2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
6 // Marek Safar (marek.safar@seznam.cz)
8 // Licensed under the terms of the GNU GPL
10 // (C) 2001 Ximian, Inc (http://www.ximian.com)
15 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
16 // the behavior of the compilation. This can be removed if we rework
17 // the code to get a list of namespaces available.
19 #define SIMPLE_SPEEDUP
23 using System.Globalization;
24 using System.Collections;
25 using System.Reflection;
26 using System.Reflection.Emit;
28 using System.Text.RegularExpressions;
29 using System.Runtime.CompilerServices;
30 using System.Diagnostics;
32 namespace Mono.CSharp {
34 public partial class TypeManager {
36 // A list of core types that the compiler requires or uses
38 static public Type object_type;
39 static public Type value_type;
40 static public Type string_type;
41 static public Type int32_type;
42 static public Type uint32_type;
43 static public Type int64_type;
44 static public Type uint64_type;
45 static public Type float_type;
46 static public Type double_type;
47 static public Type char_type;
48 static public Type char_ptr_type;
49 static public Type short_type;
50 static public Type decimal_type;
51 static public Type bool_type;
52 static public Type sbyte_type;
53 static public Type byte_type;
54 static public Type ushort_type;
55 static public Type enum_type;
56 static public Type delegate_type;
57 static public Type multicast_delegate_type;
58 static public Type void_type;
59 static public Type null_type;
60 static public Type enumeration_type;
61 static public Type array_type;
62 static public Type runtime_handle_type;
63 static public Type icloneable_type;
64 static public Type type_type;
65 static public Type ienumerator_type;
66 static public Type ienumerable_type;
67 static public Type idisposable_type;
68 static public Type iconvertible_type;
69 static public Type default_member_type;
70 static public Type iasyncresult_type;
71 static public Type asynccallback_type;
72 static public Type intptr_type;
73 static public Type monitor_type;
74 static public Type runtime_field_handle_type;
75 static public Type runtime_argument_handle_type;
76 static public Type attribute_type;
77 static public Type attribute_usage_type;
78 static public Type decimal_constant_attribute_type;
79 static public Type dllimport_type;
80 static public Type unverifiable_code_type;
81 static public Type methodimpl_attr_type;
82 static public Type marshal_as_attr_type;
83 static public Type param_array_type;
84 static public Type void_ptr_type;
85 static public Type indexer_name_type;
86 static public Type exception_type;
87 static public Type invalid_operation_exception_type;
88 static public Type not_supported_exception_type;
89 static public Type obsolete_attribute_type;
90 static public Type conditional_attribute_type;
91 static public Type in_attribute_type;
92 static public Type out_attribute_type;
93 static public Type anonymous_method_type;
94 static public Type cls_compliant_attribute_type;
95 static public Type typed_reference_type;
96 static public Type arg_iterator_type;
97 static public Type mbr_type;
98 static public Type struct_layout_attribute_type;
99 static public Type field_offset_attribute_type;
100 static public Type security_attr_type;
101 static public Type required_attr_type;
102 static public Type guid_attr_type;
103 static public Type assembly_culture_attribute_type;
104 static public Type coclass_attr_type;
105 static public Type comimport_attr_type;
110 static internal Type runtime_compatibility_attr_type;
111 static internal Type compiler_generated_attr_type;
112 static internal Type fixed_buffer_attr_type;
113 static internal Type default_charset_type;
114 static internal Type internals_visible_attr_type;
117 // Expressions representing the internal types. Used during declaration
120 static public TypeExpr system_object_expr, system_string_expr;
121 static public TypeExpr system_boolean_expr, system_decimal_expr;
122 static public TypeExpr system_single_expr, system_double_expr;
123 static public TypeExpr system_sbyte_expr, system_byte_expr;
124 static public TypeExpr system_int16_expr, system_uint16_expr;
125 static public TypeExpr system_int32_expr, system_uint32_expr;
126 static public TypeExpr system_int64_expr, system_uint64_expr;
127 static public TypeExpr system_char_expr, system_void_expr;
128 static public TypeExpr system_asynccallback_expr;
129 static public TypeExpr system_iasyncresult_expr;
130 static public TypeExpr system_valuetype_expr;
131 static public TypeExpr system_intptr_expr;
134 // This is only used when compiling corlib
136 static public Type system_int32_type;
137 static public Type system_array_type;
138 static public Type system_type_type;
139 static public Type system_assemblybuilder_type;
140 static public MethodInfo system_int_array_get_length;
141 static public MethodInfo system_int_array_get_rank;
142 static public MethodInfo system_object_array_clone;
143 static public MethodInfo system_int_array_get_length_int;
144 static public MethodInfo system_int_array_get_lower_bound_int;
145 static public MethodInfo system_int_array_get_upper_bound_int;
146 static public MethodInfo system_void_array_copyto_array_int;
150 // Internal, not really used outside
152 static Type runtime_helpers_type;
155 // These methods are called by code generated by the compiler
157 static public MethodInfo string_concat_string_string;
158 static public MethodInfo string_concat_string_string_string;
159 static public MethodInfo string_concat_string_string_string_string;
160 static public MethodInfo string_concat_string_dot_dot_dot;
161 static public MethodInfo string_concat_object_object;
162 static public MethodInfo string_concat_object_object_object;
163 static public MethodInfo string_concat_object_dot_dot_dot;
164 static public MethodInfo string_isinterneted_string;
165 static public MethodInfo system_type_get_type_from_handle;
166 static public MethodInfo bool_movenext_void;
167 static public MethodInfo ienumerable_getenumerator_void;
168 static public MethodInfo void_reset_void;
169 static public MethodInfo void_dispose_void;
170 static public MethodInfo void_monitor_enter_object;
171 static public MethodInfo void_monitor_exit_object;
172 static public MethodInfo void_initializearray_array_fieldhandle;
173 static public MethodInfo int_getlength_int;
174 static public MethodInfo delegate_combine_delegate_delegate;
175 static public MethodInfo delegate_remove_delegate_delegate;
176 static public MethodInfo int_get_offset_to_string_data;
177 static public MethodInfo int_array_get_length;
178 static public MethodInfo int_array_get_rank;
179 static public MethodInfo object_array_clone;
180 static public MethodInfo int_array_get_length_int;
181 static public MethodInfo int_array_get_lower_bound_int;
182 static public MethodInfo int_array_get_upper_bound_int;
183 static public MethodInfo void_array_copyto_array_int;
184 static public PropertyInfo ienumerator_getcurrent;
187 // The attribute constructors.
189 static public ConstructorInfo object_ctor;
190 static private ConstructorInfo cons_param_array_attribute;
191 static public ConstructorInfo void_decimal_ctor_five_args;
192 static public ConstructorInfo void_decimal_ctor_int_arg;
193 static public ConstructorInfo unverifiable_code_ctor;
194 static public ConstructorInfo default_member_ctor;
195 static public ConstructorInfo decimal_constant_attribute_ctor;
196 static internal ConstructorInfo struct_layout_attribute_ctor;
197 static public ConstructorInfo field_offset_attribute_ctor;
202 static internal CustomAttributeBuilder compiler_generated_attr;
203 static internal ConstructorInfo fixed_buffer_attr_ctor;
205 static PtrHashtable builder_to_declspace;
207 static PtrHashtable builder_to_member_cache;
210 // Tracks the interfaces implemented by typebuilders. We only
211 // enter those who do implement or or more interfaces
213 static PtrHashtable builder_to_ifaces;
216 // Maps PropertyBuilder to a Type array that contains
217 // the arguments to the indexer
219 static Hashtable indexer_arguments;
222 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
224 static Hashtable method_params;
227 // A hash table from override methods to their base virtual method.
229 static Hashtable method_overrides;
232 // Keeps track of methods
235 static Hashtable builder_to_method;
238 // Contains all public types from referenced assemblies.
239 // This member is used only if CLS Compliance verification is required.
241 public static Hashtable AllClsTopLevelTypes;
243 static Hashtable fieldbuilders_to_fields;
244 static Hashtable fields;
246 static PtrHashtable assembly_internals_vis_attrs;
253 public static void CleanUp ()
255 // Lets get everything clean so that we can collect before generating code
256 builder_to_declspace = null;
257 builder_to_member_cache = null;
258 builder_to_ifaces = null;
259 indexer_arguments = null;
260 method_params = null;
261 builder_to_method = null;
264 fieldbuilders_to_fields = null;
266 priv_fields_events = null;
270 assembly_internals_vis_attrs = null;
273 TypeHandle.CleanUp ();
277 /// A filter for Findmembers that uses the Signature object to
280 static bool SignatureFilter (MemberInfo mi, object criteria)
282 Signature sig = (Signature) criteria;
284 if (!(mi is MethodBase))
287 if (mi.Name != sig.name)
290 int count = sig.args.Length;
292 if (mi is MethodBuilder || mi is ConstructorBuilder){
293 Type [] candidate_args = GetParameterData ((MethodBase) mi).Types;
295 if (candidate_args.Length != count)
298 for (int i = 0; i < count; i++)
299 if (candidate_args [i] != sig.args [i])
304 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
306 if (pars.Length != count)
309 for (int i = 0; i < count; i++)
310 if (pars [i].ParameterType != sig.args [i])
316 // A delegate that points to the filter above.
