diff options
Diffstat (limited to 'src/mscorlib/src/System/Reflection/ParameterInfo.cs')
| -rw-r--r-- | src/mscorlib/src/System/Reflection/ParameterInfo.cs | 733 |
1 files changed, 0 insertions, 733 deletions
diff --git a/src/mscorlib/src/System/Reflection/ParameterInfo.cs b/src/mscorlib/src/System/Reflection/ParameterInfo.cs deleted file mode 100644 index fad4402aff..0000000000 --- a/src/mscorlib/src/System/Reflection/ParameterInfo.cs +++ /dev/null @@ -1,733 +0,0 @@ -// 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. - -// - -namespace System.Reflection -{ - using System; - using System.Collections.Generic; - using System.Diagnostics; - using System.Diagnostics.Contracts; - using System.Runtime.InteropServices; - using System.Runtime.Serialization; - using System.Runtime.CompilerServices; - using System.Threading; - using MdToken = System.Reflection.MetadataToken; - - [Serializable] - public class ParameterInfo : ICustomAttributeProvider, IObjectReference - { - #region Legacy Protected Members - protected String NameImpl; - protected Type ClassImpl; - protected int PositionImpl; - protected ParameterAttributes AttrsImpl; - protected Object DefaultValueImpl; // cannot cache this as it may be non agile user defined enum - protected MemberInfo MemberImpl; - #endregion - - #region Legacy Private Members - // These are here only for backwards compatibility -- they are not set - // until this instance is serialized, so don't rely on their values from - // arbitrary code. -#pragma warning disable 169 - [OptionalField] - private IntPtr _importer; - [OptionalField] - private int _token; - [OptionalField] - private bool bExtraConstChecked; -#pragma warning restore 169 - #endregion - - #region Constructor - protected ParameterInfo() - { - } - #endregion - - #region Internal Members - // this is an internal api for DynamicMethod. A better solution is to change the relationship - // between ParameterInfo and ParameterBuilder so that a ParameterBuilder can be seen as a writer - // api over a ParameterInfo. However that is a possible breaking change so it needs to go through some process first - internal void SetName(String name) - { - NameImpl = name; - } - - internal void SetAttributes(ParameterAttributes attributes) - { - AttrsImpl = attributes; - } - #endregion - - #region Public Methods - public virtual Type ParameterType - { - get - { - return ClassImpl; - } - } - - public virtual String Name - { - get - { - return NameImpl; - } - } - - public virtual bool HasDefaultValue { get { throw new NotImplementedException(); } } - - public virtual Object DefaultValue { get { throw new NotImplementedException(); } } - public virtual Object RawDefaultValue { get { throw new NotImplementedException(); } } - - public virtual int Position { get { return PositionImpl; } } - public virtual ParameterAttributes Attributes { get { return AttrsImpl; } } - - public virtual MemberInfo Member { - get { - Contract.Ensures(Contract.Result<MemberInfo>() != null); - return MemberImpl; - } - } - - public bool IsIn { get { return((Attributes & ParameterAttributes.In) != 0); } } - public bool IsOut { get { return((Attributes & ParameterAttributes.Out) != 0); } } - public bool IsLcid { get { return((Attributes & ParameterAttributes.Lcid) != 0); } } - public bool IsRetval { get { return((Attributes & ParameterAttributes.Retval) != 0); } } - public bool IsOptional { get { return((Attributes & ParameterAttributes.Optional) != 0); } } - - public virtual int MetadataToken - { - get - { - // This API was made virtual in V4. Code compiled against V2 might use - // "call" rather than "callvirt" to call it. - // This makes sure those code still works. - RuntimeParameterInfo rtParam = this as RuntimeParameterInfo; - if (rtParam != null) - return rtParam.MetadataToken; - - // return a null token - return (int)MetadataTokenType.ParamDef; - } - } - - public virtual Type[] GetRequiredCustomModifiers() - { - return EmptyArray<Type>.Value; - } - - public virtual Type[] GetOptionalCustomModifiers() - { - return EmptyArray<Type>.Value; - } - #endregion - - #region Object Overrides - public override String ToString() - { - return ParameterType.FormatTypeName() + " " + Name; - } - #endregion - - public virtual IEnumerable<CustomAttributeData> CustomAttributes - { - get - { - return GetCustomAttributesData(); - } - } - #region ICustomAttributeProvider - public virtual Object[] GetCustomAttributes(bool