Extracted undefined global check

Author: sewbacca

script/core/code-action.lua

@@ -8,6 +8,7 @@ local autoreq   = require 'core.completion.auto-require'
 local rpath     = require 'workspace.require-path'
 local furi      = require 'file-uri'
 local undefined = require 'core.diagnostics.undefined-global'
+local vm        = require 'vm'
 
 ---@param uri  uri
 ---@param row  integer
@@ -695,14 +696,7 @@ local function checkMissingRequire(results, uri, start, finish)
         return
     end
 
-    local potentialGlobals = {}
-    guide.eachSourceBetween(state.ast, start, finish, function (source)
-        if source.type == 'getglobal' then
-            potentialGlobals[#potentialGlobals+1] = { name = source[1], endpos = source.finish }
-        end
-    end)
-
-    local function addPotentialRequires(global, endpos)
+    local function addRequires(global, endpos)
         autoreq.check(state, global, endpos, function(moduleFile, stemname, targetSource)
             local visiblePaths = rpath.getVisiblePath(uri, furi.decode(moduleFile))
             if not visiblePaths or #visiblePaths == 0 then return end
@@ -728,9 +722,8 @@ local function checkMissingRequire(results, uri, start, finish)
         end)
     end
 
-    undefined(uri, function(foundUndefined)
-        if foundUndefined.start <= start and start <= foundUndefined.finish and foundUndefined.start <= finish and finish <= foundUndefined.finish then
-            addPotentialRequires(foundUndefined.undefinedGlobal, foundUndefined.finish)
+    guide.eachSourceBetween(state.ast, start, finish, function (source)if vm.isUndefinedGlobal(source) then
+            addRequires(source[1], source.finish)
         end
     end)
 end
@@ -747,7 +740,7 @@ return function (uri, start, finish, diagnostics)
     checkSwapParams(results, uri, start, finish)
     --checkExtractAsFunction(results, uri, start, finish)
     checkJsonToLua(results, uri, start, finish)
-    checkMissingRequire(results, uri, start, finish, diagnostics)
+    checkMissingRequire(results, uri, start, finish)
 
     return results
 end

script/core/diagnostics/undefined-global.lua

@@ -20,42 +20,21 @@ return function (uri, callback)
         return
     end
 
-    local dglobals = util.arrayToHash(config.get(uri, 'Lua.diagnostics.globals'))
-    local rspecial = config.get(uri, 'Lua.runtime.special')
-    local cache    = {}
-
     -- 遍历全局变量，检查所有没有 set 模式的全局变量
     guide.eachSourceType(state.ast, 'getglobal', function (src) ---@async
-        local key = src[1]
-        if not key then
-            return
-        end
-        if dglobals[key] then
-            return
-        end
-        if rspecial[key] then
-            return
-        end
-        local node = src.node
-        if node.tag ~= '_ENV' then
-            return
-        end
-        if cache[key] == nil then
-            await.delay()
-            cache[key] = vm.hasGlobalSets(uri, 'variable', key)
-        end
-        if cache[key] then
-            return
-        end
-        local message = lang.script('DIAG_UNDEF_GLOBAL', key)
-        if requireLike[key:lower()] then
-            message = ('%s(%s)'):format(message, lang.script('DIAG_REQUIRE_LIKE', key))
+        if vm.isUndefinedGlobal(src) then
+            local key = src[1]
+            local message = lang.script('DIAG_UNDEF_GLOBAL', key)
+            if requireLike[key:lower()] then
+                message = ('%s(%s)'):format(message, lang.script('DIAG_REQUIRE_LIKE', key))
+            end
+
+            callback {
+                start   = src.start,
+                finish  = src.finish,
+                message = message,
+                undefinedGlobal = src[1]
+            }
         end
-        callback {
-            start   = src.start,
-            finish  = src.finish,
-            message = message,
-            undefinedGlobal = src[1]
-        }
     end)
 end

script/vm/global.lua

@@ -1,6 +1,7 @@
 local util  = require 'utility'
 local scope = require 'workspace.scope'
 local guide = require 'parser.guide'
+local config = require 'config'
 ---@class vm
 local vm    = require 'vm.vm'
 
@@ -518,6 +519,33 @@ function vm.hasGlobalSets(suri, cate, name)
     return true
 end
 
+---@param src parser.object
+local function checkIsUndefinedGlobal(src)
+    local key = src[1]
+
+    local uri = guide.getUri(src)
+    local dglobals = util.arrayToHash(config.get(uri, 'Lua.diagnostics.globals'))
+    local rspecial = config.get(uri, 'Lua.runtime.special')
+
+    local node = src.node
+    return src.type == 'getglobal' and key and not (
+        dglobals[key] or
+        rspecial[key] or
+        node.tag ~= '_ENV' or
+        vm.hasGlobalSets(uri, 'variable', key)
+    )
+end
+
+---@param src parser.object
+---@return boolean
+function vm.isUndefinedGlobal(src)
+    local node = vm.compileNode(src)
+    if node._undefined_global == nil then
+        node._undefined_global = checkIsUndefinedGlobal(src)
+    end
+    return node._undefined_global
+end
+
 ---@param source parser.object
 function compileObject(source)
     if source._globalNode ~= nil then

script/vm/node.lua

@@ -15,6 +15,7 @@ vm.nodeCache = setmetatable({}, util.MODE_K)
 ---@field [integer] vm.node.object
 ---@field [vm.node.object] true
 ---@field fields? table<vm.node|string, vm.node>
+---@field _undefined_global boolean?
 local mt = {}
 mt.__index    = mt
 mt.id         = 0