BlueLagoon: Added isStateStringWellFormed

src/comp1110/ass2/BlueLagoon.java

@@ -26,7 +26,78 @@ public class BlueLagoon {
      * @return true if stateString is well-formed and false otherwise
      */
     public static boolean isStateStringWellFormed(String stateString){
-         return false; // FIXME Task 3
+
+        // Check if the string is empty
+        if (stateString == ""){
+            return false;
+        }
+
+
+        // Check if the last character is a semicolon
+        if (stateString.charAt(stateString.length()-1) != ';'){
+            return false;
+        }
+
+        // Split string by semicolon
+        String[] splitStateString = stateString.split("; ");
+
+        for (String sub: splitStateString){
+            switch (sub.substring(0,1)) {
+                case "a": {
+                    // Check if the string is well formed for game arrangement
+                    // string should be a [0-9] [0-9] with each number being 1 or 2 digits
+                    if (!sub.matches("a \\d{1,2} \\d{1,2}")) {
+                        return false;
+                    }
+                    break;
+                }
+                case "c": {
+                    // Check if the string is well formed for current state
+                    // string should be c [0-9] E/S or c [0-9] E/S
+
+                    if (!sub.matches("c \\d{1,2} [E|S]")) {
+                        return false;
+                    }
+                    break;
+                }
+                case "i": {
+                    // Check if the string is well formed for island
+
+                    if (!sub.matches("i \\d{1,2} (\\d{1,2},\\d{1,2} )*\\d{1,2},\\d{1,2}")) {
+                        return false;
+                    }
+                    break;
+                }
+                case "s": {
+                    // Check if the string is well formed for stones
+
+                    if (!sub.matches("s (\\d{1,2},\\d{1,2} )+\\d{1,2},\\d{1,2}")) {
+                        return false;
+                    }
+                    break;
+                }
+                case "r":{
+                    // Check if the string is well formed for the unclaimed resources and statuettes
+                    if (!sub.matches("r C (\\d{1,2},\\d{1,2} )*B (\\d{1,2},\\d{1,2} )*W (\\d{1,2},\\d{1,2} )*P (\\d{1,2},\\d{1,2} )*S( \\d{1,2},\\d{1,2})*")){
+                        return false;
+                    }
+                    break;
+                }
+                case "p": {
+                    // Check if the string is well formed for the player info
+                    if (!sub.matches("p \\d \\d{1,3} \\d{1,2} \\d{1,2} \\d{1,2} \\d{1,2} \\d{1,2} S (\\d{1,2},\\d{1,2} )*T( (\\d{1,2},\\d{1,2} ?)*)?;?")){
+                        return false;
+                    }
+                    break;
+                }
+                default: {
+                    // If the string does not start with any of the above characters, it is not well formed
+                    return false;
+                }
+            }
+        }
+
+        return true;
     }
 
     /**