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 = t.GetInterfaces ();
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.IsGenericInstance) {
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 string name = GetFullName (t);
596 return Regex.Replace (name,
598 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
599 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
600 @"Boolean|String|Void|Null)" +
602 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
605 static public string CSharpName (Type[] types)
607 StringBuilder sb = new StringBuilder ();
608 foreach (Type t in types) {
609 sb.Append (CSharpName (t));
612 sb.Remove (sb.Length - 1, 1);
613 return sb.ToString ();
616 static String CSharpNameMatch (Match match)
618 string s = match.Groups [1].Captures [0].Value;
620 Replace ("int32", "int").
621 Replace ("uint32", "uint").
622 Replace ("int16", "short").
623 Replace ("uint16", "ushort").
624 Replace ("int64", "long").
625 Replace ("uint64", "ulong").
626 Replace ("single", "float").
627 Replace ("boolean", "bool")
628 + match.Groups [2].Captures [0].Value;
632 /// Returns the signature of the method with full namespace classification
634 static public string GetFullNameSignature (MemberInfo mi)
636 PropertyInfo pi = mi as PropertyInfo;
638 MethodBase pmi = pi.GetGetMethod ();
640 pmi = pi.GetSetMethod ();
641 if (GetParameterData (pmi).Count > 0)
644 return (mi is MethodBase)
645 ? CSharpSignature (mi as MethodBase)
646 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
649 private static int GetFullName (Type t, StringBuilder sb)
653 if (!t.IsGenericType) {
654 sb.Append (t.FullName);
658 if (t.DeclaringType != null) {
659 pos = GetFullName (t.DeclaringType, sb);
661 sb.Append (RemoveGenericArity (t.Name));
663 sb.Append (RemoveGenericArity (t.FullName));
666 Type[] this_args = GetTypeArguments (t);
668 if (this_args.Length < pos)
669 throw new InternalErrorException (
670 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
671 if (this_args.Length == pos)
676 sb.Append (CSharpName (this_args [pos++]));
677 if (pos == this_args.Length)
685 public static string GetFullName (Type t)
687 if (t.IsGenericParameter)
689 if (!t.IsGenericType)
692 StringBuilder sb = new StringBuilder ();
693 int pos = GetFullName (t, sb);
695 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
696 return sb.ToString ();
699 static string RemoveGenericArity (string from)
701 int i = from.IndexOf ('`');
703 return from.Substring (0, i);
708 /// When we need to report accessors as well
710 static public string CSharpSignature (MethodBase mb)
712 return CSharpSignature (mb, false);
716 /// Returns the signature of the method
718 static public string CSharpSignature (MethodBase mb, bool show_accessor)
720 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
723 ParameterData iparams = GetParameterData (mb);
724 string parameters = iparams.GetSignatureForError ();
725 string accessor = "";
728 if (mb.IsSpecialName) {
729 Operator.OpType ot = Operator.GetOperatorType (mb.Name);
730 if (ot != Operator.OpType.TOP) {
731 sig.Append ("operator ");
732 sig.Append (Operator.GetName (ot));
733 sig.Append (parameters);
734 return sig.ToString ();
737 if (mb.Name.StartsWith ("get_") || mb.Name.StartsWith ("set_")) {
738 accessor = mb.Name.Substring (0, 3);
743 if (mb.IsSpecialName && !mb.IsConstructor) {
744 if (iparams.Count > (mb.Name.StartsWith ("get_") ? 0 : 1)) {
745 sig.Append ("this[");
747 sig.Append (parameters.Substring (1, parameters.Length - 2));
750 int before_ret_val = parameters.LastIndexOf (',');
751 if (before_ret_val < 0)
752 sig.Append (parameters.Substring (1, parameters.Length - 2));
754 sig.Append (parameters.Substring (1, before_ret_val - 1));
758 sig.Append (mb.Name.Substring (4));
761 if (mb.Name == ".ctor")
762 sig.Append (mb.DeclaringType.Name);
764 sig.Append (mb.Name);
766 if (mb.Mono_IsInflatedMethod || TypeManager.IsGenericMethod (mb)) {
767 Type[] args = mb.GetGenericArguments ();
769 for (int i = 0; i < args.Length; i++) {
772 sig.Append (args [i].Name);
778 sig.Append (parameters);
781 if (show_accessor && accessor.Length > 0) {
783 sig.Append (accessor);
786 return sig.ToString ();
789 public static string GetMethodName (MethodInfo m)
791 if (!IsGenericMethod (m))
794 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
797 static public string CSharpSignature (EventInfo ei)
799 return CSharpName (ei.DeclaringType) + '.' + ei.Name;
803 /// Looks up a type, and aborts if it is not found. This is used
804 /// by types required by the compiler
806 static Type CoreLookupType (string ns_name, string name)
808 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
809 FullNamedExpression fne = ns.Lookup (RootContext.Tree.Types, name, Location.Null);
810 Type t = fne == null ? null : fne.Type;
812 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
817 /// Returns the MethodInfo for a method named `name' defined
818 /// in type `t' which takes arguments of types `args'
820 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
824 BindingFlags flags = instance_and_static | BindingFlags.Public;
830 flags |= BindingFlags.NonPublic;
832 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
833 if (list.Count == 0) {
835 Report.Error (-19, "Can not find the core function `" + name + "'");
839 MethodInfo mi = list [0] as MethodInfo;
842 Report.Error (-19, "Can not find the core function `" + name + "'");
849 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
851 return GetMethod (t, name, args, false, report_errors);
854 static MethodInfo GetMethod (Type t, string name, Type [] args)
856 return GetMethod (t, name, args, true);
860 /// Returns the PropertyInfo for a property named `name' defined
863 public static PropertyInfo GetProperty (Type t, string name)
865 MemberList list = FindMembers (t, MemberTypes.Property, BindingFlags.Public |
866 BindingFlags.Instance, Type.FilterName, name);
867 if (list.Count == 0) {
868 Report.Error (-19, "Can not find the core property `" + name + "'");
872 PropertyInfo pi = list [0] as PropertyInfo;
874 Report.Error (-19, "Can not find the core function `" + name + "'");
882 /// Returns the ConstructorInfo for "args"
884 public static ConstructorInfo GetConstructor (Type t, Type [] args)
893 throw new InternalErrorException ("Core types haven't been initialized yet?");
895 list = FindMembers (t, MemberTypes.Constructor,
896 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
897 signature_filter, sig);
898 if (list.Count == 0){
899 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
903 ConstructorInfo ci = list [0] as ConstructorInfo;
905 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
912 public static void InitEnumUnderlyingTypes ()
915 int32_type = CoreLookupType ("System", "Int32");
916 int64_type = CoreLookupType ("System", "Int64");
917 uint32_type = CoreLookupType ("System", "UInt32");
918 uint64_type = CoreLookupType ("System", "UInt64");
919 byte_type = CoreLookupType ("System", "Byte");
920 sbyte_type = CoreLookupType ("System", "SByte");
921 short_type = CoreLookupType ("System", "Int16");
922 ushort_type = CoreLookupType ("System", "UInt16");
926 /// The types have to be initialized after the initial
927 /// population of the type has happened (for example, to
928 /// bootstrap the corlib.dll
930 public static void InitCoreTypes ()
932 object_type = CoreLookupType ("System", "Object");