317 static MemberFilter signature_filter;
320 // These are expressions that represent some of the internal data types, used
323 static void InitExpressionTypes ()
325 system_object_expr = new TypeLookupExpression ("System.Object");
326 system_string_expr = new TypeLookupExpression ("System.String");
327 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
328 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
329 system_single_expr = new TypeLookupExpression ("System.Single");
330 system_double_expr = new TypeLookupExpression ("System.Double");
331 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
332 system_byte_expr = new TypeLookupExpression ("System.Byte");
333 system_int16_expr = new TypeLookupExpression ("System.Int16");
334 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
335 system_int32_expr = new TypeLookupExpression ("System.Int32");
336 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
337 system_int64_expr = new TypeLookupExpression ("System.Int64");
338 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
339 system_char_expr = new TypeLookupExpression ("System.Char");
340 system_void_expr = new TypeLookupExpression ("System.Void");
341 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
342 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
343 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
344 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
347 static TypeManager ()
351 signature_filter = new MemberFilter (SignatureFilter);
352 InitExpressionTypes ();
355 static public void Reset ()
357 builder_to_declspace = new PtrHashtable ();
358 builder_to_member_cache = new PtrHashtable ();
359 builder_to_method = new PtrHashtable ();
360 method_params = new PtrHashtable ();
361 method_overrides = new PtrHashtable ();
362 indexer_arguments = new PtrHashtable ();
363 builder_to_ifaces = new PtrHashtable ();
365 fieldbuilders_to_fields = new Hashtable ();
366 fields = new Hashtable ();
367 type_hash = new DoubleHash ();
369 assembly_internals_vis_attrs = new PtrHashtable ();
373 // to uncover regressions
374 cons_param_array_attribute = null;
377 public static void AddUserType (DeclSpace ds)
379 builder_to_declspace.Add (ds.TypeBuilder, ds);
383 // This entry point is used by types that we define under the covers
385 public static void RegisterBuilder (Type tb, Type [] ifaces)
388 builder_to_ifaces [tb] = ifaces;
391 public static void AddMethod (MethodBase builder, IMethodData method)
393 builder_to_method.Add (builder, method);
394 method_params.Add (builder, method.ParameterInfo);
397 public static IMethodData GetMethod (MethodBase builder)
399 return (IMethodData) builder_to_method [builder];
403 /// Returns the DeclSpace whose Type is `t' or null if there is no
404 /// DeclSpace for `t' (ie, the Type comes from a library)
406 public static DeclSpace LookupDeclSpace (Type t)
408 return builder_to_declspace [t] as DeclSpace;
412 /// Returns the TypeContainer whose Type is `t' or null if there is no
413 /// TypeContainer for `t' (ie, the Type comes from a library)
415 public static TypeContainer LookupTypeContainer (Type t)
417 return builder_to_declspace [t] as TypeContainer;
420 public static MemberCache LookupMemberCache (Type t)
422 if (t is TypeBuilder) {
423 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
424 if (container != null)
425 return container.MemberCache;
428 if (t is GenericTypeParameterBuilder) {
429 IMemberContainer container = builder_to_type_param [t] as IMemberContainer;
431 if (container != null)
432 return container.MemberCache;
435 return TypeHandle.GetMemberCache (t);
438 public static MemberCache LookupBaseInterfacesCache (Type t)
440 Type [] ifaces = GetInterfaces (t);
442 if (ifaces != null && ifaces.Length == 1)
443 return LookupMemberCache (ifaces [0]);
445 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
446 MemberCache cache = builder_to_member_cache [t] as MemberCache;
450 cache = new MemberCache (ifaces);
451 builder_to_member_cache.Add (t, cache);
455 public static TypeContainer LookupInterface (Type t)
457 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
458 if ((tc == null) || (tc.Kind != Kind.Interface))
464 public static Delegate LookupDelegate (Type t)
466 return builder_to_declspace [t] as Delegate;
469 public static Class LookupClass (Type t)
471 return (Class) builder_to_declspace [t];
475 // We use this hash for multiple kinds of constructed types:
477 // (T, "&") Given T, get T &
478 // (T, "*") Given T, get T *
479 // (T, "[]") Given T and a array dimension, get T []
480 // (T, X) Given a type T and a simple name X, get the type T+X
482 // Accessibility tests, if necessary, should be done by the user
484 static DoubleHash type_hash = new DoubleHash ();
487 // Gets the reference to T version of the Type (T&)
489 public static Type GetReferenceType (Type t)
491 return t.MakeByRefType ();
495 // Gets the pointer to T version of the Type (T*)
497 public static Type GetPointerType (Type t)
499 return GetConstructedType (t, "*");
502 public static Type GetConstructedType (Type t, string dim)
505 if (type_hash.Lookup (t, dim, out ret))
508 ret = t.Module.GetType (t.ToString () + dim);
510 type_hash.Insert (t, dim, ret);
515 ret = GetReferenceType (t);
516 type_hash.Insert (t, dim, ret);
520 if (t.IsGenericParameter || t.IsGenericType) {
523 while ((pos < dim.Length) && (dim [pos] == '[')) {
526 if (dim [pos] == ']') {
527 result = result.MakeArrayType ();
530 if (pos < dim.Length)
533 type_hash.Insert (t, dim, result);
538 while (dim [pos] == ',') {
542 if ((dim [pos] != ']') || (pos != dim.Length-1))
545 result = result.MakeArrayType (rank + 1);
546 type_hash.Insert (t, dim, result);
551 type_hash.Insert (t, dim, null);
555 public static Type GetNestedType (Type t, string name)
558 if (!type_hash.Lookup (t, name, out ret)) {
559 ret = t.GetNestedType (name,
560 BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
561 type_hash.Insert (t, name, ret);
567 /// Fills static table with exported types from all referenced assemblies.
568 /// This information is required for CLS Compliance tests.
570 public static void LoadAllImportedTypes ()
572 AllClsTopLevelTypes = new Hashtable (1500);
573 foreach (Assembly a in RootNamespace.Global.Assemblies) {
574 foreach (Type t in a.GetExportedTypes ()) {
575 AllClsTopLevelTypes [t.FullName.ToLower (System.Globalization.CultureInfo.InvariantCulture)] = null;
580 public static bool NamespaceClash (string name, Location loc)
582 if (! RootNamespace.Global.IsNamespace (name))
585 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
590 /// Returns the C# name of a type if possible, or the full type name otherwise
592 static public string CSharpName (Type t)
594 if (IsNullableType (t) && !t.IsGenericTypeDefinition) {
595 t = GetTypeArguments (t) [0];
596 return CSharpName (t) + "?";
599 string name = GetFullName (t);
601 return Regex.Replace (name,
603 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
604 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
605 @"Boolean|String|Void|Null)" +
607 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
610 static public string CSharpName (Type[] types)
612 StringBuilder sb = new StringBuilder ();
613 foreach (Type t in types) {
614 sb.Append (CSharpName (t));
617 sb.Remove (sb.Length - 1, 1);
618 return sb.ToString ();
621 static String CSharpNameMatch (Match match)
623 string s = match.Groups [1].Captures [0].Value;
