- public class Method : MethodOrOperator {
-
- /// <summary>
- /// Modifiers allowed in a class declaration
- /// </summary>
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.STATIC |
- Modifiers.VIRTUAL |
- Modifiers.SEALED |
- Modifiers.OVERRIDE |
- Modifiers.ABSTRACT |
- Modifiers.UNSAFE |
- Modifiers.EXTERN;
-
- const int AllowedInterfaceModifiers =
- Modifiers.NEW | Modifiers.UNSAFE;
-
- Method partialMethodImplementation;
-
- public Method (DeclSpace parent, GenericMethod generic,
- FullNamedExpression return_type, int mod,
- MemberName name, ParametersCompiled parameters, Attributes attrs)
- : base (parent, generic, return_type, mod,
- parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
- name, attrs, parameters)
- {
- }
-
- protected Method (DeclSpace parent, FullNamedExpression return_type, int mod, int amod,
- MemberName name, ParametersCompiled parameters, Attributes attrs)
- : base (parent, null, return_type, mod, amod, name, attrs, parameters)
- {
- }
-
- public override string GetSignatureForError()
- {
- return base.GetSignatureForError () + Parameters.GetSignatureForError ();
- }
-
- static void Error_DuplicateEntryPoint (Method b)
- {
- Report.Error (17, b.Location,
- "Program `{0}' has more than one entry point defined: `{1}'",
- CodeGen.FileName, b.GetSignatureForError ());
- }
-
- bool IsEntryPoint ()
- {
- if (ReturnType != TypeManager.void_type &&
- ReturnType != TypeManager.int32_type)
- return false;
-
- if (Parameters.Count == 0)
- return true;
-
- if (Parameters.Count > 1)
- return false;
-
- Type t = Parameters.Types [0];
- return t.IsArray && t.GetArrayRank () == 1 &&
- TypeManager.GetElementType (t) == TypeManager.string_type &&
- (Parameters[0].ModFlags & ~Parameter.Modifier.PARAMS) == Parameter.Modifier.NONE;
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Type == pa.Conditional) {
- if (IsExplicitImpl) {
- Error_ConditionalAttributeIsNotValid ();
- return;
- }
-
- if (ReturnType != TypeManager.void_type) {
- Report.Error (578, Location, "Conditional not valid on `{0}' because its return type is not void", GetSignatureForError ());
- return;
- }
-
- if ((ModFlags & Modifiers.OVERRIDE) != 0) {
- Report.Error (243, Location, "Conditional not valid on `{0}' because it is an override method", GetSignatureForError ());
- return;
- }
-
- if (IsInterface) {
- Report.Error (582, Location, "Conditional not valid on interface members");
- return;
- }
-
- if (MethodData.implementing != null) {
- Report.SymbolRelatedToPreviousError (MethodData.implementing.DeclaringType);
- Report.Error (629, Location, "Conditional member `{0}' cannot implement interface member `{1}'",
- GetSignatureForError (), TypeManager.CSharpSignature (MethodData.implementing));
- return;
- }
-
- for (int i = 0; i < Parameters.Count; ++i) {
- if (Parameters.FixedParameters [i].ModFlags == Parameter.Modifier.OUT) {
- Report.Error (685, Location, "Conditional method `{0}' cannot have an out parameter", GetSignatureForError ());
- return;
- }
- }
- }
-
- if (a.Type == pa.Extension) {
- a.Error_MisusedExtensionAttribute ();
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- protected override bool CheckForDuplications ()
- {
- if (!base.CheckForDuplications ())
- return false;
-
- ArrayList ar = Parent.PartialContainer.Properties;
- if (ar != null) {
- for (int i = 0; i < ar.Count; ++i) {
- PropertyBase pb = (PropertyBase) ar [i];
- if (pb.AreAccessorsDuplicateImplementation (this))
- return false;
- }
- }
-
- ar = Parent.PartialContainer.Indexers;
- if (ar != null) {
- for (int i = 0; i < ar.Count; ++i) {
- PropertyBase pb = (PropertyBase) ar [i];
- if (pb.AreAccessorsDuplicateImplementation (this))
- return false;
- }
- }
-
- return true;
- }
-
- protected override bool CheckBase ()
- {
- if (!base.CheckBase ())
- return false;
-
- if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == Destructor.MetadataName) {
- Report.Error (249, Location, "Do not override `{0}'. Use destructor syntax instead",
- TypeManager.CSharpSignature (base_method));
- }
-
- return true;
- }
-
- //
- // Creates the type
- //
- public override bool Define ()
- {
- if (type_name == TypeManager.system_void_expr && Parameters.IsEmpty && Name == Destructor.MetadataName) {
- Report.Warning (465, 1, Location, "Introducing `Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
- }
-
- if (!base.Define ())
- return false;
-
- if (partialMethodImplementation != null && IsPartialDefinition)
- MethodBuilder = partialMethodImplementation.MethodBuilder;
-
- if (RootContext.StdLib && TypeManager.IsSpecialType (ReturnType)) {
- Error1599 (Location, ReturnType);
- return false;
- }
-
- if (base_method != null && (ModFlags & Modifiers.NEW) == 0) {
- if (Parameters.Count == 1 && ParameterTypes [0] == TypeManager.object_type && Name == "Equals")
- Parent.PartialContainer.Mark_HasEquals ();
- else if (Parameters.IsEmpty && Name == "GetHashCode")
- Parent.PartialContainer.Mark_HasGetHashCode ();
- }
-
- if ((ModFlags & Modifiers.STATIC) == 0)
- return true;
-
- if (Parameters.HasExtensionMethodType) {
- if (Parent.PartialContainer.IsStaticClass && !Parent.IsGeneric) {
- if (!Parent.IsTopLevel)
- Report.Error (1109, Location, "`{0}': Extension methods cannot be defined in a nested class",
- GetSignatureForError ());
-
- PredefinedAttribute pa = PredefinedAttributes.Get.Extension;
- if (!pa.IsDefined) {
- Report.Error (1110, Location,
- "`{0}': Extension methods cannot be declared without a reference to System.Core.dll assembly. Add the assembly reference or remove `this' modifer from the first parameter",
- GetSignatureForError ());
- }
-
- ModFlags |= Modifiers.METHOD_EXTENSION;
- Parent.PartialContainer.ModFlags |= Modifiers.METHOD_EXTENSION;
- CodeGen.Assembly.HasExtensionMethods = true;
- } else {
- Report.Error (1106, Location, "`{0}': Extension methods must be defined in a non-generic static class",
- GetSignatureForError ());
- }
- }
-
- //
- // This is used to track the Entry Point,
- //
- if (RootContext.NeedsEntryPoint &&
- Name == "Main" &&
- (RootContext.MainClass == null ||
- RootContext.MainClass == Parent.TypeBuilder.FullName)){
- if (IsEntryPoint ()) {
-
- if (RootContext.EntryPoint == null) {
- if (Parent.IsGeneric || MemberName.IsGeneric) {
- Report.Warning (402, 4, Location, "`{0}': an entry point cannot be generic or in a generic type",
- GetSignatureForError ());
- } else {
- SetMemberIsUsed ();
- RootContext.EntryPoint = this;
- }
- } else {
- Error_DuplicateEntryPoint (RootContext.EntryPoint);
- Error_DuplicateEntryPoint (this);
- }
- } else {
- Report.Warning (28, 4, Location, "`{0}' has the wrong signature to be an entry point",
- GetSignatureForError ());
- }
- }
-
- return true;
- }
-
- //
- // Emits the code
- //
- public override void Emit ()
- {
- try {
- Report.Debug (64, "METHOD EMIT", this, MethodBuilder, Location, Block, MethodData);
- if (IsPartialDefinition) {
- //
- // Use partial method implementation builder for partial method declaration attributes
- //
- if (partialMethodImplementation != null) {
- MethodBuilder = partialMethodImplementation.MethodBuilder;
- return;
- }
- } else if ((ModFlags & Modifiers.PARTIAL) != 0 && (caching_flags & Flags.PartialDefinitionExists) == 0) {
- Report.Error (759, Location, "A partial method `{0}' implementation is missing a partial method declaration",
- GetSignatureForError ());
- }
-
- base.Emit ();
-
- if ((ModFlags & Modifiers.METHOD_EXTENSION) != 0)
- PredefinedAttributes.Get.Extension.EmitAttribute (MethodBuilder);
- } catch {
- Console.WriteLine ("Internal compiler error at {0}: exception caught while emitting {1}",
- Location, MethodBuilder);
- throw;
- }
- }
-
- public override bool EnableOverloadChecks (MemberCore overload)
- {
- // TODO: It can be deleted when members will be defined in correct order
- if (overload is Operator)
- return overload.EnableOverloadChecks (this);
-
- if (overload is Indexer)
- return false;
-
- return base.EnableOverloadChecks (overload);
- }
-
- public static void Error1599 (Location loc, Type t)
- {
- Report.Error (1599, loc, "Method or delegate cannot return type `{0}'", TypeManager.CSharpName (t));
- }
-
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindMemberToOverride (
- Parent.TypeBuilder, Name, Parameters, GenericMethod, false);
-
- if (mi == null)
- return null;
-
- if (mi.IsSpecialName)
- return null;
-
- base_ret_type = TypeManager.TypeToCoreType (mi.ReturnType);
- return mi;
- }
-
- public void SetPartialDefinition (Method methodDefinition)
- {
- caching_flags |= Flags.PartialDefinitionExists;
- methodDefinition.partialMethodImplementation = this;
-
- for (int i = 0; i < methodDefinition.Parameters.Count; ++i ) {
- Parameters [i].DefaultValue = methodDefinition.Parameters [i].DefaultValue;
- }
-
- if (methodDefinition.attributes == null)
- return;
-
- if (attributes == null) {
- attributes = methodDefinition.attributes;
- } else {
- attributes.Attrs.AddRange (methodDefinition.attributes.Attrs);
- }
- }
-
- protected override bool VerifyClsCompliance ()
- {
- if (!base.VerifyClsCompliance ())
- return false;
-
- if (!Parameters.IsEmpty) {
- ArrayList al = (ArrayList)Parent.PartialContainer.MemberCache.Members [Name];
- if (al.Count > 1)
- MemberCache.VerifyClsParameterConflict (al, this, MethodBuilder);
- }
-
- return true;
- }
- }
-
- public abstract class ConstructorInitializer : ExpressionStatement
- {
- Arguments argument_list;
- MethodGroupExpr base_constructor_group;
-
- public ConstructorInitializer (Arguments argument_list, Location loc)
- {
- this.argument_list = argument_list;
- this.loc = loc;
- }
-
- public Arguments Arguments {
- get {
- return argument_list;
- }
- }
-
- public override Expression CreateExpressionTree (EmitContext ec)
- {
- throw new NotSupportedException ("ET");
- }
-
- public ExpressionStatement Resolve (ConstructorBuilder caller_builder, EmitContext ec)
- {
- if (argument_list != null) {
- bool dynamic;
- argument_list.Resolve (ec, out dynamic);
- if (dynamic) {
- SimpleName ctor = new SimpleName (ConstructorBuilder.ConstructorName, loc);
- return new DynamicInvocation (ctor, argument_list, loc).Resolve (ec) as ExpressionStatement;
- }
- }
-
- if (this is ConstructorBaseInitializer) {
- if (ec.ContainerType.BaseType == null)
- return this;
-
- type = ec.ContainerType.BaseType;
- if (TypeManager.IsStruct (ec.ContainerType)) {
- Report.Error (522, loc,
- "`{0}': Struct constructors cannot call base constructors", TypeManager.CSharpSignature (caller_builder));
- return this;
- }
- } else {
- //
- // It is legal to have "this" initializers that take no arguments
- // in structs, they are just no-ops.
- //
- // struct D { public D (int a) : this () {}
- //
- if (TypeManager.IsStruct (ec.ContainerType) && argument_list == null)
- return this;
-
- type = ec.ContainerType;
- }
-
- base_constructor_group = MemberLookupFinal (
- ec, null, type, ConstructorBuilder.ConstructorName, MemberTypes.Constructor,
- BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
- loc) as MethodGroupExpr;
-
- if (base_constructor_group == null)
- return this;
-
- base_constructor_group = base_constructor_group.OverloadResolve (
- ec, ref argument_list, false, loc);
-
- if (base_constructor_group == null)
- return this;
-
- ConstructorInfo base_ctor = (ConstructorInfo)base_constructor_group;
-
- if (base_ctor == caller_builder){
- Report.Error (516, loc, "Constructor `{0}' cannot call itself", TypeManager.CSharpSignature (caller_builder));
- }
-
- return this;
- }
-
- public override Expression DoResolve (EmitContext ec)
- {
- throw new NotSupportedException ();
- }
-
- public override void Emit (EmitContext ec)
- {
- // It can be null for static initializers
- if (base_constructor_group == null)
- return;
-
- ec.Mark (loc);
- if (!ec.IsStatic)
- base_constructor_group.InstanceExpression = ec.GetThis (loc);
-
- base_constructor_group.EmitCall (ec, argument_list);
- }
-
- public override void EmitStatement (EmitContext ec)
- {
- Emit (ec);
- }
- }
-
- public class ConstructorBaseInitializer : ConstructorInitializer {
- public ConstructorBaseInitializer (Arguments argument_list, Location l) :
- base (argument_list, l)
- {
- }
- }
-
- class GeneratedBaseInitializer: ConstructorBaseInitializer {
- public GeneratedBaseInitializer (Location loc):
- base (null, loc)
- {
- }
- }
-
- public class ConstructorThisInitializer : ConstructorInitializer {
- public ConstructorThisInitializer (Arguments argument_list, Location l) :
- base (argument_list, l)
- {
- }
- }
-
- public class Constructor : MethodCore, IMethodData {
- public ConstructorBuilder ConstructorBuilder;
- public ConstructorInitializer Initializer;
- ListDictionary declarative_security;
- bool has_compliant_args;
-
- // <summary>
- // Modifiers allowed for a constructor.
- // </summary>
- public const int AllowedModifiers =
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.STATIC |
- Modifiers.UNSAFE |
- Modifiers.EXTERN |
- Modifiers.PRIVATE;
-
- static readonly string[] attribute_targets = new string [] { "method" };
-
- //
- // The spec claims that static is not permitted, but
- // my very own code has static constructors.
