SDF_project_1/MyInfArith.java at master · Levistus71/SDF_project_1 · GitHub

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import arbitraryarithmetic.AFloat;
import arbitraryarithmetic.AInteger;

public class MyInfArith {
    public static void main(String[] args){
        if(args.length!=4){
            System.out.println("Incorrect usage.");
            System.out.println("Usage: <int/float> <operation> <number1> <number2>");
            System.exit(1);
        }

        boolean int_ops = false;
        boolean float_ops = false;
        if(args[0].equals("int")){
            int_ops = true;
            float_ops = false;
        } else if(args[0].equals("float")){
            int_ops = false;
            float_ops = true;
        } else{
            System.out.println("Unexpected argument at position : 0 (expected only 'int' or 'float')");
            System.exit(1);
        }

        boolean add = false;
        boolean multiply = false;
        boolean subtract = false;

        if(args[1].equals("add")){
            add = true;
        } else if(args[1].equals("subtract")){
            subtract = true;
        } else if(args[1].equals("multiply")){
            multiply = true;
        } else if(args[1].equals("divide")){
            //do nothing
        } else{
            System.out.println("Unexpected argument at position : 1 (expected 'add', 'subtract', 'multiply' or 'divide')");
            System.exit(1);
        }

        if(int_ops){
            AInteger num1 = new AInteger(args[2]);
            AInteger num2 = new AInteger(args[3]);

            AInteger result;
            if(add){
                result = num1.add(num2);
            } else if(subtract){
                result = num1.sub(num2);
            } else if(multiply){
                result = num1.multiply(num2);
            } else {
                result = num1.divide(num2);
            }

            result.print_int();
        } else if(float_ops){
            AFloat num1 = new AFloat(args[2]);
            AFloat num2 = new AFloat(args[3]);

            AFloat result;
            if(add){
                result = num1.add(num2);
            } else if(subtract){
                result = num1.sub(num2);
            } else if(multiply){
                result = num1.multiply(num2);
            } else {
                result = num1.divide(num2);
            }

            result.print_float();
        }
    }
}