2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
7 // Licensed under the terms of the GNU GPL
9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
14 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
15 // the behavior of the compilation. This can be removed if we rework
16 // the code to get a list of namespaces available.
18 #define SIMPLE_SPEEDUP
22 using System.Globalization;
23 using System.Collections;
24 using System.Reflection;
25 using System.Reflection.Emit;
27 using System.Text.RegularExpressions;
28 using System.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
33 public class TypeManager {
35 // A list of core types that the compiler requires or uses
37 static public Type object_type;
38 static public Type value_type;
39 static public Type string_type;
40 static public Type int32_type;
41 static public Type uint32_type;
42 static public Type int64_type;
43 static public Type uint64_type;
44 static public Type float_type;
45 static public Type double_type;
46 static public Type char_type;
47 static public Type char_ptr_type;
48 static public Type short_type;
49 static public Type decimal_type;
50 static public Type bool_type;
51 static public Type sbyte_type;
52 static public Type byte_type;
53 static public Type ushort_type;
54 static public Type enum_type;
55 static public Type delegate_type;
56 static public Type multicast_delegate_type;
57 static public Type void_type;
58 static public Type enumeration_type;
59 static public Type array_type;
60 static public Type runtime_handle_type;
61 static public Type icloneable_type;
62 static public Type type_type;
63 static public Type ienumerator_type;
64 static public Type ienumerable_type;
65 static public Type idisposable_type;
66 static public Type default_member_type;
67 static public Type iasyncresult_type;
68 static public Type asynccallback_type;
69 static public Type intptr_type;
70 static public Type monitor_type;
71 static public Type runtime_field_handle_type;
72 static public Type attribute_type;
73 static public Type attribute_usage_type;
74 static public Type dllimport_type;
75 static public Type unverifiable_code_type;
76 static public Type methodimpl_attr_type;
77 static public Type marshal_as_attr_type;
78 static public Type param_array_type;
79 static public Type guid_attr_type;
80 static public Type void_ptr_type;
81 static public Type indexer_name_type;
82 static public Type exception_type;
83 static public Type invalid_operation_exception_type;
84 static public object obsolete_attribute_type;
85 static public object conditional_attribute_type;
86 static public Type in_attribute_type;
89 // An empty array of types
91 static public Type [] NoTypes;
92 static public TypeExpr [] NoTypeExprs;
96 // Expressions representing the internal types. Used during declaration
99 static public TypeExpr system_object_expr, system_string_expr;
100 static public TypeExpr system_boolean_expr, system_decimal_expr;
101 static public TypeExpr system_single_expr, system_double_expr;
102 static public TypeExpr system_sbyte_expr, system_byte_expr;
103 static public TypeExpr system_int16_expr, system_uint16_expr;
104 static public TypeExpr system_int32_expr, system_uint32_expr;
105 static public TypeExpr system_int64_expr, system_uint64_expr;
106 static public TypeExpr system_char_expr, system_void_expr;
107 static public TypeExpr system_asynccallback_expr;
108 static public TypeExpr system_iasyncresult_expr;
109 static public TypeExpr system_valuetype_expr;
112 // This is only used when compiling corlib
114 static public Type system_int32_type;
115 static public Type system_array_type;
116 static public Type system_type_type;
117 static public Type system_assemblybuilder_type;
118 static public MethodInfo system_int_array_get_length;
119 static public MethodInfo system_int_array_get_rank;
120 static public MethodInfo system_object_array_clone;
121 static public MethodInfo system_int_array_get_length_int;
122 static public MethodInfo system_int_array_get_lower_bound_int;
123 static public MethodInfo system_int_array_get_upper_bound_int;
124 static public MethodInfo system_void_array_copyto_array_int;
128 // Internal, not really used outside
130 static Type runtime_helpers_type;
133 // These methods are called by code generated by the compiler
135 static public MethodInfo string_concat_string_string;
136 static public MethodInfo string_concat_string_string_string;
137 static public MethodInfo string_concat_string_string_string_string;
138 static public MethodInfo string_concat_object_object;
139 static public MethodInfo string_isinterneted_string;
140 static public MethodInfo system_type_get_type_from_handle;
141 static public MethodInfo object_getcurrent_void;
142 static public MethodInfo bool_movenext_void;
143 static public MethodInfo ienumerable_getenumerator_void;
144 static public MethodInfo void_reset_void;
145 static public MethodInfo void_dispose_void;
146 static public MethodInfo void_monitor_enter_object;
147 static public MethodInfo void_monitor_exit_object;
148 static public MethodInfo void_initializearray_array_fieldhandle;
149 static public MethodInfo int_getlength_int;
150 static public MethodInfo delegate_combine_delegate_delegate;
151 static public MethodInfo delegate_remove_delegate_delegate;
152 static public MethodInfo int_get_offset_to_string_data;
153 static public MethodInfo int_array_get_length;
154 static public MethodInfo int_array_get_rank;
155 static public MethodInfo object_array_clone;
156 static public MethodInfo int_array_get_length_int;
157 static public MethodInfo int_array_get_lower_bound_int;
158 static public MethodInfo int_array_get_upper_bound_int;
159 static public MethodInfo void_array_copyto_array_int;
162 // The attribute constructors.
164 static public ConstructorInfo object_ctor;
165 static public ConstructorInfo cons_param_array_attribute;
166 static public ConstructorInfo void_decimal_ctor_five_args;
167 static public ConstructorInfo unverifiable_code_ctor;
168 static public ConstructorInfo invalid_operation_ctor;
171 // Holds the Array of Assemblies that have been loaded
172 // (either because it is the default or the user used the
173 // -r command line option)
175 static Assembly [] assemblies;
178 // Keeps a list of module builders. We used this to do lookups
179 // on the modulebuilder using GetType -- needed for arrays
181 static ModuleBuilder [] modules;
184 // This is the type_cache from the assemblies to avoid
185 // hitting System.Reflection on every lookup.
187 static Hashtable types;
190 // This is used to hotld the corresponding TypeContainer objects
191 // since we need this in FindMembers
193 static Hashtable typecontainers;
196 // Keeps track of those types that are defined by the
199 static ArrayList user_types;
201 static PtrHashtable builder_to_declspace;
204 // Tracks the interfaces implemented by typebuilders. We only
205 // enter those who do implement or or more interfaces
207 static PtrHashtable builder_to_ifaces;
210 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
211 // the arguments to the method
213 static Hashtable method_arguments;
216 // Maps PropertyBuilder to a Type array that contains
217 // the arguments to the indexer
219 static Hashtable indexer_arguments;
222 // Maybe `method_arguments' should be replaced and only
223 // method_internal_params should be kept?
225 static Hashtable method_internal_params;
228 // Keeps track of attribute types
231 static Hashtable builder_to_attr;
234 // Keeps track of methods
237 static Hashtable builder_to_method;
245 /// A filter for Findmembers that uses the Signature object to
248 static bool SignatureFilter (MemberInfo mi, object criteria)
250 Signature sig = (Signature) criteria;
252 if (!(mi is MethodBase))
255 if (mi.Name != sig.name)
258 int count = sig.args.Length;
260 if (mi is MethodBuilder || mi is ConstructorBuilder){
261 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
263 if (candidate_args.Length != count)
266 for (int i = 0; i < count; i++)
267 if (candidate_args [i] != sig.args [i])
272 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
274 if (pars.Length != count)
277 for (int i = 0; i < count; i++)
278 if (pars [i].ParameterType != sig.args [i])
284 // A delegate that points to the filter above.
