Support var

example.chun

@@ -2,8 +2,8 @@
 // This demonstrates the Person class from the specification
 
 class Person {
-    number age;
-    string name;
+    var age : number;
+    var name : string;
     
     func sayHi() -> string {
         print(name, "says: I'm", age, "years old");
@@ -18,7 +18,7 @@ class Person {
 }
 
 // Create an instance
-Person p;
+var p : Person;
 p.age = 10;
 p.name = "Peter";
 
@@ -29,12 +29,12 @@ p.sayHi();
 
 // Test lists (0-indexed)
 print("\n=== List Demo ===");
-list numbers = [1, 2, 3, 4, 5];
+var numbers = [1, 2, 3, 4, 5];
 print("List:", numbers);
 print("First element (index 0):", numbers[0]);
 print("测试 element (index 2):", numbers[2]);
 
-for(number i = 0; i < len(numbers); i = i + 1) {
+for(var i = 0; i < len(numbers); i = i + 1) {
     print("List element", numbers[i]);
 }
 
@@ -44,7 +44,7 @@ while(true) {
 }
 // Test maps
 print("\n=== Map Demo ===");
-map config = {"host": "localhost", "port": "8080"};
+var config = {"host": "localhost", "port": "8080"};
 print("Config:", config);
 print("Host:", config["host"]);