933 value_type = CoreLookupType ("System", "ValueType");
935 InitEnumUnderlyingTypes ();
937 char_type = CoreLookupType ("System", "Char");
938 string_type = CoreLookupType ("System", "String");
939 float_type = CoreLookupType ("System", "Single");
940 double_type = CoreLookupType ("System", "Double");
941 char_ptr_type = GetPointerType (char_type);
942 decimal_type = CoreLookupType ("System", "Decimal");
943 bool_type = CoreLookupType ("System", "Boolean");
944 enum_type = CoreLookupType ("System", "Enum");
946 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate");
947 delegate_type = CoreLookupType ("System", "Delegate");
949 array_type = CoreLookupType ("System", "Array");
950 void_type = CoreLookupType ("System", "Void");
951 type_type = CoreLookupType ("System", "Type");
953 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle");
954 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle");
955 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers");
956 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute");
957 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle");
958 asynccallback_type = CoreLookupType ("System", "AsyncCallback");
959 iasyncresult_type = CoreLookupType ("System", "IAsyncResult");
960 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator");
961 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable");
962 idisposable_type = CoreLookupType ("System", "IDisposable");
963 icloneable_type = CoreLookupType ("System", "ICloneable");
964 iconvertible_type = CoreLookupType ("System", "IConvertible");
965 monitor_type = CoreLookupType ("System.Threading", "Monitor");
966 intptr_type = CoreLookupType ("System", "IntPtr");
968 attribute_type = CoreLookupType ("System", "Attribute");
969 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute");
970 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute");
971 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute");
972 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute");
973 param_array_type = CoreLookupType ("System", "ParamArrayAttribute");
974 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute");
975 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute");
976 typed_reference_type = CoreLookupType ("System", "TypedReference");
977 arg_iterator_type = CoreLookupType ("System", "ArgIterator");
978 mbr_type = CoreLookupType ("System", "MarshalByRefObject");
979 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute");
981 unverifiable_code_type= CoreLookupType ("System.Security", "UnverifiableCodeAttribute");
983 void_ptr_type = GetPointerType (void_type);
985 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute");
987 exception_type = CoreLookupType ("System", "Exception");
988 invalid_operation_exception_type = CoreLookupType ("System", "InvalidOperationException");
989 not_supported_exception_type = CoreLookupType ("System", "NotSupportedException");
994 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute");
995 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute");
996 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute");
997 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute");
998 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute");
999 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute");
1000 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute");
1001 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute");
1002 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute");
1003 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute");
1004 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute");
1006 InitGenericCoreTypes ();
1011 compiler_generated_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "CompilerGeneratedAttribute");
1012 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute");
1013 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute");
1014 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute");
1015 runtime_compatibility_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeCompatibilityAttribute");
1017 // When compiling corlib, store the "real" types here.
1019 if (!RootContext.StdLib) {
1020 system_int32_type = typeof (System.Int32);
1021 system_array_type = typeof (System.Array);
1022 system_type_type = typeof (System.Type);
1023 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1025 system_int_array_get_length = GetMethod (
1026 system_array_type, "get_Length", Type.EmptyTypes);
1027 system_int_array_get_rank = GetMethod (
1028 system_array_type, "get_Rank", Type.EmptyTypes);
1029 system_object_array_clone = GetMethod (
1030 system_array_type, "Clone", Type.EmptyTypes);
1032 Type [] system_int_arg = { system_int32_type };
1033 system_int_array_get_length_int = GetMethod (
1034 system_array_type, "GetLength", system_int_arg);
1035 system_int_array_get_upper_bound_int = GetMethod (
1036 system_array_type, "GetUpperBound", system_int_arg);
1037 system_int_array_get_lower_bound_int = GetMethod (
1038 system_array_type, "GetLowerBound", system_int_arg);
1040 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1041 system_void_array_copyto_array_int = GetMethod (
1042 system_array_type, "CopyTo", system_array_int_arg);
1044 Type [] system_3_type_arg = {
1045 system_type_type, system_type_type, system_type_type };
1046 Type [] system_4_type_arg = {
1047 system_type_type, system_type_type, system_type_type, system_type_type };
1049 MethodInfo set_corlib_type_builders = GetMethod (
1050 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1051 system_4_type_arg, true, false);
1053 if (set_corlib_type_builders != null) {
1054 object[] args = new object [4];
1055 args [0] = object_type;
1056 args [1] = value_type;
1057 args [2] = enum_type;
1058 args [3] = void_type;
1060 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1062 // Compatibility for an older version of the class libs.
1063 set_corlib_type_builders = GetMethod (
1064 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1065 system_3_type_arg, true, true);
1067 if (set_corlib_type_builders == null) {
1068 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1072 object[] args = new object [3];
1073 args [0] = object_type;
1074 args [1] = value_type;
1075 args [2] = enum_type;
1077 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1081 system_object_expr.Type = object_type;
1082 system_string_expr.Type = string_type;
1083 system_boolean_expr.Type = bool_type;
1084 system_decimal_expr.Type = decimal_type;
1085 system_single_expr.Type = float_type;
1086 system_double_expr.Type = double_type;
1087 system_sbyte_expr.Type = sbyte_type;
1088 system_byte_expr.Type = byte_type;
1089 system_int16_expr.Type = short_type;
1090 system_uint16_expr.Type = ushort_type;
1091 system_int32_expr.Type = int32_type;
1092 system_uint32_expr.Type = uint32_type;
1093 system_int64_expr.Type = int64_type;
1094 system_uint64_expr.Type = uint64_type;
1095 system_char_expr.Type = char_type;
1096 system_void_expr.Type = void_type;
1097 system_asynccallback_expr.Type = asynccallback_type;
1098 system_iasyncresult_expr.Type = iasyncresult_type;
1099 system_valuetype_expr.Type = value_type;
1102 // These are only used for compare purposes
1104 anonymous_method_type = typeof (AnonymousMethod);
1105 null_type = typeof (NullType);
1109 // The helper methods that are used by the compiler
1111 public static void InitCodeHelpers ()
1114 // Now load the default methods that we use.
