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.
1293 if (t.IsSubclassOf (TypeManager.array_type))
1294 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1296 if (t is GenericTypeParameterBuilder) {
1297 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1299 Timer.StartTimer (TimerType.FindMembers);
1300 MemberList list = tparam.FindMembers (
1301 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1302 Timer.StopTimer (TimerType.FindMembers);
1307 // Since FindMembers will not lookup both static and instance
1308 // members, we emulate this behaviour here.
1310 if ((bf & instance_and_static) == instance_and_static){
1311 MemberInfo [] i_members = t.FindMembers (
1312 mt, bf & ~BindingFlags.Static, filter, criteria);
1314 int i_len = i_members.Length;
1316 MemberInfo one = i_members [0];
1319 // If any of these are present, we are done!
1321 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1322 return new MemberList (i_members);
1325 MemberInfo [] s_members = t.FindMembers (
1326 mt, bf & ~BindingFlags.Instance, filter, criteria);
1328 int s_len = s_members.Length;
1329 if (i_len > 0 || s_len > 0)
1330 return new MemberList (i_members, s_members);
1333 return new MemberList (i_members);
1335 return new MemberList (s_members);
1339 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1344 /// This method is only called from within MemberLookup. It tries to use the member
1345 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1346 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1347 /// our return value will already contain all inherited members and the caller don't need
1348 /// to check base classes and interfaces anymore.
1350 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1351 string name, out bool used_cache)
1356 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1357 // and we can ask the DeclSpace for the MemberCache.
1359 if (t is TypeBuilder) {
1360 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1361 cache = decl.MemberCache;
1364 // If this DeclSpace has a MemberCache, use it.
1367 if (cache != null) {
1369 return cache.FindMembers (
1370 mt, bf, name, FilterWithClosure_delegate, null);
1373 // If there is no MemberCache, we need to use the "normal" FindMembers.
1374 // Note, this is a VERY uncommon route!
1377 Timer.StartTimer (TimerType.FindMembers);
1378 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1379 FilterWithClosure_delegate, name);
1380 Timer.StopTimer (TimerType.FindMembers);
1382 return (MemberInfo []) list;
1386 // We have to take care of arrays specially, because GetType on
1387 // a TypeBuilder array will return a Type, not a TypeBuilder,
1388 // and we can not call FindMembers on this type.
1390 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1392 return TypeHandle.ArrayType.MemberCache.FindMembers (
1393 mt, bf, name, FilterWithClosure_delegate, null);
1396 if (t is GenericTypeParameterBuilder) {
1397 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1400 Timer.StartTimer (TimerType.FindMembers);
1401 list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1402 FilterWithClosure_delegate, name);
1403 Timer.StopTimer (TimerType.FindMembers);
1405 return (MemberInfo []) list;
1408 if (t.IsGenericType && (mt == MemberTypes.NestedType)) {
1410 // This happens if we're resolving a class'es base class and interfaces
1411 // in TypeContainer.DefineType(). At this time, the types aren't
1412 // populated yet, so we can't use the cache.
1414 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1415 FilterWithClosure_delegate, name);
1421 // This call will always succeed. There is exactly one TypeHandle instance per
1422 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1423 // the corresponding MemberCache.
1425 cache = TypeHandle.GetMemberCache (t);
1428 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1431 public static bool IsBuiltinType (Type t)
1433 t = TypeToCoreType (t);
1434 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1435 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1436 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1437 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1443 public static bool IsBuiltinType (TypeContainer tc)
1445 return IsBuiltinType (tc.TypeBuilder);
1449 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1450 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1452 public static bool IsPrimitiveType (Type t)
1454 return (t == int32_type || t == uint32_type ||
1455 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1456 t == char_type || t == short_type || t == bool_type ||
1457 t == sbyte_type || t == byte_type || t == ushort_type);
1460 public static bool IsDelegateType (Type t)
1462 t = DropGenericTypeArguments (t);
1463 if (t.IsSubclassOf (TypeManager.delegate_type))
1469 public static bool IsEnumType (Type t)
1471 if (builder_to_declspace [t] is Enum)
1477 public static bool IsBuiltinOrEnum (Type t)
1479 if (IsBuiltinType (t))
1488 public static bool IsNullType (Type t)
1490 return t == null_type;
1493 public static bool IsAttributeType (Type t)
1495 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1498 static Stack unmanaged_enclosing_types = new Stack (4);
1501 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1503 public static bool IsUnmanagedType (Type t)
