From 4ca61ec457822dd14966afa0752340ae8ce180a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Fri, 20 Nov 2020 21:57:09 +0800
Subject: no longer beta

---
 script/core/diagnostics/lowercase-global.lua | 56 ++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 script/core/diagnostics/lowercase-global.lua

(limited to 'script/core/diagnostics/lowercase-global.lua')

diff --git a/script/core/diagnostics/lowercase-global.lua b/script/core/diagnostics/lowercase-global.lua
new file mode 100644
index 00000000..fe5d1eca
--- /dev/null
+++ b/script/core/diagnostics/lowercase-global.lua
@@ -0,0 +1,56 @@
+local files   = require 'files'
+local guide   = require 'parser.guide'
+local lang    = require 'language'
+local config  = require 'config'
+local vm      = require 'vm'
+
+local function isDocClass(source)
+    if not source.bindDocs then
+        return false
+    end
+    for _, doc in ipairs(source.bindDocs) do
+        if doc.type == 'doc.class' then
+            return true
+        end
+    end
+    return false
+end
+
+-- 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
+
+    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 not first:match '%l' then
+            return
+        end
+        -- 如果赋值被标记为 doc.class ,则认为是允许的
+        if isDocClass(source) then
+            return
+        end
+        if vm.isGlobalLibraryName(name) then
+            return
+        end
+        callback {
+            start   = source.start,
+            finish  = source.finish,
+            message = lang.script.DIAG_LOWERCASE_GLOBAL,
+        }
+    end)
+end
-- 
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