1116 Type [] string_string = { string_type, string_type };
1117 string_concat_string_string = GetMethod (
1118 string_type, "Concat", string_string);
1119 Type [] string_string_string = { string_type, string_type, string_type };
1120 string_concat_string_string_string = GetMethod (
1121 string_type, "Concat", string_string_string);
1122 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1123 string_concat_string_string_string_string = GetMethod (
1124 string_type, "Concat", string_string_string_string);
1125 Type[] params_string = { GetConstructedType (string_type, "[]") };
1126 string_concat_string_dot_dot_dot = GetMethod (
1127 string_type, "Concat", params_string);
1129 Type [] object_object = { object_type, object_type };
1130 string_concat_object_object = GetMethod (
1131 string_type, "Concat", object_object);
1132 Type [] object_object_object = { object_type, object_type, object_type };
1133 string_concat_object_object_object = GetMethod (
1134 string_type, "Concat", object_object_object);
1135 Type[] params_object = { GetConstructedType (object_type, "[]") };
1136 string_concat_object_dot_dot_dot = GetMethod (
1137 string_type, "Concat", params_object);
1139 Type [] string_ = { string_type };
1140 string_isinterneted_string = GetMethod (
1141 string_type, "IsInterned", string_);
1143 Type [] runtime_type_handle = { runtime_handle_type };
1144 system_type_get_type_from_handle = GetMethod (
1145 type_type, "GetTypeFromHandle", runtime_type_handle);
1147 Type [] delegate_delegate = { delegate_type, delegate_type };
1148 delegate_combine_delegate_delegate = GetMethod (
1149 delegate_type, "Combine", delegate_delegate);
1151 delegate_remove_delegate_delegate = GetMethod (
1152 delegate_type, "Remove", delegate_delegate);
1157 ienumerator_getcurrent = GetProperty (
1158 ienumerator_type, "Current");
1159 bool_movenext_void = GetMethod (
1160 ienumerator_type, "MoveNext", Type.EmptyTypes);
1161 void_reset_void = GetMethod (
1162 ienumerator_type, "Reset", Type.EmptyTypes);
1163 void_dispose_void = GetMethod (
1164 idisposable_type, "Dispose", Type.EmptyTypes);
1165 int_get_offset_to_string_data = GetMethod (
1166 runtime_helpers_type, "get_OffsetToStringData", Type.EmptyTypes);
1167 int_array_get_length = GetMethod (
1168 array_type, "get_Length", Type.EmptyTypes);
1169 int_array_get_rank = GetMethod (
1170 array_type, "get_Rank", Type.EmptyTypes);
1171 ienumerable_getenumerator_void = GetMethod (
1172 ienumerable_type, "GetEnumerator", Type.EmptyTypes);
1177 Type [] int_arg = { int32_type };
1178 int_array_get_length_int = GetMethod (
1179 array_type, "GetLength", int_arg);
1180 int_array_get_upper_bound_int = GetMethod (
1181 array_type, "GetUpperBound", int_arg);
1182 int_array_get_lower_bound_int = GetMethod (
1183 array_type, "GetLowerBound", int_arg);
1186 // System.Array methods
1188 object_array_clone = GetMethod (
1189 array_type, "Clone", Type.EmptyTypes);
1190 Type [] array_int_arg = { array_type, int32_type };
1191 void_array_copyto_array_int = GetMethod (
1192 array_type, "CopyTo", array_int_arg);
1197 Type [] object_arg = { object_type };
1198 void_monitor_enter_object = GetMethod (
1199 monitor_type, "Enter", object_arg);
1200 void_monitor_exit_object = GetMethod (
1201 monitor_type, "Exit", object_arg);
1203 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1205 void_initializearray_array_fieldhandle = GetMethod (
1206 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1211 int_getlength_int = GetMethod (
1212 array_type, "GetLength", int_arg);
1215 // Decimal constructors
1217 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1218 void_decimal_ctor_five_args = GetConstructor (
1219 decimal_type, dec_arg);
1221 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1226 unverifiable_code_ctor = GetConstructor (unverifiable_code_type, Type.EmptyTypes);
1227 default_member_ctor = GetConstructor (default_member_type, string_);
1229 Type[] short_arg = { short_type };
1230 struct_layout_attribute_ctor = GetConstructor (struct_layout_attribute_type, short_arg);
1232 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1233 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1235 field_offset_attribute_ctor = GetConstructor (field_offset_attribute_type, new Type []
1241 compiler_generated_attr = new CustomAttributeBuilder (
1242 GetConstructor (compiler_generated_attr_type, Type.EmptyTypes), new object[0]);
1244 Type[] type_int_arg = { type_type, int32_type };
1245 fixed_buffer_attr_ctor = GetConstructor (fixed_buffer_attr_type, type_int_arg);
1248 object_ctor = GetConstructor (object_type, Type.EmptyTypes);
1250 InitGenericCodeHelpers ();
1253 static public ConstructorInfo ConsParamArrayAttribute {
1255 if (cons_param_array_attribute == null)
1256 cons_param_array_attribute = GetConstructor (param_array_type, Type.EmptyTypes);
1257 return cons_param_array_attribute;
1261 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1264 /// This is the "old", non-cache based FindMembers() function. We cannot use
1265 /// the cache here because there is no member name argument.
1267 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1268 MemberFilter filter, object criteria)
1270 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1273 // `builder_to_declspace' contains all dynamic types.
1277 Timer.StartTimer (TimerType.FindMembers);
1278 list = decl.FindMembers (mt, bf, filter, criteria);
1279 Timer.StopTimer (TimerType.FindMembers);
1284 // We have to take care of arrays specially, because GetType on
1285 // a TypeBuilder array will return a Type, not a TypeBuilder,
1286 // and we can not call FindMembers on this type.
1288 if (t.IsSubclassOf (TypeManager.array_type))
1289 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1291 if (t is GenericTypeParameterBuilder) {
1292 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1294 Timer.StartTimer (TimerType.FindMembers);
1295 MemberList list = tparam.FindMembers (
1296 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1297 Timer.StopTimer (TimerType.FindMembers);
1302 // Since FindMembers will not lookup both static and instance
1303 // members, we emulate this behaviour here.
1305 if ((bf & instance_and_static) == instance_and_static){
1306 MemberInfo [] i_members = t.FindMembers (
1307 mt, bf & ~BindingFlags.Static, filter, criteria);
1309 int i_len = i_members.Length;
1311 MemberInfo one = i_members [0];
1314 // If any of these are present, we are done!
1316 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1317 return new MemberList (i_members);
1320 MemberInfo [] s_members = t.FindMembers (
1321 mt, bf & ~BindingFlags.Instance, filter, criteria);
1323 int s_len = s_members.Length;
1324 if (i_len > 0 || s_len > 0)
1325 return new MemberList (i_members, s_members);
1328 return new MemberList (i_members);
1330 return new MemberList (s_members);
1334 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1339 /// This method is only called from within MemberLookup. It tries to use the member
1340 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1341 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1342 /// our return value will already contain all inherited members and the caller don't need
1343 /// to check base classes and interfaces anymore.
1345 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1346 string name, out bool used_cache)
1351 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1352 // and we can ask the DeclSpace for the MemberCache.
1354 if (t is TypeBuilder) {
1355 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1356 cache = decl.MemberCache;
1359 // If this DeclSpace has a MemberCache, use it.
1362 if (cache != null) {
1364 return cache.FindMembers (
1365 mt, bf, name, FilterWithClosure_delegate, null);
1368 // If there is no MemberCache, we need to use the "normal" FindMembers.
1369 // Note, this is a VERY uncommon route!
1372 Timer.StartTimer (TimerType.FindMembers);
1373 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1374 FilterWithClosure_delegate, name);
1375 Timer.StopTimer (TimerType.FindMembers);
1377 return (MemberInfo []) list;
1381 // We have to take care of arrays specially, because GetType on
1382 // a TypeBuilder array will return a Type, not a TypeBuilder,
1383 // and we can not call FindMembers on this type.