1505 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1506 if (unmanaged_enclosing_types.Contains (t))
1509 // builtins that are not unmanaged types
1510 if (t == TypeManager.object_type || t == TypeManager.string_type)
1513 if (IsBuiltinOrEnum (t))
1516 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1520 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1524 if (!IsValueType (t))
1527 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1528 if (p.IsGenericTypeDefinition)
1532 unmanaged_enclosing_types.Push (t);
1536 if (t is TypeBuilder) {
1537 TypeContainer tc = LookupTypeContainer (t);
1538 if (tc.Fields != null){
1539 foreach (FieldMember f in tc.Fields){
1540 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1541 if ((f.ModFlags & Modifiers.STATIC) != 0)
1543 if (f.MemberType == null)
1545 if (!IsUnmanagedType (f.MemberType)){
1546 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1552 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1554 foreach (FieldInfo f in fields){
1555 if (!IsUnmanagedType (f.FieldType)){
1556 Report.SymbolRelatedToPreviousError (f);
1562 unmanaged_enclosing_types.Pop ();
1567 public static bool IsValueType (Type t)
1569 return t.IsGenericParameter || t.IsValueType;
1572 public static bool IsInterfaceType (Type t)
1574 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1578 return tc.Kind == Kind.Interface;
1581 public static bool IsSubclassOf (Type type, Type base_type)
1583 TypeParameter tparam = LookupTypeParameter (type);
1584 TypeParameter pparam = LookupTypeParameter (base_type);
1586 if ((tparam != null) && (pparam != null)) {
1587 if (tparam == pparam)
1590 return tparam.IsSubclassOf (base_type);
1593 if (type.IsSubclassOf (base_type))
1597 if (IsEqual (type, base_type))
1600 type = type.BaseType;
1601 } while (type != null);
1606 public static bool IsPrivateAccessible (Type type, Type parent)
1608 if (type.Equals (parent))
1610 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1613 public static bool IsFamilyAccessible (Type type, Type parent)
1615 TypeParameter tparam = LookupTypeParameter (type);
1616 TypeParameter pparam = LookupTypeParameter (parent);
1618 if ((tparam != null) && (pparam != null)) {
1619 if (tparam == pparam)
1622 return tparam.IsSubclassOf (parent);
1626 if (IsInstantiationOfSameGenericType (type, parent))
1629 type = type.BaseType;
1630 } while (type != null);
1636 // Checks whether `type' is a subclass or nested child of `base_type'.
1638 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1641 if (IsFamilyAccessible (type, base_type))
1644 // Handle nested types.
1645 type = type.DeclaringType;
1646 } while (type != null);
1652 // Checks whether `type' is a nested child of `parent'.
1654 public static bool IsNestedChildOf (Type type, Type parent)
1656 if (IsEqual (type, parent))
1659 type = type.DeclaringType;
1660 while (type != null) {
1661 if (IsEqual (type, parent))
1664 type = type.DeclaringType;
1671 // Checks whether `extern_type' is friend of the output assembly
1673 public static bool IsFriendAssembly (Assembly assembly)
1675 if (assembly_internals_vis_attrs.Contains (assembly))
1676 return (bool)(assembly_internals_vis_attrs [assembly]);
1678 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1679 if (attrs.Length == 0) {
1680 assembly_internals_vis_attrs.Add (assembly, false);
1684 AssemblyName this_name = CodeGen.Assembly.Name;
1685 byte [] this_token = this_name.GetPublicKeyToken ();
1686 bool is_friend = false;
1687 foreach (InternalsVisibleToAttribute attr in attrs) {
1688 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1691 AssemblyName aname = null;
1693 aname = new AssemblyName (attr.AssemblyName);
1694 } catch (FileLoadException) {
1695 } catch (ArgumentException) {
1698 if (aname == null || aname.Name != this_name.Name)
1701 byte [] key_token = aname.GetPublicKeyToken ();
1702 if (key_token != null) {
1703 if (this_token == null) {
1704 // Same name, but key token is null
1705 Error_FriendAccessNameNotMatching (aname.FullName);
1709 if (!CompareKeyTokens (this_token, key_token))
1717 assembly_internals_vis_attrs.Add (assembly, is_friend);
1721 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1723 for (int i = 0; i < token1.Length; i++)
1724 if (token1 [i] != token2 [i])
1730 static void Error_FriendAccessNameNotMatching (string other_name)
1732 Report.Error (281, "Friend access was granted to `" + other_name +
1733 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1734 "'. Try adding a reference to `" + other_name +
1735 "' or change the output assembly name to match it");
1739 // Do the right thing when returning the element type of an
1740 // array type based on whether we are compiling corlib or not
1742 public static Type GetElementType (Type t)
1744 if (RootContext.StdLib)
1745 return t.GetElementType ();
1747 return TypeToCoreType (t.GetElementType ());
1751 /// This method is not implemented by MS runtime for dynamic types
1753 public static bool HasElementType (Type t)
1755 return t.IsArray || t.IsPointer || t.IsByRef;
1759 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1763 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1764 /// for anything which is dynamic, and we need this in a number of places,
1765 /// we register this information here, and use it afterwards.