inherit) - { - return EmptyArray<Object>.Value; - } - - public virtual Object[] GetCustomAttributes(Type attributeType, bool inherit) - { - if (attributeType == null) - throw new ArgumentNullException(nameof(attributeType)); - Contract.EndContractBlock(); - - return EmptyArray<Object>.Value; - } - - public virtual bool IsDefined(Type attributeType, bool inherit) - { - if (attributeType == null) - throw new ArgumentNullException(nameof(attributeType)); - Contract.EndContractBlock(); - - return false; - } - - public virtual IList<CustomAttributeData> GetCustomAttributesData() - { - throw new NotImplementedException(); - } - #endregion - - #region _ParameterInfo implementation - - #endregion - - #region IObjectReference - // In V4 RuntimeParameterInfo is introduced. - // To support deserializing ParameterInfo instances serialized in earlier versions - // we need to implement IObjectReference. - public object GetRealObject(StreamingContext context) - { - Contract.Ensures(Contract.Result<Object>() != null); - - // Once all the serializable fields have come in we can set up the real - // instance based on just two of them (MemberImpl and PositionImpl). - - if (MemberImpl == null) - throw new SerializationException(Environment.GetResourceString(ResId.Serialization_InsufficientState)); - - ParameterInfo[] args = null; - - switch (MemberImpl.MemberType) - { - case MemberTypes.Constructor: - case MemberTypes.Method: - if (PositionImpl == -1) - { - if (MemberImpl.MemberType == MemberTypes.Method) - return ((MethodInfo)MemberImpl).ReturnParameter; - else - throw new SerializationException(Environment.GetResourceString(ResId.Serialization_BadParameterInfo)); - } - else - { - args = ((MethodBase)MemberImpl).GetParametersNoCopy(); - - if (args != null && PositionImpl < args.Length) - return args[PositionImpl]; - else - throw new SerializationException(Environment.GetResourceString(ResId.Serialization_BadParameterInfo)); - } - - case MemberTypes.Property: - args = ((RuntimePropertyInfo)MemberImpl).GetIndexParametersNoCopy(); - - if (args != null && PositionImpl > -1 && PositionImpl < args.Length) - return args[PositionImpl]; - else - throw new SerializationException(Environment.GetResourceString(ResId.Serialization_BadParameterInfo)); - - default: - throw new SerializationException(Environment.GetResourceString(ResId.Serialization_NoParameterInfo)); - } - } - #endregion - } - - [Serializable] - internal unsafe sealed class RuntimeParameterInfo : ParameterInfo, ISerializable - { - #region Static Members - internal unsafe static ParameterInfo[] GetParameters(IRuntimeMethodInfo method, MemberInfo member, Signature sig) - { - Debug.Assert(method is RuntimeMethodInfo || method is RuntimeConstructorInfo); - - ParameterInfo dummy; - return GetParameters(method, member, sig, out dummy, false); - } - - internal unsafe static ParameterInfo GetReturnParameter(IRuntimeMethodInfo method, MemberInfo member, Signature sig) - { - Debug.Assert(method is RuntimeMethodInfo || method is RuntimeConstructorInfo); - - ParameterInfo returnParameter; - GetParameters(method, member, sig, out returnParameter, true); - return returnParameter; - } - - internal unsafe static ParameterInfo[] GetParameters( - IRuntimeMethodInfo methodHandle, MemberInfo member, Signature sig, out ParameterInfo returnParameter, bool fetchReturnParameter) - { - returnParameter = null; - int sigArgCount = sig.Arguments.Length; - ParameterInfo[] args = fetchReturnParameter ? null : new ParameterInfo[sigArgCount]; - - int tkMethodDef = RuntimeMethodHandle.GetMethodDef(methodHandle); - int cParamDefs = 0; - - // Not all methods have tokens. Arrays, pointers and byRef types do not have tokens as they - // are generated on the fly by the runtime. - if (!MdToken.IsNullToken(tkMethodDef)) - { - MetadataImport scope = RuntimeTypeHandle.GetMetadataImport(RuntimeMethodHandle.GetDeclaringType(methodHandle)); - - MetadataEnumResult tkParamDefs; - scope.EnumParams(tkMethodDef, out tkParamDefs); - - cParamDefs = tkParamDefs.Length; - - // Not all parameters have tokens. Parameters may have no token - // if they have no name and no attributes. - if (cParamDefs > sigArgCount + 1 /* return type */) - throw new BadImageFormatException(Environment.GetResourceString("BadImageFormat_ParameterSignatureMismatch")); - - for (int i = 0; i < cParamDefs; i++) - { - #region Populate ParameterInfos - ParameterAttributes