1385 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1387 return TypeHandle.ArrayType.MemberCache.FindMembers (
1388 mt, bf, name, FilterWithClosure_delegate, null);
1391 if (t is GenericTypeParameterBuilder) {
1392 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1395 Timer.StartTimer (TimerType.FindMembers);
1396 list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1397 FilterWithClosure_delegate, name);
1398 Timer.StopTimer (TimerType.FindMembers);
1400 return (MemberInfo []) list;
1403 if (t.IsGenericInstance && (mt == MemberTypes.NestedType)) {
1405 // This happens if we're resolving a class'es base class and interfaces
1406 // in TypeContainer.DefineType(). At this time, the types aren't
1407 // populated yet, so we can't use the cache.
1409 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1410 FilterWithClosure_delegate, name);
1416 // This call will always succeed. There is exactly one TypeHandle instance per
1417 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1418 // the corresponding MemberCache.
1420 cache = TypeHandle.GetMemberCache (t);
1423 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1426 public static bool IsBuiltinType (Type t)
1428 t = TypeToCoreType (t);
1429 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1430 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1431 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1432 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1438 public static bool IsBuiltinType (TypeContainer tc)
1440 return IsBuiltinType (tc.TypeBuilder);
1444 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1445 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1447 public static bool IsPrimitiveType (Type t)
1449 return (t == int32_type || t == uint32_type ||
1450 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1451 t == char_type || t == short_type || t == bool_type ||
1452 t == sbyte_type || t == byte_type || t == ushort_type);
1455 public static bool IsDelegateType (Type t)
1457 t = DropGenericTypeArguments (t);
1458 if (t.IsSubclassOf (TypeManager.delegate_type))
1464 public static bool IsEnumType (Type t)
1466 if (builder_to_declspace [t] is Enum)
1472 public static bool IsBuiltinOrEnum (Type t)
1474 if (IsBuiltinType (t))
1483 public static bool IsNullType (Type t)
1485 return t == null_type;
1488 public static bool IsAttributeType (Type t)
1490 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1493 static Stack unmanaged_enclosing_types = new Stack (4);
1496 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1498 public static bool IsUnmanagedType (Type t)
1500 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1501 if (unmanaged_enclosing_types.Contains (t))
1504 // builtins that are not unmanaged types
1505 if (t == TypeManager.object_type || t == TypeManager.string_type)
1508 if (IsBuiltinOrEnum (t))
1511 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1515 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1519 if (!IsValueType (t))
1522 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1523 if (p.IsGenericTypeDefinition)
1527 unmanaged_enclosing_types.Push (t);
1531 if (t is TypeBuilder) {
1532 TypeContainer tc = LookupTypeContainer (t);
1533 if (tc.Fields != null){
1534 foreach (FieldMember f in tc.Fields){
1535 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1536 if ((f.ModFlags & Modifiers.STATIC) != 0)
1538 if (f.MemberType == null)
1540 if (!IsUnmanagedType (f.MemberType)){
1541 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1547 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1549 foreach (FieldInfo f in fields){
1550 if (!IsUnmanagedType (f.FieldType)){
1551 Report.SymbolRelatedToPreviousError (f);
1557 unmanaged_enclosing_types.Pop ();
1562 public static bool IsValueType (Type t)
1564 return t.IsGenericParameter || t.IsValueType;
1567 public static bool IsInterfaceType (Type t)
1569 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1573 return tc.Kind == Kind.Interface;
1576 public static bool IsSubclassOf (Type type, Type base_type)
1578 TypeParameter tparam = LookupTypeParameter (type);
1579 TypeParameter pparam = LookupTypeParameter (base_type);
1581 if ((tparam != null) && (pparam != null)) {
1582 if (tparam == pparam)
1585 return tparam.IsSubclassOf (base_type);
1589 if (IsEqual (type, base_type))
1592 type = type.BaseType;
1593 } while (type != null);
1598 public static bool IsPrivateAccessible (Type type, Type parent)
1600 if (type.Equals (parent))
1602 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1605 public static bool IsFamilyAccessible (Type type, Type parent)
1607 TypeParameter tparam = LookupTypeParameter (type);
1608 TypeParameter pparam = LookupTypeParameter (parent);
1610 if ((tparam != null) && (pparam != null)) {
1611 if (tparam == pparam)
1614 return tparam.IsSubclassOf (parent);
1618 if (IsInstantiationOfSameGenericType (type, parent))
1621 type = type.BaseType;
1622 } while (type != null);
1628 // Checks whether `type' is a subclass or nested child of `base_type'.
1630 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1633 if (IsFamilyAccessible (type, base_type))
1636 // Handle nested types.
1637 type = type.DeclaringType;
1638 } while (type != null);
1644 // Checks whether `type' is a nested child of `parent'.
1646 public static bool IsNestedChildOf (Type type, Type parent)
1648 if (IsEqual (type, parent))
1651 type = type.DeclaringType;
1652 while (type != null) {
1653 if (IsEqual (type, parent))
1656 type = type.DeclaringType;
1663 // Checks whether `extern_type' is friend of the output assembly
1665 public static bool IsFriendAssembly (Assembly assembly)
1667 if (assembly_internals_vis_attrs.Contains (assembly))
1668 return (bool)(assembly_internals_vis_attrs [assembly]);
1670 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1671 if (attrs.Length == 0) {
1672 assembly_internals_vis_attrs.Add (assembly, false);
1676 AssemblyName this_name = CodeGen.Assembly.Name;
1677 byte [] this_token = this_name.GetPublicKeyToken ();
1678 bool is_friend = false;
1679 foreach (InternalsVisibleToAttribute attr in attrs) {
1680 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1683 AssemblyName aname = null;
1685 aname = new AssemblyName (attr.AssemblyName);
1686 } catch (FileLoadException) {
1687 } catch (ArgumentException) {
1690 if (aname == null || aname.Name != this_name.Name)
1693 byte [] key_token = aname.GetPublicKeyToken ();
1694 if (key_token != null) {
1695 if (this_token == null) {
1696 // Same name, but key token is null
1697 Error_FriendAccessNameNotMatching (aname.FullName);
1701 if (!CompareKeyTokens (this_token, key_token))
1709 assembly_internals_vis_attrs.Add (assembly, is_friend);
1713 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1715 for (int i = 0; i < token1.Length; i++)
1716 if (token1 [i] != token2 [i])
1722 static void Error_FriendAccessNameNotMatching (string other_name)
1724 Report.Error (281, "Friend access was granted to `" + other_name +
1725 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1726 "'. Try adding a reference to `" + other_name +
1727 "' or change the output assembly name to match it");
1731 // Do the right thing when returning the element type of an
1732 // array type based on whether we are compiling corlib or not
1734 public static Type GetElementType (Type t)
1736 if (RootContext.StdLib)
1737 return t.GetElementType ();
1739 return TypeToCoreType (t.GetElementType ());
1743 /// This method is not implemented by MS runtime for dynamic types
1745 public static bool HasElementType (Type t)
1747 return t.IsArray || t.IsPointer || t.IsByRef;
1751 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1755 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1756 /// for anything which is dynamic, and we need this in a number of places,
1757 /// we register this information here, and use it afterwards.
