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 // Dual licensed under the terms of the MIT X11 or GNU GPL
10 // Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
11 // Copyright 2003-2008 Novell, Inc.
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.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
38 // A list of core types that the compiler requires or uses
40 static public Type object_type;
41 static public Type value_type;
42 static public Type string_type;
43 static public Type int32_type;
44 static public Type uint32_type;
45 static public Type int64_type;
46 static public Type uint64_type;
47 static public Type float_type;
48 static public Type double_type;
49 static public Type char_type;
50 static public Type char_ptr_type;
51 static public Type short_type;
52 static public Type decimal_type;
53 static public Type bool_type;
54 static public Type sbyte_type;
55 static public Type byte_type;
56 static public Type ushort_type;
57 static public Type enum_type;
58 static public Type delegate_type;
59 static public Type multicast_delegate_type;
60 static public Type void_type;
61 static public Type null_type;
62 static public Type array_type;
63 static public Type runtime_handle_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 default_member_type;
69 static public Type iasyncresult_type;
70 static public Type asynccallback_type;
71 static public Type intptr_type;
72 static public Type uintptr_type;
73 static public Type runtime_field_handle_type;
74 static public Type runtime_argument_handle_type;
75 static public Type attribute_type;
76 static public Type attribute_usage_type;
77 static public Type decimal_constant_attribute_type;
78 static public Type dllimport_type;
79 static public Type methodimpl_attr_type;
81 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 obsolete_attribute_type;
88 static public Type conditional_attribute_type;
89 static public Type in_attribute_type;
90 static public Type out_attribute_type;
91 static public Type extension_attribute_type;
92 static public Type default_parameter_value_attribute_type;
94 static public Type anonymous_method_type;
95 static public Type cls_compliant_attribute_type;
96 static public Type typed_reference_type;
97 static public Type arg_iterator_type;
98 static public Type mbr_type;
99 static public Type struct_layout_attribute_type;
100 static public Type field_offset_attribute_type;
101 static public Type security_attr_type;
102 static public Type required_attr_type;
103 static public Type guid_attr_type;
104 static public Type assembly_culture_attribute_type;
105 static public Type assembly_version_attribute_type;
106 static public Type coclass_attr_type;
107 static public Type comimport_attr_type;
108 public static Type runtime_helpers_type;
109 public static Type internals_visible_attr_type;
114 static internal Type fixed_buffer_attr_type;
115 static internal Type default_charset_type;
116 static internal Type type_forwarder_attr_type;
117 static internal Type isvolatile_type;
118 static public Type generic_ilist_type;
119 static public Type generic_icollection_type;
120 static public Type generic_ienumerator_type;
121 static public Type generic_ienumerable_type;
122 static public Type generic_nullable_type;
127 static internal Type expression_type;
128 public static Type parameter_expression_type;
131 // Expressions representing the internal types. Used during declaration
134 static public TypeExpr system_object_expr, system_string_expr;
135 static public TypeExpr system_boolean_expr, system_decimal_expr;
136 static public TypeExpr system_single_expr, system_double_expr;
137 static public TypeExpr system_sbyte_expr, system_byte_expr;
138 static public TypeExpr system_int16_expr, system_uint16_expr;
139 static public TypeExpr system_int32_expr, system_uint32_expr;
140 static public TypeExpr system_int64_expr, system_uint64_expr;
141 static public TypeExpr system_char_expr, system_void_expr;
142 static public TypeExpr system_valuetype_expr;
143 static public TypeExpr system_intptr_expr;
144 public static TypeExpr expression_type_expr;
148 // These methods are called by code generated by the compiler
150 static public FieldInfo string_empty;
151 static public MethodInfo system_type_get_type_from_handle;
152 static public MethodInfo bool_movenext_void;
153 static public MethodInfo void_dispose_void;
154 static public MethodInfo void_monitor_enter_object;
155 static public MethodInfo void_monitor_exit_object;
156 static public MethodInfo void_initializearray_array_fieldhandle;
157 static public MethodInfo delegate_combine_delegate_delegate;
158 static public MethodInfo delegate_remove_delegate_delegate;
159 static public MethodInfo int_get_offset_to_string_data;
160 static public MethodInfo int_interlocked_compare_exchange;
161 static public PropertyInfo ienumerator_getcurrent;
162 public static MethodInfo methodbase_get_type_from_handle;
163 public static MethodInfo methodbase_get_type_from_handle_generic;
164 public static MethodInfo fieldinfo_get_field_from_handle;
165 static public MethodInfo activator_create_instance;
168 // The attribute constructors.
