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5 files changed, 197 insertions, 8 deletions

diff --git a/script-beta/core/hover/description.lua b/script-beta/core/hover/description.lua
index 9f44b72d..746d602e 100644
--- a/script-beta/core/hover/description.lua
+++ b/script-beta/core/hover/description.lua
@@ -1,8 +1,12 @@
-local vm    = require 'vm'
-local ws    = require 'workspace'
-local furi  = require 'file-uri'
-local files = require 'files'
-local guide = require 'parser.guide'
+local vm       = require 'vm'
+local ws       = require 'workspace'
+local furi     = require 'file-uri'
+local files    = require 'files'
+local guide    = require 'parser.guide'
+local markdown = require 'provider.markdown'
+local config   = require 'config'
+local client   = require 'provider.client'
+local lang     = require 'language'
 
 local function asString(source)
     local literal = guide.getLiteral(source)
@@ -40,12 +44,53 @@ local function asString(source)
     end
 end
 
+local function getDocFormater()
+    local version = config.config.runtime.version
+    if client.client() == 'vscode' then
+        if version == 'Lua 5.1' then
+            return 'HOVER_NATIVE_DOCUMENT_LUA51'
+        elseif version == 'Lua 5.2' then
+            return 'HOVER_NATIVE_DOCUMENT_LUA52'
+        elseif version == 'Lua 5.3' then
+            return 'HOVER_NATIVE_DOCUMENT_LUA53'
+        elseif version == 'Lua 5.4' then
+            return 'HOVER_NATIVE_DOCUMENT_LUA54'
+        elseif version == 'LuaJIT' then
+            return 'HOVER_NATIVE_DOCUMENT_LUAJIT'
+        end
+    else
+        if version == 'Lua 5.1' then
+            return 'HOVER_DOCUMENT_LUA51'
+        elseif version == 'Lua 5.2' then
+            return 'HOVER_DOCUMENT_LUA52'
+        elseif version == 'Lua 5.3' then
+            return 'HOVER_DOCUMENT_LUA53'
+        elseif version == 'Lua 5.4' then
+            return 'HOVER_DOCUMENT_LUA54'
+        elseif version == 'LuaJIT' then
+            return 'HOVER_DOCUMENT_LUAJIT'
+        end
+    end
+end
+
 local function tryLibrary(source)
     local lib = vm.getLibrary(source)
     if not lib then
-        return
+        return nil
+    end
+    local fmt = getDocFormater()
+    local md = markdown()
+    if lib.value.description then
+        md:add('markdown', lib.value.description:gsub('%(doc%:(.-)%)', function (tag)
+            if fmt then
+                return '(' .. lang.script(fmt, tag) .. ')'
+            end
+        end))
+    end
+    if lib.value.doc and fmt then
+        md:add('markdown', ('[%s](%s)'):format(lang.script.HOVER_VIEW_DOCUMENTS, lang.script(fmt, 'pdf-' .. lib.value.doc)))
     end
-    return lib.value.description
+    return md:string()
 end
 
 return function (source)
diff --git a/script-beta/provider/client.lua b/script-beta/provider/client.lua
new file mode 100644
index 00000000..a2671597
--- /dev/null
+++ b/script-beta/provider/client.lua
@@ -0,0 +1,16 @@
+local nonil = require 'without-check-nil'
+
+local m = {}
+
+function m.client()
+    nonil.enable()
+    local name = m.info.clientInfo.name
+    nonil.disable()
+    return name
+end
+
+function m.init(t)
+    m.info = t
+end
+
+return m
diff --git a/script-beta/provider/markdown.lua b/script-beta/provider/markdown.lua
index 874b3abd..7bd34444 100644
--- a/script-beta/provider/markdown.lua
+++ b/script-beta/provider/markdown.lua
@@ -9,7 +9,7 @@ function mt:add(language, text)
     if language == 'lua' then
         self[#self+1] = ('```lua\n%s\n```'):format(text)
     else
-        self[#self+1] = text
+        self[#self+1] = text .. '\n'
     end
 end
 
diff --git a/script-beta/provider/provider.lua b/script-beta/provider/provider.lua
index 1f49f641..fc8b8001 100644
--- a/script-beta/provider/provider.lua
+++ b/script-beta/provider/provider.lua
@@ -9,6 +9,7 @@ local workspace = require 'workspace'
 local config    = require 'config'
 local library   = require 'library'
 local markdown  = require 'provider.markdown'
+local client    = require 'provider.client'
 
 local function updateConfig()
     local configs = proto.awaitRequest('workspace/configuration', {
@@ -77,6 +78,7 @@ end)
 
 proto.on('initialized', function (params)
     updateConfig()
+    client.init(params)
     proto.awaitRequest('client/registerCapability', {
         registrations = {
             -- 监视文件变化
diff --git a/script-beta/without-check-nil.lua b/script-beta/without-check-nil.lua
new file mode 100644
index 00000000..cc7da9d4
--- /dev/null
+++ b/script-beta/without-check-nil.lua
@@ -0,0 +1,126 @@
+local m = {}
+
+local mt = {}
+mt.__add      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a + b
+end
+mt.__sub      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a - b
+end
+mt.__mul      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a * b
+end
+mt.__div      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a / b
+end
+mt.__mod      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a % b
+end
+mt.__pow      = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a ^ b
+end
+mt.__unm      = function ()
+    return 0
+end
+mt.__concat   = function (a, b)
+    if a == nil then a = '' end
+    if b == nil then b = '' end
+    return a .. b
+end
+mt.__len      = function ()
+    return 0
+end
+mt.__lt       = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a < b
+end
+mt.__le       = function (a, b)
+    if a == nil then a = 0 end
+    if b == nil then b = 0 end
+    return a <= b
+end
+mt.__index    = function () end
+mt.__newindex = function () end
+mt.__call     = function () end
+mt.__pairs    = function () end
+mt.__ipairs   = function () end
+if _VERSION == 'Lua 5.3' or _VERSION == 'Lua 5.4' then
+    mt.__idiv      = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a // b
+    ]]
+    mt.__band      = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a & b
+    ]]
+    mt.__bor       = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a | b
+    ]]
+    mt.__bxor      = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a ~ b
+    ]]
+    mt.__bnot      = load[[
+        return ~ 0
+    ]]
+    mt.__shl       = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a << b
+    ]]
+    mt.__shr       = load[[
+        local a, b = ...
+        if a == nil then a = 0 end
+        if b == nil then b = 0 end
+        return a >> b
+    ]]
+end
+
+for event, func in pairs(mt) do
+    mt[event] = function (...)
+        local watch = m.watch
+        if not watch then
+            return func(...)
+        end
+        local care, result = watch(event, ...)
+        if not care then
+            return func(...)
+        end
+        return result
+    end
+end
+
+function m.enable()
+    debug.setmetatable(nil, mt)
+end
+
+function m.disable()
+    if debug.getmetatable(nil) == mt then
+        debug.setmetatable(nil, nil)
+    end
+end
+
+return m