1767 static public void RegisterMethod (MethodBase mb, Parameters ip)
1769 method_params.Add (mb, ip);
1772 static public ParameterData GetParameterData (MethodBase mb)
1774 ParameterData pd = (ParameterData)method_params [mb];
1776 if (mb is MethodBuilder || mb is ConstructorBuilder)
1777 throw new InternalErrorException ("Argument for Method not registered" + mb);
1779 pd = new ReflectionParameters (mb);
1780 method_params.Add (mb, pd);
1785 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1787 if (!method_overrides.Contains (override_method))
1788 method_overrides [override_method] = base_method;
1789 if (method_overrides [override_method] != base_method)
1790 throw new InternalErrorException ("Override mismatch: " + override_method);
1793 static public bool IsOverride (MethodBase m)
1795 m = DropGenericMethodArguments (m);
1797 return m.IsVirtual &&
1798 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1799 (m is MethodBuilder || method_overrides.Contains (m));
1802 static public MethodBase TryGetBaseDefinition (MethodBase m)
1804 return (MethodBase) method_overrides [m];
1808 /// Returns the argument types for an indexer based on its PropertyInfo
1810 /// For dynamic indexers, we use the compiler provided types, for
1811 /// indexers from existing assemblies we load them from GetParameters,
1812 /// and insert them into the cache
1814 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1816 if (indexer_arguments.Contains (indexer))
1817 return (Type []) indexer_arguments [indexer];
1818 else if (indexer is PropertyBuilder)
1819 // If we're a PropertyBuilder and not in the
1820 // `indexer_arguments' hash, then we're a property and
1822 return Type.EmptyTypes;
1824 ParameterInfo [] pi = indexer.GetIndexParameters ();
1825 // Property, not an indexer.
1827 return Type.EmptyTypes;
1829 Type [] types = new Type [c];
1831 for (int i = 0; i < c; i++)
1832 types [i] = pi [i].ParameterType;
1834 indexer_arguments.Add (indexer, types);
1839 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1841 fields.Add (fb, ic);
1844 public static IConstant GetConstant (FieldInfo fb)
1849 return (IConstant)fields [fb];
1852 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1854 if (fieldbuilders_to_fields.Contains (fb))
1857 fieldbuilders_to_fields.Add (fb, f);
1862 // The return value can be null; This will be the case for
1863 // auxiliary FieldBuilders created by the compiler that have no
1864 // real field being declared on the source code
1866 static public FieldBase GetField (FieldInfo fb)
1868 fb = GetGenericFieldDefinition (fb);
1869 return (FieldBase) fieldbuilders_to_fields [fb];
1872 static Hashtable events;
1874 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1877 events = new Hashtable ();
1879 if (!events.Contains (eb)) {
1880 events.Add (eb, new Pair (add, remove));
1884 static public MethodInfo GetAddMethod (EventInfo ei)
1886 if (ei is MyEventBuilder) {
1887 Pair pair = (Pair) events [ei];
1889 return (MethodInfo) pair.First;
1891 return ei.GetAddMethod (true);
1894 static public MethodInfo GetRemoveMethod (EventInfo ei)
1896 if (ei is MyEventBuilder) {
1897 Pair pair = (Pair) events [ei];
1899 return (MethodInfo) pair.Second;
1901 return ei.GetRemoveMethod (true);
1904 static Hashtable priv_fields_events;
1906 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1908 if (priv_fields_events == null)
1909 priv_fields_events = new Hashtable ();
1911 if (priv_fields_events.Contains (einfo))
1914 priv_fields_events.Add (einfo, builder);
1919 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1921 if (priv_fields_events == null)
1924 return (MemberInfo) priv_fields_events [ei];
1927 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1928 MethodBase set, Type[] args)
1930 indexer_arguments.Add (pb, args);
1935 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1937 Hashtable hash = new Hashtable ();
1938 return CheckStructCycles (tc, seen, hash);
1941 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1944 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1948 // `seen' contains all types we've already visited.
1950 if (seen.Contains (tc))
1952 seen.Add (tc, null);
1954 if (tc.Fields == null)
1957 foreach (FieldMember field in tc.Fields) {
1958 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1961 Type ftype = field.FieldBuilder.FieldType;
1962 TypeContainer ftc = LookupTypeContainer (ftype);
1966 if (hash.Contains (ftc)) {
1967 Report.Error (523, tc.Location,
1968 "Struct member `{0}.{1}' of type `{2}' " +
1969 "causes a cycle in the struct layout",
1970 tc.Name, field.Name, ftc.Name);
1975 // `hash' contains all types in the current path.
