protected override Type ResolveInternal(Context ctx, bool mustReturn)
{
ResolveSelf(ctx);
if (_type != null)
{
CheckTypeInSafeMode(ctx, _type);
}
if (Expression != null && Expression.Resolve(ctx).IsArray&& MemberName == "Length")
{
return(typeof(int));
}
if (_field != null)
{
return(_field.FieldType);
}
if (_property != null)
{
return(_property.PropertyType);
}
return(_method.ReturnType.IsVoid()
? FunctionalHelper.CreateActionType(_method.ArgumentTypes)
: FunctionalHelper.CreateFuncType(_method.ReturnType, _method.ArgumentTypes));
}
public void CreateActionTypeTest()
{
Assert.AreEqual(
typeof(Action <int, string, TimeSpan>),
FunctionalHelper.CreateActionType(typeof(int), typeof(string), typeof(TimeSpan))
);
Assert.AreEqual(typeof(Action), FunctionalHelper.CreateActionType());
Assert.Throws <LensCompilerException>(() => FunctionalHelper.CreateActionType(new Type[20]));
}
/// <summary>
/// Emits code for getting the method as a delegate instance.
/// </summary>
private void EmitMethod(Context ctx, ILGenerator gen)
{
if (RefArgumentRequired)
{
Error(CompilerMessages.MethodRef);
}
if (_isStatic)
{
gen.EmitNull();
}
var retType = _method.ReturnType;
var type = retType.IsVoid()
? FunctionalHelper.CreateActionType(_method.ArgumentTypes)
: FunctionalHelper.CreateFuncType(retType, _method.ArgumentTypes);
var ctor = ctx.ResolveConstructor(type, new[] { typeof(object), typeof(IntPtr) });
gen.EmitLoadFunctionPointer(_method.MethodInfo);
gen.EmitCreateObject(ctor.ConstructorInfo);
}