--- /dev/null
+//
+// class.cs: Class and Struct handlers
+//
+// Authors: Miguel de Icaza (miguel@gnu.org)
+// Martin Baulig (martin@ximian.com)
+// Marek Safar (marek.safar@seznam.cz)
+//
+// Licensed under the terms of the GNU GPL
+//
+// (C) 2001, 2002, 2003 Ximian, Inc (http://www.ximian.com)
+// (C) 2004 Novell, Inc
+//
+//
+// 2002-10-11 Miguel de Icaza <miguel@ximian.com>
+//
+// * class.cs: Following the comment from 2002-09-26 to AddMethod, I
+// have fixed a remaining problem: not every AddXXXX was adding a
+// fully qualified name.
+//
+// Now everyone registers a fully qualified name in the DeclSpace as
+// being defined instead of the partial name.
+//
+// Downsides: we are slower than we need to be due to the excess
+// copies and the names being registered this way.
+//
+// The reason for this is that we currently depend (on the corlib
+// bootstrap for instance) that types are fully qualified, because
+// we dump all the types in the namespace, and we should really have
+// types inserted into the proper namespace, so we can only store the
+// basenames in the defined_names array.
+//
+//
+#define CACHE
+using System;
+using System.Collections;
+using System.Collections.Specialized;
+using System.Reflection;
+using System.Reflection.Emit;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Security;
+using System.Security.Permissions;
+using System.Text;
+
+#if BOOTSTRAP_WITH_OLDLIB
+using XmlElement = System.Object;
+#else
+using System.Xml;
+#endif
+
+using Mono.CompilerServices.SymbolWriter;
+
+namespace Mono.CSharp {
+
+ public enum Kind {
+ Root,
+ Struct,
+ Class,
+ Interface
+ }
+
+ /// <summary>
+ /// This is the base class for structs and classes.
+ /// </summary>
+ public abstract class TypeContainer : DeclSpace, IMemberContainer {
+
+ public class MemberCoreArrayList: ArrayList
+ {
+ /// <summary>
+ /// Defines the MemberCore objects that are in this array
+ /// </summary>
+ public virtual void DefineContainerMembers ()
+ {
+ foreach (MemberCore mc in this) {
+ try {
+ mc.Define ();
+ } catch (Exception e) {
+ throw new InternalErrorException (mc.Location, mc.GetSignatureForError (), e);
+ }
+ }
+ }
+
+ public virtual void Emit ()
+ {
+ foreach (MemberCore mc in this)
+ mc.Emit ();
+ }
+ }
+
+ public class MethodArrayList : MemberCoreArrayList
+ {
+ [Flags]
+ enum CachedMethods {
+ Equals = 1,
+ GetHashCode = 1 << 1
+ }
+
+ CachedMethods cached_method;
+ TypeContainer container;
+
+ public MethodArrayList (TypeContainer container)
+ {
+ this.container = container;
+ }
+
+ /// <summary>
+ /// Method container contains Equals method
+ /// </summary>
+ public bool HasEquals {
+ set {
+ cached_method |= CachedMethods.Equals;
+ }
+
+ get {
+ return (cached_method & CachedMethods.Equals) != 0;
+ }
+ }
+
+ /// <summary>
+ /// Method container contains GetHashCode method
+ /// </summary>
+ public bool HasGetHashCode {
+ set {
+ cached_method |= CachedMethods.GetHashCode;
+ }
+
+ get {
+ return (cached_method & CachedMethods.GetHashCode) != 0;
+ }
+ }
+
+ public override void DefineContainerMembers ()
+ {
+ base.DefineContainerMembers ();
+
+ if (HasEquals && !HasGetHashCode) {
+ Report.Warning (659, 3, container.Location, "`{0}' overrides Object.Equals(object) but does not override Object.GetHashCode()", container.GetSignatureForError ());
+ }
+ }
+ }
+
+ public sealed class IndexerArrayList : MemberCoreArrayList
+ {
+ /// <summary>
+ /// The indexer name for this container
+ /// </summary>
+ public string IndexerName = DefaultIndexerName;
+
+ bool seen_normal_indexers = false;
+
+ TypeContainer container;
+
+ public IndexerArrayList (TypeContainer container)
+ {
+ this.container = container;
+ }
+
+ /// <summary>
+ /// Defines the indexers, and also verifies that the IndexerNameAttribute in the
+ /// class is consistent. Either it is `Item' or it is the name defined by all the
+ /// indexers with the `IndexerName' attribute.
+ ///
+ /// Turns out that the IndexerNameAttribute is applied to each indexer,
+ /// but it is never emitted, instead a DefaultMember attribute is attached
+ /// to the class.
+ /// </summary>
+ public override void DefineContainerMembers()
+ {
+ base.DefineContainerMembers ();
+
+ string class_indexer_name = null;
+
+ //
+ // If there's both an explicit and an implicit interface implementation, the
+ // explicit one actually implements the interface while the other one is just
+ // a normal indexer. See bug #37714.
+ //
+
+ // Invariant maintained by AddIndexer(): All explicit interface indexers precede normal indexers
+ foreach (Indexer i in this) {
+ if (i.InterfaceType != null) {
+ if (seen_normal_indexers)
+ throw new Exception ("Internal Error: 'Indexers' array not sorted properly.");
+ continue;
+ }
+
+ seen_normal_indexers = true;
+
+ if (class_indexer_name == null) {
+ class_indexer_name = i.ShortName;
+ continue;
+ }
+
+ if (i.ShortName != class_indexer_name)
+ Report.Error (668, i.Location, "Two indexers have different names; the IndexerName attribute must be used with the same name on every indexer within a type");
+ }
+
+ if (class_indexer_name != null)
+ IndexerName = class_indexer_name;
+ }
+
+ public override void Emit ()
+ {
+ base.Emit ();
+
+ if (!seen_normal_indexers)
+ return;
+
+ CustomAttributeBuilder cb = new CustomAttributeBuilder (TypeManager.default_member_ctor, new string [] { IndexerName });
+ container.TypeBuilder.SetCustomAttribute (cb);
+ }
+ }
+
+ public class OperatorArrayList: MemberCoreArrayList
+ {
+ TypeContainer container;
+
+ public OperatorArrayList (TypeContainer container)
+ {
+ this.container = container;
+ }
+
+ //
+ // Operator pair checking
+ //
+ class OperatorEntry
+ {
+ public int flags;
+ public Type ret_type;
+ public Type type1, type2;
+ public Operator op;
+ public Operator.OpType ot;
+
+ public OperatorEntry (int f, Operator o)
+ {
+ flags = f;
+
+ ret_type = o.MemberType;
+ Type [] pt = o.ParameterTypes;
+ type1 = pt [0];
+ type2 = pt [1];
+ op = o;
+ ot = o.OperatorType;
+ }
+
+ public override int GetHashCode ()
+ {
+ return ret_type.GetHashCode ();
+ }
+
+ public override bool Equals (object o)
+ {
+ OperatorEntry other = (OperatorEntry) o;
+
+ if (other.ret_type != ret_type)
+ return false;
+ if (other.type1 != type1)
+ return false;
+ if (other.type2 != type2)
+ return false;
+ return true;
+ }
+ }
+
+ //
+ // Checks that some operators come in pairs:
+ // == and !=
+ // > and <
+ // >= and <=
+ // true and false
+ //
+ // They are matched based on the return type and the argument types
+ //
+ void CheckPairedOperators ()
+ {
+ IDictionary pairs = new HybridDictionary ();
+ Operator true_op = null;
+ Operator false_op = null;
+ bool has_equality_or_inequality = false;
+
+ // Register all the operators we care about.
+ foreach (Operator op in this){
+ int reg = 0;
+
+ // Skip erroneous code.
+ if (op.MethodBuilder == null)
+ continue;
+
+ switch (op.OperatorType){
+ case Operator.OpType.Equality:
+ reg = 1;
+ has_equality_or_inequality = true;
+ break;
+ case Operator.OpType.Inequality:
+ reg = 2;
+ has_equality_or_inequality = true;
+ break;
+
+ case Operator.OpType.True:
+ true_op = op;
+ break;
+ case Operator.OpType.False:
+ false_op = op;
+ break;
+
+ case Operator.OpType.GreaterThan:
+ reg = 1; break;
+ case Operator.OpType.LessThan:
+ reg = 2; break;
+
+ case Operator.OpType.GreaterThanOrEqual:
+ reg = 1; break;
+ case Operator.OpType.LessThanOrEqual:
+ reg = 2; break;
+ }
+ if (reg == 0)
+ continue;
+
+ OperatorEntry oe = new OperatorEntry (reg, op);
+
+ object o = pairs [oe];
+ if (o == null)
+ pairs [oe] = oe;
+ else {
+ oe = (OperatorEntry) o;
+ oe.flags |= reg;
+ }
+ }
+
+ if (true_op != null){
+ if (false_op == null)
+ Report.Error (216, true_op.Location, "The operator `{0}' requires a matching operator `false' to also be defined",
+ true_op.GetSignatureForError ());
+ } else if (false_op != null)
+ Report.Error (216, false_op.Location, "The operator `{0}' requires a matching operator `true' to also be defined",
+ false_op.GetSignatureForError ());
+
+ //
+ // Look for the mistakes.
+ //
+ foreach (DictionaryEntry de in pairs){
+ OperatorEntry oe = (OperatorEntry) de.Key;
+
+ if (oe.flags == 3)
+ continue;
+
+ string s = "";
+ switch (oe.ot){
+ case Operator.OpType.Equality:
+ s = "!=";
+ break;
+ case Operator.OpType.Inequality:
+ s = "==";
+ break;
+ case Operator.OpType.GreaterThan:
+ s = "<";
+ break;
+ case Operator.OpType.LessThan:
+ s = ">";
+ break;
+ case Operator.OpType.GreaterThanOrEqual:
+ s = "<=";
+ break;
+ case Operator.OpType.LessThanOrEqual:
+ s = ">=";
+ break;
+ }
+ Report.Error (216, oe.op.Location,
+ "The operator `{0}' requires a matching operator `{1}' to also be defined",
+ oe.op.GetSignatureForError (), s);
+ }
+
+ if (has_equality_or_inequality && (RootContext.WarningLevel > 2)) {
+ if (container.Methods == null || !container.Methods.HasEquals)
+ Report.Warning (660, 2, container.Location, "`{0}' defines operator == or operator != but does not override Object.Equals(object o)", container.GetSignatureForError ());
+
+ if (container.Methods == null || !container.Methods.HasGetHashCode)
+ Report.Warning (661, 2, container.Location, "`{0}' defines operator == or operator != but does not override Object.GetHashCode()", container.GetSignatureForError ());
+ }
+ }
+
+ public override void DefineContainerMembers ()
+ {
+ base.DefineContainerMembers ();
+ CheckPairedOperators ();
+ }
+ }
+
+
+ // Whether this is a struct, class or interface
+ public readonly Kind Kind;
+
+ // Holds a list of classes and structures
+ protected ArrayList types;
+
+ // Holds the list of properties
+ MemberCoreArrayList properties;
+
+ // Holds the list of enumerations
+ MemberCoreArrayList enums;
+
+ // Holds the list of delegates
+ MemberCoreArrayList delegates;
+
+ // Holds the list of constructors
+ protected MemberCoreArrayList instance_constructors;
+
+ // Holds the list of fields
+ MemberCoreArrayList fields;
+
+ // Holds a list of fields that have initializers
+ protected ArrayList initialized_fields;
+
+ // Holds a list of static fields that have initializers
+ protected ArrayList initialized_static_fields;
+
+ // Holds the list of constants
+ MemberCoreArrayList constants;
+
+ // Holds the list of
+ MemberCoreArrayList interfaces;
+
+ // Holds the methods.
+ MethodArrayList methods;
+
+ // Holds the events
+ protected MemberCoreArrayList events;
+
+ // Holds the indexers
+ IndexerArrayList indexers;
+
+ // Holds the operators
+ MemberCoreArrayList operators;
+
+ // Holds the compiler generated classes
+ ArrayList compiler_generated;
+
+ //
+ // Pointers to the default constructor and the default static constructor
+ //
+ protected Constructor default_constructor;
+ protected Constructor default_static_constructor;
+
+ //
+ // Points to the first non-static field added to the container.
+ //
+ // This is an arbitrary choice. We are interested in looking at _some_ non-static field,
+ // and the first one's as good as any.
+ //
+ FieldBase first_nonstatic_field = null;
+
+ //
+ // This one is computed after we can distinguish interfaces
+ // from classes from the arraylist `type_bases'
+ //
+ TypeExpr base_type;
+ TypeExpr[] iface_exprs;
+ Type GenericType;
+
+ ArrayList type_bases;
+
+ bool members_resolved;
+ bool members_resolved_ok;
+ bool members_defined;
+ bool members_defined_ok;
+
+ // The interfaces we implement.
+ protected Type[] ifaces;
+
+ // The base member cache and our member cache
+ MemberCache base_cache;
+ MemberCache member_cache;
+
+ public const string DefaultIndexerName = "Item";
+
+#if GMCS_SOURCE
+ GenericTypeParameterBuilder[] gen_params;
+#endif
+
+ ArrayList partial_parts;
+
+ /// <remarks>
+ /// The pending methods that need to be implemented
+ // (interfaces or abstract methods)
+ /// </remarks>
+ PendingImplementation pending;
+
+ public TypeContainer (NamespaceEntry ns, DeclSpace parent, MemberName name,
+ Attributes attrs, Kind kind)
+ : base (ns, parent, name, attrs)
+ {
+ if (parent != null && parent.NamespaceEntry != ns)
+ throw new InternalErrorException ("A nested type should be in the same NamespaceEntry as its enclosing class");
+
+ this.Kind = kind;
+ this.PartialContainer = this;
+ }
+
+ public bool AddMember (MemberCore symbol)
+ {
+ return AddToContainer (symbol, symbol.MemberName.MethodName);
+ }
+
+ protected virtual bool AddMemberType (DeclSpace ds)
+ {
+ return AddToContainer (ds, ds.Basename);
+ }
+
+ public void AddConstant (Const constant)
+ {
+ if (!AddMember (constant))
+ return;
+
+ if (constants == null)
+ constants = new MemberCoreArrayList ();
+
+ constants.Add (constant);
+ }
+
+ public void AddEnum (Mono.CSharp.Enum e)
+ {
+ if (!AddMemberType (e))
+ return;
+
+ if (enums == null)
+ enums = new MemberCoreArrayList ();
+
+ enums.Add (e);
+ }
+
+ public TypeContainer AddTypeContainer (TypeContainer tc, bool is_interface)
+ {
+ if (!AddMemberType (tc))
+ return tc;
+
+ if (is_interface) {
+ if (interfaces == null)
+ interfaces = new MemberCoreArrayList ();
+ interfaces.Add (tc);
+ } else {
+ if (types == null)
+ types = new ArrayList (2);
+ types.Add (tc);
+ }
+ return tc;
+ }
+
+ public virtual TypeContainer AddPartial (TypeContainer nextPart, bool is_interface)
+ {
+ return AddPartial (nextPart, nextPart.Basename, is_interface);
+ }
+
+ protected TypeContainer AddPartial (TypeContainer nextPart, string name, bool is_interface)
+ {
+ nextPart.ModFlags |= Modifiers.PARTIAL;
+ TypeContainer tc = defined_names [name] as TypeContainer;
+
+ if (tc == null)
+ return AddTypeContainer (nextPart, is_interface);
+
+ if ((tc.ModFlags & Modifiers.PARTIAL) == 0) {
+ Report.SymbolRelatedToPreviousError (tc);
+ Error_MissingPartialModifier (nextPart);
+ return tc;
+ }
+
+ if (tc.Kind != nextPart.Kind) {
+ Report.SymbolRelatedToPreviousError (tc);
+ Report.Error (261, nextPart.Location,
+ "Partial declarations of `{0}' must be all classes, all structs or all interfaces",
+ nextPart.GetSignatureForError ());
+ return tc;
+ }
+
+ if ((tc.ModFlags & Modifiers.Accessibility) != (nextPart.ModFlags & Modifiers.Accessibility) &&
+ ((tc.ModFlags & Modifiers.DEFAULT_ACCESS_MODIFER) == 0 &&
+ (nextPart.ModFlags & Modifiers.DEFAULT_ACCESS_MODIFER) == 0)) {
+ Report.SymbolRelatedToPreviousError (tc);
+ Report.Error (262, nextPart.Location,
+ "Partial declarations of `{0}' have conflicting accessibility modifiers",
+ nextPart.GetSignatureForError ());
+ return tc;
+ }
+
+ if (tc.MemberName.IsGeneric) {
+ TypeParameter[] tc_names = tc.TypeParameters;
+ TypeParameterName[] part_names = nextPart.MemberName.TypeArguments.GetDeclarations ();
+
+ for (int i = 0; i < tc_names.Length; ++i) {
+ if (tc_names[i].Name == part_names[i].Name)
+ continue;
+
+ Report.SymbolRelatedToPreviousError (part_names[i].Location, "");
+ Report.Error (264, tc.Location, "Partial declarations of `{0}' must have the same type parameter names in the same order",
+ tc.GetSignatureForError ());
+ return tc;
+ }
+ }
+
+ if (tc.partial_parts == null)
+ tc.partial_parts = new ArrayList (1);
+
+ tc.ModFlags |= nextPart.ModFlags;
+ if (nextPart.attributes != null) {
+ if (tc.attributes == null)
+ tc.attributes = nextPart.attributes;
+ else
+ tc.attributes.AddAttributes (nextPart.attributes.Attrs);
+ }
+
+ nextPart.PartialContainer = tc;
+ tc.partial_parts.Add (nextPart);
+ return tc;
+ }
+
+ public void AddDelegate (Delegate d)
+ {
+ if (!AddMemberType (d))
+ return;
+
+ if (delegates == null)
+ delegates = new MemberCoreArrayList ();
+
+ delegates.Add (d);
+ }
+
+ public void AddMethod (Method method)
+ {
+ if (!AddMember (method))
+ return;
+
+ if (methods == null)
+ methods = new MethodArrayList (this);
+
+ if (method.MemberName.Left != null)
+ methods.Insert (0, method);
+ else
+ methods.Add (method);
+ }
+
+ //
+ // Do not use this method: use AddMethod.
+ //
+ // This is only used by iterators.
+ //
+ public void AppendMethod (Method method)
+ {
+ if (!AddMember (method))
+ return;
+
+ if (methods == null)
+ methods = new MethodArrayList (this);
+
+ methods.Add (method);
+ }
+
+ public void AddConstructor (Constructor c)
+ {
+ if (c.Name != MemberName.Name) {
+ Report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
+ }
+
+ bool is_static = (c.ModFlags & Modifiers.STATIC) != 0;
+
+ if (is_static){
+ if (default_static_constructor != null) {
+ Report.SymbolRelatedToPreviousError (default_static_constructor);
+ Report.Error (111, c.Location, Error111, c.GetSignatureForError ());
+ return;
+ }
+
+ default_static_constructor = c;
+ } else {
+ if (c.Parameters.Empty){
+ if (default_constructor != null) {
+ Report.SymbolRelatedToPreviousError (default_constructor);
+ Report.Error (111, c.Location, Error111, c.GetSignatureForError ());
+ return;
+ }
+ default_constructor = c;
+ }
+
+ if (instance_constructors == null)
+ instance_constructors = new MemberCoreArrayList ();
+
+ instance_constructors.Add (c);
+ }
+ }
+
+ internal static string Error111 {
+ get {
+ return "`{0}' is already defined. Rename this member or use different parameter types";
+ }
+ }
+
+ public void AddField (FieldMember field)
+ {
+ if (!AddMember (field))
+ return;
+
+ if (fields == null)
+ fields = new MemberCoreArrayList ();
+
+ fields.Add (field);
+
+ if ((field.ModFlags & Modifiers.STATIC) != 0)
+ return;
+
+ if (first_nonstatic_field == null) {
+ first_nonstatic_field = field;
+ return;
+ }
+
+ if (Kind == Kind.Struct &&
+ first_nonstatic_field.Parent != field.Parent &&
+ RootContext.WarningLevel >= 3) {
+ Report.SymbolRelatedToPreviousError (first_nonstatic_field.Parent);
+ Report.Warning (282, 3, field.Location,
+ "struct instance field `{0}' found in different declaration from instance field `{1}'",
+ field.GetSignatureForError (), first_nonstatic_field.GetSignatureForError ());
+ }
+ }
+
+ public void AddProperty (Property prop)
+ {
+ if (!AddMember (prop) ||
+ !AddMember (prop.Get) || !AddMember (prop.Set))
+ return;
+
+ if (properties == null)
+ properties = new MemberCoreArrayList ();
+
+ if (prop.MemberName.Left != null)
+ properties.Insert (0, prop);
+ else
+ properties.Add (prop);
+ }
+
+ public void AddEvent (Event e)
+ {
+ if (!AddMember (e))
+ return;
+
+ if (e is EventProperty) {
+ if (!AddMember (e.Add))
+ return;
+
+ if (!AddMember (e.Remove))
+ return;
+ }
+
+ if (events == null)
+ events = new MemberCoreArrayList ();
+
+ events.Add (e);
+ }
+
+ /// <summary>
+ /// Indexer has special handling in constrast to other AddXXX because the name can be driven by IndexerNameAttribute
+ /// </summary>
+ public void AddIndexer (Indexer i)
+ {
+ if (indexers == null)
+ indexers = new IndexerArrayList (this);
+
+ if (i.IsExplicitImpl)
+ indexers.Insert (0, i);
+ else
+ indexers.Add (i);
+ }
+
+ public void AddOperator (Operator op)
+ {
+ if (!AddMember (op))
+ return;
+
+ if (operators == null)
+ operators = new OperatorArrayList (this);
+
+ operators.Add (op);
+ }
+
+ public void AddCompilerGeneratedClass (CompilerGeneratedClass c)
+ {
+ Report.Debug (64, "ADD COMPILER GENERATED CLASS", this, c);
+
+ if (compiler_generated == null)
+ compiler_generated = new ArrayList ();
+
+ compiler_generated.Add (c);
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.default_member_type) {
+ if (Indexers != null) {
+ Report.Error (646, a.Location, "Cannot specify the `DefaultMember' attribute on type containing an indexer");
+ return;
+ }
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ throw new NotSupportedException ();
+ }
+ }
+
+ public ArrayList Types {
+ get {
+ return types;
+ }
+ }
+
+ public MethodArrayList Methods {
+ get {
+ return methods;
+ }
+ }
+
+ public ArrayList Constants {
+ get {
+ return constants;
+ }
+ }
+
+ public ArrayList Interfaces {
+ get {
+ return interfaces;
+ }
+ }
+
+ public ArrayList CompilerGenerated {
+ get {
+ return compiler_generated;
+ }
+ }
+
+ protected Type BaseType {
+ get {
+ return TypeBuilder.BaseType;
+ }
+ }
+
+ public ArrayList Bases {
+ get {
+ return type_bases;
+ }
+
+ set {
+ type_bases = value;
+ }
+ }
+
+ public ArrayList Fields {
+ get {
+ return fields;
+ }
+ }
+
+ public ArrayList InstanceConstructors {
+ get {
+ return instance_constructors;
+ }
+ }
+
+ public ArrayList Properties {
+ get {
+ return properties;
+ }
+ }
+
+ public ArrayList Events {
+ get {
+ return events;
+ }
+ }
+
+ public ArrayList Enums {
+ get {
+ return enums;
+ }
+ }
+
+ public ArrayList Indexers {
+ get {
+ return indexers;
+ }
+ }
+
+ public ArrayList Operators {
+ get {
+ return operators;
+ }
+ }
+
+ public ArrayList Delegates {
+ get {
+ return delegates;
+ }
+ }
+
+ protected override TypeAttributes TypeAttr {
+ get {
+ return Modifiers.TypeAttr (ModFlags, IsTopLevel) | base.TypeAttr;
+ }
+ }
+
+ public string IndexerName {
+ get {
+ return indexers == null ? DefaultIndexerName : indexers.IndexerName;
+ }
+ }
+
+ public bool IsComImport {
+ get {
+ if (OptAttributes == null)
+ return false;
+
+ return OptAttributes.Contains (TypeManager.comimport_attr_type);
+ }
+ }
+
+ public virtual void RegisterFieldForInitialization (FieldBase field)
+ {
+ if ((field.ModFlags & Modifiers.STATIC) != 0){
+ if (initialized_static_fields == null)
+ initialized_static_fields = new ArrayList (4);
+
+ initialized_static_fields.Add (field);
+ } else {
+ if (initialized_fields == null)
+ initialized_fields = new ArrayList (4);
+
+ initialized_fields.Add (field);
+ }
+ }
+
+ //
+ // Emits the instance field initializers
+ //
+ public bool EmitFieldInitializers (EmitContext ec)
+ {
+ ArrayList fields;
+
+ if (ec.IsStatic){
+ fields = initialized_static_fields;
+ } else {
+ fields = initialized_fields;
+ }
+
+ if (fields == null)
+ return true;
+
+ foreach (FieldBase f in fields) {
+ f.EmitInitializer (ec);
+ }
+ return true;
+ }
+
+ public override string DocComment {
+ get {
+ return comment;
+ }
+ set {
+ if (value == null)
+ return;
+
+ comment += value;
+ }
+ }
+
+ public PendingImplementation PendingImplementations {
+ get { return pending; }
+ }
+
+ public override bool GetClsCompliantAttributeValue ()
+ {
+ if (PartialContainer != this)
+ return PartialContainer.GetClsCompliantAttributeValue ();
+
+ return base.GetClsCompliantAttributeValue ();
+ }
+
+ public void AddBasesForPart (DeclSpace part, ArrayList bases)
+ {
+ // FIXME: get rid of partial_parts and store lists of bases of each part here
+ // assumed, not verified: 'part' is in 'partial_parts'
+ ((TypeContainer) part).Bases = bases;
+ }
+
+ TypeExpr[] GetNormalBases (out TypeExpr base_class)
+ {
+ base_class = null;
+ if (Bases == null)
+ return null;
+
+ int count = Bases.Count;
+ int start = 0, i, j;
+
+ if (Kind == Kind.Class){
+ TypeExpr name = ((Expression) Bases [0]).ResolveAsBaseTerminal (this, false);
+
+ if (name == null){
+ return null;
+ }
+
+ if (!name.IsInterface) {
+ // base_class could be a class, struct, enum, delegate.
