[#results+1] = result
-    end, name)
-    local passed = os.clock() - clock
-    if passed >= 0.5 then
-        log.warn(('Diagnostics [%s] @ [%s] takes [%.3f] sec!'):format(name, uri, passed))
-        await.delay()
-    end
-end
-
-return function (uri)
-    local ast = files.getAst(uri)
-    if not ast then
-        return nil
-    end
-    local results = {}
-
-    for name, level in pairs(define.DiagnosticDefaultSeverity) do
-        check(uri, name, level, results)
-    end
-
-    if #results == 0 then
-        return nil
-    end
-
-    return results
-end
diff --git a/server-beta/src/core/diagnostics/lowercase-global.lua b/server-beta/src/core/diagnostics/lowercase-global.lua
deleted file mode 100644
index bc48e1e6..00000000
--- a/server-beta/src/core/diagnostics/lowercase-global.lua
+++ /dev/null
@@ -1,39 +0,0 @@
-local files   = require 'files'
-local guide   = require 'parser.guide'
-local lang    = require 'language'
-local config  = require 'config'
-local library = require 'library'
-
--- 不允许定义首字母小写的全局变量（很可能是拼错或者漏删）
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    local definedGlobal = {}
-    for name in pairs(config.config.diagnostics.globals) do
-        definedGlobal[name] = true
-    end
-    for name in pairs(library.global) do
-        definedGlobal[name] = true
-    end
-
-    guide.eachSourceType(ast.ast, 'setglobal', function (source)
-        local name = guide.getName(source)
-        if definedGlobal[name] then
-            return
-        end
-        local first = name:match '%w'
-        if not first then
-            return
-        end
-        if first:match '%l' then
-            callback {
-                start   = source.start,
-                finish  = source.finish,
-                message = lang.script.DIAG_LOWERCASE_GLOBAL,
-            }
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/newfield-call.lua b/server-beta/src/core/diagnostics/newfield-call.lua
deleted file mode 100644
index 75681cbc..00000000
--- a/server-beta/src/core/diagnostics/newfield-call.lua
+++ /dev/null
@@ -1,37 +0,0 @@
-local files = require 'files'
-local guide = require 'parser.guide'
-local lang  = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    local lines = files.getLines(uri)
-    local text  = files.getText(uri)
-
-    guide.eachSourceType(ast.ast, 'table', function (source)
-        for i = 1, #source do
-            local field = source[i]
-            if field.type == 'call' then
-                local func = field.node
-                local args = field.args
-                if args then
-                    local funcLine = guide.positionOf(lines, func.finish)
-                    local argsLine = guide.positionOf(lines, args.start)
-                    if argsLine > funcLine then
-                        callback {
-                            start   = field.start,
-                            finish  = field.finish,
-                            message = lang.script('DIAG_PREFIELD_CALL'
-                                , text:sub(func.start, func.finish)
-                                , text:sub(args.start, args.finish)
-                            )
-                        }
-                    end
-                end
-            end
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/newline-call.lua b/server-beta/src/core/diagnostics/newline-call.lua
deleted file mode 100644
index cb318380..00000000
--- a/server-beta/src/core/diagnostics/newline-call.lua
+++ /dev/null
@@ -1,38 +0,0 @@
-local files = require 'files'
-local guide = require 'parser.guide'
-local lang  = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    local lines = files.getLines(uri)
-
-    guide.eachSourceType(ast.ast, 'call', function (source)
-        local node = source.node
-        local args = source.args
-        if not args then
-            return
-        end
-
-        -- 必须有其他人在继续使用当前对象
-        if not source.next then
-            return
-        end
-
-        local nodeRow = guide.positionOf(lines, node.finish)
-        local argRow  = guide.positionOf(lines, args.start)
-        if nodeRow == argRow then
-            return
-        end
-
-        if #args == 1 then
-            callback {
-                start   = args.start,
-                finish  = args.finish,
-                message = lang.script.DIAG_PREVIOUS_CALL,
-            }
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/redefined-local.lua b/server-beta/src/core/diagnostics/redefined-local.lua
deleted file mode 100644
index f6176794..00000000
--- a/server-beta/src/core/diagnostics/redefined-local.lua
+++ /dev/null
@@ -1,32 +0,0 @@
-local files = require 'files'
-local guide = require 'parser.guide'
-local lang  = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    guide.eachSourceType(ast.ast, 'local', function (source)
-        local name = source[1]
-        if name == '_'
-        or name == '_ENV' then
-            return
-        end
-        local exist = guide.getLocal(source, name, source.start-1)
-        if exist then
-            callback {
-                start   = source.start,
-                finish  = source.finish,
-                message = lang.script('DIAG_REDEFINED_LOCAL', name),
-                related = {
-                    {
-                        start  = exist.start,
-                        finish = exist.finish,
-                        uri    = uri,
-                    }
-                },
-            }
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/redundant-parameter.lua b/server-beta/src/core/diagnostics/redundant-parameter.lua
deleted file mode 100644
index ec14188e..00000000
--- a/server-beta/src/core/diagnostics/redundant-parameter.lua
+++ /dev/null
@@ -1,102 +0,0 @@
-local files  = require 'files'
-local guide  = require 'parser.guide'
-local vm     = require 'vm'
-local lang   = require 'language'
-local define = require 'proto.define'
-local await  = require 'await'
-
-local function countLibraryArgs(source)
-    local func = vm.getLibrary(source)
-    if not func then
-        return nil
-    end
-    local result = 0
-    if not func.args then
-        return result
-    end
