本文整理汇总了C#中System.Dynamic.DynamicMetaObject.Take方法的典型用法代码示例。如果您正苦于以下问题：C# DynamicMetaObject.Take方法的具体用法？C# DynamicMetaObject.Take怎么用？C# DynamicMetaObject.Take使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Dynamic.DynamicMetaObject的用法示例。
在下文中一共展示了DynamicMetaObject.Take方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: FallbackCreateInstance
public override DynamicMetaObject FallbackCreateInstance(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion)
{
bool flag;
Type type = (Type) target.Value;
MethodInformation[] methodInformationArray = DotNetAdapter.GetMethodInformationArray(type.GetConstructors());
target = new DynamicMetaObject(target.Expression, BindingRestrictions.GetInstanceRestriction(target.Expression, target.Value), target.Value);
string errorId = null;
string errorMsg = null;
int count = base.CallInfo.ArgumentCount - base.CallInfo.ArgumentNames.Count;
MethodInformation information = Adapter.FindBestMethod(methodInformationArray, null, (from arg in args.Take<DynamicMetaObject>(count) select arg.Value).ToArray<object>(), ref errorId, ref errorMsg, out flag);
if (information == null)
{
if (errorSuggestion == null)
{
}
return new DynamicMetaObject(Expression.Throw(Expression.New(CachedReflectionInfo.MethodException_ctor, new Expression[] { Expression.Constant(errorId), Expression.Constant(null, typeof(Exception)), Expression.Constant(errorMsg), Expression.NewArrayInit(typeof(object), new Expression[] { Expression.Constant(".ctor").Cast(typeof(object)), ExpressionCache.Constant(count).Cast(typeof(object)) }) }), this.ReturnType), target.CombineRestrictions(args));
}
ConstructorInfo method = (ConstructorInfo) information.method;
ParameterInfo[] parameters = method.GetParameters();
Expression[] arguments = new Expression[parameters.Length];
int index = 0;
while (index < parameters.Length)
{
bool flag3;
Type parameterType = parameters[index].ParameterType;
if (parameters[index].GetCustomAttributes(typeof(ParamArrayAttribute), true).Any<object>() && flag)
{
Type elementType = parameters[index].ParameterType.GetElementType();
List<Expression> initializers = new List<Expression>();
int num3 = index;
int num4 = index;
while (num4 < count)
{
bool flag2;
LanguagePrimitives.ConversionData data = LanguagePrimitives.FigureConversion(args[index].Value, elementType, out flag2);
initializers.Add(PSConvertBinder.InvokeConverter(data, args[num4].Expression, elementType, flag2, ExpressionCache.InvariantCulture));
num4++;
index++;
}
arguments[num3] = Expression.NewArrayInit(elementType, initializers);
break;
}
LanguagePrimitives.ConversionData conversion = LanguagePrimitives.FigureConversion(args[index].Value, parameterType, out flag3);
arguments[index] = PSConvertBinder.InvokeConverter(conversion, args[index].Expression, parameterType, flag3, ExpressionCache.InvariantCulture);
index++;
}
Expression right = Expression.New(method, arguments);
if (base.CallInfo.ArgumentNames.Any<string>())
{
ParameterExpression expr = Expression.Parameter(right.Type);
List<Expression> expressions = new List<Expression>();
foreach (string str3 in base.CallInfo.ArgumentNames)
{
Expression expression3;
Type propertyType;
bool flag4;
MemberInfo[] infoArray3 = type.GetMember(str3, MemberTypes.Property | MemberTypes.Field, BindingFlags.FlattenHierarchy | BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
if ((infoArray3.Length != 1) || (!(infoArray3[0] is PropertyInfo) && !(infoArray3[0] is FieldInfo)))
{
return target.ThrowRuntimeError(args, BindingRestrictions.Empty, "PropertyNotFoundForType", ParserStrings.PropertyNotFoundForType, new Expression[] { Expression.Constant(str3), Expression.Constant(type) });
}
MemberInfo info2 = infoArray3[0];
if (info2 is PropertyInfo)
{
PropertyInfo property = (PropertyInfo) info2;
if (property.GetSetMethod() == null)
{
return target.ThrowRuntimeError(args, BindingRestrictions.Empty, "PropertyIsReadOnly", ParserStrings.PropertyIsReadOnly, new Expression[] { Expression.Constant(str3) });
}
propertyType = property.PropertyType;
expression3 = Expression.Property(expr.Cast(info2.DeclaringType), property);
}
else
{
propertyType = ((FieldInfo) info2).FieldType;
expression3 = Expression.Field(expr.Cast(info2.DeclaringType), (FieldInfo) info2);
}
LanguagePrimitives.ConversionData data3 = LanguagePrimitives.FigureConversion(args[index].Value, propertyType, out flag4);
if (data3.Rank == ConversionRank.None)
{
return PSConvertBinder.ThrowNoConversion(args[index], propertyType, this, -1, args.Except<DynamicMetaObject>(new DynamicMetaObject[] { args[index] }).Prepend<DynamicMetaObject>(target).ToArray<DynamicMetaObject>());
}
expressions.Add(Expression.Assign(expression3, PSConvertBinder.InvokeConverter(data3, args[index].Expression, propertyType, flag4, ExpressionCache.InvariantCulture)));
index++;
}
ParameterExpression variable = Expression.Parameter(typeof(Exception));
BlockExpression expression5 = Expression.Block(Expression.Assign(expr, right), Expression.TryCatch(Expression.Block(typeof(void), expressions), new CatchBlock[] { Expression.Catch(variable, Expression.Block(Expression.Call(CachedReflectionInfo.CommandProcessorBase_CheckForSevereException, variable), Compiler.ThrowRuntimeErrorWithInnerException("PropertyAssignmentException", Expression.Property(variable, "Message"), variable, typeof(void), new Expression[0]))) }), expr);
right = Expression.Block(new ParameterExpression[] { expr }, new Expression[] { expression5 });
}
return new DynamicMetaObject(right, target.CombineRestrictions(args));
}