| public abstract ReorderArgumentArray ( Array &args, object state ) : void | ||
| args | Array | |
| state | object | |
| return | void | |
public override object InvokeMember (string name, BindingFlags invokeAttr,
Binder binder, object target, object[] args,
ParameterModifier[] modifiers,
CultureInfo culture, string[] namedParameters)
{
const string bindingflags_arg = "bindingFlags";
if ((invokeAttr & BindingFlags.CreateInstance) != 0) {
if ((invokeAttr & (BindingFlags.GetField |
BindingFlags.GetField | BindingFlags.GetProperty |
BindingFlags.SetProperty)) != 0)
throw new ArgumentException (bindingflags_arg);
} else if (name == null)
throw new ArgumentNullException ("name");
if ((invokeAttr & BindingFlags.GetField) != 0 && (invokeAttr & BindingFlags.SetField) != 0)
throw new ArgumentException ("Cannot specify both Get and Set on a field.", bindingflags_arg);
if ((invokeAttr & BindingFlags.GetProperty) != 0 && (invokeAttr & BindingFlags.SetProperty) != 0)
throw new ArgumentException ("Cannot specify both Get and Set on a property.", bindingflags_arg);
if ((invokeAttr & BindingFlags.InvokeMethod) != 0) {
if ((invokeAttr & BindingFlags.SetField) != 0)
throw new ArgumentException ("Cannot specify Set on a field and Invoke on a method.", bindingflags_arg);
if ((invokeAttr & BindingFlags.SetProperty) != 0)
throw new ArgumentException ("Cannot specify Set on a property and Invoke on a method.", bindingflags_arg);
}
if ((namedParameters != null) && ((args == null) || args.Length < namedParameters.Length))
throw new ArgumentException ("namedParameters cannot be more than named arguments in number");
if ((invokeAttr & (BindingFlags.InvokeMethod|BindingFlags.CreateInstance|BindingFlags.GetField|BindingFlags.SetField|BindingFlags.GetProperty|BindingFlags.SetProperty)) == 0)
throw new ArgumentException ("Must specify binding flags describing the invoke operation required.", bindingflags_arg);
/* set some defaults if none are provided :-( */
if ((invokeAttr & (BindingFlags.Public|BindingFlags.NonPublic)) == 0)
invokeAttr |= BindingFlags.Public;
if ((invokeAttr & (BindingFlags.Static|BindingFlags.Instance)) == 0)
invokeAttr |= BindingFlags.Static|BindingFlags.Instance;
if (binder == null)
binder = Binder.DefaultBinder;
if ((invokeAttr & BindingFlags.CreateInstance) != 0) {
/* the name is ignored */
invokeAttr |= BindingFlags.DeclaredOnly;
ConstructorInfo[] ctors = GetConstructors (invokeAttr);
object state = null;
MethodBase ctor = binder.BindToMethod (invokeAttr, ctors, ref args, modifiers, culture, namedParameters, out state);
if (ctor == null) {
if (this.IsValueType && args == null)
return Activator.CreateInstanceInternal (this);
throw new MissingMethodException ("Constructor on type '" + FullName + "' not found.");
}
object result = ctor.Invoke (target, invokeAttr, binder, args, culture);
binder.ReorderArgumentArray (ref args, state);
return result;
}
if (name == String.Empty && Attribute.IsDefined (this, typeof (DefaultMemberAttribute))) {
DefaultMemberAttribute attr = (DefaultMemberAttribute) Attribute.GetCustomAttribute (this, typeof (DefaultMemberAttribute));
name = attr.MemberName;
}
bool ignoreCase = (invokeAttr & BindingFlags.IgnoreCase) != 0;
string throwMissingMethodDescription = null;
bool throwMissingFieldException = false;
if ((invokeAttr & BindingFlags.InvokeMethod) != 0) {
MethodInfo[] methods = GetMethodsByName (name, invokeAttr, ignoreCase, this);
object state = null;
if (args == null)
args = EmptyArray<object>.Value;
MethodBase m = binder.BindToMethod (invokeAttr, methods, ref args, modifiers, culture, namedParameters, out state);
if (m == null) {