-    if func.args[#func.args].type == '...' then
-        return math.maxinteger
-    end
-    result = result + #func.args
-    return result
-end
-
-local function countCallArgs(source)
-    local result = 0
-    if not source.args then
-        return 0
-    end
-    if source.node and source.node.type == 'getmethod' then
-        result = result + 1
-    end
-    result = result + #source.args
-    return result
-end
-
-local function countFuncArgs(source)
-    local result = 0
-    if not source.args then
-        return result
-    end
-    if source.args[#source.args].type == '...' then
-        return math.maxinteger
-    end
-    if source.parent and source.parent.type == 'setmethod' then
-        result = result + 1
-    end
-    result = result + #source.args
-    return result
-end
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    guide.eachSourceType(ast.ast, 'call', function (source)
-        local callArgs = countCallArgs(source)
-        if callArgs == 0 then
-            return
-        end
-
-        await.delay(function ()
-            return files.globalVersion
-        end)
-
-        local func = source.node
-        local funcArgs
-        vm.eachDef(func, function (info)
-            if info.mode == 'value' then
-                local src = info.source
-                if src.type == 'function' then
-                    local args = countFuncArgs(src)
-                    if not funcArgs or args > funcArgs then
-                        funcArgs = args
-                    end
-                end
-            end
-        end)
-
-        funcArgs = funcArgs or countLibraryArgs(func)
-        if not funcArgs then
-            return
-        end
-
-        local delta = callArgs - funcArgs
-        if delta <= 0 then
-            return
-        end
-        for i = #source.args - delta + 1, #source.args do
-            local arg = source.args[i]
-            if arg then
-                callback {
-                    start   = arg.start,
-                    finish  = arg.finish,
-                    tags    = { define.DiagnosticTag.Unnecessary },
-                    message = lang.script('DIAG_OVER_MAX_ARGS', funcArgs, callArgs)
-                }
-            end
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/redundant-value.lua b/server-beta/src/core/diagnostics/redundant-value.lua
deleted file mode 100644
index be483448..00000000
--- a/server-beta/src/core/diagnostics/redundant-value.lua
+++ /dev/null
@@ -1,24 +0,0 @@
-local files  = require 'files'
-local define = require 'proto.define'
-local lang   = require 'language'
-
-return function (uri, callback, code)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    local diags = ast.diags[code]
-    if not diags then
-        return
-    end
-
-    for _, info in ipairs(diags) do
-        callback {
-            start   = info.start,
-            finish  = info.finish,
-            tags    = { define.DiagnosticTag.Unnecessary },
-            message = lang.script('DIAG_OVER_MAX_VALUES', info.max, info.passed)
-        }
-    end
-end
diff --git a/server-beta/src/core/diagnostics/trailing-space.lua b/server-beta/src/core/diagnostics/trailing-space.lua
deleted file mode 100644
index e54a6e60..00000000
--- a/server-beta/src/core/diagnostics/trailing-space.lua
+++ /dev/null
@@ -1,55 +0,0 @@
-local files = require 'files'
-local lang  = require 'language'
-local guide = require 'parser.guide'
-
-local function isInString(ast, offset)
-    local result = false
-    guide.eachSourceType(ast, 'string', function (source)
-        if offset >= source.start and offset <= source.finish then
-            result = true
-        end
-    end)
-    return result
-end
-
-return function (uri, callback)
-    local ast   = files.getAst(uri)
-    if not ast then
-        return
-    end
-    local text  = files.getText(uri)
-    local lines = files.getLines(uri)
-    for i = 1, #lines do
-        local start  = lines[i].start
-        local range  = lines[i].range
-        local lastChar = text:sub(range, range)
-        if lastChar ~= ' ' and lastChar ~= '\t' then
-            goto NEXT_LINE
-        end
-        if isInString(ast.ast, range) then
-            goto NEXT_LINE
-        end
-        local first = start
-        for n = range - 1, start, -1 do
-            local char = text:sub(n, n)
-            if char ~= ' ' and char ~= '\t' then
-                first = n + 1
-                break
-            end
-        end
-        if first == start then
-            callback {
-                start   = first,
-                finish  = range,
-                message = lang.script.DIAG_LINE_ONLY_SPACE,
-            }
-        else
-            callback {
-                start   = first,
-                finish  = range,
-                message = lang.script.DIAG_LINE_POST_SPACE,
-            }
-        end
-        ::NEXT_LINE::
-    end
-end
diff --git a/server-beta/src/core/diagnostics/undefined-env-child.lua b/server-beta/src/core/diagnostics/undefined-env-child.lua
deleted file mode 100644
index df096cb8..00000000
--- a/server-beta/src/core/diagnostics/undefined-env-child.lua
+++ /dev/null
@@ -1,32 +0,0 @@
-local files  = require 'files'
-local guide  = require 'parser.guide'
-local vm     = require 'vm'
-local lang   = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    -- 再遍历一次 getglobal ，找出 _ENV 被重载的情况
-    guide.eachSourceType(ast.ast, 'getglobal', function (source)
-        -- 单独验证自己是否在重载过的 _ENV 中有定义
-        if source.node.tag == '_ENV' then
-            return
-        end
-        local setInENV = vm.eachRef(source, function (info)
-            if info.mode == 'set' then
-                return true
-            end
-        end)
-        if setInENV then
-            return
-        end
-        local key = source[1]
-        callback {
-            start   = source.start,
-            finish  = source.finish,
-            message = lang.script('DIAG_UNDEF_ENV_CHILD', key),
-        }
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/undefined-global.lua b/server-beta/src/core/diagnostics/undefined-global.lua
deleted file mode 100644
index ed81ced3..00000000
