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//
// MonoMethod.cs: The class used to represent methods from the mono runtime.
//
// Authors:
// Paolo Molaro (lupus@ximian.com)
// Marek Safar (marek.safar@gmail.com)
//
// (C) 2001 Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
// Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections.Generic;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;
#if !FULL_AOT_RUNTIME
using System.Reflection.Emit;
#endif
using System.Security;
using System.Threading;
using System.Text;
using System.Diagnostics;
namespace System.Reflection {
internal struct MonoMethodInfo
{
#pragma warning disable 649
private Type parent;
private Type ret;
internal MethodAttributes attrs;
internal MethodImplAttributes iattrs;
private CallingConventions callconv;
#pragma warning restore 649
[MethodImplAttribute(MethodImplOptions.InternalCall)]
static extern void get_method_info (IntPtr handle, out MonoMethodInfo info);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
static extern int get_method_attributes (IntPtr handle);
internal static MonoMethodInfo GetMethodInfo (IntPtr handle)
{
MonoMethodInfo info;
MonoMethodInfo.get_method_info (handle, out info);
return info;
}
internal static Type GetDeclaringType (IntPtr handle)
{
return GetMethodInfo (handle).parent;
}
internal static Type GetReturnType (IntPtr handle)
{
return GetMethodInfo (handle).ret;
}
internal static MethodAttributes GetAttributes (IntPtr handle)
{
return (MethodAttributes)get_method_attributes (handle);
}
internal static CallingConventions GetCallingConvention (IntPtr handle)
{
return GetMethodInfo (handle).callconv;
}
internal static MethodImplAttributes GetMethodImplementationFlags (IntPtr handle)
{
return GetMethodInfo (handle).iattrs;
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
static extern ParameterInfo[] get_parameter_info (IntPtr handle, MemberInfo member);
static internal ParameterInfo[] GetParametersInfo (IntPtr handle, MemberInfo member)
{
return get_parameter_info (handle, member);
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
static extern MarshalAsAttribute get_retval_marshal (IntPtr handle);
static internal ParameterInfo GetReturnParameterInfo (MonoMethod method)
{
return new ParameterInfo (GetReturnType (method.mhandle), method, get_retval_marshal (method.mhandle));
}
};
/*
* Note: most of this class needs to be duplicated for the contructor, since
* the .NET reflection class hierarchy is so broken.
*/
[Serializable()]
[StructLayout (LayoutKind.Sequential)]
internal class MonoMethod : MethodInfo, ISerializable
{
#pragma warning disable 649
internal IntPtr mhandle;
string name;
Type reftype;
#pragma warning restore 649
internal MonoMethod () {
}
internal MonoMethod (RuntimeMethodHandle mhandle) {
this.mhandle = mhandle.Value;
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern string get_name (MethodBase method);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern MonoMethod get_base_method (MonoMethod method, bool definition);
public override MethodInfo GetBaseDefinition ()
{
return get_base_method (this, true);
}
internal override MethodInfo GetBaseMethod ()
{
return get_base_method (this, false);
}
public override ParameterInfo ReturnParameter {
get {
return MonoMethodInfo.GetReturnParameterInfo (this);
}
}
public override Type ReturnType {
get {
return MonoMethodInfo.GetReturnType (mhandle);
}
}
public override ICustomAttributeProvider ReturnTypeCustomAttributes {
get {
return MonoMethodInfo.GetReturnParameterInfo (this);
}
}
public override MethodImplAttributes GetMethodImplementationFlags ()
{
return MonoMethodInfo.GetMethodImplementationFlags (mhandle);
}
public override ParameterInfo[] GetParameters ()
{
var src = MonoMethodInfo.GetParametersInfo (mhandle, this);
if (src.Length == 0)
return src;
// Have to clone because GetParametersInfo icall returns cached value
var dest = new ParameterInfo [src.Length];
Array.FastCopy (src, 0, dest, 0, src.Length);
return dest;
}
internal override ParameterInfo[] GetParametersInternal ()
{
return MonoMethodInfo.GetParametersInfo (mhandle, this);
}
internal override int GetParametersCount ()
{
return MonoMethodInfo.GetParametersInfo (mhandle, this).Length;
}
/*
* InternalInvoke() receives the parameters correctly converted by the
* binder to match the types of the method signature.