if (methods.Length > 0)
throwMissingMethodDescription = "The best match for method " + name + " has some invalid parameter.";
else
throwMissingMethodDescription = "Cannot find method " + name + ".";
} else {
ParameterInfo[] parameters = m.GetParameters();
for (int i = 0; i < parameters.Length; ++i) {
if (System.Reflection.Missing.Value == args [i] && (parameters [i].Attributes & ParameterAttributes.HasDefault) != ParameterAttributes.HasDefault)
throw new ArgumentException ("Used Missing.Value for argument without default value", "parameters");
}
object result = m.Invoke (target, invokeAttr, binder, args, culture);
binder.ReorderArgumentArray (ref args, state);
return result;
}
}
if ((invokeAttr & BindingFlags.GetField) != 0) {
FieldInfo f = GetField (name, invokeAttr);
if (f != null) {
return f.GetValue (target);
} else if ((invokeAttr & BindingFlags.GetProperty) == 0) {
throwMissingFieldException = true;
}
/* try GetProperty */
} else if ((invokeAttr & BindingFlags.SetField) != 0) {
FieldInfo f = GetField (name, invokeAttr);
if (f != null) {
if (args == null)
throw new ArgumentNullException ("providedArgs");
if ((args == null) || args.Length != 1)
throw new ArgumentException ("Only the field value can be specified to set a field value.", bindingflags_arg);
f.SetValue (target, args [0]);
return null;
} else if ((invokeAttr & BindingFlags.SetProperty) == 0) {
throwMissingFieldException = true;
}
/* try SetProperty */
}
if ((invokeAttr & BindingFlags.GetProperty) != 0) {
PropertyInfo[] properties = GetPropertiesByName (name, invokeAttr, ignoreCase, this);
object state = null;
int i, count = 0;
for (i = 0; i < properties.Length; ++i) {
if ((properties [i].GetGetMethod (true) != null))
count++;
}
MethodBase[] smethods = new MethodBase [count];
count = 0;
for (i = 0; i < properties.Length; ++i) {
MethodBase mb = properties [i].GetGetMethod (true);
if (mb != null)
smethods [count++] = mb;
}
MethodBase m = binder.BindToMethod (invokeAttr, smethods, ref args, modifiers, culture, namedParameters, out state);
if (m == null) {
throwMissingFieldException = true;
} else {
object result = m.Invoke (target, invokeAttr, binder, args, culture);
binder.ReorderArgumentArray (ref args, state);
return result;
}
} else if ((invokeAttr & BindingFlags.SetProperty) != 0) {
PropertyInfo[] properties = GetPropertiesByName (name, invokeAttr, ignoreCase, this);
object state = null;
int i, count = 0;
for (i = 0; i < properties.Length; ++i) {
if (properties [i].GetSetMethod (true) != null)
count++;
}
MethodBase[] smethods = new MethodBase [count];
count = 0;
for (i = 0; i < properties.Length; ++i) {
MethodBase mb = properties [i].GetSetMethod (true);
if (mb != null)
smethods [count++] = mb;
}
MethodBase m = binder.BindToMethod (invokeAttr, smethods, ref args, modifiers, culture, namedParameters, out state);
if (m == null) {
throwMissingFieldException = true;
} else {
object result = m.Invoke (target, invokeAttr, binder, args, culture);
binder.ReorderArgumentArray (ref args, state);
return result;
}
}
if (throwMissingMethodDescription != null)
throw new MissingMethodException(throwMissingMethodDescription);
if (throwMissingFieldException)
throw new MissingFieldException("Cannot find variable " + name + ".");
return null;
}
public override void ReorderArgumentArray(ref object[] args, object state)
{
_binder.ReorderArgumentArray(ref args, state);
}
internal Object CreateInstanceImpl(BindingFlags bindingAttr,
Binder binder,
Object[] args,
CultureInfo culture,
Object[] activationAttributes)
{
Object server = null;
try
{
// Store the activation attributes in thread local storage.
