using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using Indy.IL2CPU.IL;
using Indy.IL2CPU.Plugs;
using CPUx86 = Cosmos.IL2CPU.X86;
using Cosmos.IL2CPU.X86.IL;
using CPU = Cosmos.IL2CPU;
using MethodBase = System.Reflection.MethodBase;
using Cosmos.IL2CPU;

namespace Indy.IL2CPU.X86.Plugs.NEW_PLUGS {
  public class InvokeImplAssembler: AssemblerMethod {
    public override void Assemble(Indy.IL2CPU.Assembler.Assembler aAssembler) {
      throw new NotImplementedException();
    }

    private uint GetArgumentStartOffset(MethodBase aMethod, int aArgument) {
      return 0;
    }

    public override void AssembleNew(object aAssembler, object aMethodInfo) {
      //// param 0 is instance of eventhandler
      //// param 1 is sender
      //// param 2 is eventargs
      ////Ldarg.Ldfld(aAssembler, aMethodInfo.TypeInfo, "System.Object System.Delegate._target");
      ////new Label(".LoadMethodParams");
      ////for (int i = 1; i < aMethodInfo.Arguments.Length; i++) {
      ////    Ldarg.Ldarg(aAssembler, aMethodInfo.Arguments[i]);
      ////}
      ////new Label(".LoadMethodPointer");
      ////Ldarg.Ldarg(aAssembler, aMethodInfo.Arguments[0]);
      ////Ldarg.Ldfld(aAssembler, aMethodInfo.TypeInfo, "System.IntPtr System.Delegate._methodPtr");
      ////new CPUx86.Pop("eax");
      ////new CPUx86.Call(CPUx86.Registers_Old.EAX);
      ////new CPUx86.Add("esp",
      ////               "4");
      ///*
      // * EAX contains the GetInvocationList() array at the index at which it was last used
      // * EDX contains the index at which the EAX is
      // * EBX contains the number of items in the array
      // * ECX contains the argument size
      // */
      //new CPU.Label("____DEBUG_FOR_MULTICAST___");
      ////            new CPUx86.Cli();//DEBUG ONLY
      ////#warning reenable interupts when issue is fixed!!!
      //new CPU.Comment("move address of delgate to eax");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EAX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = GetArgumentStartOffset(a MethodInfo.Arguments[0].VirtualAddresses[0] };
      //var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
      //new CPU.Comment("push address of delgate to stack");
      //new CPUx86.Push { DestinationReg = CPUx86.Registers.EAX };//addrof this
      //new CPUx86.Call { DestinationLabel = CPU.MethodInfoLabelGenerator.GenerateLabelName(xGetInvocationListMethod) };
      //new CPU.Comment("get address from return value -> eax");
      //new CPUx86.Pop { DestinationReg = CPUx86.Registers.EAX };
      //;//list
      //new CPU.Comment("eax+=8 is where the offset where an array's count is");
      //new CPUx86.Add { DestinationReg = CPUx86.Registers.EAX, SourceValue = 8 };//addrof list.count??
      //new CPU.Comment("store count in ebx");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EBX, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true };//list.count
      //new CPU.Comment("eax+=8 is where the offset where an array's items start");
      //new CPUx86.Add { DestinationReg = CPUx86.Registers.EAX, SourceValue = 8 };//why? -- start of list i think? MtW: the array's .Length is at +8
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceValue = 0 };
      //new CPU.Comment("ecx = ptr to delegate object");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = MethodInfo.Arguments[0].VirtualAddresses[0] };//addrof the delegate
      //new CPU.Comment("ecx points to the size of the delegated methods arguments");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.ECX, SourceReg = CPUx86.Registers.ECX, SourceIsIndirect = true, SourceDisplacement = (MethodInfo.Arguments[0].TypeInfo.Fields["$$ArgSize$$"].Offset + 12) };//the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
      //new CPUx86.Xor { DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX };
      //;//make sure edx is 0
      //new CPU.Label(".BEGIN_OF_LOOP");
      //new CPUx86.Compare { DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBX };//are we at the end of this list
      //new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".END_OF_INVOKE_" };//then we better stop
      ////new CPUx86.Compare("edx", 0);
      ////new CPUx86.JumpIfLessOrEqual(".noreturnYet");
      ////new CPUx86.Add("esp", 4);
      ////new CPU.Label(".noreturnYet");
      ////new CPU.Comment("space for the return value");
      ////new CPUx86.Pushd("0");
      //new CPUx86.Pushad();
      //new CPU.Comment("esi points to where we will copy the methods argumetns from");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.ESI, SourceReg = CPUx86.Registers.ESP };
      //new CPU.Comment("edi = ptr to delegate object");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = MethodInfo.Arguments[0].VirtualAddresses[0] };
      //new CPU.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = (MethodInfo.Arguments[0].TypeInfo.Fields["System.Object System.Delegate._target"].Offset + 12) };//i really dont get the +12. MtW: +12 because of extra header of the type (object type, object id, field count)
      //new CPUx86.Compare { DestinationReg = CPUx86.Registers.EDI, SourceValue = 0 };
      //new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Zero, DestinationLabel = ".NO_THIS" };
      //new CPUx86.Push { DestinationReg = Registers.EDI };