--- a/server-beta/src/core/diagnostics/undefined-global.lua
+++ /dev/null
@@ -1,63 +0,0 @@
-local files   = require 'files'
-local vm      = require 'vm'
-local lang    = require 'language'
-local library = require 'library'
-local config  = require 'config'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    local globalCache = {}
-
-    -- 遍历全局变量，检查所有没有 mode['set'] 的全局变量
-    local globals = vm.getGlobals(ast.ast)
-    for key, infos in pairs(globals) do
-        if infos.mode['set'] == true then
-            goto CONTINUE
-        end
-        if globalCache[key] then
-            goto CONTINUE
-        end
-        local skey = key and key:match '^s|(.+)$'
-        if not skey then
-            goto CONTINUE
-        end
-        if library.global[skey] then
-            goto CONTINUE
-        end
-        if config.config.diagnostics.globals[skey] then
-            goto CONTINUE
-        end
-        if globalCache[key] == nil then
-            local uris = files.findGlobals(key)
-            for i = 1, #uris do
-                local destAst = files.getAst(uris[i])
-                local destGlobals = vm.getGlobals(destAst.ast)
-                if destGlobals[key] and destGlobals[key].mode['set'] then
-                    globalCache[key] = true
-                    goto CONTINUE
-                end
-            end
-        end
-        globalCache[key] = false
-        local message = lang.script('DIAG_UNDEF_GLOBAL', skey)
-        local otherVersion  = library.other[skey]
-        local customVersion = library.custom[skey]
-        if otherVersion then
-            message = ('%s(%s)'):format(message, lang.script('DIAG_DEFINED_VERSION', table.concat(otherVersion, '/'), config.config.runtime.version))
-        elseif customVersion then
-            message = ('%s(%s)'):format(message, lang.script('DIAG_DEFINED_CUSTOM', table.concat(customVersion, '/')))
-        end
-        for _, info in ipairs(infos) do
-            callback {
-                start   = info.source.start,
-                finish  = info.source.finish,
-                message = message,
-            }
-        end
-        ::CONTINUE::
-    end
-end
diff --git a/server-beta/src/core/diagnostics/unused-function.lua b/server-beta/src/core/diagnostics/unused-function.lua
deleted file mode 100644
index 6c53cdf7..00000000
--- a/server-beta/src/core/diagnostics/unused-function.lua
+++ /dev/null
@@ -1,45 +0,0 @@
-local files   = require 'files'
-local guide   = require 'parser.guide'
-local vm      = require 'vm'
-local define  = require 'proto.define'
-local lang    = require 'language'
-local await   = require 'await'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    -- 只检查局部函数与全局函数
-    guide.eachSourceType(ast.ast, 'function', function (source)
-        local parent = source.parent
-        if not parent then
-            return
-        end
-        if  parent.type ~= 'local'
-        and parent.type ~= 'setlocal'
-        and parent.type ~= 'setglobal' then
-            return
-        end
-        local hasSet
-        local hasGet = vm.eachRef(source, function (info)
-            if     info.mode == 'get' then
-                return true
-            elseif info.mode == 'set'
-            or     info.mode == 'declare' then
-                hasSet = true
-            end
-        end)
-        if not hasGet and hasSet then
-            callback {
-                start   = source.start,
-                finish  = source.finish,
-                tags    = { define.DiagnosticTag.Unnecessary },
-                message = lang.script.DIAG_UNUSED_FUNCTION,
-            }
-        end
-        await.delay(function ()
-            return files.globalVersion
-        end)
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/unused-label.lua b/server-beta/src/core/diagnostics/unused-label.lua
deleted file mode 100644
index e6d998ba..00000000
--- a/server-beta/src/core/diagnostics/unused-label.lua
+++ /dev/null
@@ -1,22 +0,0 @@
-local files  = require 'files'
-local guide  = require 'parser.guide'
-local define = require 'proto.define'
-local lang   = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    guide.eachSourceType(ast.ast, 'label', function (source)
-        if not source.ref then
-            callback {
-                start   = source.start,
-                finish  = source.finish,
-                tags    = { define.DiagnosticTag.Unnecessary },
-                message = lang.script('DIAG_UNUSED_LABEL', source[1]),
-            }
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/unused-local.lua b/server-beta/src/core/diagnostics/unused-local.lua
deleted file mode 100644
index 22b2e16b..00000000
--- a/server-beta/src/core/diagnostics/unused-local.lua
+++ /dev/null
@@ -1,46 +0,0 @@
-local files  = require 'files'
-local guide  = require 'parser.guide'
-local define = require 'proto.define'
-local lang   = require 'language'
-
-local function hasGet(loc)
-    if not loc.ref then
-        return false
-    end
-    for _, ref in ipairs(loc.ref) do
-        if ref.type == 'getlocal' then
-            if not ref.next then
-                return true
-            end
-            local nextType = ref.next.type
-            if  nextType ~= 'setmethod'
-            and nextType ~= 'setfield'
-            and nextType ~= 'setindex' then
-                return true
-            end
-        end
-    end
-    return false
-end
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-    guide.eachSourceType(ast.ast, 'local', function (source)
-        local name = source[1]
-        if name == '_'
-        or name == '_ENV' then
-            return
-        end
-        if not hasGet(source) then
-            callback {
-                start   = source.start,
-                finish  = source.finish,
-                tags    = { define.DiagnosticTag.Unnecessary },
-                message = lang.script('DIAG_UNUSED_LOCAL', name),
-            }
-        end
-    end)
-end
diff --git a/server-beta/src/core/diagnostics/unused-vararg.lua b/server-beta/src/core/diagnostics/unused-vararg.lua
deleted file mode 100644
index 74cc08e7..00000000
--- a/server-beta/src/core/diagnostics/unused-vararg.lua
+++ /dev/null