// These attributes are later picked up by specialized
// activation services like remote activation services to
// influence the activation.
if(null != activationAttributes)
{
ActivationServices.ActivationAttributes = activationAttributes;
}
if (args == null)
args = new Object[0];
int argCnt = args.Length;
// Without a binder we need to do use the default binder...
if (binder == null)
binder = DefaultBinder;
// deal with the __COMObject case first. It is very special because from a reflection point of view it has no ctors
// so a call to GetMemberCons would fail
if (argCnt == 0 && (bindingAttr & BindingFlags.Public) != 0 && (bindingAttr & BindingFlags.Instance) != 0
&& (IsGenericCOMObjectImpl() || IsSubclassOf(RuntimeType.valueType))) {
server = CreateInstanceImpl(((bindingAttr & BindingFlags.NonPublic) != 0) ? false : true);
}
else {
bool isDelegate;
MethodBase[] cons = GetMemberCons(bindingAttr,
CallingConventions.Any,
null,
argCnt,
false,
/*binder == DefaultBinder, */
out isDelegate);
if (cons == null)
throw new MissingMethodException(String.Format(Environment.GetResourceString("MissingConstructor_Name"), FullName));
// It would be strange to have an argCnt of 0 and more than
// one constructor.
if (argCnt == 0 && cons.Length == 1 && (bindingAttr & BindingFlags.OptionalParamBinding) == 0)
server = Activator.CreateInstance(this, true);
else
{
// MethodBase invokeMethod = binder.BindToMethod(cons,args,null,null,culture);
MethodBase invokeMethod;
Object state;
invokeMethod = binder.BindToMethod(bindingAttr,cons,ref args,null,culture,null, out state);
if (invokeMethod == null)
throw new MissingMethodException(String.Format(Environment.GetResourceString("MissingConstructor_Name"), FullName));
// If we're creating a delegate, we're about to call a
// constructor taking an integer to represent a target
// method. Since this is very difficult (and expensive)
// to verify, we're just going to demand UnmanagedCode
// permission before allowing this. Partially trusted
// clients can instead use Delegate.CreateDelegate,
// which allows specification of the target method via
// name or MethodInfo.
if (isDelegate)
new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Demand();
server = ((ConstructorInfo) invokeMethod).Invoke(bindingAttr,binder,args,culture);
if (state != null)
binder.ReorderArgumentArray(ref args, state);
}
}
}
finally
{
// Reset the TLS to null
if(null != activationAttributes)
{
ActivationServices.ActivationAttributes = null;
}
}
return server;
}
public static object CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, object[] args, CultureInfo culture, object[] activationAttributes)
{
if (type == null)
throw new ArgumentNullException(nameof(type));
// If they didn't specify a lookup, then we will provide the default lookup.
const BindingFlags LookupMask = (BindingFlags)0x000000FF;
if ((bindingAttr & LookupMask) == 0)
bindingAttr |= BindingFlags.Instance | BindingFlags.Public | BindingFlags.CreateInstance;
if (activationAttributes != null && activationAttributes.Length > 0)
throw new NotSupportedException(SR.NotSupported_ActivAttr);
type = type.UnderlyingSystemType;
CreateInstanceCheckType(type);
if (args == null)
args = Array.Empty<object>();
int numArgs = args.Length;
// This short-circuit depends on the fact that the toolchain prohibits valuetypes with nullary constructors. Unfortunately, we can't check for the presence of nullary
// constructors without risking a MissingMetadataException, and we can't regress the prior N behavior that allowed CreateInstance on valuetypes to work regardless of metadata.
if (numArgs == 0 && type.IsValueType)
return RuntimeAugments.NewObject(type.TypeHandle);
Type[] argTypes = new Type[numArgs];
for (int i = 0; i < numArgs; i++)
{
argTypes[i] = args[i]?.GetType();
}
ConstructorInfo[] candidates = type.GetConstructors(bindingAttr);
ListBuilder<MethodBase> matches = new ListBuilder<MethodBase>(candidates.Length);
for (int i = 0; i < candidates.Length; i++)
{
if (candidates[i].QualifiesBasedOnParameterCount(bindingAttr, CallingConventions.Any, argTypes))
matches.Add(candidates[i]);
}
if (matches.Count == 0)
throw new MissingMethodException(SR.Arg_NoDefCTor);
if (binder == null)
binder = Type.DefaultBinder;
object state = null;
MethodBase invokeMethod = binder.BindToMethod(bindingAttr, matches.ToArray(), ref args, null, culture, null, out state);
if (invokeMethod.GetParametersNoCopy().Length == 0)
{
if (args.Length != 0)
{
Debug.Assert((invokeMethod.CallingConvention & CallingConventions.VarArgs) == CallingConventions.VarArgs);
throw new NotSupportedException(SR.NotSupported_CallToVarArg);
}
// Desktop compat: CoreClr invokes a "fast-path" here (call Activator.CreateInstance(type, true)) that also
// bypasses the binder.ReorderArgumentArray() call. That "fast-path" isn't a fast-path for us so we won't do that
// but we'll still null out the "state" variable to bypass the Reorder call.