285 static MemberFilter signature_filter;
288 // These are expressions that represent some of the internal data types, used
291 static void InitExpressionTypes ()
293 system_object_expr = new TypeLookupExpression ("System.Object");
294 system_string_expr = new TypeLookupExpression ("System.String");
295 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
296 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
297 system_single_expr = new TypeLookupExpression ("System.Single");
298 system_double_expr = new TypeLookupExpression ("System.Double");
299 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
300 system_byte_expr = new TypeLookupExpression ("System.Byte");
301 system_int16_expr = new TypeLookupExpression ("System.Int16");
302 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
303 system_int32_expr = new TypeLookupExpression ("System.Int32");
304 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
305 system_int64_expr = new TypeLookupExpression ("System.Int64");
306 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
307 system_char_expr = new TypeLookupExpression ("System.Char");
308 system_void_expr = new TypeLookupExpression ("System.Void");
309 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
310 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
311 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
314 static TypeManager ()
316 assemblies = new Assembly [0];
318 user_types = new ArrayList ();
320 types = new Hashtable ();
321 typecontainers = new Hashtable ();
323 builder_to_declspace = new PtrHashtable ();
324 builder_to_attr = new PtrHashtable ();
325 builder_to_method = new PtrHashtable ();
326 method_arguments = new PtrHashtable ();
327 method_internal_params = new PtrHashtable ();
328 indexer_arguments = new PtrHashtable ();
329 builder_to_ifaces = new PtrHashtable ();
331 NoTypes = new Type [0];
332 NoTypeExprs = new TypeExpr [0];
334 signature_filter = new MemberFilter (SignatureFilter);
335 InitExpressionTypes ();
338 public static void HandleDuplicate (string name, Type t)
340 Type prev = (Type) types [name];
341 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
345 // This probably never happens, as we catch this before
347 Report.Error (-17, "The type `" + name + "' has already been defined.");
351 tc = builder_to_declspace [t] as TypeContainer;
354 1595, "The type `" + name + "' is defined in an existing assembly;"+
355 " Using the new definition from: " + tc.Location);
358 1595, "The type `" + name + "' is defined in an existing assembly;");
361 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
367 public static void AddUserType (string name, TypeBuilder t, TypeExpr[] ifaces)
372 HandleDuplicate (name, t);
377 builder_to_ifaces [t] = ifaces;
381 // This entry point is used by types that we define under the covers
383 public static void RegisterBuilder (TypeBuilder tb, TypeExpr [] ifaces)
386 builder_to_ifaces [tb] = ifaces;
389 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, TypeExpr [] ifaces)
391 builder_to_declspace.Add (t, tc);
392 typecontainers.Add (name, tc);
393 AddUserType (name, t, ifaces);
396 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
401 HandleDuplicate (name, t);
404 builder_to_declspace.Add (t, del);
407 public static void AddEnumType (string name, TypeBuilder t, Enum en)
412 HandleDuplicate (name, t);
414 builder_to_declspace.Add (t, en);
417 public static void AddUserInterface (string name, TypeBuilder t, Interface i, TypeExpr [] ifaces)
419 AddUserType (name, t, ifaces);
420 builder_to_declspace.Add (t, i);
423 public static void AddMethod (MethodBuilder builder, MethodData method)
425 builder_to_method.Add (builder, method);
428 public static void RegisterAttrType (Type t, TypeContainer tc)
430 builder_to_attr.Add (t, tc);
434 /// Returns the DeclSpace whose Type is `t' or null if there is no
435 /// DeclSpace for `t' (ie, the Type comes from a library)
437 public static DeclSpace LookupDeclSpace (Type t)
439 return builder_to_declspace [t] as DeclSpace;
443 /// Returns the TypeContainer whose Type is `t' or null if there is no
444 /// TypeContainer for `t' (ie, the Type comes from a library)
446 public static TypeContainer LookupTypeContainer (Type t)
448 return builder_to_declspace [t] as TypeContainer;
451 public static IMemberContainer LookupMemberContainer (Type t)
453 if (t is TypeBuilder) {
454 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
455 if (container != null)
459 return TypeHandle.GetTypeHandle (t);
462 public static Interface LookupInterface (Type t)
464 return builder_to_declspace [t] as Interface;
467 public static Delegate LookupDelegate (Type t)
469 return builder_to_declspace [t] as Delegate;
472 public static Enum LookupEnum (Type t)
474 return builder_to_declspace [t] as Enum;
477 public static TypeContainer LookupAttr (Type t)
479 return (TypeContainer) builder_to_attr [t];
483 /// Registers an assembly to load types from.
485 public static void AddAssembly (Assembly a)
487 int top = assemblies.Length;
488 Assembly [] n = new Assembly [top + 1];
490 assemblies.CopyTo (n, 0);
497 /// Registers a module builder to lookup types from
499 public static void AddModule (ModuleBuilder mb)
501 int top = modules != null ? modules.Length : 0;
502 ModuleBuilder [] n = new ModuleBuilder [top + 1];
505 modules.CopyTo (n, 0);
510 static Hashtable references = new Hashtable ();
513 // Gets the reference to T version of the Type (T&)
515 public static Type GetReferenceType (Type t)
517 string tname = t.FullName + "&";
519 Type ret = t.Assembly.GetType (tname);
522 // If the type comes from the assembly we are building
523 // We need the Hashtable, because .NET 1.1 will return different instance types
524 // every time we call ModuleBuilder.GetType.
527 if (references [t] == null)
528 references [t] = CodeGen.ModuleBuilder.GetType (tname);
529 ret = (Type) references [t];
535 static Hashtable pointers = new Hashtable ();
538 // Gets the pointer to T version of the Type (T*)
540 public static Type GetPointerType (Type t)
542 string tname = t.FullName + "*";
544 Type ret = t.Assembly.GetType (tname);
547 // If the type comes from the assembly we are building
548 // We need the Hashtable, because .NET 1.1 will return different instance types
549 // every time we call ModuleBuilder.GetType.
552 if (pointers [t] == null)
553 pointers [t] = CodeGen.ModuleBuilder.GetType (tname);
555 ret = (Type) pointers [t];
562 // Low-level lookup, cache-less
564 static Type LookupTypeReflection (string name)
568 foreach (Assembly a in assemblies){
569 t = a.GetType (name);
574 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
575 if (ta == TypeAttributes.NotPublic ||
576 ta == TypeAttributes.NestedPrivate ||
577 ta == TypeAttributes.NestedAssembly ||
578 ta == TypeAttributes.NestedFamANDAssem){
581 // In .NET pointers turn out to be private, even if their
582 // element type is not
585 t = t.GetElementType ();
595 foreach (ModuleBuilder mb in modules) {
596 t = mb.GetType (name);
604 static Hashtable negative_hits = new Hashtable ();
607 // This function is used when you want to avoid the lookups, and want to go
608 // directly to the source. This will use the cache.
610 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
611 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
612 // way to test things other than doing a fullname compare
614 public static Type LookupTypeDirect (string name)
616 Type t = (Type) types [name];
620 t = LookupTypeReflection (name);
629 /// Returns the Type associated with @name, takes care of the fact that
630 /// reflection expects nested types to be separated from the main type
631 /// with a "+" instead of a "."
633 public static Type LookupType (string name)
638 // First lookup in user defined and cached values
641 t = (Type) types [name];
645 // Two thirds of the failures are caught here.
646 if (negative_hits.Contains (name))
649 string [] elements = name.Split ('.');
650 int count = elements.Length;
652 for (int n = 1; n <= count; n++){
653 string top_level_type = String.Join (".", elements, 0, n);
655 // One third of the failures are caught here.
656 if (negative_hits.Contains (top_level_type))
659 t = (Type) types [top_level_type];
661 t = LookupTypeReflection (top_level_type);
663 negative_hits [top_level_type] = true;
674 // We know that System.Object does not have children, and since its the parent of
675 // all the objects, it always gets probbed for inner classes.
677 if (top_level_type == "System.Object")
680 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
681 //Console.WriteLine ("Looking up: " + newt + " " + name);
682 t = LookupTypeReflection (newt);
684 negative_hits [name] = true;
689 negative_hits [name] = true;
694 /// Computes the namespaces that we import from the assemblies we reference.
