chore:

FormulaEnginePoC/FormulaEngine/Internal/FormulaConverter.cs

@@ -51,8 +51,10 @@ namespace FormulaEnginePoC.FormulaEngine.Internal
                 , {"<=", "<="}
                 , {">=", ">="}
                 , {"%", "%"}
+                , {"如果", ""}
                 , {"那么", "?"}
                 , {"否则", ":"}
+                , {"否则如果", ":"}
                 , {"或者", "||"}
                 , {"并且", "&&"}
                 ,
@@ -68,6 +70,22 @@ namespace FormulaEnginePoC.FormulaEngine.Internal
                 , {"(文本)结尾为", ".EndsWith"}
                 , {"(文本)包含", ".Contains"}
             };
+
+            //TODO: functions
+            /* ABS(expression)
+             * ROUND(expression)
+             * CEIL(expression)
+             * FLOOR(expression)
+             * TRUNCATE(expression,expression)
+             * MOD(expression)
+             * STR(expression)
+             * INT(expression)
+             * INT(expression,expression)
+             * AVG(ex1,ex2,ex3...)
+             * MAX(ex1,ex2,ex3...)
+             * MIN(ex1,ex2,ex3...)
+             * SUM(ex1,ex2,ex3...)
+             */
         }
 
         public static string Convert(string friendInput, TypeMapping mapping)