//
// The only time this matters at all is if (1) a third party binder is being used and (2) it actually reordered the array
// which it shouldn't have done because (a) we didn't request it to bind arguments by name, and (b) it's kinda hard to
// reorder a zero-length args array. But who knows what a third party binder will do if we make a call to it that we didn't
// used to do, so we'll preserve the CoreClr order of calls just to be safe.
state = null;
}
object result = ((ConstructorInfo)invokeMethod).Invoke(bindingAttr, binder, args, culture);
if (state != null)
binder.ReorderArgumentArray(ref args, state);
return result;
}
public override Object InvokeMember(String name,
BindingFlags invokeAttr,
Binder binder,
Object target,
Object[] args,
ParameterModifier[] modifiers,
CultureInfo culture,
String[] namedParameters)
{
// Did we specify an access type?
//Console.WriteLine("InvokeAttr:" + (int) invokeAttr);
if ((invokeAttr & (BindingFlags) BinderAccessMask) == 0)
throw new ArgumentException(Environment.GetResourceString("Arg_NoAccessSpec"),"invokeAttr");
// Did we specify an CreateInstance and another access type?
if ((invokeAttr & BindingFlags.CreateInstance) != 0 &&
(invokeAttr & (BindingFlags) BinderNonCreateInstance) != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_CreatInstAccess"),"invokeAttr");
// If they didn't specify a lookup, then we will provide the default lookup.
if ((invokeAttr & (BindingFlags) LookupMask) == 0) {
invokeAttr |= BindingFlags.Instance | BindingFlags.Public;
if ((invokeAttr & BindingFlags.CreateInstance) == 0)
invokeAttr |= BindingFlags.Static;
}
// if the number of names is bigger than the number of args we have a problem
if (namedParameters != null && ((args == null && namedParameters.Length != 0) || (args != null && namedParameters.Length > args.Length)))
throw new ArgumentException(Environment.GetResourceString("Arg_NamedParamTooBig"),"namedParameters");
if (namedParameters != null)
for (int i=0;i<namedParameters.Length;i++)
if (namedParameters[i] == null)
throw new ArgumentException(Environment.GetResourceString("Arg_NamedParamNull"),"namedParameters");
// The number of arguments to the method. We will only match
// arguments that match directly.
int argCnt = (args != null) ? args.Length : 0;
// Without a binder we need to do use the default binder...
if (binder == null)
binder = DefaultBinder;
bool bDefaultBinder = (binder == DefaultBinder);
if ((invokeAttr & BindingFlags.CreateInstance) != 0)
return Activator.CreateInstance(this,invokeAttr,binder,args,culture);
// When calling on a managed component, we consider both PutDispProperty and
// PutRefDispProperty to be equivalent to SetProperty.
if ((invokeAttr & (BindingFlags.PutDispProperty | BindingFlags.PutRefDispProperty)) != 0)
invokeAttr |= BindingFlags.SetProperty;
// For fields, methods and properties the name must be specified.
if (name == null)
throw new ArgumentNullException("name");
MethodInfo[] props=null;
MethodInfo[] meths=null;
// We will narrow down the search to a field first...