attr; - int position, tkParamDef = tkParamDefs[i]; - - scope.GetParamDefProps(tkParamDef, out position, out attr); - - position--; - - if (fetchReturnParameter == true && position == -1) - { - // more than one return parameter? - if (returnParameter != null) - throw new BadImageFormatException(Environment.GetResourceString("BadImageFormat_ParameterSignatureMismatch")); - - returnParameter = new RuntimeParameterInfo(sig, scope, tkParamDef, position, attr, member); - } - else if (fetchReturnParameter == false && position >= 0) - { - // position beyong sigArgCount? - if (position >= sigArgCount) - throw new BadImageFormatException(Environment.GetResourceString("BadImageFormat_ParameterSignatureMismatch")); - - args[position] = new RuntimeParameterInfo(sig, scope, tkParamDef, position, attr, member); - } - #endregion - } - } - - // Fill in empty ParameterInfos for those without tokens - if (fetchReturnParameter) - { - if (returnParameter == null) - { - returnParameter = new RuntimeParameterInfo(sig, MetadataImport.EmptyImport, 0, -1, (ParameterAttributes)0, member); - } - } - else - { - if (cParamDefs < args.Length + 1) - { - for (int i = 0; i < args.Length; i++) - { - if (args[i] != null) - continue; - - args[i] = new RuntimeParameterInfo(sig, MetadataImport.EmptyImport, 0, i, (ParameterAttributes)0, member); - } - } - } - - return args; - } - #endregion - - #region Private Statics - private static readonly Type s_DecimalConstantAttributeType = typeof(DecimalConstantAttribute); - private static readonly Type s_CustomConstantAttributeType = typeof(CustomConstantAttribute); - #endregion - - #region Private Data Members - // These are new in Whidbey, so we cannot serialize them directly or we break backwards compatibility. - [NonSerialized] - private int m_tkParamDef; - [NonSerialized] - private MetadataImport m_scope; - [NonSerialized] - private Signature m_signature; - [NonSerialized] - private volatile bool m_nameIsCached = false; - [NonSerialized] - private readonly bool m_noMetadata = false; - [NonSerialized] - private bool m_noDefaultValue = false; - [NonSerialized] - private MethodBase m_originalMember = null; - #endregion - - #region Internal Properties - internal MethodBase DefiningMethod - { - get - { - MethodBase result = m_originalMember != null ? m_originalMember : MemberImpl as MethodBase; - Debug.Assert(result != null); - return result; - } - } - #endregion - - #region VTS magic to serialize/deserialized to/from pre-Whidbey endpoints. - public void GetObjectData(SerializationInfo info, StreamingContext context) - { - if (info == null) - throw new ArgumentNullException(nameof(info)); - Contract.EndContractBlock(); - - // We could be serializing for consumption by a pre-Whidbey - // endpoint. Therefore we set up all the serialized fields to look - // just like a v1.0/v1.1 instance. - - // Need to set the type to ParameterInfo so that pre-Whidbey and Whidbey code - // can deserialize this. This is also why we cannot simply use [OnSerializing]. - info.SetType(typeof(ParameterInfo)); - - // Use the properties intead of the fields in case the fields haven't been et - // _importer, bExtraConstChecked, and m_cachedData don't need to be set - - // Now set the legacy fields that the current implementation doesn't - // use any more. Note that _importer is a raw pointer that should - // never have been serialized in V1. We set it to zero here; if the - // deserializer uses it (by calling GetCustomAttributes() on this - // instance) they'll AV, but at least it will be a well defined - // exception and not a random AV. - - info.AddValue("AttrsImpl", Attributes); - info.AddValue("ClassImpl", ParameterType); - info.AddValue("DefaultValueImpl", DefaultValue); - info.AddValue("MemberImpl", Member); - info.AddValue("NameImpl", Name); - info.AddValue("PositionImpl", Position); - info.AddValue("_token", m_tkParamDef); - } - #endregion - - #region Constructor - // used by RuntimePropertyInfo - internal RuntimeParameterInfo(RuntimeParameterInfo accessor, RuntimePropertyInfo property) - : this(accessor, (MemberInfo)property) - { - m_signature = property.Signature; - } - - private RuntimeParameterInfo(RuntimeParameterInfo accessor, MemberInfo member) - { - // Change ownership - MemberImpl = member; - - // The original owner should always be a method, because this method is only used to - // change the owner from a method to a property. - m_originalMember = accessor.MemberImpl as MethodBase; - Debug.Assert(m_originalMember != null); - - // Populate all the caches -- we inherit this behavior from RTM - NameImpl = accessor.Name; - m_nameIsCached = true; - ClassImpl = accessor.ParameterType; - PositionImpl = accessor.Position; - AttrsImpl = accessor.Attributes; - - // Strictly speeking, property's don't contain paramter tokens - // However we need this to make ca's work... oh well... - m_tkParamDef = MdToken.IsNullToken(accessor.MetadataToken) ? (int)MetadataTokenType.ParamDef : accessor.MetadataToken; - m_scope = accessor.m_scope; - } - - private RuntimeParameterInfo( - Signature signature, MetadataImport scope, int tkParamDef, - int position, ParameterAttributes attributes, MemberInfo member) - { - Contract.Requires(member != null); - Debug.Assert(MdToken.IsNullToken(tkParamDef) == scope.Equals(MetadataImport.EmptyImport)); - Debug.Assert(MdToken.IsNullToken(tkParamDef) || MdToken.IsTokenOfType(tkParamDef, MetadataTokenType.ParamDef)); - - PositionImpl = position; - MemberImpl = member; - m_signature = signature; - m_tkParamDef = MdToken.IsNullToken(tkParamDef) ? (int)MetadataTokenType.ParamDef : tkParamDef; - m_scope = scope; - AttrsImpl = attributes; - - ClassImpl = null; - NameImpl = null; - } - - // ctor for no metadata MethodInfo in the DynamicMethod and RuntimeMethodInfo cases - internal RuntimeParameterInfo(MethodInfo owner, String name, Type parameterType, int position) - { - MemberImpl = owner; - NameImpl = name; - m_nameIsCached = true; - m_noMetadata = true; - ClassImpl = parameterType; - PositionImpl = position; - AttrsImpl = ParameterAttributes.None; - m_tkParamDef = (int)MetadataTokenType.ParamDef; - m_scope = MetadataImport.EmptyImport; - } - #endregion - - #region Public Methods - public override Type ParameterType - { - get - { - // only instance of ParameterInfo has ClassImpl, all its subclasses don't - if (ClassImpl == null) - { - RuntimeType parameterType; - if (PositionImpl == -1) - parameterType = m_signature.ReturnType; - else - parameterType = m_signature.Arguments[PositionImpl]; - - Debug.Assert(parameterType != null); - // different thread could only write ClassImpl to the same value, so a race condition is not a problem here - ClassImpl = parameterType; - } - - return ClassImpl; - } - } - - public override String Name - { - get - { - if (!m_nameIsCached) - { - if (!MdToken.IsNullToken(m_tkParamDef)) - { - string name; - name = m_scope.GetName(m_tkParamDef).ToString(); - NameImpl = name; - } - - // other threads could only write it to true, so a race condition is OK - // this field is volatile, so the write ordering is guaranteed - m_nameIsCached = true; - } - - // name may be null - return NameImpl; - } - } - - public override bool HasDefaultValue - { - get - { - if (m_noMetadata || m_noDefaultValue) - return false; - - object defaultValue = GetDefaultValueInternal(false); - - return (defaultValue != DBNull.Value); - } - } - - public override Object DefaultValue { get { return GetDefaultValue(false); } } - public override Object RawDefaultValue { get { return GetDefaultValue(true); } } - - private Object GetDefaultValue(bool raw) - { - // OLD COMMENT (Is this even true?) - // Cannot cache because default value could be non-agile user defined enumeration. - // OLD COMMENT ends - if (m_noMetadata) - return null; - - // for dynamic method we pretend to have cached the value so we do not go to metadata - object defaultValue = GetDefaultValueInternal(raw); - - if (defaultValue == DBNull.Value) - { - #region Handle case if no default value was found - if (IsOptional) - { - // If the argument is marked as optional then the default value is Missing.Value. - defaultValue = Type.Missing; - } - #endregion - } - - return defaultValue; - } - - // returns DBNull.Value if the parameter doesn't have a default value - private Object GetDefaultValueInternal(bool raw) - { - Debug.Assert(!m_noMetadata); - - if (m_noDefaultValue) - return DBNull.Value; - - object defaultValue = null; - - // Why check the parameter type only for DateTime and only for the ctor arguments? - // No check on the parameter type is done for named args and for Decimal. - - // We should move this after MdToken.IsNullToken(m_tkParamDef) and combine it - // with the other custom attribute logic. But will that be a breaking change? - // For a DateTime parameter on which both an md constant and a ca constant are