696 public static void ComputeNamespaces ()
698 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
701 // First add the assembly namespaces
703 if (assembly_get_namespaces != null){
704 int count = assemblies.Length;
706 for (int i = 0; i < count; i++){
707 Assembly a = assemblies [i];
708 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
709 foreach (string ns in namespaces){
712 Namespace.LookupNamespace (ns, true);
716 foreach (Assembly a in assemblies){
717 foreach (Type t in a.GetTypes ()){
718 string ns = t.Namespace;
720 // t.Namespace returns null for <PrivateImplDetails>
721 if (ns == ""|| ns == null)
723 Namespace.LookupNamespace (ns, true);
729 public static bool NamespaceClash (string name, Location loc)
731 if (Namespace.LookupNamespace (name, false) == null)
734 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
739 /// Returns the C# name of a type if possible, or the full type name otherwise
741 static public string CSharpName (Type t)
743 return Regex.Replace (t.FullName,
745 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
746 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
747 @"Boolean|String|Void)" +
749 new MatchEvaluator (CSharpNameMatch));
752 static String CSharpNameMatch (Match match)
754 string s = match.Groups [1].Captures [0].Value;
756 Replace ("int32", "int").
757 Replace ("uint32", "uint").
758 Replace ("int16", "short").
759 Replace ("uint16", "ushort").
760 Replace ("int64", "long").
761 Replace ("uint64", "ulong").
762 Replace ("single", "float").
763 Replace ("boolean", "bool")
764 + match.Groups [2].Captures [0].Value;
768 /// Returns the signature of the method
770 static public string CSharpSignature (MethodBase mb)
775 // FIXME: We should really have a single function to do
776 // everything instead of the following 5 line pattern
778 ParameterData iparams = LookupParametersByBuilder (mb);
780 if (iparams == null){
781 ParameterInfo [] pi = mb.GetParameters ();
782 iparams = new ReflectionParameters (pi);
785 for (int i = 0; i < iparams.Count; i++) {
789 sig += iparams.ParameterDesc(i);
793 return mb.DeclaringType.Name + "." + mb.Name + sig;
797 /// Looks up a type, and aborts if it is not found. This is used
798 /// by types required by the compiler
800 static Type CoreLookupType (string name)
802 Type t = LookupTypeDirect (name);
805 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
806 Environment.Exit (0);
813 /// Returns the MethodInfo for a method named `name' defined
814 /// in type `t' which takes arguments of types `args'
816 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
820 BindingFlags flags = instance_and_static | BindingFlags.Public;
826 flags |= BindingFlags.NonPublic;
828 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
829 if (list.Count == 0) {
831 Report.Error (-19, "Can not find the core function `" + name + "'");
835 MethodInfo mi = list [0] as MethodInfo;
838 Report.Error (-19, "Can not find the core function `" + name + "'");
845 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
847 return GetMethod (t, name, args, false, report_errors);
850 static MethodInfo GetMethod (Type t, string name, Type [] args)
852 return GetMethod (t, name, args, true);
857 /// Returns the ConstructorInfo for "args"
859 static ConstructorInfo GetConstructor (Type t, Type [] args)
867 list = FindMembers (t, MemberTypes.Constructor,
868 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
869 signature_filter, sig);
870 if (list.Count == 0){
871 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
875 ConstructorInfo ci = list [0] as ConstructorInfo;
877 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
884 public static void InitEnumUnderlyingTypes ()
887 int32_type = CoreLookupType ("System.Int32");
888 int64_type = CoreLookupType ("System.Int64");
889 uint32_type = CoreLookupType ("System.UInt32");
890 uint64_type = CoreLookupType ("System.UInt64");
891 byte_type = CoreLookupType ("System.Byte");
892 sbyte_type = CoreLookupType ("System.SByte");
893 short_type = CoreLookupType ("System.Int16");
894 ushort_type = CoreLookupType ("System.UInt16");
898 /// The types have to be initialized after the initial
899 /// population of the type has happened (for example, to
900 /// bootstrap the corlib.dll
902 public static void InitCoreTypes ()
904 object_type = CoreLookupType ("System.Object");
905 value_type = CoreLookupType ("System.ValueType");
907 InitEnumUnderlyingTypes ();
909 char_type = CoreLookupType ("System.Char");
910 string_type = CoreLookupType ("System.String");
911 float_type = CoreLookupType ("System.Single");
912 double_type = CoreLookupType ("System.Double");
913 char_ptr_type = CoreLookupType ("System.Char*");
914 decimal_type = CoreLookupType ("System.Decimal");
915 bool_type = CoreLookupType ("System.Boolean");
916 enum_type = CoreLookupType ("System.Enum");
918 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
919 delegate_type = CoreLookupType ("System.Delegate");
921 array_type = CoreLookupType ("System.Array");
922 void_type = CoreLookupType ("System.Void");
923 type_type = CoreLookupType ("System.Type");
925 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
926 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
927 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
928 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
929 asynccallback_type = CoreLookupType ("System.AsyncCallback");
930 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
931 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
932 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
933 idisposable_type = CoreLookupType ("System.IDisposable");
934 icloneable_type = CoreLookupType ("System.ICloneable");
935 monitor_type = CoreLookupType ("System.Threading.Monitor");
936 intptr_type = CoreLookupType ("System.IntPtr");
938 attribute_type = CoreLookupType ("System.Attribute");
939 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
940 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
941 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
942 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
943 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
944 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
947 // Sigh. Remove this before the release. Wonder what versions of Mono
948 // people are running.
950 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
952 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
954 void_ptr_type = CoreLookupType ("System.Void*");
956 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
958 exception_type = CoreLookupType ("System.Exception");
959 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
964 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
965 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
968 // When compiling corlib, store the "real" types here.
970 if (!RootContext.StdLib) {
971 system_int32_type = typeof (System.Int32);
972 system_array_type = typeof (System.Array);
973 system_type_type = typeof (System.Type);
974 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
976 Type [] void_arg = { };
977 system_int_array_get_length = GetMethod (
978 system_array_type, "get_Length", void_arg);
979 system_int_array_get_rank = GetMethod (
980 system_array_type, "get_Rank", void_arg);
981 system_object_array_clone = GetMethod (
982 system_array_type, "Clone", void_arg);
984 Type [] system_int_arg = { system_int32_type };
985 system_int_array_get_length_int = GetMethod (
986 system_array_type, "GetLength", system_int_arg);
987 system_int_array_get_upper_bound_int = GetMethod (
988 system_array_type, "GetUpperBound", system_int_arg);
989 system_int_array_get_lower_bound_int = GetMethod (
990 system_array_type, "GetLowerBound", system_int_arg);
992 Type [] system_array_int_arg = { system_array_type, system_int32_type };
993 system_void_array_copyto_array_int = GetMethod (
994 system_array_type, "CopyTo", system_array_int_arg);
996 Type [] system_3_type_arg = {
997 system_type_type, system_type_type, system_type_type };
998 Type [] system_4_type_arg = {
999 system_type_type, system_type_type, system_type_type, system_type_type };
1001 MethodInfo set_corlib_type_builders = GetMethod (
1002 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1003 system_4_type_arg, true, false);
1005 if (set_corlib_type_builders != null) {
1006 object[] args = new object [4];
1007 args [0] = object_type;
1008 args [1] = value_type;
1009 args [2] = enum_type;
1010 args [3] = void_type;
1012 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
1014 // Compatibility for an older version of the class libs.