1759 static public void RegisterMethod (MethodBase mb, Parameters ip)
1761 method_params.Add (mb, ip);
1764 static public ParameterData GetParameterData (MethodBase mb)
1766 ParameterData pd = (ParameterData)method_params [mb];
1768 if (mb is MethodBuilder || mb is ConstructorBuilder)
1769 throw new InternalErrorException ("Argument for Method not registered" + mb);
1771 pd = new ReflectionParameters (mb);
1772 method_params.Add (mb, pd);
1777 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1779 if (!method_overrides.Contains (override_method))
1780 method_overrides [override_method] = base_method;
1781 if (method_overrides [override_method] != base_method)
1782 throw new InternalErrorException ("Override mismatch: " + override_method);
1785 static public bool IsOverride (MethodBase m)
1787 return m.IsVirtual &&
1788 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1789 (m is MethodBuilder || method_overrides.Contains (m));
1792 static public MethodBase TryGetBaseDefinition (MethodBase m)
1794 return (MethodBase) method_overrides [m];
1798 /// Returns the argument types for an indexer based on its PropertyInfo
1800 /// For dynamic indexers, we use the compiler provided types, for
1801 /// indexers from existing assemblies we load them from GetParameters,
1802 /// and insert them into the cache
1804 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1806 if (indexer_arguments.Contains (indexer))
1807 return (Type []) indexer_arguments [indexer];
1808 else if (indexer is PropertyBuilder)
1809 // If we're a PropertyBuilder and not in the
1810 // `indexer_arguments' hash, then we're a property and
1812 return Type.EmptyTypes;
1814 ParameterInfo [] pi = indexer.GetIndexParameters ();
1815 // Property, not an indexer.
1817 return Type.EmptyTypes;
1819 Type [] types = new Type [c];
1821 for (int i = 0; i < c; i++)
1822 types [i] = pi [i].ParameterType;
1824 indexer_arguments.Add (indexer, types);
1829 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1831 fields.Add (fb, ic);
1834 public static IConstant GetConstant (FieldInfo fb)
1839 return (IConstant)fields [fb];
1842 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1844 if (fieldbuilders_to_fields.Contains (fb))
1847 fieldbuilders_to_fields.Add (fb, f);
1852 // The return value can be null; This will be the case for
1853 // auxiliary FieldBuilders created by the compiler that have no
1854 // real field being declared on the source code
1856 static public FieldBase GetField (FieldInfo fb)
1858 if (fb.DeclaringType.IsGenericInstance)
1859 fb = fb.Mono_GetGenericFieldDefinition ();
1861 return (FieldBase) fieldbuilders_to_fields [fb];
1864 static Hashtable events;
1866 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1869 events = new Hashtable ();
1871 if (!events.Contains (eb)) {
1872 events.Add (eb, new Pair (add, remove));
1876 static public MethodInfo GetAddMethod (EventInfo ei)
1878 if (ei is MyEventBuilder) {
1879 Pair pair = (Pair) events [ei];
1881 return (MethodInfo) pair.First;
1883 return ei.GetAddMethod (true);
1886 static public MethodInfo GetRemoveMethod (EventInfo ei)
1888 if (ei is MyEventBuilder) {
1889 Pair pair = (Pair) events [ei];
1891 return (MethodInfo) pair.Second;
1893 return ei.GetRemoveMethod (true);
1896 static Hashtable priv_fields_events;
1898 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1900 if (priv_fields_events == null)
1901 priv_fields_events = new Hashtable ();
1903 if (priv_fields_events.Contains (einfo))
1906 priv_fields_events.Add (einfo, builder);
1911 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1913 if (priv_fields_events == null)
1916 return (MemberInfo) priv_fields_events [ei];
1919 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1920 MethodBase set, Type[] args)
1922 indexer_arguments.Add (pb, args);
1927 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1929 Hashtable hash = new Hashtable ();
1930 return CheckStructCycles (tc, seen, hash);
1933 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1936 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1940 // `seen' contains all types we've already visited.
1942 if (seen.Contains (tc))
1944 seen.Add (tc, null);
1946 if (tc.Fields == null)
1949 foreach (FieldMember field in tc.Fields) {
1950 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1953 Type ftype = field.FieldBuilder.FieldType;
1954 TypeContainer ftc = LookupTypeContainer (ftype);
1958 if (hash.Contains (ftc)) {
1959 Report.Error (523, tc.Location,
1960 "Struct member `{0}.{1}' of type `{2}' " +
1961 "causes a cycle in the struct layout",
1962 tc.Name, field.Name, ftc.Name);
1967 // `hash' contains all types in the current path.
1969 hash.Add (tc, null);
1971 bool ok = CheckStructCycles (ftc, seen, hash);
1978 if (!seen.Contains (ftc))
1979 seen.Add (ftc, null);
1986 /// Given an array of interface types, expand and eliminate repeated ocurrences
1987 /// of an interface.
1991 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1994 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
1996 ArrayList new_ifaces = new ArrayList ();
1998 foreach (TypeExpr iface in base_interfaces){
1999 TypeExpr texpr = iface.ResolveAsTypeTerminal (ec);
2003 Type itype = texpr.ResolveType (ec);
2005 if (new_ifaces.Contains (itype))
2008 new_ifaces.Add (itype);
2010 Type [] implementing = itype.GetInterfaces ();
2012 foreach (Type imp in implementing){
2013 if (!new_ifaces.Contains (imp))
2014 new_ifaces.Add (imp);
2017 Type [] ret = new Type [new_ifaces.Count];
2018 new_ifaces.CopyTo (ret, 0);
2022 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2024 ArrayList new_ifaces = new ArrayList ();
2026 foreach (Type itype in base_interfaces){
2027 if (new_ifaces.Contains (itype))
2030 new_ifaces.Add (itype);
2032 Type [] implementing = itype.GetInterfaces ();
2034 foreach (Type imp in implementing){
2035 if (!new_ifaces.Contains (imp))
2036 new_ifaces.Add (imp);
2039 Type [] ret = new Type [new_ifaces.Count];
2040 new_ifaces.CopyTo (ret, 0);
2044 static PtrHashtable iface_cache = new PtrHashtable ();
2047 /// This function returns the interfaces in the type `t'. Works with
2048 /// both types and TypeBuilders.
