诊断检查 break 后的代码

1 files changed, 34 insertions, 0 deletions

diff --git a/script-beta/core/diagnostics/code-after-break.lua b/script-beta/core/diagnostics/code-after-break.lua
new file mode 100644
index 00000000..a2bac8a4
--- /dev/null
+++ b/script-beta/core/diagnostics/code-after-break.lua
@@ -0,0 +1,34 @@
+local files  = require 'files'
+local guide  = require 'parser.guide'
+local lang   = require 'language'
+local define = require 'proto.define'
+
+return function (uri, callback)
+    local state = files.getAst(uri)
+    if not state then
+        return
+    end
+
+    local mark = {}
+    guide.eachSourceType(state.ast, 'break', function (source)
+        local list = source.parent
+        if mark[list] then
+            return
+        end
+        mark[list] = true
+        for i = #list, 1, -1 do
+            local src = list[i]
+            if src == source then
+                if i == #list then
+                    return
+                end
+                callback {
+                    start   = list[i+1].start,
+                    finish  = list[#list].range or list[#list].finish,
+                    tags    = { define.DiagnosticTag.Unnecessary },
+                    message = lang.script.DIAG_CODE_AFTER_BREAK,
+                }
+            end
+        end
+    end)
+end