1015 set_corlib_type_builders = GetMethod (
1016 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1017 system_3_type_arg, true, true);
1019 if (set_corlib_type_builders == null) {
1020 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1024 object[] args = new object [3];
1025 args [0] = object_type;
1026 args [1] = value_type;
1027 args [2] = enum_type;
1029 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
1033 system_object_expr.Type = object_type;
1034 system_string_expr.Type = string_type;
1035 system_boolean_expr.Type = bool_type;
1036 system_decimal_expr.Type = decimal_type;
1037 system_single_expr.Type = float_type;
1038 system_double_expr.Type = double_type;
1039 system_sbyte_expr.Type = sbyte_type;
1040 system_byte_expr.Type = byte_type;
1041 system_int16_expr.Type = short_type;
1042 system_uint16_expr.Type = ushort_type;
1043 system_int32_expr.Type = int32_type;
1044 system_uint32_expr.Type = uint32_type;
1045 system_int64_expr.Type = int64_type;
1046 system_uint64_expr.Type = uint64_type;
1047 system_char_expr.Type = char_type;
1048 system_void_expr.Type = void_type;
1049 system_asynccallback_expr.Type = asynccallback_type;
1050 system_iasyncresult_expr.Type = iasyncresult_type;
1051 system_valuetype_expr.Type = value_type;
1055 // The helper methods that are used by the compiler
1057 public static void InitCodeHelpers ()
1060 // Now load the default methods that we use.
1062 Type [] string_string = { string_type, string_type };
1063 string_concat_string_string = GetMethod (
1064 string_type, "Concat", string_string);
1065 Type [] string_string_string = { string_type, string_type, string_type };
1066 string_concat_string_string_string = GetMethod (
1067 string_type, "Concat", string_string_string);
1068 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1069 string_concat_string_string_string_string = GetMethod (
1070 string_type, "Concat", string_string_string_string);
1072 Type [] object_object = { object_type, object_type };
1073 string_concat_object_object = GetMethod (
1074 string_type, "Concat", object_object);
1076 Type [] string_ = { string_type };
1077 string_isinterneted_string = GetMethod (
1078 string_type, "IsInterned", string_);
1080 Type [] runtime_type_handle = { runtime_handle_type };
1081 system_type_get_type_from_handle = GetMethod (
1082 type_type, "GetTypeFromHandle", runtime_type_handle);
1084 Type [] delegate_delegate = { delegate_type, delegate_type };
1085 delegate_combine_delegate_delegate = GetMethod (
1086 delegate_type, "Combine", delegate_delegate);
1088 delegate_remove_delegate_delegate = GetMethod (
1089 delegate_type, "Remove", delegate_delegate);
1094 Type [] void_arg = { };
1095 object_getcurrent_void = GetMethod (
1096 ienumerator_type, "get_Current", void_arg);
1097 bool_movenext_void = GetMethod (
1098 ienumerator_type, "MoveNext", void_arg);
1099 void_reset_void = GetMethod (
1100 ienumerator_type, "Reset", void_arg);
1101 void_dispose_void = GetMethod (
1102 idisposable_type, "Dispose", void_arg);
1103 int_get_offset_to_string_data = GetMethod (
1104 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1105 int_array_get_length = GetMethod (
1106 array_type, "get_Length", void_arg);
1107 int_array_get_rank = GetMethod (
1108 array_type, "get_Rank", void_arg);
1109 ienumerable_getenumerator_void = GetMethod (
1110 ienumerable_type, "GetEnumerator", void_arg);
1115 Type [] int_arg = { int32_type };
1116 int_array_get_length_int = GetMethod (
1117 array_type, "GetLength", int_arg);
1118 int_array_get_upper_bound_int = GetMethod (
1119 array_type, "GetUpperBound", int_arg);
1120 int_array_get_lower_bound_int = GetMethod (
1121 array_type, "GetLowerBound", int_arg);
1124 // System.Array methods
1126 object_array_clone = GetMethod (
1127 array_type, "Clone", void_arg);
1128 Type [] array_int_arg = { array_type, int32_type };
1129 void_array_copyto_array_int = GetMethod (
1130 array_type, "CopyTo", array_int_arg);
1135 Type [] object_arg = { object_type };
1136 void_monitor_enter_object = GetMethod (
1137 monitor_type, "Enter", object_arg);
1138 void_monitor_exit_object = GetMethod (
1139 monitor_type, "Exit", object_arg);
1141 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1143 void_initializearray_array_fieldhandle = GetMethod (
1144 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1149 int_getlength_int = GetMethod (
1150 array_type, "GetLength", int_arg);
1153 // Decimal constructors
1155 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1156 void_decimal_ctor_five_args = GetConstructor (
1157 decimal_type, dec_arg);
1162 cons_param_array_attribute = GetConstructor (
1163 param_array_type, void_arg);
1165 unverifiable_code_ctor = GetConstructor (
1166 unverifiable_code_type, void_arg);
1169 // InvalidOperationException
1171 invalid_operation_ctor = GetConstructor (
1172 invalid_operation_exception_type, void_arg);
1176 object_ctor = GetConstructor (object_type, void_arg);
1180 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1182 static Hashtable type_hash = new Hashtable ();
1185 /// This is the "old", non-cache based FindMembers() function. We cannot use
1186 /// the cache here because there is no member name argument.
1188 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1189 MemberFilter filter, object criteria)
1191 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1194 // `builder_to_declspace' contains all dynamic types.
1198 Timer.StartTimer (TimerType.FindMembers);
1199 list = decl.FindMembers (mt, bf, filter, criteria);
1200 Timer.StopTimer (TimerType.FindMembers);
1205 // We have to take care of arrays specially, because GetType on
1206 // a TypeBuilder array will return a Type, not a TypeBuilder,
1207 // and we can not call FindMembers on this type.
1209 if (t.IsSubclassOf (TypeManager.array_type))
1210 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1213 // Since FindMembers will not lookup both static and instance
1214 // members, we emulate this behaviour here.
1216 if ((bf & instance_and_static) == instance_and_static){
1217 MemberInfo [] i_members = t.FindMembers (
1218 mt, bf & ~BindingFlags.Static, filter, criteria);
1220 int i_len = i_members.Length;
1222 MemberInfo one = i_members [0];
1225 // If any of these are present, we are done!
1227 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1228 return new MemberList (i_members);
1231 MemberInfo [] s_members = t.FindMembers (
1232 mt, bf & ~BindingFlags.Instance, filter, criteria);
1234 int s_len = s_members.Length;
1235 if (i_len > 0 || s_len > 0)
1236 return new MemberList (i_members, s_members);
1239 return new MemberList (i_members);
1241 return new MemberList (s_members);
1245 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1250 /// This method is only called from within MemberLookup. It tries to use the member
1251 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1252 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1253 /// our return value will already contain all inherited members and the caller don't need
1254 /// to check base classes and interfaces anymore.
1256 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1257 string name, out bool used_cache)
1260 // We have to take care of arrays specially, because GetType on
1261 // a TypeBuilder array will return a Type, not a TypeBuilder,
1262 // and we can not call FindMembers on this type.
1264 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1266 return TypeHandle.ArrayType.MemberCache.FindMembers (
1267 mt, bf, name, FilterWithClosure_delegate, null);
1271 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1272 // and we can ask the DeclSpace for the MemberCache.
1274 if (t is TypeBuilder) {
1275 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1276 MemberCache cache = decl.MemberCache;
1279 // If this DeclSpace has a MemberCache, use it.
1282 if (cache != null) {
1284 return cache.FindMembers (
1285 mt, bf, name, FilterWithClosure_delegate, null);
1288 // If there is no MemberCache, we need to use the "normal" FindMembers.
1291 Timer.StartTimer (TimerType.FindMembers);
1292 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1293 FilterWithClosure_delegate, name);
1294 Timer.StopTimer (TimerType.FindMembers);
1301 // This call will always succeed. There is exactly one TypeHandle instance per
1302 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1303 // if it didn't already exist.