      //new CPU.Label(".NO_THIS");

      //new CPU.Comment("make space for us to copy the arguments too");
      //new CPUx86.Sub { DestinationReg = CPUx86.Registers.ESP, SourceReg = CPUx86.Registers.ECX };
      //new CPU.Comment("move the current delegate to edi");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EAX, SourceIsIndirect = true };
      //new CPU.Comment("move the methodptr from that delegate to edi ");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = (MethodInfo.Arguments[0].TypeInfo.Fields["System.IntPtr System.Delegate._methodPtr"].Offset + 12) };//
      //new CPU.Comment("save methodptr on the stack");
      //new CPUx86.Push { DestinationReg = Registers.EDI };
      //new CPU.Comment("move location to copy args to");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.ESP };
      //new CPU.Comment("get above the saved methodptr");
      //new CPUx86.Add { DestinationReg = Registers.EDI, SourceValue = 4 };
      ////we allocated the argsize on the stack once, and it we need to get above the original args
      //new CPU.Comment("we allocated argsize on the stack once");
      //new CPU.Comment("add 32 for the Pushad + 16 for the current stack + 4 for the return value");
      //new CPUx86.Add { DestinationReg = Registers.ESI, SourceValue = 52 };
      //new CPUx86.Movs { Size = 8, Prefixes = InstructionPrefixes.Repeat };
      //new CPUx86.Pop { DestinationReg = CPUx86.Registers.EDI };
      //new CPUx86.Call { DestinationReg = CPUx86.Registers.EDI };
      //new CPU.Comment("store return -- return stored into edi after popad");
      ////new CPUx86.Move("edx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
      ////new CPUx86.Move("edx", "[edx+" + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ReturnsValue$$"].Offset + 12) + "]");
      ////new CPUx86.Compare(Registers_Old.EDX, 0);
      ////new CPUx86.JumpIfEqual(".getReturn");
      ////new CPUx86.Move(Registers_Old.EAX, "[esp]");
      ////new CPUx86.Move("[esp+0x20]", Registers_Old.EAX);
      ////new CPU.Label(".getReturn");
      //new CPU.Comment("edi = ptr to delegate object");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = MethodInfo.Arguments[0].VirtualAddresses[0] };
      //new CPU.Comment("edi = ptr to delegate object should be a pointer to the delgates context ie (this) for the methods ");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDI, SourceReg = CPUx86.Registers.EDI, SourceIsIndirect = true, SourceDisplacement = (MethodInfo.Arguments[0].TypeInfo.Fields["System.Object System.Delegate._target"].Offset + 12) };//i really dont get the +12, MtW: that's for the object header
      ////new CPUx86.Compare("edi", "0");
      ////new CPUx86.JumpIfEqual(".noTHIStoPop");
      ////new CPUx86.Move("edx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
      ////new CPUx86.Move("edx", "[edx+" + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ReturnsValue$$"].Offset + 12) + "]");
      ////new CPUx86.Compare(Registers_Old.EDX, 0);
      ////new JumpIfNotEqual(".needToPopThis");
      ////new CPU.Comment("ecx = ptr to delegate object");
      ////new CPUx86.Move("ecx", "[" + MethodInfo.Arguments[0].VirtualAddresses[0] + "]");//addrof the delegate