170 static public ConstructorInfo void_decimal_ctor_five_args;
171 static public ConstructorInfo void_decimal_ctor_int_arg;
172 static public ConstructorInfo default_member_ctor;
173 static public ConstructorInfo decimal_constant_attribute_ctor;
174 static internal ConstructorInfo struct_layout_attribute_ctor;
175 static public ConstructorInfo field_offset_attribute_ctor;
176 public static ConstructorInfo invalid_operation_exception_ctor;
178 static public CustomAttributeBuilder param_array_attr;
179 static CustomAttributeBuilder compiler_generated_attr;
180 static CustomAttributeBuilder debugger_hidden_attr;
183 static internal ConstructorInfo fixed_buffer_attr_ctor;
184 static internal CustomAttributeBuilder unsafe_value_type_attr;
187 static internal CustomAttributeBuilder extension_attribute_attr;
189 static PtrHashtable builder_to_declspace;
191 static PtrHashtable builder_to_member_cache;
194 // Tracks the interfaces implemented by typebuilders. We only
195 // enter those who do implement or or more interfaces
197 static PtrHashtable builder_to_ifaces;
200 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
202 static Hashtable method_params;
205 // A hash table from override methods to their base virtual method.
207 static Hashtable method_overrides;
210 // Keeps track of methods
213 static Hashtable builder_to_method;
216 // Contains all public types from referenced assemblies.
217 // This member is used only if CLS Compliance verification is required.
219 public static Hashtable AllClsTopLevelTypes;
221 static Hashtable fieldbuilders_to_fields;
222 static Hashtable propertybuilder_to_property;
223 static Hashtable fields;
224 static Hashtable events;
225 static PtrHashtable assembly_internals_vis_attrs;
227 public static void CleanUp ()
229 // Lets get everything clean so that we can collect before generating code
230 builder_to_declspace = null;
231 builder_to_member_cache = null;
232 builder_to_ifaces = null;
233 builder_to_type_param = null;
234 method_params = null;
235 builder_to_method = null;
240 propertybuilder_to_property = null;
241 assembly_internals_vis_attrs = null;
243 TypeHandle.CleanUp ();
247 // These are expressions that represent some of the internal data types, used
250 static void InitExpressionTypes ()
252 system_object_expr = new TypeLookupExpression ("System", "Object");
253 system_string_expr = new TypeLookupExpression ("System", "String");
254 system_boolean_expr = new TypeLookupExpression ("System", "Boolean");
255 system_decimal_expr = new TypeLookupExpression ("System", "Decimal");
256 system_single_expr = new TypeLookupExpression ("System", "Single");
257 system_double_expr = new TypeLookupExpression ("System", "Double");
258 system_sbyte_expr = new TypeLookupExpression ("System", "SByte");
259 system_byte_expr = new TypeLookupExpression ("System", "Byte");
260 system_int16_expr = new TypeLookupExpression ("System", "Int16");
261 system_uint16_expr = new TypeLookupExpression ("System", "UInt16");
262 system_int32_expr = new TypeLookupExpression ("System", "Int32");
263 system_uint32_expr = new TypeLookupExpression ("System", "UInt32");
264 system_int64_expr = new TypeLookupExpression ("System", "Int64");
265 system_uint64_expr = new TypeLookupExpression ("System", "UInt64");
266 system_char_expr = new TypeLookupExpression ("System", "Char");
267 system_void_expr = new TypeLookupExpression ("System", "Void");
268 system_valuetype_expr = new TypeLookupExpression ("System", "ValueType");
269 system_intptr_expr = new TypeLookupExpression ("System", "IntPtr");
272 static TypeManager ()
276 InitExpressionTypes ();
279 static public void Reset ()
