1 files changed, 49 insertions, 0 deletions
diff --git a/script-beta/src/core/diagnostics/empty-block.lua b/script-beta/src/core/diagnostics/empty-block.lua
new file mode 100644
index 00000000..2024f4e3
--- /dev/null
+++ b/script-beta/src/core/diagnostics/empty-block.lua
@@ -0,0 +1,49 @@
+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