- //
- public Constructor (DeclSpace parent, string name, int mod, Attributes attrs, ParametersCompiled args,
- ConstructorInitializer init, Location loc)
- : base (parent, null, null, mod, AllowedModifiers,
- new MemberName (name, loc), attrs, args)
- {
- Initializer = init;
- }
-
- public bool HasCompliantArgs {
- get { return has_compliant_args; }
- }
-
- public override AttributeTargets AttributeTargets {
- get { return AttributeTargets.Constructor; }
- }
-
- //
- // Returns true if this is a default constructor
- //
- public bool IsDefault ()
- {
- if ((ModFlags & Modifiers.STATIC) != 0)
- return Parameters.IsEmpty;
-
- return Parameters.IsEmpty &&
- (Initializer is ConstructorBaseInitializer) &&
- (Initializer.Arguments == null);
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.IsValidSecurityAttribute ()) {
- if (declarative_security == null) {
- declarative_security = new ListDictionary ();
- }
- a.ExtractSecurityPermissionSet (declarative_security);
- return;
- }
-
- if (a.IsInternalMethodImplAttribute) {
- is_external_implementation = true;
- }
-
- ConstructorBuilder.SetCustomAttribute (cb);
- }
-
- protected override bool CheckBase ()
- {
- if ((ModFlags & Modifiers.STATIC) != 0) {
- if (!Parameters.IsEmpty) {
- Report.Error (132, Location, "`{0}': The static constructor must be parameterless",
- GetSignatureForError ());
- return false;
- }
-
- // the rest can be ignored
- return true;
- }
-
- // Check whether arguments were correct.
- if (!DefineParameters (Parameters))
- return false;
-
- if ((caching_flags & Flags.MethodOverloadsExist) != 0)
- Parent.MemberCache.CheckExistingMembersOverloads (this, ConstructorInfo.ConstructorName,
- Parameters);
-
- if (Parent.PartialContainer.Kind == Kind.Struct) {
- if (Parameters.Count == 0) {
- Report.Error (568, Location,
- "Structs cannot contain explicit parameterless constructors");
- return false;
- }
- }
-
- CheckProtectedModifier ();
-
- return true;
- }
-
- //
- // Creates the ConstructorBuilder
- //
- public override bool Define ()
- {
- if (ConstructorBuilder != null)
- return true;
-
- MethodAttributes ca = (MethodAttributes.RTSpecialName |
- MethodAttributes.SpecialName);
-
- if ((ModFlags & Modifiers.STATIC) != 0) {
- ca |= MethodAttributes.Static | MethodAttributes.Private;
- } else {
- ca |= MethodAttributes.HideBySig;
-
- if ((ModFlags & Modifiers.PUBLIC) != 0)
- ca |= MethodAttributes.Public;
- else if ((ModFlags & Modifiers.PROTECTED) != 0){
- if ((ModFlags & Modifiers.INTERNAL) != 0)
- ca |= MethodAttributes.FamORAssem;
- else
- ca |= MethodAttributes.Family;
- } else if ((ModFlags & Modifiers.INTERNAL) != 0)
- ca |= MethodAttributes.Assembly;
- else
- ca |= MethodAttributes.Private;
- }
-
- if (!CheckAbstractAndExtern (block != null))
- return false;
-
- // Check if arguments were correct.
- if (!CheckBase ())
- return false;
-
- ConstructorBuilder = Parent.TypeBuilder.DefineConstructor (
- ca, CallingConventions,
- Parameters.GetEmitTypes ());
-
- if (Parent.PartialContainer.IsComImport) {
- if (!IsDefault ()) {
- Report.Error (669, Location, "`{0}': A class with the ComImport attribute cannot have a user-defined constructor",
- Parent.GetSignatureForError ());
- }
- ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall);
- }
-
- Parent.MemberCache.AddMember (ConstructorBuilder, this);
- TypeManager.AddMethod (ConstructorBuilder, this);
-
- // It's here only to report an error
- if (block != null && block.IsIterator) {
- member_type = TypeManager.void_type;
- Iterator.CreateIterator (this, Parent.PartialContainer, ModFlags);
- }
-
- return true;
- }
-
- //
- // Emits the code
- //
- public override void Emit ()
- {
- if ((ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0)
- PredefinedAttributes.Get.DebuggerHidden.EmitAttribute (ConstructorBuilder);
-
- if (OptAttributes != null)
- OptAttributes.Emit ();
-
- base.Emit ();
-
- EmitContext ec = CreateEmitContext (null, null);
-
- //
- // If we use a "this (...)" constructor initializer, then
- // do not emit field initializers, they are initialized in the other constructor
- //
- bool emit_field_initializers = ((ModFlags & Modifiers.STATIC) != 0) ||
- !(Initializer is ConstructorThisInitializer);
-
- if (emit_field_initializers)
- Parent.PartialContainer.ResolveFieldInitializers (ec);
-
- if (block != null) {
- // If this is a non-static `struct' constructor and doesn't have any
- // initializer, it must initialize all of the struct's fields.
- if ((Parent.PartialContainer.Kind == Kind.Struct) &&
- ((ModFlags & Modifiers.STATIC) == 0) && (Initializer == null))
- block.AddThisVariable (Parent, Location);
-
- if (!block.ResolveMeta (ec, Parameters))
- block = null;
-
- if (block != null && (ModFlags & Modifiers.STATIC) == 0){
- if (Parent.PartialContainer.Kind == Kind.Class && Initializer == null)
- Initializer = new GeneratedBaseInitializer (Location);
-
- //
- // Spec mandates that Initializers will not have `this' access
- //
- if (Initializer != null) {
- ec.IsStatic = true;
- ExpressionStatement expr = Initializer.Resolve (ConstructorBuilder, ec);
- ec.IsStatic = false;
- block.AddScopeStatement (new StatementExpression (expr));
- }
- }
- }
-
- Parameters.ApplyAttributes (ConstructorBuilder);
-
- SourceMethod source = null;
- if (block == null)
- ec.OmitDebuggingInfo = true;
- else
- source = SourceMethod.Create (Parent, ConstructorBuilder, block);
-
- bool unreachable = false;
- if (block != null) {
- if (!ec.ResolveTopBlock (null, block, Parameters, this, out unreachable))
- return;
-
- ec.EmitMeta (block);
-
- if (Report.Errors > 0)
- return;
-
- ec.EmitResolvedTopBlock (block, unreachable);
- }
-
- if (source != null)
- source.CloseMethod ();
-
- if (declarative_security != null) {
- foreach (DictionaryEntry de in declarative_security) {
- ConstructorBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
- }
- }
-
- block = null;
- }
-
- // Is never override
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- return null;
- }
-
- public override string GetSignatureForError()
- {
- return base.GetSignatureForError () + Parameters.GetSignatureForError ();
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
-
- protected override bool VerifyClsCompliance ()
- {
- if (!base.VerifyClsCompliance () || !IsExposedFromAssembly ()) {
- return false;
- }
-
- if (!Parameters.IsEmpty) {
- ArrayList al = (ArrayList)Parent.MemberCache.Members [ConstructorInfo.ConstructorName];
- if (al.Count > 2)
- MemberCache.VerifyClsParameterConflict (al, this, ConstructorBuilder);
-
- if (TypeManager.IsSubclassOf (Parent.TypeBuilder, TypeManager.attribute_type)) {
- foreach (Type param in Parameters.Types) {
- if (param.IsArray) {
- return true;
- }
- }
- }
- }
- has_compliant_args = true;
- return true;
- }
-
- #region IMethodData Members
-
- public MemberName MethodName {
- get {
- return MemberName;
- }
- }
-
- public Type ReturnType {
- get {
- return MemberType;
- }
- }
-
- public EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
- {
- ILGenerator ig_ = ConstructorBuilder.GetILGenerator ();
- EmitContext ec = new EmitContext (this, Parent, Location, ig_, TypeManager.void_type, ModFlags, true);
- ec.CurrentBlock = block;
- return ec;
- }
-
- public bool IsExcluded()
- {
- return false;
- }
-
- GenericMethod IMethodData.GenericMethod {
- get {
- return null;
- }
- }
-
- void IMethodData.EmitExtraSymbolInfo (SourceMethod source)
- { }
-
- #endregion
- }
-
- /// <summary>
- /// Interface for MethodData class. Holds links to parent members to avoid member duplication.
- /// </summary>
- public interface IMethodData
- {
- CallingConventions CallingConventions { get; }
- Location Location { get; }
- MemberName MethodName { get; }
- Type ReturnType { get; }
- GenericMethod GenericMethod { get; }
- ParametersCompiled ParameterInfo { get; }
-
- Attributes OptAttributes { get; }
- ToplevelBlock Block { get; set; }
-
- EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
- ObsoleteAttribute GetObsoleteAttribute ();
- string GetSignatureForError ();
- bool IsExcluded ();
- bool IsClsComplianceRequired ();
- void SetMemberIsUsed ();
- void EmitExtraSymbolInfo (SourceMethod source);
- }
-
- //
- // Encapsulates most of the Method's state
- //
- public class MethodData {
- static FieldInfo methodbuilder_attrs_field;
- public readonly IMethodData method;
-
- public readonly GenericMethod GenericMethod;
-
- //
- // Are we implementing an interface ?
- //
- public MethodInfo implementing;
-
- //
- // Protected data.
- //
- protected InterfaceMemberBase member;
- protected int modifiers;
- protected MethodAttributes flags;
- protected Type declaring_type;
- protected MethodInfo parent_method;
-
- MethodBuilder builder = null;
- public MethodBuilder MethodBuilder {
- get {
- return builder;
- }
- }
-
- public Type DeclaringType {
- get {
- return declaring_type;
- }
- }
-
- public MethodData (InterfaceMemberBase member,
- int modifiers, MethodAttributes flags, IMethodData method)
- {
- this.member = member;
- this.modifiers = modifiers;
- this.flags = flags;
-
- this.method = method;
- }
-
- public MethodData (InterfaceMemberBase member,
- int modifiers, MethodAttributes flags,
- IMethodData method, MethodBuilder builder,
- GenericMethod generic, MethodInfo parent_method)
- : this (member, modifiers, flags, method)
- {
- this.builder = builder;
- this.GenericMethod = generic;
- this.parent_method = parent_method;
- }
-
- public bool Define (DeclSpace parent, string method_full_name)
- {
- string name = method.MethodName.Basename;
-
- TypeContainer container = parent.PartialContainer;
-
- PendingImplementation pending = container.PendingImplementations;
- if (pending != null){
- implementing = pending.IsInterfaceMethod (name, member.InterfaceType, this);
-
- if (member.InterfaceType != null){
- if (implementing == null){
- if (member is PropertyBase) {
- Report.Error (550, method.Location, "`{0}' is an accessor not found in interface member `{1}{2}'",
- method.GetSignatureForError (), TypeManager.CSharpName (member.InterfaceType),
- member.GetSignatureForError ().Substring (member.GetSignatureForError ().LastIndexOf ('.')));
-
- } else {
- Report.Error (539, method.Location,
- "`{0}.{1}' in explicit interface declaration is not a member of interface",
- TypeManager.CSharpName (member.InterfaceType), member.ShortName);
- }
- return false;
- }
- if (implementing.IsSpecialName && !(method is AbstractPropertyEventMethod)) {
- Report.SymbolRelatedToPreviousError (implementing);
- Report.Error (683, method.Location, "`{0}' explicit method implementation cannot implement `{1}' because it is an accessor",
- member.GetSignatureForError (), TypeManager.CSharpSignature (implementing));
- return false;
- }
- } else {
- if (implementing != null) {
- AbstractPropertyEventMethod prop_method = method as AbstractPropertyEventMethod;
- if (prop_method == null) {
- if (TypeManager.IsSpecialMethod (implementing)) {
- Report.SymbolRelatedToPreviousError (implementing);
- Report.Error (470, method.Location, "Method `{0}' cannot implement interface accessor `{1}.{2}'",
- method.GetSignatureForError (), TypeManager.CSharpSignature (implementing),
- implementing.Name.StartsWith ("get_") ? "get" : "set");
- }
- } else if (implementing.DeclaringType.IsInterface) {
- if (!implementing.IsSpecialName) {
- Report.SymbolRelatedToPreviousError (implementing);
- Report.Error (686, method.Location, "Accessor `{0}' cannot implement interface member `{1}' for type `{2}'. Use an explicit interface implementation",
- method.GetSignatureForError (), TypeManager.CSharpSignature (implementing), container.GetSignatureForError ());
- return false;
- }
- PropertyBase.PropertyMethod pm = prop_method as PropertyBase.PropertyMethod;
- if (pm != null && pm.HasCustomAccessModifier && (pm.ModFlags & Modifiers.PUBLIC) == 0) {
- Report.SymbolRelatedToPreviousError (implementing);
- Report.Error (277, method.Location, "Accessor `{0}' must be declared public to implement interface member `{1}'",
- method.GetSignatureForError (), TypeManager.CSharpSignature (implementing, true));
- return false;
- }
- }
- }
- }
- }
-
- //
- // For implicit implementations, make sure we are public, for
- // explicit implementations, make sure we are private.
- //
- if (implementing != null){
- //
- // Setting null inside this block will trigger a more
- // verbose error reporting for missing interface implementations
- //
- // The "candidate" function has been flagged already
- // but it wont get cleared
- //
- if (member.IsExplicitImpl){
- if (method.ParameterInfo.HasParams && !TypeManager.GetParameterData (implementing).HasParams) {
- Report.SymbolRelatedToPreviousError (implementing);
- Report.Error (466, method.Location, "`{0}': the explicit interface implementation cannot introduce the params modifier",
- method.GetSignatureForError ());
- return false;
- }
- } else {
- if (implementing.DeclaringType.IsInterface) {
- //
- // If this is an interface method implementation,
- // check for public accessibility
- //
- if ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public)
- {
- implementing = null;
- }
- } else if ((flags & MethodAttributes.MemberAccessMask) == MethodAttributes.Private){
- // We may never be private.
- implementing = null;
-
- } else if ((modifiers & Modifiers.OVERRIDE) == 0){
- //
- // We may be protected if we're overriding something.
- //
- implementing = null;
- }
- }
-
- //
- // Static is not allowed
- //
- if ((modifiers & Modifiers.STATIC) != 0){
- implementing = null;
- }
- }
-
- //
- // If implementing is still valid, set flags
- //
- if (implementing != null){
- //
- // When implementing interface methods, set NewSlot
- // unless, we are overwriting a method.