*/
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal extern Object InternalInvoke (Object obj, Object[] parameters, out Exception exc);
[DebuggerHidden]
[DebuggerStepThrough]
public override Object Invoke (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
{
if (binder == null)
binder = Binder.DefaultBinder;
/*Avoid allocating an array every time*/
ParameterInfo[] pinfo = GetParametersInternal ();
binder.ConvertValues (parameters, pinfo, culture, (invokeAttr & BindingFlags.ExactBinding) != 0);
#if !NET_2_1
if (SecurityManager.SecurityEnabled) {
// sadly Attributes doesn't tell us which kind of security action this is so
// we must do it the hard way - and it also means that we can skip calling
// Attribute (which is another an icall)
SecurityManager.ReflectedLinkDemandInvoke (this);
}
#endif
if (ContainsGenericParameters)
throw new InvalidOperationException ("Late bound operations cannot be performed on types or methods for which ContainsGenericParameters is true.");
Exception exc;
object o = null;
try {
// The ex argument is used to distinguish exceptions thrown by the icall
// from the exceptions thrown by the called method (which need to be
// wrapped in TargetInvocationException).
o = InternalInvoke (obj, parameters, out exc);
} catch (ThreadAbortException) {
throw;
#if NET_2_1
} catch (MethodAccessException) {
throw;
#endif
} catch (Exception e) {
throw new TargetInvocationException (e);
}
if (exc != null)
throw exc;
return o;
}
public override RuntimeMethodHandle MethodHandle {
get {
return new RuntimeMethodHandle (mhandle);
}
}
public override MethodAttributes Attributes {
get {
return MonoMethodInfo.GetAttributes (mhandle);
}
}
public override CallingConventions CallingConvention {
get {
return MonoMethodInfo.GetCallingConvention (mhandle);
}
}
public override Type ReflectedType {
get {
return reftype;
}
}
public override Type DeclaringType {
get {
return MonoMethodInfo.GetDeclaringType (mhandle);
}
}
public override string Name {
get {
if (name != null)
return name;
return get_name (this);
}
}
public override bool IsDefined (Type attributeType, bool inherit) {
return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
}
public override object[] GetCustomAttributes( bool inherit) {
return MonoCustomAttrs.GetCustomAttributes (this, inherit);
}
public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal static extern DllImportAttribute GetDllImportAttribute (IntPtr mhandle);
internal object[] GetPseudoCustomAttributes ()
{
int count = 0;
/* MS.NET doesn't report MethodImplAttribute */
MonoMethodInfo info = MonoMethodInfo.GetMethodInfo (mhandle);
if ((info.iattrs & MethodImplAttributes.PreserveSig) != 0)
count ++;
if ((info.attrs & MethodAttributes.PinvokeImpl) != 0)
count ++;
if (count == 0)
return null;
object[] attrs = new object [count];
count = 0;
if ((info.iattrs & MethodImplAttributes.PreserveSig) != 0)
attrs [count ++] = new PreserveSigAttribute ();
if ((info.attrs & MethodAttributes.PinvokeImpl) != 0) {
DllImportAttribute attr = GetDllImportAttribute (mhandle);
if ((info.iattrs & MethodImplAttributes.PreserveSig) != 0)
attr.PreserveSig = true;
attrs [count ++] = attr;
}
return attrs;
}
static bool ShouldPrintFullName (Type type) {
return type.IsClass && (!type.IsPointer ||
(!type.GetElementType ().IsPrimitive && !type.GetElementType ().IsNested));
}
public override string ToString () {
StringBuilder sb = new StringBuilder ();
Type retType = ReturnType;
if (ShouldPrintFullName (retType))
sb.Append (retType.ToString ());
else
sb.Append (retType.Name);
sb.Append (" ");
sb.Append (Name);
if (IsGenericMethod) {
Type[] gen_params = GetGenericArguments ();
sb.Append ("[");
for (int j = 0; j < gen_params.Length; j++) {
if (j > 0)
sb.Append (",");
sb.Append (gen_params [j].Name);
}
sb.Append ("]");
}
sb.Append ("(");
ParameterInfo[] p = GetParametersInternal ();
for (int i = 0; i < p.Length; ++i) {