2050 public static Type [] GetInterfaces (Type t)
2052 Type [] cached = iface_cache [t] as Type [];
2057 // The reason for catching the Array case is that Reflection.Emit
2058 // will not return a TypeBuilder for Array types of TypeBuilder types,
2059 // but will still throw an exception if we try to call GetInterfaces
2062 // Since the array interfaces are always constant, we return those for
2067 t = TypeManager.array_type;
2069 if ((t is TypeBuilder) || t.IsGenericInstance) {
2070 Type [] base_ifaces;
2072 if (t.BaseType == null)
2073 base_ifaces = Type.EmptyTypes;
2075 base_ifaces = GetInterfaces (t.BaseType);
2077 if (t.IsGenericInstance)
2078 type_ifaces = t.GetInterfaces ();
2080 type_ifaces = (Type []) builder_to_ifaces [t];
2081 if (type_ifaces == null)
2082 type_ifaces = Type.EmptyTypes;
2084 int base_count = base_ifaces.Length;
2085 Type [] result = new Type [base_count + type_ifaces.Length];
2086 base_ifaces.CopyTo (result, 0);
2087 type_ifaces.CopyTo (result, base_count);
2089 iface_cache [t] = result;
2091 } else if (t is GenericTypeParameterBuilder){
2092 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2093 if (type_ifaces == null)
2094 type_ifaces = Type.EmptyTypes;
2096 iface_cache [t] = type_ifaces;
2099 Type[] ifaces = t.GetInterfaces ();
2100 iface_cache [t] = ifaces;
2106 // gets the interfaces that are declared explicitly on t
2108 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2110 return (Type []) builder_to_ifaces [t];
2114 /// The following is used to check if a given type implements an interface.
2115 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2117 public static bool ImplementsInterface (Type t, Type iface)
2122 // FIXME OPTIMIZATION:
2123 // as soon as we hit a non-TypeBuiler in the interface
2124 // chain, we could return, as the `Type.GetInterfaces'
2125 // will return all the interfaces implement by the type
2129 interfaces = GetInterfaces (t);
2131 if (interfaces != null){
2132 foreach (Type i in interfaces){
2139 } while (t != null);
2144 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2146 // This is a custom version of Convert.ChangeType() which works
2147 // with the TypeBuilder defined types when compiling corlib.
2148 public static object ChangeType (object value, Type conversionType, out bool error)
2150 IConvertible convert_value = value as IConvertible;
2152 if (convert_value == null){
2158 // We must use Type.Equals() here since `conversionType' is
2159 // the TypeBuilder created version of a system type and not
2160 // the system type itself. You cannot use Type.GetTypeCode()
2161 // on such a type - it'd always return TypeCode.Object.
2165 if (conversionType.Equals (typeof (Boolean)))
2166 return (object)(convert_value.ToBoolean (nf_provider));
2167 else if (conversionType.Equals (typeof (Byte)))
2168 return (object)(convert_value.ToByte (nf_provider));
2169 else if (conversionType.Equals (typeof (Char)))
2170 return (object)(convert_value.ToChar (nf_provider));
2171 else if (conversionType.Equals (typeof (DateTime)))
2172 return (object)(convert_value.ToDateTime (nf_provider));
2173 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2174 return (object)(convert_value.ToDecimal (nf_provider));
2175 else if (conversionType.Equals (typeof (Double)))
2176 return (object)(convert_value.ToDouble (nf_provider));
2177 else if (conversionType.Equals (typeof (Int16)))
2178 return (object)(convert_value.ToInt16 (nf_provider));
2179 else if (conversionType.Equals (typeof (Int32)))
2180 return (object)(convert_value.ToInt32 (nf_provider));
2181 else if (conversionType.Equals (typeof (Int64)))
2182 return (object)(convert_value.ToInt64 (nf_provider));
2183 else if (conversionType.Equals (typeof (SByte)))
2184 return (object)(convert_value.ToSByte (nf_provider));
2185 else if (conversionType.Equals (typeof (Single)))
2186 return (object)(convert_value.ToSingle (nf_provider));
2187 else if (conversionType.Equals (typeof (String)))
2188 return (object)(convert_value.ToString (nf_provider));
2189 else if (conversionType.Equals (typeof (UInt16)))
2190 return (object)(convert_value.ToUInt16 (nf_provider));
2191 else if (conversionType.Equals (typeof (UInt32)))
2192 return (object)(convert_value.ToUInt32 (nf_provider));
2193 else if (conversionType.Equals (typeof (UInt64)))
2194 return (object)(convert_value.ToUInt64 (nf_provider));
2195 else if (conversionType.Equals (typeof (Object)))
2196 return (object)(value);
2206 // This is needed, because enumerations from assemblies
2207 // do not report their underlyingtype, but they report
2210 public static Type EnumToUnderlying (Type t)
2212 if (t == TypeManager.enum_type)
2215 t = t.UnderlyingSystemType;
2216 if (!TypeManager.IsEnumType (t))
2219 if (t is TypeBuilder) {
2220 // slow path needed to compile corlib
2221 if (t == TypeManager.bool_type ||
2222 t == TypeManager.byte_type ||
2223 t == TypeManager.sbyte_type ||
2224 t == TypeManager.char_type ||
2225 t == TypeManager.short_type ||
2226 t == TypeManager.ushort_type ||
2227 t == TypeManager.int32_type ||
2228 t == TypeManager.uint32_type ||
2229 t == TypeManager.int64_type ||
2230 t == TypeManager.uint64_type)
2233 TypeCode tc = Type.GetTypeCode (t);
2236 case TypeCode.Boolean:
2237 return TypeManager.bool_type;
2239 return TypeManager.byte_type;
2240 case TypeCode.SByte:
2241 return TypeManager.sbyte_type;
2243 return TypeManager.char_type;
2244 case TypeCode.Int16:
2245 return TypeManager.short_type;
2246 case TypeCode.UInt16:
2247 return TypeManager.ushort_type;
2248 case TypeCode.Int32:
2249 return TypeManager.int32_type;
2250 case TypeCode.UInt32:
2251 return TypeManager.uint32_type;
2252 case TypeCode.Int64:
2253 return TypeManager.int64_type;
2254 case TypeCode.UInt64:
2255 return TypeManager.uint64_type;
2257 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2261 // When compiling corlib and called with one of the core types, return
2262 // the corresponding typebuilder for that type.
2264 public static Type TypeToCoreType (Type t)
2266 if (RootContext.StdLib || (t is TypeBuilder))
2269 TypeCode tc = Type.GetTypeCode (t);
2272 case TypeCode.Boolean:
2273 return TypeManager.bool_type;
2275 return TypeManager.byte_type;
2276 case TypeCode.SByte:
2277 return TypeManager.sbyte_type;
2279 return TypeManager.char_type;
2280 case TypeCode.Int16:
2281 return TypeManager.short_type;
2282 case TypeCode.UInt16:
2283 return TypeManager.ushort_type;
2284 case TypeCode.Int32:
2285 return TypeManager.int32_type;
2286 case TypeCode.UInt32:
2287 return TypeManager.uint32_type;
2288 case TypeCode.Int64:
2289 return TypeManager.int64_type;
2290 case TypeCode.UInt64:
2291 return TypeManager.uint64_type;
2292 case TypeCode.Single:
2293 return TypeManager.float_type;
2294 case TypeCode.Double:
2295 return TypeManager.double_type;
2296 case TypeCode.String:
2297 return TypeManager.string_type;
2298 case TypeCode.Decimal:
2299 return TypeManager.decimal_type;
2301 if (t == typeof (void))
2302 return TypeManager.void_type;
2303 if (t == typeof (object))
2304 return TypeManager.object_type;
2305 if (t == typeof (System.Type))
2306 return TypeManager.type_type;
2307 if (t == typeof (System.IntPtr))
2308 return TypeManager.intptr_type;
2314 /// Utility function that can be used to probe whether a type
2315 /// is managed or not.