- //
- if (implementing.DeclaringType.IsInterface){
- if ((modifiers & Modifiers.OVERRIDE) == 0)
- flags |= MethodAttributes.NewSlot;
- }
- flags |=
- MethodAttributes.Virtual |
- MethodAttributes.HideBySig;
-
- // Set Final unless we're virtual, abstract or already overriding a method.
- if ((modifiers & (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE)) == 0)
- flags |= MethodAttributes.Final;
- }
-
- DefineMethodBuilder (container, method_full_name, method.ParameterInfo);
-
- if (builder == null)
- return false;
-
- if (container.CurrentType != null)
- declaring_type = container.CurrentType;
- else
- declaring_type = container.TypeBuilder;
-
- if (implementing != null && member.IsExplicitImpl) {
- container.TypeBuilder.DefineMethodOverride (builder, implementing);
- }
-
- TypeManager.AddMethod (builder, method);
-
- if (GenericMethod != null) {
- bool is_override = member.IsExplicitImpl |
- ((modifiers & Modifiers.OVERRIDE) != 0);
-
- if (implementing != null)
- parent_method = implementing;
-
- EmitContext ec = method.CreateEmitContext (container, null);
- if (!GenericMethod.DefineType (ec, builder, parent_method, is_override))
- return false;
- }
-
- return true;
- }
-
-
- /// <summary>
- /// Create the MethodBuilder for the method
- /// </summary>
- void DefineMethodBuilder (TypeContainer container, string method_name, ParametersCompiled param)
- {
- if (builder == null) {
- builder = container.TypeBuilder.DefineMethod (
- method_name, flags, method.CallingConventions,
- TypeManager.TypeToReflectionType (method.ReturnType),
- param.GetEmitTypes ());
- return;
- }
-
-#if GMCS_SOURCE
- //
- // Generic method has been already defined to resolve method parameters
- // correctly when they use type parameters
- //
- builder.SetParameters (param.GetEmitTypes ());
- builder.SetReturnType (method.ReturnType);
-#endif
- if (builder.Attributes != flags) {
- try {
- if (methodbuilder_attrs_field == null)
- methodbuilder_attrs_field = typeof (MethodBuilder).GetField ("attrs", BindingFlags.NonPublic | BindingFlags.Instance);
- methodbuilder_attrs_field.SetValue (builder, flags);
- } catch {
- Report.RuntimeMissingSupport (method.Location, "Generic method MethodAttributes");
- }
- }
- }
-
- //
- // Emits the code
- //
- public void Emit (DeclSpace parent)
- {
- ToplevelBlock block = method.Block;
-
- EmitContext ec;
- if (block != null)
- ec = method.CreateEmitContext (parent, builder.GetILGenerator ());
- else
- ec = method.CreateEmitContext (parent, null);
-
- method.ParameterInfo.ApplyAttributes (MethodBuilder);
-
- if (GenericMethod != null)
- GenericMethod.EmitAttributes ();
-
- //
- // clear the pending implementation flag
- //
- if (implementing != null)
- parent.PartialContainer.PendingImplementations.ImplementMethod (method.MethodName.Basename,
- member.InterfaceType, this, member.IsExplicitImpl);
-
- SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
-
- ec.EmitTopBlock (method, block);
-
- if (source != null) {
- method.EmitExtraSymbolInfo (source);
- source.CloseMethod ();
- }
- }
- }
-
- public class Destructor : MethodOrOperator
- {
- const int AllowedModifiers =
- Modifiers.UNSAFE |
- Modifiers.EXTERN;
-
- static readonly string[] attribute_targets = new string [] { "method" };
-
- public static readonly string MetadataName = "Finalize";
-
- public Destructor (DeclSpace parent, int mod, ParametersCompiled parameters, Attributes attrs, Location l)
- : base (parent, null, TypeManager.system_void_expr, mod, AllowedModifiers,
- new MemberName (MetadataName, l), attrs, parameters)
- {
- ModFlags &= ~Modifiers.PRIVATE;
- ModFlags |= Modifiers.PROTECTED;
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Type == pa.Conditional) {
- Error_ConditionalAttributeIsNotValid ();
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- protected override bool CheckBase ()
- {
- flags |= MethodAttributes.Virtual;
-
- if (!base.CheckBase ())
- return false;
-
- if (Parent.PartialContainer.BaseCache == null)
- return true;
-
- Type base_type = Parent.PartialContainer.BaseCache.Container.Type;
- if (base_type != null && Block != null) {
- MethodGroupExpr method_expr = Expression.MethodLookup (Parent.TypeBuilder, base_type, MetadataName, Location);
- if (method_expr == null)
- throw new NotImplementedException ();
-
- method_expr.IsBase = true;
- method_expr.InstanceExpression = new CompilerGeneratedThis (Parent.TypeBuilder, Location);
-
- ToplevelBlock new_block = new ToplevelBlock (Block.StartLocation);
- new_block.EndLocation = Block.EndLocation;
-
- Block finaly_block = new ExplicitBlock (new_block, Location, Location);
- Block try_block = new Block (new_block, block);
-
- //
- // 0-size arguments to avoid CS0250 error
- // TODO: Should use AddScopeStatement or something else which emits correct
- // debugger scope
- //
- finaly_block.AddStatement (new StatementExpression (new Invocation (method_expr, new Arguments (0))));
- new_block.AddStatement (new TryFinally (try_block, finaly_block, Location));
-
- block = new_block;
- }
-
- return true;
- }
-
- public override string GetSignatureForError ()
- {
- return Parent.GetSignatureForError () + ".~" + Parent.MemberName.Name + "()";
- }
-
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- return null;
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
- }
-
- public abstract class MemberBase : MemberCore
- {
- protected FullNamedExpression type_name;
- protected Type member_type;
-
- public readonly DeclSpace ds;
- public readonly GenericMethod GenericMethod;
-
- protected MemberBase (DeclSpace parent, GenericMethod generic,
- FullNamedExpression type, int mod, int allowed_mod, int def_mod,
- MemberName name, Attributes attrs)
- : base (parent, name, attrs)
- {
- this.ds = generic != null ? generic : (DeclSpace) parent;
- this.type_name = type;
- ModFlags = Modifiers.Check (allowed_mod, mod, def_mod, Location);
- GenericMethod = generic;
- if (GenericMethod != null)
- GenericMethod.ModFlags = ModFlags;
- }
-
- //
- // Main member define entry
- //
- public override bool Define ()
- {
- DoMemberTypeIndependentChecks ();
-
- //
- // Returns false only when type resolution failed
- //
- if (!ResolveMemberType ())
- return false;
-
- DoMemberTypeDependentChecks ();
- return true;
- }
-
- //
- // Any type_name independent checks
- //
- protected virtual void DoMemberTypeIndependentChecks ()
- {
- if ((Parent.ModFlags & Modifiers.SEALED) != 0 &&
- (ModFlags & (Modifiers.VIRTUAL | Modifiers.ABSTRACT)) != 0) {
- Report.Error (549, Location, "New virtual member `{0}' is declared in a sealed class `{1}'",
- GetSignatureForError (), Parent.GetSignatureForError ());
- }
- }
-
- //
- // Any type_name dependent checks
- //
- protected virtual void DoMemberTypeDependentChecks ()
- {
- // verify accessibility
- if (!IsAccessibleAs (MemberType)) {
- Report.SymbolRelatedToPreviousError (MemberType);
- if (this is Property)
- Report.Error (53, Location,
- "Inconsistent accessibility: property type `" +
- TypeManager.CSharpName (MemberType) + "' is less " +
- "accessible than property `" + GetSignatureForError () + "'");
- else if (this is Indexer)
- Report.Error (54, Location,
- "Inconsistent accessibility: indexer return type `" +
- TypeManager.CSharpName (MemberType) + "' is less " +
- "accessible than indexer `" + GetSignatureForError () + "'");
- else if (this is MethodCore) {
- if (this is Operator)
- Report.Error (56, Location,
- "Inconsistent accessibility: return type `" +
- TypeManager.CSharpName (MemberType) + "' is less " +
- "accessible than operator `" + GetSignatureForError () + "'");
- else
- Report.Error (50, Location,
- "Inconsistent accessibility: return type `" +
- TypeManager.CSharpName (MemberType) + "' is less " +
- "accessible than method `" + GetSignatureForError () + "'");
- } else {
- Report.Error (52, Location,
- "Inconsistent accessibility: field type `" +
- TypeManager.CSharpName (MemberType) + "' is less " +
- "accessible than field `" + GetSignatureForError () + "'");
- }
- }
-
- Variance variance = this is Event ? Variance.Contravariant : Variance.Covariant;
- TypeManager.CheckTypeVariance (MemberType, variance, this);
- }
-
- protected bool IsTypePermitted ()
- {
- if (TypeManager.IsSpecialType (MemberType)) {
- Report.Error (610, Location, "Field or property cannot be of type `{0}'", TypeManager.CSharpName (MemberType));
- return false;
- }
- return true;
- }
-
- protected virtual bool CheckBase ()
- {
- CheckProtectedModifier ();
-
- return true;
- }
-
- public Type MemberType {
- get { return member_type; }
- }
-
- protected virtual bool ResolveMemberType ()
- {
- if (member_type != null)
- throw new InternalErrorException ("Multi-resolve");
-
- IResolveContext rc = GenericMethod == null ? this : (IResolveContext) ds;
- TypeExpr te = type_name.ResolveAsTypeTerminal (rc, false);
- if (te == null)
- return false;
-
- //
- // Replace original type name, error reporting can use fully resolved name
- //
- type_name = te;
-
- member_type = te.Type;
- return true;
- }
- }
-
- //
- // Abstract class for all fields
- //
- abstract public class FieldBase : MemberBase {
- public FieldBuilder FieldBuilder;
- public Status status;
- protected Expression initializer;
-
- [Flags]
- public enum Status : byte {
- HAS_OFFSET = 4 // Used by FieldMember.
- }
-
- static readonly string[] attribute_targets = new string [] { "field" };
-
- protected FieldBase (DeclSpace parent, FullNamedExpression type, int mod,
- int allowed_mod, MemberName name, Attributes attrs)
- : base (parent, null, type, mod, allowed_mod | Modifiers.ABSTRACT, Modifiers.PRIVATE,
- name, attrs)
- {
- if ((mod & Modifiers.ABSTRACT) != 0)
- Report.Error (681, Location, "The modifier 'abstract' is not valid on fields. Try using a property instead");
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Field;
- }
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Type == pa.FieldOffset) {
- status |= Status.HAS_OFFSET;
-
- if (!Parent.PartialContainer.HasExplicitLayout) {
- Report.Error (636, Location, "The FieldOffset attribute can only be placed on members of types marked with the StructLayout(LayoutKind.Explicit)");
- return;
- }
-
- if ((ModFlags & Modifiers.STATIC) != 0 || this is Const) {
- Report.Error (637, Location, "The FieldOffset attribute is not allowed on static or const fields");
- return;
- }
- }
-
-#if NET_2_0
- if (a.Type == pa.FixedBuffer) {
- Report.Error (1716, Location, "Do not use 'System.Runtime.CompilerServices.FixedBuffer' attribute. Use the 'fixed' field modifier instead");
- return;
- }
-#endif
-
-#if !NET_2_0
- if (a.Type == pa.MarshalAs) {
- UnmanagedMarshal marshal = a.GetMarshal (this);
- if (marshal != null) {
- FieldBuilder.SetMarshal (marshal);
- }
- return;
- }
-#endif
- if ((a.HasSecurityAttribute)) {
- a.Error_InvalidSecurityParent ();
- return;
- }
-
- FieldBuilder.SetCustomAttribute (cb);
- }
-
- protected override bool CheckBase ()
- {
- if (!base.CheckBase ())
- return false;
-
- MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, false);
- if (conflict_symbol == null) {
- if ((ModFlags & Modifiers.NEW) != 0) {
- Report.Warning (109, 4, Location, "The member `{0}' does not hide an inherited member. The new keyword is not required", GetSignatureForError ());
- }
- return true;
- }
-
- if ((ModFlags & (Modifiers.NEW | Modifiers.OVERRIDE | Modifiers.BACKING_FIELD)) == 0) {
- Report.SymbolRelatedToPreviousError (conflict_symbol);
- Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
- GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
- }
-
- return true;
- }
-
- protected override void DoMemberTypeDependentChecks ()
- {
- base.DoMemberTypeDependentChecks ();
-
- if (TypeManager.IsGenericParameter (MemberType))
- return;
-
- if (MemberType.IsSealed && MemberType.IsAbstract) {
- Error_VariableOfStaticClass (Location, GetSignatureForError (), MemberType);
- }
-
- CheckBase ();
- IsTypePermitted ();
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { return "F:"; }
- }
-
- public override void Emit ()
- {
- if (TypeManager.IsDynamicType (member_type))
- PredefinedAttributes.Get.Dynamic.EmitAttribute (FieldBuilder);
-
- if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0 && !Parent.IsCompilerGenerated)
- PredefinedAttributes.Get.CompilerGenerated.EmitAttribute (FieldBuilder);
-
- if (OptAttributes != null) {
- OptAttributes.Emit ();
- }
-