@@ -1,31 +0,0 @@
-local files  = require 'files'
-local guide  = require 'parser.guide'
-local define = require 'proto.define'
-local lang   = require 'language'
-
-return function (uri, callback)
-    local ast = files.getAst(uri)
-    if not ast then
-        return
-    end
-
-    guide.eachSourceType(ast.ast, 'function', function (source)
-        local args = source.args
-        if not args then
-            return
-        end
-
-        for _, arg in ipairs(args) do
-            if arg.type == '...' then
-                if not arg.ref then
-                    callback {
-                        start   = arg.start,
-                        finish  = arg.finish,
-                        tags    = { define.DiagnosticTag.Unnecessary },
-                        message = lang.script.DIAG_UNUSED_VARARG,
-                    }
-                end
-            end
-        end
-    end)
-end
diff --git a/server-beta/src/core/highlight.lua b/server-beta/src/core/highlight.lua
deleted file mode 100644
index 61e3f91a..00000000
--- a/server-beta/src/core/highlight.lua
+++ /dev/null
@@ -1,230 +0,0 @@
-local guide  = require 'parser.guide'
-local files  = require 'files'
-local vm     = require 'vm'
-local define = require 'proto.define'
-
-local function ofLocal(source, callback)
-    callback(source)
-    if source.ref then
-        for _, ref in ipairs(source.ref) do
-            callback(ref)
-        end
-    end
-end
-
-local function ofField(source, uri, callback)
-    local parent = source.parent
-    if not parent then
-        return
-    end
-    local myKey = guide.getKeyName(source)
-    if parent.type == 'tableindex'
-    or parent.type == 'tablefield' then
-        local tbl = parent.parent
-        vm.eachField(tbl, function (info)
-            if info.key ~= myKey then
-                return
-            end
-            local destUri = guide.getRoot(info.source).uri
-            if destUri ~= uri then
-                return
-            end
-            callback(info.source)
-        end)
-    else
-        vm.eachField(parent.node, function (info)
-            if info.key ~= myKey then
-                return
-            end
-            local destUri = guide.getRoot(info.source).uri
-            if destUri ~= uri then
-                return
-            end
-            callback(info.source)
-        end)
-    end
-end
-
-local function ofIndex(source, uri, callback)
-    local parent = source.parent
-    if not parent then
-        return
-    end
-    if parent.type == 'setindex'
-    or parent.type == 'getindex'
-    or parent.type == 'tableindex' then
-        ofField(source, uri, callback)
-    end
-end
-
-local function ofLabel(source, callback)
-    vm.eachRef(source, function (info)
-        callback(info.source)
-    end)
-end
-
-local function find(source, uri, callback)
-    if     source.type == 'local' then
-        ofLocal(source, callback)
-    elseif source.type == 'getlocal'
-    or     source.type == 'setlocal' then
-        ofLocal(source.node, callback)
-    elseif source.type == 'field'
-    or     source.type == 'method' then
-        ofField(source, uri, callback)
-    elseif source.type == 'string'
-    or     source.type == 'boolean'
-    or     source.type == 'number' then
-        ofIndex(source, uri, callback)
-        callback(source)
-    elseif source.type == 'nil' then
-        callback(source)
-    elseif source.type == 'goto'
-    or     source.type == 'label' then
-        ofLabel(source, callback)
-    end
-end
-
-local function checkInIf(source, text, offset)
-    -- 检查 end
-    local endA = source.finish - #'end' + 1
-    local endB = source.finish
-    if  offset >= endA
-    and offset <= endB
-    and text:sub(endA, endB) == 'end' then
-        return true
-    end
-    -- 检查每个子模块
-    for _, block in ipairs(source) do
-        for i = 1, #block.keyword, 2 do
-            local start  = block.keyword[i]
-            local finish = block.keyword[i+1]
-            if offset >= start and offset <= finish then
-                return true
-            end
-        end
-    end
-    return false
-end
-
-local function makeIf(source, text, callback)
-    -- end
-    local endA = source.finish - #'end' + 1
-    local endB = source.finish
-    if text:sub(endA, endB) == 'end' then
-        callback(endA, endB)
-    end
-    -- 每个子模块
-    for _, block in ipairs(source) do
-        for i = 1, #block.keyword, 2 do
-            local start  = block.keyword[i]
-            local finish = block.keyword[i+1]
-            callback(start, finish)
-        end
-    end
-    return false
-end
-
-local function findKeyword(source, text, offset, callback)
-    if source.type == 'do'
-    or source.type == 'function'
-    or source.type == 'loop'
-    or source.type == 'in'
-    or source.type == 'while'
-    or source.type == 'repeat' then
-        local ok
-        for i = 1, #source.keyword, 2 do
-            local start  = source.keyword[i]
-            local finish = source.keyword[i+1]
-            if offset >= start and offset <= finish then
-                ok = true
-                break
-            end
-        end
-        if ok then
-            for i = 1, #source.keyword, 2 do
-                local start  = source.keyword[i]
-                local finish = source.keyword[i+1]
-                callback(start, finish)
-            end
-        end
-    elseif source.type == 'if' then
-        local ok = checkInIf(source, text, offset)
-        if ok then
-            makeIf(source, text, callback)
-        end
-    end
-end
-
-return function (uri, offset)
-    local ast = files.getAst(uri)
-    if not ast then
-        return nil
-    end
-    local text = files.getText(uri)
-    local results = {}
-    local mark = {}
-    guide.eachSourceContain(ast.ast, offset, function (source)
-        find(source, uri, function (target)
-            local kind
-            if     target.type == 'getfield' then
-                target = target.field
-                kind   = define.DocumentHighlightKind.Read
-            elseif target.type == 'setfield'
-            or     target.type == 'tablefield' then
-                target = target.field