625 Replace ("int32", "int").
626 Replace ("uint32", "uint").
627 Replace ("int16", "short").
628 Replace ("uint16", "ushort").
629 Replace ("int64", "long").
630 Replace ("uint64", "ulong").
631 Replace ("single", "float").
632 Replace ("boolean", "bool")
633 + match.Groups [2].Captures [0].Value;
637 /// Returns the signature of the method with full namespace classification
639 static public string GetFullNameSignature (MemberInfo mi)
641 PropertyInfo pi = mi as PropertyInfo;
643 MethodBase pmi = pi.GetGetMethod (true);
645 pmi = pi.GetSetMethod (true);
646 if (GetParameterData (pmi).Count > 0)
649 return (mi is MethodBase)
650 ? CSharpSignature (mi as MethodBase)
651 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
654 private static int GetFullName (Type t, StringBuilder sb)
658 if (!t.IsGenericType) {
659 sb.Append (t.FullName);
663 if (t.DeclaringType != null) {
664 pos = GetFullName (t.DeclaringType, sb);
666 sb.Append (RemoveGenericArity (t.Name));
668 sb.Append (RemoveGenericArity (t.FullName));
671 Type[] this_args = GetTypeArguments (t);
673 if (this_args.Length < pos)
674 throw new InternalErrorException (
675 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
676 if (this_args.Length == pos)
681 sb.Append (CSharpName (this_args [pos++]));
682 if (pos == this_args.Length)
690 public static string GetFullName (Type t)
692 if (t.IsGenericParameter)
694 if (!t.IsGenericType)
697 StringBuilder sb = new StringBuilder ();
698 int pos = GetFullName (t, sb);
700 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
701 return sb.ToString ();
704 static string RemoveGenericArity (string from)
706 int i = from.IndexOf ('`');
708 return from.Substring (0, i);
713 /// When we need to report accessors as well
715 static public string CSharpSignature (MethodBase mb)
717 return CSharpSignature (mb, false);
721 /// Returns the signature of the method
723 static public string CSharpSignature (MethodBase mb, bool show_accessor)
725 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
728 ParameterData iparams = GetParameterData (mb);
729 string parameters = iparams.GetSignatureForError ();
730 string accessor = "";
733 if (mb.IsSpecialName) {
734 Operator.OpType ot = Operator.GetOperatorType (mb.Name);
735 if (ot != Operator.OpType.TOP) {
736 sig.Append ("operator ");
737 sig.Append (Operator.GetName (ot));
738 sig.Append (parameters);
739 return sig.ToString ();
742 if (mb.Name.StartsWith ("get_") || mb.Name.StartsWith ("set_")) {
743 accessor = mb.Name.Substring (0, 3);
748 if (mb.IsSpecialName && !mb.IsConstructor) {
749 if (iparams.Count > (mb.Name.StartsWith ("get_") ? 0 : 1)) {
750 sig.Append ("this[");
752 sig.Append (parameters.Substring (1, parameters.Length - 2));
755 int before_ret_val = parameters.LastIndexOf (',');
756 if (before_ret_val < 0)
757 sig.Append (parameters.Substring (1, parameters.Length - 2));
759 sig.Append (parameters.Substring (1, before_ret_val - 1));
763 sig.Append (mb.Name.Substring (4));
766 if (mb.Name == ".ctor")
767 sig.Append (mb.DeclaringType.Name);
769 sig.Append (mb.Name);
771 if (TypeManager.IsGenericMethod (mb)) {
772 Type[] args = mb.GetGenericArguments ();
774 for (int i = 0; i < args.Length; i++) {
777 sig.Append (args [i].Name);
783 sig.Append (parameters);
786 if (show_accessor && accessor.Length > 0) {
788 sig.Append (accessor);
791 return sig.ToString ();
794 public static string GetMethodName (MethodInfo m)
796 if (!IsGenericMethodDefinition (m) && !IsGenericMethod (m))
799 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
802 static public string CSharpSignature (EventInfo ei)
804 return CSharpName (ei.DeclaringType) + '.' + ei.Name;
808 /// Looks up a type, and aborts if it is not found. This is used
809 /// by types required by the compiler
811 static Type CoreLookupType (string ns_name, string name)
813 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
814 FullNamedExpression fne = ns.Lookup (RootContext.Tree.Types, name, Location.Null);
815 Type t = fne == null ? null : fne.Type;
817 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
822 /// Returns the MethodInfo for a method named `name' defined
823 /// in type `t' which takes arguments of types `args'
825 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
829 BindingFlags flags = instance_and_static | BindingFlags.Public;
835 flags |= BindingFlags.NonPublic;
837 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
838 if (list.Count == 0) {
840 Report.Error (-19, "Can not find the core function `" + name + "'");
844 MethodInfo mi = list [0] as MethodInfo;
847 Report.Error (-19, "Can not find the core function `" + name + "'");
854 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
856 return GetMethod (t, name, args, false, report_errors);
859 static MethodInfo GetMethod (Type t, string name, Type [] args)
861 return GetMethod (t, name, args, true);
865 /// Returns the PropertyInfo for a property named `name' defined
868 public static PropertyInfo GetProperty (Type t, string name)
870 MemberList list = FindMembers (t, MemberTypes.Property, BindingFlags.Public |
871 BindingFlags.Instance, Type.FilterName, name);
872 if (list.Count == 0) {
873 Report.Error (-19, "Can not find the core property `" + name + "'");
877 PropertyInfo pi = list [0] as PropertyInfo;
879 Report.Error (-19, "Can not find the core function `" + name + "'");
887 /// Returns the ConstructorInfo for "args"
889 public static ConstructorInfo GetConstructor (Type t, Type [] args)
898 throw new InternalErrorException ("Core types haven't been initialized yet?");
900 list = FindMembers (t, MemberTypes.Constructor,
901 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
902 signature_filter, sig);
903 if (list.Count == 0){
904 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
908 ConstructorInfo ci = list [0] as ConstructorInfo;
910 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
917 public static void InitEnumUnderlyingTypes ()
920 int32_type = CoreLookupType ("System", "Int32");
921 int64_type = CoreLookupType ("System", "Int64");
922 uint32_type = CoreLookupType ("System", "UInt32");
923 uint64_type = CoreLookupType ("System", "UInt64");
924 byte_type = CoreLookupType ("System", "Byte");
925 sbyte_type = CoreLookupType ("System", "SByte");
926 short_type = CoreLookupType ("System", "Int16");
927 ushort_type = CoreLookupType ("System", "UInt16");
931 /// The types have to be initialized after the initial
932 /// population of the type has happened (for example, to
933 /// bootstrap the corlib.dll
935 public static void InitCoreTypes ()
937 object_type = CoreLookupType ("System", "Object");
938 value_type = CoreLookupType ("System", "ValueType");
940 InitEnumUnderlyingTypes ();
942 char_type = CoreLookupType ("System", "Char");
943 string_type = CoreLookupType ("System", "String");
944 float_type = CoreLookupType ("System", "Single");
945 double_type = CoreLookupType ("System", "Double");
946 char_ptr_type = GetPointerType (char_type);
947 decimal_type = CoreLookupType ("System", "Decimal");
948 bool_type = CoreLookupType ("System", "Boolean");
949 enum_type = CoreLookupType ("System", "Enum");
951 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate");
952 delegate_type = CoreLookupType ("System", "Delegate");
954 array_type = CoreLookupType ("System", "Array");
955 void_type = CoreLookupType ("System", "Void");
956 type_type = CoreLookupType ("System", "Type");
958 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle");
959 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle");
960 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers");
961 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute");
962 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle");
963 asynccallback_type = CoreLookupType ("System", "AsyncCallback");
964 iasyncresult_type = CoreLookupType ("System", "IAsyncResult");
965 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator");
966 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable");
967 idisposable_type = CoreLookupType ("System", "IDisposable");
968 icloneable_type = CoreLookupType ("System", "ICloneable");
969 iconvertible_type = CoreLookupType ("System", "IConvertible");
970 monitor_type = CoreLookupType ("System.Threading", "Monitor");
971 intptr_type = CoreLookupType ("System", "IntPtr");
973 attribute_type = CoreLookupType ("System", "Attribute");
974 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute");
975 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute");
976 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute");
977 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute");
978 param_array_type = CoreLookupType ("System", "ParamArrayAttribute");
979 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute");
980 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute");
981 typed_reference_type = CoreLookupType ("System", "TypedReference");
982 arg_iterator_type = CoreLookupType ("System", "ArgIterator");
983 mbr_type = CoreLookupType ("System", "MarshalByRefObject");
984 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute");
986 unverifiable_code_type= CoreLookupType ("System.Security", "UnverifiableCodeAttribute");
988 void_ptr_type = GetPointerType (void_type);
990 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute");
992 exception_type = CoreLookupType ("System", "Exception");
993 invalid_operation_exception_type = CoreLookupType ("System", "InvalidOperationException");
994 not_supported_exception_type = CoreLookupType ("System", "NotSupportedException");
999 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute");
1000 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute");
1001 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute");
1002 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute");
1003 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute");
1004 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute");
1005 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute");
1006 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute");
1007 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute");
1008 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute");
1009 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute");
1011 InitGenericCoreTypes ();
1016 compiler_generated_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "CompilerGeneratedAttribute");
1017 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute");
1018 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute");
1019 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute");
1020 runtime_compatibility_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeCompatibilityAttribute");
1022 // When compiling corlib, store the "real" types here.
1024 if (!RootContext.StdLib) {
1025 system_int32_type = typeof (System.Int32);
1026 system_array_type = typeof (System.Array);
1027 system_type_type = typeof (System.Type);
1028 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1030 system_int_array_get_length = GetMethod (
1031 system_array_type, "get_Length", Type.EmptyTypes);
1032 system_int_array_get_rank = GetMethod (
1033 system_array_type, "get_Rank", Type.EmptyTypes);
1034 system_object_array_clone = GetMethod (
1035 system_array_type, "Clone", Type.EmptyTypes);
1037 Type [] system_int_arg = { system_int32_type };
1038 system_int_array_get_length_int = GetMethod (
1039 system_array_type, "GetLength", system_int_arg);
1040 system_int_array_get_upper_bound_int = GetMethod (
1041 system_array_type, "GetUpperBound", system_int_arg);
1042 system_int_array_get_lower_bound_int = GetMethod (
1043 system_array_type, "GetLowerBound", system_int_arg);
1045 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1046 system_void_array_copyto_array_int = GetMethod (
1047 system_array_type, "CopyTo", system_array_int_arg);
1049 Type [] system_3_type_arg = {
1050 system_type_type, system_type_type, system_type_type };
1051 Type [] system_4_type_arg = {
1052 system_type_type, system_type_type, system_type_type, system_type_type };
1054 MethodInfo set_corlib_type_builders = GetMethod (
1055 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1056 system_4_type_arg, true, false);
1058 if (set_corlib_type_builders != null) {
1059 object[] args = new object [4];
1060 args [0] = object_type;
1061 args [1] = value_type;
1062 args [2] = enum_type;
1063 args [3] = void_type;
1065 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1067 // Compatibility for an older version of the class libs.