- if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & (Modifiers.STATIC | Modifiers.BACKING_FIELD)) == 0 && Parent.PartialContainer.HasExplicitLayout) {
- Report.Error (625, Location, "`{0}': Instance field types marked with StructLayout(LayoutKind.Explicit) must have a FieldOffset attribute", GetSignatureForError ());
- }
-
- base.Emit ();
- }
-
- public static void Error_VariableOfStaticClass (Location loc, string variable_name, Type static_class)
- {
- Report.SymbolRelatedToPreviousError (static_class);
- Report.Error (723, loc, "`{0}': cannot declare variables of static types",
- variable_name);
- }
-
- public Expression Initializer {
- set {
- if (value != null) {
- this.initializer = value;
- }
- }
- }
-
- protected virtual bool IsFieldClsCompliant {
- get {
- if (FieldBuilder == null)
- return true;
-
- return AttributeTester.IsClsCompliant (FieldBuilder.FieldType);
- }
- }
-
- public override string[] ValidAttributeTargets
- {
- get {
- return attribute_targets;
- }
- }
-
- protected override bool VerifyClsCompliance ()
- {
- if (!base.VerifyClsCompliance ())
- return false;
-
- if (!IsFieldClsCompliant) {
- Report.Warning (3003, 1, Location, "Type of `{0}' is not CLS-compliant",
- GetSignatureForError ());
- }
- return true;
- }
-
- public void SetAssigned ()
- {
- caching_flags |= Flags.IsAssigned;
- }
- }
-
- interface IFixedBuffer
- {
- FieldInfo Element { get; }
- Type ElementType { get; }
- }
-
- public class FixedFieldExternal: IFixedBuffer
- {
- FieldInfo element_field;
-
- public FixedFieldExternal (FieldInfo fi)
- {
- element_field = fi.FieldType.GetField (FixedField.FixedElementName);
- }
-
- #region IFixedField Members
-
- public FieldInfo Element {
- get {
- return element_field;
- }
- }
-
- public Type ElementType {
- get {
- return element_field.FieldType;
- }
- }
-
- #endregion
- }
-
- /// <summary>
- /// Fixed buffer implementation
- /// </summary>
- public class FixedField : FieldBase, IFixedBuffer
- {
- public const string FixedElementName = "FixedElementField";
- static int GlobalCounter = 0;
- static object[] ctor_args = new object[] { (short)LayoutKind.Sequential };
- static FieldInfo[] fi;
-
- TypeBuilder fixed_buffer_type;
- FieldBuilder element;
- Expression size_expr;
-
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE;
-
- public FixedField (DeclSpace parent, FullNamedExpression type, int mod, string name,
- Expression size_expr, Attributes attrs, Location loc):
- base (parent, type, mod, AllowedModifiers, new MemberName (name, loc), attrs)
- {
- if (RootContext.Version < LanguageVersion.ISO_2)
- Report.FeatureIsNotAvailable (loc, "fixed size buffers");
-
- this.size_expr = size_expr;
- }
-
- public override bool Define()
- {
- if (!base.Define ())
- return false;
-
- if (!TypeManager.IsPrimitiveType (MemberType)) {
- Report.Error (1663, Location, "`{0}': Fixed size buffers type must be one of the following: bool, byte, short, int, long, char, sbyte, ushort, uint, ulong, float or double",
- GetSignatureForError ());
- }
-
- // Create nested fixed buffer container
- string name = String.Format ("<{0}>__FixedBuffer{1}", Name, GlobalCounter++);
- fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name, Parent.Module.DefaultCharSetType |
- TypeAttributes.NestedPublic | TypeAttributes.Sealed | TypeAttributes.BeforeFieldInit, TypeManager.value_type);
-
- element = fixed_buffer_type.DefineField (FixedElementName, MemberType, FieldAttributes.Public);
- RootContext.RegisterCompilerGeneratedType (fixed_buffer_type);
-
- FieldBuilder = Parent.TypeBuilder.DefineField (Name, fixed_buffer_type, Modifiers.FieldAttr (ModFlags));
- Parent.MemberCache.AddMember (FieldBuilder, this);
- TypeManager.RegisterFieldBase (FieldBuilder, this);
-
- return true;
- }
-
- protected override void DoMemberTypeIndependentChecks ()
- {
- base.DoMemberTypeIndependentChecks ();
-
- if (!Parent.IsInUnsafeScope)
- Expression.UnsafeError (Location);
-
- if (Parent.PartialContainer.Kind != Kind.Struct) {
- Report.Error (1642, Location, "`{0}': Fixed size buffer fields may only be members of structs",
- GetSignatureForError ());
- }
- }
-
- public override void Emit()
- {
- EmitContext ec = new EmitContext (this, Parent, Location, null, TypeManager.void_type, ModFlags);
- Constant c = size_expr.ResolveAsConstant (ec, this);
- if (c == null)
- return;
-
- IntConstant buffer_size_const = c.ImplicitConversionRequired (ec, TypeManager.int32_type, Location) as IntConstant;
- if (buffer_size_const == null)
- return;
-
- int buffer_size = buffer_size_const.Value;
-
- if (buffer_size <= 0) {
- Report.Error (1665, Location, "`{0}': Fixed size buffers must have a length greater than zero", GetSignatureForError ());
- return;
- }
-
- int type_size = Expression.GetTypeSize (MemberType);
-
- if (buffer_size > int.MaxValue / type_size) {
- Report.Error (1664, Location, "Fixed size buffer `{0}' of length `{1}' and type `{2}' exceeded 2^31 limit",
- GetSignatureForError (), buffer_size.ToString (), TypeManager.CSharpName (MemberType));
- return;
- }
-
- buffer_size *= type_size;
- EmitFieldSize (buffer_size);
-
- PredefinedAttributes.Get.UnsafeValueType.EmitAttribute (fixed_buffer_type);
-
- base.Emit ();
- }
-
- void EmitFieldSize (int buffer_size)
- {
- CustomAttributeBuilder cab;
- PredefinedAttribute pa;
-
- pa = PredefinedAttributes.Get.StructLayout;
- if (pa.Constructor == null &&
- !pa.ResolveConstructor (Location, TypeManager.short_type))
- return;
-
- // TODO: It's not cleared
- if (fi == null)
- fi = new FieldInfo[] { pa.Type.GetField ("Size") };
-
- object[] fi_val = new object[] { buffer_size };
- cab = new CustomAttributeBuilder (pa.Constructor,
- ctor_args, fi, fi_val);
- fixed_buffer_type.SetCustomAttribute (cab);
-
- //
- // Don't emit FixedBufferAttribute attribute for private types
- //
- if ((ModFlags & Modifiers.PRIVATE) != 0)
- return;
-
- pa = PredefinedAttributes.Get.FixedBuffer;
- if (pa.Constructor == null &&
- !pa.ResolveConstructor (Location, TypeManager.type_type, TypeManager.int32_type))
- return;
-
- cab = new CustomAttributeBuilder (pa.Constructor, new object[] { MemberType, buffer_size });
- FieldBuilder.SetCustomAttribute (cab);
- }
-
- protected override bool IsFieldClsCompliant {
- get {
- return false;
- }
- }
-
- public void SetCharSet (TypeAttributes ta)
- {
- TypeAttributes cta = fixed_buffer_type.Attributes;
- if ((cta & TypeAttributes.UnicodeClass) != (ta & TypeAttributes.UnicodeClass))
- SetTypeBuilderCharSet ((cta & ~TypeAttributes.AutoClass) | TypeAttributes.UnicodeClass);
- else if ((cta & TypeAttributes.AutoClass) != (ta & TypeAttributes.AutoClass))
- SetTypeBuilderCharSet ((cta & ~TypeAttributes.UnicodeClass) | TypeAttributes.AutoClass);
- else if (cta == 0 && ta != 0)
- SetTypeBuilderCharSet (cta & ~(TypeAttributes.UnicodeClass | TypeAttributes.AutoClass));
- }
-
- void SetTypeBuilderCharSet (TypeAttributes ta)
- {
- MethodInfo mi = typeof (TypeBuilder).GetMethod ("SetCharSet", BindingFlags.Instance | BindingFlags.NonPublic);
- if (mi == null) {
- Report.RuntimeMissingSupport (Location, "TypeBuilder::SetCharSet");
- } else {
- mi.Invoke (fixed_buffer_type, new object [] { ta });
- }
- }
-
- #region IFixedField Members
-
- public FieldInfo Element {
- get {
- return element;
- }
- }
-
- public Type ElementType {
- get {
- return MemberType;
- }
- }
-
- #endregion
- }
-
- //
- // The Field class is used to represents class/struct fields during parsing.
- //
- public class Field : FieldBase {
- // <summary>
- // Modifiers allowed in a class declaration
- // </summary>
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.STATIC |
- Modifiers.VOLATILE |
- Modifiers.UNSAFE |
- Modifiers.READONLY;
-
- public Field (DeclSpace parent, FullNamedExpression type, int mod, MemberName name,
- Attributes attrs)
- : base (parent, type, mod, AllowedModifiers, name, attrs)
- {
- }
-
- bool CanBeVolatile ()
- {
- if (TypeManager.IsReferenceType (MemberType))
- return true;
-
- if (MemberType == TypeManager.bool_type || MemberType == TypeManager.char_type ||
- MemberType == TypeManager.sbyte_type || MemberType == TypeManager.byte_type ||
- MemberType == TypeManager.short_type || MemberType == TypeManager.ushort_type ||
- MemberType == TypeManager.int32_type || MemberType == TypeManager.uint32_type ||
- MemberType == TypeManager.float_type ||
- MemberType == TypeManager.intptr_type || MemberType == TypeManager.uintptr_type)
- return true;
-
- if (TypeManager.IsEnumType (MemberType))
- return true;
-
- return false;
- }
-
- bool CheckStructLayout (Type type, bool isStatic)
- {
- if (TypeManager.IsBuiltinType (type))
- return true;
-
- if (isStatic) {
- if (!TypeManager.IsValueType (type) || TypeManager.IsEqual (type, Parent.TypeBuilder))
- return true;
- }
-
- if (!TypeManager.IsEqual (TypeManager.DropGenericTypeArguments (type), Parent.TypeBuilder)) {
- if (!TypeManager.IsGenericType (type))
- return true;
-
- foreach (Type t in TypeManager.GetTypeArguments (type)) {
- if (!CheckStructLayout (t, false))
- return false;
- }
- return true;
- }
-
- Report.Error (523, Location,
- "Struct member `{0}' of type `{1}' causes a cycle in the struct layout",
- GetSignatureForError (), TypeManager.CSharpName (MemberType));
- return false;
- }
-
- public override bool Define ()
- {
- if (!base.Define ())
- return false;
-
- try {
-#if GMCS_SOURCE
- Type[] required_modifier = null;
- if ((ModFlags & Modifiers.VOLATILE) != 0) {
- if (TypeManager.isvolatile_type == null)
- TypeManager.isvolatile_type = TypeManager.CoreLookupType (
- "System.Runtime.CompilerServices", "IsVolatile", Kind.Class, true);
-
- if (TypeManager.isvolatile_type != null)
- required_modifier = new Type [] { TypeManager.isvolatile_type };
- }
-
- FieldBuilder = Parent.TypeBuilder.DefineField (
- Name, MemberType, required_modifier, null, Modifiers.FieldAttr (ModFlags));
-#else
- FieldBuilder = Parent.TypeBuilder.DefineField (
- Name, MemberType, Modifiers.FieldAttr (ModFlags));
-#endif
- // Don't cache inaccessible fields
- if ((ModFlags & Modifiers.BACKING_FIELD) == 0) {
- Parent.MemberCache.AddMember (FieldBuilder, this);
- }
-
- TypeManager.RegisterFieldBase (FieldBuilder, this);
- }
- catch (ArgumentException) {
- Report.RuntimeMissingSupport (Location, "`void' or `void*' field type");
- return false;
- }
-
- if (initializer != null) {
- ((TypeContainer) Parent).RegisterFieldForInitialization (this,
- new FieldInitializer (FieldBuilder, initializer, this));
- } else {
- if (Parent.PartialContainer.Kind == Kind.Struct)
- CheckStructLayout (member_type, (ModFlags & Modifiers.STATIC) != 0);
- }
-
- return true;
- }
-
- protected override void DoMemberTypeDependentChecks ()
- {
- base.DoMemberTypeDependentChecks ();
-
- if ((ModFlags & Modifiers.VOLATILE) != 0) {
- if (!CanBeVolatile ()) {
- Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
- GetSignatureForError (), TypeManager.CSharpName (MemberType));
- }
-
- if ((ModFlags & Modifiers.READONLY) != 0) {
- Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
- GetSignatureForError ());
- }
- }
- }
-
- protected override bool VerifyClsCompliance ()
- {
- if (!base.VerifyClsCompliance ())
- return false;
-
- if ((ModFlags & Modifiers.VOLATILE) != 0) {
- Report.Warning (3026, 1, Location, "CLS-compliant field `{0}' cannot be volatile", GetSignatureForError ());
- }
-
- return true;
- }
- }
-
- //
- // `set' and `get' accessors are represented with an Accessor.
- //
- public class Accessor {
- //
- // Null if the accessor is empty, or a Block if not
- //
- public const int AllowedModifiers =
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE;
-
- public ToplevelBlock Block;
- public Attributes Attributes;
- public Location Location;
- public int ModFlags;
- public ParametersCompiled Parameters;
-
- public Accessor (ToplevelBlock b, int mod, Attributes attrs, ParametersCompiled p, Location loc)
- {
- Block = b;
- Attributes = attrs;
- Location = loc;
- Parameters = p;
- ModFlags = Modifiers.Check (AllowedModifiers, mod, 0, loc);
- }
- }
-
- // Ooouh Martin, templates are missing here.
- // When it will be possible move here a lot of child code and template method type.
- public abstract class AbstractPropertyEventMethod : MemberCore, IMethodData {
- protected MethodData method_data;
- protected ToplevelBlock block;
- protected ListDictionary declarative_security;
-
- // The accessor are created even if they are not wanted.
- // But we need them because their names are reserved.
