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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Diagnostics;
using System.Globalization;
using System.Text;
using System.Threading;
namespace System.Reflection
{
public abstract partial class MethodBase : MemberInfo
{
#region Static Members
public static MethodBase GetMethodFromHandle(RuntimeMethodHandle handle)
{
if (handle.IsNullHandle())
throw new ArgumentException(SR.Argument_InvalidHandle);
MethodBase m = RuntimeType.GetMethodBase(handle.GetMethodInfo());
Type declaringType = m.DeclaringType;
if (declaringType != null && declaringType.IsGenericType)
throw new ArgumentException(String.Format(
CultureInfo.CurrentCulture, SR.Argument_MethodDeclaringTypeGeneric,
m, declaringType.GetGenericTypeDefinition()));
return m;
}
public static MethodBase GetMethodFromHandle(RuntimeMethodHandle handle, RuntimeTypeHandle declaringType)
{
if (handle.IsNullHandle())
throw new ArgumentException(SR.Argument_InvalidHandle);
return RuntimeType.GetMethodBase(declaringType.GetRuntimeType(), handle.GetMethodInfo());
}
[System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
public static MethodBase GetCurrentMethod()
{
StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
return RuntimeMethodInfo.InternalGetCurrentMethod(ref stackMark);
}
#endregion
#region Internal Members
// used by EE
private IntPtr GetMethodDesc() { return MethodHandle.Value; }
internal virtual ParameterInfo[] GetParametersNoCopy() { return GetParameters(); }
#endregion
#region Internal Methods
// helper method to construct the string representation of the parameter list
internal static string ConstructParameters(Type[] parameterTypes, CallingConventions callingConvention, bool serialization)
{
StringBuilder sbParamList = new StringBuilder();
string comma = "";
for (int i = 0; i < parameterTypes.Length; i++)
{
Type t = parameterTypes[i];
sbParamList.Append(comma);
string typeName = t.FormatTypeName(serialization);
// Legacy: Why use "ByRef" for by ref parameters? What language is this?
// VB uses "ByRef" but it should precede (not follow) the parameter name.
// Why don't we just use "&"?
if (t.IsByRef && !serialization)
{
sbParamList.Append(typeName.TrimEnd('&'));
sbParamList.Append(" ByRef");
}
else
{
sbParamList.Append(typeName);
}
comma = ", ";
}
if ((callingConvention & CallingConventions.VarArgs) == CallingConventions.VarArgs)
{
sbParamList.Append(comma);
sbParamList.Append("...");
}
return sbParamList.ToString();
}
internal string FullName
{
get
{
return String.Format("{0}.{1}", DeclaringType.FullName, FormatNameAndSig());
}
}
internal string FormatNameAndSig()
{
return FormatNameAndSig(false);
}
internal virtual string FormatNameAndSig(bool serialization)
{
// Serialization uses ToString to resolve MethodInfo overloads.
StringBuilder sbName = new StringBuilder(Name);
sbName.Append("(");
sbName.Append(ConstructParameters(GetParameterTypes(), CallingConvention, serialization));
sbName.Append(")");
return sbName.ToString();
}
internal virtual Type[] GetParameterTypes()
{
ParameterInfo[] paramInfo = GetParametersNoCopy();
Type[] parameterTypes = new Type[paramInfo.Length];
for (int i = 0; i < paramInfo.Length; i++)
parameterTypes[i] = paramInfo[i].ParameterType;
return parameterTypes;
}
internal Object[] CheckArguments(Object[] parameters, Binder binder,
BindingFlags invokeAttr, CultureInfo culture, Signature sig)
{
// copy the arguments in a different array so we detach from any user changes
Object[] copyOfParameters = new Object[parameters.Length];
ParameterInfo[] p = null;
for (int i = 0; i < parameters.Length; i++)
{
Object arg = parameters[i];
RuntimeType argRT = sig.Arguments[i];
if (arg == Type.Missing)
{
if (p == null)
p = GetParametersNoCopy();
if (p[i].DefaultValue == System.DBNull.Value)
throw new ArgumentException(SR.Arg_VarMissNull, nameof(parameters));
arg = p[i].DefaultValue;
}
copyOfParameters[i] = argRT.CheckValue(arg, binder, culture, invokeAttr);
}
return copyOfParameters;
}
#endregion
}
}
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