1068 set_corlib_type_builders = GetMethod (
1069 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1070 system_3_type_arg, true, true);
1072 if (set_corlib_type_builders == null) {
1073 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1077 object[] args = new object [3];
1078 args [0] = object_type;
1079 args [1] = value_type;
1080 args [2] = enum_type;
1082 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1086 system_object_expr.Type = object_type;
1087 system_string_expr.Type = string_type;
1088 system_boolean_expr.Type = bool_type;
1089 system_decimal_expr.Type = decimal_type;
1090 system_single_expr.Type = float_type;
1091 system_double_expr.Type = double_type;
1092 system_sbyte_expr.Type = sbyte_type;
1093 system_byte_expr.Type = byte_type;
1094 system_int16_expr.Type = short_type;
1095 system_uint16_expr.Type = ushort_type;
1096 system_int32_expr.Type = int32_type;
1097 system_uint32_expr.Type = uint32_type;
1098 system_int64_expr.Type = int64_type;
1099 system_uint64_expr.Type = uint64_type;
1100 system_char_expr.Type = char_type;
1101 system_void_expr.Type = void_type;
1102 system_asynccallback_expr.Type = asynccallback_type;
1103 system_iasyncresult_expr.Type = iasyncresult_type;
1104 system_valuetype_expr.Type = value_type;
1107 // These are only used for compare purposes
1109 anonymous_method_type = typeof (AnonymousMethod);
1110 null_type = typeof (NullType);
1114 // The helper methods that are used by the compiler
1116 public static void InitCodeHelpers ()
1119 // Now load the default methods that we use.
1121 Type [] string_string = { string_type, string_type };
1122 string_concat_string_string = GetMethod (
1123 string_type, "Concat", string_string);
1124 Type [] string_string_string = { string_type, string_type, string_type };
1125 string_concat_string_string_string = GetMethod (
1126 string_type, "Concat", string_string_string);
1127 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1128 string_concat_string_string_string_string = GetMethod (
1129 string_type, "Concat", string_string_string_string);
1130 Type[] params_string = { GetConstructedType (string_type, "[]") };
1131 string_concat_string_dot_dot_dot = GetMethod (
1132 string_type, "Concat", params_string);
1134 Type [] object_object = { object_type, object_type };
1135 string_concat_object_object = GetMethod (
1136 string_type, "Concat", object_object);
1137 Type [] object_object_object = { object_type, object_type, object_type };
1138 string_concat_object_object_object = GetMethod (
1139 string_type, "Concat", object_object_object);
1140 Type[] params_object = { GetConstructedType (object_type, "[]") };
1141 string_concat_object_dot_dot_dot = GetMethod (
1142 string_type, "Concat", params_object);
1144 Type [] string_ = { string_type };
1145 string_isinterneted_string = GetMethod (
1146 string_type, "IsInterned", string_);
1148 Type [] runtime_type_handle = { runtime_handle_type };
1149 system_type_get_type_from_handle = GetMethod (
1150 type_type, "GetTypeFromHandle", runtime_type_handle);
1152 Type [] delegate_delegate = { delegate_type, delegate_type };
1153 delegate_combine_delegate_delegate = GetMethod (
1154 delegate_type, "Combine", delegate_delegate);
1156 delegate_remove_delegate_delegate = GetMethod (
1157 delegate_type, "Remove", delegate_delegate);
1162 ienumerator_getcurrent = GetProperty (
1163 ienumerator_type, "Current");
1164 bool_movenext_void = GetMethod (
1165 ienumerator_type, "MoveNext", Type.EmptyTypes);
1166 void_reset_void = GetMethod (
1167 ienumerator_type, "Reset", Type.EmptyTypes);
1168 void_dispose_void = GetMethod (
1169 idisposable_type, "Dispose", Type.EmptyTypes);
1170 int_get_offset_to_string_data = GetMethod (
1171 runtime_helpers_type, "get_OffsetToStringData", Type.EmptyTypes);
1172 int_array_get_length = GetMethod (
1173 array_type, "get_Length", Type.EmptyTypes);
1174 int_array_get_rank = GetMethod (
1175 array_type, "get_Rank", Type.EmptyTypes);
1176 ienumerable_getenumerator_void = GetMethod (
1177 ienumerable_type, "GetEnumerator", Type.EmptyTypes);
1182 Type [] int_arg = { int32_type };
1183 int_array_get_length_int = GetMethod (
1184 array_type, "GetLength", int_arg);
1185 int_array_get_upper_bound_int = GetMethod (
1186 array_type, "GetUpperBound", int_arg);
1187 int_array_get_lower_bound_int = GetMethod (
1188 array_type, "GetLowerBound", int_arg);
1191 // System.Array methods
1193 object_array_clone = GetMethod (
1194 array_type, "Clone", Type.EmptyTypes);
1195 Type [] array_int_arg = { array_type, int32_type };
1196 void_array_copyto_array_int = GetMethod (
1197 array_type, "CopyTo", array_int_arg);
1202 Type [] object_arg = { object_type };
1203 void_monitor_enter_object = GetMethod (
1204 monitor_type, "Enter", object_arg);
1205 void_monitor_exit_object = GetMethod (
1206 monitor_type, "Exit", object_arg);
1208 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1210 void_initializearray_array_fieldhandle = GetMethod (
1211 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1216 int_getlength_int = GetMethod (
1217 array_type, "GetLength", int_arg);
1220 // Decimal constructors
1222 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1223 void_decimal_ctor_five_args = GetConstructor (
1224 decimal_type, dec_arg);
1226 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1231 unverifiable_code_ctor = GetConstructor (unverifiable_code_type, Type.EmptyTypes);
1232 default_member_ctor = GetConstructor (default_member_type, string_);
1234 Type[] short_arg = { short_type };
1235 struct_layout_attribute_ctor = GetConstructor (struct_layout_attribute_type, short_arg);
1237 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1238 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1240 field_offset_attribute_ctor = GetConstructor (field_offset_attribute_type, new Type []
1246 compiler_generated_attr = new CustomAttributeBuilder (
1247 GetConstructor (compiler_generated_attr_type, Type.EmptyTypes), new object[0]);
1249 Type[] type_int_arg = { type_type, int32_type };
1250 fixed_buffer_attr_ctor = GetConstructor (fixed_buffer_attr_type, type_int_arg);
1253 object_ctor = GetConstructor (object_type, Type.EmptyTypes);
1255 InitGenericCodeHelpers ();
1258 static public ConstructorInfo ConsParamArrayAttribute {
1260 if (cons_param_array_attribute == null)
1261 cons_param_array_attribute = GetConstructor (param_array_type, Type.EmptyTypes);
1262 return cons_param_array_attribute;
1266 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1269 /// This is the "old", non-cache based FindMembers() function. We cannot use
1270 /// the cache here because there is no member name argument.
1272 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1273 MemberFilter filter, object criteria)
1275 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1278 // `builder_to_declspace' contains all dynamic types.
1282 Timer.StartTimer (TimerType.FindMembers);
1283 list = decl.FindMembers (mt, bf, filter, criteria);
1284 Timer.StopTimer (TimerType.FindMembers);
1289 // We have to take care of arrays specially, because GetType on
1290 // a TypeBuilder array will return a Type, not a TypeBuilder,
1291 // and we can not call FindMembers on this type.
1297 t.IsSubclassOf (TypeManager.array_type))
1298 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1300 if (t is GenericTypeParameterBuilder) {
1301 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1303 Timer.StartTimer (TimerType.FindMembers);
1304 MemberList list = tparam.FindMembers (
1305 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1306 Timer.StopTimer (TimerType.FindMembers);
1311 // Since FindMembers will not lookup both static and instance
1312 // members, we emulate this behaviour here.
1314 if ((bf & instance_and_static) == instance_and_static){
1315 MemberInfo [] i_members = t.FindMembers (
1316 mt, bf & ~BindingFlags.Static, filter, criteria);
1318 int i_len = i_members.Length;
1320 MemberInfo one = i_members [0];
1323 // If any of these are present, we are done!
1325 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1326 return new MemberList (i_members);
1329 MemberInfo [] s_members = t.FindMembers (
1330 mt, bf & ~BindingFlags.Instance, filter, criteria);
1332 int s_len = s_members.Length;
1333 if (i_len > 0 || s_len > 0)
1334 return new MemberList (i_members, s_members);
1337 return new MemberList (i_members);
1339 return new MemberList (s_members);
1343 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1348 /// This method is only called from within MemberLookup. It tries to use the member
1349 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1350 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1351 /// our return value will already contain all inherited members and the caller don't need
1352 /// to check base classes and interfaces anymore.
1354 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1355 string name, out bool used_cache)
1360 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1361 // and we can ask the DeclSpace for the MemberCache.
1363 if (t is TypeBuilder) {
1364 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1365 cache = decl.MemberCache;
1368 // If this DeclSpace has a MemberCache, use it.
1371 if (cache != null) {
1373 return cache.FindMembers (
1374 mt, bf, name, FilterWithClosure_delegate, null);
1377 // If there is no MemberCache, we need to use the "normal" FindMembers.
1378 // Note, this is a VERY uncommon route!