- // Field says whether accessor will be emited or not
- public readonly bool IsDummy;
-
- protected readonly string prefix;
-
- ReturnParameter return_attributes;
-
- public AbstractPropertyEventMethod (PropertyBasedMember member, string prefix)
- : base (member.Parent, SetupName (prefix, member, member.Location), null)
- {
- this.prefix = prefix;
- IsDummy = true;
- }
-
- public AbstractPropertyEventMethod (InterfaceMemberBase member, Accessor accessor,
- string prefix)
- : base (member.Parent, SetupName (prefix, member, accessor.Location),
- accessor.Attributes)
- {
- this.prefix = prefix;
- this.block = accessor.Block;
- }
-
- static MemberName SetupName (string prefix, InterfaceMemberBase member, Location loc)
- {
- return new MemberName (member.MemberName.Left, prefix + member.ShortName, loc);
- }
-
- public void UpdateName (InterfaceMemberBase member)
- {
- SetMemberName (SetupName (prefix, member, Location));
- }
-
- #region IMethodData Members
-
- public ToplevelBlock Block {
- get {
- return block;
- }
-
- set {
- block = value;
- }
- }
-
- public CallingConventions CallingConventions {
- get {
- return CallingConventions.Standard;
- }
- }
-
- public bool IsExcluded ()
- {
- return false;
- }
-
- GenericMethod IMethodData.GenericMethod {
- get {
- return null;
- }
- }
-
- public MemberName MethodName {
- get {
- return MemberName;
- }
- }
-
- public Type[] ParameterTypes {
- get {
- return ParameterInfo.Types;
- }
- }
-
- public abstract ParametersCompiled ParameterInfo { get ; }
- public abstract Type ReturnType { get; }
- public abstract EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
-
- #endregion
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Type == pa.CLSCompliant || a.Type == pa.Obsolete || a.Type == pa.Conditional) {
- Report.Error (1667, a.Location,
- "Attribute `{0}' is not valid on property or event accessors. It is valid on `{1}' declarations only",
- TypeManager.CSharpName (a.Type), a.GetValidTargets ());
- return;
- }
-
- if (a.IsValidSecurityAttribute ()) {
- if (declarative_security == null)
- declarative_security = new ListDictionary ();
- a.ExtractSecurityPermissionSet (declarative_security);
- return;
- }
-
- if (a.Target == AttributeTargets.Method) {
- method_data.MethodBuilder.SetCustomAttribute (cb);
- return;
- }
-
- if (a.Target == AttributeTargets.ReturnValue) {
- if (return_attributes == null)
- return_attributes = new ReturnParameter (method_data.MethodBuilder, Location);
-
- return_attributes.ApplyAttributeBuilder (a, cb, pa);
- return;
- }
-
- ApplyToExtraTarget (a, cb, pa);
- }
-
- protected virtual void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- throw new NotSupportedException ("You forgot to define special attribute target handling");
- }
-
- // It is not supported for the accessors
- public sealed override bool Define()
- {
- throw new NotSupportedException ();
- }
-
- public virtual void Emit (DeclSpace parent)
- {
- method_data.Emit (parent);
-
- if ((ModFlags & Modifiers.COMPILER_GENERATED) != 0 && !Parent.IsCompilerGenerated)
- PredefinedAttributes.Get.CompilerGenerated.EmitAttribute (method_data.MethodBuilder);
- if (((ModFlags & Modifiers.DEBUGGER_HIDDEN) != 0))
- PredefinedAttributes.Get.DebuggerHidden.EmitAttribute (method_data.MethodBuilder);
-
- if (TypeManager.IsDynamicType (ReturnType)) {
- return_attributes = new ReturnParameter (method_data.MethodBuilder, Location);
- return_attributes.EmitPredefined (PredefinedAttributes.Get.Dynamic, Location);
- }
-
- if (OptAttributes != null)
- OptAttributes.Emit ();
-
- if (declarative_security != null) {
- foreach (DictionaryEntry de in declarative_security) {
- method_data.MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
- }
- }
-
- block = null;
- }
-
- public override bool EnableOverloadChecks (MemberCore overload)
- {
- // This can only happen with indexers and it will
- // be catched as indexer difference
- if (overload is AbstractPropertyEventMethod)
- return true;
-
- if (overload is MethodCore) {
- caching_flags |= Flags.MethodOverloadsExist;
- return true;
- }
- return false;
- }
-
- public override bool IsClsComplianceRequired()
- {
- return false;
- }
-
- public bool IsDuplicateImplementation (MethodCore method)
- {
- if (!MemberName.Equals (method.MemberName))
- return false;
-
- Type[] param_types = method.ParameterTypes;
-
- if (param_types == null || param_types.Length != ParameterTypes.Length)
- return false;
-
- for (int i = 0; i < param_types.Length; i++)
- if (param_types [i] != ParameterTypes [i])
- return false;
-
- Report.SymbolRelatedToPreviousError (method);
- Report.Error (82, Location, "A member `{0}' is already reserved",
- method.GetSignatureForError ());
- return true;
- }
-
- public override bool IsUsed
- {
- get {
- if (IsDummy)
- return false;
-
- return base.IsUsed;
- }
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { throw new InvalidOperationException ("Unexpected attempt to get doc comment from " + this.GetType () + "."); }
- }
-
- void IMethodData.EmitExtraSymbolInfo (SourceMethod source)
- { }
- }
-
- //
- // Properties and Indexers both generate PropertyBuilders, we use this to share
- // their common bits.
- //
- abstract public class PropertyBase : PropertyBasedMember {
-
- public class GetMethod : PropertyMethod
- {
- static string[] attribute_targets = new string [] { "method", "return" };
-
- public GetMethod (PropertyBase method):
- base (method, "get_")
- {
- }
-
- public GetMethod (PropertyBase method, Accessor accessor):
- base (method, accessor, "get_")
- {
- }
-
- public override MethodBuilder Define (DeclSpace parent)
- {
- base.Define (parent);
-
- if (IsDummy)
- return null;
-
- method_data = new MethodData (method, ModFlags, flags, this);
-
- if (!method_data.Define (parent, method.GetFullName (MemberName)))
- return null;
-
- return method_data.MethodBuilder;
- }
-
- public override Type ReturnType {
- get {
- return method.MemberType;
- }
- }
-
- public override ParametersCompiled ParameterInfo {
- get {
- return ParametersCompiled.EmptyReadOnlyParameters;
- }
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
- }
-
- public class SetMethod : PropertyMethod {
-
- static string[] attribute_targets = new string [] { "method", "param", "return" };
- ImplicitParameter param_attr;
- protected ParametersCompiled parameters;
-
- public SetMethod (PropertyBase method) :
- base (method, "set_")
- {
- parameters = new ParametersCompiled (
- new Parameter (method.type_name, "value", Parameter.Modifier.NONE, null, Location));
- }
-
- public SetMethod (PropertyBase method, Accessor accessor):
- base (method, accessor, "set_")
- {
- this.parameters = accessor.Parameters;
- }
-
- protected override void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Target == AttributeTargets.Parameter) {
- if (param_attr == null)
- param_attr = new ImplicitParameter (method_data.MethodBuilder);
-
- param_attr.ApplyAttributeBuilder (a, cb, pa);
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- public override ParametersCompiled ParameterInfo {
- get {
- return parameters;
- }
- }
-
- public override MethodBuilder Define (DeclSpace parent)
- {
- parameters.Resolve (ResolveContext);
-
- base.Define (parent);
-
- if (IsDummy)
- return null;
-
- method_data = new MethodData (method, ModFlags, flags, this);
-
- if (!method_data.Define (parent, method.GetFullName (MemberName)))
- return null;
-
- return method_data.MethodBuilder;
- }
-
- public override Type ReturnType {
- get {
- return TypeManager.void_type;
- }
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
- }
-
- static string[] attribute_targets = new string [] { "property" };
-
- public abstract class PropertyMethod : AbstractPropertyEventMethod
- {
- protected readonly PropertyBase method;
- protected MethodAttributes flags;
-
- public PropertyMethod (PropertyBase method, string prefix)
- : base (method, prefix)
- {
- this.method = method;
- this.ModFlags = method.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE);
- }
-
- public PropertyMethod (PropertyBase method, Accessor accessor,
- string prefix)
- : base (method, accessor, prefix)
- {
- this.method = method;
- this.ModFlags = accessor.ModFlags | (method.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE));
-
- if (accessor.ModFlags != 0 && RootContext.Version == LanguageVersion.ISO_1) {
- Report.FeatureIsNotAvailable (Location, "access modifiers on properties");
- }
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.IsInternalMethodImplAttribute) {
- method.is_external_implementation = true;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Method;
- }
- }
-
- public override bool IsClsComplianceRequired ()
- {
- return method.IsClsComplianceRequired ();
- }
-
- public virtual MethodBuilder Define (DeclSpace parent)
- {
- CheckForDuplications ();
-
- if (IsDummy) {
- if (method.InterfaceType != null && parent.PartialContainer.PendingImplementations != null) {
- MethodInfo mi = parent.PartialContainer.PendingImplementations.IsInterfaceMethod (
- MethodName.Name, method.InterfaceType, new MethodData (method, ModFlags, flags, this));
- if (mi != null) {
- Report.SymbolRelatedToPreviousError (mi);
- Report.Error (551, Location, "Explicit interface implementation `{0}' is missing accessor `{1}'",
- method.GetSignatureForError (), TypeManager.CSharpSignature (mi, true));
- }
- }
- return null;
- }
-
- TypeContainer container = parent.PartialContainer;
-
- //
- // Check for custom access modifier
- //
- if ((ModFlags & Modifiers.Accessibility) == 0) {
- ModFlags |= method.ModFlags;
- flags = method.flags;
- } else {
- if (container.Kind == Kind.Interface)
- Report.Error (275, Location, "`{0}': accessibility modifiers may not be used on accessors in an interface",
- GetSignatureForError ());
-
- if ((method.ModFlags & Modifiers.ABSTRACT) != 0 && (ModFlags & Modifiers.PRIVATE) != 0) {
- Report.Error (442, Location, "`{0}': abstract properties cannot have private accessors", GetSignatureForError ());
- }
-
- CheckModifiers (ModFlags);
- ModFlags |= (method.ModFlags & (~Modifiers.Accessibility));
- ModFlags |= Modifiers.PROPERTY_CUSTOM;
- flags = Modifiers.MethodAttr (ModFlags);
- flags |= (method.flags & (~MethodAttributes.MemberAccessMask));
- }
-
- CheckAbstractAndExtern (block != null);
-
- if (block != null && block.IsIterator)
- Iterator.CreateIterator (this, Parent.PartialContainer, ModFlags);
-
- return null;
- }
-
- public bool HasCustomAccessModifier {
- get {
- return (ModFlags & Modifiers.PROPERTY_CUSTOM) != 0;
- }
- }
-
- public PropertyBase Property {
- get {
- return method;
- }
- }
-
- public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
- {
- return new EmitContext (this,
- ds, method.ds, method.Location, ig, ReturnType,
- method.ModFlags, false);
- }
-
- public override ObsoleteAttribute GetObsoleteAttribute ()
- {
- return method.GetObsoleteAttribute ();
- }
-
- public override string GetSignatureForError()
- {
- return method.GetSignatureForError () + '.' + prefix.Substring (0, 3);
- }
-
- void CheckModifiers (int modflags)
- {
- modflags &= Modifiers.Accessibility;
- int flags = 0;
- int mflags = method.ModFlags & Modifiers.Accessibility;
-
- if ((mflags & Modifiers.PUBLIC) != 0) {
- flags |= Modifiers.PROTECTED | Modifiers.INTERNAL | Modifiers.PRIVATE;
- }
- else if ((mflags & Modifiers.PROTECTED) != 0) {
- if ((mflags & Modifiers.INTERNAL) != 0)
- flags |= Modifiers.PROTECTED | Modifiers.INTERNAL;
-
- flags |= Modifiers.PRIVATE;
- }
- else if ((mflags & Modifiers.INTERNAL) != 0)
- flags |= Modifiers.PRIVATE;
-
- if ((mflags == modflags) || (modflags & (~flags)) != 0) {
- Report.Error (273, Location,
- "The accessibility modifier of the `{0}' accessor must be more restrictive than the modifier of the property or indexer `{1}'",
- GetSignatureForError (), method.GetSignatureForError ());
- }
- }
-
- protected bool CheckForDuplications ()
- {
- if ((caching_flags & Flags.MethodOverloadsExist) == 0)
- return true;
-
- return Parent.MemberCache.CheckExistingMembersOverloads (this, Name, ParameterInfo);
- }
- }
-
- public PropertyMethod Get, Set;
- public PropertyBuilder PropertyBuilder;
- public MethodBuilder GetBuilder, SetBuilder;
-
- protected bool define_set_first = false;
-
- public PropertyBase (DeclSpace parent, FullNamedExpression type, int mod_flags,
- int allowed_mod, MemberName name,
- Attributes attrs, bool define_set_first)
- : base (parent, null, type, mod_flags, allowed_mod, name, attrs)
- {
- this.define_set_first = define_set_first;
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.HasSecurityAttribute) {
- a.Error_InvalidSecurityParent ();
- return;
- }
-
- PropertyBuilder.SetCustomAttribute (cb);
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Property;
- }
- }
-
- protected override void DoMemberTypeDependentChecks ()
- {
- base.DoMemberTypeDependentChecks ();
-
- IsTypePermitted ();
-#if MS_COMPATIBLE
- if (MemberType.IsGenericParameter)
- return;
-#endif
-
- if ((MemberType.Attributes & Class.StaticClassAttribute) == Class.StaticClassAttribute) {
- Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
- }
- }
-
- protected override void DoMemberTypeIndependentChecks ()
- {
- base.DoMemberTypeIndependentChecks ();
-
- //
- // Accessors modifiers check
- //
- if ((Get.ModFlags & Modifiers.Accessibility) != 0 &&
- (Set.ModFlags & Modifiers.Accessibility) != 0) {
- Report.Error (274, Location, "`{0}': Cannot specify accessibility modifiers for both accessors of the property or indexer",
- GetSignatureForError ());
- }
-
- if ((ModFlags & Modifiers.OVERRIDE) == 0 &&
- (Get.IsDummy && (Set.ModFlags & Modifiers.Accessibility) != 0) ||
- (Set.IsDummy && (Get.ModFlags & Modifiers.Accessibility) != 0)) {
- Report.Error (276, Location,
- "`{0}': accessibility modifiers on accessors may only be used if the property or indexer has both a get and a set accessor",
- GetSignatureForError ());
- }
- }
-
- bool DefineGet ()
- {
- GetBuilder = Get.Define (Parent);
- return (Get.IsDummy) ? true : GetBuilder != null;
- }
-
- bool DefineSet (bool define)
- {
- if (!define)
- return true;
-
- SetBuilder = Set.Define (Parent);
- return (Set.IsDummy) ? true : SetBuilder != null;
- }
-
- protected bool DefineAccessors ()
- {
- return DefineSet (define_set_first) &&
- DefineGet () &&
- DefineSet (!define_set_first);
- }
-
- protected abstract PropertyInfo ResolveBaseProperty ();
-
- // TODO: rename to Resolve......
