RODL sample (.NET)

Overview

This sample demonstrates two things that could be useful for advanced developers:

  • Parsing a RODL file and getting access to the RODL library object model
  • Generating Interface, Invoker and Implementation code using the same facility as the Service Builder does internally.

Getting started

  • Compile the project. It is a console application.
  • Run the application with the RODL file name passed as a command-line parameter.
  • The RODL file content is displayed on the console.
  • Check the generated code.

Examine the code

  • See how to get library elements in Main.cs file. 
{
  // ...
  Console.WriteLine("Loading "+args[0]);
  Console.WriteLine();

  RodlLibrary lLibrary = new RodlLibrary(args[0]);

  // ...

  Console.WriteLine("Library "+lLibrary.Name);
  Console.WriteLine(lLibrary.Structs.Count+" structs");
  Console.WriteLine(lLibrary.Arrays.Count+" arrays");

  // ...

  foreach (RodlStruct s in lLibrary.Structs)
  {
    Console.WriteLine("Struct "+s.Name);
    foreach (RodlField f in s)
    {
      Console.WriteLine("    Field "+f.Name+" datatype "+f.DataType);
    }
    Console.WriteLine();
  }
  
  // The same loops are for other RODL elements
  
  // ...
}
  • See how to generate code for the selected RODL library (GenerateCode function). Notice that it uses the CodeDomProvider instance to generate the code in the concrete programming language.
// For C# use 
// new Microsoft.CSharp.CSharpCodeProvider() 
// call to obtain a CodeDomProvider instance
static void GenerateCode(RodlLibrary aLibrary, string aFilename, CodeDomProvider aProvider)
{
  string lBase = Path.GetDirectoryName(aFilename);

  string lNamespace = null;
  if (aLibrary.Namespace == null || aLibrary.Namespace == "")
    lNamespace = "Your.Namespace.Here";

  // _Intf code generation
  CodeGen.WriteToFile(
    new CodeGen_Intf().GenerateCompileUnit(aLibrary, lNamespace, true), 
    aProvider, 
    Path.Combine(Path.GetDirectoryName(aFilename), aLibrary.Name+"_Intf."+aProvider.FileExtension));

  // Use the same call to GenerateCompileUnit for invoker, events and services implementation.
  // ...
}

Concepts Covered