1381 Timer.StartTimer (TimerType.FindMembers);
1382 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1383 FilterWithClosure_delegate, name);
1384 Timer.StopTimer (TimerType.FindMembers);
1386 return (MemberInfo []) list;
1390 // We have to take care of arrays specially, because GetType on
1391 // a TypeBuilder array will return a Type, not a TypeBuilder,
1392 // and we can not call FindMembers on this type.
1394 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1396 return TypeHandle.ArrayType.MemberCache.FindMembers (
1397 mt, bf, name, FilterWithClosure_delegate, null);
1400 if (t is GenericTypeParameterBuilder) {
1401 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1404 Timer.StartTimer (TimerType.FindMembers);
1405 list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1406 FilterWithClosure_delegate, name);
1407 Timer.StopTimer (TimerType.FindMembers);
1409 return (MemberInfo []) list;
1412 if (t.IsGenericType && (mt == MemberTypes.NestedType)) {
1414 // This happens if we're resolving a class'es base class and interfaces
1415 // in TypeContainer.DefineType(). At this time, the types aren't
1416 // populated yet, so we can't use the cache.
1418 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1419 FilterWithClosure_delegate, name);
1425 // This call will always succeed. There is exactly one TypeHandle instance per
1426 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1427 // the corresponding MemberCache.
1429 cache = TypeHandle.GetMemberCache (t);
1432 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1435 public static bool IsBuiltinType (Type t)
1437 t = TypeToCoreType (t);
1438 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1439 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1440 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1441 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1447 public static bool IsBuiltinType (TypeContainer tc)
1449 return IsBuiltinType (tc.TypeBuilder);
1453 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1454 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1456 public static bool IsPrimitiveType (Type t)
1458 return (t == int32_type || t == uint32_type ||
1459 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1460 t == char_type || t == short_type || t == bool_type ||
1461 t == sbyte_type || t == byte_type || t == ushort_type);
1464 public static bool IsDelegateType (Type t)
1466 t = DropGenericTypeArguments (t);
1467 if (t.IsSubclassOf (TypeManager.delegate_type))
1473 public static bool IsEnumType (Type t)
1475 if (builder_to_declspace [t] is Enum)
1481 public static bool IsBuiltinOrEnum (Type t)
1483 if (IsBuiltinType (t))
1492 public static bool IsNullType (Type t)
1494 return t == null_type;
1497 public static bool IsAttributeType (Type t)
1499 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1502 static Stack unmanaged_enclosing_types = new Stack (4);
1505 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1507 public static bool IsUnmanagedType (Type t)
1509 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1510 if (unmanaged_enclosing_types.Contains (t))
1513 // builtins that are not unmanaged types
1514 if (t == TypeManager.object_type || t == TypeManager.string_type)
1517 if (IsBuiltinOrEnum (t))
1520 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1524 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1528 if (!IsValueType (t))
1531 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1532 if (p.IsGenericTypeDefinition)
1536 unmanaged_enclosing_types.Push (t);
1540 if (t is TypeBuilder) {
1541 TypeContainer tc = LookupTypeContainer (t);
1542 if (tc.Fields != null){
1543 foreach (FieldMember f in tc.Fields){
1544 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1545 if ((f.ModFlags & Modifiers.STATIC) != 0)
1547 if (f.MemberType == null)
1549 if (!IsUnmanagedType (f.MemberType)){
1550 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1556 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1558 foreach (FieldInfo f in fields){
1559 if (!IsUnmanagedType (f.FieldType)){
1560 Report.SymbolRelatedToPreviousError (f);
1566 unmanaged_enclosing_types.Pop ();
1571 public static bool IsValueType (Type t)
1573 return t.IsGenericParameter || t.IsValueType;
1576 public static bool IsInterfaceType (Type t)
1578 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1582 return tc.Kind == Kind.Interface;
1585 public static bool IsSubclassOf (Type type, Type base_type)
1587 TypeParameter tparam = LookupTypeParameter (type);
1588 TypeParameter pparam = LookupTypeParameter (base_type);
1590 if ((tparam != null) && (pparam != null)) {
1591 if (tparam == pparam)
1594 return tparam.IsSubclassOf (base_type);
1597 if (type.IsSubclassOf (base_type))
1601 if (IsEqual (type, base_type))
1604 type = type.BaseType;
1605 } while (type != null);
1610 public static bool IsPrivateAccessible (Type type, Type parent)
1612 if (type.Equals (parent))
1614 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1617 public static bool IsFamilyAccessible (Type type, Type parent)
1619 TypeParameter tparam = LookupTypeParameter (type);
1620 TypeParameter pparam = LookupTypeParameter (parent);
1622 if ((tparam != null) && (pparam != null)) {
1623 if (tparam == pparam)
1626 return tparam.IsSubclassOf (parent);
1630 if (IsInstantiationOfSameGenericType (type, parent))
1633 type = type.BaseType;
1634 } while (type != null);
1640 // Checks whether `type' is a subclass or nested child of `base_type'.
1642 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1645 if (IsFamilyAccessible (type, base_type))
1648 // Handle nested types.
1649 type = type.DeclaringType;
1650 } while (type != null);
1656 // Checks whether `type' is a nested child of `parent'.
1658 public static bool IsNestedChildOf (Type type, Type parent)
1660 if (IsEqual (type, parent))
1663 type = type.DeclaringType;
1664 while (type != null) {
1665 if (IsEqual (type, parent))
1668 type = type.DeclaringType;
1675 // Checks whether `extern_type' is friend of the output assembly
1677 public static bool IsFriendAssembly (Assembly assembly)
1679 if (assembly_internals_vis_attrs.Contains (assembly))
1680 return (bool)(assembly_internals_vis_attrs [assembly]);
1682 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1683 if (attrs.Length == 0) {
1684 assembly_internals_vis_attrs.Add (assembly, false);
1688 AssemblyName this_name = CodeGen.Assembly.Name;
1689 byte [] this_token = this_name.GetPublicKeyToken ();
1690 bool is_friend = false;
1691 foreach (InternalsVisibleToAttribute attr in attrs) {
1692 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1695 AssemblyName aname = null;
1697 aname = new AssemblyName (attr.AssemblyName);
1698 } catch (FileLoadException) {
1699 } catch (ArgumentException) {
1702 if (aname == null || aname.Name != this_name.Name)
1705 byte [] key_token = aname.GetPublicKeyToken ();
1706 if (key_token != null) {
1707 if (this_token == null) {
1708 // Same name, but key token is null
1709 Error_FriendAccessNameNotMatching (aname.FullName);
1713 if (!CompareKeyTokens (this_token, key_token))
1721 assembly_internals_vis_attrs.Add (assembly, is_friend);
1725 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1727 for (int i = 0; i < token1.Length; i++)
1728 if (token1 [i] != token2 [i])
1734 static void Error_FriendAccessNameNotMatching (string other_name)
1736 Report.Error (281, "Friend access was granted to `" + other_name +
1737 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1738 "'. Try adding a reference to `" + other_name +
1739 "' or change the output assembly name to match it");
1743 // Do the right thing when returning the element type of an
1744 // array type based on whether we are compiling corlib or not
1746 public static Type GetElementType (Type t)
1748 if (RootContext.StdLib)
1749 return t.GetElementType ();
1751 return TypeToCoreType (t.GetElementType ());
1755 /// This method is not implemented by MS runtime for dynamic types
1757 public static bool HasElementType (Type t)
1759 return t.IsArray || t.IsPointer || t.IsByRef;
1763 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1767 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1768 /// for anything which is dynamic, and we need this in a number of places,
1769 /// we register this information here, and use it afterwards.
1771 static public void RegisterMethod (MethodBase mb, Parameters ip)
1773 method_params.Add (mb, ip);
1776 static public ParameterData GetParameterData (MethodBase mb)
1778 ParameterData pd = (ParameterData)method_params [mb];
1780 if (mb is MethodBuilder || mb is ConstructorBuilder)
1781 throw new InternalErrorException ("Argument for Method not registered" + mb);
1783 pd = new ReflectionParameters (mb);
1784 method_params.Add (mb, pd);
1789 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1791 if (!method_overrides.Contains (override_method))
1792 method_overrides [override_method] = base_method;
1793 if (method_overrides [override_method] != base_method)
1794 throw new InternalErrorException ("Override mismatch: " + override_method);
1797 static public bool IsOverride (MethodBase m)
1799 m = DropGenericMethodArguments (m);
1801 return m.IsVirtual &&
1802 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1803 (m is MethodBuilder || method_overrides.Contains (m));
1806 static public MethodBase TryGetBaseDefinition (MethodBase m)
1808 return (MethodBase) method_overrides [m];
1812 /// Returns the argument types for an indexer based on its PropertyInfo
1814 /// For dynamic indexers, we use the compiler provided types, for
1815 /// indexers from existing assemblies we load them from GetParameters,
1816 /// and insert them into the cache
1818 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1820 if (indexer_arguments.Contains (indexer))
1821 return (Type []) indexer_arguments [indexer];
1822 else if (indexer is PropertyBuilder)
1823 // If we're a PropertyBuilder and not in the
1824 // `indexer_arguments' hash, then we're a property and
1826 return Type.EmptyTypes;
1828 ParameterInfo [] pi = indexer.GetIndexParameters ();
1829 // Property, not an indexer.
