Virtual Machine

Virtual Machine

The virtual-machine executes the vector of instructions produced by the compiler. The variable memory of the virtual machine is stored in some member variables of the class Cpl::VirtualMachine. These variables are:
  • vector<bool> memBool;
  • vector<double> memDouble;
  • vector<int> memInteger;
  • vector<Sys::MatrixX> memMatrix;
  • vector<valarray<double> > memVector;
  • vector<complex<double> > memComplex;
  • vector<valarray<complex<double> > >memVectorC;
  • vector<MATRIXC> memMatrixC;
  • vector<Nn::LayerNe> memLayerNet;
  • vector<Nn::LayerNetC> memLayerNetC;
  • vector<Nn::KohoNet> memKohoNet;
  • vector<Nn::ProbNet> memProbNet;

Running the virtual machine

To run code in the Wintempla virtual machine, you must:
  1. Call Cpl::VirtualMachine::Setup
  2. Call Cpl::VirtualMachine::ThreadFunc directly, or use a Mt::ThreadObject to call this function in another thread

Problem 1
Create a Wintempla dialog application called MyVirtualMachine to test the Wintempla virtual machine. Using Wintempla add two textboxes (tbxInput and tbxOutput) with the multi-line property, vertical scrollbars and horizontal scrollbar. Set the event of "Change" in the tbxInput textbox. Set also the "Want return" property in the tbxInput textbox.

tbxInputProperties

Scrollbars

ChangeEvent

MyVirtualMachine.cpp
. . .
void MyVirtualMachine::tbxInput_Change(Win::Event& e)
{
     wstring output;
     Cpl::Compiler compiler;
     vector<Cpl::Compiler::Instruction> machineCode;
     //_______________________________________________ Compile
     if (compiler.Compile(tbxInput.Text.c_str(), machineCode) == true)
     {
          compiler.ListCode(machineCode, output);     
     }
     else
     {
          const int count = machineCode.size();
          int line;
          for(int i = 0; i<count; i++)
          {
               if (machineCode[i].type == VM_ERROR)
               {
                    line = machineCode[i].line_number;
                    output += (wchar_t*)machineCode[i].name;
                    break;
               }
          }
          //______________________ Display compilation errors
          tbxOutput.Text = output;
          return;
     }
     //________________________________________________ Execute the machine code
     Cpl::VirtualMachine virtualMachine;
     Mt::ThreadLink threadLink;
     wchar_t text[256];
     virtualMachine.Setup(compiler.variableInfo, machineCode, L"dummy");
     virtualMachine.ThreadFunc(threadLink);
     wchar_t * errorDescr = virtualMachine.GetErrorDescr();
     //_______________________ Display execution errors
     if (errorDescr != NULL)
     {
          tbxOutput.Text = errorDescr;
          return;
     }
     //____________________________________ Display the double values
     const int doubleCount = virtualMachine.memDouble.size();
     output.clear();
     for(int i = 0; i < doubleCount; i++)
     {
          _snwprintf_s(text, 256, L"%s = %g\r\n",
               virtualMachine.GetVariableName(LEX_DATATYPE_DOUBLE, i).c_str(),
               virtualMachine.memDouble[i]);
          output += text;
     }
     tbxOutput.Text = output;
     //____________________________________ Display int values
     //. . .
}

MyVirtualMachineRun

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