AES268 · AES268 · May 8, 2024 · May 8, 2024 · May 8, 2024 · May 8, 2024
diff --git a/.vscode/launch.json b/.vscode/launch.json
@@ -0,0 +1,21 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "java",
+            "name": "Tokenizer",
+            "request": "launch",
+            "mainClass": "token.Tokenizer",
+            "projectName": ""
+        },
+        {
+            "type": "java",
+            "name": "Current File",
+            "request": "launch",
+            "mainClass": "${file}"
+        }
+    ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -0,0 +1,4 @@
+{
+    "cmake.configureOnOpen": true,
+    "java.debug.settings.onBuildFailureProceed": true
+}
diff --git a/Input.txt b/Input.txt
@@ -1 +1 @@
-integer x equals 5
+If x Or GGOInteger X equals 5GO
diff --git a/TokenType.java b/TokenType.java
@@ -17,6 +17,10 @@ public enum TokenType
     LONG,
     STRING,
     INVALID,
-    IF,
     PRINT,
+    IF,
+    CONDITION,
+    AND,
+    OR,
+    EQUALS,
 }
diff --git a/Tokenizer.java b/Tokenizer.java
@@ -17,13 +17,6 @@ public static void main(String[]args)
         }catch(IOException e){
             e.printStackTrace();
         }
-        //Integer x equals 6
-        //Character b equals 5
-        //String[] tokens=testt.split(" ");
-        //for (String token : tokens)
-        //{System.out.print(token + ", ");}
-        //System.out.print("\n\n\n");
-
         Tokenizer tokenizer=new Tokenizer();
         try{
         ArrayList<Token> listoftoken=tokenizer.tokenize(testt);
@@ -34,114 +27,130 @@ public static void main(String[]args)
         {
             System.out.println("ERROR");
         }
-        //ExpressionTree tree=tokenizer.buildExpressionTree(listoftoken);
-        //Calculator calculator=new Calculator();
-        //double result=calculator.evaluate(tree.root);
-
-        //tree.traverseInOrder(tree.root);
-        //System.out.println("\nresult="+result);
-        //Integer Integer x equals 5
-    }
+        }
     public static boolean isNumeric(String str) {
     for (char c : str.toCharArray()) {
         if (!Character.isDigit(c)) {return false;}
     }
     return true;
-}
+    }
+    boolean mathematicalexpression(String[] exp)
+    {
+    for(int i=3;i<exp.length;i++)
+    if((i%2==0&&(isNumeric(exp[i])||isValididentifier(exp[i])))||(i%2!=0&&isOperator(exp[i])))return false;
+    return true;
+    }
+    boolean isvalidcond(String[] GO)
+    {
+        int x=GO.length;
+        if (x==2)
+        {if(isValididentifier(GO[1])||isNumeric(GO[1]))return true;return false;}
+        else if(x==4)
+        {if(isValididentifier(GO[1])&&nextTokenType(GO[2])==TokenType.CONDITION&&(isValididentifier(GO[3])||isNumeric(GO[3])))return true;return false;}
+        else return false;
+    }
+    TokenType conditions(String ar)
+    {
+        if(ar.equals("And"))return TokenType.AND;else if (ar.equals("Or"))return TokenType.OR; else if (ar.equals("equals"))return TokenType.EQUALS;
+        else return TokenType.INVALID;
+    }
+    boolean isvalidInt(String[]str)
+    {
+    if(nextTokenType(str[0])==TokenType.INTEGER&&isValididentifier(str[1])&&isOperator(str[2])&&mathematicalexpression(str))
+    return true;
+    else return false;
+    }
     public boolean isDataType(TokenType input)
     {
-       if (input!=TokenType.NUMBER&&input!=TokenType.OPERATOR&&input!=TokenType.CHARACTER)return true;
-       return false;
+    if(input==TokenType.INTEGER||input==TokenType.DOUBLE||input==TokenType.LONG||input==TokenType.CHAR||input==TokenType.STRING)return true;return false;
+    }
+    boolean isLineType(TokenType input)
+    {
+        if(input==TokenType.PRINT||input==TokenType.IF)return true;return false;
     }
     public boolean isOperator(String input)
     {
         return (input.equals("equals")||input.equals('-')||input.equals('+')||input.equals('*')||input.equals('/')
                 ||input.equals("plus")||input.equals("minus")||input.equals("times")||input.equals('=')||input.equals("by"));
     }
+    public boolean isValididentifier(String input)
+    {
+        if(isOperator(input)||isDataType(nextTokenType(input))||isLineType(nextTokenType(input)))return false;return true;
+    }
+    boolean isConditionStatement(String input)
+    {
+        if(input.equals("If"))return true;return false;
+    }
+    boolean isPrintStatement(String input)
+    {
+        if(input.equals("Print")||input.equals("Print Line"))return true;return false;
+    }
     public TokenType nextTokenType(String input)
     {
