1 files changed, 20 insertions, 0 deletions
diff --git a/server-beta/src/parser/guide.lua b/server-beta/src/parser/guide.lua
index d3ae7100..bd7f9150 100644
--- a/server-beta/src/parser/guide.lua
+++ b/server-beta/src/parser/guide.lua
@@ -1,6 +1,7 @@
 local error      = error
 local utf8Len    = utf8.len
 local utf8Offset = utf8.offset
+local type       = type
 
 _ENV = nil
 
@@ -195,6 +196,25 @@ function m.eachSource(root, offset, callback)
     end
 end
 
+--- 遍历所有某种类型的source
+function m.eachSourceOf(root, types, callback)
+    if type(types) == 'string' then
+        types = {[types] = true}
+    elseif type(types) == 'table' then
+        for i = 1, #types do
+            types[types[i]] = true
+        end
+    else
+        return
+    end
+    for i = 1, #root do
+        local source = root[i]
+        if types[source.type] then
+            callback(source)
+        end
+    end
+end
+
 --- 获取偏移对应的坐标（row从0开始，col为光标位置）
 ---@param lines table
 ---@return integer {name = 'row'}