public void WithExceptions()
{
var dynamicMethod = new DynamicMethod(Guid.NewGuid().ToString(), typeof(int), new[] { typeof(int), typeof(int) }, typeof(string), true);
using (var il = new GroboIL(dynamicMethod, false))
{
var endLabel = il.DefineLabel("end");
var resultLocal = il.DeclareLocal(typeof(int), "result");
il.BeginExceptionBlock();
il.Ldarg(0);
il.Ldarg(1);
il.Div(false);
il.Stloc(resultLocal);
il.BeginCatchBlock(typeof(DivideByZeroException));
il.Pop();
il.WriteLine("Division by zero caught");
il.Ldc_I4(0);
il.Stloc(resultLocal);
il.BeginFinallyBlock();
il.WriteLine("It is finally");
il.EndExceptionBlock();
il.MarkLabel(endLabel);
il.Ldloc(resultLocal);
il.Ret();
}
DynamicMethodTracingInstaller.InstallTracing(dynamicMethod);
var func = (Func <int, int, int>)dynamicMethod.CreateDelegate(typeof(Func <int, int, int>));
Console.WriteLine(func(12, 5));
Console.WriteLine(func(5, 0));
}
private static void EmitOp(GroboIL il, ExpressionType nodeType, Type type)
{
switch (nodeType)
{
case ExpressionType.Add:
il.Add();
break;
case ExpressionType.AddChecked:
il.Add_Ovf(type.Unsigned());
break;
case ExpressionType.Subtract:
il.Sub();
break;
case ExpressionType.SubtractChecked:
il.Sub_Ovf(type.Unsigned());
break;
case ExpressionType.Multiply:
il.Mul();
break;
case ExpressionType.MultiplyChecked:
il.Mul_Ovf(type.Unsigned());
break;
case ExpressionType.Divide:
il.Div(type.Unsigned());
break;
case ExpressionType.Modulo:
il.Rem(type.Unsigned());
break;
case ExpressionType.LeftShift:
il.Shl();
break;
case ExpressionType.RightShift:
il.Shr(type.Unsigned());
break;
case ExpressionType.And:
il.And();
break;
case ExpressionType.Or:
il.Or();
break;
case ExpressionType.ExclusiveOr:
il.Xor();
break;
default:
throw new NotSupportedException("Node type '" + nodeType + "' is not supported");
}
}
private void TestSuccess(Type type1, Type type2)
{
var method = new DynamicMethod(Guid.NewGuid().ToString(), typeof(void), new[] { type1, type2, }.Where(type => type != null).ToArray(), typeof(string), true);
using (var il = new GroboIL(method))
{
var index = 0;
if (type1 != null)
{
il.Ldarg(index++);
}
else
{
il.Ldnull();
}
if (type2 != null)
{
il.Ldarg(index++);
}
else
{
il.Ldnull();
}
il.Div(true);
il.Pop();
il.Ret();
Console.WriteLine(il.GetILCode());
}
}
private void TestFailure(Type type1, Type type2)
{
var method = new DynamicMethod(Guid.NewGuid().ToString(), typeof(void), new[] { type1, type2, }.Where(type => type != null).ToArray(), typeof(string), true);
var il = new GroboIL(method);
var index = 0;
if (type1 != null)
{
il.Ldarg(index++);
}
else
{
il.Ldnull();
}
if (type2 != null)
{
il.Ldarg(index++);
}
else
{
il.Ldnull();
}
Assert.Throws <InvalidOperationException>(() => il.Div(true));
}