if (i > 0)
sb.Append (", ");
Type pt = p[i].ParameterType;
bool byref = pt.IsByRef;
if (byref)
pt = pt.GetElementType ();
if (ShouldPrintFullName (pt))
sb.Append (pt.ToString ());
else
sb.Append (pt.Name);
if (byref)
sb.Append (" ByRef");
}
if ((CallingConvention & CallingConventions.VarArgs) != 0) {
if (p.Length > 0)
sb.Append (", ");
sb.Append ("...");
}
sb.Append (")");
return sb.ToString ();
}
// ISerializable
public void GetObjectData(SerializationInfo info, StreamingContext context)
{
Type[] genericArguments = IsGenericMethod && !IsGenericMethodDefinition
? GetGenericArguments () : null;
MemberInfoSerializationHolder.Serialize ( info, Name, ReflectedType, ToString(), MemberTypes.Method, genericArguments);
}
public override MethodInfo MakeGenericMethod (Type [] methodInstantiation)
{
if (methodInstantiation == null)
throw new ArgumentNullException ("methodInstantiation");
if (!IsGenericMethodDefinition)
throw new InvalidOperationException ("not a generic method definition");
/*FIXME add GetGenericArgumentsLength() internal vcall to speed this up*/
if (GetGenericArguments ().Length != methodInstantiation.Length)
throw new ArgumentException ("Incorrect length");
bool hasUserType = false;
foreach (Type type in methodInstantiation) {
if (type == null)
throw new ArgumentNullException ();
if (!(type is MonoType))
hasUserType = true;
}
if (hasUserType)
#if FULL_AOT_RUNTIME
throw new NotSupportedException ("User types are not supported under full aot");
#else
return new MethodOnTypeBuilderInst (this, methodInstantiation);
#endif
MethodInfo ret = MakeGenericMethod_impl (methodInstantiation);
if (ret == null)
throw new ArgumentException (String.Format ("The method has {0} generic parameter(s) but {1} generic argument(s) were provided.", GetGenericArguments ().Length, methodInstantiation.Length));
return ret;
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
extern MethodInfo MakeGenericMethod_impl (Type [] types);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public override extern Type [] GetGenericArguments ();
[MethodImplAttribute(MethodImplOptions.InternalCall)]
extern MethodInfo GetGenericMethodDefinition_impl ();
public override MethodInfo GetGenericMethodDefinition ()
{
MethodInfo res = GetGenericMethodDefinition_impl ();
if (res == null)
throw new InvalidOperationException ();
return res;
}
public override extern bool IsGenericMethodDefinition {
[MethodImplAttribute(MethodImplOptions.InternalCall)]
get;
}
public override extern bool IsGenericMethod {
[MethodImplAttribute(MethodImplOptions.InternalCall)]
get;
}
public override bool ContainsGenericParameters {
get {
if (IsGenericMethod) {
foreach (Type arg in GetGenericArguments ())
if (arg.ContainsGenericParameters)
return true;
}
return DeclaringType.ContainsGenericParameters;
}
}
public override MethodBody GetMethodBody () {
return GetMethodBody (mhandle);
}
#if NET_4_0
public override IList<CustomAttributeData> GetCustomAttributesData () {
return CustomAttributeData.GetCustomAttributes (this);
}
#endif
}
[Serializable()]
[StructLayout (LayoutKind.Sequential)]
internal class MonoCMethod : ConstructorInfo, ISerializable
{
#pragma warning disable 649
internal IntPtr mhandle;
string name;
Type reftype;
#pragma warning restore 649
public override MethodImplAttributes GetMethodImplementationFlags ()
{
return MonoMethodInfo.GetMethodImplementationFlags (mhandle);
}
public override ParameterInfo[] GetParameters ()
{
return MonoMethodInfo.GetParametersInfo (mhandle, this);
}
internal override ParameterInfo[] GetParametersInternal ()
{
return MonoMethodInfo.GetParametersInfo (mhandle, this);
}
internal override int GetParametersCount ()
{
var pi = MonoMethodInfo.GetParametersInfo (mhandle, this);
return pi == null ? 0 : pi.Length;
}
/*
* InternalInvoke() receives the parameters correctly converted by the binder
* to match the types of the method signature.