1831 return Type.EmptyTypes;
1833 Type [] types = new Type [c];
1835 for (int i = 0; i < c; i++)
1836 types [i] = pi [i].ParameterType;
1838 indexer_arguments.Add (indexer, types);
1843 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1845 fields.Add (fb, ic);
1848 public static IConstant GetConstant (FieldInfo fb)
1853 return (IConstant)fields [fb];
1856 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1858 if (fieldbuilders_to_fields.Contains (fb))
1861 fieldbuilders_to_fields.Add (fb, f);
1866 // The return value can be null; This will be the case for
1867 // auxiliary FieldBuilders created by the compiler that have no
1868 // real field being declared on the source code
1870 static public FieldBase GetField (FieldInfo fb)
1872 fb = GetGenericFieldDefinition (fb);
1873 return (FieldBase) fieldbuilders_to_fields [fb];
1876 static Hashtable events;
1878 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1881 events = new Hashtable ();
1883 if (!events.Contains (eb)) {
1884 events.Add (eb, new Pair (add, remove));
1888 static public MethodInfo GetAddMethod (EventInfo ei)
1890 if (ei is MyEventBuilder) {
1891 Pair pair = (Pair) events [ei];
1893 return (MethodInfo) pair.First;
1895 return ei.GetAddMethod (true);
1898 static public MethodInfo GetRemoveMethod (EventInfo ei)
1900 if (ei is MyEventBuilder) {
1901 Pair pair = (Pair) events [ei];
1903 return (MethodInfo) pair.Second;
1905 return ei.GetRemoveMethod (true);
1908 static Hashtable priv_fields_events;
1910 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1912 if (priv_fields_events == null)
1913 priv_fields_events = new Hashtable ();
1915 if (priv_fields_events.Contains (einfo))
1918 priv_fields_events.Add (einfo, builder);
1923 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1925 if (priv_fields_events == null)
1928 return (MemberInfo) priv_fields_events [ei];
1931 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1932 MethodBase set, Type[] args)
1934 indexer_arguments.Add (pb, args);
1939 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1941 Hashtable hash = new Hashtable ();
1942 return CheckStructCycles (tc, seen, hash);
1945 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1948 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1952 // `seen' contains all types we've already visited.
1954 if (seen.Contains (tc))
1956 seen.Add (tc, null);
1958 if (tc.Fields == null)
1961 foreach (FieldMember field in tc.Fields) {
1962 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1965 Type ftype = field.FieldBuilder.FieldType;
1966 TypeContainer ftc = LookupTypeContainer (ftype);
1970 if (hash.Contains (ftc)) {
1971 Report.Error (523, tc.Location,
1972 "Struct member `{0}.{1}' of type `{2}' " +
1973 "causes a cycle in the struct layout",
1974 tc.Name, field.Name, ftc.Name);
1979 // `hash' contains all types in the current path.
1981 hash.Add (tc, null);
1983 bool ok = CheckStructCycles (ftc, seen, hash);
1990 if (!seen.Contains (ftc))
1991 seen.Add (ftc, null);
1998 /// Given an array of interface types, expand and eliminate repeated ocurrences
1999 /// of an interface.
2003 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2006 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
2008 ArrayList new_ifaces = new ArrayList ();
2010 foreach (TypeExpr iface in base_interfaces){
2011 TypeExpr texpr = iface.ResolveAsTypeTerminal (ec, false);
2015 Type itype = texpr.ResolveType (ec);
2017 if (new_ifaces.Contains (itype))
2020 new_ifaces.Add (itype);
2022 Type [] implementing = GetInterfaces (itype);
2024 foreach (Type imp in implementing){
2025 if (!new_ifaces.Contains (imp))
2026 new_ifaces.Add (imp);
2029 Type [] ret = new Type [new_ifaces.Count];
2030 new_ifaces.CopyTo (ret, 0);
2034 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2036 ArrayList new_ifaces = new ArrayList ();
2038 foreach (Type itype in base_interfaces){
2039 if (new_ifaces.Contains (itype))
2042 new_ifaces.Add (itype);
2044 Type [] implementing = GetInterfaces (itype);
2046 foreach (Type imp in implementing){
2047 if (!new_ifaces.Contains (imp))
2048 new_ifaces.Add (imp);
2051 Type [] ret = new Type [new_ifaces.Count];
2052 new_ifaces.CopyTo (ret, 0);
2056 static PtrHashtable iface_cache = new PtrHashtable ();
2059 /// This function returns the interfaces in the type `t'. Works with
2060 /// both types and TypeBuilders.
2062 public static Type [] GetInterfaces (Type t)
2064 Type [] cached = iface_cache [t] as Type [];
2069 // The reason for catching the Array case is that Reflection.Emit
2070 // will not return a TypeBuilder for Array types of TypeBuilder types,
2071 // but will still throw an exception if we try to call GetInterfaces
2074 // Since the array interfaces are always constant, we return those for
2079 t = TypeManager.array_type;
2081 if ((t is TypeBuilder) || t.IsGenericType) {
2082 Type [] base_ifaces;
2084 if (t.BaseType == null)
2085 base_ifaces = Type.EmptyTypes;
2087 base_ifaces = GetInterfaces (t.BaseType);
2089 if (t.IsGenericType)
2090 type_ifaces = t.GetInterfaces ();
2092 type_ifaces = (Type []) builder_to_ifaces [t];
2093 if (type_ifaces == null)
2094 type_ifaces = Type.EmptyTypes;
2096 int base_count = base_ifaces.Length;
2097 Type [] result = new Type [base_count + type_ifaces.Length];
2098 base_ifaces.CopyTo (result, 0);
2099 type_ifaces.CopyTo (result, base_count);
2101 iface_cache [t] = result;
2103 } else if (t is GenericTypeParameterBuilder){
2104 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2105 if (type_ifaces == null)
2106 type_ifaces = Type.EmptyTypes;
2108 iface_cache [t] = type_ifaces;
2111 Type[] ifaces = t.GetInterfaces ();
2112 iface_cache [t] = ifaces;
2118 // gets the interfaces that are declared explicitly on t
2120 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2122 return (Type []) builder_to_ifaces [t];
2126 /// The following is used to check if a given type implements an interface.
2127 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2129 public static bool ImplementsInterface (Type t, Type iface)
2134 // FIXME OPTIMIZATION:
2135 // as soon as we hit a non-TypeBuiler in the interface
2136 // chain, we could return, as the `Type.GetInterfaces'
2137 // will return all the interfaces implement by the type
2141 interfaces = GetInterfaces (t);
2143 if (interfaces != null){
2144 foreach (Type i in interfaces){
2151 } while (t != null);
2156 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2158 // This is a custom version of Convert.ChangeType() which works
2159 // with the TypeBuilder defined types when compiling corlib.
2160 public static object ChangeType (object value, Type conversionType, out bool error)
2162 IConvertible convert_value = value as IConvertible;
2164 if (convert_value == null){
2170 // We must use Type.Equals() here since `conversionType' is
2171 // the TypeBuilder created version of a system type and not
2172 // the system type itself. You cannot use Type.GetTypeCode()
2173 // on such a type - it'd always return TypeCode.Object.
2177 if (conversionType.Equals (typeof (Boolean)))
2178 return (object)(convert_value.ToBoolean (nf_provider));
2179 else if (conversionType.Equals (typeof (Byte)))
2180 return (object)(convert_value.ToByte (nf_provider));
2181 else if (conversionType.Equals (typeof (Char)))
2182 return (object)(convert_value.ToChar (nf_provider));
2183 else if (conversionType.Equals (typeof (DateTime)))
2184 return (object)(convert_value.ToDateTime (nf_provider));
2185 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2186 return (object)(convert_value.ToDecimal (nf_provider));
2187 else if (conversionType.Equals (typeof (Double)))
2188 return (object)(convert_value.ToDouble (nf_provider));
2189 else if (conversionType.Equals (typeof (Int16)))
2190 return (object)(convert_value.ToInt16 (nf_provider));
2191 else if (conversionType.Equals (typeof (Int32)))
2192 return (object)(convert_value.ToInt32 (nf_provider));
2193 else if (conversionType.Equals (typeof (Int64)))
2194 return (object)(convert_value.ToInt64 (nf_provider));
2195 else if (conversionType.Equals (typeof (SByte)))
2196 return (object)(convert_value.ToSByte (nf_provider));
2197 else if (conversionType.Equals (typeof (Single)))
2198 return (object)(convert_value.ToSingle (nf_provider));
2199 else if (conversionType.Equals (typeof (String)))
2200 return (object)(convert_value.ToString (nf_provider));
2201 else if (conversionType.Equals (typeof (UInt16)))
2202 return (object)(convert_value.ToUInt16 (nf_provider));
2203 else if (conversionType.Equals (typeof (UInt32)))
2204 return (object)(convert_value.ToUInt32 (nf_provider));
2205 else if (conversionType.Equals (typeof (UInt64)))
2206 return (object)(convert_value.ToUInt64 (nf_provider));
2207 else if (conversionType.Equals (typeof (Object)))
2208 return (object)(value);
2218 // This is needed, because enumerations from assemblies
2219 // do not report their underlyingtype, but they report
2222 public static Type EnumToUnderlying (Type t)
2224 if (t == TypeManager.enum_type)
2227 t = t.UnderlyingSystemType;
2228 if (!TypeManager.IsEnumType (t))
2231 if (t is TypeBuilder) {
2232 // slow path needed to compile corlib
2233 if (t == TypeManager.bool_type ||
2234 t == TypeManager.byte_type ||
2235 t == TypeManager.sbyte_type ||
2236 t == TypeManager.char_type ||
2237 t == TypeManager.short_type ||
2238 t == TypeManager.ushort_type ||
2239 t == TypeManager.int32_type ||
2240 t == TypeManager.uint32_type ||
2241 t == TypeManager.int64_type ||
2242 t == TypeManager.uint64_type)
2245 TypeCode tc = Type.GetTypeCode (t);
2248 case TypeCode.Boolean:
2249 return TypeManager.bool_type;
2251 return TypeManager.byte_type;
2252 case TypeCode.SByte:
2253 return TypeManager.sbyte_type;
2255 return TypeManager.char_type;
2256 case TypeCode.Int16:
2257 return TypeManager.short_type;
2258 case TypeCode.UInt16:
2259 return TypeManager.ushort_type;
2260 case TypeCode.Int32:
2261 return TypeManager.int32_type;
2262 case TypeCode.UInt32:
2263 return TypeManager.uint32_type;
2264 case TypeCode.Int64:
2265 return TypeManager.int64_type;
2266 case TypeCode.UInt64:
2267 return TypeManager.uint64_type;
2269 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2273 // When compiling corlib and called with one of the core types, return
2274 // the corresponding typebuilder for that type.
