3 files changed, 65 insertions, 0 deletions
diff --git a/server/src/emmy/class.lua b/server/src/emmy/class.lua
index 84854fc5..a7417210 100644
--- a/server/src/emmy/class.lua
+++ b/server/src/emmy/class.lua
@@ -33,6 +33,23 @@ function mt:eachChild(callback)
     end)
 end
 
+function mt:addField(field)
+    if not self._fields then
+        self._fields = {}
+    end
+    self._fields[#self._fields+1] = field
+end
+
+function mt:eachField(callback)
+    if not self._fields then
+        return
+    end
+    ---@param field EmmyField
+    for _, field in ipairs(self._fields) do
+        callback(field)
+    end
+end
+
 return function (manager, source)
     local self = setmetatable({
         name = source[1][1],
diff --git a/server/src/emmy/field.lua b/server/src/emmy/field.lua
new file mode 100644
index 00000000..d7dfbe98
--- /dev/null
+++ b/server/src/emmy/field.lua
@@ -0,0 +1,40 @@
+local listMgr = require 'vm.list'
+
+---@class EmmyField
+local mt = {}
+mt.__index = mt
+mt.type = 'emmy.field'
+
+function mt:getName()
+    return self.name
+end
+
+function mt:getSource()
+    return listMgr.get(self.source)
+end
+
+function mt:bindType(type)
+    if type then
+        self._bindType = type
+    else
+        return self._bindType
+    end
+end
+
+function mt:bindValue(value)
+    if value then
+        self._bindValue = value
+    else
+        return self._bindValue
+    end
+end
+
+return function (manager, source)
+    local self = setmetatable({
+        name = source[2][1],
+        source = source.id,
+        visible = source[1],
+        _manager = manager,
+    }, mt)
+    return self
+end
diff --git a/server/src/emmy/manager.lua b/server/src/emmy/manager.lua
index e0b60304..7875e322 100644
--- a/server/src/emmy/manager.lua
+++ b/server/src/emmy/manager.lua
@@ -5,6 +5,7 @@ local newTypeUnit = require 'emmy.typeUnit'
 local newAlias = require 'emmy.alias'
 local newParam = require 'emmy.param'
 local newReturn = require 'emmy.return'
+local newField = require 'emmy.field'
 
 local mt = {}
 mt.__index = mt
@@ -118,6 +119,13 @@ function mt:addReturn(source, typeObj)
     return returnObj
 end
 
+function mt:addField(source, typeObj, value)
+    local fieldObj = newField(self, source)
+    fieldObj:bindType(typeObj)
+    fieldObj:bindValue(value)
+    return fieldObj
+end
+
 function mt:remove()
 end