1 files changed, 62 insertions, 0 deletions
diff --git a/server/src/vm/local.lua b/server/src/vm/local.lua
new file mode 100644
index 00000000..f1c33ecf
--- /dev/null
+++ b/server/src/vm/local.lua
@@ -0,0 +1,62 @@
+local function getDefaultSource()
+    return {
+        start = 0,
+        finish = 0,
+        uri = '',
+    }
+end
+
+local mt = {}
+mt.__index = mt
+mt.type = 'local'
+
+function mt:setValue(value)
+    if self.value then
+        self.value:mergeValue(value)
+    else
+        self.value = value
+    end
+end
+
+function mt:getValue()
+    return self.value
+end
+
+function mt:addInfo(tp, source)
+    self[#self+1] = {
+        type = tp,
+        source = source,
+    }
+end
+
+function mt:eachInfo(callback)
+    for _, info in ipairs(self) do
+        callback(info)
+    end
+end
+
+function mt:setFlag(name, v)
+    if not self._flag then
+        self._flag = {}
+    end
+    self._flag[name] = v
+end
+
+function mt:getFlag(name)
+    if not self._flag then
+        return nil
+    end
+    return self._flag[name]
+end
+
+return function (name, source, value)
+    if not value then
+        error('Local must has a value')
+    end
+    local self = setmetatable({
+        name = name,
+        source = source or getDefaultSource(),
+        value = value,
+    }, mt)
+    return self
+end