1977 hash.Add (tc, null);
1979 bool ok = CheckStructCycles (ftc, seen, hash);
1986 if (!seen.Contains (ftc))
1987 seen.Add (ftc, null);
1994 /// Given an array of interface types, expand and eliminate repeated ocurrences
1995 /// of an interface.
1999 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2002 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
2004 ArrayList new_ifaces = new ArrayList ();
2006 foreach (TypeExpr iface in base_interfaces){
2007 TypeExpr texpr = iface.ResolveAsTypeTerminal (ec, false);
2011 Type itype = texpr.ResolveType (ec);
2013 if (new_ifaces.Contains (itype))
2016 new_ifaces.Add (itype);
2018 Type [] implementing = GetInterfaces (itype);
2020 foreach (Type imp in implementing){
2021 if (!new_ifaces.Contains (imp))
2022 new_ifaces.Add (imp);
2025 Type [] ret = new Type [new_ifaces.Count];
2026 new_ifaces.CopyTo (ret, 0);
2030 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2032 ArrayList new_ifaces = new ArrayList ();
2034 foreach (Type itype in base_interfaces){
2035 if (new_ifaces.Contains (itype))
2038 new_ifaces.Add (itype);
2040 Type [] implementing = GetInterfaces (itype);
2042 foreach (Type imp in implementing){
2043 if (!new_ifaces.Contains (imp))
2044 new_ifaces.Add (imp);
2047 Type [] ret = new Type [new_ifaces.Count];
2048 new_ifaces.CopyTo (ret, 0);
2052 static PtrHashtable iface_cache = new PtrHashtable ();
2055 /// This function returns the interfaces in the type `t'. Works with
2056 /// both types and TypeBuilders.
2058 public static Type [] GetInterfaces (Type t)
2060 Type [] cached = iface_cache [t] as Type [];
2065 // The reason for catching the Array case is that Reflection.Emit
2066 // will not return a TypeBuilder for Array types of TypeBuilder types,
2067 // but will still throw an exception if we try to call GetInterfaces
2070 // Since the array interfaces are always constant, we return those for
2075 t = TypeManager.array_type;
2077 if ((t is TypeBuilder) || t.IsGenericType) {
2078 Type [] base_ifaces;
2080 if (t.BaseType == null)
2081 base_ifaces = Type.EmptyTypes;
2083 base_ifaces = GetInterfaces (t.BaseType);
2085 if (t.IsGenericType)
2086 type_ifaces = t.GetInterfaces ();
2088 type_ifaces = (Type []) builder_to_ifaces [t];
2089 if (type_ifaces == null)
2090 type_ifaces = Type.EmptyTypes;
2092 int base_count = base_ifaces.Length;
2093 Type [] result = new Type [base_count + type_ifaces.Length];
2094 base_ifaces.CopyTo (result, 0);
2095 type_ifaces.CopyTo (result, base_count);
2097 iface_cache [t] = result;
2099 } else if (t is GenericTypeParameterBuilder){
2100 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2101 if (type_ifaces == null)
2102 type_ifaces = Type.EmptyTypes;
2104 iface_cache [t] = type_ifaces;
2107 Type[] ifaces = t.GetInterfaces ();
2108 iface_cache [t] = ifaces;
2114 // gets the interfaces that are declared explicitly on t
2116 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2118 return (Type []) builder_to_ifaces [t];
2122 /// The following is used to check if a given type implements an interface.
2123 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2125 public static bool ImplementsInterface (Type t, Type iface)
2130 // FIXME OPTIMIZATION:
2131 // as soon as we hit a non-TypeBuiler in the interface
2132 // chain, we could return, as the `Type.GetInterfaces'
2133 // will return all the interfaces implement by the type
2137 interfaces = GetInterfaces (t);
2139 if (interfaces != null){
2140 foreach (Type i in interfaces){
2147 } while (t != null);
2152 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2154 // This is a custom version of Convert.ChangeType() which works
2155 // with the TypeBuilder defined types when compiling corlib.
2156 public static object ChangeType (object value, Type conversionType, out bool error)
2158 IConvertible convert_value = value as IConvertible;
2160 if (convert_value == null){
2166 // We must use Type.Equals() here since `conversionType' is
2167 // the TypeBuilder created version of a system type and not
2168 // the system type itself. You cannot use Type.GetTypeCode()
2169 // on such a type - it'd always return TypeCode.Object.