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- PropertyInfo base_property = ResolveBaseProperty ();
- if (base_property == null)
- return null;
-
- base_ret_type = base_property.PropertyType;
- MethodInfo get_accessor = base_property.GetGetMethod (true);
- MethodInfo set_accessor = base_property.GetSetMethod (true);
- MethodAttributes get_accessor_access = 0, set_accessor_access = 0;
-
- //
- // Check base property accessors conflict
- //
- if ((ModFlags & (Modifiers.OVERRIDE | Modifiers.NEW)) == Modifiers.OVERRIDE) {
- if (get_accessor == null) {
- if (Get != null && !Get.IsDummy) {
- Report.SymbolRelatedToPreviousError (base_property);
- Report.Error (545, Location,
- "`{0}.get': cannot override because `{1}' does not have an overridable get accessor",
- GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
- }
- } else {
- get_accessor_access = get_accessor.Attributes & MethodAttributes.MemberAccessMask;
-
- if (!Get.IsDummy && !CheckAccessModifiers (
- Modifiers.MethodAttr (Get.ModFlags) & MethodAttributes.MemberAccessMask, get_accessor_access, get_accessor))
- Error_CannotChangeAccessModifiers (Get.Location, get_accessor, get_accessor_access, ".get");
- }
-
- if (set_accessor == null) {
- if (Set != null && !Set.IsDummy) {
- Report.SymbolRelatedToPreviousError (base_property);
- Report.Error (546, Location,
- "`{0}.set': cannot override because `{1}' does not have an overridable set accessor",
- GetSignatureForError (), TypeManager.GetFullNameSignature (base_property));
- }
- } else {
- set_accessor_access = set_accessor.Attributes & MethodAttributes.MemberAccessMask;
-
- if (!Set.IsDummy && !CheckAccessModifiers (
- Modifiers.MethodAttr (Set.ModFlags) & MethodAttributes.MemberAccessMask, set_accessor_access, set_accessor))
- Error_CannotChangeAccessModifiers (Set.Location, set_accessor, set_accessor_access, ".set");
- }
- }
-
- // When one accessor does not exist and property hides base one
- // we need to propagate this upwards
- if (set_accessor == null)
- set_accessor = get_accessor;
-
- //
- // Get the less restrictive access
- //
- return get_accessor_access > set_accessor_access ? get_accessor : set_accessor;
- }
-
- public override void Emit ()
- {
- //
- // The PropertyBuilder can be null for explicit implementations, in that
- // case, we do not actually emit the ".property", so there is nowhere to
- // put the attribute
- //
- if (PropertyBuilder != null) {
- if (OptAttributes != null)
- OptAttributes.Emit ();
-
- if (TypeManager.IsDynamicType (member_type))
- PredefinedAttributes.Get.Dynamic.EmitAttribute (PropertyBuilder);
- }
-
- if (!Get.IsDummy)
- Get.Emit (Parent);
-
- if (!Set.IsDummy)
- Set.Emit (Parent);
-
- base.Emit ();
- }
-
- /// <summary>
- /// Tests whether accessors are not in collision with some method (CS0111)
- /// </summary>
- public bool AreAccessorsDuplicateImplementation (MethodCore mc)
- {
- return Get.IsDuplicateImplementation (mc) || Set.IsDuplicateImplementation (mc);
- }
-
- public override bool IsUsed
- {
- get {
- if (IsExplicitImpl)
- return true;
-
- return Get.IsUsed | Set.IsUsed;
- }
- }
-
- protected override void SetMemberName (MemberName new_name)
- {
- base.SetMemberName (new_name);
-
- Get.UpdateName (this);
- Set.UpdateName (this);
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { return "P:"; }
- }
- }
-
- public class Property : PropertyBase
- {
- public sealed class BackingField : Field
- {
- readonly Property property;
-
- public BackingField (Property p)
- : base (p.Parent, p.type_name,
- Modifiers.BACKING_FIELD | Modifiers.COMPILER_GENERATED | Modifiers.PRIVATE | (p.ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
- new MemberName ("<" + p.GetFullName (p.MemberName) + ">k__BackingField", p.Location), null)
- {
- this.property = p;
- }
-
- public override string GetSignatureForError ()
- {
- return property.GetSignatureForError ();
- }
- }
-
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.STATIC |
- Modifiers.SEALED |
- Modifiers.OVERRIDE |
- Modifiers.ABSTRACT |
- Modifiers.UNSAFE |
- Modifiers.EXTERN |
- Modifiers.VIRTUAL;
-
- const int AllowedInterfaceModifiers =
- Modifiers.NEW;
-
- public Property (DeclSpace parent, FullNamedExpression type, int mod,
- MemberName name, Attributes attrs, Accessor get_block,
- Accessor set_block, bool define_set_first)
- : this (parent, type, mod, name, attrs, get_block, set_block,
- define_set_first, null)
- {
- }
-
- public Property (DeclSpace parent, FullNamedExpression type, int mod,
- MemberName name, Attributes attrs, Accessor get_block,
- Accessor set_block, bool define_set_first, Block current_block)
- : base (parent, type, mod,
- parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
- name, attrs, define_set_first)
- {
- if (get_block == null)
- Get = new GetMethod (this);
- else
- Get = new GetMethod (this, get_block);
-
- if (set_block == null)
- Set = new SetMethod (this);
- else
- Set = new SetMethod (this, set_block);
-
- if (!IsInterface && (mod & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0 &&
- get_block != null && get_block.Block == null &&
- set_block != null && set_block.Block == null) {
- if (RootContext.Version <= LanguageVersion.ISO_2)
- Report.FeatureIsNotAvailable (Location, "automatically implemented properties");
-
- Get.ModFlags |= Modifiers.COMPILER_GENERATED;
- Set.ModFlags |= Modifiers.COMPILER_GENERATED;
- }
- }
-
- void CreateAutomaticProperty ()
- {
- // Create backing field
- Field field = new BackingField (this);
- if (!field.Define ())
- return;
-
- Parent.PartialContainer.AddField (field);
-
- FieldExpr fe = new FieldExpr (field.FieldBuilder, Location);
- if ((field.ModFlags & Modifiers.STATIC) == 0)
- fe.InstanceExpression = new CompilerGeneratedThis (fe.Type, Location);
-
- // Create get block
- Get.Block = new ToplevelBlock (ParametersCompiled.EmptyReadOnlyParameters, Location);
- Return r = new Return (fe, Location);
- Get.Block.AddStatement (r);
-
- // Create set block
- Set.Block = new ToplevelBlock (Set.ParameterInfo, Location);
- Assign a = new SimpleAssign (fe, new SimpleName ("value", Location));
- Set.Block.AddStatement (new StatementExpression (a));
- }
-
- public override bool Define ()
- {
- if (!base.Define ())
- return false;
-
- flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
-
- if ((Get.ModFlags & Modifiers.COMPILER_GENERATED) != 0)
- CreateAutomaticProperty ();
-
- if (!DefineAccessors ())
- return false;
-
- if (!CheckBase ())
- return false;
-
- // FIXME - PropertyAttributes.HasDefault ?
-
- PropertyBuilder = Parent.TypeBuilder.DefineProperty (
- GetFullName (MemberName), PropertyAttributes.None, MemberType, null);
-
- if (!Get.IsDummy) {
- PropertyBuilder.SetGetMethod (GetBuilder);
- Parent.MemberCache.AddMember (GetBuilder, Get);
- }
-
- if (!Set.IsDummy) {
- PropertyBuilder.SetSetMethod (SetBuilder);
- Parent.MemberCache.AddMember (SetBuilder, Set);
- }
-
- TypeManager.RegisterProperty (PropertyBuilder, this);
- Parent.MemberCache.AddMember (PropertyBuilder, this);
- return true;
- }
-
- public override void Emit ()
- {
- if (((Set.ModFlags | Get.ModFlags) & (Modifiers.STATIC | Modifiers.COMPILER_GENERATED)) == Modifiers.COMPILER_GENERATED && Parent.PartialContainer.HasExplicitLayout) {
- Report.Error (842, Location,
- "Automatically implemented property `{0}' cannot be used inside a type with an explicit StructLayout attribute",
- GetSignatureForError ());
- }
-
- base.Emit ();
- }
-
- protected override PropertyInfo ResolveBaseProperty ()
- {
- return Parent.PartialContainer.BaseCache.FindMemberToOverride (
- Parent.TypeBuilder, Name, ParametersCompiled.EmptyReadOnlyParameters, null, true) as PropertyInfo;
- }
- }
-
- /// </summary>
- /// Gigantic workaround for lameness in SRE follows :
- /// This class derives from EventInfo and attempts to basically
- /// wrap around the EventBuilder so that FindMembers can quickly
- /// return this in it search for members
- /// </summary>
- public class MyEventBuilder : EventInfo {
-
- //
- // We use this to "point" to our Builder which is
- // not really a MemberInfo
- //
- EventBuilder MyBuilder;
-
- //
- // We "catch" and wrap these methods
- //
- MethodInfo raise, remove, add;
-
- EventAttributes attributes;
- Type declaring_type, reflected_type, event_type;
- string name;
-
- Event my_event;
-
- public MyEventBuilder (Event ev, TypeBuilder type_builder, string name, EventAttributes event_attr, Type event_type)
- {
- MyBuilder = type_builder.DefineEvent (name, event_attr, event_type);
-
- // And now store the values in our own fields.
-
- declaring_type = type_builder;
-
- reflected_type = type_builder;
-
- attributes = event_attr;
- this.name = name;
- my_event = ev;
- this.event_type = event_type;
- }
-
- //
- // Methods that you have to override. Note that you only need
- // to "implement" the variants that take the argument (those are
- // the "abstract" methods, the others (GetAddMethod()) are
- // regular.
- //
- public override MethodInfo GetAddMethod (bool nonPublic)
- {
- return add;
- }
-
- public override MethodInfo GetRemoveMethod (bool nonPublic)
- {
- return remove;
- }
-
- public override MethodInfo GetRaiseMethod (bool nonPublic)
- {
- return raise;
- }
-
- //
- // These methods make "MyEventInfo" look like a Builder
- //
- public void SetRaiseMethod (MethodBuilder raiseMethod)
- {
- raise = raiseMethod;
- MyBuilder.SetRaiseMethod (raiseMethod);
- }
-
- public void SetRemoveOnMethod (MethodBuilder removeMethod)
- {
- remove = removeMethod;
- MyBuilder.SetRemoveOnMethod (removeMethod);
- }
-
- public void SetAddOnMethod (MethodBuilder addMethod)
- {
- add = addMethod;
- MyBuilder.SetAddOnMethod (addMethod);
- }
-
- public void SetCustomAttribute (CustomAttributeBuilder cb)
- {
- MyBuilder.SetCustomAttribute (cb);
- }
-
- public override object [] GetCustomAttributes (bool inherit)
- {
- // FIXME : There's nothing which can be seemingly done here because
- // we have no way of getting at the custom attribute objects of the
- // EventBuilder !
- return null;
- }
-
- public override object [] GetCustomAttributes (Type t, bool inherit)
- {
- // FIXME : Same here !
- return null;
- }
-
- public override bool IsDefined (Type t, bool b)
- {
- return true;
- }
-
- public override EventAttributes Attributes {
- get {
- return attributes;
- }
- }
-
- public override string Name {
- get {
- return name;
- }
- }
-
- public override Type DeclaringType {
- get {
- return declaring_type;
- }
- }
-
- public override Type ReflectedType {
- get {
- return reflected_type;
- }
- }
-
- public Type EventType {
- get {
- return event_type;
- }
- }
-
- public void SetUsed ()
- {
- if (my_event != null) {
-// my_event.SetAssigned ();
- my_event.SetMemberIsUsed ();
- }
- }
- }
-
- /// <summary>
- /// For case when event is declared like property (with add and remove accessors).
- /// </summary>
- public class EventProperty: Event {
- abstract class AEventPropertyAccessor : AEventAccessor
- {
- protected AEventPropertyAccessor (Event method, Accessor accessor, string prefix):
- base (method, accessor, prefix)
- {
- }
-
- public override MethodBuilder Define (DeclSpace ds)
- {
- CheckAbstractAndExtern (block != null);
- return base.Define (ds);
- }
-
- public override string GetSignatureForError ()
- {
- return method.GetSignatureForError () + "." + prefix.Substring (0, prefix.Length - 1);
- }
- }
-
- sealed class AddDelegateMethod: AEventPropertyAccessor
- {
- public AddDelegateMethod (Event method, Accessor accessor):
- base (method, accessor, AddPrefix)
- {
- }
- }
-
- sealed class RemoveDelegateMethod: AEventPropertyAccessor
- {
- public RemoveDelegateMethod (Event method, Accessor accessor):
- base (method, accessor, RemovePrefix)
- {
- }
- }
-
-
- static readonly string[] attribute_targets = new string [] { "event" }; // "property" target was disabled for 2.0 version
-
- public EventProperty (DeclSpace parent, FullNamedExpression type, int mod_flags,
- MemberName name,
- Attributes attrs, Accessor add, Accessor remove)
- : base (parent, type, mod_flags, name, attrs)
- {
- Add = new AddDelegateMethod (this, add);
- Remove = new RemoveDelegateMethod (this, remove);
- }
-
- public override bool Define()
- {
- if (!base.Define ())
- return false;
-
- SetMemberIsUsed ();
- return true;
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
- }
-
- /// <summary>
- /// Event is declared like field.