+ // This is validated in GetClassBases.
+ base_class = name;
+ start = 1;
+ }
+ }
+
+ TypeExpr [] ifaces = new TypeExpr [count-start];
+
+ for (i = start, j = 0; i < count; i++, j++){
+ TypeExpr resolved = ((Expression) Bases [i]).ResolveAsBaseTerminal (this, false);
+ if (resolved == null) {
+ return null;
+ }
+
+ ifaces [j] = resolved;
+ }
+
+ return ifaces.Length == 0 ? null : ifaces;
+ }
+
+
+ TypeExpr[] GetNormalPartialBases (ref TypeExpr base_class)
+ {
+ ArrayList ifaces = new ArrayList (0);
+ if (iface_exprs != null)
+ ifaces.AddRange (iface_exprs);
+
+ foreach (TypeContainer part in partial_parts) {
+ TypeExpr new_base_class;
+ TypeExpr[] new_ifaces = part.GetClassBases (out new_base_class);
+ if (new_base_class != TypeManager.system_object_expr) {
+ if (base_class == TypeManager.system_object_expr)
+ base_class = new_base_class;
+ else {
+ if (new_base_class != null && !new_base_class.Equals (base_class)) {
+ Report.SymbolRelatedToPreviousError (base_class.Location, "");
+ Report.Error (263, part.Location,
+ "Partial declarations of `{0}' must not specify different base classes",
+ part.GetSignatureForError ());
+
+ return null;
+ }
+ }
+ }
+
+ if (new_ifaces == null)
+ continue;
+
+ foreach (TypeExpr iface in new_ifaces) {
+ if (ifaces.Contains (iface))
+ continue;
+
+ ifaces.Add (iface);
+ }
+ }
+
+ if (ifaces.Count == 0)
+ return null;
+
+ return (TypeExpr[])ifaces.ToArray (typeof (TypeExpr));
+ }
+
+ /// <summary>
+ /// This function computes the Base class and also the
+ /// list of interfaces that the class or struct @c implements.
+ ///
+ /// The return value is an array (might be null) of
+ /// interfaces implemented (as Types).
+ ///
+ /// The @base_class argument is set to the base object or null
+ /// if this is `System.Object'.
+ /// </summary>
+ public virtual TypeExpr [] GetClassBases (out TypeExpr base_class)
+ {
+ TypeExpr[] ifaces = GetNormalBases (out base_class);
+
+ if (ifaces == null)
+ return null;
+
+ int count = ifaces.Length;
+
+ for (int i = 0; i < count; i++) {
+ TypeExpr iface = (TypeExpr) ifaces [i];
+
+ if (!iface.IsInterface) {
+ if (Kind != Kind.Class) {
+ // TODO: location of symbol related ....
+ Error_TypeInListIsNotInterface (Location, iface.FullName);
+ }
+ else if (base_class != null)
+ Report.Error (1721, Location, "`{0}': Classes cannot have multiple base classes (`{1}' and `{2}')",
+ GetSignatureForError (), base_class.GetSignatureForError (), iface.GetSignatureForError ());
+ else {
+ Report.Error (1722, Location, "`{0}': Base class `{1}' must be specified as first",
+ GetSignatureForError (), iface.GetSignatureForError ());
+ }
+ return null;
+ }
+
+ for (int x = 0; x < i; x++) {
+ if (iface.Equals (ifaces [x])) {
+ Report.Error (528, Location,
+ "`{0}' is already listed in " +
+ "interface list", iface.GetSignatureForError ());
+ return null;
+ }
+ }
+
+ if ((Kind == Kind.Interface) &&
+ !iface.AsAccessible (Parent, ModFlags)) {
+ Report.Error (61, Location,
+ "Inconsistent accessibility: base " +
+ "interface `{0}' is less accessible " +
+ "than interface `{1}'", iface.Name,
+ Name);
+ return null;
+ }
+ }
+ return ifaces;
+ }
+
+ bool CheckGenericInterfaces (Type[] ifaces)
+ {
+#if GMCS_SOURCE
+ ArrayList already_checked = new ArrayList ();
+
+ for (int i = 0; i < ifaces.Length; i++) {
+ Type iface = ifaces [i];
+ foreach (Type t in already_checked) {
+ if (iface == t)
+ continue;
+
+ Type[] infered = new Type [CountTypeParameters];
+ if (!TypeManager.MayBecomeEqualGenericInstances (iface, t, infered, null))
+ continue;
+
+ Report.Error (695, Location,
+ "`{0}' cannot implement both `{1}' and `{2}' " +
+ "because they may unify for some type parameter substitutions",
+ TypeManager.CSharpName (TypeBuilder), TypeManager.CSharpName (iface),
+ TypeManager.CSharpName (t));
+ return false;
+ }
+
+ already_checked.Add (iface);
+ }
+#endif
+
+ return true;
+ }
+
+ bool error = false;
+
+ protected void Error_TypeInListIsNotInterface (Location loc, string type)
+ {
+ Report.Error (527, loc, "Type `{0}' in interface list is not an interface", type);
+ }
+
+ bool DefineTypeBuilder ()
+ {
+ try {
+ if (IsTopLevel){
+ if (TypeManager.NamespaceClash (Name, Location)) {
+ return false;
+ }
+
+ ModuleBuilder builder = CodeGen.Module.Builder;
+ Type default_parent = null;
+ if (Kind == Kind.Struct)
+ default_parent = TypeManager.value_type;
+ TypeBuilder = builder.DefineType (
+ Name, TypeAttr, default_parent, null);
+ } else {
+ TypeBuilder builder = Parent.TypeBuilder;
+
+ TypeBuilder = builder.DefineNestedType (
+ Basename, TypeAttr, null, null);
+ }
+ } catch (ArgumentException) {
+ Report.RuntimeMissingSupport (Location, "static classes");
+ return false;
+ }
+
+ TypeManager.AddUserType (this);
+
+#if GMCS_SOURCE
+ if (IsGeneric) {
+ string[] param_names = new string [TypeParameters.Length];
+ for (int i = 0; i < TypeParameters.Length; i++)
+ param_names [i] = TypeParameters [i].Name;
+
+ gen_params = TypeBuilder.DefineGenericParameters (param_names);
+
+ int offset = CountTypeParameters - CurrentTypeParameters.Length;
+ for (int i = offset; i < gen_params.Length; i++)
+ CurrentTypeParameters [i - offset].Define (gen_params [i]);
+ }
+#endif
+
+ iface_exprs = GetClassBases (out base_type);
+ if (partial_parts != null) {
+ iface_exprs = GetNormalPartialBases (ref base_type);
+ }
+
+ //
+ // GetClassBases calls ResolveBaseTypeExpr() on the various type expressions involved,
+ // which in turn should have called DefineType()s on base types if necessary.
+ //
+ // None of the code below should trigger DefineType()s on classes that we depend on.
+ // Thus, we are eligible to be on the topological sort `type_container_resolve_order'.
+ //
+ // Let's do it as soon as possible, since code below can call DefineType() on classes
+ // that depend on us to be populated before they are.
+ //
+ if (!(this is CompilerGeneratedClass))
+ RootContext.RegisterOrder (this);
+
+ if (IsGeneric && base_type != null && TypeManager.IsAttributeType (base_type.Type)) {
+ Report.Error (698, base_type.Location,
+ "A generic type cannot derive from `{0}' because it is an attribute class",
+ base_type.Name);
+ return false;
+ }
+
+ if (!CheckRecursiveDefinition (this))
+ return false;
+
+ if (base_type != null) {
+ TypeBuilder.SetParent (base_type.Type);
+
+ ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (base_type.Type);
+ if (obsolete_attr != null && !IsInObsoleteScope)
+ AttributeTester.Report_ObsoleteMessage (obsolete_attr, base_type.GetSignatureForError (), Location);
+ }
+
+ // add interfaces that were not added at type creation
+ if (iface_exprs != null) {
+ ifaces = TypeManager.ExpandInterfaces (iface_exprs);
+ if (ifaces == null)
+ return false;
+
+ foreach (Type itype in ifaces)
+ TypeBuilder.AddInterfaceImplementation (itype);
+
+ foreach (TypeExpr ie in iface_exprs) {
+ ObsoleteAttribute oa = AttributeTester.GetObsoleteAttribute (ie.Type);
+ if ((oa != null) && !IsInObsoleteScope)
+ AttributeTester.Report_ObsoleteMessage (
+ oa, ie.GetSignatureForError (), Location);
+ }
+
+ if (!CheckGenericInterfaces (ifaces))
+ return false;
+
+ TypeManager.RegisterBuilder (TypeBuilder, ifaces);
+ }
+
+ return true;
+ }
+
+ //
+ // Defines the type in the appropriate ModuleBuilder or TypeBuilder.
+ //
+ public override TypeBuilder DefineType ()
+ {
+ if (TypeBuilder != null)
+ return TypeBuilder;
+
+ if (error)
+ return null;
+
+ if (!DefineTypeBuilder ()) {
+ error = true;
+ return null;
+ }
+
+ if (partial_parts != null) {
+ foreach (TypeContainer part in partial_parts)
+ part.TypeBuilder = TypeBuilder;
+ }
+
+ if (!(this is CompilerGeneratedClass)) {
+ if (!ResolveMembers ()) {
+ error = true;
+ return null;
+ }
+ }
+
+ if (!DefineNestedTypes ()) {
+ error = true;
+ return null;
+ }
+
+ return TypeBuilder;
+ }
+
+ public bool ResolveMembers ()
+ {
+ if (members_resolved)
+ return members_resolved_ok;
+
+ members_resolved_ok = DoResolveMembers ();
+ members_resolved = true;
+
+ return members_resolved_ok;
+ }
+
+ protected virtual bool DoResolveMembers ()
+ {
+ if (methods != null) {
+ foreach (Method method in methods) {
+ if (!method.ResolveMembers ())
+ return false;
+ }
+ }
+
+ if (instance_constructors != null) {
+ foreach (Constructor c in instance_constructors) {
+ if (!c.ResolveMembers ())
+ return false;
+ }
+ }
+
+ if (default_static_constructor != null) {
+ if (!default_static_constructor.ResolveMembers ())
+ return false;
+ }
+
+ if (operators != null) {
+ foreach (Operator o in operators) {
+ if (!o.ResolveMembers ())
+ return false;
+ }
+ }
+
+ if (properties != null) {
+ foreach (PropertyBase p in properties) {
+ if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
+ return false;
+ if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
+ return false;
+ }
+ }
+
+ if (indexers != null) {
+ foreach (PropertyBase p in indexers) {
+ if (!p.Get.IsDummy && !p.Get.ResolveMembers ())
+ return false;
+ if (!p.Set.IsDummy && !p.Set.ResolveMembers ())
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ Constraints [] constraints;
+ public override void SetParameterInfo (ArrayList constraints_list)
+ {
+ if (PartialContainer == this) {
+ base.SetParameterInfo (constraints_list);
+ return;
+ }
+
+ if (constraints_list == null)
+ return;
+
+ constraints = new Constraints [PartialContainer.CountCurrentTypeParameters];
+
+ TypeParameter[] current_params = PartialContainer.CurrentTypeParameters;
+ for (int i = 0; i < constraints.Length; i++) {
+ foreach (Constraints constraint in constraints_list) {
+ if (constraint.TypeParameter == current_params [i].Name) {
+ constraints [i] = constraint;
+ break;
+ }
+ }
+ }
+ }
+
+ bool UpdateTypeParameterConstraints ()
+ {
+ if (constraints == null)
+ return true;
+
+ TypeParameter[] current_params = PartialContainer.CurrentTypeParameters;
+ for (int i = 0; i < current_params.Length; i++) {
+ if (!current_params [i].UpdateConstraints (this, constraints [i])) {
+ Report.SymbolRelatedToPreviousError (Location, "");
+ Report.Error (265, PartialContainer.Location,
+ "Partial declarations of `{0}' have inconsistent constraints for type parameter `{1}'",
+ PartialContainer.GetSignatureForError (), current_params [i].Name);
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public bool ResolveType ()
+ {
+ if (!DoResolveType ())
+ return false;
+
+ if (compiler_generated != null) {
+ foreach (CompilerGeneratedClass c in compiler_generated)
+ if (!c.ResolveType ())
+ return false;
+ }
+
+ return true;
+ }
+
+ public bool ResolveCurrentType ()
+ {
+ return DoResolveType ();
+ }
+
+ protected virtual bool DoResolveType ()
+ {
+ if ((base_type != null) &&
+ (base_type.ResolveAsTypeTerminal (this, false) == null)) {
+ error = true;
+ return false;
+ }
+
+ if (!IsGeneric)
+ return true;
+
+ if (PartialContainer != this)
+ throw new InternalErrorException ();
+
+ TypeExpr current_type = null;
+
+ foreach (TypeParameter type_param in CurrentTypeParameters) {
+ if (!type_param.Resolve (this)) {
+ error = true;
+ return false;
+ }
+ }
+
+ if (partial_parts != null) {
+ foreach (TypeContainer part in partial_parts) {
+ if (!part.UpdateTypeParameterConstraints ()) {
+ error = true;
+ return false;
+ }
+ }
+ }
+
+ foreach (TypeParameter type_param in TypeParameters) {
+ if (!type_param.DefineType (this)) {
+ error = true;
+ return false;
+ }
+ }
+
+ Report.Debug (128, "CLASS RESOLVE TYPE", this, Name, TypeBuilder,
+ TypeParameters, Location);
+
+ current_type = new ConstructedType (TypeBuilder, TypeParameters, Location);
+
+ foreach (TypeParameter type_param in TypeParameters)
+ if (!type_param.CheckDependencies ()) {
+ error = true;
+ return false;
+ }
+
+ if (current_type != null) {
+ current_type = current_type.ResolveAsTypeTerminal (this, false);
+ if (current_type == null) {
+ error = true;
+ return false;
+ }
+
+ CurrentType = current_type.Type;
+ }
+
+ return true;
+ }
+
+ protected virtual bool DefineNestedTypes ()
+ {
+ if (Interfaces != null) {
+ foreach (TypeContainer iface in Interfaces)
+ if (iface.DefineType () == null)
+ return false;
+ }
+
+ if (Types != null) {
+ foreach (TypeContainer tc in Types)
+ if (tc.DefineType () == null)
+ return false;
+ }
+
+ if (Delegates != null) {
+ foreach (Delegate d in Delegates)
+ if (d.DefineType () == null)
+ return false;
+ }
+
+ if (Enums != null) {
+ foreach (Enum en in Enums)
+ if (en.DefineType () == null)
+ return false;
+ }
+
+ if (compiler_generated != null) {
+ foreach (CompilerGeneratedClass c in compiler_generated) {
+ if (c.DefineType () == null)
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ TypeContainer InTransit;
+
+ protected bool CheckRecursiveDefinition (TypeContainer tc)
+ {
+ if (InTransit != null) {
+ Report.SymbolRelatedToPreviousError (this);
+ if (this is Interface)
+ Report.Error (
+ 529, tc.Location, "Inherited interface `{0}' causes a " +
+ "cycle in the interface hierarchy of `{1}'",
+ GetSignatureForError (), tc.GetSignatureForError ());
+ else
+ Report.Error (
+ 146, tc.Location, "Circular base class dependency " +
+ "involving `{0}' and `{1}'",
+ tc.GetSignatureForError (), GetSignatureForError ());
+ return false;
+ }
+
+ InTransit = tc;
+
+ if (base_type != null) {
+ Type t = TypeManager.DropGenericTypeArguments (base_type.Type);
+ TypeContainer ptc = TypeManager.LookupTypeContainer (t);
+ if ((ptc != null) && !ptc.CheckRecursiveDefinition (this))
+ return false;
+ }
+
+ if (iface_exprs != null) {
+ foreach (TypeExpr iface in iface_exprs) {
+ Type itype = TypeManager.DropGenericTypeArguments (iface.Type);
+ TypeContainer ptc = TypeManager.LookupTypeContainer (itype);
+ if ((ptc != null) && !ptc.CheckRecursiveDefinition (this))
+ return false;
+ }
+ }
+
+ if (!IsTopLevel && !Parent.PartialContainer.CheckRecursiveDefinition (this))
+ return false;
+
+ InTransit = null;
+ return true;
+ }
+
+ public static void Error_KeywordNotAllowed (Location loc)
+ {
+ Report.Error (1530, loc, "Keyword `new' is not allowed on namespace elements");
+ }
+
+ /// <summary>
+ /// Populates our TypeBuilder with fields and methods
+ /// </summary>
+ public override bool DefineMembers ()
+ {
+ if (members_defined)
+ return members_defined_ok;
+
+ if (!base.DefineMembers ())
+ return false;
+
+ members_defined_ok = DoDefineMembers ();
+ members_defined = true;
+
+ return members_defined_ok;
+ }
+
+ protected virtual bool DoDefineMembers ()
+ {
+ if (iface_exprs != null) {
+ foreach (TypeExpr iface in iface_exprs) {
+ ConstructedType ct = iface as ConstructedType;
+ if ((ct != null) && !ct.CheckConstraints (this))
+ return false;
+ }
+ }
+
+ if (base_type != null) {
+ ConstructedType ct = base_type as ConstructedType;
+ if ((ct != null) && !ct.CheckConstraints (this))
+ return false;
+ }
+
+ if (!IsTopLevel) {
+ MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Basename, false);
+ if (conflict_symbol == null) {
+ if ((RootContext.WarningLevel >= 4) && ((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 ());
+ } else {
+ if ((ModFlags & Modifiers.NEW) == 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));
+ }
+ }
+ }
+
+ DefineContainerMembers (constants);
+ DefineContainerMembers (fields);
+
+ if (Kind == Kind.Struct || Kind == Kind.Class) {
+ pending = PendingImplementation.GetPendingImplementations (this);
+ }
+
+ //
+ // Constructors are not in the defined_names array
+ //
+ DefineContainerMembers (instance_constructors);
+
+ DefineContainerMembers (properties);
+ DefineContainerMembers (events);
+ DefineContainerMembers (indexers);
+ DefineContainerMembers (methods);
+ DefineContainerMembers (operators);
+ DefineContainerMembers (enums);
+ DefineContainerMembers (delegates);
+
+ if (CurrentType != null) {
+ GenericType = CurrentType;
+ }
+
+
+#if CACHE
+ member_cache = new MemberCache (this);
+ if (partial_parts != null) {
+ foreach (TypeContainer part in partial_parts)
+ part.member_cache = member_cache;
+ }
+#endif
+
+ return true;
+ }
+
+ protected virtual void DefineContainerMembers (MemberCoreArrayList mcal)
+ {
+ if (mcal != null)
+ mcal.DefineContainerMembers ();
+ }
+
+ public override bool Define ()
+ {
+ if (compiler_generated != null) {
+ foreach (CompilerGeneratedClass c in compiler_generated) {
+ if (!c.Define ())
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public MemberInfo FindBaseMemberWithSameName (string name, bool ignore_methods)
+ {
+ return BaseCache == null ? null : BaseCache.FindMemberWithSameName (name, ignore_methods, null);
+ }
+
+ /// <summary>
+ /// This function is based by a delegate to the FindMembers routine
+ /// </summary>
+ static bool AlwaysAccept (MemberInfo m, object filterCriteria)
+ {
+ return true;
+ }
+
+ /// <summary>
+ /// This filter is used by FindMembers, and we just keep
+ /// a global for the filter to `AlwaysAccept'
+ /// </summary>
+ static MemberFilter accepting_filter;
+
+
+ static TypeContainer ()
+ {
+ accepting_filter = new MemberFilter (AlwaysAccept);
+ }
+
+ public MethodInfo[] GetMethods ()
+ {
+ ArrayList members = new ArrayList ();
+
+ DefineMembers ();
+
+ if (methods != null) {
+ int len = methods.Count;
+ for (int i = 0; i < len; i++) {
+ Method m = (Method) methods [i];
+
+ members.Add (m.MethodBuilder);
+ }
+ }
+
+ if (operators != null) {
+ int len = operators.Count;
+ for (int i = 0; i < len; i++) {
+ Operator o = (Operator) operators [i];
+
+ members.Add (o.MethodBuilder);
+ }
+ }
+
+ if (properties != null) {
+ int len = properties.Count;
+ for (int i = 0; i < len; i++) {
+ Property p = (Property) properties [i];
+
+ if (p.GetBuilder != null)
+ members.Add (p.GetBuilder);
+ if (p.SetBuilder != null)
+ members.Add (p.SetBuilder);
+ }
+ }
+
+ if (indexers != null) {
+ int len = indexers.Count;
+ for (int i = 0; i < len; i++) {
+ Indexer ix = (Indexer) indexers [i];
+
+ if (ix.GetBuilder != null)
+ members.Add (ix.GetBuilder);
+ if (ix.SetBuilder != null)
+ members.Add (ix.SetBuilder);
+ }
+ }
+
+ if (events != null) {
+ int len = events.Count;
+ for (int i = 0; i < len; i++) {
+ Event e = (Event) events [i];
+
+ if (e.AddBuilder != null)
+ members.Add (e.AddBuilder);
+ if (e.RemoveBuilder != null)
+ members.Add (e.RemoveBuilder);
+ }
+ }
+
+ MethodInfo[] retMethods = new MethodInfo [members.Count];
+ members.CopyTo (retMethods, 0);
+ return retMethods;
+ }
+
+ // Indicated whether container has StructLayout attribute set Explicit
+ public bool HasExplicitLayout {
+ get { return (caching_flags & Flags.HasExplicitLayout) != 0; }
+ set { caching_flags |= Flags.HasExplicitLayout; }
+ }
+
+ //
+ // Return the nested type with name @name. Ensures that the nested type
+ // is defined if necessary. Do _not_ use this when you have a MemberCache handy.