2173 if (conversionType.Equals (typeof (Boolean)))
2174 return (object)(convert_value.ToBoolean (nf_provider));
2175 else if (conversionType.Equals (typeof (Byte)))
2176 return (object)(convert_value.ToByte (nf_provider));
2177 else if (conversionType.Equals (typeof (Char)))
2178 return (object)(convert_value.ToChar (nf_provider));
2179 else if (conversionType.Equals (typeof (DateTime)))
2180 return (object)(convert_value.ToDateTime (nf_provider));
2181 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2182 return (object)(convert_value.ToDecimal (nf_provider));
2183 else if (conversionType.Equals (typeof (Double)))
2184 return (object)(convert_value.ToDouble (nf_provider));
2185 else if (conversionType.Equals (typeof (Int16)))
2186 return (object)(convert_value.ToInt16 (nf_provider));
2187 else if (conversionType.Equals (typeof (Int32)))
2188 return (object)(convert_value.ToInt32 (nf_provider));
2189 else if (conversionType.Equals (typeof (Int64)))
2190 return (object)(convert_value.ToInt64 (nf_provider));
2191 else if (conversionType.Equals (typeof (SByte)))
2192 return (object)(convert_value.ToSByte (nf_provider));
2193 else if (conversionType.Equals (typeof (Single)))
2194 return (object)(convert_value.ToSingle (nf_provider));
2195 else if (conversionType.Equals (typeof (String)))
2196 return (object)(convert_value.ToString (nf_provider));
2197 else if (conversionType.Equals (typeof (UInt16)))
2198 return (object)(convert_value.ToUInt16 (nf_provider));
2199 else if (conversionType.Equals (typeof (UInt32)))
2200 return (object)(convert_value.ToUInt32 (nf_provider));
2201 else if (conversionType.Equals (typeof (UInt64)))
2202 return (object)(convert_value.ToUInt64 (nf_provider));
2203 else if (conversionType.Equals (typeof (Object)))
2204 return (object)(value);
2214 // This is needed, because enumerations from assemblies
2215 // do not report their underlyingtype, but they report
2218 public static Type EnumToUnderlying (Type t)
2220 if (t == TypeManager.enum_type)
2223 t = t.UnderlyingSystemType;
2224 if (!TypeManager.IsEnumType (t))
2227 if (t is TypeBuilder) {
2228 // slow path needed to compile corlib
2229 if (t == TypeManager.bool_type ||
2230 t == TypeManager.byte_type ||
2231 t == TypeManager.sbyte_type ||
2232 t == TypeManager.char_type ||
2233 t == TypeManager.short_type ||
2234 t == TypeManager.ushort_type ||
2235 t == TypeManager.int32_type ||
2236 t == TypeManager.uint32_type ||
2237 t == TypeManager.int64_type ||
2238 t == TypeManager.uint64_type)
2241 TypeCode tc = Type.GetTypeCode (t);
2244 case TypeCode.Boolean:
2245 return TypeManager.bool_type;
2247 return TypeManager.byte_type;
2248 case TypeCode.SByte:
2249 return TypeManager.sbyte_type;
2251 return TypeManager.char_type;
2252 case TypeCode.Int16:
2253 return TypeManager.short_type;
2254 case TypeCode.UInt16:
2255 return TypeManager.ushort_type;
2256 case TypeCode.Int32:
2257 return TypeManager.int32_type;
2258 case TypeCode.UInt32:
2259 return TypeManager.uint32_type;
2260 case TypeCode.Int64:
2261 return TypeManager.int64_type;
2262 case TypeCode.UInt64:
2263 return TypeManager.uint64_type;
2265 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2269 // When compiling corlib and called with one of the core types, return
2270 // the corresponding typebuilder for that type.
2272 public static Type TypeToCoreType (Type t)
2274 if (RootContext.StdLib || (t is TypeBuilder))
2277 TypeCode tc = Type.GetTypeCode (t);
2280 case TypeCode.Boolean:
2281 return TypeManager.bool_type;
2283 return TypeManager.byte_type;
2284 case TypeCode.SByte:
2285 return TypeManager.sbyte_type;
2287 return TypeManager.char_type;
2288 case TypeCode.Int16:
2289 return TypeManager.short_type;
2290 case TypeCode.UInt16:
2291 return TypeManager.ushort_type;
2292 case TypeCode.Int32:
2293 return TypeManager.int32_type;
2294 case TypeCode.UInt32:
2295 return TypeManager.uint32_type;
2296 case TypeCode.Int64:
2297 return TypeManager.int64_type;
2298 case TypeCode.UInt64:
2299 return TypeManager.uint64_type;
2300 case TypeCode.Single:
2301 return TypeManager.float_type;
2302 case TypeCode.Double:
2303 return TypeManager.double_type;
2304 case TypeCode.String:
2305 return TypeManager.string_type;
2306 case TypeCode.Decimal:
2307 return TypeManager.decimal_type;
2309 if (t == typeof (void))
2310 return TypeManager.void_type;
2311 if (t == typeof (object))
2312 return TypeManager.object_type;
2313 if (t == typeof (System.Type))
2314 return TypeManager.type_type;
2315 if (t == typeof (System.IntPtr))
2316 return TypeManager.intptr_type;
2322 /// Utility function that can be used to probe whether a type
2323 /// is managed or not.