1305 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1308 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1311 public static bool IsBuiltinType (Type t)
1313 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1314 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1315 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1316 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1323 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1324 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1326 public static bool IsCLRType (Type t)
1328 if (t == object_type || t == int32_type || t == uint32_type ||
1329 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1330 t == char_type || t == short_type || t == bool_type ||
1331 t == sbyte_type || t == byte_type || t == ushort_type)
1337 public static bool IsDelegateType (Type t)
1339 if (t.IsSubclassOf (TypeManager.delegate_type))
1345 public static bool IsEnumType (Type t)
1347 if (t == TypeManager.enum_type || t.IsSubclassOf (TypeManager.enum_type))
1352 public static bool IsBuiltinOrEnum (Type t)
1354 if (IsBuiltinType (t))
1364 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1366 public static bool IsUnmanagedType (Type t)
1368 if (IsBuiltinType (t) && t != TypeManager.string_type)
1377 if (IsValueType (t)){
1378 if (t is TypeBuilder){
1379 TypeContainer tc = LookupTypeContainer (t);
1381 foreach (Field f in tc.Fields){
1382 if (f.FieldBuilder.IsStatic)
1384 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1388 FieldInfo [] fields = t.GetFields ();
1390 foreach (FieldInfo f in fields){
1393 if (!IsUnmanagedType (f.FieldType))
1403 public static bool IsValueType (Type t)
1405 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1411 public static bool IsInterfaceType (Type t)
1413 Interface iface = builder_to_declspace [t] as Interface;
1422 // Checks whether `type' is a subclass or nested child of `parent'.
1424 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1427 if ((type == parent) || type.IsSubclassOf (parent))
1430 // Handle nested types.
1431 type = type.DeclaringType;
1432 } while (type != null);
1438 // Checks whether `type' is a nested child of `parent'.
1440 public static bool IsNestedChildOf (Type type, Type parent)
1445 type = type.DeclaringType;
1446 while (type != null) {
1450 type = type.DeclaringType;
1457 // Do the right thing when returning the element type of an
1458 // array type based on whether we are compiling corlib or not
1460 public static Type GetElementType (Type t)
1462 if (RootContext.StdLib)
1463 return t.GetElementType ();
1465 return TypeToCoreType (t.GetElementType ());
1469 /// Returns the User Defined Types
1471 public static ArrayList UserTypes {
1477 public static Hashtable TypeContainers {
1479 return typecontainers;
1483 static Hashtable attr_to_allowmult;
1485 public static void RegisterAttributeAllowMultiple (Type attr_type, bool allow)
1487 if (attr_to_allowmult == null)
1488 attr_to_allowmult = new PtrHashtable ();
1490 if (attr_to_allowmult.Contains (attr_type))
1493 attr_to_allowmult.Add (attr_type, allow);
1497 public static bool AreMultipleAllowed (Type attr_type)
1499 if (!(attr_type is TypeBuilder)) {
1500 System.Attribute [] attrs = System.Attribute.GetCustomAttributes (attr_type);
1502 foreach (System.Attribute tmp in attrs)
1503 if (tmp is AttributeUsageAttribute) {
1504 return ((AttributeUsageAttribute) tmp).AllowMultiple;
1510 if (attr_to_allowmult == null)
1513 return (bool) attr_to_allowmult [attr_type];
1516 static Hashtable builder_to_constant;
1518 public static void RegisterConstant (FieldBuilder fb, Const c)
1520 if (builder_to_constant == null)
1521 builder_to_constant = new PtrHashtable ();
1523 if (builder_to_constant.Contains (fb))
1526 builder_to_constant.Add (fb, c);
1529 public static Const LookupConstant (FieldBuilder fb)
1531 if (builder_to_constant == null)
1534 return (Const) builder_to_constant [fb];
1538 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1542 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1543 /// for anything which is dynamic, and we need this in a number of places,
1544 /// we register this information here, and use it afterwards.
1546 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1551 method_arguments.Add (mb, args);
1552 method_internal_params.Add (mb, ip);
1557 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1559 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1562 if (method_internal_params.Contains (mb))
1563 return (InternalParameters) method_internal_params [mb];
1565 throw new Exception ("Argument for Method not registered" + mb);
1569 /// Returns the argument types for a method based on its methodbase
1571 /// For dynamic methods, we use the compiler provided types, for
1572 /// methods from existing assemblies we load them from GetParameters,
1573 /// and insert them into the cache
1575 static public Type [] GetArgumentTypes (MethodBase mb)
1577 if (method_arguments.Contains (mb))
1578 return (Type []) method_arguments [mb];
1580 ParameterInfo [] pi = mb.GetParameters ();
1582 Type [] types = new Type [c];
1584 for (int i = 0; i < c; i++)
1585 types [i] = pi [i].ParameterType;
1587 method_arguments.Add (mb, types);
1593 /// Returns the argument types for an indexer based on its PropertyInfo
1595 /// For dynamic indexers, we use the compiler provided types, for
1596 /// indexers from existing assemblies we load them from GetParameters,
1597 /// and insert them into the cache
1599 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1601 if (indexer_arguments.Contains (indexer))
1602 return (Type []) indexer_arguments [indexer];
1603 else if (indexer is PropertyBuilder)
1604 // If we're a PropertyBuilder and not in the
1605 // `indexer_arguments' hash, then we're a property and
1609 ParameterInfo [] pi = indexer.GetIndexParameters ();
1610 // Property, not an indexer.
1614 Type [] types = new Type [c];
1616 for (int i = 0; i < c; i++)
1617 types [i] = pi [i].ParameterType;
1619 indexer_arguments.Add (indexer, types);
1625 // This is a workaround the fact that GetValue is not
1626 // supported for dynamic types
1628 static Hashtable fields = new Hashtable ();
1629 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1631 if (fields.Contains (fb))
1634 fields.Add (fb, value);
1639 static public object GetValue (FieldBuilder fb)
1644 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1645 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1647 if (fieldbuilders_to_fields.Contains (fb))
1650 fieldbuilders_to_fields.Add (fb, f);
1655 // The return value can be null; This will be the case for
1656 // auxiliary FieldBuilders created by the compiler that have no
1657 // real field being declared on the source code
1659 static public FieldBase GetField (FieldInfo fb)
1661 return (FieldBase) fieldbuilders_to_fields [fb];
1664 static Hashtable events;
1666 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1669 events = new Hashtable ();
1671 if (events.Contains (eb))
1674 events.Add (eb, new Pair (add, remove));
1679 static public MethodInfo GetAddMethod (EventInfo ei)
1681 if (ei is MyEventBuilder) {
1682 Pair pair = (Pair) events [ei];
1684 return (MethodInfo) pair.First;
1686 return ei.GetAddMethod ();
1689 static public MethodInfo GetRemoveMethod (EventInfo ei)
1691 if (ei is MyEventBuilder) {
1692 Pair pair = (Pair) events [ei];
1694 return (MethodInfo) pair.Second;
1696 return ei.GetRemoveMethod ();
1699 static Hashtable priv_fields_events;
1701 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1703 if (priv_fields_events == null)
1704 priv_fields_events = new Hashtable ();
1706 if (priv_fields_events.Contains (einfo))
1709 priv_fields_events.Add (einfo, builder);
1714 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1716 if (priv_fields_events == null)
1719 return (MemberInfo) priv_fields_events [ei];
1722 static Hashtable properties;
1724 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1726 if (properties == null)
1727 properties = new Hashtable ();
1729 if (properties.Contains (pb))
1732 properties.Add (pb, new Pair (get, set));
1737 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1738 MethodBase set, Type[] args)
1740 if (!RegisterProperty (pb, get,set))
1743 indexer_arguments.Add (pb, args);
1749 /// Given an array of interface types, expand and eliminate repeated ocurrences
1750 /// of an interface.
1754 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1757 public static TypeExpr[] ExpandInterfaces (TypeExpr [] base_interfaces)
1759 ArrayList new_ifaces = new ArrayList ();
1761 foreach (TypeExpr iface in base_interfaces){
1762 if (!new_ifaces.Contains (iface))
1763 new_ifaces.Add (iface);
1765 TypeExpr [] implementing = iface.GetInterfaces ();
1767 foreach (TypeExpr imp in implementing){
1768 if (!new_ifaces.Contains (imp))
1769 new_ifaces.Add (imp);
1772 TypeExpr [] ret = new TypeExpr [new_ifaces.Count];
1773 new_ifaces.CopyTo (ret, 0);
1778 /// This function returns the interfaces in the type `t'. Works with
1779 /// both types and TypeBuilders.