*/
[MethodImplAttribute(MethodImplOptions.InternalCall)]
internal extern Object InternalInvoke (Object obj, Object[] parameters, out Exception exc);
[DebuggerHidden]
[DebuggerStepThrough]
public override object Invoke (object obj, BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)
{
if (obj == null) {
if (!IsStatic)
throw new TargetException ("Instance constructor requires a target");
} else if (!DeclaringType.IsInstanceOfType (obj)) {
throw new TargetException ("Constructor does not match target type");
}
return DoInvoke (obj, invokeAttr, binder, parameters, culture);
}
object DoInvoke (object obj, BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)
{
if (binder == null)
binder = Binder.DefaultBinder;
ParameterInfo[] pinfo = MonoMethodInfo.GetParametersInfo (mhandle, this);
binder.ConvertValues (parameters, pinfo, culture, (invokeAttr & BindingFlags.ExactBinding) != 0);
#if !NET_2_1
if (SecurityManager.SecurityEnabled) {
// sadly Attributes doesn't tell us which kind of security action this is so
// we must do it the hard way - and it also means that we can skip calling
// Attribute (which is another an icall)
SecurityManager.ReflectedLinkDemandInvoke (this);
}
#endif
if (obj == null && DeclaringType.ContainsGenericParameters)
throw new MemberAccessException ("Cannot create an instance of " + DeclaringType + " because Type.ContainsGenericParameters is true.");
if ((invokeAttr & BindingFlags.CreateInstance) != 0 && DeclaringType.IsAbstract) {
throw new MemberAccessException (String.Format ("Cannot create an instance of {0} because it is an abstract class", DeclaringType));
}
return InternalInvoke (obj, parameters);
}
public object InternalInvoke (object obj, object[] parameters)
{
Exception exc;
object o = null;
try {
o = InternalInvoke (obj, parameters, out exc);
#if NET_2_1
} catch (MethodAccessException) {
throw;
#endif
} catch (Exception e) {
throw new TargetInvocationException (e);
}
if (exc != null)
throw exc;
return obj == null ? o : null;
}
[DebuggerHidden]
[DebuggerStepThrough]
public override Object Invoke (BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
{
return DoInvoke (null, invokeAttr, binder, parameters, culture);
}
public override RuntimeMethodHandle MethodHandle {
get {
return new RuntimeMethodHandle (mhandle);
}
}
public override MethodAttributes Attributes {
get {
return MonoMethodInfo.GetAttributes (mhandle);
}
}
public override CallingConventions CallingConvention {
get {
return MonoMethodInfo.GetCallingConvention (mhandle);
}
}
public override Type ReflectedType {
get {
return reftype;
}
}
public override Type DeclaringType {
get {
return MonoMethodInfo.GetDeclaringType (mhandle);
}
}
public override string Name {
get {
if (name != null)
return name;
return MonoMethod.get_name (this);
}
}
public override bool IsDefined (Type attributeType, bool inherit) {
return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
}
public override object[] GetCustomAttributes( bool inherit) {
return MonoCustomAttrs.GetCustomAttributes (this, inherit);
}
public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
}
public override MethodBody GetMethodBody () {
return GetMethodBody (mhandle);
}
public override string ToString () {
StringBuilder sb = new StringBuilder ();
sb.Append ("Void ");
sb.Append (Name);
sb.Append ("(");
ParameterInfo[] p = GetParameters ();
for (int i = 0; i < p.Length; ++i) {
if (i > 0)
sb.Append (", ");
sb.Append (p[i].ParameterType.Name);
}
if (CallingConvention == CallingConventions.Any)
sb.Append (", ...");
sb.Append (")");
return sb.ToString ();
}
// ISerializable
public void GetObjectData(SerializationInfo info, StreamingContext context)
{
MemberInfoSerializationHolder.Serialize ( info, Name, ReflectedType, ToString(), MemberTypes.Constructor);
}
#if NET_4_0
public override IList<CustomAttributeData> GetCustomAttributesData () {
return CustomAttributeData.GetCustomAttributes (this);
}
#endif
}
}
|