+ //
+ public Type FindNestedType (string name)
+ {
+ if (PartialContainer != this)
+ throw new InternalErrorException ("should not happen");
+
+ ArrayList [] lists = { types, enums, delegates, interfaces };
+
+ for (int j = 0; j < lists.Length; ++j) {
+ ArrayList list = lists [j];
+ if (list == null)
+ continue;
+
+ int len = list.Count;
+ for (int i = 0; i < len; ++i) {
+ DeclSpace ds = (DeclSpace) list [i];
+ if (ds.Basename == name) {
+ return ds.DefineType ();
+ }
+ }
+ }
+
+ return null;
+ }
+
+ private void FindMembers_NestedTypes (int modflags,
+ BindingFlags bf, MemberFilter filter, object criteria,
+ ref ArrayList members)
+ {
+ ArrayList [] lists = { types, enums, delegates, interfaces };
+
+ for (int j = 0; j < lists.Length; ++j) {
+ ArrayList list = lists [j];
+ if (list == null)
+ continue;
+
+ int len = list.Count;
+ for (int i = 0; i < len; i++) {
+ DeclSpace ds = (DeclSpace) list [i];
+
+ if ((ds.ModFlags & modflags) == 0)
+ continue;
+
+ TypeBuilder tb = ds.TypeBuilder;
+ if (tb == null) {
+ if (!(criteria is string) || ds.Basename.Equals (criteria))
+ tb = ds.DefineType ();
+ }
+
+ if (tb != null && (filter (tb, criteria) == true)) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (tb);
+ }
+ }
+ }
+ }
+
+ /// <summary>
+ /// This method returns the members of this type just like Type.FindMembers would
+ /// Only, we need to use this for types which are _being_ defined because MS'
+ /// implementation can't take care of that.
+ /// </summary>
+ //
+ // FIXME: return an empty static array instead of null, that cleans up
+ // some code and is consistent with some coding conventions I just found
+ // out existed ;-)
+ //
+ //
+ // Notice that in various cases we check if our field is non-null,
+ // something that would normally mean that there was a bug elsewhere.
+ //
+ // The problem happens while we are defining p-invoke methods, as those
+ // will trigger a FindMembers, but this happens before things are defined
+ //
+ // Since the whole process is a no-op, it is fine to check for null here.
+ //
+ public override MemberList FindMembers (MemberTypes mt, BindingFlags bf,
+ MemberFilter filter, object criteria)
+ {
+ ArrayList members = null;
+
+ int modflags = 0;
+ if ((bf & BindingFlags.Public) != 0)
+ modflags |= Modifiers.PUBLIC | Modifiers.PROTECTED |
+ Modifiers.INTERNAL;
+ if ((bf & BindingFlags.NonPublic) != 0)
+ modflags |= Modifiers.PRIVATE;
+
+ int static_mask = 0, static_flags = 0;
+ switch (bf & (BindingFlags.Static | BindingFlags.Instance)) {
+ case BindingFlags.Static:
+ static_mask = static_flags = Modifiers.STATIC;
+ break;
+
+ case BindingFlags.Instance:
+ static_mask = Modifiers.STATIC;
+ static_flags = 0;
+ break;
+
+ default:
+ static_mask = static_flags = 0;
+ break;
+ }
+
+ Timer.StartTimer (TimerType.TcFindMembers);
+
+ if (filter == null)
+ filter = accepting_filter;
+
+ if ((mt & MemberTypes.Field) != 0) {
+ if (fields != null) {
+ int len = fields.Count;
+ for (int i = 0; i < len; i++) {
+ FieldMember f = (FieldMember) fields [i];
+
+ if ((f.ModFlags & modflags) == 0)
+ continue;
+ if ((f.ModFlags & static_mask) != static_flags)
+ continue;
+
+ FieldBuilder fb = f.FieldBuilder;
+ if (fb != null && filter (fb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (fb);
+ }
+ }
+ }
+
+ if (constants != null) {
+ int len = constants.Count;
+ for (int i = 0; i < len; i++) {
+ Const con = (Const) constants [i];
+
+ if ((con.ModFlags & modflags) == 0)
+ continue;
+ if ((con.ModFlags & static_mask) != static_flags)
+ continue;
+
+ FieldBuilder fb = con.FieldBuilder;
+ if (fb == null) {
+ if (con.Define ())
+ fb = con.FieldBuilder;
+ }
+ if (fb != null && filter (fb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (fb);
+ }
+ }
+ }
+ }
+
+ if ((mt & MemberTypes.Method) != 0) {
+ if (methods != null) {
+ int len = methods.Count;
+ for (int i = 0; i < len; i++) {
+ Method m = (Method) methods [i];
+
+ if ((m.ModFlags & modflags) == 0)
+ continue;
+ if ((m.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MethodBuilder mb = m.MethodBuilder;
+
+ if (mb != null && filter (mb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (mb);
+ }
+ }
+ }
+
+ if (operators != null) {
+ int len = operators.Count;
+ for (int i = 0; i < len; i++) {
+ Operator o = (Operator) operators [i];
+
+ if ((o.ModFlags & modflags) == 0)
+ continue;
+ if ((o.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MethodBuilder ob = o.MethodBuilder;
+ if (ob != null && filter (ob, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (ob);
+ }
+ }
+ }
+
+ if (events != null) {
+ foreach (Event e in events) {
+ if ((e.ModFlags & modflags) == 0)
+ continue;
+ if ((e.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MethodBuilder b = e.AddBuilder;
+ if (b != null && filter (b, criteria)) {
+ if (members == null)
+ members = new ArrayList (4);
+
+ members.Add (b);
+ }
+
+ b = e.RemoveBuilder;
+ if (b != null && filter (b, criteria)) {
+ if (members == null)
+ members = new ArrayList (4);
+
+ members.Add (b);
+ }
+ }
+ }
+
+ if (properties != null) {
+ int len = properties.Count;
+ for (int i = 0; i < len; i++) {
+ Property p = (Property) properties [i];
+
+ if ((p.ModFlags & modflags) == 0)
+ continue;
+ if ((p.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MethodBuilder b;
+
+ b = p.GetBuilder;
+ if (b != null && filter (b, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (b);
+ }
+
+ b = p.SetBuilder;
+ if (b != null && filter (b, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (b);
+ }
+ }
+ }
+
+ if (indexers != null) {
+ int len = indexers.Count;
+ for (int i = 0; i < len; i++) {
+ Indexer ix = (Indexer) indexers [i];
+
+ if ((ix.ModFlags & modflags) == 0)
+ continue;
+ if ((ix.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MethodBuilder b;
+
+ b = ix.GetBuilder;
+ if (b != null && filter (b, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (b);
+ }
+
+ b = ix.SetBuilder;
+ if (b != null && filter (b, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (b);
+ }
+ }
+ }
+ }
+
+ if ((mt & MemberTypes.Event) != 0) {
+ if (events != null) {
+ int len = events.Count;
+ for (int i = 0; i < len; i++) {
+ Event e = (Event) events [i];
+
+ if ((e.ModFlags & modflags) == 0)
+ continue;
+ if ((e.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MemberInfo eb = e.EventBuilder;
+ if (eb != null && filter (eb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (e.EventBuilder);
+ }
+ }
+ }
+ }
+
+ if ((mt & MemberTypes.Property) != 0){
+ if (properties != null) {
+ int len = properties.Count;
+ for (int i = 0; i < len; i++) {
+ Property p = (Property) properties [i];
+
+ if ((p.ModFlags & modflags) == 0)
+ continue;
+ if ((p.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MemberInfo pb = p.PropertyBuilder;
+ if (pb != null && filter (pb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (p.PropertyBuilder);
+ }
+ }
+ }
+
+ if (indexers != null) {
+ int len = indexers.Count;
+ for (int i = 0; i < len; i++) {
+ Indexer ix = (Indexer) indexers [i];
+
+ if ((ix.ModFlags & modflags) == 0)
+ continue;
+ if ((ix.ModFlags & static_mask) != static_flags)
+ continue;
+
+ MemberInfo ib = ix.PropertyBuilder;
+ if (ib != null && filter (ib, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (ix.PropertyBuilder);
+ }
+ }
+ }
+ }
+
+ if ((mt & MemberTypes.NestedType) != 0)
+ FindMembers_NestedTypes (modflags, bf, filter, criteria, ref members);
+
+ if ((mt & MemberTypes.Constructor) != 0){
+ if (((bf & BindingFlags.Instance) != 0) && (instance_constructors != null)){
+ int len = instance_constructors.Count;
+ for (int i = 0; i < len; i++) {
+ Constructor c = (Constructor) instance_constructors [i];
+
+ ConstructorBuilder cb = c.ConstructorBuilder;
+ if (cb != null && filter (cb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (cb);
+ }
+ }
+ }
+
+ if (((bf & BindingFlags.Static) != 0) && (default_static_constructor != null)){
+ ConstructorBuilder cb =
+ default_static_constructor.ConstructorBuilder;
+
+ if (cb != null && filter (cb, criteria) == true) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.Add (cb);
+ }
+ }
+ }
+
+ //
+ // Lookup members in base if requested.
+ //
+ if ((bf & BindingFlags.DeclaredOnly) == 0) {
+ if (TypeBuilder.BaseType != null) {
+ MemberList list = FindMembers (TypeBuilder.BaseType, mt, bf, filter, criteria);
+ if (list.Count > 0) {
+ if (members == null)
+ members = new ArrayList ();
+
+ members.AddRange (list);
+ }
+ }
+ }
+
+ Timer.StopTimer (TimerType.TcFindMembers);
+
+ if (members == null)
+ return MemberList.Empty;
+ else
+ return new MemberList (members);
+ }
+
+ public override MemberCache MemberCache {
+ get {
+ return member_cache;
+ }
+ }
+
+ public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
+ MemberFilter filter, object criteria)
+ {
+ DeclSpace ds = TypeManager.LookupDeclSpace (t);
+
+ if (ds != null)
+ return ds.FindMembers (mt, bf, filter, criteria);
+ else
+ return new MemberList (t.FindMembers (mt, bf, filter, criteria));
+ }
+
+ /// <summary>
+ /// Emits the values for the constants
+ /// </summary>
+ public void EmitConstants ()
+ {
+ if (constants != null)
+ foreach (Const con in constants)
+ con.Emit ();
+ return;
+ }
+
+ static void CheckMemberUsage (MemberCoreArrayList al, string member_type)
+ {
+ if (al == null)
+ return;
+
+ foreach (MemberCore mc in al) {
+ if ((mc.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
+ continue;
+
+ if (!mc.IsUsed) {
+ Report.Warning (169, 3, mc.Location, "The private {0} `{1}' is never used", member_type, mc.GetSignatureForError ());
+ }
+ }
+ }
+
+ public virtual void VerifyMembers ()
+ {
+ //
+ // Check for internal or private fields that were never assigned
+ //
+ if (RootContext.WarningLevel >= 3) {
+ CheckMemberUsage (properties, "property");
+ CheckMemberUsage (methods, "method");
+ CheckMemberUsage (constants, "constant");
+
+ if (fields != null){
+ foreach (FieldMember f in fields) {
+ if ((f.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
+ continue;
+
+ if (!f.IsUsed){
+ if ((f.caching_flags & Flags.IsAssigned) == 0)
+ Report.Warning (169, 3, f.Location, "The private field `{0}' is never used", f.GetSignatureForError ());
+ else {
+#if NET_2_0
+ const int error_code = 414;
+#else
+ const int error_code = 169;
+#endif
+ Report.Warning (error_code, 3, f.Location, "The private field `{0}' is assigned but its value is never used",
+ f.GetSignatureForError ());
+ }
+ continue;
+ }
+
+ //
+ // Only report 649 on level 4
+ //
+ if (RootContext.WarningLevel < 4)
+ continue;
+
+ if ((f.caching_flags & Flags.IsAssigned) != 0)
+ continue;
+
+ Report.Warning (649, 4, f.Location, "Field `{0}' is never assigned to, and will always have its default value `{1}'",
+ f.GetSignatureForError (), f.Type.Type.IsValueType ? Activator.CreateInstance (f.Type.Type).ToString() : "null");
+ }
+ }
+ }
+ }
+
+ // TODO: move to ClassOrStruct
+ void EmitConstructors ()
+ {
+ if (instance_constructors == null)
+ return;
+
+ if (TypeBuilder.IsSubclassOf (TypeManager.attribute_type) && RootContext.VerifyClsCompliance && IsClsComplianceRequired ()) {
+ bool has_compliant_args = false;
+
+ foreach (Constructor c in instance_constructors) {
+ c.Emit ();
+
+ if (has_compliant_args)
+ continue;
+
+ has_compliant_args = c.HasCompliantArgs;
+ }
+ if (!has_compliant_args)
+ Report.Error (3015, Location, "`{0}' has no accessible constructors which use only CLS-compliant types", GetSignatureForError ());
+ } else {
+ foreach (Constructor c in instance_constructors)
+ c.Emit ();
+ }
+ }
+
+ /// <summary>
+ /// Emits the code, this step is performed after all
+ /// the types, enumerations, constructors
+ /// </summary>
+ public virtual void EmitType ()
+ {
+ if (OptAttributes != null)
+ OptAttributes.Emit ();
+
+#if GMCS_SOURCE
+ if (IsGeneric) {
+ int offset = CountTypeParameters - CurrentTypeParameters.Length;
+ for (int i = offset; i < gen_params.Length; i++)
+ CurrentTypeParameters [i - offset].EmitAttributes ();
+ }
+#endif
+
+ //
+ // Structs with no fields need to have at least one byte.
+ // The right thing would be to set the PackingSize in a DefineType
+ // but there are no functions that allow interfaces *and* the size to
+ // be specified.
+ //
+
+ if (Kind == Kind.Struct && first_nonstatic_field == null){
+ FieldBuilder fb = TypeBuilder.DefineField ("$PRIVATE$", TypeManager.byte_type,
+ FieldAttributes.Private);
+
+ if (HasExplicitLayout){
+ object [] ctor_args = new object [1];
+ ctor_args [0] = 0;
+
+ CustomAttributeBuilder cba = new CustomAttributeBuilder (
+ TypeManager.field_offset_attribute_ctor, ctor_args);
+ fb.SetCustomAttribute (cba);
+ }
+ }
+
+ Emit ();
+
+ EmitConstructors ();
+
+ // Can not continue if constants are broken
+ EmitConstants ();
+ if (Report.Errors > 0)
+ return;
+
+ if (default_static_constructor != null)
+ default_static_constructor.Emit ();
+
+ if (methods != null){
+ foreach (Method m in methods)
+ m.Emit ();
+ }
+
+ if (operators != null)
+ foreach (Operator o in operators)
+ o.Emit ();
+
+ if (properties != null)
+ foreach (Property p in properties)
+ p.Emit ();
+
+ if (indexers != null){
+ indexers.Emit ();
+ }
+
+ if (fields != null)
+ foreach (FieldMember f in fields)
+ f.Emit ();
+
+ if (events != null){
+ foreach (Event e in Events)
+ e.Emit ();
+ }
+
+ if (delegates != null) {
+ foreach (Delegate d in Delegates) {
+ d.Emit ();
+ }
+ }
+
+ if (enums != null) {
+ foreach (Enum e in enums) {
+ e.Emit ();
+ }
+ }
+
+ if (pending != null)
+ if (pending.VerifyPendingMethods ())
+ return;
+
+ if (Report.Errors > 0)
+ return;
+
+ if (compiler_generated != null) {
+ foreach (CompilerGeneratedClass c in compiler_generated) {
+ if (!c.DefineMembers ())
+ throw new InternalErrorException ();
+ }
+ foreach (CompilerGeneratedClass c in compiler_generated)
+ c.EmitType ();
+ }
+ }
+
+ public override void CloseType ()
+ {
+ if ((caching_flags & Flags.CloseTypeCreated) != 0)
+ return;
+
+ try {
+ caching_flags |= Flags.CloseTypeCreated;
+ TypeBuilder.CreateType ();
+ } catch (TypeLoadException){
+ //
+ // This is fine, the code still created the type
+ //
+// Report.Warning (-20, "Exception while creating class: " + TypeBuilder.Name);
+// Console.WriteLine (e.Message);
+ } catch {
+ Console.WriteLine ("In type: " + Name);
+ throw;
+ }
+
+ if (Enums != null)
+ foreach (Enum en in Enums)
+ en.CloseType ();
+
+ if (Types != null){
+ foreach (TypeContainer tc in Types)
+ if (tc.Kind == Kind.Struct)
+ tc.CloseType ();
+
+ foreach (TypeContainer tc in Types)
+ if (tc.Kind != Kind.Struct)
+ tc.CloseType ();
+ }
+
+ if (Delegates != null)
+ foreach (Delegate d in Delegates)
+ d.CloseType ();
+
+ if (CompilerGenerated != null)
+ foreach (CompilerGeneratedClass c in CompilerGenerated)
+ c.CloseType ();
+
+ types = null;
+ properties = null;
+ enums = null;
+ delegates = null;
+ fields = null;
+ initialized_fields = null;
+ initialized_static_fields = null;
+ constants = null;
+ interfaces = null;
+ methods = null;
+ events = null;
+ indexers = null;
+ operators = null;
+ compiler_generated = null;
+ default_constructor = null;
+ default_static_constructor = null;
+ type_bases = null;
+ OptAttributes = null;
+ ifaces = null;
+ base_cache = null;
+ member_cache = null;
+ }
+
+ //
+ // Performs the validation on a Method's modifiers (properties have
+ // the same properties).
+ //
+ public bool MethodModifiersValid (MemberCore mc)
+ {
+ const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
+ const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
+ const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
+ bool ok = true;
+ int flags = mc.ModFlags;
+
+ //
+ // At most one of static, virtual or override
+ //
+ if ((flags & Modifiers.STATIC) != 0){
+ if ((flags & vao) != 0){
+ Report.Error (112, mc.Location, "A static member `{0}' cannot be marked as override, virtual or abstract",
+ mc.GetSignatureForError ());
+ ok = false;
+ }
+ }
+
+ if (Kind == Kind.Struct){
+ if ((flags & va) != 0){
+ Modifiers.Error_InvalidModifier (mc.Location, "virtual or abstract");
+ ok = false;
+ }
+ }
+
+ if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
+ Report.Error (113, mc.Location, "A member `{0}' marked as override cannot be marked as new or virtual",
+ mc.GetSignatureForError ());
+ ok = false;
+ }
+
+ //
+ // If the declaration includes the abstract modifier, then the
+ // declaration does not include static, virtual or extern
+ //
+ if ((flags & Modifiers.ABSTRACT) != 0){
+ if ((flags & Modifiers.EXTERN) != 0){
+ Report.Error (
+ 180, mc.Location, "`{0}' cannot be both extern and abstract", mc.GetSignatureForError ());
+ ok = false;
+ }
+
+ if ((flags & Modifiers.SEALED) != 0) {
+ Report.Error (502, mc.Location, "`{0}' cannot be both abstract and sealed", mc.GetSignatureForError ());
+ ok = false;
+ }
+
+ if ((flags & Modifiers.VIRTUAL) != 0){
+ Report.Error (503, mc.Location, "The abstract method `{0}' cannot be marked virtual", mc.GetSignatureForError ());
+ ok = false;
+ }
+
+ if ((ModFlags & Modifiers.ABSTRACT) == 0){
+ Report.Error (513, mc.Location, "`{0}' is abstract but it is contained in nonabstract class", mc.GetSignatureForError ());
+ ok = false;
+ }
+ }
+
+ if ((flags & Modifiers.PRIVATE) != 0){
+ if ((flags & vao) != 0){
+ Report.Error (621, mc.Location, "`{0}': virtual or abstract members cannot be private", mc.GetSignatureForError ());
+ ok = false;
+ }
+ }
+
+ if ((flags & Modifiers.SEALED) != 0){
+ if ((flags & Modifiers.OVERRIDE) == 0){
+ Report.Error (238, mc.Location, "`{0}' cannot be sealed because it is not an override", mc.GetSignatureForError ());
+ ok = false;
+ }
+ }
+
+ return ok;
+ }
+
+ public Constructor DefaultStaticConstructor {
+ get { return default_static_constructor; }
+ }
+
+ protected override bool VerifyClsCompliance ()
+ {
+ if (!base.VerifyClsCompliance ())
+ return false;
+
+ VerifyClsName ();
+
+ Type base_type = TypeBuilder.BaseType;
+ if (base_type != null && !AttributeTester.IsClsCompliant (base_type)) {
+ Report.Error (3009, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (base_type));
+ }
+
+ if (!Parent.IsClsComplianceRequired ()) {
+ Report.Error (3018, Location, "`{0}' cannot be marked as CLS-compliant because it is a member of non CLS-compliant type `{1}'",
+ GetSignatureForError (), Parent.GetSignatureForError ());
+ }
+ return true;
+ }
+
+
+ /// <summary>
+ /// Checks whether container name is CLS Compliant
+ /// </summary>
+ void VerifyClsName ()
+ {
+ Hashtable base_members = base_cache == null ?
+ new Hashtable () :
+ base_cache.GetPublicMembers ();
+ Hashtable this_members = new Hashtable ();
+
+ foreach (DictionaryEntry entry in defined_names) {
+ MemberCore mc = (MemberCore)entry.Value;
+ if (!mc.IsClsComplianceRequired ())
+ continue;
+
+ string name = (string) entry.Key;
+ string basename = name.Substring (name.LastIndexOf ('.') + 1);
+
+ string lcase = basename.ToLower (System.Globalization.CultureInfo.InvariantCulture);
+ object found = base_members [lcase];
+ if (found == null) {
+ found = this_members [lcase];
+ if (found == null) {
+ this_members.Add (lcase, mc);
+ continue;
+ }
+ }
+
+ if ((mc.ModFlags & Modifiers.OVERRIDE) != 0)
+ continue;
+
+ if (found is MemberInfo) {
+ if (basename == ((MemberInfo) found).Name)
+ continue;
+ Report.SymbolRelatedToPreviousError ((MemberInfo) found);
+ } else {
+ Report.SymbolRelatedToPreviousError ((MemberCore) found);
+ }
+#if GMCS_SOURCE
+ Report.Warning (3005, 1, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
+#else
+ Report.Error (3005, mc.Location, "Identifier `{0}' differing only in case is not CLS-compliant", mc.GetSignatureForError ());
+#endif
+ }
+ }
+
+
+ /// <summary>
+ /// Performs checks for an explicit interface implementation. First it
+ /// checks whether the `interface_type' is a base inteface implementation.