1781 public static TypeExpr [] GetInterfaces (Type t)
1784 // The reason for catching the Array case is that Reflection.Emit
1785 // will not return a TypeBuilder for Array types of TypeBuilder types,
1786 // but will still throw an exception if we try to call GetInterfaces
1789 // Since the array interfaces are always constant, we return those for
1794 t = TypeManager.array_type;
1796 if (t is TypeBuilder){
1797 TypeExpr [] parent_ifaces;
1799 if (t.BaseType == null)
1800 parent_ifaces = NoTypeExprs;
1802 parent_ifaces = GetInterfaces (t.BaseType);
1803 TypeExpr [] type_ifaces = (TypeExpr []) builder_to_ifaces [t];
1804 if (type_ifaces == null)
1805 type_ifaces = NoTypeExprs;
1807 int parent_count = parent_ifaces.Length;
1808 TypeExpr [] result = new TypeExpr [parent_count + type_ifaces.Length];
1809 parent_ifaces.CopyTo (result, 0);
1810 type_ifaces.CopyTo (result, parent_count);
1814 Type [] ifaces = t.GetInterfaces ();
1816 TypeExpr [] result = new TypeExpr [ifaces.Length];
1817 for (int i = 0; i < ifaces.Length; i++)
1818 result [i] = new TypeExpression (ifaces [i], Location.Null);
1824 /// The following is used to check if a given type implements an interface.
1825 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1827 public static bool ImplementsInterface (Type t, Type iface)
1829 TypeExpr [] interfaces;
1832 // FIXME OPTIMIZATION:
1833 // as soon as we hit a non-TypeBuiler in the interface
1834 // chain, we could return, as the `Type.GetInterfaces'
1835 // will return all the interfaces implement by the type
1839 interfaces = GetInterfaces (t);
1841 if (interfaces != null){
1842 foreach (TypeExpr i in interfaces){
1843 if (i.Type == iface)
1849 } while (t != null);
1854 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
1856 // This is a custom version of Convert.ChangeType() which works
1857 // with the TypeBuilder defined types when compiling corlib.
1858 public static object ChangeType (object value, Type conversionType, out bool error)
1860 IConvertible convert_value = value as IConvertible;
1862 if (convert_value == null){
1868 // We must use Type.Equals() here since `conversionType' is
1869 // the TypeBuilder created version of a system type and not
1870 // the system type itself. You cannot use Type.GetTypeCode()
1871 // on such a type - it'd always return TypeCode.Object.
1875 if (conversionType.Equals (typeof (Boolean)))
1876 return (object)(convert_value.ToBoolean (nf_provider));
1877 else if (conversionType.Equals (typeof (Byte)))
1878 return (object)(convert_value.ToByte (nf_provider));
1879 else if (conversionType.Equals (typeof (Char)))
1880 return (object)(convert_value.ToChar (nf_provider));
1881 else if (conversionType.Equals (typeof (DateTime)))
1882 return (object)(convert_value.ToDateTime (nf_provider));
1883 else if (conversionType.Equals (typeof (Decimal)))
1884 return (object)(convert_value.ToDecimal (nf_provider));
1885 else if (conversionType.Equals (typeof (Double)))
1886 return (object)(convert_value.ToDouble (nf_provider));
1887 else if (conversionType.Equals (typeof (Int16)))
1888 return (object)(convert_value.ToInt16 (nf_provider));
1889 else if (conversionType.Equals (typeof (Int32)))
1890 return (object)(convert_value.ToInt32 (nf_provider));
1891 else if (conversionType.Equals (typeof (Int64)))
1892 return (object)(convert_value.ToInt64 (nf_provider));
1893 else if (conversionType.Equals (typeof (SByte)))
1894 return (object)(convert_value.ToSByte (nf_provider));
1895 else if (conversionType.Equals (typeof (Single)))
1896 return (object)(convert_value.ToSingle (nf_provider));
1897 else if (conversionType.Equals (typeof (String)))
1898 return (object)(convert_value.ToString (nf_provider));
1899 else if (conversionType.Equals (typeof (UInt16)))
1900 return (object)(convert_value.ToUInt16 (nf_provider));
1901 else if (conversionType.Equals (typeof (UInt32)))
1902 return (object)(convert_value.ToUInt32 (nf_provider));
1903 else if (conversionType.Equals (typeof (UInt64)))
1904 return (object)(convert_value.ToUInt64 (nf_provider));
1905 else if (conversionType.Equals (typeof (Object)))
1906 return (object)(value);
1916 // This is needed, because enumerations from assemblies
1917 // do not report their underlyingtype, but they report
1920 public static Type EnumToUnderlying (Type t)
1922 if (t == TypeManager.enum_type)
1925 t = t.UnderlyingSystemType;
1926 if (!TypeManager.IsEnumType (t))
1929 if (t is TypeBuilder) {
1930 // slow path needed to compile corlib
1931 if (t == TypeManager.bool_type ||
1932 t == TypeManager.byte_type ||
1933 t == TypeManager.sbyte_type ||
1934 t == TypeManager.char_type ||
1935 t == TypeManager.short_type ||
1936 t == TypeManager.ushort_type ||
1937 t == TypeManager.int32_type ||
1938 t == TypeManager.uint32_type ||
1939 t == TypeManager.int64_type ||
1940 t == TypeManager.uint64_type)
1942 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1944 TypeCode tc = Type.GetTypeCode (t);
1947 case TypeCode.Boolean:
1948 return TypeManager.bool_type;
1950 return TypeManager.byte_type;
1951 case TypeCode.SByte:
1952 return TypeManager.sbyte_type;
1954 return TypeManager.char_type;
1955 case TypeCode.Int16:
1956 return TypeManager.short_type;
1957 case TypeCode.UInt16:
1958 return TypeManager.ushort_type;
1959 case TypeCode.Int32:
1960 return TypeManager.int32_type;
1961 case TypeCode.UInt32:
1962 return TypeManager.uint32_type;
1963 case TypeCode.Int64:
1964 return TypeManager.int64_type;
1965 case TypeCode.UInt64:
1966 return TypeManager.uint64_type;
1968 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1972 // When compiling corlib and called with one of the core types, return
1973 // the corresponding typebuilder for that type.
1975 public static Type TypeToCoreType (Type t)
1977 if (RootContext.StdLib || (t is TypeBuilder))
1980 TypeCode tc = Type.GetTypeCode (t);
1983 case TypeCode.Boolean:
1984 return TypeManager.bool_type;
1986 return TypeManager.byte_type;
1987 case TypeCode.SByte:
1988 return TypeManager.sbyte_type;
1990 return TypeManager.char_type;
1991 case TypeCode.Int16:
1992 return TypeManager.short_type;
1993 case TypeCode.UInt16:
1994 return TypeManager.ushort_type;
1995 case TypeCode.Int32:
1996 return TypeManager.int32_type;
1997 case TypeCode.UInt32:
1998 return TypeManager.uint32_type;
1999 case TypeCode.Int64:
2000 return TypeManager.int64_type;
2001 case TypeCode.UInt64:
2002 return TypeManager.uint64_type;
2003 case TypeCode.Single:
2004 return TypeManager.float_type;
2005 case TypeCode.Double:
2006 return TypeManager.double_type;
2007 case TypeCode.String:
2008 return TypeManager.string_type;
2010 if (t == typeof (void))
2011 return TypeManager.void_type;
2012 if (t == typeof (object))
2013 return TypeManager.object_type;
2014 if (t == typeof (System.Type))
2015 return TypeManager.type_type;
2021 /// Utility function that can be used to probe whether a type
2022 /// is managed or not.
2024 public static bool VerifyUnManaged (Type t, Location loc)
2026 if (t.IsValueType || t.IsPointer){
2028 // FIXME: this is more complex, we actually need to
2029 // make sure that the type does not contain any
2035 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2036 // We need this explicit check here to make it work when
2037 // compiling corlib.