2317 public static bool VerifyUnManaged (Type t, Location loc)
2319 if (IsUnmanagedType (t))
2322 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2329 /// Returns the name of the indexer in a given type.
2332 /// The default is not always `Item'. The user can change this behaviour by
2333 /// using the IndexerNameAttribute in the container.
2335 /// For example, the String class indexer is named `Chars' not `Item'
2337 public static string IndexerPropertyName (Type t)
2339 t = DropGenericTypeArguments (t);
2340 if (t is TypeBuilder) {
2341 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2342 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2345 System.Attribute attr = System.Attribute.GetCustomAttribute (
2346 t, TypeManager.default_member_type);
2348 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2349 return dma.MemberName;
2352 return TypeContainer.DefaultIndexerName;
2355 static MethodInfo declare_local_method = null;
2357 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2359 if (declare_local_method == null){
2360 declare_local_method = typeof (ILGenerator).GetMethod (
2362 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2364 new Type [] { typeof (Type), typeof (bool)},
2366 if (declare_local_method == null){
2367 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2368 return ig.DeclareLocal (t);
2371 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2375 // Returns whether the array of memberinfos contains the given method
2377 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2379 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2381 foreach (MethodBase method in array) {
2382 if (method.Name != new_method.Name)
2385 if (method is MethodInfo && new_method is MethodInfo)
2386 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2390 Type [] old_args = TypeManager.GetParameterData (method).Types;
2391 int old_count = old_args.Length;
2394 if (new_args.Length != old_count)
2397 for (i = 0; i < old_count; i++){
2398 if (old_args [i] != new_args [i])
2411 // We copy methods from `new_members' into `target_list' if the signature
2412 // for the method from in the new list does not exist in the target_list
2414 // The name is assumed to be the same.
2416 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2418 if (target_list == null){
2419 target_list = new ArrayList ();
2421 foreach (MemberInfo mi in new_members){
2422 if (mi is MethodBase)
2423 target_list.Add (mi);
2428 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2429 target_list.CopyTo (target_array, 0);
2431 foreach (MemberInfo mi in new_members){
2432 MethodBase new_method = (MethodBase) mi;
2434 if (!ArrayContainsMethod (target_array, new_method))
2435 target_list.Add (new_method);
2440 // This method always return false for non-generic compiler,
2441 // while Type.IsGenericParameter is returned if it is supported.
2442 public static bool IsGenericParameter (Type type)
2444 return type.IsGenericParameter;
2447 public static int GenericParameterPosition (Type type)
2449 return type.GenericParameterPosition;
2452 #region MemberLookup implementation
2455 // Whether we allow private members in the result (since FindMembers
2456 // uses NonPublic for both protected and private), we need to distinguish.
2459 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2464 internal class Closure {
2465 internal bool private_ok;
2467 // Who is invoking us and which type is being queried currently.
2468 internal Type invocation_type;
2469 internal Type qualifier_type;
2471 // The assembly that defines the type is that is calling us
2472 internal Assembly invocation_assembly;
2473 internal IList almost_match;
2475 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2477 if (invocation_type == null)
2480 if (is_static && qualifier_type == null)
2481 // It resolved from a simple name, so it should be visible.
2484 // A nested class has access to all the protected members visible to its parent.
2485 if (qualifier_type != null && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2488 if (IsNestedFamilyAccessible (invocation_type, m.DeclaringType)) {
2489 // Although a derived class can access protected members of its base class
2490 // it cannot do so through an instance of the base class (CS1540).
2491 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2493 qualifier_type == null ||
2494 IsInstantiationOfSameGenericType (invocation_type, qualifier_type) ||
2495 !IsFamilyAccessible (invocation_type, qualifier_type) ||
2496 IsNestedChildOf (invocation_type, qualifier_type))
2500 if (almost_match != null)
2501 almost_match.Add (m);
2507 // This filter filters by name + whether it is ok to include private
2508 // members in the search
2510 internal bool Filter (MemberInfo m, object filter_criteria)
2513 // Hack: we know that the filter criteria will always be in the
2514 // `closure' // fields.
2517 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2520 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2521 (invocation_type != null) &&
2522 IsPrivateAccessible (m.DeclaringType, invocation_type))
2526 // Ugly: we need to find out the type of `m', and depending
2527 // on this, tell whether we accept or not
2529 if (m is MethodBase){
2530 MethodBase mb = (MethodBase) m;
2531 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2533 if (ma == MethodAttributes.Public)
2536 if (ma == MethodAttributes.Private)
2537 return private_ok ||
2538 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2539 IsNestedChildOf (invocation_type, m.DeclaringType);
2541 if (invocation_assembly == mb.DeclaringType.Assembly ||
2542 TypeManager.IsFriendAssembly (mb.DeclaringType.Assembly)) {
2543 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2546 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2550 // Family, FamORAssem or FamANDAssem
2551 return CheckValidFamilyAccess (mb.IsStatic, m);
2554 if (m is FieldInfo){
2555 FieldInfo fi = (FieldInfo) m;
2556 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2558 if (fa == FieldAttributes.Public)
2561 if (fa == FieldAttributes.Private)
2562 return private_ok ||
2563 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2564 IsNestedChildOf (invocation_type, m.DeclaringType);
2566 if (invocation_assembly == fi.DeclaringType.Assembly ||
2567 TypeManager.IsFriendAssembly (fi.DeclaringType.Assembly)) {
2568 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamORAssem)
2571 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamANDAssem)
2575 // Family, FamORAssem or FamANDAssem
2576 return CheckValidFamilyAccess (fi.IsStatic, m);
2580 // EventInfos and PropertyInfos, return true because they lack
2581 // permission information, so we need to check later on the methods.
2587 static Closure closure = new Closure ();
2588 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2591 // Looks up a member called `name' in the `queried_type'. This lookup
2592 // is done by code that is contained in the definition for `invocation_type'
2593 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2595 // `invocation_type' is used to check whether we're allowed to access the requested
2596 // member wrt its protection level.
2598 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2599 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2600 // is B and qualifier_type is A). This is used to do the CS1540 check.
2602 // When resolving a SimpleName, `qualifier_type' is null.
2604 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2605 // the same than `queried_type' - except when we're being called from BaseAccess;
2606 // in this case, `invocation_type' is the current type and `queried_type' the base
2607 // type, so this'd normally trigger a CS1540.
2609 // The binding flags are `bf' and the kind of members being looked up are `mt'
2611 // The return value always includes private members which code in `invocation_type'
2612 // is allowed to access (using the specified `qualifier_type' if given); only use
2613 // BindingFlags.NonPublic to bypass the permission check.
2615 // The 'almost_match' argument is used for reporting error CS1540.
2617 // Returns an array of a single element for everything but Methods/Constructors
2618 // that might return multiple matches.
