public static void BuildTigerProgram(string output, InstructionNode programExp)
{
string fileName = Path.GetFileNameWithoutExtension(output);
string exeName = fileName + ".exe";
//Definimos el nombre del ensamblado
AssemblyName assemblyName = new AssemblyName(fileName);
//Creamos un assemblyBuilder con el nombre del ensamblado deseado y en modo save
AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.RunAndSave, Path.GetDirectoryName(output));
ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(fileName, exeName);
TypeBuilder typeBuilder = moduleBuilder.DefineType("TigerProgram", TypeAttributes.Public | TypeAttributes.Class);
MethodBuilder methodBuilder = typeBuilder.DefineMethod("Main", MethodAttributes.Public | MethodAttributes.Static, typeof(int), new Type[0]);
StandardLibrary stdlib = new StandardLibrary(moduleBuilder);
ILGenerator gen = methodBuilder.GetILGenerator();
ILCodeGenerator cg = new ILCodeGenerator(moduleBuilder, typeBuilder, gen, stdlib);
var result = gen.DeclareLocal(typeof(int));
//asigno 0 a result
gen.Emit(OpCodes.Ldc_I4_0);
gen.Emit(OpCodes.Stloc, result);
// Begin the try block.
gen.BeginExceptionBlock();
programExp.GenCode(cg);
if (!(programExp.ReturnType is VoidType))//saco el resultado de la pila
{
gen.Emit(OpCodes.Pop);
}
// Start the catch block for any Exception
gen.BeginCatchBlock(typeof(Exception));
PropertyInfo message = typeof(Exception).GetProperty("Message");
MethodInfo getMessage = message.GetGetMethod();
gen.Emit(OpCodes.Callvirt, getMessage);
MethodInfo writeLine = typeof(Console).GetMethod("WriteLine", new[] { typeof(string) });
gen.Emit(OpCodes.Call, writeLine);
MethodInfo readLine = typeof(Console).GetMethod("ReadLine");
gen.Emit(OpCodes.Call, readLine);
gen.Emit(OpCodes.Pop);
//pongo 1 en result
gen.Emit(OpCodes.Ldc_I4_1);
gen.Emit(OpCodes.Stloc, result);
gen.EndExceptionBlock();
//en result estara el codigo de salida
gen.Emit(OpCodes.Ldloc, result);
gen.Emit(OpCodes.Ret);
typeBuilder.CreateType();
assemblyBuilder.SetEntryPoint(methodBuilder);
assemblyBuilder.Save(exeName);
}