2042 "Cannot take the address or size of a variable of a managed type ('" +
2043 CSharpName (t) + "')");
2048 /// Returns the name of the indexer in a given type.
2051 /// The default is not always `Item'. The user can change this behaviour by
2052 /// using the DefaultMemberAttribute in the class.
2054 /// For example, the String class indexer is named `Chars' not `Item'
2056 public static string IndexerPropertyName (Type t)
2058 if (t is TypeBuilder) {
2059 if (t.IsInterface) {
2060 Interface i = LookupInterface (t);
2062 if ((i == null) || (i.IndexerName == null))
2065 return i.IndexerName;
2067 TypeContainer tc = LookupTypeContainer (t);
2069 if ((tc == null) || (tc.IndexerName == null))
2072 return tc.IndexerName;
2076 System.Attribute attr = System.Attribute.GetCustomAttribute (
2077 t, TypeManager.default_member_type);
2079 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2080 return dma.MemberName;
2086 public static void MakePinned (LocalBuilder builder)
2089 // FIXME: Flag the "LocalBuilder" type as being
2090 // pinned. Figure out API.
2096 // Returns whether the array of memberinfos contains the given method
2098 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2100 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2102 foreach (MethodBase method in array) {
2103 if (method.Name != new_method.Name)
2106 if (method is MethodInfo && new_method is MethodInfo)
2107 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2111 Type [] old_args = TypeManager.GetArgumentTypes (method);
2112 int old_count = old_args.Length;
2115 if (new_args.Length != old_count)
2118 for (i = 0; i < old_count; i++){
2119 if (old_args [i] != new_args [i])
2132 // We copy methods from `new_members' into `target_list' if the signature
2133 // for the method from in the new list does not exist in the target_list
2135 // The name is assumed to be the same.
2137 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
2139 if (target_list == null){
2140 target_list = new ArrayList ();
2142 foreach (MemberInfo mi in new_members){
2143 if (mi is MethodBase)
2144 target_list.Add (mi);
2149 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2150 target_list.CopyTo (target_array, 0);
2152 foreach (MemberInfo mi in new_members){
2153 MethodBase new_method = (MethodBase) mi;
2155 if (!ArrayContainsMethod (target_array, new_method))
2156 target_list.Add (new_method);
2162 public enum MethodFlags {
2164 IsObsoleteError = 1 << 1,
2165 ShouldIgnore = 1 << 2
2169 // Returns the TypeManager.MethodFlags for this method.
2170 // This emits an error 619 / warning 618 if the method is obsolete.
2171 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
2173 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
2175 MethodFlags flags = 0;
2177 if (mb.DeclaringType is TypeBuilder){
2178 MethodData method = (MethodData) builder_to_method [mb];
2179 if (method == null) {
2180 // FIXME: implement Obsolete attribute on Property,
2181 // Indexer and Event.
2185 return method.GetMethodFlags (loc);
2188 object [] attrs = mb.GetCustomAttributes (true);
2189 foreach (object ta in attrs){
2190 if (!(ta is System.Attribute)){
2191 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
2194 System.Attribute a = (System.Attribute) ta;
2195 if (a.TypeId == TypeManager.obsolete_attribute_type){
2196 ObsoleteAttribute oa = (ObsoleteAttribute) a;
2198 string method_desc = TypeManager.CSharpSignature (mb);
2201 Report.Error (619, loc, "Method `" + method_desc +
2202 "' is obsolete: `" + oa.Message + "'");
2203 return MethodFlags.IsObsoleteError;
2205 Report.Warning (618, loc, "Method `" + method_desc +
2206 "' is obsolete: `" + oa.Message + "'");
2208 flags |= MethodFlags.IsObsolete;
2214 // Skip over conditional code.
2216 if (a.TypeId == TypeManager.conditional_attribute_type){
2217 ConditionalAttribute ca = (ConditionalAttribute) a;
2219 if (RootContext.AllDefines [ca.ConditionString] == null)
2220 flags |= MethodFlags.ShouldIgnore;
2227 #region MemberLookup implementation
2230 // Name of the member
2232 static string closure_name;
2235 // Whether we allow private members in the result (since FindMembers
2236 // uses NonPublic for both protected and private), we need to distinguish.
2238 static bool closure_private_ok;
2241 // Who is invoking us and which type is being queried currently.
2243 static Type closure_invocation_type;
2244 static Type closure_queried_type;
2245 static Type closure_qualifier_type;
2248 // The assembly that defines the type is that is calling us
2250 static Assembly closure_invocation_assembly;
2252 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2258 // This filter filters by name + whether it is ok to include private
2259 // members in the search
2261 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
2264 // Hack: we know that the filter criteria will always be in the `closure'
2268 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2271 if (((closure_qualifier_type == null) || (closure_qualifier_type == closure_invocation_type)) &&
2272 (m.DeclaringType == closure_invocation_type))
2276 // Ugly: we need to find out the type of `m', and depending
2277 // on this, tell whether we accept or not
2279 if (m is MethodBase){
2280 MethodBase mb = (MethodBase) m;
2281 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2283 if (ma == MethodAttributes.Private)
2284 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2285 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2288 // FamAndAssem requires that we not only derivate, but we are on the
2291 if (ma == MethodAttributes.FamANDAssem){
2292 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
2296 // Assembly and FamORAssem succeed if we're in the same assembly.
2297 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2298 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
2302 // We already know that we aren't in the same assembly.
2303 if (ma == MethodAttributes.Assembly)
2306 // Family and FamANDAssem require that we derive.
2307 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2308 if (closure_invocation_type == null)
2311 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2314 // Although a derived class can access protected members of its base class
2315 // it cannot do so through an instance of the base class (CS1540).
2316 if (!mb.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2317 (closure_qualifier_type != null) &&
2318 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2328 if (m is FieldInfo){
2329 FieldInfo fi = (FieldInfo) m;
2330 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2332 if (fa == FieldAttributes.Private)
2333 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2334 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2337 // FamAndAssem requires that we not only derivate, but we are on the
2340 if (fa == FieldAttributes.FamANDAssem){
2341 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2345 // Assembly and FamORAssem succeed if we're in the same assembly.
2346 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2347 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2351 // We already know that we aren't in the same assembly.
2352 if (fa == FieldAttributes.Assembly)
2355 // Family and FamANDAssem require that we derive.
2356 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2357 if (closure_invocation_type == null)
2360 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2363 // Although a derived class can access protected members of its base class
2364 // it cannot do so through an instance of the base class (CS1540).
2365 if (!fi.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2366 (closure_qualifier_type != null) &&
2367 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2378 // EventInfos and PropertyInfos, return true because they lack permission
2379 // informaiton, so we need to check later on the methods.
2384 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2385 static MemberFilter FilterNone_delegate = new MemberFilter (FilterNone);
2388 // Looks up a member called `name' in the `queried_type'. This lookup
2389 // is done by code that is contained in the definition for `invocation_type'
2390 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2392 // `invocation_type' is used to check whether we're allowed to access the requested
2393 // member wrt its protection level.
2395 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2396 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2397 // is B and qualifier_type is A). This is used to do the CS1540 check.
2399 // When resolving a SimpleName, `qualifier_type' is null.
2401 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2402 // the same than `queried_type' - except when we're being called from BaseAccess;
2403 // in this case, `invocation_type' is the current type and `queried_type' the base
2404 // type, so this'd normally trigger a CS1540.
2406 // The binding flags are `bf' and the kind of members being looked up are `mt'
2408 // The return value always includes private members which code in `invocation_type'
2409 // is allowed to access (using the specified `qualifier_type' if given); only use
2410 // BindingFlags.NonPublic to bypass the permission check.
2412 // Returns an array of a single element for everything but Methods/Constructors
2413 // that might return multiple matches.