+ /// Then it checks whether `name' exists in the interface type.
+ /// </summary>
+ public virtual bool VerifyImplements (MemberBase mb)
+ {
+ if (ifaces != null) {
+ foreach (Type t in ifaces){
+ if (t == mb.InterfaceType)
+ return true;
+ }
+ }
+
+ Report.SymbolRelatedToPreviousError (mb.InterfaceType);
+ Report.Error (540, mb.Location, "`{0}': containing type does not implement interface `{1}'",
+ mb.GetSignatureForError (), TypeManager.CSharpName (mb.InterfaceType));
+ return false;
+ }
+
+ public void Mark_HasEquals ()
+ {
+ Methods.HasEquals = true;
+ }
+
+ public void Mark_HasGetHashCode ()
+ {
+ Methods.HasGetHashCode = true;
+ }
+
+ //
+ // IMemberContainer
+ //
+
+ string IMemberContainer.Name {
+ get {
+ return Name;
+ }
+ }
+
+ Type IMemberContainer.Type {
+ get {
+ return TypeBuilder;
+ }
+ }
+
+ MemberCache IMemberContainer.MemberCache {
+ get {
+ return member_cache;
+ }
+ }
+
+ bool IMemberContainer.IsInterface {
+ get {
+ return Kind == Kind.Interface;
+ }
+ }
+
+ MemberList IMemberContainer.GetMembers (MemberTypes mt, BindingFlags bf)
+ {
+ BindingFlags new_bf = bf | BindingFlags.DeclaredOnly;
+
+ if (GenericType != null)
+ return TypeManager.FindMembers (GenericType, mt, new_bf,
+ null, null);
+ else
+ return FindMembers (mt, new_bf, null, null);
+ }
+
+ //
+ // Generates xml doc comments (if any), and if required,
+ // handle warning report.
+ //
+ internal override void GenerateDocComment (DeclSpace ds)
+ {
+ DocUtil.GenerateTypeDocComment (this, ds);
+ }
+
+ public override string DocCommentHeader {
+ get { return "T:"; }
+ }
+
+ public virtual MemberCache BaseCache {
+ get {
+ if (base_cache != null)
+ return base_cache;
+ if (TypeBuilder.BaseType != null)
+ base_cache = TypeManager.LookupMemberCache (TypeBuilder.BaseType);
+ if (TypeBuilder.IsInterface)
+ base_cache = TypeManager.LookupBaseInterfacesCache (TypeBuilder);
+ return base_cache;
+ }
+ }
+ }
+
+ public abstract class ClassOrStruct : TypeContainer {
+ ListDictionary declarative_security;
+
+ public ClassOrStruct (NamespaceEntry ns, DeclSpace parent,
+ MemberName name, Attributes attrs, Kind kind)
+ : base (ns, parent, name, attrs, kind)
+ {
+ }
+
+ protected override bool AddToContainer (MemberCore symbol, string name)
+ {
+ if (name == MemberName.Name) {
+ if (symbol is TypeParameter) {
+ Report.Error (694, symbol.Location,
+ "Type parameter `{0}' has same name as " +
+ "containing type, or method", name);
+ return false;
+ }
+
+ Report.SymbolRelatedToPreviousError (this);
+ Report.Error (542, symbol.Location, "`{0}': member names cannot be the same as their enclosing type",
+ symbol.GetSignatureForError ());
+ return false;
+ }
+
+ return base.AddToContainer (symbol, name);
+ }
+
+ public override void VerifyMembers ()
+ {
+ base.VerifyMembers ();
+
+ if ((events != null) && (RootContext.WarningLevel >= 3)) {
+ foreach (Event e in events){
+ if ((e.ModFlags & Modifiers.Accessibility) != Modifiers.PRIVATE)
+ continue;
+
+ if ((e.caching_flags & Flags.IsUsed) == 0)
+ Report.Warning (67, 3, e.Location, "The event `{0}' is never used", e.GetSignatureForError ());
+ }
+ }
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
+ if (declarative_security == null)
+ declarative_security = new ListDictionary ();
+
+ a.ExtractSecurityPermissionSet (declarative_security);
+ return;
+ }
+
+ if (a.Type == TypeManager.struct_layout_attribute_type && a.GetLayoutKindValue () == LayoutKind.Explicit) {
+ HasExplicitLayout = true;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ /// <summary>
+ /// Defines the default constructors
+ /// </summary>
+ protected void DefineDefaultConstructor (bool is_static)
+ {
+ // The default instance constructor is public
+ // If the class is abstract, the default constructor is protected
+ // The default static constructor is private
+
+ int mods;
+ if (is_static) {
+ mods = Modifiers.STATIC | Modifiers.PRIVATE;
+ } else {
+ mods = ((ModFlags & Modifiers.ABSTRACT) != 0) ? Modifiers.PROTECTED : Modifiers.PUBLIC;
+ }
+
+ Constructor c = new Constructor (this, MemberName.Name, mods,
+ Parameters.EmptyReadOnlyParameters,
+ new GeneratedBaseInitializer (Location),
+ Location);
+
+ AddConstructor (c);
+ c.Block = new ToplevelBlock (null, Location);
+ }
+
+ void DefineFieldInitializers ()
+ {
+ if (initialized_fields != null) {
+ for (int i = 0; i < initialized_fields.Count; ++i) {
+ FieldBase fb = (FieldBase)initialized_fields[i];
+ fb.ResolveInitializer ();
+ if (fb.HasDefaultInitializer && RootContext.Optimize) {
+ // Field is re-initialized to its default value => removed
+ initialized_fields.RemoveAt (i);
+ --i;
+ }
+ }
+ }
+
+ if (initialized_static_fields != null) {
+ bool has_complex_initializer = false;
+
+ foreach (FieldBase fb in initialized_static_fields) {
+ if (fb.ResolveInitializer () is Constant)
+ continue;
+
+ has_complex_initializer = true;
+ }
+
+ // Need special check to not optimize code like this
+ // static int a = b = 5;
+ // static int b = 0;
+ if (!has_complex_initializer && RootContext.Optimize) {
+ for (int i = 0; i < initialized_static_fields.Count; ++i) {
+ FieldBase fb = (FieldBase)initialized_static_fields[i];
+ if (fb.HasDefaultInitializer) {
+ initialized_static_fields.RemoveAt (i);
+ --i;
+ }
+ }
+ }
+
+ if (default_static_constructor == null && initialized_static_fields.Count > 0) {
+ DefineDefaultConstructor (true);
+ }
+ }
+
+ }
+
+ public override bool Define ()
+ {
+ DefineFieldInitializers ();
+
+ if (default_static_constructor != null)
+ default_static_constructor.Define ();
+
+ return base.Define ();
+ }
+
+ public override void Emit ()
+ {
+ base.Emit ();
+
+ if (declarative_security != null) {
+ foreach (DictionaryEntry de in declarative_security) {
+ TypeBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
+ }
+ }
+ }
+
+ protected override TypeAttributes TypeAttr {
+ get {
+ if (default_static_constructor == null)
+ return base.TypeAttr | TypeAttributes.BeforeFieldInit;
+
+ return base.TypeAttr;
+ }
+ }
+ }
+
+
+ // TODO: should be sealed
+ public class Class : ClassOrStruct {
+ const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
+ Modifiers.INTERNAL |
+ Modifiers.PRIVATE |
+ Modifiers.ABSTRACT |
+ Modifiers.SEALED |
+ Modifiers.STATIC |
+ Modifiers.UNSAFE;
+
+ public Class (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
+ Attributes attrs)
+ : base (ns, parent, name, attrs, Kind.Class)
+ {
+ int accmods = Parent.Parent == null ? Modifiers.INTERNAL : Modifiers.PRIVATE;
+ this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
+
+ if (IsStatic && RootContext.Version == LanguageVersion.ISO_1) {
+ Report.FeatureIsNotStandardized (Location, "static classes");
+ }
+ }
+
+ public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.attribute_usage_type) {
+ if (BaseType != TypeManager.attribute_type && !BaseType.IsSubclassOf (TypeManager.attribute_type) &&
+ TypeBuilder.FullName != "System.Attribute") {
+ Report.Error (641, a.Location, "Attribute `{0}' is only valid on classes derived from System.Attribute", a.GetSignatureForError ());
+ }
+ }
+
+ if (a.Type == TypeManager.conditional_attribute_type &&
+ !(BaseType == TypeManager.attribute_type || BaseType.IsSubclassOf (TypeManager.attribute_type))) {
+ Report.Error (1689, a.Location, "Attribute `System.Diagnostics.ConditionalAttribute' is only valid on methods or attribute classes");
+ return;
+ }
+
+ if (a.Type == TypeManager.comimport_attr_type &&
+ !attributes.Contains (TypeManager.guid_attr_type)) {
+ a.Error_MissingGuidAttribute ();
+ return;
+ }
+
+ if (AttributeTester.IsAttributeExcluded (a.Type))
+ return;
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Class;
+ }
+ }
+
+ protected override void DefineContainerMembers (MemberCoreArrayList list)
+ {
+ if (list == null)
+ return;
+
+ if (!IsStatic) {
+ base.DefineContainerMembers (list);
+ return;
+ }
+
+ foreach (MemberCore m in list) {
+ if (m is Operator) {
+ Report.Error (715, m.Location, "`{0}': Static classes cannot contain user-defined operators", m.GetSignatureForError ());
+ continue;
+ }
+
+ if (m is Destructor) {
+ Report.Error (711, m.Location, "`{0}': Static classes cannot contain destructor", GetSignatureForError ());
+ continue;
+ }
+
+ if ((m.ModFlags & Modifiers.PROTECTED) != 0) {
+ Report.Error (1057, m.Location, "`{0}': Static classes cannot contain protected members", m.GetSignatureForError ());
+ continue;
+ }
+
+ if (m is Indexer) {
+ Report.Error (720, m.Location, "`{0}': cannot declare indexers in a static class", m.GetSignatureForError ());
+ continue;
+ }
+
+ if ((m.ModFlags & Modifiers.STATIC) != 0 || m is Enum || m is Delegate)
+ continue;
+
+ if (m is Constructor) {
+ Report.Error (710, m.Location, "`{0}': Static classes cannot have instance constructors", GetSignatureForError ());
+ continue;
+ }
+
+ Report.Error (708, m.Location, "`{0}': cannot declare instance members in a static class", m.GetSignatureForError ());
+ }
+
+ base.DefineContainerMembers (list);
+ }
+
+ public override TypeBuilder DefineType ()
+ {
+ if ((ModFlags & Modifiers.ABSTRACT) == Modifiers.ABSTRACT && (ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) != 0) {
+ Report.Error (418, Location, "`{0}': an abstract class cannot be sealed or static", GetSignatureForError ());
+ return null;
+ }
+
+ if ((ModFlags & (Modifiers.SEALED | Modifiers.STATIC)) == (Modifiers.SEALED | Modifiers.STATIC)) {
+ Report.Error (441, Location, "`{0}': a class cannot be both static and sealed", GetSignatureForError ());
+ return null;
+ }
+
+ return base.DefineType ();
+ }
+
+ protected override bool DoDefineMembers ()
+ {
+ if (InstanceConstructors == null && !IsStatic)
+ DefineDefaultConstructor (false);
+
+ return base.DoDefineMembers ();
+ }
+
+ public override TypeExpr[] GetClassBases (out TypeExpr base_class)
+ {
+ TypeExpr[] ifaces = base.GetClassBases (out base_class);
+
+ if (base_class == null) {
+ if (RootContext.StdLib)
+ base_class = TypeManager.system_object_expr;
+ else if (Name != "System.Object")
+ base_class = TypeManager.system_object_expr;
+ } else {
+ if (Kind == Kind.Class && base_class is TypeParameterExpr){
+ Report.Error (
+ 689, base_class.Location,
+ "Cannot derive from `{0}' because it is a type parameter",
+ base_class.GetSignatureForError ());
+ return ifaces;
+ }
+
+ if (base_class.Type.IsArray || base_class.Type.IsPointer) {
+ Report.Error (1521, base_class.Location, "Invalid base type");
+ return ifaces;
+ }
+
+ if (base_class.IsSealed){
+ Report.SymbolRelatedToPreviousError (base_class.Type);
+ if (base_class.Type.IsAbstract) {
+ Report.Error (709, Location, "`{0}': Cannot derive from static class `{1}'",
+ GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
+ } else {
+ Report.Error (509, Location, "`{0}': cannot derive from sealed class `{1}'",
+ GetSignatureForError (), TypeManager.CSharpName (base_class.Type));
+ }
+ return ifaces;
+ }
+
+ if (!base_class.CanInheritFrom ()){
+ Report.Error (644, Location, "`{0}' cannot derive from special class `{1}'",
+ GetSignatureForError (), base_class.GetSignatureForError ());
+ return ifaces;
+ }
+
+ if (!base_class.AsAccessible (this, ModFlags)) {
+ Report.SymbolRelatedToPreviousError (base_class.Type);
+ Report.Error (60, Location, "Inconsistent accessibility: base class `{0}' is less accessible than class `{1}'",
+ TypeManager.CSharpName (base_class.Type), GetSignatureForError ());
+ }
+ }
+
+ if (IsStatic) {
+ if (base_class != TypeManager.system_object_expr) {
+ Report.Error (713, Location, "Static class `{0}' cannot derive from type `{1}'. Static classes must derive from object",
+ GetSignatureForError (), base_class.GetSignatureForError ());
+ return ifaces;
+ }
+
+ if (ifaces != null) {
+ foreach (TypeExpr t in ifaces)
+ Report.SymbolRelatedToPreviousError (t.Type);
+ Report.Error (714, Location, "`{0}': static classes cannot implement interfaces", GetSignatureForError ());
+ }
+ }
+
+ return ifaces;
+ }
+
+ /// Search for at least one defined condition in ConditionalAttribute of attribute class
+ /// Valid only for attribute classes.
+ public bool IsExcluded ()
+ {
+ if ((caching_flags & Flags.Excluded_Undetected) == 0)
+ return (caching_flags & Flags.Excluded) != 0;
+
+ caching_flags &= ~Flags.Excluded_Undetected;
+
+ if (OptAttributes == null)
+ return false;
+
+ Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
+
+ if (attrs == null)
+ return false;
+
+ foreach (Attribute a in attrs) {
+ string condition = a.GetConditionalAttributeValue ();
+ if (RootContext.AllDefines.Contains (condition))
+ return false;
+ }
+
+ caching_flags |= Flags.Excluded;
+ return true;
+ }
+
+ bool IsStatic {
+ get {
+ return (ModFlags & Modifiers.STATIC) != 0;
+ }
+ }
+
+ //
+ // FIXME: How do we deal with the user specifying a different
+ // layout?
+ //
+ protected override TypeAttributes TypeAttr {
+ get {
+ TypeAttributes ta = base.TypeAttr | TypeAttributes.AutoLayout | TypeAttributes.Class;
+ if (IsStatic)
+ ta |= TypeAttributes.Abstract | TypeAttributes.Sealed;
+ return ta;
+ }
+ }
+ }
+
+ public sealed class Struct : ClassOrStruct {
+ // <summary>
+ // Modifiers allowed in a struct declaration
+ // </summary>
+ const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
+ Modifiers.INTERNAL |
+ Modifiers.UNSAFE |
+ Modifiers.PRIVATE;
+
+ public Struct (NamespaceEntry ns, DeclSpace parent, MemberName name,
+ int mod, Attributes attrs)
+ : base (ns, parent, name, attrs, Kind.Struct)
+ {
+ int accmods;
+
+ if (parent.Parent == null)
+ accmods = Modifiers.INTERNAL;
+ else
+ accmods = Modifiers.PRIVATE;
+
+ this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, Location);
+
+ this.ModFlags |= Modifiers.SEALED;
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Struct;
+ }
+ }
+
+ const TypeAttributes DefaultTypeAttributes =
+ TypeAttributes.SequentialLayout |
+ TypeAttributes.Sealed |
+ TypeAttributes.BeforeFieldInit;
+
+
+ public override TypeExpr[] GetClassBases (out TypeExpr base_class)
+ {
+ TypeExpr[] ifaces = base.GetClassBases (out base_class);
+ //
+ // If we are compiling our runtime,
+ // and we are defining ValueType, then our
+ // base is `System.Object'.
+ //
+ if (base_class == null) {
+ if (!RootContext.StdLib && Name == "System.ValueType")
+ base_class = TypeManager.system_object_expr;
+ else
+ base_class = TypeManager.system_valuetype_expr;
+ }
+
+ return ifaces;
+ }
+
+ //
+ // FIXME: Allow the user to specify a different set of attributes
+ // in some cases (Sealed for example is mandatory for a class,
+ // but what SequentialLayout can be changed
+ //
+ protected override TypeAttributes TypeAttr {
+ get {
+ return base.TypeAttr | DefaultTypeAttributes;
+ }
+ }
+
+ public override void RegisterFieldForInitialization (FieldBase field)
+ {
+ if ((field.ModFlags & Modifiers.STATIC) == 0) {
+ Report.Error (573, field.Location, "`{0}': Structs cannot have instance field initializers",
+ field.GetSignatureForError ());
+ return;
+ }
+ base.RegisterFieldForInitialization (field);
+ }
+
+ }
+
+ /// <summary>
+ /// Interfaces
+ /// </summary>
+ public sealed class Interface : TypeContainer, IMemberContainer {
+
+ /// <summary>
+ /// Modifiers allowed in a class declaration
+ /// </summary>
+ public const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
+ Modifiers.INTERNAL |
+ Modifiers.UNSAFE |
+ Modifiers.PRIVATE;
+
+ public Interface (NamespaceEntry ns, DeclSpace parent, MemberName name, int mod,
+ Attributes attrs)
+ : base (ns, parent, name, attrs, Kind.Interface)
+ {
+ int accmods;
+
+ if (parent.Parent == null)
+ accmods = Modifiers.INTERNAL;
+ else
+ accmods = Modifiers.PRIVATE;
+
+ this.ModFlags = Modifiers.Check (AllowedModifiers, mod, accmods, name.Location);
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.comimport_attr_type &&
+ !attributes.Contains (TypeManager.guid_attr_type)) {
+ a.Error_MissingGuidAttribute ();
+ return;
+ }
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Interface;
+ }
+ }
+
+ const TypeAttributes DefaultTypeAttributes =
+ TypeAttributes.AutoLayout |
+ TypeAttributes.Abstract |
+ TypeAttributes.Interface;
+
+ protected override TypeAttributes TypeAttr {
+ get {
+ return base.TypeAttr | DefaultTypeAttributes;
+ }
+ }
+
+ protected override bool VerifyClsCompliance ()
+ {
+ if (!base.VerifyClsCompliance ())
+ return false;
+
+ if (ifaces != null) {
+ foreach (Type t in ifaces) {
+ if (AttributeTester.IsClsCompliant (t))
+ continue;
+
+ Report.SymbolRelatedToPreviousError (t);
+ Report.Warning (3027, 1, Location, "`{0}' is not CLS-compliant because base interface `{1}' is not CLS-compliant",
+ GetSignatureForError (), TypeManager.CSharpName (t));
+ }
+ }
+
+ return true;
+ }
+ }
+
+ public abstract class MethodCore : MemberBase {
+ public readonly Parameters Parameters;
+ protected ToplevelBlock block;
+
+ //
+ // The method we're overriding if this is an override method.
+ //
+ protected MethodInfo base_method = null;
+
+ public MethodCore (DeclSpace parent, GenericMethod generic,
+ Expression type, int mod, int allowed_mod, bool is_iface,
+ MemberName name, Attributes attrs, Parameters parameters)
+ : base (parent, generic, type, mod, allowed_mod, Modifiers.PRIVATE,
+ name, attrs)
+ {
+ Parameters = parameters;
+ IsInterface = is_iface;
+ }
+
+ //
+ // Returns the System.Type array for the parameters of this method
+ //
+ public Type [] ParameterTypes {
+ get {
+ return Parameters.Types;
+ }
+ }
+
+ public Parameters ParameterInfo
+ {
+ get {
+ return Parameters;
+ }
+ }
+
+ public ToplevelBlock Block {
+ get {
+ return block;
+ }
+
+ set {
+ block = value;
+ }
+ }
+
+ public virtual void SetYields ()
+ {
+ ModFlags |= Modifiers.METHOD_YIELDS;
+ }
+
+ protected override bool CheckBase ()
+ {
+ if (!base.CheckBase ())
+ return false;
+
+ // Check whether arguments were correct.
+ if (!DoDefineParameters ())
+ return false;
+
+ if ((caching_flags & Flags.TestMethodDuplication) != 0 && !CheckForDuplications ())
+ return false;
+
+ if (IsExplicitImpl)
+ return true;
+
+ // Is null for System.Object while compiling corlib and base interfaces
+ if (Parent.PartialContainer.BaseCache == null) {
+ if ((RootContext.WarningLevel >= 4) && ((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;
+ }
+
+ Type base_ret_type = null;
+ base_method = FindOutBaseMethod (ref base_ret_type);
+
+ // method is override
+ if (base_method != null) {
+
+ if (!CheckMethodAgainstBase ())
+ return false;
+
+ if ((ModFlags & Modifiers.NEW) == 0) {
+ if (!TypeManager.IsEqual (MemberType, TypeManager.TypeToCoreType (base_ret_type))) {
+ Report.SymbolRelatedToPreviousError (base_method);
+ if (this is PropertyBase) {
+ Report.Error (1715, Location, "`{0}': type must be `{1}' to match overridden member `{2}'",
+ GetSignatureForError (), TypeManager.CSharpName (base_ret_type), TypeManager.CSharpSignature (base_method));
+ }
+ else {
+ Report.Error (508, Location, "`{0}': return type must be `{1}' to match overridden member `{2}'",
+ GetSignatureForError (), TypeManager.CSharpName (base_ret_type), TypeManager.CSharpSignature (base_method));
+ }
+ return false;
+ }
+ } else {
+ if (base_method.IsAbstract && !IsInterface) {
+ Report.SymbolRelatedToPreviousError (base_method);
+ Report.Error (533, Location, "`{0}' hides inherited abstract member `{1}'",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method));
+ return false;
+ }
+ }
+
+ if (base_method.IsSpecialName && !(this is PropertyBase)) {
+ Report.Error (115, Location, "`{0}': no suitable method found to override", GetSignatureForError ());
+ return false;
+ }
+
+ if (Name == "Equals" && Parameters.Count == 1 && ParameterTypes [0] == TypeManager.object_type)
+ Parent.PartialContainer.Mark_HasEquals ();
+ else if (Name == "GetHashCode" && Parameters.Empty)
+ Parent.PartialContainer.Mark_HasGetHashCode ();
+
+ if ((ModFlags & Modifiers.OVERRIDE) != 0) {
+ ObsoleteAttribute oa = AttributeTester.GetMethodObsoleteAttribute (base_method);
+ if (oa != null) {
+ if (OptAttributes == null || !OptAttributes.Contains (TypeManager.obsolete_attribute_type)) {
+ Report.SymbolRelatedToPreviousError (base_method);
+ Report.Warning (672, 1, Location, "Member `{0}' overrides obsolete member `{1}'. Add the Obsolete attribute to `{0}'",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method) );
+ }
+ }
+ }
+ return true;
+ }
+
+ MemberInfo conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, !(this is Property));
+ if ((ModFlags & Modifiers.OVERRIDE) != 0) {
+ if (conflict_symbol != null) {
+ Report.SymbolRelatedToPreviousError (conflict_symbol);
+ if (this is PropertyBase)
+ Report.Error (544, Location, "`{0}': cannot override because `{1}' is not a property", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
+ else
+ Report.Error (505, Location, "`{0}': cannot override because `{1}' is not a method", GetSignatureForError (), TypeManager.GetFullNameSignature (conflict_symbol));
+ } else
+ Report.Error (115, Location, "`{0}': no suitable method found to override", GetSignatureForError ());
+ return false;
+ }
+
+ if (conflict_symbol == null) {
+ if ((RootContext.WarningLevel >= 4) && ((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) == 0) {
+ if (this is Method && conflict_symbol is MethodBase)
+ return true;
+
+ 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;
+ }
+
+ //
+ // Performs various checks on the MethodInfo `mb' regarding the modifier flags
+ // that have been defined.