-                kind   = define.DocumentHighlightKind.Write
-            elseif target.type == 'getmethod' then
-                target = target.method
-                kind   = define.DocumentHighlightKind.Read
-            elseif target.type == 'setmethod' then
-                target = target.method
-                kind   = define.DocumentHighlightKind.Write
-            elseif target.type == 'getindex' then
-                target = target.index
-                kind   = define.DocumentHighlightKind.Read
-            elseif target.type == 'setindex'
-            or     target.type == 'tableindex' then
-                target = target.index
-                kind   = define.DocumentHighlightKind.Write
-            elseif target.type == 'getlocal'
-            or     target.type == 'getglobal'
-            or     target.type == 'goto' then
-                kind   = define.DocumentHighlightKind.Read
-            elseif target.type == 'setlocal'
-            or     target.type == 'local'
-            or     target.type == 'setglobal'
-            or     target.type == 'label' then
-                kind   = define.DocumentHighlightKind.Write
-            elseif target.type == 'string'
-            or     target.type == 'boolean'
-            or     target.type == 'number'
-            or     target.type == 'nil' then
-                kind   = define.DocumentHighlightKind.Text
-            else
-                log.warn('Unknow target.type:', target.type)
-                return
-            end
-            if mark[target] then
-                return
-            end
-            mark[target] = true
-            results[#results+1] = {
-                start  = target.start,
-                finish = target.finish,
-                kind   = kind,
-            }
-        end)
-        findKeyword(source, text, offset, function (start, finish)
-            results[#results+1] = {
-                start  = start,
-                finish = finish,
-                kind   = define.DocumentHighlightKind.Write
-            }
-        end)
-    end)
-    if #results == 0 then
-        return nil
-    end
-    return results
-end
diff --git a/server-beta/src/core/hover/arg.lua b/server-beta/src/core/hover/arg.lua
deleted file mode 100644
index be344488..00000000
--- a/server-beta/src/core/hover/arg.lua
+++ /dev/null
@@ -1,20 +0,0 @@
-local guide = require 'parser.guide'
-local vm    = require 'vm'
-
-local function asFunction(source)
-    if not source.args then
-        return ''
-    end
-    local args = {}
-    for i = 1, #source.args do
-        local arg = source.args[i]
-        args[i] = ('%s: %s'):format(guide.getName(arg), vm.getType(arg))
-    end
-    return table.concat(args, ', ')
-end
-
-return function (source)
-    if source.type == 'function' then
-        return asFunction(source)
-    end
-end
diff --git a/server-beta/src/core/hover/init.lua b/server-beta/src/core/hover/init.lua
deleted file mode 100644
index b99c14b2..00000000
--- a/server-beta/src/core/hover/init.lua
+++ /dev/null
@@ -1,56 +0,0 @@
-local files     = require 'files'
-local guide     = require 'parser.guide'
-local vm        = require 'vm'
-local getLabel  = require 'core.hover.label'
-
-local function getHoverAsFunction(source)
-    local values = vm.getValue(source)
-    local labels = {}
-    for _, value in ipairs(values) do
-        if value.type == 'function' then
-            labels[#labels+1] = getLabel(value.source)
-        end
-    end
-
-    local label = table.concat(labels, '\n')
-    return {
-        label  = label,
-        source = source,
-    }
-end
-
-local function getHoverAsValue(source)
-    local label = getLabel(source)
-    return {
-        label  = label,
-        source = source,
-    }
-end
-
-local function getHover(source)
-    local isFunction = vm.hasType(source, 'function')
-    if isFunction then
-        return getHoverAsFunction(source)
-    else
-        return getHoverAsValue(source)
-    end
-end
-
-return function (uri, offset)
-    local ast = files.getAst(uri)
-    if not ast then
-        return nil
-    end
-    local hover = guide.eachSourceContain(ast.ast, offset, function (source)
-        if source.type == 'local'
-        or source.type == 'setlocal'
-        or source.type == 'getlocal'
-        or source.type == 'setglobal'
-        or source.type == 'getglobal'
-        or source.type == 'field'
-        or source.type == 'method' then
-            return getHover(source)
-        end
-    end)
-    return hover
-end
diff --git a/server-beta/src/core/hover/label.lua b/server-beta/src/core/hover/label.lua
deleted file mode 100644
index 72ce60f4..00000000
--- a/server-beta/src/core/hover/label.lua
+++ /dev/null
@@ -1,103 +0,0 @@
-local buildName   = require 'core.hover.name'
-local buildArg    = require 'core.hover.arg'
-local buildReturn = require 'core.hover.return'
-local buildTable  = require 'core.hover.table'
-local vm          = require 'vm'
-local util        = require 'utility'
-
-local function asFunction(source)
-    local name = buildName(source)
-    local arg  = buildArg(source)
-    local rtn  = buildReturn(source)
-    local lines = {}
-    lines[1] = ('function %s(%s)'):format(name, arg)
-    lines[2] = rtn
-    return table.concat(lines, '\n')
-end
-
-local function asLocal(source)
-    local name = buildName(source)
-    local type = vm.getType(source)
-    local literal = vm.getLiteral(source)
-    if type == 'table' then
-        type = buildTable(source)
-    end
-    if literal == nil then
-        return ('local %s: %s'):format(name, type)
-    else
-        return ('local %s: %s = %s'):format(name, type, util.viewLiteral(literal))
-    end
-end
-
-local function asGlobal(source)
-    local name = buildName(source)
-    local type = vm.getType(source)
-    local literal = vm.getLiteral(source)
-    if type == 'table' then
-        type = buildTable(source)
-    end
-    if literal == nil then
-        return ('global %s: %s'):format(name, type)
-    else
-        return ('global %s: %s = %s'):format(name, type, util.viewLiteral(literal))
-    end
-end
-
-local function isGlobalField(source)
-    if source.type == 'field'