2276 public static Type TypeToCoreType (Type t)
2278 if (RootContext.StdLib || (t is TypeBuilder))
2281 TypeCode tc = Type.GetTypeCode (t);
2284 case TypeCode.Boolean:
2285 return TypeManager.bool_type;
2287 return TypeManager.byte_type;
2288 case TypeCode.SByte:
2289 return TypeManager.sbyte_type;
2291 return TypeManager.char_type;
2292 case TypeCode.Int16:
2293 return TypeManager.short_type;
2294 case TypeCode.UInt16:
2295 return TypeManager.ushort_type;
2296 case TypeCode.Int32:
2297 return TypeManager.int32_type;
2298 case TypeCode.UInt32:
2299 return TypeManager.uint32_type;
2300 case TypeCode.Int64:
2301 return TypeManager.int64_type;
2302 case TypeCode.UInt64:
2303 return TypeManager.uint64_type;
2304 case TypeCode.Single:
2305 return TypeManager.float_type;
2306 case TypeCode.Double:
2307 return TypeManager.double_type;
2308 case TypeCode.String:
2309 return TypeManager.string_type;
2310 case TypeCode.Decimal:
2311 return TypeManager.decimal_type;
2313 if (t == typeof (void))
2314 return TypeManager.void_type;
2315 if (t == typeof (object))
2316 return TypeManager.object_type;
2317 if (t == typeof (System.Type))
2318 return TypeManager.type_type;
2319 if (t == typeof (System.IntPtr))
2320 return TypeManager.intptr_type;
2326 /// Utility function that can be used to probe whether a type
2327 /// is managed or not.
2329 public static bool VerifyUnManaged (Type t, Location loc)
2331 if (IsUnmanagedType (t))
2334 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2341 /// Returns the name of the indexer in a given type.
2344 /// The default is not always `Item'. The user can change this behaviour by
2345 /// using the IndexerNameAttribute in the container.
2347 /// For example, the String class indexer is named `Chars' not `Item'
2349 public static string IndexerPropertyName (Type t)
2351 t = DropGenericTypeArguments (t);
2352 if (t is TypeBuilder) {
2353 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2354 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2357 System.Attribute attr = System.Attribute.GetCustomAttribute (
2358 t, TypeManager.default_member_type);
2360 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2361 return dma.MemberName;
2364 return TypeContainer.DefaultIndexerName;
2367 static MethodInfo declare_local_method = null;
2369 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2371 if (declare_local_method == null){
2372 declare_local_method = typeof (ILGenerator).GetMethod (
2374 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2376 new Type [] { typeof (Type), typeof (bool)},
2378 if (declare_local_method == null){
2379 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2380 return ig.DeclareLocal (t);
2383 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2386 private static bool IsSignatureEqual (Type a, Type b)
2389 /// Consider the following example (bug #77674):
2391 /// public abstract class A
2393 /// public abstract T Foo<T> ();
2396 /// public abstract class B : A
2398 /// public override U Foo<T> ()
2399 /// { return default (U); }
2402 /// Here, `T' and `U' are method type parameters from different methods
2403 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2405 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2406 /// we need to do a signature based comparision and consider them equal.
2411 if (a.IsGenericParameter && b.IsGenericParameter &&
2412 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2413 return a.GenericParameterPosition == b.GenericParameterPosition;
2416 if (a.IsArray && b.IsArray) {
2417 if (a.GetArrayRank () != b.GetArrayRank ())
2420 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2423 if (a.IsByRef && b.IsByRef)
2424 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2426 if (a.IsGenericType && b.IsGenericType) {
2427 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2430 Type[] aargs = a.GetGenericArguments ();
2431 Type[] bargs = b.GetGenericArguments ();
2433 if (aargs.Length != bargs.Length)
2436 for (int i = 0; i < aargs.Length; i++) {
2437 if (!IsSignatureEqual (aargs [i], bargs [i]))
2448 // Returns whether the array of memberinfos contains the given method
2450 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2452 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2454 foreach (MethodBase method in array) {
2455 if (method.Name != new_method.Name)
2458 if (method is MethodInfo && new_method is MethodInfo)
2459 if (!IsSignatureEqual (((MethodInfo) method).ReturnType,
2460 ((MethodInfo) new_method).ReturnType))
2464 Type [] old_args = TypeManager.GetParameterData (method).Types;
2465 int old_count = old_args.Length;
2468 if (new_args.Length != old_count)
2471 for (i = 0; i < old_count; i++){
2472 if (!IsSignatureEqual (old_args [i], new_args [i]))
2485 // We copy methods from `new_members' into `target_list' if the signature
2486 // for the method from in the new list does not exist in the target_list
2488 // The name is assumed to be the same.
2490 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2492 if (target_list == null){
2493 target_list = new ArrayList ();
2495 foreach (MemberInfo mi in new_members){
2496 if (mi is MethodBase)
2497 target_list.Add (mi);
2502 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2503 target_list.CopyTo (target_array, 0);
2505 foreach (MemberInfo mi in new_members){
2506 MethodBase new_method = (MethodBase) mi;
2508 if (!ArrayContainsMethod (target_array, new_method))
2509 target_list.Add (new_method);
2514 // This method always return false for non-generic compiler,
2515 // while Type.IsGenericParameter is returned if it is supported.
2516 public static bool IsGenericParameter (Type type)
2518 return type.IsGenericParameter;
2521 public static int GenericParameterPosition (Type type)
2523 return type.GenericParameterPosition;
2526 #region MemberLookup implementation
2529 // Whether we allow private members in the result (since FindMembers
2530 // uses NonPublic for both protected and private), we need to distinguish.
2533 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2538 internal class Closure {
2539 internal bool private_ok;
2541 // Who is invoking us and which type is being queried currently.
2542 internal Type invocation_type;
2543 internal Type qualifier_type;
2545 // The assembly that defines the type is that is calling us
2546 internal Assembly invocation_assembly;
2547 internal IList almost_match;
2549 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2551 if (invocation_type == null)
2554 if (is_static && qualifier_type == null)
2555 // It resolved from a simple name, so it should be visible.
2558 // A nested class has access to all the protected members visible to its parent.
2559 if (qualifier_type != null && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2562 if (IsNestedFamilyAccessible (invocation_type, m.DeclaringType)) {
2563 // Although a derived class can access protected members of its base class
2564 // it cannot do so through an instance of the base class (CS1540).
2565 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2567 qualifier_type == null ||
2568 IsInstantiationOfSameGenericType (invocation_type, qualifier_type) ||
2569 !IsFamilyAccessible (invocation_type, qualifier_type) ||
2570 IsNestedChildOf (invocation_type, qualifier_type))
2574 if (almost_match != null)
2575 almost_match.Add (m);
2581 // This filter filters by name + whether it is ok to include private
2582 // members in the search
2584 internal bool Filter (MemberInfo m, object filter_criteria)
2587 // Hack: we know that the filter criteria will always be in the
2588 // `closure' // fields.