- /// </summary>
- public class EventField : Event {
- abstract class EventFieldAccessor : AEventAccessor
- {
- protected EventFieldAccessor (Event method, string prefix)
- : base (method, prefix)
- {
- }
-
- public override void Emit (DeclSpace parent)
- {
- if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0) {
- if (parent is Class) {
- MethodBuilder mb = method_data.MethodBuilder;
- mb.SetImplementationFlags (mb.GetMethodImplementationFlags () | MethodImplAttributes.Synchronized);
- }
-
- // TODO: because we cannot use generics yet
- FieldInfo field_info = ((EventField) method).BackingField.FieldBuilder;
- FieldExpr f_expr = new FieldExpr (field_info, Location);
- if ((method.ModFlags & Modifiers.STATIC) == 0)
- f_expr.InstanceExpression = new CompilerGeneratedThis (field_info.FieldType, Location);
-
- block = new ToplevelBlock (ParameterInfo, Location);
- block.AddStatement (new StatementExpression (
- new CompoundAssign (Operation,
- f_expr,
- block.GetParameterReference (ParameterInfo[0].Name, Location))));
- }
-
- base.Emit (parent);
- }
-
- protected abstract Binary.Operator Operation { get; }
- }
-
- sealed class AddDelegateMethod: EventFieldAccessor
- {
- public AddDelegateMethod (Event method):
- base (method, AddPrefix)
- {
- }
-
- protected override Binary.Operator Operation {
- get { return Binary.Operator.Addition; }
- }
- }
-
- sealed class RemoveDelegateMethod: EventFieldAccessor
- {
- public RemoveDelegateMethod (Event method):
- base (method, RemovePrefix)
- {
- }
-
- protected override Binary.Operator Operation {
- get { return Binary.Operator.Subtraction; }
- }
- }
-
-
- static readonly string[] attribute_targets = new string [] { "event", "field", "method" };
- static readonly string[] attribute_targets_interface = new string[] { "event", "method" };
-
- public Field BackingField;
- public Expression Initializer;
-
- public EventField (DeclSpace parent, FullNamedExpression type, int mod_flags, MemberName name, Attributes attrs)
- : base (parent, type, mod_flags, name, attrs)
- {
- Add = new AddDelegateMethod (this);
- Remove = new RemoveDelegateMethod (this);
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Target == AttributeTargets.Field) {
- BackingField.ApplyAttributeBuilder (a, cb, pa);
- return;
- }
-
- if (a.Target == AttributeTargets.Method) {
- int errors = Report.Errors;
- Add.ApplyAttributeBuilder (a, cb, pa);
- if (errors == Report.Errors)
- Remove.ApplyAttributeBuilder (a, cb, pa);
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- public override bool Define()
- {
- if (!base.Define ())
- return false;
-
- if (Initializer != null && (ModFlags & Modifiers.ABSTRACT) != 0) {
- Report.Error (74, Location, "`{0}': abstract event cannot have an initializer",
- GetSignatureForError ());
- }
-
- if (!HasBackingField) {
- SetMemberIsUsed ();
- return true;
- }
-
- // FIXME: We are unable to detect whether generic event is used because
- // we are using FieldExpr instead of EventExpr for event access in that
- // case. When this issue will be fixed this hack can be removed.
- if (TypeManager.IsGenericType (MemberType))
- SetMemberIsUsed ();
-
- if (Add.IsInterfaceImplementation)
- SetMemberIsUsed ();
-
- TypeManager.RegisterEventField (EventBuilder, this);
-
- BackingField = new Field (Parent,
- new TypeExpression (MemberType, Location),
- Modifiers.BACKING_FIELD | Modifiers.COMPILER_GENERATED | Modifiers.PRIVATE | (ModFlags & (Modifiers.STATIC | Modifiers.UNSAFE)),
- MemberName, null);
-
- Parent.PartialContainer.AddField (BackingField);
- BackingField.Initializer = Initializer;
- BackingField.ModFlags &= ~Modifiers.COMPILER_GENERATED;
-
- // Call define because we passed fields definition
- return BackingField.Define ();
- }
-
- bool HasBackingField {
- get {
- return !IsInterface && (ModFlags & Modifiers.ABSTRACT) == 0;
- }
- }
-
- public override string[] ValidAttributeTargets
- {
- get {
- return HasBackingField ? attribute_targets : attribute_targets_interface;
- }
- }
- }
-
- public abstract class Event : PropertyBasedMember {
- public abstract class AEventAccessor : AbstractPropertyEventMethod
- {
- protected readonly Event method;
- ImplicitParameter param_attr;
-
- static readonly string[] attribute_targets = new string [] { "method", "param", "return" };
-
- public const string AddPrefix = "add_";
- public const string RemovePrefix = "remove_";
-
- protected AEventAccessor (Event method, string prefix)
- : base (method, prefix)
- {
- this.method = method;
- this.ModFlags = method.ModFlags;
- }
-
- protected AEventAccessor (Event method, Accessor accessor, string prefix)
- : base (method, accessor, prefix)
- {
- this.method = method;
- this.ModFlags = method.ModFlags;
- }
-
- public bool IsInterfaceImplementation {
- get { return method_data.implementing != null; }
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.IsInternalMethodImplAttribute) {
- method.is_external_implementation = true;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- protected override void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Target == AttributeTargets.Parameter) {
- if (param_attr == null)
- param_attr = new ImplicitParameter (method_data.MethodBuilder);
-
- param_attr.ApplyAttributeBuilder (a, cb, pa);
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Method;
- }
- }
-
- public override bool IsClsComplianceRequired ()
- {
- return method.IsClsComplianceRequired ();
- }
-
- public virtual MethodBuilder Define (DeclSpace parent)
- {
- method_data = new MethodData (method, method.ModFlags,
- method.flags | MethodAttributes.HideBySig | MethodAttributes.SpecialName, this);
-
- if (!method_data.Define (parent, method.GetFullName (MemberName)))
- return null;
-
- MethodBuilder mb = method_data.MethodBuilder;
- ParameterInfo.ApplyAttributes (mb);
- return mb;
- }
-
- public override Type ReturnType {
- get {
- return TypeManager.void_type;
- }
- }
-
- public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
- {
- return new EmitContext (
- this, method.Parent, Location, ig, ReturnType,
- method.ModFlags, false);
- }
-
- public override ObsoleteAttribute GetObsoleteAttribute ()
- {
- return method.GetObsoleteAttribute ();
- }
-
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
- }
- }
-
- public override ParametersCompiled ParameterInfo {
- get {
- return method.parameters;
- }
- }
- }
-
-
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.STATIC |
- Modifiers.VIRTUAL |
- Modifiers.SEALED |
- Modifiers.OVERRIDE |
- Modifiers.UNSAFE |
- Modifiers.ABSTRACT |
- Modifiers.EXTERN;
-
- const int AllowedInterfaceModifiers =
- Modifiers.NEW;
-
- public AEventAccessor Add, Remove;
- public MyEventBuilder EventBuilder;
- public MethodBuilder AddBuilder, RemoveBuilder;
-
- ParametersCompiled parameters;
-
- protected Event (DeclSpace parent, FullNamedExpression type, int mod_flags, MemberName name, Attributes attrs)
- : base (parent, null, type, mod_flags,
- parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
- name, attrs)
- {
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if ((a.HasSecurityAttribute)) {
- a.Error_InvalidSecurityParent ();
- return;
- }
-
- EventBuilder.SetCustomAttribute (cb);
- }
-
- public bool AreAccessorsDuplicateImplementation (MethodCore mc)
- {
- return Add.IsDuplicateImplementation (mc) || Remove.IsDuplicateImplementation (mc);
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Event;
- }
- }
-
- public override bool Define ()
- {
- if (!base.Define ())
- return false;
-
- if (!TypeManager.IsDelegateType (MemberType)) {
- Report.Error (66, Location, "`{0}': event must be of a delegate type", GetSignatureForError ());
- }
-
- parameters = ParametersCompiled.CreateFullyResolved (
- new Parameter (null, "value", Parameter.Modifier.NONE, null, Location), MemberType);
-
- if (!CheckBase ())
- return false;
-
- if (TypeManager.delegate_combine_delegate_delegate == null) {
- TypeManager.delegate_combine_delegate_delegate = TypeManager.GetPredefinedMethod (
- TypeManager.delegate_type, "Combine", Location,
- TypeManager.delegate_type, TypeManager.delegate_type);
- }
- if (TypeManager.delegate_remove_delegate_delegate == null) {
- TypeManager.delegate_remove_delegate_delegate = TypeManager.GetPredefinedMethod (
- TypeManager.delegate_type, "Remove", Location,
- TypeManager.delegate_type, TypeManager.delegate_type);
- }
-
- //
- // Now define the accessors
- //
-
- AddBuilder = Add.Define (Parent);
- if (AddBuilder == null)
- return false;
-
- RemoveBuilder = Remove.Define (Parent);
- if (RemoveBuilder == null)
- return false;
-
- EventBuilder = new MyEventBuilder (this, Parent.TypeBuilder, Name, EventAttributes.None, MemberType);
- EventBuilder.SetAddOnMethod (AddBuilder);
- EventBuilder.SetRemoveOnMethod (RemoveBuilder);
-
- Parent.MemberCache.AddMember (EventBuilder, this);
- Parent.MemberCache.AddMember (AddBuilder, Add);
- Parent.MemberCache.AddMember (RemoveBuilder, Remove);
-
- return true;
- }
-
- public override void Emit ()
- {
- if (OptAttributes != null) {
- OptAttributes.Emit ();
- }
-
- Add.Emit (Parent);
- Remove.Emit (Parent);
-
- base.Emit ();
- }
-
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- MethodInfo mi = (MethodInfo) Parent.PartialContainer.BaseCache.FindBaseEvent (
- Parent.TypeBuilder, Name);
-
- if (mi == null)
- return null;
-
- AParametersCollection pd = TypeManager.GetParameterData (mi);
- base_ret_type = pd.Types [0];
- return mi;
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { return "E:"; }
- }
- }
-
-
- public class Indexer : PropertyBase
- {
- public class GetIndexerMethod : GetMethod
- {
- ParametersCompiled parameters;
-
- public GetIndexerMethod (Indexer method):
- base (method)
- {
- this.parameters = method.parameters;
- }
-
- public GetIndexerMethod (PropertyBase method, Accessor accessor):
- base (method, accessor)
- {
- parameters = accessor.Parameters;
- }
-
- public override MethodBuilder Define (DeclSpace parent)
- {
- parameters.Resolve (ResolveContext);
- return base.Define (parent);
- }
-
- public override bool EnableOverloadChecks (MemberCore overload)
- {
- if (base.EnableOverloadChecks (overload)) {
- overload.caching_flags |= Flags.MethodOverloadsExist;
- return true;
- }
-
- return false;
- }
-
- public override ParametersCompiled ParameterInfo {
- get {
- return parameters;
- }
- }
- }
-
- public class SetIndexerMethod: SetMethod
- {
- public SetIndexerMethod (Indexer method):
- base (method)
- {
- parameters = ParametersCompiled.MergeGenerated (method.parameters, false, parameters [0], null);
- }
-
- public SetIndexerMethod (PropertyBase method, Accessor accessor):
- base (method, accessor)
- {
- parameters = method.Get.IsDummy ? accessor.Parameters : accessor.Parameters.Clone ();
- }
-
- public override bool EnableOverloadChecks (MemberCore overload)
- {
- if (base.EnableOverloadChecks (overload)) {
- overload.caching_flags |= Flags.MethodOverloadsExist;
- return true;
- }
-
- return false;
- }
- }
-
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.VIRTUAL |
- Modifiers.SEALED |
- Modifiers.OVERRIDE |
- Modifiers.UNSAFE |
- Modifiers.EXTERN |
- Modifiers.ABSTRACT;
-
- const int AllowedInterfaceModifiers =
- Modifiers.NEW;
-
- public readonly ParametersCompiled parameters;
-
- public Indexer (DeclSpace parent, FullNamedExpression type, MemberName name, int mod,
- ParametersCompiled parameters, Attributes attrs,
- Accessor get_block, Accessor set_block, bool define_set_first)
- : base (parent, type, mod,
- parent.PartialContainer.Kind == Kind.Interface ? AllowedInterfaceModifiers : AllowedModifiers,
- name, attrs, define_set_first)
- {
- this.parameters = parameters;
-
- if (get_block == null)
- Get = new GetIndexerMethod (this);
- else
- Get = new GetIndexerMethod (this, get_block);
-
- if (set_block == null)
- Set = new SetIndexerMethod (this);
- else
- Set = new SetIndexerMethod (this, set_block);
- }
-
- protected override bool CheckForDuplications ()
- {
- return Parent.MemberCache.CheckExistingMembersOverloads (this, GetFullName (MemberName), parameters);
- }
-
- public override bool Define ()
- {
- if (!base.Define ())
- return false;
-
- if (!DefineParameters (parameters))
- return false;
-
- if (OptAttributes != null) {
- Attribute indexer_attr = OptAttributes.Search (PredefinedAttributes.Get.IndexerName);
- if (indexer_attr != null) {
- // Remove the attribute from the list because it is not emitted
- OptAttributes.Attrs.Remove (indexer_attr);
-
- string name = indexer_attr.GetIndexerAttributeValue ();
- if (name == null)
- return false;
-
- ShortName = name;
-
- if (IsExplicitImpl) {
- Report.Error (415, indexer_attr.Location,
- "The `IndexerName' attribute is valid only on an " +
- "indexer that is not an explicit interface member declaration");
- return false;
- }
-
- if ((ModFlags & Modifiers.OVERRIDE) != 0) {
- Report.Error (609, indexer_attr.Location,
- "Cannot set the `IndexerName' attribute on an indexer marked override");
- return false;
- }
- }
- }
-
- if (InterfaceType != null) {
- string base_IndexerName = TypeManager.IndexerPropertyName (InterfaceType);
- if (base_IndexerName != Name)
- ShortName = base_IndexerName;
- }
-
- if (!Parent.PartialContainer.AddMember (this) ||
- !Parent.PartialContainer.AddMember (Get) || !Parent.PartialContainer.AddMember (Set))
- return false;
-
- flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
-
- if (!DefineAccessors ())
- return false;
-
- if (!CheckBase ())
- return false;
-
- //
- // Now name the parameters
- //
- PropertyBuilder = Parent.TypeBuilder.DefineProperty (
- GetFullName (MemberName), PropertyAttributes.None, MemberType, parameters.GetEmitTypes ());
-
- if (!Get.IsDummy) {
- PropertyBuilder.SetGetMethod (GetBuilder);
- Parent.MemberCache.AddMember (GetBuilder, Get);
- }
-
- if (!Set.IsDummy) {
- PropertyBuilder.SetSetMethod (SetBuilder);