FieldInfo selFld=null;
// if we are looking for the default member, find it...
if (name.Length == 0 || name.Equals("[DISPID=0]")) {
name = GetDefaultMemberName();
if (name == null) {
// in InvokeMember we always pretend there is a default member if none is provided and we make it ToString
name = "ToString";
}
}
// Fields
if ((invokeAttr & BindingFlags.GetField) != 0 ||
(invokeAttr & BindingFlags.SetField) != 0) {
FieldInfo[] flds=null;
// validate the set/get stuff
if (((invokeAttr & (BindingFlags) BinderGetSetField) ^ (BindingFlags) BinderGetSetField) == 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldSetGet"),"invokeAttr");
if (((invokeAttr & (BindingFlags) BinderSetInvokeField) ^ (BindingFlags)BinderSetInvokeField) == 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldSetInvoke"),"invokeAttr");
bool fieldGet = ((invokeAttr & BindingFlags.GetField) != 0);
if (fieldGet) {
if ((invokeAttr & BindingFlags.SetProperty) != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldGetPropSet"),"invokeAttr");
}
else {
if ((invokeAttr & BindingFlags.GetProperty) != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldSetPropGet"),"invokeAttr");
}
flds = GetMemberField(name,invokeAttr, false);
// We are only doing a field/set get
if (flds != null) {
if (flds.Length != 1) {
Object o;
if (fieldGet)
o = Empty.Value;
else {
if (args == null)
throw new ArgumentNullException("args");
o = args[0];
}
selFld = binder.BindToField(invokeAttr,flds,o,culture);
}
else {
selFld = flds[0];
}
}
// If we are only set/get field we leave here with errors...
if ((invokeAttr & (BindingFlags) BinderNonFieldGetSet) == 0) {
if (flds == null)
throw new MissingFieldException(FullName, name);
if (flds.Length == 1)
selFld = flds[0];
else
if (selFld == null)
throw new MissingFieldException(FullName, name);
}
// If we can continue we leave if we found a field. Fields
// now have the highest priority.
if (selFld != null) {
//Console.WriteLine(selFld.FieldType.Name);
//Console.WriteLine("argCnt:" + argCnt);
// For arrays we are going to see if they are trying to access the array
if (selFld.FieldType.IsArray || selFld.FieldType == typeof(System.Array)) {
int idxCnt;
if ((invokeAttr & BindingFlags.GetField) != 0) {
idxCnt = argCnt;
}
else {
idxCnt = argCnt - 1;
}
if (idxCnt > 0) {
// Verify that all of the index values are ints
int[] idx = new int[idxCnt];
for (int i=0;i<idxCnt;i++) {
try
{
idx[i] = ((IConvertible)args[i]).ToInt32(null);
}
catch (InvalidCastException)
{
throw new ArgumentException(Environment.GetResourceString("Arg_IndexMustBeInt"));
}
}
// Set or get the value...
Array a = (Array) selFld.GetValue(target);
// Set or get the value in the array
if ((invokeAttr & BindingFlags.GetField) != 0) {
return a.GetValue(idx);
}
else {
a.SetValue(args[idxCnt],idx);
return null;
}
}
}
else {
// This is not an array so we validate that the arg count is correct.
if ((invokeAttr & BindingFlags.GetField) != 0 && argCnt != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldGetArgErr"),"invokeAttr");
if ((invokeAttr & BindingFlags.SetField) != 0 && argCnt != 1)
throw new ArgumentException(Environment.GetResourceString("Arg_FldSetArgErr"),"invokeAttr");
}
// Set the field...
if (fieldGet)
return selFld.GetValue(target);
else {
selFld.SetValue(target,args[0],invokeAttr,binder,culture);
return null;
}
}
}
// Properties
MethodBase invokeMethod;
bool useCache = false;
// Note that when we add something to the cache, we are careful to ensure
// that the actual args matches the parameters of the method. Otherwise,
// some default argument processing has occurred. We don't want anyone
// else with the same (insufficient) number of actual arguments to get a
// cache hit because then they would bypass the default argument processing
// and the invocation would fail.