2325 public static bool VerifyUnManaged (Type t, Location loc)
2327 if (IsUnmanagedType (t))
2330 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2337 /// Returns the name of the indexer in a given type.
2340 /// The default is not always `Item'. The user can change this behaviour by
2341 /// using the IndexerNameAttribute in the container.
2343 /// For example, the String class indexer is named `Chars' not `Item'
2345 public static string IndexerPropertyName (Type t)
2347 t = DropGenericTypeArguments (t);
2348 if (t is TypeBuilder) {
2349 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2350 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2353 System.Attribute attr = System.Attribute.GetCustomAttribute (
2354 t, TypeManager.default_member_type);
2356 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2357 return dma.MemberName;
2360 return TypeContainer.DefaultIndexerName;
2363 static MethodInfo declare_local_method = null;
2365 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2367 if (declare_local_method == null){
2368 declare_local_method = typeof (ILGenerator).GetMethod (
2370 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2372 new Type [] { typeof (Type), typeof (bool)},
2374 if (declare_local_method == null){
2375 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2376 return ig.DeclareLocal (t);
2379 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2383 // Returns whether the array of memberinfos contains the given method
2385 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2387 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2389 foreach (MethodBase method in array) {
2390 if (method.Name != new_method.Name)
2393 if (method is MethodInfo && new_method is MethodInfo)
2394 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2398 Type [] old_args = TypeManager.GetParameterData (method).Types;
2399 int old_count = old_args.Length;
2402 if (new_args.Length != old_count)
2405 for (i = 0; i < old_count; i++){
2406 if (old_args [i] != new_args [i])
2419 // We copy methods from `new_members' into `target_list' if the signature
2420 // for the method from in the new list does not exist in the target_list
2422 // The name is assumed to be the same.
2424 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2426 if (target_list == null){
2427 target_list = new ArrayList ();
2429 foreach (MemberInfo mi in new_members){
2430 if (mi is MethodBase)
2431 target_list.Add (mi);
2436 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2437 target_list.CopyTo (target_array, 0);
2439 foreach (MemberInfo mi in new_members){
2440 MethodBase new_method = (MethodBase) mi;
2442 if (!ArrayContainsMethod (target_array, new_method))
2443 target_list.Add (new_method);
2448 // This method always return false for non-generic compiler,
2449 // while Type.IsGenericParameter is returned if it is supported.
2450 public static bool IsGenericParameter (Type type)
2452 return type.IsGenericParameter;
2455 public static int GenericParameterPosition (Type type)
2457 return type.GenericParameterPosition;
2460 #region MemberLookup implementation
2463 // Whether we allow private members in the result (since FindMembers
2464 // uses NonPublic for both protected and private), we need to distinguish.
2467 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2472 internal class Closure {
2473 internal bool private_ok;
2475 // Who is invoking us and which type is being queried currently.
2476 internal Type invocation_type;
2477 internal Type qualifier_type;
2479 // The assembly that defines the type is that is calling us
2480 internal Assembly invocation_assembly;
2481 internal IList almost_match;
2483 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2485 if (invocation_type == null)
2488 if (is_static && qualifier_type == null)
2489 // It resolved from a simple name, so it should be visible.
2492 // A nested class has access to all the protected members visible to its parent.
2493 if (qualifier_type != null && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2496 if (IsNestedFamilyAccessible (invocation_type, m.DeclaringType)) {
2497 // Although a derived class can access protected members of its base class
2498 // it cannot do so through an instance of the base class (CS1540).
2499 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2501 qualifier_type == null ||
2502 IsInstantiationOfSameGenericType (invocation_type, qualifier_type) ||
2503 !IsFamilyAccessible (invocation_type, qualifier_type) ||
2504 IsNestedChildOf (invocation_type, qualifier_type))
2508 if (almost_match != null)
2509 almost_match.Add (m);
2515 // This filter filters by name + whether it is ok to include private
2516 // members in the search
2518 internal bool Filter (MemberInfo m, object filter_criteria)
2521 // Hack: we know that the filter criteria will always be in the
2522 // `closure' // fields.
