using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection.Emit;
using System.Text;

namespace Sunweaver.DataPrototypes
{
    public class Locals
    {
        private Dictionary<Type, Dictionary<int, LocalBuilder>> locals;
        private ILGenerator il;

        public Locals(ILGenerator ilGen)
        {
            locals = new Dictionary<Type, Dictionary<int, LocalBuilder>>();
            il = ilGen;
        }

        public LocalBuilder this[Type t, int i]
        {
            get
            {
                LocalBuilder retval;

                if (locals.ContainsKey(t))
                {
                    if (locals[t].ContainsKey(i))
                    {
                        return locals[t][i];
                    }
                    else
                    {
                        retval = il.DeclareLocal(t);
                        locals[t][i] = retval;
                        return retval;
                    }
                }
                else
                {
                    retval = il.DeclareLocal(t);
                    locals[t] = new Dictionary<int, LocalBuilder>();
                    locals[t][i] = retval;
                    return retval;
                }
            }
        }

        public LocalBuilder this[Type t]
        {
            get
            {
                return this[t, 0];
            }
        }
    }
}