public static New ( |
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constructor | The |
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arguments | IEnumerable |
An |
Résultat |
public static NewExpression New(ConstructorInfo constructor, IEnumerable<Expression> arguments)
{
ContractUtils.RequiresNotNull(constructor, nameof(constructor));
ContractUtils.RequiresNotNull(constructor.DeclaringType, nameof(constructor) + "." + nameof(constructor.DeclaringType));
TypeUtils.ValidateType(constructor.DeclaringType, nameof(constructor));
ValidateConstructor(constructor, nameof(constructor));
ReadOnlyCollection<Expression> argList = arguments.ToReadOnly();
ValidateArgumentTypes(constructor, ExpressionType.New, ref argList, nameof(constructor));
return new NewExpression(constructor, argList, null);
}
private static Func <int[], int[]> GenerateCopyExpression() { var ctor = typeof(int[]).GetConstructor(new[] { typeof(int) }); var get = typeof(int[]).GetMethod("Get", new[] { typeof(int) }); var set = typeof(int[]).GetMethod("Set", new[] { typeof(int), typeof(int) }); var p1 = Exp.Parameter(typeof(int[])); var v1 = Exp.Variable(typeof(int[])); var v2 = Exp.Variable(typeof(int)); var @break = Exp.Label(); var block = Exp.Block( new[] { v1, v2 }, Exp.Assign(v1, Exp.New(ctor, Exp.Property(p1, "Length"))), Exp.Assign(v2, Exp.Constant(0)), Exp.Loop( Exp.IfThenElse( Exp.LessThan(v2, Exp.Property(p1, "Length")), Exp.Block( Exp.Call(v1, set, v2, Exp.Call(p1, get, v2)), Exp.AddAssign(v2, Exp.Constant(1)) ), Exp.Break(@break) ), @break), v1 ); return(Exp.Lambda <Func <int[], int[]> >(block, new ParameterExpression[] { p1 }).Compile()); }