      ////new CPU.Comment("ecx points to the size of the delegated methods arguments");
      ////new CPUx86.Move("ecx", "[ecx + " + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ArgSize$$"].Offset + 12) + "]");//the size of the arguments to the method? + 12??? -- 12 is the size of the current call stack.. i think
      ////new CPUx86.Compare("ecx", "0");
      ////new CPUx86.JumpIfLessOrEqual(".noTHIStoPop");
      ////new CPU.Label(".needToPopThis");
      ////new CPUx86.Pop("edi");
      ////new CPUx86.Move("[esp]", "edi");
      //new CPU.Label(".noTHIStoPop");
      //new CPUx86.Popad();
      //new CPUx86.Inc { DestinationReg = Registers.EDX };
      //new CPUx86.Add { DestinationReg = Registers.EAX, SourceValue = 4 };
      //new CPUx86.Jump { DestinationLabel = ".BEGIN_OF_LOOP" };
      //new CPU.Label(".END_OF_INVOKE_");
      //new CPU.Comment("get the return value");
      ////new CPUx86.Pop("eax");
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EBP, SourceIsIndirect = true, SourceDisplacement = MethodInfo.Arguments[0].VirtualAddresses[0] };//addrof the delegate
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.EDX, SourceReg = CPUx86.Registers.EDX, SourceIsIndirect = true, SourceDisplacement = (MethodInfo.Arguments[0].TypeInfo.Fields["$$ReturnsValue$$"].Offset + 12) };
      //new CPUx86.Compare { DestinationReg = Registers.EDX, SourceValue = 0 };
      //new CPUx86.ConditionalJump { Condition = CPUx86.ConditionalTestEnum.Equal, DestinationLabel = ".noReturn" };
      ////may have to expand the return... idk
      //new CPUx86.Xchg { DestinationReg = Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 8, SourceReg = Registers.EDX };
      //new CPUx86.Xchg { DestinationReg = Registers.EBP, DestinationIsIndirect = true, DestinationDisplacement = 4, SourceReg = Registers.EDX };
      //new CPUx86.Xchg { DestinationReg = Registers.EBP, DestinationIsIndirect = true, SourceReg = Registers.EDX };
      //new CPUx86.Push { DestinationReg = Registers.EDX };//ebp
      //new CPUx86.Move { DestinationReg = CPUx86.Registers.ESP, DestinationIsIndirect = true, DestinationDisplacement = 12, SourceReg = CPUx86.Registers.EDI };
      //new CPU.Label(".noReturn");
      ////            new CPUx86.Sti();
      ////#warning remove this ^ sti call when issue is fixed!!!
      ////MethodInfo.Arguments[0].
      ////            new CPUx86.Move("ebx", "[eax + " + (MethodInfo.Arguments[0].TypeInfo.Fields["$$ArgSize$$"].Offset + 12) + "]");

      ////new CPUx86.Move("eax", CPUx86.Registers_Old.
      ////var xGetInvocationListMethod = typeof(MulticastDelegate).GetMethod("GetInvocationList");
      ////xGetInvocationListMethod = typeof(Delegate).GetMethod("GetInvocationList");

      ////							new CPUx86.Pop(CPUx86.Registers_Old.EAX);
      ////new CPUx86.Move("esp", "ebp");
      
      new CPUx86.Push {
        DestinationRef = ElementReference.New(LdStr.GetContentsArrayName("Events not yet implemented"))
      };
      new CPUx86.Call {
        DestinationLabel = MethodInfoLabelGenerator.GenerateLabelName(typeof(ExceptionHelper).GetMethod("ThrowNotImplemented", BindingFlags.Static | BindingFlags.Public))
      };

      }
  }
}