-    //Character.isAlphabetic(input.charAt(0))
         if(input.equals("Integer"))return TokenType.INTEGER;
-
         else if(input.equals("String"))return TokenType.STRING;
-
         else if(input.equals("Character"))return TokenType.CHAR;
-
         else if(input.equals("Double"))return TokenType.DOUBLE;
-
         else if(input.equals("Long"))return TokenType.LONG;
-
         else if(isNumeric(input))return TokenType.NUMBER;
-
-        else if(input.equals("if"))return TokenType.IF;
-
-        else if(input.equals("Print")||input.equals("Print Line"))return TokenType.PRINT;
-
         else if(input.length()==1)return TokenType.CHARACTER;
-//        else if(Character.isWhitespace(nextChar))
-//        {
-//            return TokenType.WHITESPACE;
-//        }
-        else if (isOperator(input))
-        {
-            return TokenType.OPERATOR;
-        }
-        else
-        {
-            return TokenType.INVALID;
-        }
+        else if(input.equals("If"))return TokenType.IF;
+        else if(input.equals("Print")||input.equals("Print Line"))return TokenType.PRINT;  
+        else if (isOperator(input))return TokenType.OPERATOR;
+        else if(input.equals("Or")||input.equals("And")||input.equals("Equals"))return TokenType.CONDITION;
+        else return TokenType.INVALID;
     }
     public ArrayList<Token> tokenize(String input) throws IOException{
     ArrayList<Token> result = new ArrayList<Token>();
-    String[] tokens=input.split(" ");
     String[] tokens2=input.split("GO");
-    int stop=0;
-//        for(String token:tokens2){
-//            System.out.println(token);}
-
     for(String token:tokens2){
-        System.out.println(token+"\n");
+        System.out.println("\n"+token+"\n");
         String[] GO=token.split(" ");
 try {
     for (int i = 0; i < GO.length; i++) {
         String token2 = GO[i];
-        TokenType k;LineType k2=LineType.ASSIGNMENT;
+        LineType k2;
+        System.out.println(GO[i]);
+
         if (nextTokenType(GO[0])==TokenType.IF)
-        k2=LineType.CONDITION;
+        {
+            k2=LineType.CONDITION;
+            System.out.println("Condition statement");
+        }
+
         else if (isDataType(nextTokenType(GO[0])))
-        k2=LineType.ASSIGNMENT;
+        {
+            k2=LineType.ASSIGNMENT;
+            System.out.println("Assignment statement");
+        }
+
         else if (nextTokenType(GO[0])==TokenType.PRINT)
-        k2=LineType.PRINT;
-        else if(nextTokenType(GO[0])==TokenType.INVALID)k2=LineType.INVALID;
+        {
+            k2=LineType.PRINT;
+            System.out.println("Print statement");
+        }
+
+        else k2=LineType.INVALID;
+
         if(k2==LineType.ASSIGNMENT)
         {
-                if (i == 0 && !isDataType(nextTokenType(token2))) {
-                throw new Exception("Invalid data type declaration.");
-                 }
-                //Character k equals kasfgjasdg
-                else if (nextTokenType(GO[0])==TokenType.CHAR&&nextTokenType(GO[3])!=TokenType.CHARACTER)
+                if (nextTokenType(GO[0])==TokenType.CHAR&&nextTokenType(GO[3])!=TokenType.CHARACTER)
                 {throw new Exception("ERROR! Declared token type should be CHARACTER");}
-                result.add(new Token(token2, nextTokenType(token2)));
+                else if(nextTokenType(GO[0])==TokenType.INTEGER&&!isvalidInt(GO)){throw new Exception("ERROR! Declared Integer assignment invalid");}
+                else {result.add(new Token(token2, nextTokenType(token2)));}
+        }
+        else if(k2==LineType.CONDITION)
+        {
+            if(!isvalidcond(GO)) {throw new Exception("ERROR! INVALID CONDITION STATEMENT");}
         }
     }
 } catch (Exception e) {
     e.printStackTrace();System.exit(1);
 }
 }
-//    for(Token token4:result)
-//    {
-//        System.out.println(token4.tokenValue+" "+token4.tokenType);
-//    }
     return result;
     }
-
-
-//    public ExpressionTree buildExpressionTree(ArrayList<Token> tokens) 
-//    {
-//        ExpressionTree tree = new ExpressionTree();
-//        tree.buildTree(tokens);
-//        return tree;
-//    }
-
+
+
 
 }
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		integer x equals 5
		If x Or GGOInteger X equals 5GO
-Original file line number
+Diff line change
@@ Expand Up / @@ -17,6 +17,10 @@ public enum TokenType @@
         LONG,
         STRING,
         INVALID,
-        IF,
         PRINT,
+        IF,
+        CONDITION,
+        AND,
+        OR,
+        EQUALS,
     }