+ //
+ // `name' is the user visible name for reporting errors (this is used to
+ // provide the right name regarding method names and properties)
+ //
+ bool CheckMethodAgainstBase ()
+ {
+ bool ok = true;
+
+ if ((ModFlags & Modifiers.OVERRIDE) != 0){
+ if (!(base_method.IsAbstract || base_method.IsVirtual)){
+ Report.Error (506, Location,
+ "`{0}': cannot override inherited member `{1}' because it is not marked virtual, abstract or override",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method));
+ ok = false;
+ }
+
+ // Now we check that the overriden method is not final
+
+ if (base_method.IsFinal) {
+ Report.SymbolRelatedToPreviousError (base_method);
+ Report.Error (239, Location, "`{0}': cannot override inherited member `{1}' because it is sealed",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method));
+ ok = false;
+ }
+ //
+ // Check that the permissions are not being changed
+ //
+ MethodAttributes thisp = flags & MethodAttributes.MemberAccessMask;
+ MethodAttributes base_classp = base_method.Attributes & MethodAttributes.MemberAccessMask;
+
+ if (!CheckAccessModifiers (thisp, base_classp, base_method)) {
+ Error_CannotChangeAccessModifiers (base_method, base_classp, null);
+ ok = false;
+ }
+ }
+
+ if ((ModFlags & (Modifiers.NEW | Modifiers.OVERRIDE)) == 0 && Name != "Finalize") {
+ ModFlags |= Modifiers.NEW;
+ Report.SymbolRelatedToPreviousError (base_method);
+ if (!IsInterface && (base_method.IsVirtual || base_method.IsAbstract)) {
+ Report.Warning (114, 2, Location, "`{0}' hides inherited member `{1}'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method));
+ } else {
+ Report.Warning (108, 2, Location, "`{0}' hides inherited member `{1}'. Use the new keyword if hiding was intended",
+ GetSignatureForError (), TypeManager.CSharpSignature (base_method));
+ }
+ }
+
+ return ok;
+ }
+
+ protected bool CheckAccessModifiers (MethodAttributes thisp, MethodAttributes base_classp, MethodInfo base_method)
+ {
+ if ((base_classp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
+ //
+ // when overriding protected internal, the method can be declared
+ // protected internal only within the same assembly
+ //
+
+ if ((thisp & MethodAttributes.FamORAssem) == MethodAttributes.FamORAssem){
+ if (Parent.TypeBuilder.Assembly != base_method.DeclaringType.Assembly){
+ //
+ // assemblies differ - report an error
+ //
+
+ return false;
+ } else if (thisp != base_classp) {
+ //
+ // same assembly, but other attributes differ - report an error
+ //
+
+ return false;
+ };
+ } else if ((thisp & MethodAttributes.Family) != MethodAttributes.Family) {
+ //
+ // if it's not "protected internal", it must be "protected"
+ //
+
+ return false;
+ } else if (Parent.TypeBuilder.Assembly == base_method.DeclaringType.Assembly) {
+ //
+ // protected within the same assembly - an error
+ //
+ return false;
+ } else if ((thisp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem)) !=
+ (base_classp & ~(MethodAttributes.Family | MethodAttributes.FamORAssem))) {
+ //
+ // protected ok, but other attributes differ - report an error
+ //
+ return false;
+ }
+ return true;
+ } else {
+ return (thisp == base_classp);
+ }
+ }
+
+ public bool CheckAbstractAndExtern (bool has_block)
+ {
+ if (Parent.PartialContainer.Kind == Kind.Interface)
+ return true;
+
+ if (has_block) {
+ if ((ModFlags & Modifiers.EXTERN) != 0) {
+ Report.Error (179, Location, "`{0}' cannot declare a body because it is marked extern",
+ GetSignatureForError ());
+ return false;
+ }
+
+ if ((ModFlags & Modifiers.ABSTRACT) != 0) {
+ Report.Error (500, Location, "`{0}' cannot declare a body because it is marked abstract",
+ GetSignatureForError ());
+ return false;
+ }
+ } else {
+ if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) == 0) {
+ Report.Error (501, Location, "`{0}' must declare a body because it is not marked abstract or extern",
+ GetSignatureForError ());
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ protected void Error_CannotChangeAccessModifiers (MemberInfo base_method, MethodAttributes ma, string suffix)
+ {
+ Report.SymbolRelatedToPreviousError (base_method);
+ string base_name = TypeManager.GetFullNameSignature (base_method);
+ string this_name = GetSignatureForError ();
+ if (suffix != null) {
+ base_name += suffix;
+ this_name += suffix;
+ }
+
+ Report.Error (507, Location, "`{0}': cannot change access modifiers when overriding `{1}' inherited member `{2}'",
+ this_name, Modifiers.GetDescription (ma), base_name);
+ }
+
+ protected static string Error722 {
+ get {
+ return "`{0}': static types cannot be used as return types";
+ }
+ }
+
+ /// <summary>
+ /// For custom member duplication search in a container
+ /// </summary>
+ protected abstract bool CheckForDuplications ();
+
+ /// <summary>
+ /// Gets base method and its return type
+ /// </summary>
+ protected abstract MethodInfo FindOutBaseMethod (ref Type base_ret_type);
+
+ protected bool DoDefineParameters ()
+ {
+ IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
+
+ // Check if arguments were correct
+ if (!Parameters.Resolve (rc))
+ return false;
+
+ return CheckParameters (ParameterTypes);
+ }
+
+ bool CheckParameters (Type [] parameters)
+ {
+ bool error = false;
+
+ foreach (Type partype in parameters){
+ if (partype == TypeManager.void_type) {
+ // TODO: location is wrong
+ Expression.Error_VoidInvalidInTheContext (Location);
+ return false;
+ }
+
+ if (partype.IsPointer){
+ if (!TypeManager.VerifyUnManaged (TypeManager.GetElementType (partype), Location))
+ error = true;
+ }
+
+ if (ds.AsAccessible (partype, ModFlags))
+ continue;
+
+ Report.SymbolRelatedToPreviousError (partype);
+ if (this is Indexer)
+ Report.Error (55, Location,
+ "Inconsistent accessibility: parameter type `" +
+ TypeManager.CSharpName (partype) + "' is less " +
+ "accessible than indexer `" + GetSignatureForError () + "'");
+ else if (this is Operator)
+ Report.Error (57, Location,
+ "Inconsistent accessibility: parameter type `" +
+ TypeManager.CSharpName (partype) + "' is less " +
+ "accessible than operator `" + GetSignatureForError () + "'");
+ else
+ Report.Error (51, Location,
+ "Inconsistent accessibility: parameter type `" +
+ TypeManager.CSharpName (partype) + "' is less " +
+ "accessible than method `" + GetSignatureForError () + "'");
+ error = true;
+ }
+
+ return !error;
+ }
+
+ protected override bool VerifyClsCompliance ()
+ {
+ if (!base.VerifyClsCompliance ()) {
+ if ((ModFlags & Modifiers.ABSTRACT) != 0 && Parent.TypeBuilder.IsClass && IsExposedFromAssembly () && Parent.IsClsComplianceRequired ()) {
+ Report.Error (3011, Location, "`{0}': only CLS-compliant members can be abstract", GetSignatureForError ());
+ }
+ return false;
+ }
+
+ if (Parameters.HasArglist) {
+ Report.Error (3000, Location, "Methods with variable arguments are not CLS-compliant");
+ }
+
+ if (!AttributeTester.IsClsCompliant (MemberType)) {
+ if (this is PropertyBase)
+ Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant",
+ GetSignatureForError ());
+ else
+ Report.Error (3002, Location, "Return type of `{0}' is not CLS-compliant",
+ GetSignatureForError ());
+ }
+
+ Parameters.VerifyClsCompliance ();
+
+ return true;
+ }
+
+ protected bool IsDuplicateImplementation (MethodCore method)
+ {
+ if (method == this || !(method.MemberName.Equals (MemberName)))
+ return false;
+
+ Type[] param_types = method.ParameterTypes;
+ // This never happen. Rewrite this as Equal
+ if (param_types == null && ParameterTypes == null)
+ return true;
+ if (param_types == null || ParameterTypes == null)
+ return false;
+
+ if (param_types.Length != ParameterTypes.Length)
+ return false;
+
+ if (method.Parameters.HasArglist != Parameters.HasArglist)
+ return false;
+
+ bool equal = true;
+
+ for (int i = 0; i < param_types.Length; i++) {
+ if (param_types [i] != ParameterTypes [i])
+ equal = false;
+ }
+
+ if (IsExplicitImpl && (method.InterfaceType != InterfaceType))
+ equal = false;
+
+ // TODO: make operator compatible with MethodCore to avoid this
+ if (this is Operator && method is Operator) {
+ if (MemberType != method.MemberType)
+ equal = false;
+ }
+
+ if (equal) {
+ //
+ // Try to report 663: method only differs on out/ref
+ //
+ Parameters info = ParameterInfo;
+ Parameters other_info = method.ParameterInfo;
+ for (int i = 0; i < info.Count; i++){
+ try {
+ if (info.ParameterModifier (i) != other_info.ParameterModifier (i)){
+ Report.SymbolRelatedToPreviousError (method);
+ Report.Error (663, Location, "`{0}': Methods cannot differ only on their use of ref and out on a parameters",
+ GetSignatureForError ());
+ return false;
+ }} catch {
+ Console.WriteLine ("Method is: {0} {1}", method.Location, method);
+ Console.WriteLine ("this is: {0} {1}", Location, this);
+ }
+ }
+
+ Report.SymbolRelatedToPreviousError (method);
+ if (this is Operator && method is Operator)
+ Report.Error (557, Location, "Duplicate user-defined conversion in type `{0}'", Parent.Name);
+ else
+ Report.Error (111, Location, TypeContainer.Error111, GetSignatureForError ());
+
+ return true;
+ }
+
+ return false;
+ }
+
+ public override bool IsUsed {
+ get { return IsExplicitImpl || base.IsUsed; }
+ }
+
+ //
+ // Returns a string that represents the signature for this
+ // member which should be used in XML documentation.
+ //
+ public override string GetDocCommentName (DeclSpace ds)
+ {
+ return DocUtil.GetMethodDocCommentName (this, ds);
+ }
+
+ //
+ // Raised (and passed an XmlElement that contains the comment)
+ // when GenerateDocComment is writing documentation expectedly.
+ //
+ // FIXME: with a few effort, it could be done with XmlReader,
+ // that means removal of DOM use.
+ //
+ internal override void OnGenerateDocComment (XmlElement el)
+ {
+ DocUtil.OnMethodGenerateDocComment (this, el);
+ }
+
+ //
+ // Represents header string for documentation comment.
+ //
+ public override string DocCommentHeader {
+ get { return "M:"; }
+ }
+
+ }
+
+ public abstract class MethodOrOperator : MethodCore, IMethodData
+ {
+ public MethodBuilder MethodBuilder;
+ ReturnParameter return_attributes;
+ ListDictionary declarative_security;
+ protected MethodData MethodData;
+
+ Iterator iterator;
+ ArrayList anonymous_methods;
+
+ static string[] attribute_targets = new string [] { "method", "return" };
+
+ protected MethodOrOperator (DeclSpace parent, GenericMethod generic, Expression type, int mod,
+ int allowed_mod, bool is_interface, MemberName name,
+ Attributes attrs, Parameters parameters)
+ : base (parent, generic, type, mod, allowed_mod, is_interface, name,
+ attrs, parameters)
+ {
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Target == AttributeTargets.ReturnValue) {
+ if (return_attributes == null)
+ return_attributes = new ReturnParameter (MethodBuilder, Location);
+
+ return_attributes.ApplyAttributeBuilder (a, cb);
+ return;
+ }
+
+ if (a.Type == TypeManager.methodimpl_attr_type &&
+ (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
+ MethodBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
+ }
+
+ if (a.Type == TypeManager.dllimport_type) {
+ const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
+ if ((ModFlags & extern_static) != extern_static) {
+ Report.Error (601, a.Location, "The DllImport attribute must be specified on a method marked `static' and `extern'");
+ }
+
+ return;
+ }
+
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
+ if (declarative_security == null)
+ declarative_security = new ListDictionary ();
+ a.ExtractSecurityPermissionSet (declarative_security);
+ return;
+ }
+
+ MethodBuilder.SetCustomAttribute (cb);
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Method;
+ }
+ }
+
+ public virtual EmitContext CreateEmitContext (DeclSpace tc, ILGenerator ig)
+ {
+ return new EmitContext (
+ this, tc, this.ds, Location, ig, MemberType, ModFlags, false);
+ }
+
+ public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
+ {
+ if (anonymous_methods == null)
+ anonymous_methods = new ArrayList ();
+ anonymous_methods.Add (anonymous);
+ }
+
+ protected bool DefineGenericMethod ()
+ {
+ if (!DoDefineBase ())
+ return false;
+
+#if GMCS_SOURCE
+ if (GenericMethod != null) {
+ string method_name = MemberName.Name;
+
+ if (IsExplicitImpl) {
+ method_name = TypeManager.CSharpName (InterfaceType) +
+ '.' + method_name;
+ }
+
+ MethodBuilder = Parent.TypeBuilder.DefineMethod (method_name, flags);
+
+ if (!GenericMethod.Define (MethodBuilder, block))
+ return false;
+ }
+#endif
+
+ return true;
+ }
+
+ public bool ResolveMembers ()
+ {
+ if (!DefineGenericMethod ())
+ return false;
+
+ if ((ModFlags & Modifiers.METHOD_YIELDS) != 0) {
+ iterator = Iterator.CreateIterator (
+ this, Parent.PartialContainer, GenericMethod, ModFlags);
+
+ if (iterator == null)
+ return false;
+ }
+
+ if (anonymous_methods != null) {
+ foreach (AnonymousMethodExpression ame in anonymous_methods) {
+ if (!ame.CreateAnonymousHelpers ())
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public override bool Define ()
+ {
+ if (!DoDefine ())
+ return false;
+
+ if (!CheckAbstractAndExtern (block != null))
+ return false;
+
+ if (!CheckBase ())
+ return false;
+
+ MethodData = new MethodData (
+ this, ModFlags, flags, this, MethodBuilder, GenericMethod, base_method);
+
+ if (!MethodData.Define (Parent.PartialContainer))
+ return false;
+
+ MethodBuilder = MethodData.MethodBuilder;
+
+ if (MemberType.IsAbstract && MemberType.IsSealed) {
+ Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
+ return false;
+ }
+
+ return true;
+ }
+
+ public override void Emit ()
+ {
+ if (OptAttributes != null)
+ OptAttributes.Emit ();
+
+ if (declarative_security != null) {
+ foreach (DictionaryEntry de in declarative_security) {
+ MethodBuilder.AddDeclarativeSecurity ((SecurityAction)de.Key, (PermissionSet)de.Value);
+ }
+ }
+
+ base.Emit ();
+ }
+
+ protected void Error_ConditionalAttributeIsNotValid ()
+ {
+ Report.Error (577, Location,
+ "Conditional not valid on `{0}' because it is a constructor, destructor, operator or explicit interface implementation",
+ GetSignatureForError ());
+ }
+
+ public override bool MarkForDuplicationCheck ()
+ {
+ caching_flags |= Flags.TestMethodDuplication;
+ return true;
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+
+ #region IMethodData Members
+
+ public CallingConventions CallingConventions {
+ get {
+ CallingConventions cc = Parameters.CallingConvention;
+ if (Parameters.HasArglist)
+ block.HasVarargs = true;
+
+ if (!IsInterface)
+ if ((ModFlags & Modifiers.STATIC) == 0)
+ cc |= CallingConventions.HasThis;
+
+ // FIXME: How is `ExplicitThis' used in C#?
+
+ return cc;
+ }
+ }
+
+ public Type ReturnType {
+ get {
+ return MemberType;
+ }
+ }
+
+ public MemberName MethodName {
+ get {
+ return MemberName;
+ }
+ }
+
+ public Iterator Iterator {
+ get { return iterator; }
+ }
+
+ public new Location Location {
+ get {
+ return base.Location;
+ }
+ }
+
+ protected override bool CheckBase() {
+ if (!base.CheckBase ())
+ return false;
+
+ // TODO: Destructor should derive from MethodCore
+ if (base_method != null && (ModFlags & Modifiers.OVERRIDE) != 0 && Name == "Finalize" &&
+ base_method.DeclaringType == TypeManager.object_type && !(this is Destructor)) {
+ Report.Error (249, Location, "Do not override object.Finalize. Instead, provide a destructor");
+ return false;
+ }
+
+ return true;
+ }
+
+ /// <summary>
+ /// Returns true if method has conditional attribute and the conditions is not defined (method is excluded).
+ /// </summary>
+ public bool IsExcluded () {
+ if ((caching_flags & Flags.Excluded_Undetected) == 0)
+ return (caching_flags & Flags.Excluded) != 0;
+
+ caching_flags &= ~Flags.Excluded_Undetected;
+
+ if (base_method == null) {
+ if (OptAttributes == null)
+ return false;
+
+ Attribute[] attrs = OptAttributes.SearchMulti (TypeManager.conditional_attribute_type);
+
+ if (attrs == null)
+ return false;
+
+ foreach (Attribute a in attrs) {
+ string condition = a.GetConditionalAttributeValue ();
+ if (condition == null)
+ return false;
+
+ if (RootContext.AllDefines.Contains (condition))
+ return false;
+ }
+
+ caching_flags |= Flags.Excluded;
+ return true;
+ }
+
+ IMethodData md = TypeManager.GetMethod (base_method);
+ if (md == null) {
+ if (AttributeTester.IsConditionalMethodExcluded (base_method)) {
+ caching_flags |= Flags.Excluded;
+ return true;
+ }
+ return false;
+ }
+
+ if (md.IsExcluded ()) {
+ caching_flags |= Flags.Excluded;
+ return true;
+ }
+ return false;
+ }
+
+ GenericMethod IMethodData.GenericMethod {
+ get {
+ return GenericMethod;
+ }
+ }
+
+ #endregion
+
+ }
+
+ public class SourceMethod : ISourceMethod
+ {
+ DeclSpace parent;
+ MethodBase builder;
+
+ protected SourceMethod (DeclSpace parent, MethodBase builder,
+ ISourceFile file, Location start, Location end)
+ {
+ this.parent = parent;
+ this.builder = builder;
+
+ CodeGen.SymbolWriter.OpenMethod (file, this, start.Row, start.Column, end.Row, start.Column);
+ }
+
+ public string Name {
+ get { return builder.Name; }
+ }
+
+ public int NamespaceID {
+ get { return parent.NamespaceEntry.SymbolFileID; }
+ }
+
+ public int Token {
+ get {
+ if (builder is MethodBuilder)
+ return ((MethodBuilder) builder).GetToken ().Token;
+ else if (builder is ConstructorBuilder)
+ return ((ConstructorBuilder) builder).GetToken ().Token;
+ else
+ throw new NotSupportedException ();
+ }
+ }
+
+ public void CloseMethod ()
+ {
+ if (CodeGen.SymbolWriter != null)
+ CodeGen.SymbolWriter.CloseMethod ();
+ }
+
+ public static SourceMethod Create (DeclSpace parent, MethodBase builder, Block block)
+ {
+ if (CodeGen.SymbolWriter == null)
+ return null;
+ if (block == null)
+ return null;
+
+ Location start_loc = block.StartLocation;
+ if (start_loc.IsNull)
+ return null;
+
+ Location end_loc = block.EndLocation;
+ if (end_loc.IsNull)
+ return null;
+
+ ISourceFile file = start_loc.SourceFile;
+ if (file == null)
+ return null;
+
+ return new SourceMethod (
+ parent, builder, file, start_loc, end_loc);
+ }
+ }
+
+ public class Method : MethodOrOperator, IAnonymousHost {
+
+ /// <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.METHOD_YIELDS |
+ Modifiers.EXTERN;
+
+ const int AllowedInterfaceModifiers =
+ Modifiers.NEW | Modifiers.UNSAFE;
+
+ //
+ // return_type can be "null" for VOID values.