- Parent.MemberCache.AddMember (SetBuilder, Set);
- }
-
- TypeManager.RegisterIndexer (PropertyBuilder, parameters);
- Parent.MemberCache.AddMember (PropertyBuilder, this);
- return true;
- }
-
- public override bool EnableOverloadChecks (MemberCore overload)
- {
- if (overload is Indexer) {
- caching_flags |= Flags.MethodOverloadsExist;
- return true;
- }
-
- return base.EnableOverloadChecks (overload);
- }
-
- public override string GetDocCommentName (DeclSpace ds)
- {
- return DocUtil.GetMethodDocCommentName (this, parameters, ds);
- }
-
- public override string GetSignatureForError ()
- {
- StringBuilder sb = new StringBuilder (Parent.GetSignatureForError ());
- if (MemberName.Left != null) {
- sb.Append ('.');
- sb.Append (MemberName.Left.GetSignatureForError ());
- }
-
- sb.Append (".this");
- sb.Append (parameters.GetSignatureForError ().Replace ('(', '[').Replace (')', ']'));
- return sb.ToString ();
- }
-
- protected override PropertyInfo ResolveBaseProperty ()
- {
- return Parent.PartialContainer.BaseCache.FindMemberToOverride (
- Parent.TypeBuilder, Name, parameters, null, true) as PropertyInfo;
- }
-
- protected override bool VerifyClsCompliance ()
- {
- if (!base.VerifyClsCompliance ())
- return false;
-
- parameters.VerifyClsCompliance ();
- return true;
- }
- }
-
- public class Operator : MethodOrOperator {
-
- const int AllowedModifiers =
- Modifiers.PUBLIC |
- Modifiers.UNSAFE |
- Modifiers.EXTERN |
- Modifiers.STATIC;
-
- public enum OpType : byte {
-
- // Unary operators
- LogicalNot,
- OnesComplement,
- Increment,
- Decrement,
- True,
- False,
-
- // Unary and Binary operators
- Addition,
- Subtraction,
-
- UnaryPlus,
- UnaryNegation,
-
- // Binary operators
- Multiply,
- Division,
- Modulus,
- BitwiseAnd,
- BitwiseOr,
- ExclusiveOr,
- LeftShift,
- RightShift,
- Equality,
- Inequality,
- GreaterThan,
- LessThan,
- GreaterThanOrEqual,
- LessThanOrEqual,
-
- // Implicit and Explicit
- Implicit,
- Explicit,
-
- // Just because of enum
- TOP
- };
-
- public readonly OpType OperatorType;
-
- static readonly string [] [] names;
-
- static Operator ()
- {
- names = new string[(int)OpType.TOP][];
- names [(int) OpType.LogicalNot] = new string [] { "!", "op_LogicalNot" };
- names [(int) OpType.OnesComplement] = new string [] { "~", "op_OnesComplement" };
- names [(int) OpType.Increment] = new string [] { "++", "op_Increment" };
- names [(int) OpType.Decrement] = new string [] { "--", "op_Decrement" };
- names [(int) OpType.True] = new string [] { "true", "op_True" };
- names [(int) OpType.False] = new string [] { "false", "op_False" };
- names [(int) OpType.Addition] = new string [] { "+", "op_Addition" };
- names [(int) OpType.Subtraction] = new string [] { "-", "op_Subtraction" };
- names [(int) OpType.UnaryPlus] = new string [] { "+", "op_UnaryPlus" };
- names [(int) OpType.UnaryNegation] = new string [] { "-", "op_UnaryNegation" };
- names [(int) OpType.Multiply] = new string [] { "*", "op_Multiply" };
- names [(int) OpType.Division] = new string [] { "/", "op_Division" };
- names [(int) OpType.Modulus] = new string [] { "%", "op_Modulus" };
- names [(int) OpType.BitwiseAnd] = new string [] { "&", "op_BitwiseAnd" };
- names [(int) OpType.BitwiseOr] = new string [] { "|", "op_BitwiseOr" };
- names [(int) OpType.ExclusiveOr] = new string [] { "^", "op_ExclusiveOr" };
- names [(int) OpType.LeftShift] = new string [] { "<<", "op_LeftShift" };
- names [(int) OpType.RightShift] = new string [] { ">>", "op_RightShift" };
- names [(int) OpType.Equality] = new string [] { "==", "op_Equality" };
- names [(int) OpType.Inequality] = new string [] { "!=", "op_Inequality" };
- names [(int) OpType.GreaterThan] = new string [] { ">", "op_GreaterThan" };
- names [(int) OpType.LessThan] = new string [] { "<", "op_LessThan" };
- names [(int) OpType.GreaterThanOrEqual] = new string [] { ">=", "op_GreaterThanOrEqual" };
- names [(int) OpType.LessThanOrEqual] = new string [] { "<=", "op_LessThanOrEqual" };
- names [(int) OpType.Implicit] = new string [] { "implicit", "op_Implicit" };
- names [(int) OpType.Explicit] = new string [] { "explicit", "op_Explicit" };
- }
-
- public Operator (DeclSpace parent, OpType type, FullNamedExpression ret_type,
- int mod_flags, ParametersCompiled parameters,
- ToplevelBlock block, Attributes attrs, Location loc)
- : base (parent, null, ret_type, mod_flags, AllowedModifiers,
- new MemberName (GetMetadataName (type), loc), attrs, parameters)
- {
- OperatorType = type;
- Block = block;
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
- if (a.Type == pa.Conditional) {
- Error_ConditionalAttributeIsNotValid ();
- return;
- }
-
- base.ApplyAttributeBuilder (a, cb, pa);
- }
-
- public override bool Define ()
- {
- const int RequiredModifiers = Modifiers.PUBLIC | Modifiers.STATIC;
- if ((ModFlags & RequiredModifiers) != RequiredModifiers){
- Report.Error (558, Location, "User-defined operator `{0}' must be declared static and public", GetSignatureForError ());
- }
-
- if (!base.Define ())
- return false;
-
- // imlicit and explicit operator of same types are not allowed
- if (OperatorType == OpType.Explicit)
- Parent.MemberCache.CheckExistingMembersOverloads (this, GetMetadataName (OpType.Implicit), Parameters);
- else if (OperatorType == OpType.Implicit)
- Parent.MemberCache.CheckExistingMembersOverloads (this, GetMetadataName (OpType.Explicit), Parameters);
-
- Type declaring_type = MethodData.DeclaringType;
- Type return_type = MemberType;
- Type first_arg_type = ParameterTypes [0];
-
- Type first_arg_type_unwrap = first_arg_type;
- if (TypeManager.IsNullableType (first_arg_type))
- first_arg_type_unwrap = TypeManager.TypeToCoreType (TypeManager.GetTypeArguments (first_arg_type) [0]);
-
- Type return_type_unwrap = return_type;
- if (TypeManager.IsNullableType (return_type))
- return_type_unwrap = TypeManager.TypeToCoreType (TypeManager.GetTypeArguments (return_type) [0]);
-
- if (TypeManager.IsDynamicType (return_type) || TypeManager.IsDynamicType (first_arg_type)) {
- Report.Error (1964, Location,
- "User-defined operator `{0}' cannot convert to or from the dynamic type",
- GetSignatureForError ());
-
- return false;
- }
-
- //
- // Rules for conversion operators
- //
- if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
- if (first_arg_type_unwrap == return_type_unwrap && first_arg_type_unwrap == declaring_type){
- Report.Error (555, Location,
- "User-defined operator cannot take an object of the enclosing type and convert to an object of the enclosing type");
- return false;
- }
-
- Type conv_type;
- if (TypeManager.IsEqual (declaring_type, return_type) || declaring_type == return_type_unwrap) {
- conv_type = first_arg_type;
- } else if (TypeManager.IsEqual (declaring_type, first_arg_type) || declaring_type == first_arg_type_unwrap) {
- conv_type = return_type;
- } else {
- Report.Error (556, Location,
- "User-defined conversion must convert to or from the enclosing type");
- return false;
- }
-
- //
- // Because IsInterface and IsClass are not supported
- //
- if (!TypeManager.IsGenericParameter (conv_type)) {
- if (conv_type.IsInterface) {
- Report.Error (552, Location, "User-defined conversion `{0}' cannot convert to or from an interface type",
- GetSignatureForError ());
- return false;
- }
-
- if (conv_type.IsClass) {
- if (TypeManager.IsSubclassOf (declaring_type, conv_type)) {
- Report.Error (553, Location, "User-defined conversion `{0}' cannot convert to or from a base class",
- GetSignatureForError ());
- return false;
- }
-
- if (TypeManager.IsSubclassOf (conv_type, declaring_type)) {
- Report.Error (554, Location, "User-defined conversion `{0}' cannot convert to or from a derived class",
- GetSignatureForError ());
- return false;
- }
- }
- }
- } else if (OperatorType == OpType.LeftShift || OperatorType == OpType.RightShift) {
- if (first_arg_type != declaring_type || Parameters.Types [1] != TypeManager.int32_type) {
- Report.Error (564, Location, "Overloaded shift operator must have the type of the first operand be the containing type, and the type of the second operand must be int");
- return false;
- }
- } else if (Parameters.Count == 1) {
- // Checks for Unary operators
-
- if (OperatorType == OpType.Increment || OperatorType == OpType.Decrement) {
- if (return_type != declaring_type && !TypeManager.IsSubclassOf (return_type, declaring_type)) {
- Report.Error (448, Location,
- "The return type for ++ or -- operator must be the containing type or derived from the containing type");
- return false;
- }
- if (first_arg_type != declaring_type) {
- Report.Error (
- 559, Location, "The parameter type for ++ or -- operator must be the containing type");
- return false;
- }
- }
-
- if (!TypeManager.IsEqual (first_arg_type_unwrap, declaring_type)){
- Report.Error (562, Location,
- "The parameter type of a unary operator must be the containing type");
- return false;
- }
-
- if (OperatorType == OpType.True || OperatorType == OpType.False) {
- if (return_type != TypeManager.bool_type){
- Report.Error (
- 215, Location,
- "The return type of operator True or False " +
- "must be bool");
- return false;
- }
- }
-
- } else {
- // Checks for Binary operators
-
- if (first_arg_type != declaring_type &&
- Parameters.Types [1] != declaring_type){
- Report.Error (
- 563, Location,
- "One of the parameters of a binary operator must " +
- "be the containing type");
- return false;
- }
- }
-
- return true;
- }
-
- protected override bool ResolveMemberType ()
- {
- if (!base.ResolveMemberType ())
- return false;
-
- flags |= MethodAttributes.SpecialName | MethodAttributes.HideBySig;
- return true;
- }
-
- // Operator cannot be override
- protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
- {
- return null;
- }
-
- public static string GetName (OpType ot)
- {
- return names [(int) ot] [0];
- }
-
- public static string GetName (string metadata_name)
- {
- for (int i = 0; i < names.Length; ++i) {
- if (names [i] [1] == metadata_name)
- return names [i] [0];
- }
- return null;
- }
-
- public static string GetMetadataName (OpType ot)
- {
- return names [(int) ot] [1];
- }
-
- public static string GetMetadataName (string name)
- {
- for (int i = 0; i < names.Length; ++i) {
- if (names [i] [0] == name)
- return names [i] [1];
- }
- return null;
- }
-
- public OpType GetMatchingOperator ()
- {
- switch (OperatorType) {
- case OpType.Equality:
- return OpType.Inequality;
- case OpType.Inequality:
- return OpType.Equality;
- case OpType.True:
- return OpType.False;
- case OpType.False:
- return OpType.True;
- case OpType.GreaterThan:
- return OpType.LessThan;
- case OpType.LessThan:
- return OpType.GreaterThan;
- case OpType.GreaterThanOrEqual:
- return OpType.LessThanOrEqual;
- case OpType.LessThanOrEqual:
- return OpType.GreaterThanOrEqual;
- default:
- return OpType.TOP;
- }
- }
-
- public override string GetSignatureForError ()
- {
- StringBuilder sb = new StringBuilder ();
- if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
- sb.AppendFormat ("{0}.{1} operator {2}",
- Parent.GetSignatureForError (), GetName (OperatorType), type_name.GetSignatureForError ());
- }
- else {
- sb.AppendFormat ("{0}.operator {1}", Parent.GetSignatureForError (), GetName (OperatorType));
- }
-
- sb.Append (Parameters.GetSignatureForError ());
- return sb.ToString ();
- }
- }
-
- //
- // This is used to compare method signatures
- //
- struct MethodSignature {
- public string Name;
- public Type RetType;
- public Type [] Parameters;
-
- /// <summary>
- /// This delegate is used to extract methods which have the
- /// same signature as the argument
- /// </summary>
- public static MemberFilter method_signature_filter = new MemberFilter (MemberSignatureCompare);
-
- public MethodSignature (string name, Type ret_type, Type [] parameters)
- {
- Name = name;
- RetType = ret_type;
-
- if (parameters == null)
- Parameters = Type.EmptyTypes;
- else
- Parameters = parameters;
- }
-
- public override string ToString ()
- {
- string pars = "";
- if (Parameters.Length != 0){
- System.Text.StringBuilder sb = new System.Text.StringBuilder ();
- for (int i = 0; i < Parameters.Length; i++){
- sb.Append (Parameters [i]);
- if (i+1 < Parameters.Length)
- sb.Append (", ");
- }
- pars = sb.ToString ();
- }
-
- return String.Format ("{0} {1} ({2})", RetType, Name, pars);
- }
-
- public override int GetHashCode ()
- {
- return Name.GetHashCode ();
- }
-
- public override bool Equals (Object o)
- {
- MethodSignature other = (MethodSignature) o;
-
- if (other.Name != Name)
- return false;
-
- if (other.RetType != RetType)
- return false;
-
- if (Parameters == null){
- if (other.Parameters == null)
- return true;
- return false;
- }
-
- if (other.Parameters == null)
- return false;
-
- int c = Parameters.Length;
- if (other.Parameters.Length != c)
- return false;
-
- for (int i = 0; i < c; i++)
- if (other.Parameters [i] != Parameters [i])
- return false;
-
- return true;
- }
-
- static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
- {
- MethodSignature sig = (MethodSignature) filter_criteria;
-
- if (m.Name != sig.Name)
- return false;
-
- Type ReturnType;
- MethodInfo mi = m as MethodInfo;
- PropertyInfo pi = m as PropertyInfo;
-
- if (mi != null)
- ReturnType = mi.ReturnType;
- else if (pi != null)
- ReturnType = pi.PropertyType;
- else
- return false;
-
- //
- // we use sig.RetType == null to mean `do not check the
- // method return value.
- //
- if (sig.RetType != null) {
- if (!TypeManager.IsEqual (ReturnType, sig.RetType))
- return false;
- }
-
- Type [] args;
- if (mi != null)
- args = TypeManager.GetParameterData (mi).Types;
- else
- args = TypeManager.GetParameterData (pi).Types;
- Type [] sigp = sig.Parameters;
-
- if (args.Length != sigp.Length)
- return false;
-
- for (int i = args.Length - 1; i >= 0; i--)
- if (!TypeManager.IsEqual (args [i], sigp [i]))
- return false;