set, - // which one should win? - if (ParameterType == typeof(DateTime)) - { - if (raw) - { - CustomAttributeTypedArgument value = - CustomAttributeData.Filter( - CustomAttributeData.GetCustomAttributes(this), typeof(DateTimeConstantAttribute), 0); - - if (value.ArgumentType != null) - return new DateTime((long)value.Value); - } - else - { - object[] dt = GetCustomAttributes(typeof(DateTimeConstantAttribute), false); - if (dt != null && dt.Length != 0) - return ((DateTimeConstantAttribute)dt[0]).Value; - } - } - - #region Look for a default value in metadata - if (!MdToken.IsNullToken(m_tkParamDef)) - { - // This will return DBNull.Value if no constant value is defined on m_tkParamDef in the metadata. - defaultValue = MdConstant.GetValue(m_scope, m_tkParamDef, ParameterType.GetTypeHandleInternal(), raw); - } - #endregion - - if (defaultValue == DBNull.Value) - { - #region Look for a default value in the custom attributes - if (raw) - { - foreach (CustomAttributeData attr in CustomAttributeData.GetCustomAttributes(this)) - { - Type attrType = attr.Constructor.DeclaringType; - - if (attrType == typeof(DateTimeConstantAttribute)) - { - defaultValue = DateTimeConstantAttribute.GetRawDateTimeConstant(attr); - } - else if (attrType == typeof(DecimalConstantAttribute)) - { - defaultValue = DecimalConstantAttribute.GetRawDecimalConstant(attr); - } - else if (attrType.IsSubclassOf(s_CustomConstantAttributeType)) - { - defaultValue = CustomConstantAttribute.GetRawConstant(attr); - } - } - } - else - { - Object[] CustomAttrs = GetCustomAttributes(s_CustomConstantAttributeType, false); - if (CustomAttrs.Length != 0) - { - defaultValue = ((CustomConstantAttribute)CustomAttrs[0]).Value; - } - else - { - CustomAttrs = GetCustomAttributes(s_DecimalConstantAttributeType, false); - if (CustomAttrs.Length != 0) - { - defaultValue = ((DecimalConstantAttribute)CustomAttrs[0]).Value; - } - } - } - #endregion - } - - if (defaultValue == DBNull.Value) - m_noDefaultValue = true; - - return defaultValue; - } - - internal RuntimeModule GetRuntimeModule() - { - RuntimeMethodInfo method = Member as RuntimeMethodInfo; - RuntimeConstructorInfo constructor = Member as RuntimeConstructorInfo; - RuntimePropertyInfo property = Member as RuntimePropertyInfo; - - if (method != null) - return method.GetRuntimeModule(); - else if (constructor != null) - return constructor.GetRuntimeModule(); - else if (property != null) - return property.GetRuntimeModule(); - else - return null; - } - - public override int MetadataToken - { - get - { - return m_tkParamDef; - } - } - - public override Type[] GetRequiredCustomModifiers() - { - return m_signature.GetCustomModifiers(PositionImpl + 1, true); - } - - public override Type[] GetOptionalCustomModifiers() - { - return m_signature.GetCustomModifiers(PositionImpl + 1, false); - } - - #endregion - - #region ICustomAttributeProvider - public override Object[] GetCustomAttributes(bool inherit) - { - if (MdToken.IsNullToken(m_tkParamDef)) - return EmptyArray<Object>.Value; - - return CustomAttribute.GetCustomAttributes(this, typeof(object) as RuntimeType); - } - - public override Object[] GetCustomAttributes(Type attributeType, bool inherit) - { - if (attributeType == null) - throw new ArgumentNullException(nameof(attributeType)); - Contract.EndContractBlock(); - - if (MdToken.IsNullToken(m_tkParamDef)) - return EmptyArray<Object>.Value; - - RuntimeType attributeRuntimeType = attributeType.UnderlyingSystemType as RuntimeType; - - if (attributeRuntimeType == null) - throw new ArgumentException(Environment.GetResourceString("Arg_MustBeType"), nameof(attributeType)); - - return CustomAttribute.GetCustomAttributes(this, attributeRuntimeType); - } - - public override bool IsDefined(Type attributeType, bool inherit) - { - if (attributeType == null) - throw new ArgumentNullException(nameof(attributeType)); - Contract.EndContractBlock(); - - if (MdToken.IsNullToken(m_tkParamDef)) - return false; - - RuntimeType attributeRuntimeType = attributeType.UnderlyingSystemType as RuntimeType; - - if (attributeRuntimeType == null) - throw new ArgumentException(Environment.GetResourceString("Arg_MustBeType"), nameof(attributeType)); - - return CustomAttribute.IsDefined(this, attributeRuntimeType); - } - - public override IList<CustomAttributeData> GetCustomAttributesData() - { - return CustomAttributeData.GetCustomAttributesInternal(this); - } - #endregion - } -} |