2525 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2528 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2529 (invocation_type != null) &&
2530 IsPrivateAccessible (m.DeclaringType, invocation_type))
2534 // Ugly: we need to find out the type of `m', and depending
2535 // on this, tell whether we accept or not
2537 if (m is MethodBase){
2538 MethodBase mb = (MethodBase) m;
2539 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2541 if (ma == MethodAttributes.Public)
2544 if (ma == MethodAttributes.Private)
2545 return private_ok ||
2546 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2547 IsNestedChildOf (invocation_type, m.DeclaringType);
2549 if (invocation_assembly == mb.DeclaringType.Assembly ||
2550 TypeManager.IsFriendAssembly (mb.DeclaringType.Assembly)) {
2551 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2554 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2558 // Family, FamORAssem or FamANDAssem
2559 return CheckValidFamilyAccess (mb.IsStatic, m);
2562 if (m is FieldInfo){
2563 FieldInfo fi = (FieldInfo) m;
2564 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2566 if (fa == FieldAttributes.Public)
2569 if (fa == FieldAttributes.Private)
2570 return private_ok ||
2571 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2572 IsNestedChildOf (invocation_type, m.DeclaringType);
2574 if (invocation_assembly == fi.DeclaringType.Assembly ||
2575 TypeManager.IsFriendAssembly (fi.DeclaringType.Assembly)) {
2576 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamORAssem)
2579 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamANDAssem)
2583 // Family, FamORAssem or FamANDAssem
2584 return CheckValidFamilyAccess (fi.IsStatic, m);
2588 // EventInfos and PropertyInfos, return true because they lack
2589 // permission information, so we need to check later on the methods.
2595 static Closure closure = new Closure ();
2596 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2599 // Looks up a member called `name' in the `queried_type'. This lookup
2600 // is done by code that is contained in the definition for `invocation_type'
2601 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2603 // `invocation_type' is used to check whether we're allowed to access the requested
2604 // member wrt its protection level.
2606 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2607 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2608 // is B and qualifier_type is A). This is used to do the CS1540 check.
2610 // When resolving a SimpleName, `qualifier_type' is null.
2612 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2613 // the same than `queried_type' - except when we're being called from BaseAccess;
2614 // in this case, `invocation_type' is the current type and `queried_type' the base
2615 // type, so this'd normally trigger a CS1540.
2617 // The binding flags are `bf' and the kind of members being looked up are `mt'
2619 // The return value always includes private members which code in `invocation_type'
2620 // is allowed to access (using the specified `qualifier_type' if given); only use
2621 // BindingFlags.NonPublic to bypass the permission check.
2623 // The 'almost_match' argument is used for reporting error CS1540.
2625 // Returns an array of a single element for everything but Methods/Constructors
2626 // that might return multiple matches.
2628 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2629 Type queried_type, MemberTypes mt,
2630 BindingFlags original_bf, string name, IList almost_match)
2632 Timer.StartTimer (TimerType.MemberLookup);
2634 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2635 queried_type, mt, original_bf, name, almost_match);
2637 Timer.StopTimer (TimerType.MemberLookup);
2642 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2643 Type queried_type, MemberTypes mt,
2644 BindingFlags original_bf, string name, IList almost_match)
2646 BindingFlags bf = original_bf;
2648 ArrayList method_list = null;
2649 Type current_type = queried_type;
2650 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2651 bool skip_iface_check = true, used_cache = false;
2652 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
2654 closure.invocation_type = invocation_type;
2655 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2656 closure.qualifier_type = qualifier_type;
2657 closure.almost_match = almost_match;
2659 // This is from the first time we find a method
2660 // in most cases, we do not actually find a method in the base class
2661 // so we can just ignore it, and save the arraylist allocation
2662 MemberInfo [] first_members_list = null;
2663 bool use_first_members_list = false;
2669 // `NonPublic' is lame, because it includes both protected and
2670 // private methods, so we need to control this behavior by
2671 // explicitly tracking if a private method is ok or not.
2673 // The possible cases are:
2674 // public, private and protected (internal does not come into the
2677 if ((invocation_type != null) &&
2678 ((invocation_type == current_type) ||
2679 IsNestedChildOf (invocation_type, current_type)) ||
2681 bf = original_bf | BindingFlags.NonPublic;
2685 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2687 Timer.StopTimer (TimerType.MemberLookup);
2689 list = MemberLookup_FindMembers (
2690 current_type, mt, bf, name, out used_cache);
2692 Timer.StartTimer (TimerType.MemberLookup);
2695 // When queried for an interface type, the cache will automatically check all
2696 // inherited members, so we don't need to do this here. However, this only
2697 // works if we already used the cache in the first iteration of this loop.
2699 // If we used the cache in any further iteration, we can still terminate the
2700 // loop since the cache always looks in all base classes.
2706 skip_iface_check = false;
2708 if (current_type == TypeManager.object_type)
2711 current_type = current_type.BaseType;
2714 // This happens with interfaces, they have a null
2715 // basetype. Look members up in the Object class.
2717 if (current_type == null) {
2718 current_type = TypeManager.object_type;
2723 if (list.Length == 0)
2727 // Events and types are returned by both `static' and `instance'
2728 // searches, which means that our above FindMembers will
2729 // return two copies of the same.
2731 if (list.Length == 1 && !(list [0] is MethodBase)){
2736 // Multiple properties: we query those just to find out the indexer
2739 if (list [0] is PropertyInfo)
2743 // We found an event: the cache lookup returns both the event and
2744 // its private field.
