namespace NormalSwitch
{

using System;
using Benchmark;

delegate int SwitchCase(int x);

class DynamicGeneratedCode {
    // these functions play the role of the dynamic generated code

    public static int add_10(int x)
    {
        return x+10;
    }

    public static int mul_2(int x)
    {
        return x*2;
    }

    public static int sub_3(int x)
    {
        return x-3;
    }
}

class Test {

    public static int interpret(object[] bytecode)
    {
        SwitchCase add_10 = new SwitchCase(DynamicGeneratedCode.add_10);
        SwitchCase mul_2 = new SwitchCase(DynamicGeneratedCode.mul_2);
        SwitchCase sub_3 = new SwitchCase(DynamicGeneratedCode.sub_3);
        
        int accumulator = 0;

        for(int i=0; i<bytecode.Length; i++) {
            object opcode = bytecode[i];
            if (opcode == OpCodes.v_add_10)
                accumulator = add_10(accumulator);
            else if (opcode == OpCodes.v_mul_2)
                accumulator = mul_2(accumulator);
            else if (opcode == OpCodes.v_sub_3)
                accumulator = sub_3(accumulator);
            else
                throw new Exception("invalid opcode");

            //Console.WriteLine("accumulator = {0}", accumulator);
        }
        return accumulator;
    }
}

}