2591 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2594 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2595 (invocation_type != null) &&
2596 IsPrivateAccessible (m.DeclaringType, invocation_type))
2600 // Ugly: we need to find out the type of `m', and depending
2601 // on this, tell whether we accept or not
2603 if (m is MethodBase){
2604 MethodBase mb = (MethodBase) m;
2605 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2607 if (ma == MethodAttributes.Public)
2610 if (ma == MethodAttributes.Private)
2611 return private_ok ||
2612 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2613 IsNestedChildOf (invocation_type, m.DeclaringType);
2615 if (invocation_assembly == mb.DeclaringType.Assembly ||
2616 TypeManager.IsFriendAssembly (mb.DeclaringType.Assembly)) {
2617 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2620 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2624 // Family, FamORAssem or FamANDAssem
2625 return CheckValidFamilyAccess (mb.IsStatic, m);
2628 if (m is FieldInfo){
2629 FieldInfo fi = (FieldInfo) m;
2630 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2632 if (fa == FieldAttributes.Public)
2635 if (fa == FieldAttributes.Private)
2636 return private_ok ||
2637 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2638 IsNestedChildOf (invocation_type, m.DeclaringType);
2640 if (invocation_assembly == fi.DeclaringType.Assembly ||
2641 TypeManager.IsFriendAssembly (fi.DeclaringType.Assembly)) {
2642 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamORAssem)
2645 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamANDAssem)
2649 // Family, FamORAssem or FamANDAssem
2650 return CheckValidFamilyAccess (fi.IsStatic, m);
2654 // EventInfos and PropertyInfos, return true because they lack
2655 // permission information, so we need to check later on the methods.
2661 static Closure closure = new Closure ();
2662 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2665 // Looks up a member called `name' in the `queried_type'. This lookup
2666 // is done by code that is contained in the definition for `invocation_type'
2667 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2669 // `invocation_type' is used to check whether we're allowed to access the requested
2670 // member wrt its protection level.
2672 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2673 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2674 // is B and qualifier_type is A). This is used to do the CS1540 check.
2676 // When resolving a SimpleName, `qualifier_type' is null.
2678 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2679 // the same than `queried_type' - except when we're being called from BaseAccess;
2680 // in this case, `invocation_type' is the current type and `queried_type' the base
2681 // type, so this'd normally trigger a CS1540.
2683 // The binding flags are `bf' and the kind of members being looked up are `mt'
2685 // The return value always includes private members which code in `invocation_type'
2686 // is allowed to access (using the specified `qualifier_type' if given); only use
2687 // BindingFlags.NonPublic to bypass the permission check.
2689 // The 'almost_match' argument is used for reporting error CS1540.
2691 // Returns an array of a single element for everything but Methods/Constructors
2692 // that might return multiple matches.
2694 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2695 Type queried_type, MemberTypes mt,
2696 BindingFlags original_bf, string name, IList almost_match)
2698 Timer.StartTimer (TimerType.MemberLookup);
2700 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2701 queried_type, mt, original_bf, name, almost_match);
2703 Timer.StopTimer (TimerType.MemberLookup);
2708 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2709 Type queried_type, MemberTypes mt,
2710 BindingFlags original_bf, string name, IList almost_match)
2712 BindingFlags bf = original_bf;
2714 ArrayList method_list = null;
2715 Type current_type = queried_type;
2716 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2717 bool skip_iface_check = true, used_cache = false;
2718 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
2720 closure.invocation_type = invocation_type;
2721 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2722 closure.qualifier_type = qualifier_type;
2723 closure.almost_match = almost_match;
2725 // This is from the first time we find a method
2726 // in most cases, we do not actually find a method in the base class
2727 // so we can just ignore it, and save the arraylist allocation
2728 MemberInfo [] first_members_list = null;
2729 bool use_first_members_list = false;
2735 // `NonPublic' is lame, because it includes both protected and
2736 // private methods, so we need to control this behavior by
2737 // explicitly tracking if a private method is ok or not.
2739 // The possible cases are:
2740 // public, private and protected (internal does not come into the
2743 if ((invocation_type != null) &&
2744 ((invocation_type == current_type) ||
2745 IsNestedChildOf (invocation_type, current_type)) ||
2747 bf = original_bf | BindingFlags.NonPublic;
2751 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2753 Timer.StopTimer (TimerType.MemberLookup);
2755 list = MemberLookup_FindMembers (
2756 current_type, mt, bf, name, out used_cache);
2758 Timer.StartTimer (TimerType.MemberLookup);
2761 // When queried for an interface type, the cache will automatically check all
2762 // inherited members, so we don't need to do this here. However, this only
2763 // works if we already used the cache in the first iteration of this loop.
2765 // If we used the cache in any further iteration, we can still terminate the
2766 // loop since the cache always looks in all base classes.
2772 skip_iface_check = false;
2774 if (current_type == TypeManager.object_type)
2777 current_type = current_type.BaseType;
2780 // This happens with interfaces, they have a null
2781 // basetype. Look members up in the Object class.
2783 if (current_type == null) {
2784 current_type = TypeManager.object_type;
2789 if (list.Length == 0)
2793 // Events and types are returned by both `static' and `instance'
2794 // searches, which means that our above FindMembers will
2795 // return two copies of the same.
2797 if (list.Length == 1 && !(list [0] is MethodBase)){
2802 // Multiple properties: we query those just to find out the indexer
2805 if (list [0] is PropertyInfo)
2809 // We found an event: the cache lookup returns both the event and
2810 // its private field.
2812 if (list [0] is EventInfo) {
2813 if ((list.Length == 2) && (list [1] is FieldInfo))
2814 return new MemberInfo [] { list [0] };
2821 // We found methods, turn the search into "method scan"
2825 if (first_members_list != null) {
2826 if (use_first_members_list) {
2827 method_list = CopyNewMethods (method_list, first_members_list);
2828 use_first_members_list = false;
2831 method_list = CopyNewMethods (method_list, list);
2833 first_members_list = list;
2834 use_first_members_list = true;
2836 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2838 } while (searching);
2840 if (use_first_members_list) {
2841 foreach (MemberInfo mi in first_members_list) {
2842 if (! (mi is MethodBase)) {
2843 method_list = CopyNewMethods (method_list, first_members_list);
2844 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2847 return (MemberInfo []) first_members_list;
2850 if (method_list != null && method_list.Count > 0) {
2851 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2854 // This happens if we already used the cache in the first iteration, in this case
2855 // the cache already looked in all interfaces.
2857 if (skip_iface_check)
2861 // Interfaces do not list members they inherit, so we have to
2864 if (!queried_type.IsInterface)
2867 if (queried_type.IsArray)
2868 queried_type = TypeManager.array_type;
2870 Type [] ifaces = GetInterfaces (queried_type);
2874 foreach (Type itype in ifaces){
2877 x = MemberLookup (null, null, itype, mt, bf, name, null);
2885 // Tests whether external method is really special
2886 public static bool IsSpecialMethod (MethodBase mb)
2888 string name = mb.Name;
2889 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2890 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2892 if (name.StartsWith ("add_"))
2893 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2895 if (name.StartsWith ("remove_"))
2896 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2898 if (name.StartsWith ("op_")){
2899 foreach (string oname in Unary.oper_names) {
2904 foreach (string oname in Binary.oper_names) {
2917 /// There is exactly one instance of this class per type.
2919 public sealed class TypeHandle : IMemberContainer {
2920 public readonly IMemberContainer BaseType;
2922 readonly int id = ++next_id;
2923 static int next_id = 0;
2925 static TypeHandle ()
2931 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2932 /// a TypeHandle yet, a new instance of it is created. This static method
2933 /// ensures that we'll only have one TypeHandle instance per type.
2935 private static TypeHandle GetTypeHandle (Type t)
2937 TypeHandle handle = (TypeHandle) type_hash [t];
2941 handle = new TypeHandle (t);
2942 type_hash.Add (t, handle);
2946 public static MemberCache GetMemberCache (Type t)
2948 return GetTypeHandle (t).MemberCache;
2951 public static void CleanUp ()
2956 public static void Reset ()
2958 type_hash = new PtrHashtable ();
2962 /// Returns the TypeHandle for TypeManager.object_type.
2964 public static IMemberContainer ObjectType {
2966 if (object_type != null)
2969 object_type = GetTypeHandle (TypeManager.object_type);
2976 /// Returns the TypeHandle for TypeManager.array_type.
2978 public static IMemberContainer ArrayType {
2980 if (array_type != null)
2983 array_type = GetTypeHandle (TypeManager.array_type);
2989 private static PtrHashtable type_hash;
2991 private static TypeHandle object_type = null;
2992 private static TypeHandle array_type = null;
2995 private string full_name;
2996 private bool is_interface;
2997 private MemberCache member_cache;
2998 private MemberCache base_cache;
3000 private TypeHandle (Type type)
3003 full_name = type.FullName != null ? type.FullName : type.Name;
3004 if (type.BaseType != null) {
3005 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3006 BaseType = base_cache.Container;
3007 } else if (type.IsInterface)
3008 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3009 this.is_interface = type.IsInterface || type.IsGenericParameter;
3010 this.member_cache = new MemberCache (this);
3013 // IMemberContainer methods
3015 public string Name {
3027 public MemberCache BaseCache {
3033 public bool IsInterface {
3035 return is_interface;
3039 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3041 MemberInfo [] members;
3042 if (type is GenericTypeParameterBuilder)
3043 return MemberList.Empty;
3044 if (mt == MemberTypes.Event)
3045 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3047 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3049 Array.Reverse (members);
3051 return new MemberList (members);
3054 // IMemberFinder methods
3056 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3057 MemberFilter filter, object criteria)
3059 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3062 public MemberCache MemberCache {
3064 return member_cache;
3068 public override string ToString ()
3070 if (BaseType != null)
3071 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3073 return "TypeHandle (" + id + "," + Name + ")";