-    or source.type == 'method' then
-        source = source.parent
-    end
-    if source.type == 'setfield'
-    or source.type == 'getfield'
-    or source.type == 'setmethod'
-    or source.type == 'getmethod'
-    or source.type == 'tablefield' then
-        local node = source.node
-        if node.type == 'setglobal'
-        or node.type == 'getglobal' then
-            return true
-        end
-        return isGlobalField(node)
-    else
-        return false
-    end
-end
-
-local function asField(source)
-    if isGlobalField(source) then
-        return asGlobal(source)
-    end
-    local name = buildName(source)
-    local type = vm.getType(source)
-    local literal = vm.getLiteral(source)
-    if type == 'table' then
-        type = buildTable(source)
-    end
-    if literal == nil then
-        return ('field %s: %s'):format(name, type)
-    else
-        return ('field %s: %s = %s'):format(name, type, util.viewLiteral(literal))
-    end
-end
-
-return function (source)
-    if source.type == 'function' then
-        return asFunction(source)
-    elseif source.type == 'local'
-    or     source.type == 'getlocal'
-    or     source.type == 'setlocal' then
-        return asLocal(source)
-    elseif source.type == 'setglobal'
-    or     source.type == 'getglobal' then
-        return asGlobal(source)
-    elseif source.type == 'getfield'
-    or     source.type == 'setfield'
-    or     source.type == 'getmethod'
-    or     source.type == 'setmethod'
-    or     source.type == 'tablefield'
-    or     source.type == 'field'
-    or     source.type == 'method' then
-        return asField(source)
-    end
-end
diff --git a/server-beta/src/core/hover/name.lua b/server-beta/src/core/hover/name.lua
deleted file mode 100644
index a22a8b5a..00000000
--- a/server-beta/src/core/hover/name.lua
+++ /dev/null
@@ -1,64 +0,0 @@
-local guide = require 'parser.guide'
-local vm    = require 'vm'
-
-local function asLocal(source)
-    return guide.getName(source)
-end
-
-local function asMethod(source)
-    local class = vm.eachField(source.node, function (info)
-        if info.key == 's|type' or info.key == 's|__name' or info.key == 's|name' then
-            if info.value and info.value.type == 'string' then
-                return info.value[1]
-            end
-        end
-    end)
-    local node = class or guide.getName(source.node) or '?'
-    local method = guide.getName(source)
-    return ('%s:%s'):format(node, method)
-end
-
-local function asField(source)
-    local class = vm.eachField(source.node, function (info)
-        if info.key == 's|type' or info.key == 's|__name' or info.key == 's|name' then
-            if info.value and info.value.type == 'string' then
-                return info.value[1]
-            end
-        end
-    end)
-    local node = class or guide.getName(source.node) or '?'
-    local method = guide.getName(source)
-    return ('%s.%s'):format(node, method)
-end
-
-local function asGlobal(source)
-    return guide.getName(source)
-end
-
-local function buildName(source)
-    if source.type == 'local'
-    or source.type == 'getlocal'
-    or source.type == 'setlocal' then
-        return asLocal(source) or ''
-    end
-    if source.type == 'setglobal'
-    or source.type == 'getglobal' then
-        return asGlobal(source) or ''
-    end
-    if source.type == 'setmethod'
-    or source.type == 'getmethod' then
-        return asMethod(source) or ''
-    end
-    if source.type == 'setfield'
-    or source.tyoe == 'getfield'
-    or source.type == 'tablefield' then
-        return asField(source) or ''
-    end
-    local parent = source.parent
-    if parent then
-        return buildName(parent)
-    end
-    return ''
-end
-
-return buildName
diff --git a/server-beta/src/core/hover/return.lua b/server-beta/src/core/hover/return.lua
deleted file mode 100644
index c22626a6..00000000
--- a/server-beta/src/core/hover/return.lua
+++ /dev/null
@@ -1,34 +0,0 @@
-local guide = require 'parser.guide'
-local vm    = require 'vm'
-
-local function asFunction(source)
-    if not source.returns then
-        return nil
-    end
-    local returns = {}
-    for _, rtn in ipairs(source.returns) do
-        for i = 1, #rtn do
-            local values = vm.getValue(rtn[i])
-            returns[#returns+1] = values
-        end
-        break
-    end
-    if #returns == 0 then
-        return nil
-    end
-    local lines = {}
-    for i = 1, #returns do
-        if i == 1 then
-            lines[i] = ('  -> %s'):format(vm.viewType(returns[i]))
-        else
-            lines[i] = ('% 3d. %s'):format(i, returns[i])
-        end
-    end
-    return table.concat(lines, '\n')
-end
-
-return function (source)
-    if source.type == 'function' then
-        return asFunction(source)
-    end
-end
diff --git a/server-beta/src/core/hover/table.lua b/server-beta/src/core/hover/table.lua
deleted file mode 100644
index 9ed86692..00000000
--- a/server-beta/src/core/hover/table.lua
+++ /dev/null
@@ -1,35 +0,0 @@
-local vm = require 'vm'
-
-local function checkClass(source)
-end
-
-return function (source)
-    local fields = {}
-    local class
-    vm.eachField(source, function (info)
-        if info.key == 's|type' or info.key == 's|__name' or info.key == 's|name' then
-            if info.value and info.value.type == 'string' then
-                class = info.value[1]
-            end
-        end
-        local type = vm.getType(info.source)
-        fields[#fields+1] = ('%s'):format(type)
-    end)
-    local fieldsBuf
-    if #fields == 0 then
-        fieldsBuf = '{}'
-    else
-        local lines = {}
-        lines[#lines+1] = '{'
-        for _, field in ipairs(fields) do
-            lines[#lines+1] = '    ' .. field
-        end
-        lines[#lines+1] = '}'
-        fieldsBuf = table.concat(lines, '\n')
-    end
-    if class then
-        return ('%s %s'):format(class, fieldsBuf)
-    else
-        return fieldsBuf
-    end
-end
diff --git a/server-beta/src/core/reference.lua b/server-beta/src/core/reference.lua
deleted file mode 100644
index 7e265e97..00000000
--- a/server-beta/src/core/reference.lua
+++ /dev/null