+ //
+ public Method (DeclSpace parent, GenericMethod generic,
+ Expression return_type, int mod, bool is_iface,
+ MemberName name, Parameters parameters, Attributes attrs)
+ : base (parent, generic, return_type, mod,
+ is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
+ is_iface, name, attrs, parameters)
+ {
+ }
+
+ public override string GetSignatureForError()
+ {
+ return base.GetSignatureForError () + Parameters.GetSignatureForError ();
+ }
+
+ void Error_DuplicateEntryPoint (MethodInfo b, Location location)
+ {
+ Report.Error (17, location,
+ "Program `{0}' has more than one entry point defined: `{1}'",
+ CodeGen.FileName, TypeManager.CSharpSignature(b));
+ }
+
+ bool IsEntryPoint (Parameters pinfo)
+ {
+ if (ReturnType != TypeManager.void_type &&
+ ReturnType != TypeManager.int32_type)
+ return false;
+
+ if (pinfo.Count == 0)
+ return true;
+
+ if (pinfo.Count > 1)
+ return false;
+
+ Type t = pinfo.ParameterType (0);
+ if (t.IsArray &&
+ (t.GetArrayRank () == 1) &&
+ (TypeManager.GetElementType (t) == TypeManager.string_type) &&
+ (pinfo.ParameterModifier (0) == Parameter.Modifier.NONE))
+ return true;
+ else
+ return false;
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.conditional_attribute_type) {
+ 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.Error (629, Location, "Conditional member `{0}' cannot implement interface member `{1}'",
+ GetSignatureForError (), TypeManager.CSharpSignature (MethodData.implementing));
+ return;
+ }
+
+ for (int i = 0; i < ParameterInfo.Count; ++i) {
+ if ((ParameterInfo.ParameterModifier (i) & Parameter.Modifier.OUTMASK) != 0) {
+ Report.Error (685, Location, "Conditional method `{0}' cannot have an out parameter", GetSignatureForError ());
+ return;
+ }
+ }
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ protected override bool CheckForDuplications ()
+ {
+ ArrayList ar = Parent.PartialContainer.Methods;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Method m = (Method) ar [i];
+ if (IsDuplicateImplementation (m))
+ return false;
+ }
+ }
+
+ 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;
+ }
+ }
+
+ ar = Parent.PartialContainer.Events;
+ if (ar != null) {
+ for (int i = 0; i < ar.Count; ++i) {
+ Event ev = (Event) ar [i];
+ if (ev.AreAccessorsDuplicateImplementation (this))
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ //
+ // Creates the type
+ //
+ public override bool Define ()
+ {
+ if (!base.Define ())
+ return false;
+
+ if (RootContext.StdLib && (ReturnType == TypeManager.arg_iterator_type || ReturnType == TypeManager.typed_reference_type)) {
+ Error1599 (Location, ReturnType);
+ return false;
+ }
+
+ if (ReturnType == TypeManager.void_type && ParameterTypes.Length == 0 &&
+ Name == "Finalize" && !(this is Destructor)) {
+ Report.Warning (465, 1, Location, "Introducing a 'Finalize' method can interfere with destructor invocation. Did you intend to declare a destructor?");
+ }
+
+ //
+ // This is used to track the Entry Point,
+ //
+ if (RootContext.NeedsEntryPoint && ((ModFlags & Modifiers.STATIC) != 0) &&
+ Name == "Main" &&
+ (RootContext.MainClass == null ||
+ RootContext.MainClass == Parent.TypeBuilder.FullName)){
+ if (IsEntryPoint (ParameterInfo)) {
+
+ 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 {
+ IMethodData md = TypeManager.GetMethod (MethodBuilder);
+ md.SetMemberIsUsed ();
+
+ RootContext.EntryPoint = MethodBuilder;
+ RootContext.EntryPointLocation = Location;
+ }
+ } else {
+ Error_DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
+ Error_DuplicateEntryPoint (MethodBuilder, Location);
+ }
+ } 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 ()
+ {
+ Report.Debug (64, "METHOD EMIT", this, MethodBuilder, Location, Block, MethodData);
+ MethodData.Emit (Parent);
+ base.Emit ();
+
+ Block = null;
+ MethodData = null;
+ }
+
+ 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, ParameterTypes, GenericMethod, false);
+
+ if (mi == null)
+ return null;
+
+ if (mi.IsSpecialName)
+ return null;
+
+ base_ret_type = mi.ReturnType;
+ return mi;
+ }
+
+ protected override bool VerifyClsCompliance ()
+ {
+ if (!base.VerifyClsCompliance ())
+ return false;
+
+ if (ParameterInfo.Count > 0) {
+ ArrayList al = (ArrayList)Parent.PartialContainer.MemberCache.Members [Name];
+ if (al.Count > 1)
+ MemberCache.VerifyClsParameterConflict (al, this, MethodBuilder);
+ }
+
+ return true;
+ }
+ }
+
+ public abstract class ConstructorInitializer {
+ ArrayList argument_list;
+ protected ConstructorInfo base_constructor;
+ Location loc;
+
+ public ConstructorInitializer (ArrayList argument_list, Location loc)
+ {
+ this.argument_list = argument_list;
+ this.loc = loc;
+ }
+
+ public ArrayList Arguments {
+ get {
+ return argument_list;
+ }
+ }
+
+ public bool Resolve (ConstructorBuilder caller_builder, Block block, EmitContext ec)
+ {
+ Expression base_constructor_group;
+ Type t;
+ bool error = false;
+
+ ec.CurrentBlock = block;
+
+ if (argument_list != null){
+ foreach (Argument a in argument_list){
+ if (!a.Resolve (ec, loc))
+ return false;
+ }
+ }
+ ec.CurrentBlock = null;
+
+ if (this is ConstructorBaseInitializer) {
+ if (ec.ContainerType.BaseType == null)
+ return true;
+
+ t = ec.ContainerType.BaseType;
+ if (ec.ContainerType.IsValueType) {
+ Report.Error (522, loc,
+ "`{0}': Struct constructors cannot call base constructors", TypeManager.CSharpSignature (caller_builder));
+ return false;
+ }
+ } else
+ t = ec.ContainerType;
+
+ base_constructor_group = Expression.MemberLookup (
+ ec.ContainerType, t, ".ctor", MemberTypes.Constructor,
+ BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
+ loc);
+
+ if (base_constructor_group == null){
+ error = true;
+ base_constructor_group = Expression.MemberLookup (
+ t, null, t, ".ctor", MemberTypes.Constructor,
+ BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly,
+ loc);
+ }
+
+ int errors = Report.Errors;
+ if (base_constructor_group != null)
+ base_constructor = (ConstructorInfo) Invocation.OverloadResolve (
+ ec, (MethodGroupExpr) base_constructor_group, argument_list,
+ false, loc);
+
+ if (base_constructor == null) {
+ if (errors == Report.Errors)
+ Invocation.Error_WrongNumArguments (loc, TypeManager.CSharpSignature (caller_builder),
+ argument_list == null ? 0 : argument_list.Count);
+ return false;
+ }
+
+ if (error) {
+ Report.SymbolRelatedToPreviousError (base_constructor);
+ Expression.ErrorIsInaccesible (loc, TypeManager.CSharpSignature (base_constructor));
+ base_constructor = null;
+ return false;
+ }
+
+ if (base_constructor == caller_builder){
+ Report.Error (516, loc, "Constructor `{0}' cannot call itself", TypeManager.CSharpSignature (caller_builder));
+ return false;
+ }
+
+ return true;
+ }
+
+ public virtual void Emit (EmitContext ec)
+ {
+ if (base_constructor != null){
+ ec.Mark (loc, false);
+ if (ec.IsStatic)
+ Invocation.EmitCall (ec, true, true, null, base_constructor, argument_list, loc);
+ else
+ Invocation.EmitCall (ec, true, false, ec.GetThis (loc), base_constructor, argument_list, loc);
+ }
+ }
+ }
+
+ public class ConstructorBaseInitializer : ConstructorInitializer {
+ public ConstructorBaseInitializer (ArrayList argument_list, Location l) :
+ base (argument_list, l)
+ {
+ }
+ }
+
+ class GeneratedBaseInitializer: ConstructorBaseInitializer {
+ public GeneratedBaseInitializer (Location loc):
+ base (null, loc)
+ {
+ }
+ }
+
+ public class ConstructorThisInitializer : ConstructorInitializer {
+ public ConstructorThisInitializer (ArrayList argument_list, Location l) :
+ base (argument_list, l)
+ {
+ }
+ }
+
+ public class Constructor : MethodCore, IMethodData, IAnonymousHost {
+ public ConstructorBuilder ConstructorBuilder;
+ public ConstructorInitializer Initializer;
+ ListDictionary declarative_security;
+ ArrayList anonymous_methods;
+
+ // <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 string[] attribute_targets = new string [] { "method" };
+
+ public Iterator Iterator {
+ get { return null; }
+ }
+
+ bool has_compliant_args = false;
+ //
+ // The spec claims that static is not permitted, but
+ // my very own code has static constructors.
+ //
+ public Constructor (DeclSpace parent, string name, int mod, Parameters args,
+ ConstructorInitializer init, Location loc)
+ : base (parent, null, null, mod, AllowedModifiers, false,
+ new MemberName (name, loc), null, 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.Empty;
+
+ return Parameters.Empty &&
+ (Initializer is ConstructorBaseInitializer) &&
+ (Initializer.Arguments == null);
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
+ if (declarative_security == null) {
+ declarative_security = new ListDictionary ();
+ }
+ a.ExtractSecurityPermissionSet (declarative_security);
+ return;
+ }
+
+ if (a.Type == TypeManager.methodimpl_attr_type &&
+ (a.GetMethodImplOptions () & MethodImplOptions.InternalCall) != 0) {
+ ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
+ }
+
+ ConstructorBuilder.SetCustomAttribute (cb);
+ }
+
+ public void AddAnonymousMethod (AnonymousMethodExpression anonymous)
+ {
+ if (anonymous_methods == null)
+ anonymous_methods = new ArrayList ();
+ anonymous_methods.Add (anonymous);
+ }
+
+ public bool ResolveMembers ()
+ {
+ if (anonymous_methods != null) {
+ foreach (AnonymousMethodExpression ame in anonymous_methods) {
+ if (!ame.CreateAnonymousHelpers ())
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ protected override bool CheckForDuplications ()
+ {
+ ArrayList ar = Parent.PartialContainer.InstanceConstructors;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Constructor m = (Constructor) ar [i];
+ if (IsDuplicateImplementation (m))
+ return false;
+ }
+ }
+ return true;
+ }
+
+ protected override bool CheckBase ()
+ {
+ if ((ModFlags & Modifiers.STATIC) != 0) {
+ if (!Parameters.Empty) {
+ 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 (!DoDefineParameters ())
+ return false;
+
+ if (!CheckForDuplications ())
+ return false;
+
+ if (Parent.PartialContainer.Kind == Kind.Struct) {
+ if (ParameterTypes.Length == 0) {
+ Report.Error (568, Location,
+ "Structs cannot contain explicit parameterless constructors");
+ return false;
+ }
+
+ if ((ModFlags & Modifiers.PROTECTED) != 0) {
+ Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
+ return false;
+ }
+ }
+
+ if ((RootContext.WarningLevel >= 4) && ((Parent.ModFlags & Modifiers.SEALED) != 0 && (ModFlags & Modifiers.PROTECTED) != 0)) {
+ Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
+ }
+
+ 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,
+ ParameterTypes);
+
+ if ((ModFlags & Modifiers.UNSAFE) != 0)
+ ConstructorBuilder.InitLocals = false;
+
+ 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 ());
+ return false;
+ }
+ ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.InternalCall);
+ }
+
+ TypeManager.AddMethod (ConstructorBuilder, this);
+
+ return true;
+ }
+
+ //
+ // Emits the code
+ //
+ public override void Emit ()
+ {
+ if (OptAttributes != null)
+ OptAttributes.Emit ();
+
+ EmitContext ec = CreateEmitContext (null, null);
+
+ 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, ParameterInfo))
+ block = null;
+ }
+
+ if ((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
+ //
+ ec.IsStatic = true;
+ if ((Initializer != null) &&
+ !Initializer.Resolve (ConstructorBuilder, block, ec))
+ return;
+ ec.IsStatic = false;
+ }
+
+ Parameters.ApplyAttributes (ConstructorBuilder);
+
+ SourceMethod source = SourceMethod.Create (
+ Parent, ConstructorBuilder, block);
+
+ //
+ // Classes can have base initializers and instance field initializers.
+ //
+ if (Parent.PartialContainer.Kind == Kind.Class){
+ if ((ModFlags & Modifiers.STATIC) == 0){
+
+ //
+ // If we use a "this (...)" constructor initializer, then
+ // do not emit field initializers, they are initialized in the other constructor
+ //
+ if (!(Initializer != null && Initializer is ConstructorThisInitializer))
+ Parent.PartialContainer.EmitFieldInitializers (ec);
+ }
+ }
+
+ bool unreachable = false;
+ if (block != null) {
+ ec.ResolveTopBlock (null, block, ParameterInfo, this, out unreachable);
+ ec.EmitMeta (block);
+ }
+
+ if (Initializer != null) {
+ Initializer.Emit (ec);
+ }
+
+ if ((ModFlags & Modifiers.STATIC) != 0)
+ Parent.PartialContainer.EmitFieldInitializers (ec);
+
+ if (block != null)
+ ec.EmitResolvedTopBlock (block, unreachable);
+
+ if (source != null)
+ source.CloseMethod ();
+
+ base.Emit ();
+
+ 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 (ParameterInfo.Count > 0) {
+ ArrayList al = (ArrayList)Parent.MemberCache.Members [".ctor"];
+ if (al.Count > 3)
+ MemberCache.VerifyClsParameterConflict (al, this, ConstructorBuilder);
+
+ if (Parent.TypeBuilder.IsSubclassOf (TypeManager.attribute_type)) {
+ foreach (Type param in ParameterTypes) {
+ if (param.IsArray) {
+ return true;
+ }
+ }
+ }
+ }
+ has_compliant_args = true;
+ return true;
+ }
+
+ #region IMethodData Members
+
+ public System.Reflection.CallingConventions CallingConventions {
+ get {
+ CallingConventions cc = Parameters.CallingConvention;
+
+ if (Parent.PartialContainer.Kind == Kind.Class)
+ if ((ModFlags & Modifiers.STATIC) == 0)
+ cc |= CallingConventions.HasThis;
+
+ // FIXME: How is `ExplicitThis' used in C#?
+
+ return cc;
+ }
+ }
+
+ public new Location Location {
+ get {
+ return base.Location;
+ }
+ }
+
+ public MemberName MethodName {
+ get {
+ return MemberName;
+ }
+ }
+
+ public Type ReturnType {
+ get {
+ return MemberType;
+ }
+ }
+
+ public EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
+ {
+ ILGenerator ig_ = ConstructorBuilder.GetILGenerator ();
+ return new EmitContext (this, Parent, Location, ig_, null, ModFlags, true);
+ }
+
+ public bool IsExcluded()
+ {
+ return false;
+ }
+
+ GenericMethod IMethodData.GenericMethod {
+ get {
+ return null;
+ }
+ }
+
+ #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; }
+ Parameters ParameterInfo { get; }
+
+ Iterator Iterator { get; }
+
+ Attributes OptAttributes { get; }
+ ToplevelBlock Block { get; set; }
+
+ EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
+ ObsoleteAttribute GetObsoleteAttribute ();
+ string GetSignatureForError ();
+ bool IsExcluded ();
+ bool IsClsComplianceRequired ();
+ void SetMemberIsUsed ();
+ }
+
+ //
+ // Encapsulates most of the Method's state
+ //
+ public class MethodData {
+
+ readonly IMethodData method;
+
+ public readonly GenericMethod GenericMethod;
+
+ //
+ // Are we implementing an interface ?
+ //
+ public MethodInfo implementing;
+
+ //
+ // Protected data.
+ //
+ protected MemberBase 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 (MemberBase member,
+ int modifiers, MethodAttributes flags, IMethodData method)
+ {
+ this.member = member;
+ this.modifiers = modifiers;
+ this.flags = flags;
+
+ this.method = method;
+ }
+
+ public MethodData (MemberBase 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 name = method.MethodName.Basename;
+ string method_name = method.MethodName.FullName;
+
+ TypeContainer container = parent.PartialContainer;
+
+ PendingImplementation pending = container.PendingImplementations;
+ if (pending != null){
+ if (member is Indexer) // TODO: test it, but it should work without this IF
+ implementing = pending.IsInterfaceIndexer (
+ member.InterfaceType, method.ReturnType, method.ParameterInfo);
+ else
+ implementing = pending.IsInterfaceMethod (
+ member.InterfaceType, name, method.ReturnType, method.ParameterInfo);
+
+ 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;
+ }
+
+ method_name = TypeManager.GetFullName (member.InterfaceType) +
+ '.' + method_name;
+ } else {
+ if (implementing != null) {
+ AbstractPropertyEventMethod prop_method = method as AbstractPropertyEventMethod;
+ if (prop_method == null) {
+ if (implementing.IsSpecialName) {
+ 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");
+ return false;
+ }
+ } 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 ((flags & MethodAttributes.MemberAccessMask) != MethodAttributes.Public){
+ if (TypeManager.IsInterfaceType (implementing.DeclaringType)){
+ //
+ // If this is an interface method implementation,
+ // check for public accessibility
+ //
+ 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;
+ }
+
+ EmitContext ec = method.CreateEmitContext (container, null);
+
+ DefineMethodBuilder (container, method_name, method.ParameterInfo.Types);
+
+ if (builder == null)
+ return false;
+
+ if (container.CurrentType != null)
+ declaring_type = container.CurrentType;
+ else
+ declaring_type = container.TypeBuilder;
+
+ if ((modifiers & Modifiers.UNSAFE) != 0)
+ builder.InitLocals = false;
+
+ if (implementing != null){
+ //
+ // clear the pending implemntation flag
+ //
+ if (member is Indexer) {
+ pending.ImplementIndexer (
+ member.InterfaceType, builder, method.ReturnType,
+ method.ParameterInfo, member.IsExplicitImpl);
+ } else
+ pending.ImplementMethod (
+ member.InterfaceType, name, method.ReturnType,
+ method.ParameterInfo, member.IsExplicitImpl);
+
+ if (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;
+
+ 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, Type[] ParameterTypes)
+ {
+ const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
+
+ if ((modifiers & extern_static) == extern_static) {
+
+ if (method.OptAttributes != null) {
+ Attribute dllimport_attribute = method.OptAttributes.Search (TypeManager.dllimport_type);
+ if (dllimport_attribute != null) {
+ flags |= MethodAttributes.PinvokeImpl;
+ builder = dllimport_attribute.DefinePInvokeMethod (
+ container.TypeBuilder, method_name, flags,
+ method.ReturnType, ParameterTypes);
+
+ return;
+ }
+ }
+
+ // for extern static method must be specified either DllImport attribute or MethodImplAttribute.
+ // We are more strict than Microsoft and report CS0626 like error
+ if (method.OptAttributes == null ||
+ !method.OptAttributes.Contains (TypeManager.methodimpl_attr_type)) {
+ Report.Error (626, method.Location, "Method, operator, or accessor `{0}' is marked external and has no attributes on it. Consider adding a DllImport attribute to specify the external implementation",
+ method.GetSignatureForError ());
+ return;
+ }
+ }
+
+ if (builder == null) {
+ builder = container.TypeBuilder.DefineMethod (
+ method_name, flags, method.CallingConventions,
+ method.ReturnType, ParameterTypes);
+ return;
+ }
+
+#if GMCS_SOURCE && !MS_COMPATIBLE
+ builder.SetGenericMethodSignature (
+ flags, method.CallingConventions,
+ method.ReturnType, ParameterTypes);
+#endif
+ }
+
+ //
+ // Emits the code
+ //
+ public void Emit (DeclSpace parent)
+ {
+ EmitContext ec;
+ if ((flags & MethodAttributes.PinvokeImpl) == 0)
+ ec = method.CreateEmitContext (parent, builder.GetILGenerator ());
+ else
+ ec = method.CreateEmitContext (parent, null);
+
+ method.ParameterInfo.ApplyAttributes (MethodBuilder);
+
+ if (GenericMethod != null)
+ GenericMethod.EmitAttributes ();
+
+ ToplevelBlock block = method.Block;
+
+ SourceMethod source = SourceMethod.Create (parent, MethodBuilder, method.Block);
+
+ //
+ // Handle destructors specially
+ //
+ // FIXME: This code generates buggy code
+ //
+ if (member is Destructor)
+ EmitDestructor (ec, block);
+ else
+ ec.EmitTopBlock (method, block);
+
+ if (source != null)
+ source.CloseMethod ();
+ }
+
+ void EmitDestructor (EmitContext ec, ToplevelBlock block)
+ {
+ ILGenerator ig = ec.ig;
+
+ Label finish = ig.DefineLabel ();
+
+ block.SetDestructor ();
+
+ ig.BeginExceptionBlock ();
+ ec.ReturnLabel = finish;
+ ec.HasReturnLabel = true;
+ ec.EmitTopBlock (method, block);
+
+ // ig.MarkLabel (finish);
+ ig.BeginFinallyBlock ();
+
+ if (ec.ContainerType.BaseType != null) {
+ Expression member_lookup = Expression.MemberLookup (
+ ec.ContainerType.BaseType, null, ec.ContainerType.BaseType,
+ "Finalize", MemberTypes.Method, Expression.AllBindingFlags, method.Location);
+
+ if (member_lookup != null){
+ MethodGroupExpr base_destructor = ((MethodGroupExpr) member_lookup);
+
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Call, (MethodInfo) base_destructor.Methods [0]);
+ }
+ }
+
+ ig.EndExceptionBlock ();
+ //ig.MarkLabel (ec.ReturnLabel);
+ ig.Emit (OpCodes.Ret);
+ }
+ }
+
+ // TODO: Should derive from MethodCore
+ public class Destructor : Method {
+
+ static string[] attribute_targets = new string [] { "method" };
+
+ public Destructor (DeclSpace parent, Expression return_type, int mod,
+ string name, Parameters parameters, Attributes attrs,
+ Location l)
+ : base (parent, null, return_type, mod, false, new MemberName (name, l),
+ parameters, attrs)
+ { }
+
+ public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.conditional_attribute_type) {
+ Error_ConditionalAttributeIsNotValid ();
+ return;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override string GetSignatureForError ()
+ {
+ return Parent.GetSignatureForError () + ".~" + Parent.MemberName.Name + "()";
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+ }
+
+ abstract public class MemberBase : MemberCore {
+ public Expression Type;
+
+ public MethodAttributes flags;
+ public readonly DeclSpace ds;
+ public readonly GenericMethod GenericMethod;
+
+ protected readonly int explicit_mod_flags;
+
+ //
+ // The "short" name of this property / indexer / event. This is the
+ // name without the explicit interface.
+ //
+ public string ShortName {
+ get { return MemberName.Name; }
+ set { SetMemberName (new MemberName (MemberName.Left, value, Location)); }
+ }
+
+ //
+ // The type of this property / indexer / event
+ //
+ protected Type member_type;
+ public Type MemberType {
+ get {
+ if (member_type == null && Type != null) {
+ IResolveContext rc = GenericMethod == null ? this : (IResolveContext)ds;
+ Type = Type.ResolveAsTypeTerminal (rc, false);
+ if (Type != null) {
+ member_type = Type.Type;
+ }
+ }
+ return member_type;
+ }
+ }
+
+ //
+ // Whether this is an interface member.
