public void LeaveDataOnStackBetweenBranches()
{
var il = Emit <Func <int> > .NewDynamicMethod("LeaveDataOnStackBetweenBranches", doVerify : false);
Sigil.Label b0 = il.DefineLabel("b0"), b1 = il.DefineLabel("b1"), b2 = il.DefineLabel("b2");
il.LoadConstant("abc");
il.Branch(b0); // jump to b0 with "abc"
il.MarkLabel(b1); // incoming: 3
il.LoadConstant(4);
il.Call(typeof(Math).GetMethod("Max", new[] { typeof(int), typeof(int) }));
il.Branch(b2); // jump to b2 with 4
il.MarkLabel(b0); // incoming: "abc"
il.CallVirtual(typeof(string).GetProperty("Length").GetGetMethod());
il.Branch(b1); // jump to b1 with 3
il.MarkLabel(b2); // incoming: 4
il.Return();
int i = il.CreateDelegate()();
Assert.AreEqual(4, i);
}
public void BigSwitch()
{
var e1 = Emit <Func <uint, uint> > .NewDynamicMethod();
// prep labels
var before = e1.DefineLabel();
var first = e1.DefineLabel();
var defaultLabel = e1.DefineLabel();
// prep switch targets
var labels = new Sigil.Label[30];
for (int i = 1; i < labels.Length; i++)
{
labels[i] = defaultLabel;
}
labels[0] = first;
// emit trivial switch
e1.MarkLabel(before);
e1.LoadArgument(0);
e1.Switch(labels);
e1.MarkLabel(defaultLabel);
e1.LoadConstant(0u);
e1.StoreArgument(0);
e1.Branch(before);
e1.MarkLabel(first);
e1.LoadArgument(0);
e1.Return();
var del = e1.CreateDelegate();
Assert.AreEqual(0u, del(42));
}
public void BigSwitch()
{
var e1 = Emit<Func<uint, uint>>.NewDynamicMethod();
// prep labels
var before = e1.DefineLabel();
var first = e1.DefineLabel();
var defaultLabel = e1.DefineLabel();
// prep switch targets
var labels = new Sigil.Label[30];
for (int i = 1; i < labels.Length; i++)
labels[i] = defaultLabel;
labels[0] = first;
// emit trivial switch
e1.MarkLabel(before);
e1.LoadArgument(0);
e1.Switch(labels);
e1.MarkLabel(defaultLabel);
e1.LoadConstant(0u);
e1.StoreArgument(0);
e1.Branch(before);
e1.MarkLabel(first);
e1.LoadArgument(0);
e1.Return();
var del = e1.CreateDelegate();
Assert.AreEqual(0u, del(42));
}
internal ExceptionBlock(Label label)
{
Label = label;
}
