// 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 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_Func_using_outer_parameter()
{
// The same hoisted expression:
//Expression<Func<string, string>> expr = a => GetS(() => a);
var aParam = Expression.Parameter(typeof(string), "a");
var expr = ExpressionInfo.Lambda(
ExpressionInfo.Call(GetType().GetTypeInfo().DeclaredMethods.First(m => m.Name == nameof(GetS)),
ExpressionInfo.Lambda(aParam)),
aParam);
var f = ExpressionCompiler.TryCompile <Func <string, string> >(expr);
Assert.AreEqual("a", f("a"));
}
public void Can_compile_lambda_with_call_and_property()
{
var thisType = GetType().GetTypeInfo();
var funcExpr =
ExpressionInfo.Lambda(
ExpressionInfo.Call(thisType.GetMethod(nameof(GetX)),
ExpressionInfo.Property(thisType.GetProperty(nameof(PropX)))));
var func = ExpressionCompiler.TryCompile <Func <X> >(funcExpr);
Assert.IsNotNull(func);
var x = func();
Assert.IsInstanceOf <X>(x);
}
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);
}