if (bDefaultBinder && namedParameters == null && argCnt < 6)
useCache = true;
if (useCache)
{
invokeMethod = nGetMethodFromCache (name, invokeAttr, argCnt, args);
if (invokeMethod != null)
return ((MethodInfo) invokeMethod).Invoke(target,invokeAttr,binder,args,culture);
}
if ((invokeAttr & BindingFlags.GetProperty) != 0 ||
(invokeAttr & BindingFlags.SetProperty) != 0) {
if (((invokeAttr & (BindingFlags) BinderGetSetProperty) ^ (BindingFlags) BinderGetSetProperty) == 0)
throw new ArgumentException(Environment.GetResourceString("Arg_PropSetGet"),"invokeAttr");
if (((invokeAttr & (BindingFlags) BinderSetInvokeProperty) ^ (BindingFlags) BinderSetInvokeProperty) == 0)
throw new ArgumentException(Environment.GetResourceString("Arg_PropSetInvoke"),"invokeAttr");
bool propGet = ((invokeAttr & BindingFlags.GetProperty) != 0);
if (propGet) {
if ((invokeAttr & BindingFlags.SetField) != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldSetPropGet"),"invokeAttr");
}
else {
if ((invokeAttr & BindingFlags.GetField) != 0)
throw new ArgumentException(Environment.GetResourceString("Arg_FldGetPropSet"),"invokeAttr");
}
props = GetMemberProperties(name,invokeAttr,argCnt, false);
}
if ((invokeAttr & BindingFlags.InvokeMethod) != 0) {
meths = GetMemberMethod(name, invokeAttr, CallingConventions.Any, null, argCnt, false);
}
if (meths == null && props == null)
throw new MissingMethodException(FullName, name);
// if either props or meths is null then we simply work with
// the other one. (One must be non-null because of the if statement above)
if (props == null) {
if (argCnt == 0 && meths[0].GetParameters().Length == 0 && (invokeAttr & BindingFlags.OptionalParamBinding) == 0)
{
if (useCache && argCnt == meths[0].GetParameters().Length)
nAddMethodToCache(name,invokeAttr,argCnt,args,meths[0]);
return meths[0].Invoke(target,invokeAttr,binder,args,culture);
}
else {
if (args == null)
args = new Object[0];
Object state = null;
invokeMethod = binder.BindToMethod(invokeAttr,meths,ref args,modifiers,culture,namedParameters, out state);
if (invokeMethod == null)
throw new MissingMethodException(FullName, name);
if (useCache && argCnt == invokeMethod.GetParameters().Length)
nAddMethodToCache(name,invokeAttr,argCnt,args,invokeMethod);
Object result = ((MethodInfo) invokeMethod).Invoke(target,invokeAttr,binder,args,culture);
if (state != null)
binder.ReorderArgumentArray(ref args, state);
return result;
}
}
if (meths == null) {
if (argCnt == 0 && props[0].GetParameters().Length == 0 && (invokeAttr & BindingFlags.OptionalParamBinding) == 0)
{
if (useCache && argCnt == props[0].GetParameters().Length)
nAddMethodToCache(name,invokeAttr,argCnt,args,props[0]);
return props[0].Invoke(target,invokeAttr,binder,args,culture);
}
else {
if (args == null)
args = new Object[0];
Object state = null;
invokeMethod = binder.BindToMethod(invokeAttr,props,ref args,modifiers,culture,namedParameters, out state);
if (invokeMethod == null)
throw new MissingMethodException(FullName, name);
if (useCache && argCnt == invokeMethod.GetParameters().Length)
nAddMethodToCache(name,invokeAttr,argCnt,args,invokeMethod);
Object result = ((MethodInfo) invokeMethod).Invoke(target,invokeAttr,binder,args,culture);
if (state != null)
binder.ReorderArgumentArray(ref args, state);
return result;
}
}
// Now we have both methods and properties...
MethodInfo[] p = new MethodInfo[props.Length + meths.Length];
Array.Copy(meths,p,meths.Length);
Array.Copy(props,0,p,meths.Length,props.Length);
if (args == null)
args = new Object[0];
Object binderState = null;
invokeMethod = binder.BindToMethod(invokeAttr,p,ref args,modifiers,culture,namedParameters, out binderState);
if (invokeMethod == null)
throw new MissingMethodException(FullName, name);
if (useCache && argCnt == invokeMethod.GetParameters().Length)
nAddMethodToCache(name,invokeAttr,argCnt,args,invokeMethod);
Object res = ((MethodInfo) invokeMethod).Invoke(target,invokeAttr,binder,args,culture);
if (binderState != null) {
binder.ReorderArgumentArray(ref args, binderState);
}
return res;
}