2415 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2416 Type queried_type, MemberTypes mt,
2417 BindingFlags original_bf, string name)
2419 Timer.StartTimer (TimerType.MemberLookup);
2421 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2422 queried_type, mt, original_bf, name);
2424 Timer.StopTimer (TimerType.MemberLookup);
2429 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2430 Type queried_type, MemberTypes mt,
2431 BindingFlags original_bf, string name)
2433 BindingFlags bf = original_bf;
2435 ArrayList method_list = null;
2436 Type current_type = queried_type;
2437 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2438 bool skip_iface_check = true, used_cache = false;
2439 bool always_ok_flag = false;
2441 closure_name = name;
2442 closure_invocation_type = invocation_type;
2443 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2444 closure_qualifier_type = qualifier_type;
2447 // If we are a nested class, we always have access to our container
2450 if (invocation_type != null){
2451 string invocation_name = invocation_type.FullName;
2452 if (invocation_name.IndexOf ('+') != -1){
2453 string container = queried_type.FullName + "+";
2454 int container_length = container.Length;
2456 if (invocation_name.Length > container_length){
2457 string shared = invocation_name.Substring (0, container_length);
2459 if (shared == container)
2460 always_ok_flag = true;
2469 // `NonPublic' is lame, because it includes both protected and
2470 // private methods, so we need to control this behavior by
2471 // explicitly tracking if a private method is ok or not.
2473 // The possible cases are:
2474 // public, private and protected (internal does not come into the
2477 if ((invocation_type != null) &&
2478 ((invocation_type == current_type) ||
2479 IsNestedChildOf (invocation_type, current_type)) ||
2481 bf = original_bf | BindingFlags.NonPublic;
2485 closure_private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2486 closure_queried_type = current_type;
2488 Timer.StopTimer (TimerType.MemberLookup);
2490 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2492 Timer.StartTimer (TimerType.MemberLookup);
2495 // When queried for an interface type, the cache will automatically check all
2496 // inherited members, so we don't need to do this here. However, this only
2497 // works if we already used the cache in the first iteration of this loop.
2499 // If we used the cache in any further iteration, we can still terminate the
2500 // loop since the cache always looks in all parent classes.
2506 skip_iface_check = false;
2508 if (current_type == TypeManager.object_type)
2511 current_type = current_type.BaseType;
2514 // This happens with interfaces, they have a null
2515 // basetype. Look members up in the Object class.
2517 if (current_type == null)
2518 current_type = TypeManager.object_type;
2521 if (list.Count == 0)
2525 // Events and types are returned by both `static' and `instance'
2526 // searches, which means that our above FindMembers will
2527 // return two copies of the same.
2529 if (list.Count == 1 && !(list [0] is MethodBase)){
2530 return (MemberInfo []) list;
2534 // Multiple properties: we query those just to find out the indexer
2537 if (list [0] is PropertyInfo)
2538 return (MemberInfo []) list;
2541 // We found an event: the cache lookup returns both the event and
2542 // its private field.
2544 if (list [0] is EventInfo) {
2545 if ((list.Count == 2) && (list [1] is FieldInfo))
2546 return new MemberInfo [] { list [0] };
2553 // We found methods, turn the search into "method scan"
2557 method_list = CopyNewMethods (method_list, list);
2558 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2559 } while (searching);
2561 if (method_list != null && method_list.Count > 0)
2562 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2565 // This happens if we already used the cache in the first iteration, in this case
2566 // the cache already looked in all interfaces.
2568 if (skip_iface_check)
2572 // Interfaces do not list members they inherit, so we have to
2575 if (!queried_type.IsInterface)
2578 if (queried_type.IsArray)
2579 queried_type = TypeManager.array_type;
2581 TypeExpr [] ifaces = GetInterfaces (queried_type);
2585 foreach (TypeExpr itype in ifaces){
2588 x = MemberLookup (null, null, itype.Type, mt, bf, name);
2597 // This is used to extract properties and event declarations from a type
2599 static MemberInfo [] SpecialContainerLookup (Type t, bool is_static)
2601 BindingFlags bf = BindingFlags.DeclaredOnly | (is_static ? BindingFlags.Static : BindingFlags.Instance);
2603 bf |= BindingFlags.Public | BindingFlags.NonPublic;
2605 if (t is TypeBuilder) {
2606 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
2608 return (MemberInfo []) decl.FindMembers (
2609 MemberTypes.Property | MemberTypes.Event,
2610 bf, FilterNone_delegate, null);
2612 return t.FindMembers (MemberTypes.Property | MemberTypes.Event,
2613 bf, FilterNone_delegate, null);
2618 public static bool IsSpecialMethod (MethodBase mb)
2620 Type t = mb.DeclaringType;
2622 MemberInfo [] matches = TypeManager.SpecialContainerLookup (t, mb.IsStatic);
2623 if (matches == null)
2626 foreach (MemberInfo mi in matches){
2627 if (mi is PropertyBuilder){
2628 Pair p = (Pair) properties [mi];
2630 if (p.First == mb || p.Second == mb)
2632 } else if (mi is PropertyInfo){
2633 MethodInfo [] methods = ((PropertyInfo) mi).GetAccessors (true);
2635 foreach (MethodInfo m in methods){
2639 } else if (mi is MyEventBuilder){
2640 Pair p = (Pair) events [mi];
2642 if (p.First == mb || p.Second == mb)
2644 } else if (mi is EventInfo){
2645 EventInfo ei = ((EventInfo) mi);
2647 if (ei.GetAddMethod (true) == mb)
2650 if (ei.GetRemoveMethod (true) == mb)
2653 if (ei.GetRaiseMethod (true) == mb)
2659 // Now check if it is an operator method
2663 if (s.StartsWith ("op_")){
2664 foreach (string name in Unary.oper_names){
2669 foreach (string name in Binary.oper_names){
2683 /// There is exactly one instance of this class per type.
2685 public sealed class TypeHandle : IMemberContainer {
2686 public readonly TypeHandle BaseType;
2688 readonly int id = ++next_id;
2689 static int next_id = 0;
2692 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2693 /// a TypeHandle yet, a new instance of it is created. This static method
2694 /// ensures that we'll only have one TypeHandle instance per type.
2696 public static TypeHandle GetTypeHandle (Type t)
2698 TypeHandle handle = (TypeHandle) type_hash [t];
2702 handle = new TypeHandle (t);
2703 type_hash.Add (t, handle);
2708 /// Returns the TypeHandle for TypeManager.object_type.
2710 public static IMemberContainer ObjectType {
2712 if (object_type != null)
2715 object_type = GetTypeHandle (TypeManager.object_type);
2722 /// Returns the TypeHandle for TypeManager.array_type.
2724 public static IMemberContainer ArrayType {
2726 if (array_type != null)
2729 array_type = GetTypeHandle (TypeManager.array_type);
2735 private static PtrHashtable type_hash = new PtrHashtable ();
2737 private static TypeHandle object_type = null;
2738 private static TypeHandle array_type = null;
2741 private bool is_interface;
2742 private MemberCache member_cache;
2744 private TypeHandle (Type type)
2747 if (type.BaseType != null)
2748 BaseType = GetTypeHandle (type.BaseType);
2749 this.is_interface = type.IsInterface;
2750 this.member_cache = new MemberCache (this);
2753 // IMemberContainer methods
2755 public string Name {
2757 return type.FullName;
2767 public IMemberContainer Parent {
2773 public bool IsInterface {
2775 return is_interface;
2779 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2781 MemberInfo [] members;
2782 if (mt == MemberTypes.Event)
2783 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2785 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2787 Array.Reverse (members);
2789 return new MemberList (members);
2792 // IMemberFinder methods
2794 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2795 MemberFilter filter, object criteria)
2797 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2800 public MemberCache MemberCache {
2802 return member_cache;
2806 public override string ToString ()
2808 if (BaseType != null)
2809 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2811 return "TypeHandle (" + id + "," + Name + ")";