@@ -1,84 +0,0 @@
-local guide = require 'parser.guide'
-local files = require 'files'
-local vm    = require 'vm'
-
-local function isFunction(source, offset)
-    if source.type ~= 'function' then
-        return false
-    end
-    -- 必须点在 `function` 这个单词上才能查找函数引用
-    return offset >= source.start and offset < source.start + #'function'
-end
-
-local function findRef(source, offset, 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 ~= 'tablefield'
-    and source.type ~= 'method'
-    and source.type ~= 'string'
-    and source.type ~= 'number'
-    and source.type ~= 'boolean'
-    and source.type ~= 'goto'
-    and source.type ~= 'label'
-    and not isFunction(source, offset) then
-        return
-    end
-    vm.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
-        if info.mode == 'value' then
-            local src  = info.source
-            local root = guide.getRoot(src)
-            local uri  = root.uri
-            if     src.type == 'function' then
-                if src.parent.type == 'return' then
-                    callback(src, uri)
-                end
-            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)
-        findRef(source, offset, function (target, uri)
-            results[#results+1] = {
-                target = target,
-                uri    = files.getOriginUri(uri),
-            }
-        end)
-    end)
-    if #results == 0 then
-        return nil
-    end
-    return results
-end
diff --git a/server-beta/src/core/rename.lua b/server-beta/src/core/rename.lua
deleted file mode 100644
index 3e4512da..00000000
--- a/server-beta/src/core/rename.lua
+++ /dev/null
@@ -1,374 +0,0 @@
-local files  = require 'files'
-local vm     = require 'vm'
-local guide  = require 'parser.guide'
-local proto  = require 'proto'
-local define = require 'proto.define'
-local util   = require 'utility'
-
-local Forcing
-
-local function askForcing(str)
-    if TEST then
-        return true
-    end
-    if Forcing == false then
-        return false
-    end
-    local version = files.globalVersion
-    -- TODO
-    local item = proto.awaitRequest('window/showMessageRequest', {
-        type    = define.MessageType.Warning,
-        message = ('[%s]不是有效的标识符，是否强制替换？'):format(str),
-        actions = {
-            {
-                title = '强制替换',
-            },
-            {
-                title = '取消',
-            },
-        }
-    })
-    if version ~= files.globalVersion then
-        Forcing = false
-        proto.notify('window/showMessage', {
-            type    = define.MessageType.Warning,
-            message = '文件发生了变化，替换取消。'
-        })
-        return false
-    end
-    if not item then
-        Forcing = false
-        return false
-    end
-    if item.title == '强制替换' then
-        Forcing = true
-        return true
-    else
-        Forcing = false
-        return false
-    end
-end
-
-local function askForMultiChange(results, newname)
-    if TEST then
-        return true
-    end
-    local uris = {}
-    for _, result in ipairs(results) do
-        local uri = result.uri
-        if not uris[uri] then
-            uris[uri] = 0
-            uris[#uris+1] = uri
-        end
-        uris[uri] = uris[uri] + 1
-    end
-    if #uris <= 1 then
-        return true
-    end
-
-    local version = files.globalVersion
-    -- TODO
-    local item = proto.awaitRequest('window/showMessageRequest', {
-        type    = define.MessageType.Warning,
-        message = ('将修改 %d 个文件，共 %d 处。'):format(
-            #uris,
-            #results
-        ),
-        actions = {
-            {
-                title = '继续',
-            },
-            {
-                title = '放弃',
-            },
-        }
-    })
-    if version ~= files.globalVersion then
-        proto.notify('window/showMessage', {
-            type    = define.MessageType.Warning,
-            message = '文件发生了变化，替换取消。'
-        })
-        return false
-    end
-    if item and item.title == '继续' then
-        local fileList = {}
-        for _, uri in ipairs(uris) do
-            fileList[#fileList+1] = ('%s (%d)'):format(uri, uris[uri])
-        end
-
-        log.debug(('Renamed [%s]\r\n%s'):format(newname, table.concat(fileList, '\r\n')))
-        return true
-    end
-    return false
-end
-
-local function trim(str)
-    return str:match '^%s*(%S+)%s*$'
-end
-
-local function isValidName(str)
-    return str:match '^[%a_][%w_]*$'
-end
-
-local function isValidGlobal(str)
-    for s in str:gmatch '[^%.]*' do
-        if not isValidName(trim(s)) then
-            return false
-        end
-    end
-    return true
-end
-
-local function isValidFunctionName(str)
-    if isValidGlobal(str) then
-        return true
-    end
-    local pos = str:find(':', 1, true)
-    if not pos then
-        return false
-    end
-    return  isValidGlobal(trim(str:sub(1, pos-1)))
-        and isValidName(trim(str:sub(pos+1)))
-end
-
-local function isFunctionGlobalName(source)
-    local parent = source.parent
-    if parent.type ~= 'setglobal' then
-        return false
-    end
-    local value = parent.value
-    if not value.type ~= 'function' then
-        return false
-    end
-    return value.start <= parent.start
-end
-
-local function renameLocal(source, newname, callback)
-    if isValidName(newname) then
-        callback(source, source.start, source.finish, newname)
-        return
-    end
-    if askForcing(newname) then
-        callback(source, source.start, source.finish, newname)
-    end
-end
-
-local function renameField(source, newname, callback)
-    if isValidName(newname) then
-        callback(source, source.start, source.finish, newname)
-        return true
-    end
-    local parent = source.parent
-    if parent.type == 'setfield'
-    or parent.type == 'getfield' then
-        local dot = parent.dot
-        local newstr = '[' .. util.viewString(newname) .. ']'
-        callback(source, dot.start, source.finish, newstr)
-    elseif parent.type == 'tablefield' then
-        local newstr = '[' .. util.viewString(newname) .. ']'
-        callback(source, source.start, source.finish, newstr)
-    elseif parent.type == 'getmethod' then
