// ReSharper disable once SuggestBaseTypeForParameter
/// <code>
/// context{i} => behavior.Invoke(context{i}, context{i+1} => previous)
/// </code>>
static Delegate CreateBehaviorCallDelegate(IBehavior currentBehavior, MethodInfo methodInfo, ParameterExpression outerContextParam, Delegate previous, List <Expression> expressions = null)
{
var body = ExpressionInfo.Call(ExpressionInfo.Constant(currentBehavior), methodInfo, outerContextParam, ExpressionInfo.Constant(previous));
var lambdaExpression = ExpressionInfo.Lambda(body, outerContextParam);
expressions?.Add(lambdaExpression.ToExpression());
return(lambdaExpression.CompileFast());
}
public void Can_assign_to_parameter_via_ExpressionInfo()
{
var sParamExpr = Parameter(typeof(string), "s");
var expr = ExpressionInfo.Lambda <Func <string, string> >(
ExpressionInfo.Assign(sParamExpr, ExpressionInfo.Constant("aaa")),
sParamExpr);
var f = expr.TryCompile();
Assert.IsNotNull(f);
Assert.AreEqual("aaa", f("ignored"));
}
public object CreateExpressionInfo_and_FastCompile()
{
//Expression<Func<Action<string>>> expr = () => a => s.SetValue(a);
var aParam = Expression.Parameter(typeof(string), "a");
var expr = ExpressionInfo.Lambda(
ExpressionInfo.Lambda(
ExpressionInfo.Call(ExpressionInfo.Constant(_s), _setValueMethod, aParam),
aParam
)
);
return(expr.TryCompile <Func <Action <string> > >());
}
public void Nested_Action_using_outer_parameter_and_closed_value()
{
var s = new S();
//Expression<Func<Action<string>>> expr = () => a => s.SetValue(a);
var aParam = Expression.Parameter(typeof(string), "a");
var expr = ExpressionInfo.Lambda(
ExpressionInfo.Lambda(
ExpressionInfo.Call(
ExpressionInfo.Constant(s),
typeof(S).GetTypeInfo().DeclaredMethods.First(m => m.Name == nameof(S.SetValue)),
aParam),
aParam)
);
var f = ExpressionCompiler.TryCompile <Func <Action <string> > >(expr);
f()("a");
Assert.AreEqual("a", s.Value);
}
public static ExpressionInfo <Func <object[], object> > CreateComplexExpressionInfo()
{
var stateParamExpr = Expression.Parameter(typeof(object[]));
var expr = ExpressionInfo.Lambda <Func <object[], object> >(
ExpressionInfo.MemberInit(
ExpressionInfo.New(_ctorOfA,
ExpressionInfo.New(_ctorOfB),
ExpressionInfo.Convert(
ExpressionInfo.ArrayIndex(stateParamExpr, ExpressionInfo.Constant(11)),
typeof(string)),
ExpressionInfo.NewArrayInit(typeof(ID[]),
ExpressionInfo.New(_ctorOfD1),
ExpressionInfo.New(_ctorOfD2))),
ExpressionInfo.Bind(_propAProp,
ExpressionInfo.New(_ctorOfP,
ExpressionInfo.New(_ctorOfB))),
ExpressionInfo.Bind(_fieldABop,
ExpressionInfo.New(_ctorOfB))),
stateParamExpr);
return(expr);
}
/// <code>
/// context{i} => return TaskEx.CompletedTask;
/// </code>>
static Delegate CreateDoneDelegate(Type inContextType, int i)
{
var innerContextParam = ExpressionInfo.Parameter(inContextType, $"context{i + 1}");
return(ExpressionInfo.Lambda(ExpressionInfo.Constant(Task.CompletedTask), innerContextParam).CompileFast());
}
public object NewExpressionInfo()
{
return(ExpressionInfo.New(_xCtor, ExpressionInfo.Constant(_y)));
}