+ //
+ public bool IsInterface;
+
+ //
+ // If true, this is an explicit interface implementation
+ //
+ public bool IsExplicitImpl;
+
+ //
+ // The interface type we are explicitly implementing
+ //
+ public Type InterfaceType = null;
+
+ //
+ // The constructor is only exposed to our children
+ //
+ protected MemberBase (DeclSpace parent, GenericMethod generic,
+ Expression type, int mod, int allowed_mod, int def_mod,
+ MemberName name, Attributes attrs)
+ : base (parent, name, attrs)
+ {
+ this.ds = generic != null ? generic : (DeclSpace) parent;
+ explicit_mod_flags = mod;
+ Type = type;
+ ModFlags = Modifiers.Check (allowed_mod, mod, def_mod, Location);
+ IsExplicitImpl = (MemberName.Left != null);
+ GenericMethod = generic;
+ if (GenericMethod != null)
+ GenericMethod.ModFlags = ModFlags;
+ }
+
+ protected virtual bool CheckBase ()
+ {
+ if ((ModFlags & Modifiers.PROTECTED) != 0 && Parent.PartialContainer.Kind == Kind.Struct) {
+ Report.Error (666, Location, "`{0}': new protected member declared in struct", GetSignatureForError ());
+ return false;
+ }
+
+ if ((RootContext.WarningLevel >= 4) &&
+ ((Parent.ModFlags & Modifiers.SEALED) != 0) &&
+ ((ModFlags & Modifiers.PROTECTED) != 0) &&
+ ((ModFlags & Modifiers.OVERRIDE) == 0) && (Name != "Finalize")) {
+ Report.Warning (628, 4, Location, "`{0}': new protected member declared in sealed class", GetSignatureForError ());
+ }
+ return true;
+ }
+
+ protected virtual bool DoDefineBase ()
+ {
+ if (Name == null)
+ throw new InternalErrorException ();
+
+ if (IsInterface) {
+ ModFlags = Modifiers.PUBLIC |
+ Modifiers.ABSTRACT |
+ Modifiers.VIRTUAL | (ModFlags & Modifiers.UNSAFE) | (ModFlags & Modifiers.NEW);
+
+ flags = MethodAttributes.Public |
+ MethodAttributes.Abstract |
+ MethodAttributes.HideBySig |
+ MethodAttributes.NewSlot |
+ MethodAttributes.Virtual;
+ } else {
+ if (!Parent.PartialContainer.MethodModifiersValid (this))
+ return false;
+
+ flags = Modifiers.MethodAttr (ModFlags);
+ }
+
+ if (IsExplicitImpl) {
+ Expression expr = MemberName.Left.GetTypeExpression ();
+ TypeExpr iface_texpr = expr.ResolveAsTypeTerminal (this, false);
+ if (iface_texpr == null)
+ return false;
+
+ InterfaceType = iface_texpr.Type;
+
+ if (!InterfaceType.IsInterface) {
+ Report.Error (538, Location, "'{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
+ return false;
+ }
+
+ if (!Parent.PartialContainer.VerifyImplements (this))
+ return false;
+
+ Modifiers.Check (Modifiers.AllowedExplicitImplFlags, explicit_mod_flags, 0, Location);
+ }
+
+ return true;
+ }
+
+ protected virtual bool DoDefine ()
+ {
+ if (MemberType == null)
+ return false;
+
+ 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 ());
+ return false;
+ }
+
+ // verify accessibility
+ if (!Parent.AsAccessible (MemberType, ModFlags)) {
+ 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 () + "'");
+ }
+ return false;
+ }
+
+ if (IsExplicitImpl) {
+ Expression expr = MemberName.Left.GetTypeExpression ();
+ TypeExpr texpr = expr.ResolveAsTypeTerminal (this, false);
+ if (texpr == null)
+ return false;
+
+ InterfaceType = texpr.Type;
+
+ if (!InterfaceType.IsInterface) {
+ Report.Error (538, Location, "`{0}' in explicit interface declaration is not an interface", TypeManager.CSharpName (InterfaceType));
+ return false;
+ }
+
+ if (!Parent.PartialContainer.VerifyImplements (this))
+ return false;
+
+
+ }
+ return true;
+ }
+
+ protected bool IsTypePermitted ()
+ {
+ if (MemberType == TypeManager.arg_iterator_type || MemberType == TypeManager.typed_reference_type) {
+ Report.Error (610, Location, "Field or property cannot be of type `{0}'", TypeManager.CSharpName (MemberType));
+ return false;
+ }
+ return true;
+ }
+
+ protected override bool VerifyClsCompliance()
+ {
+ if (base.VerifyClsCompliance ()) {
+ if (GenericMethod != null)
+ GenericMethod.VerifyClsCompliance ();
+
+ return true;
+ }
+
+ if (IsInterface && HasClsCompliantAttribute && Parent.IsClsComplianceRequired ()) {
+ Report.Error (3010, Location, "`{0}': CLS-compliant interfaces must have only CLS-compliant members", GetSignatureForError ());
+ }
+ return false;
+ }
+
+ }
+
+ //
+ // Fields and Events both generate FieldBuilders, we use this to share
+ // their common bits. This is also used to flag usage of the field
+ //
+ abstract public class FieldBase : MemberBase {
+ public FieldBuilder FieldBuilder;
+ public Status status;
+ protected Expression initializer;
+ ExpressionStatement initializerStatement;
+
+ [Flags]
+ public enum Status : byte {
+ HAS_OFFSET = 4 // Used by FieldMember.
+ }
+
+ static string[] attribute_targets = new string [] { "field" };
+
+ /// <summary>
+ /// Symbol with same name in base class/struct
+ /// </summary>
+ public MemberInfo conflict_symbol;
+
+ protected FieldBase (DeclSpace parent, Expression type, int mod,
+ int allowed_mod, MemberName name, Attributes attrs)
+ : base (parent, null, type, mod, allowed_mod, Modifiers.PRIVATE,
+ name, attrs)
+ {
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Field;
+ }
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.marshal_as_attr_type) {
+ UnmanagedMarshal marshal = a.GetMarshal (this);
+ if (marshal != null) {
+ FieldBuilder.SetMarshal (marshal);
+ }
+ return;
+ }
+
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
+ a.Error_InvalidSecurityParent ();
+ return;
+ }
+
+ FieldBuilder.SetCustomAttribute (cb);
+ }
+
+ public void EmitInitializer (EmitContext ec)
+ {
+ initializerStatement.EmitStatement (ec);
+ }
+
+ protected override bool CheckBase ()
+ {
+ if (!base.CheckBase ())
+ return false;
+
+ // TODO: Implement
+ if (IsInterface)
+ return true;
+
+ conflict_symbol = Parent.PartialContainer.FindBaseMemberWithSameName (Name, false);
+ if (conflict_symbol == null) {
+ if ((RootContext.WarningLevel >= 4) && ((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)) == 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;
+ }
+
+ public Expression Initializer {
+ set {
+ if (value != null) {
+ this.initializer = value;
+ Parent.PartialContainer.RegisterFieldForInitialization (this);
+ }
+ }
+ }
+
+ protected virtual bool IsFieldClsCompliant {
+ get {
+ if (FieldBuilder == null)
+ return true;
+
+ return AttributeTester.IsClsCompliant (FieldBuilder.FieldType);
+ }
+ }
+
+ public Expression ResolveInitializer ()
+ {
+ // TODO: again it's too heavy-weight
+ EmitContext ec = new EmitContext (this, Parent, Location, null, null, ModFlags);
+ ec.IsFieldInitializer = true;
+ initializer = initializer.Resolve (ec);
+ if (initializer == null)
+ return null;
+ if (FieldBuilder == null)
+ return null;
+
+ FieldExpr fe = new FieldExpr (FieldBuilder, Location, true);
+ if ((ModFlags & Modifiers.STATIC) == 0)
+ {
+ fe.InstanceExpression = CompilerGeneratedThis.Instance;
+ }
+
+ initializerStatement = new Assign (fe, initializer, Location).ResolveStatement (ec);
+ return initializer;
+ }
+
+ public bool HasDefaultInitializer
+ {
+ get
+ {
+ Constant c = initializer as Constant;
+ if (c == null)
+ return false;
+
+ return c.IsDefaultInitializer (MemberType);
+ }
+ }
+
+ public override string[] ValidAttributeTargets
+ {
+ get {
+ return attribute_targets;
+ }
+ }
+
+ protected override bool VerifyClsCompliance ()
+ {
+ if (!base.VerifyClsCompliance ())
+ return false;
+
+ if (!IsFieldClsCompliant) {
+ Report.Error (3003, Location, "Type of `{0}' is not CLS-compliant", GetSignatureForError ());
+ }
+ return true;
+ }
+
+
+ public void SetAssigned ()
+ {
+ caching_flags |= Flags.IsAssigned;
+ }
+ }
+
+ public abstract class FieldMember : FieldBase
+ {
+ protected FieldMember (DeclSpace parent, Expression type, int mod,
+ int allowed_mod, MemberName name, Attributes attrs)
+ : base (parent, type, mod, allowed_mod | Modifiers.ABSTRACT, 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 void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.field_offset_attribute_type)
+ {
+ 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 == TypeManager.fixed_buffer_attr_type) {
+ Report.Error (1716, Location, "Do not use 'System.Runtime.CompilerServices.FixedBuffer' attribute. Use the 'fixed' field modifier instead");
+ return;
+ }
+#endif
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override bool Define()
+ {
+ if (MemberType == null || Type == null)
+ return false;
+
+ if (MemberType == TypeManager.void_type) {
+ // TODO: wrong location
+ Expression.Error_VoidInvalidInTheContext (Location);
+ return false;
+ }
+
+ if (MemberType.IsSealed && MemberType.IsAbstract) {
+ Error_VariableOfStaticClass (Location, GetSignatureForError (), MemberType);
+ return false;
+ }
+
+ if (!CheckBase ())
+ return false;
+
+ if (!Parent.AsAccessible (MemberType, ModFlags)) {
+ Report.Error (52, Location,
+ "Inconsistent accessibility: field type `" +
+ TypeManager.CSharpName (MemberType) + "' is less " +
+ "accessible than field `" + GetSignatureForError () + "'");
+ return false;
+ }
+
+ if (!IsTypePermitted ())
+ return false;
+
+ return true;
+ }
+
+ public override void Emit ()
+ {
+ if (OptAttributes != null) {
+ OptAttributes.Emit ();
+ }
+
+ if (((status & Status.HAS_OFFSET) == 0) && (ModFlags & Modifiers.STATIC) == 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 variableName, Type staticClass)
+ {
+ Report.SymbolRelatedToPreviousError (staticClass);
+ Report.Error (723, loc, "`{0}': cannot declare variables of static types",
+ variableName);
+ }
+
+ //
+ // Represents header string for documentation comment.
+ //
+ public override string DocCommentHeader {
+ get { return "F:"; }
+ }
+ }
+
+ 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 : FieldMember, 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;
+ int buffer_size;
+
+ const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
+ Modifiers.INTERNAL |
+ Modifiers.PRIVATE;
+
+ public FixedField (DeclSpace parent, Expression 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_1)
+ Report.FeatureIsNotStandardized (loc, "fixed size buffers");
+
+ this.size_expr = size_expr;
+ }
+
+ public override bool Define()
+ {
+#if !NET_2_0
+ if ((ModFlags & (Modifiers.PUBLIC | Modifiers.PROTECTED)) != 0)
+ Report.Warning (-23, 1, Location, "Only private or internal fixed sized buffers are supported by .NET 1.x");
+#endif
+
+ if (Parent.PartialContainer.Kind != Kind.Struct) {
+ Report.Error (1642, Location, "`{0}': Fixed size buffer fields may only be members of structs",
+ GetSignatureForError ());
+ return false;
+ }
+
+ 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 ());
+ return false;
+ }
+
+ EmitContext ec = new EmitContext (this, Parent, Location, null, null, ModFlags);
+ Constant c = size_expr.ResolveAsConstant (ec, this);
+ if (c == null)
+ return false;
+
+ IntConstant buffer_size_const = c.ToInt (Location);
+ if (buffer_size_const == null)
+ return false;
+
+ 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 false;
+ }
+
+ 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 false;
+ }
+
+ buffer_size *= type_size;
+
+ // Define nested
+ string name = String.Format ("<{0}>__FixedBuffer{1}", Name, GlobalCounter++);
+
+ fixed_buffer_type = Parent.TypeBuilder.DefineNestedType (name,
+ 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));
+ TypeManager.RegisterFieldBase (FieldBuilder, this);
+
+ return true;
+ }
+
+ public override void Emit()
+ {
+ if (fi == null)
+ fi = new FieldInfo [] { TypeManager.struct_layout_attribute_type.GetField ("Size") };
+
+ object[] fi_val = new object[1];
+ fi_val [0] = buffer_size;
+
+ CustomAttributeBuilder cab = new CustomAttributeBuilder (TypeManager.struct_layout_attribute_ctor,
+ ctor_args, fi, fi_val);
+ fixed_buffer_type.SetCustomAttribute (cab);
+
+#if NET_2_0
+ cab = new CustomAttributeBuilder (TypeManager.fixed_buffer_attr_ctor, new object[] { MemberType, buffer_size } );
+ FieldBuilder.SetCustomAttribute (cab);
+#endif
+ base.Emit ();
+ }
+
+ protected override bool IsFieldClsCompliant {
+ get {
+ return false;
+ }
+ }
+
+ #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 : FieldMember {
+ // <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, Expression type, int mod, string name,
+ Attributes attrs, Location loc)
+ : base (parent, type, mod, AllowedModifiers, new MemberName (name, loc),
+ attrs)
+ {
+ }
+
+ public override bool Define ()
+ {
+ if (!base.Define ())
+ return false;
+
+ if (RootContext.WarningLevel > 1){
+ Type ptype = Parent.TypeBuilder.BaseType;
+
+ // ptype is only null for System.Object while compiling corlib.
+ if (ptype != null){
+ TypeContainer.FindMembers (
+ ptype, MemberTypes.Method,
+ BindingFlags.Public |
+ BindingFlags.Static | BindingFlags.Instance,
+ System.Type.FilterName, Name);
+ }
+ }
+
+ if ((ModFlags & Modifiers.VOLATILE) != 0){
+ if (!MemberType.IsClass){
+ Type vt = MemberType;
+
+ if (TypeManager.IsEnumType (vt))
+ vt = TypeManager.EnumToUnderlying (MemberType);
+
+ if (!((vt == TypeManager.bool_type) ||
+ (vt == TypeManager.sbyte_type) ||
+ (vt == TypeManager.byte_type) ||
+ (vt == TypeManager.short_type) ||
+ (vt == TypeManager.ushort_type) ||
+ (vt == TypeManager.int32_type) ||
+ (vt == TypeManager.uint32_type) ||
+ (vt == TypeManager.char_type) ||
+ (vt == TypeManager.float_type) ||
+ (!vt.IsValueType))){
+ Report.Error (677, Location, "`{0}': A volatile field cannot be of the type `{1}'",
+ GetSignatureForError (), TypeManager.CSharpName (vt));
+ return false;
+ }
+ }
+
+ if ((ModFlags & Modifiers.READONLY) != 0){
+ Report.Error (678, Location, "`{0}': A field cannot be both volatile and readonly",
+ GetSignatureForError ());
+ return false;
+ }
+ }
+
+ FieldAttributes fa = Modifiers.FieldAttr (ModFlags);
+
+ if (Parent.PartialContainer.Kind == Kind.Struct &&
+ ((fa & FieldAttributes.Static) == 0) &&
+ MemberType == Parent.TypeBuilder &&
+ !TypeManager.IsBuiltinType (MemberType)){
+ Report.Error (523, Location, "Struct member `" + Parent.Name + "." + Name +
+ "' causes a cycle in the structure layout");
+ return false;
+ }
+
+ try {
+ FieldBuilder = Parent.TypeBuilder.DefineField (
+ Name, MemberType, Modifiers.FieldAttr (ModFlags));
+
+ TypeManager.RegisterFieldBase (FieldBuilder, this);
+ }
+ catch (ArgumentException) {
+ Report.Warning (-24, 1, Location, "The Microsoft runtime is unable to use [void|void*] as a field type, try using the Mono runtime.");
+ return false;
+ }
+
+ return true;
+ }
+
+ 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 : IAnonymousHost {
+ //
+ // 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 bool Yields;
+ public ArrayList AnonymousMethods;
+
+ public Accessor (ToplevelBlock b, int mod, Attributes attrs, Location loc)
+ {
+ Block = b;
+ Attributes = attrs;
+ Location = loc;
+ ModFlags = Modifiers.Check (AllowedModifiers, mod, 0, loc);
+ }
+
+ public void SetYields ()
+ {
+ Yields = true;
+ }
+
+ public void AddAnonymousMethod (AnonymousMethodExpression ame)
+ {
+ if (AnonymousMethods == null)
+ AnonymousMethods = new ArrayList ();
+ AnonymousMethods.Add (ame);
+ }
+ }
+
+ // 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 event 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 (MemberBase member, string prefix)
+ : base (member.Parent, SetupName (prefix, member, member.Location), null)
+ {
+ this.prefix = prefix;
+ IsDummy = true;
+ }
+
+ public AbstractPropertyEventMethod (MemberBase 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, MemberBase member, Location loc)
+ {
+ return new MemberName (member.MemberName.Left, prefix + member.ShortName, loc);
+ }
+
+ public void UpdateName (MemberBase member)
+ {
+ SetMemberName (SetupName (prefix, member, Location));
+ }
+
+ #region IMethodData Members
+
+ public abstract Iterator Iterator {
+ get;
+ }
+
+ 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 Parameters ParameterInfo { get ; }
+ public abstract Type ReturnType { get; }
+ public abstract EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig);
+
+ #endregion
+
+ public override void ApplyAttributeBuilder(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.cls_compliant_attribute_type || a.Type == TypeManager.obsolete_attribute_type ||
+ a.Type == TypeManager.conditional_attribute_type) {
+ 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.Type.IsSubclassOf (TypeManager.security_attr_type) && a.CheckSecurityActionValidity (false)) {
+ 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);
+ return;
+ }
+
+ ApplyToExtraTarget (a, cb);
+ }
+
+ virtual protected void ApplyToExtraTarget (Attribute a, CustomAttributeBuilder cb)
+ {
+ System.Diagnostics.Debug.Fail ("You forgot to define special attribute target handling");
+ }
+
+ public override bool Define()
+ {
+ throw new NotSupportedException ();
+ }
+
+ public void Emit (DeclSpace parent)
+ {
+ EmitMethod (parent);
+
+ 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;
+ }
+
+ protected virtual void EmitMethod (DeclSpace parent)
+ {
+ method_data.Emit (parent);
+ }
+
+ 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.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 (111, Location, TypeContainer.Error111, method.GetSignatureForError ());
+ return true;
+ }
+
+ public override bool IsUsed
+ {
+ get {
+ if (IsDummy)
+ return false;
+
+ return base.IsUsed;
+ }
+ }
+
+ public new Location Location {
+ get {
+ return base.Location;
+ }
+ }
+
+ //
+ // Represents header string for documentation comment.
+ //
+ public override string DocCommentHeader {
+ get { throw new InvalidOperationException ("Unexpected attempt to get doc comment from " + this.GetType () + "."); }
+ }
+
+ }
+
+ //
+ // Properties and Indexers both generate PropertyBuilders, we use this to share
+ // their common bits.
+ //
+ abstract public class PropertyBase : MethodCore {
+
+ public class GetMethod : PropertyMethod
+ {
+ static string[] attribute_targets = new string [] { "method", "return" };
+
+ public GetMethod (MethodCore method):
+ base (method, "get_")
+ {
+ }
+
+ public GetMethod (MethodCore method, Accessor accessor):
+ base (method, accessor, "get_")
+ {
+ }
+
+ public override MethodBuilder Define (DeclSpace parent)
+ {
+ base.Define (parent);
+
+ method_data = new MethodData (method, ModFlags, flags, this);
+
+ if (!method_data.Define (parent))
+ return null;
+
+ return method_data.MethodBuilder;
+ }
+
+ public override Type ReturnType {
+ get {
+ return method.MemberType;
+ }
+ }
+
+ public override Parameters ParameterInfo {
+ get {
+ return Parameters.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 Parameters parameters;
+
+ public SetMethod (MethodCore method):
+ base (method, "set_")
+ {
+ }
+
+ public SetMethod (MethodCore method, Accessor accessor):
+ base (method, accessor, "set_")
+ {
+ }
+
+ protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Target == AttributeTargets.Parameter) {
+ if (param_attr == null)
+ param_attr = new ImplicitParameter (method_data.MethodBuilder);
+
+ param_attr.ApplyAttributeBuilder (a, cb);
+ return;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override Parameters ParameterInfo {
+ get {
+ return parameters;
+ }
+ }
+
+ protected virtual void DefineParameters ()
+ {
+ parameters = new Parameters (
+ new Parameter[] { new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, Location) },
+ new Type[] { method.MemberType });
+ }
+
+ public override MethodBuilder Define (DeclSpace parent)
+ {
+ DefineParameters ();
+ if (IsDummy)
+ return null;
+
+ base.Define (parent);
+
+ method_data = new MethodData (method, ModFlags, flags, this);
+
+ if (!method_data.Define (parent))
+ 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 MethodCore method;
+ protected MethodAttributes flags;
+ Iterator iterator;
+ ArrayList anonymous_methods;
+ bool yields;
+
+ public PropertyMethod (MethodCore method, string prefix)
+ : base (method, prefix)
+ {
+ this.method = method;
+ }
+
+ public PropertyMethod (MethodCore method, Accessor accessor,
+ string prefix)
+ : base (method, accessor, prefix)
+ {
+ this.method = method;
+ this.ModFlags = accessor.ModFlags;
+ yields = accessor.Yields;
+ anonymous_methods = accessor.AnonymousMethods;
+
+ if (accessor.ModFlags != 0 && RootContext.Version == LanguageVersion.ISO_1) {
+ Report.FeatureIsNotStandardized (Location, "access modifiers on properties");
+ }
+ }
+
+ public override Iterator Iterator {
+ get { return iterator; }
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Method;
+ }
+ }
+
+ public override bool IsClsComplianceRequired ()
+ {
+ return method.IsClsComplianceRequired ();
+ }
+
+ public bool ResolveMembers ()
+ {
+ TypeContainer container = ((TypeContainer) Parent).PartialContainer;
+
+ if (yields) {
+ iterator = Iterator.CreateIterator (
+ this, container, null, ModFlags);
+
+ if (iterator == null)
+ return false;
+ }
+
+ if (anonymous_methods != null) {
+ foreach (AnonymousMethodExpression ame in anonymous_methods) {
+ if (!ame.CreateAnonymousHelpers ())
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public virtual MethodBuilder Define (DeclSpace parent)
+ {
+ if (!method.CheckAbstractAndExtern (block != null))
+ return null;
+
+ TypeContainer container = parent.PartialContainer;
+
+ //
+ // Check for custom access modifier
+ //
+ if (ModFlags == 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));
+ }
+
+ return null;
+ }
+
+ public bool HasCustomAccessModifier
+ {
+ get {
+ return (ModFlags & Modifiers.PROPERTY_CUSTOM) != 0;
+ }
+ }
+
+ public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
+ {
+ return new EmitContext (method,
+ 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)
+ {
+ 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 ());
+ }
+ }
+
+ public override bool MarkForDuplicationCheck ()
+ {
+ caching_flags |= Flags.TestMethodDuplication;
+ return true;
+ }
+ }
+
+ public PropertyMethod Get, Set;
+ public PropertyBuilder PropertyBuilder;
+ public MethodBuilder GetBuilder, SetBuilder;
+
+ protected EmitContext ec;
+
+ public PropertyBase (DeclSpace parent, Expression type, int mod_flags,
+ int allowed_mod, bool is_iface, MemberName name,
+ Parameters parameters, Attributes attrs)
+ : base (parent, null, type, mod_flags, allowed_mod, is_iface, name,
+ attrs, parameters)
+ {
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
+ a.Error_InvalidSecurityParent ();
+ return;
+ }
+
+ PropertyBuilder.SetCustomAttribute (cb);
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Property;
+ }
+ }
+
+ public override bool Define ()
+ {
+ if (!DoDefine ())
+ return false;
+
+ if (!IsTypePermitted ())
+ return false;
+
+ return true;
+ }
+
+ protected override bool DoDefine ()
+ {
+ if (!base.DoDefine ())
+ return false;
+
+ //
+ // Accessors modifiers check
+ //
+ if (Get.ModFlags != 0 && Set.ModFlags != 0) {
+ Report.Error (274, Location, "`{0}': Cannot specify accessibility modifiers for both accessors of the property or indexer",
+ GetSignatureForError ());
+ return false;
+ }
+
+ if ((Get.IsDummy || Set.IsDummy)
+ && (Get.ModFlags != 0 || Set.ModFlags != 0) && (ModFlags & Modifiers.OVERRIDE) == 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 ());
+ return false;
+ }
+
+ if (MemberType.IsAbstract && MemberType.IsSealed) {
+ Report.Error (722, Location, Error722, TypeManager.CSharpName (MemberType));
+ return false;
+ }
+
+ ec = new EmitContext (this, Parent, Location, null, MemberType, ModFlags);
+ return true;
+ }
+
+ protected override bool CheckForDuplications ()
+ {
+ ArrayList ar = Parent.PartialContainer.Indexers;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Indexer m = (Indexer) ar [i];
+ if (IsDuplicateImplementation (m))
+ return false;
+ }
+ }
+
+ ar = Parent.PartialContainer.Properties;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Property m = (Property) ar [i];
+ if (IsDuplicateImplementation (m))
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ // TODO: rename to Resolve......
+ protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
+ {
+ PropertyInfo base_property = Parent.PartialContainer.BaseCache.FindMemberToOverride (
+ Parent.TypeBuilder, Name, ParameterTypes, null, true) as PropertyInfo;
+
+ 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, set_accessor_access;
+
+ if ((ModFlags & Modifiers.OVERRIDE) != 0) {
+ if (Get != null && !Get.IsDummy && get_accessor == null) {
+ 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));
+ }
+
+ if (Set != null && !Set.IsDummy && set_accessor == null) {
+ 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));
+ }
+ }
+
+ //
+ // Check base class accessors access
+ //
+
+ // TODO: rewrite to reuse Get|Set.CheckAccessModifiers and share code there
+ get_accessor_access = set_accessor_access = 0;
+ if ((ModFlags & Modifiers.NEW) == 0) {
+ if (get_accessor != null) {
+ MethodAttributes get_flags = Modifiers.MethodAttr (Get.ModFlags != 0 ? Get.ModFlags : ModFlags);
+ get_accessor_access = (get_accessor.Attributes & MethodAttributes.MemberAccessMask);
+
+ if (!Get.IsDummy && !CheckAccessModifiers (get_flags & MethodAttributes.MemberAccessMask, get_accessor_access, get_accessor))
+ Error_CannotChangeAccessModifiers (get_accessor, get_accessor_access, ".get");
+ }
+
+ if (set_accessor != null) {
+ MethodAttributes set_flags = Modifiers.MethodAttr (Set.ModFlags != 0 ? Set.ModFlags : ModFlags);
+ set_accessor_access = (set_accessor.Attributes & MethodAttributes.MemberAccessMask);
+
+ if (!Set.IsDummy && !CheckAccessModifiers (set_flags & MethodAttributes.MemberAccessMask, set_accessor_access, set_accessor))
+ Error_CannotChangeAccessModifiers (set_accessor, set_accessor_access, ".set");
+ }
+ }
+
+ //
+ // 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 && OptAttributes != null)
+ OptAttributes.Emit ();
+
+ 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 {
+ 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.METHOD_YIELDS |
+ Modifiers.VIRTUAL;
+
+ const int AllowedInterfaceModifiers =
+ Modifiers.NEW;
+
+ public Property (DeclSpace parent, Expression type, int mod, bool is_iface,
+ MemberName name, Attributes attrs, Accessor get_block,
+ Accessor set_block)
+ : base (parent, type, mod,
+ is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
+ is_iface, name, Parameters.EmptyReadOnlyParameters, attrs)
+ {
+ 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);
+ }
+
+ public override bool Define ()
+ {
+ if (!DoDefineBase ())
+ return false;
+
+ if (!base.Define ())
+ return false;
+
+ if (!CheckBase ())
+ return false;
+
+ flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
+
+ if (!Get.IsDummy) {
+ GetBuilder = Get.Define (Parent);
+ if (GetBuilder == null)
+ return false;
+ }
+
+ SetBuilder = Set.Define (Parent);
+ if (!Set.IsDummy) {
+ if (SetBuilder == null)
+ return false;
+ }
+
+ // FIXME - PropertyAttributes.HasDefault ?
+
+ PropertyBuilder = Parent.TypeBuilder.DefineProperty (
+ MemberName.ToString (), PropertyAttributes.None, MemberType, null);
+
+ if (!Get.IsDummy)
+ PropertyBuilder.SetGetMethod (GetBuilder);
+
+ if (!Set.IsDummy)
+ PropertyBuilder.SetSetMethod (SetBuilder);
+
+ TypeManager.RegisterProperty (PropertyBuilder, this);
+ return true;
+ }
+ }
+
+ /// </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 {
+
+ static string[] attribute_targets = new string [] { "event" }; // "property" target was disabled for 2.0 version
+
+ public EventProperty (DeclSpace parent, Expression type, int mod_flags,
+ bool is_iface, MemberName name,
+ Attributes attrs, Accessor add, Accessor remove)
+ : base (parent, type, mod_flags, is_iface, name, attrs)
+ {
+ Add = new AddDelegateMethod (this, add);
+ Remove = new RemoveDelegateMethod (this, remove);
+
+ // For this event syntax we don't report error CS0067
+ // because it is hard to do it.
+ SetAssigned ();
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Event is declared like field.
+ /// </summary>
+ public class EventField : Event {
+
+ static string[] attribute_targets = new string [] { "event", "field", "method" };
+ static string[] attribute_targets_interface = new string[] { "event", "method" };
+
+ public EventField (DeclSpace parent, Expression type, int mod_flags,
+ bool is_iface, MemberName name,
+ Attributes attrs)
+ : base (parent, type, mod_flags, is_iface, name, attrs)
+ {
+ Add = new AddDelegateMethod (this);
+ Remove = new RemoveDelegateMethod (this);
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Target == AttributeTargets.Field) {
+ FieldBuilder.SetCustomAttribute (cb);
+ return;
+ }
+
+ if (a.Target == AttributeTargets.Method) {
+ int errors = Report.Errors;
+ Add.ApplyAttributeBuilder (a, cb);
+ if (errors == Report.Errors)
+ Remove.ApplyAttributeBuilder (a, cb);
+ return;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override bool Define()
+ {
+ if (!base.Define ())
+ return false;
+
+ if (initializer != null) {
+ if (((ModFlags & Modifiers.ABSTRACT) != 0)) {
+ Report.Error (74, Location, "`{0}': abstract event cannot have an initializer",
+ GetSignatureForError ());
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return IsInterface ? attribute_targets_interface : attribute_targets;
+ }
+ }
+ }
+
+ public abstract class Event : FieldBase {
+
+ protected sealed class AddDelegateMethod: DelegateMethod
+ {
+
+ public AddDelegateMethod (Event method):
+ base (method, "add_")
+ {
+ }
+
+ public AddDelegateMethod (Event method, Accessor accessor):
+ base (method, accessor, "add_")
+ {
+ }
+
+ protected override MethodInfo DelegateMethodInfo {
+ get {
+ return TypeManager.delegate_combine_delegate_delegate;
+ }
+ }
+
+ }
+
+ protected sealed class RemoveDelegateMethod: DelegateMethod
+ {
+ public RemoveDelegateMethod (Event method):
+ base (method, "remove_")
+ {
+ }
+
+ public RemoveDelegateMethod (Event method, Accessor accessor):
+ base (method, accessor, "remove_")
+ {
+ }
+
+ protected override MethodInfo DelegateMethodInfo {
+ get {
+ return TypeManager.delegate_remove_delegate_delegate;
+ }
+ }
+
+ }
+
+ public abstract class DelegateMethod : AbstractPropertyEventMethod
+ {
+ protected readonly Event method;
+ ImplicitParameter param_attr;
+
+ static string[] attribute_targets = new string [] { "method", "param", "return" };
+
+ public DelegateMethod (Event method, string prefix)
+ : base (method, prefix)
+ {
+ this.method = method;
+ }
+
+ public DelegateMethod (Event method, Accessor accessor, string prefix)
+ : base (method, accessor, prefix)
+ {
+ this.method = method;
+ }
+
+ public override Iterator Iterator {
+ get { return null; }
+ }
+
+ protected override void ApplyToExtraTarget(Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Target == AttributeTargets.Parameter) {
+ if (param_attr == null)
+ param_attr = new ImplicitParameter (method_data.MethodBuilder);
+
+ param_attr.ApplyAttributeBuilder (a, cb);
+ return;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Method;
+ }
+ }
+
+ public override bool IsClsComplianceRequired ()
+ {
+ return method.IsClsComplianceRequired ();
+ }
+
+ public MethodBuilder Define (DeclSpace parent)
+ {
+ method_data = new MethodData (method, method.ModFlags,
+ method.flags | MethodAttributes.HideBySig | MethodAttributes.SpecialName, this);
+
+ if (!method_data.Define (parent))
+ return null;
+
+ MethodBuilder mb = method_data.MethodBuilder;
+ ParameterInfo.ApplyAttributes (mb);
+ return mb;
+ }
+
+
+ protected override void EmitMethod (DeclSpace parent)
+ {
+ if (block != null) {
+ base.EmitMethod (parent);
+ return;
+ }
+
+ if ((method.ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
+ return;
+
+ ILGenerator ig = method_data.MethodBuilder.GetILGenerator ();
+ FieldInfo field_info = (FieldInfo)method.FieldBuilder;
+
+ method_data.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Synchronized);
+ if ((method.ModFlags & Modifiers.STATIC) != 0) {
+ ig.Emit (OpCodes.Ldsfld, field_info);
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Call, DelegateMethodInfo);
+ ig.Emit (OpCodes.Castclass, method.MemberType);
+ ig.Emit (OpCodes.Stsfld, field_info);
+ } else {
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Ldfld, field_info);
+ ig.Emit (OpCodes.Ldarg_1);
+ ig.Emit (OpCodes.Call, DelegateMethodInfo);
+ ig.Emit (OpCodes.Castclass, method.MemberType);
+ ig.Emit (OpCodes.Stfld, field_info);
+ }
+ ig.Emit (OpCodes.Ret);
+ }
+
+ protected abstract MethodInfo DelegateMethodInfo { get; }
+
+ public override Type ReturnType {
+ get {
+ return TypeManager.void_type;
+ }
+ }
+
+ public override EmitContext CreateEmitContext (DeclSpace ds, ILGenerator ig)
+ {
+ return new EmitContext (
+ ds, 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 Parameters 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;
+
+ const int AllowedInterfaceModifiers =
+ Modifiers.NEW;
+
+ public DelegateMethod Add, Remove;
+ public MyEventBuilder EventBuilder;
+ public MethodBuilder AddBuilder, RemoveBuilder;
+ Parameters parameters;
+
+ protected Event (DeclSpace parent, Expression type, int mod_flags,
+ bool is_iface, MemberName name, Attributes attrs)
+ : base (parent, type, mod_flags,
+ is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
+ name, attrs)
+ {
+ IsInterface = is_iface;
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
+ 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 ()
+ {
+ EventAttributes e_attr;
+ e_attr = EventAttributes.None;
+
+ if (!DoDefineBase ())
+ return false;
+
+ if (!DoDefine ())
+ return false;
+
+ if (!TypeManager.IsDelegateType (MemberType)) {
+ Report.Error (66, Location, "`{0}': event must be of a delegate type", GetSignatureForError ());
+ return false;
+ }
+
+ parameters = new Parameters (
+ new Parameter[] { new Parameter (MemberType, "value", Parameter.Modifier.NONE, null, Location) },
+ new Type[] { MemberType } );
+
+ if (!CheckBase ())
+ return false;
+
+ //
+ // 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, e_attr, MemberType);
+
+ if (Add.Block == null && Remove.Block == null && !IsInterface) {
+ FieldBuilder = Parent.TypeBuilder.DefineField (
+ Name, MemberType,
+ FieldAttributes.Private | ((ModFlags & Modifiers.STATIC) != 0 ? FieldAttributes.Static : 0));
+ TypeManager.RegisterPrivateFieldOfEvent (
+ (EventInfo) EventBuilder, FieldBuilder);
+ TypeManager.RegisterFieldBase (FieldBuilder, this);
+ }
+
+ EventBuilder.SetAddOnMethod (AddBuilder);
+ EventBuilder.SetRemoveOnMethod (RemoveBuilder);
+
+ TypeManager.RegisterEvent (EventBuilder, AddBuilder, RemoveBuilder);
+ return true;
+ }
+
+ protected override bool CheckBase ()
+ {
+ if (!base.CheckBase ())
+ return false;
+
+ if (conflict_symbol != null && (ModFlags & Modifiers.NEW) == 0) {
+ if (!(conflict_symbol is EventInfo)) {
+ Report.SymbolRelatedToPreviousError (conflict_symbol);
+ Report.Error (72, Location, "Event `{0}' can override only event", GetSignatureForError ());
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public override void Emit ()
+ {
+ if (OptAttributes != null) {
+ OptAttributes.Emit ();
+ }
+
+ Add.Emit (Parent);
+ Remove.Emit (Parent);
+
+ base.Emit ();
+ }
+
+ public override string GetSignatureForError ()
+ {
+ return base.GetSignatureForError ();
+ }
+
+ //
+ // Represents header string for documentation comment.
+ //
+ public override string DocCommentHeader {
+ get { return "E:"; }
+ }
+ }
+
+
+ public class Indexer : PropertyBase {
+
+ class GetIndexerMethod : GetMethod
+ {
+ public GetIndexerMethod (MethodCore method):
+ base (method)
+ {
+ }
+
+ public GetIndexerMethod (MethodCore method, Accessor accessor):
+ base (method, accessor)
+ {
+ }
+
+ public override Parameters ParameterInfo {
+ get {
+ return method.ParameterInfo;
+ }
+ }
+ }
+
+ class SetIndexerMethod: SetMethod
+ {
+ public SetIndexerMethod (MethodCore method):
+ base (method)
+ {
+ }
+
+ public SetIndexerMethod (MethodCore method, Accessor accessor):
+ base (method, accessor)
+ {
+ }
+
+ protected override void DefineParameters ()
+ {
+ parameters = Parameters.MergeGenerated (method.Parameters,
+ new Parameter (method.MemberType, "value", Parameter.Modifier.NONE, null, method.Location));
+ }
+ }
+
+ 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 Indexer (DeclSpace parent, Expression type, MemberName name, int mod,
+ bool is_iface, Parameters parameters, Attributes attrs,
+ Accessor get_block, Accessor set_block)
+ : base (parent, type, mod,
+ is_iface ? AllowedInterfaceModifiers : AllowedModifiers,
+ is_iface, name, parameters, attrs)
+ {
+ 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);
+ }
+
+ public override bool Define ()
+ {
+ if (!DoDefineBase ())
+ return false;
+
+ if (!base.Define ())
+ return false;
+
+ if (MemberType == TypeManager.void_type) {
+ Report.Error (620, Location, "Indexers cannot have void type");
+ return false;
+ }
+
+ if (OptAttributes != null) {
+ Attribute indexer_attr = OptAttributes.Search (TypeManager.indexer_name_type);
+ 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;
+
+ if (!CheckBase ())
+ return false;
+
+ flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
+ if (!Get.IsDummy){
+ GetBuilder = Get.Define (Parent);
+ if (GetBuilder == null)
+ return false;
+
+ //
+ // Setup iterator if we are one
+ //
+ if ((ModFlags & Modifiers.METHOD_YIELDS) != 0){
+ Iterator iterator = Iterator.CreateIterator (
+ Get, (TypeContainer) Parent, null, ModFlags);
+
+ if (iterator == null)
+ return false;
+ }
+ }
+
+ SetBuilder = Set.Define (Parent);
+ if (!Set.IsDummy){
+ if (SetBuilder == null)
+ return false;
+ }
+
+ //
+ // Now name the parameters
+ //
+ Parameter [] p = Parameters.FixedParameters;
+ if (p != null) {
+ // TODO: should be done in parser and it needs to do cycle
+ if ((p [0].ModFlags & Parameter.Modifier.ISBYREF) != 0) {
+ Report.Error (631, Location, "ref and out are not valid in this context");
+ return false;
+ }
+ }
+
+ PropertyBuilder = Parent.TypeBuilder.DefineProperty (
+ Name, PropertyAttributes.None, MemberType, ParameterTypes);
+
+ if (!Get.IsDummy)
+ PropertyBuilder.SetGetMethod (GetBuilder);
+
+ if (!Set.IsDummy)
+ PropertyBuilder.SetSetMethod (SetBuilder);
+
+ TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder, ParameterTypes);
+
+ return true;
+ }
+
+ public override string GetSignatureForError ()
+ {
+ StringBuilder sb = new StringBuilder (Parent.GetSignatureForError ());
+ if (MemberName.Left != null) {
+ sb.Append ('.');
+ sb.Append (MemberName.Left);
+ }
+
+ sb.Append (".this");
+ sb.Append (Parameters.GetSignatureForError ().Replace ('(', '[').Replace (')', ']'));
+ return sb.ToString ();
+ }
+
+ public override bool MarkForDuplicationCheck ()
+ {
+ caching_flags |= Flags.TestMethodDuplication;
+ return true;
+ }
+ }
+
+ public class Operator : MethodOrOperator, IAnonymousHost {
+
+ 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;
+
+ public Operator (DeclSpace parent, OpType type, Expression ret_type,
+ int mod_flags, Parameters parameters,
+ ToplevelBlock block, Attributes attrs, Location loc)
+ : base (parent, null, ret_type, mod_flags, AllowedModifiers, false,
+ new MemberName ("op_" + type, loc), attrs, parameters)
+ {
+ OperatorType = type;
+ Block = block;
+ }
+
+ public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ {
+ if (a.Type == TypeManager.conditional_attribute_type) {
+ Error_ConditionalAttributeIsNotValid ();
+ return;
+ }
+
+ base.ApplyAttributeBuilder (a, cb);
+ }
+
+ protected override bool CheckForDuplications ()
+ {
+ ArrayList ar = Parent.PartialContainer.Operators;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Operator o = (Operator) ar [i];
+ if (IsDuplicateImplementation (o))
+ return false;
+ }
+ }
+
+ ar = Parent.PartialContainer.Methods;
+ if (ar != null) {
+ int arLen = ar.Count;
+
+ for (int i = 0; i < arLen; i++) {
+ Method m = (Method) ar [i];
+ if (IsDuplicateImplementation (m))
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ 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 ());
+ return false;
+ }
+
+ if (!base.Define ())
+ return false;
+
+ if (MemberType == TypeManager.void_type) {
+ Report.Error (590, Location, "User-defined operators cannot return void");
+ return false;
+ }
+
+ Type declaring_type = MethodData.DeclaringType;
+ Type return_type = MemberType;
+ Type first_arg_type = ParameterTypes [0];
+
+ // Rules for conversion operators
+
+ if (OperatorType == OpType.Implicit || OperatorType == OpType.Explicit) {
+ if (first_arg_type == return_type && first_arg_type == 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;
+ }
+
+ if ((first_arg_type != declaring_type) && (return_type != declaring_type) &&
+ !TypeManager.IsNullableTypeOf (first_arg_type, declaring_type) &&
+ !TypeManager.IsNullableTypeOf (return_type, declaring_type)) {
+ Report.Error (
+ 556, Location,
+ "User-defined conversion must convert to or from the " +
+ "enclosing type");
+ return false;
+ }
+
+ if (first_arg_type.IsInterface || return_type.IsInterface){
+ Report.Error (552, Location, "User-defined conversion `{0}' cannot convert to or from an interface type",
+ GetSignatureForError ());
+ return false;
+ }
+
+ if (first_arg_type.IsSubclassOf (return_type) || return_type.IsSubclassOf (first_arg_type)) {
+ if (declaring_type.IsSubclassOf (return_type) || declaring_type.IsSubclassOf (first_arg_type)) {
+ Report.Error (553, Location, "User-defined conversion `{0}' cannot convert to or from base class",
+ GetSignatureForError ());
+ return false;
+ }
+ Report.Error (554, Location, "User-defined conversion `{0}' cannot convert to or from derived class",
+ GetSignatureForError ());
+ return false;
+ }
+ } else if (OperatorType == OpType.LeftShift || OperatorType == OpType.RightShift) {
+ if (first_arg_type != declaring_type || ParameterTypes [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 (first_arg_type != declaring_type){
+ Report.Error (
+ 562, Location,
+ "The parameter 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 &&
+ ParameterTypes [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 DoDefine ()
+ {
+ if (!base.DoDefine ())
+ return false;
+
+ flags |= MethodAttributes.SpecialName | MethodAttributes.HideBySig;
+ return true;
+ }
+
+ public override void Emit ()
+ {
+ base.Emit ();
+
+ Parameters.ApplyAttributes (MethodBuilder);
+
+ //
+ // abstract or extern methods have no bodies
+ //
+ if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
+ return;
+
+ EmitContext ec;
+ if ((flags & MethodAttributes.PinvokeImpl) == 0)
+ ec = CreateEmitContext (Parent, MethodBuilder.GetILGenerator ());
+ else
+ ec = CreateEmitContext (Parent, null);
+
+ SourceMethod source = SourceMethod.Create (Parent, MethodBuilder, Block);
+ ec.EmitTopBlock (this, Block);
+
+ if (source != null)
+ source.CloseMethod ();
+
+ Block = null;
+ }
+
+ // Operator cannot be override
+ protected override MethodInfo FindOutBaseMethod (ref Type base_ret_type)
+ {
+ return null;
+ }
+
+ public static string GetName (OpType ot)
+ {
+ switch (ot){
+ case OpType.LogicalNot:
+ return "!";
+ case OpType.OnesComplement:
+ return "~";
+ case OpType.Increment:
+ return "++";
+ case OpType.Decrement:
+ return "--";
+ case OpType.True:
+ return "true";
+ case OpType.False:
+ return "false";
+ case OpType.Addition:
+ return "+";
+ case OpType.Subtraction:
+ return "-";
+ case OpType.UnaryPlus:
+ return "+";
+ case OpType.UnaryNegation:
+ return "-";
+ case OpType.Multiply:
+ return "*";
+ case OpType.Division:
+ return "/";
+ case OpType.Modulus:
+ return "%";
+ case OpType.BitwiseAnd:
+ return "&";
+ case OpType.BitwiseOr:
+ return "|";
+ case OpType.ExclusiveOr:
+ return "^";
+ case OpType.LeftShift:
+ return "<<";
+ case OpType.RightShift:
+ return ">>";
+ case OpType.Equality:
+ return "==";
+ case OpType.Inequality:
+ return "!=";
+ case OpType.GreaterThan:
+ return ">";
+ case OpType.LessThan:
+ return "<";
+ case OpType.GreaterThanOrEqual:
+ return ">=";
+ case OpType.LessThanOrEqual:
+ return "<=";
+ case OpType.Implicit:
+ return "implicit";
+ case OpType.Explicit:
+ return "explicit";
+ default: return "";
+ }
+ }
+
+ public static OpType GetOperatorType (string name)
+ {
+ if (name.StartsWith ("op_")){
+ for (int i = 0; i < Unary.oper_names.Length; ++i) {
+ if (Unary.oper_names [i] == name)
+ return (OpType)i;
+ }
+
+ for (int i = 0; i < Binary.oper_names.Length; ++i) {
+ if (Binary.oper_names [i] == name)
+ return (OpType)i;
+ }
+ }
+ 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.Type == null ? Type.ToString () : TypeManager.CSharpName (Type.Type));
+ }
+ 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 (ReturnType != sig.RetType)
+ return false;
+
+ Type [] args;
+ if (mi != null)
+ args = TypeManager.GetParameterData (mi).Types;
+ else
+ args = TypeManager.GetArgumentTypes (pi);
+ Type [] sigp = sig.Parameters;
+
+ if (args.Length != sigp.Length)
+ return false;
+
+ for (int i = args.Length; i > 0; ){
+ i--;
+ if (args [i] != sigp [i])
+ return false;
+ }
+ return true;
+ }
+ }
+}
projects / mono.git / commitdiff