-        if not askForcing(newname) then
-            return false
-        end
-        callback(source, source.start, source.finish, newname)
-    elseif parent.type == 'setmethod' then
-        local uri = guide.getRoot(source).uri
-        local text = files.getText(uri)
-        local func = parent.value
-        -- function mt:name () end --> mt['newname'] = function (self) end
-        local newstr = string.format('%s[%s] = function '
-            , text:sub(parent.start, parent.node.finish)
-            , util.viewString(newname)
-        )
-        callback(source, func.start, parent.finish, newstr)
-        local pl = text:find('(', parent.finish, true)
-        if pl then
-            if func.args then
-                callback(source, pl + 1, pl, 'self, ')
-            else
-                callback(source, pl + 1, pl, 'self')
-            end
-        end
-    end
-    return true
-end
-
-local function renameGlobal(source, newname, callback)
-    if isValidGlobal(newname) then
-        callback(source, source.start, source.finish, newname)
-        return true
-    end
-    if isValidFunctionName(newname) then
-        if not isFunctionGlobalName(source) then
-            askForcing(newname)
-        end
-        callback(source, source.start, source.finish, newname)
-        return true
-    end
-    local newstr = '_ENV[' .. util.viewString(newname) .. ']'
-    -- function name () end --> _ENV['newname'] = function () end
-    if source.value and source.value.type == 'function'
-    and source.value.start < source.start then
-        callback(source, source.value.start, source.finish, newstr .. ' = function ')
-        return true
-    end
-    callback(source, source.start, source.finish, newstr)
-    return true
-end
-
-local function ofLocal(source, newname, callback)
-    renameLocal(source, newname, callback)
-    if source.ref then
-        for _, ref in ipairs(source.ref) do
-            renameLocal(ref, newname, callback)
-        end
-    end
-end
-
-local function ofField(source, newname, callback)
-    return vm.eachRef(source, function (info)
-        local src = info.source
-        if     src.type == 'tablefield'
-        or     src.type == 'getfield'
-        or     src.type == 'setfield' then
-            src = src.field
-        elseif src.type == 'tableindex'
-        or     src.type == 'getindex'
-        or     src.type == 'setindex' then
-            src = src.index
-        elseif src.type == 'getmethod'
-        or     src.type == 'setmethod' then
-            src = src.method
-        end
-        if src.type == 'string' then
-            local quo = src[2]
-            local text = util.viewString(newname, quo)
-            callback(src, src.start, src.finish, text)
-            return
-        elseif src.type == 'field'
-        or     src.type == 'method' then
-            local suc = renameField(src, newname, callback)
-            if not suc then
-                return false
-            end
-        elseif src.type == 'setglobal'
-        or     src.type == 'getglobal' then
-            local suc = renameGlobal(src, newname, callback)
-            if not suc then
-                return false
-            end
-        end
-    end)
-end
-
-local function rename(source, newname, callback)
-    if source.type == 'label'
-    or source.type == 'goto' then
-        if not isValidName(newname) and not askForcing(newname)then
-            return false
-        end
-        vm.eachRef(source, function (info)
-            callback(info.source, info.source.start, info.source.finish, newname)
-        end)
-    elseif source.type == 'local' then
-        return ofLocal(source, newname, callback)
-    elseif source.type == 'setlocal'
-    or     source.type == 'getlocal' then
-        return ofLocal(source.node, newname, callback)
-    elseif source.type == 'field'
-    or     source.type == 'method'
-    or     source.type == 'tablefield'
-    or     source.type == 'string'
-    or     source.type == 'setglobal'
-    or     source.type == 'getglobal' then
-        return ofField(source, newname, callback)
-    end
-    return true
-end
-
-local function prepareRename(source)
-    if source.type == 'label'
-    or source.type == 'goto'
-    or source.type == 'local'
-    or source.type == 'setlocal'
-    or source.type == 'getlocal'
-    or source.type == 'field'
-    or source.type == 'method'
-    or source.type == 'tablefield'
-    or source.type == 'setglobal'
-    or source.type == 'getglobal' then
-        return source, source[1]
-    elseif source.type == 'string' then
-        local parent = source.parent
-        if not parent then
-            return nil
-        end
-        if parent.type == 'setindex'
-        or parent.type == 'getindex'
-        or parent.type == 'tableindex' then
-            return source, source[1]
-        end
-        return nil
-    end
-    return nil
-end
-
-local m = {}
-
-function m.rename(uri, pos, newname)
-    local ast = files.getAst(uri)
-    if not ast then
-        return nil
-    end
-    local results = {}
-
-    guide.eachSourceContain(ast.ast, pos, function(source)
-        rename(source, newname, function (target, start, finish, text)
-            results[#results+1] = {
-                start  = start,
-                finish = finish,
-                text   = text,
-                uri    = guide.getRoot(target).uri,
-            }
-        end)
-    end)
-
-    if Forcing == false then
-        Forcing = nil
-        return nil
-    end
-
-    if #results == 0 then
-        return nil
-    end
-
-    if not askForMultiChange(results, newname) then
-        return nil
-    end
-
-    return results
-end
-
-function m.prepareRename(uri, pos)
-    local ast = files.getAst(uri)
-    if not ast then
-        return nil
-    end
-
-    local result
-    guide.eachSourceContain(ast.ast, pos, function(source)
-        local res, text = prepareRename(source)
-        if res then
-            result = {
-                start  = source.start,
-                finish = source.finish,
-                text   = text,
-            }
-        end
-    end)
-
-    return result
-end
-
-return m