2746 if (list [0] is EventInfo) {
2747 if ((list.Length == 2) && (list [1] is FieldInfo))
2748 return new MemberInfo [] { list [0] };
2755 // We found methods, turn the search into "method scan"
2759 if (first_members_list != null) {
2760 if (use_first_members_list) {
2761 method_list = CopyNewMethods (method_list, first_members_list);
2762 use_first_members_list = false;
2765 method_list = CopyNewMethods (method_list, list);
2767 first_members_list = list;
2768 use_first_members_list = true;
2770 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2772 } while (searching);
2774 if (use_first_members_list) {
2775 foreach (MemberInfo mi in first_members_list) {
2776 if (! (mi is MethodBase)) {
2777 method_list = CopyNewMethods (method_list, first_members_list);
2778 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2781 return (MemberInfo []) first_members_list;
2784 if (method_list != null && method_list.Count > 0) {
2785 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2788 // This happens if we already used the cache in the first iteration, in this case
2789 // the cache already looked in all interfaces.
2791 if (skip_iface_check)
2795 // Interfaces do not list members they inherit, so we have to
2798 if (!queried_type.IsInterface)
2801 if (queried_type.IsArray)
2802 queried_type = TypeManager.array_type;
2804 Type [] ifaces = GetInterfaces (queried_type);
2808 foreach (Type itype in ifaces){
2811 x = MemberLookup (null, null, itype, mt, bf, name, null);
2819 // Tests whether external method is really special
2820 public static bool IsSpecialMethod (MethodBase mb)
2822 string name = mb.Name;
2823 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2824 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2826 if (name.StartsWith ("add_"))
2827 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2829 if (name.StartsWith ("remove_"))
2830 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2832 if (name.StartsWith ("op_")){
2833 foreach (string oname in Unary.oper_names) {
2838 foreach (string oname in Binary.oper_names) {
2851 /// There is exactly one instance of this class per type.
2853 public sealed class TypeHandle : IMemberContainer {
2854 public readonly IMemberContainer BaseType;
2856 readonly int id = ++next_id;
2857 static int next_id = 0;
2859 static TypeHandle ()
2865 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2866 /// a TypeHandle yet, a new instance of it is created. This static method
2867 /// ensures that we'll only have one TypeHandle instance per type.
2869 private static TypeHandle GetTypeHandle (Type t)
2871 TypeHandle handle = (TypeHandle) type_hash [t];
2875 handle = new TypeHandle (t);
2876 type_hash.Add (t, handle);
2880 public static MemberCache GetMemberCache (Type t)
2882 return GetTypeHandle (t).MemberCache;
2885 public static void CleanUp ()
2890 public static void Reset ()
2892 type_hash = new PtrHashtable ();
2896 /// Returns the TypeHandle for TypeManager.object_type.
2898 public static IMemberContainer ObjectType {
2900 if (object_type != null)
2903 object_type = GetTypeHandle (TypeManager.object_type);
2910 /// Returns the TypeHandle for TypeManager.array_type.
2912 public static IMemberContainer ArrayType {
2914 if (array_type != null)
2917 array_type = GetTypeHandle (TypeManager.array_type);
2923 private static PtrHashtable type_hash;
2925 private static TypeHandle object_type = null;
2926 private static TypeHandle array_type = null;
2929 private string full_name;
2930 private bool is_interface;
2931 private MemberCache member_cache;
2932 private MemberCache base_cache;
2934 private TypeHandle (Type type)
2937 full_name = type.FullName != null ? type.FullName : type.Name;
2938 if (type.BaseType != null) {
2939 base_cache = TypeManager.LookupMemberCache (type.BaseType);
2940 BaseType = base_cache.Container;
2941 } else if (type.IsInterface)
2942 base_cache = TypeManager.LookupBaseInterfacesCache (type);
2943 this.is_interface = type.IsInterface || type.IsGenericParameter;
2944 this.member_cache = new MemberCache (this);
2947 // IMemberContainer methods
2949 public string Name {
2961 public MemberCache BaseCache {
2967 public bool IsInterface {
2969 return is_interface;
2973 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2975 MemberInfo [] members;
2976 if (type is GenericTypeParameterBuilder)
2977 return MemberList.Empty;
2978 if (mt == MemberTypes.Event)
2979 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2981 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2983 Array.Reverse (members);
2985 return new MemberList (members);
2988 // IMemberFinder methods
2990 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2991 MemberFilter filter, object criteria)
2993 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
2996 public MemberCache MemberCache {
2998 return member_cache;
3002 public override string ToString ()
3004 if (BaseType != null)
3005 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3007 return "TypeHandle (" + id + "," + Name + ")";