2620 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2621 Type queried_type, MemberTypes mt,
2622 BindingFlags original_bf, string name, IList almost_match)
2624 Timer.StartTimer (TimerType.MemberLookup);
2626 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2627 queried_type, mt, original_bf, name, almost_match);
2629 Timer.StopTimer (TimerType.MemberLookup);
2634 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2635 Type queried_type, MemberTypes mt,
2636 BindingFlags original_bf, string name, IList almost_match)
2638 BindingFlags bf = original_bf;
2640 ArrayList method_list = null;
2641 Type current_type = queried_type;
2642 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2643 bool skip_iface_check = true, used_cache = false;
2644 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
2646 closure.invocation_type = invocation_type;
2647 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2648 closure.qualifier_type = qualifier_type;
2649 closure.almost_match = almost_match;
2651 // This is from the first time we find a method
2652 // in most cases, we do not actually find a method in the base class
2653 // so we can just ignore it, and save the arraylist allocation
2654 MemberInfo [] first_members_list = null;
2655 bool use_first_members_list = false;
2661 // `NonPublic' is lame, because it includes both protected and
2662 // private methods, so we need to control this behavior by
2663 // explicitly tracking if a private method is ok or not.
2665 // The possible cases are:
2666 // public, private and protected (internal does not come into the
2669 if ((invocation_type != null) &&
2670 ((invocation_type == current_type) ||
2671 IsNestedChildOf (invocation_type, current_type)) ||
2673 bf = original_bf | BindingFlags.NonPublic;
2677 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2679 Timer.StopTimer (TimerType.MemberLookup);
2681 list = MemberLookup_FindMembers (
2682 current_type, mt, bf, name, out used_cache);
2684 Timer.StartTimer (TimerType.MemberLookup);
2687 // When queried for an interface type, the cache will automatically check all
2688 // inherited members, so we don't need to do this here. However, this only
2689 // works if we already used the cache in the first iteration of this loop.
2691 // If we used the cache in any further iteration, we can still terminate the
2692 // loop since the cache always looks in all base classes.
2698 skip_iface_check = false;
2700 if (current_type == TypeManager.object_type)
2703 current_type = current_type.BaseType;
2706 // This happens with interfaces, they have a null
2707 // basetype. Look members up in the Object class.
2709 if (current_type == null) {
2710 current_type = TypeManager.object_type;
2715 if (list.Length == 0)
2719 // Events and types are returned by both `static' and `instance'
2720 // searches, which means that our above FindMembers will
2721 // return two copies of the same.
2723 if (list.Length == 1 && !(list [0] is MethodBase)){
2728 // Multiple properties: we query those just to find out the indexer
2731 if (list [0] is PropertyInfo)
2735 // We found an event: the cache lookup returns both the event and
2736 // its private field.
2738 if (list [0] is EventInfo) {
2739 if ((list.Length == 2) && (list [1] is FieldInfo))
2740 return new MemberInfo [] { list [0] };
2747 // We found methods, turn the search into "method scan"
2751 if (first_members_list != null) {
2752 if (use_first_members_list) {
2753 method_list = CopyNewMethods (method_list, first_members_list);
2754 use_first_members_list = false;
2757 method_list = CopyNewMethods (method_list, list);
2759 first_members_list = list;
2760 use_first_members_list = true;
2762 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2764 } while (searching);
2766 if (use_first_members_list) {
2767 foreach (MemberInfo mi in first_members_list) {
2768 if (! (mi is MethodBase)) {
2769 method_list = CopyNewMethods (method_list, first_members_list);
2770 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2773 return (MemberInfo []) first_members_list;
2776 if (method_list != null && method_list.Count > 0) {
2777 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2780 // This happens if we already used the cache in the first iteration, in this case
2781 // the cache already looked in all interfaces.
2783 if (skip_iface_check)
2787 // Interfaces do not list members they inherit, so we have to
2790 if (!queried_type.IsInterface)
2793 if (queried_type.IsArray)
2794 queried_type = TypeManager.array_type;
2796 Type [] ifaces = GetInterfaces (queried_type);
2800 foreach (Type itype in ifaces){
2803 x = MemberLookup (null, null, itype, mt, bf, name, null);
2811 // Tests whether external method is really special
2812 public static bool IsSpecialMethod (MethodBase mb)
2814 string name = mb.Name;
2815 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2816 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2818 if (name.StartsWith ("add_"))
2819 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2821 if (name.StartsWith ("remove_"))
2822 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2824 if (name.StartsWith ("op_")){
2825 foreach (string oname in Unary.oper_names) {
2830 foreach (string oname in Binary.oper_names) {
2843 /// There is exactly one instance of this class per type.
2845 public sealed class TypeHandle : IMemberContainer {
2846 public readonly IMemberContainer BaseType;
2848 readonly int id = ++next_id;
2849 static int next_id = 0;
2851 static TypeHandle ()
2857 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2858 /// a TypeHandle yet, a new instance of it is created. This static method
2859 /// ensures that we'll only have one TypeHandle instance per type.
2861 private static TypeHandle GetTypeHandle (Type t)
2863 TypeHandle handle = (TypeHandle) type_hash [t];
2867 handle = new TypeHandle (t);
2868 type_hash.Add (t, handle);
2872 public static MemberCache GetMemberCache (Type t)
2874 return GetTypeHandle (t).MemberCache;
2877 public static void CleanUp ()
2882 public static void Reset ()
2884 type_hash = new PtrHashtable ();
2888 /// Returns the TypeHandle for TypeManager.object_type.
2890 public static IMemberContainer ObjectType {
2892 if (object_type != null)
2895 object_type = GetTypeHandle (TypeManager.object_type);
2902 /// Returns the TypeHandle for TypeManager.array_type.
2904 public static IMemberContainer ArrayType {
2906 if (array_type != null)
2909 array_type = GetTypeHandle (TypeManager.array_type);
2915 private static PtrHashtable type_hash;
2917 private static TypeHandle object_type = null;
2918 private static TypeHandle array_type = null;
2921 private string full_name;
2922 private bool is_interface;
2923 private MemberCache member_cache;
2924 private MemberCache base_cache;
2926 private TypeHandle (Type type)
2929 full_name = type.FullName != null ? type.FullName : type.Name;
2930 if (type.BaseType != null) {
2931 base_cache = TypeManager.LookupMemberCache (type.BaseType);
2932 BaseType = base_cache.Container;
2933 } else if (type.IsInterface)
2934 base_cache = TypeManager.LookupBaseInterfacesCache (type);
2935 this.is_interface = type.IsInterface || type.IsGenericParameter;
2936 this.member_cache = new MemberCache (this);
2939 // IMemberContainer methods
2941 public string Name {
2953 public MemberCache BaseCache {
2959 public bool IsInterface {
2961 return is_interface;
2965 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2967 MemberInfo [] members;
2968 if (type is GenericTypeParameterBuilder)
2969 return MemberList.Empty;
2970 if (mt == MemberTypes.Event)
2971 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2973 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2975 Array.Reverse (members);
2977 return new MemberList (members);
2980 // IMemberFinder methods
2982 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2983 MemberFilter filter, object criteria)
2985 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
2988 public MemberCache MemberCache {
2990 return member_cache;
2994 public override string ToString ()
2996 if (BaseType != null)
2997 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2999 return "TypeHandle (" + id + "," + Name + ")";