281 builder_to_declspace = new PtrHashtable ();
282 builder_to_member_cache = new PtrHashtable ();
283 builder_to_method = new PtrHashtable ();
284 builder_to_type_param = new PtrHashtable ();
285 method_params = new PtrHashtable ();
286 method_overrides = new PtrHashtable ();
287 builder_to_ifaces = new PtrHashtable ();
289 fieldbuilders_to_fields = new Hashtable ();
290 propertybuilder_to_property = new Hashtable ();
291 fields = new Hashtable ();
292 type_hash = new DoubleHash ();
293 assembly_internals_vis_attrs = new PtrHashtable ();
295 // TODO: I am really bored by all this static stuff
296 system_type_get_type_from_handle =
299 void_monitor_enter_object =
300 void_monitor_exit_object =
301 void_initializearray_array_fieldhandle =
302 delegate_combine_delegate_delegate =
303 delegate_remove_delegate_delegate =
304 int_get_offset_to_string_data =
305 int_interlocked_compare_exchange =
306 methodbase_get_type_from_handle =
307 methodbase_get_type_from_handle_generic =
308 fieldinfo_get_field_from_handle =
309 activator_create_instance = null;
311 ienumerator_getcurrent = null;
313 void_decimal_ctor_five_args =
314 void_decimal_ctor_int_arg =
315 default_member_ctor =
316 decimal_constant_attribute_ctor =
317 struct_layout_attribute_ctor =
318 field_offset_attribute_ctor =
319 invalid_operation_exception_ctor =
320 fixed_buffer_attr_ctor = null;
323 compiler_generated_attr =
324 unsafe_value_type_attr =
325 extension_attribute_attr = null;
327 isvolatile_type = null;
329 // to uncover regressions
330 AllClsTopLevelTypes = null;
333 public static void AddUserType (DeclSpace ds)
335 builder_to_declspace.Add (ds.TypeBuilder, ds);
339 // This entry point is used by types that we define under the covers
341 public static void RegisterBuilder (Type tb, Type [] ifaces)
344 builder_to_ifaces [tb] = ifaces;
347 public static void AddMethod (MethodBase builder, IMethodData method)
349 builder_to_method.Add (builder, method);
350 method_params.Add (builder, method.ParameterInfo);
353 public static IMethodData GetMethod (MethodBase builder)
355 return (IMethodData) builder_to_method [builder];
359 /// Returns the DeclSpace whose Type is `t' or null if there is no
360 /// DeclSpace for `t' (ie, the Type comes from a library)
362 public static DeclSpace LookupDeclSpace (Type t)
364 return builder_to_declspace [t] as DeclSpace;
368 /// Returns the TypeContainer whose Type is `t' or null if there is no
369 /// TypeContainer for `t' (ie, the Type comes from a library)
371 public static TypeContainer LookupTypeContainer (Type t)
373 return builder_to_declspace [t] as TypeContainer;
376 public static MemberCache LookupMemberCache (Type t)
378 if (t.Module == CodeGen.Module.Builder) {
379 DeclSpace container = (DeclSpace)builder_to_declspace [t];
380 if (container != null)
381 return container.MemberCache;
385 if (t is GenericTypeParameterBuilder) {
386 TypeParameter container = builder_to_type_param [t] as TypeParameter;
388 if (container != null)
389 return container.MemberCache;
393 return TypeHandle.GetMemberCache (t);
396 public static MemberCache LookupBaseInterfacesCache (Type t)
398 Type [] ifaces = GetInterfaces (t);
400 if (ifaces != null && ifaces.Length == 1)
401 return LookupMemberCache (ifaces [0]);
403 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
404 MemberCache cache = builder_to_member_cache [t] as MemberCache;
408 cache = new MemberCache (ifaces);
409 builder_to_member_cache.Add (t, cache);
413 public static TypeContainer LookupInterface (Type t)
415 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
416 if ((tc == null) || (tc.Kind != Kind.Interface))
422 public static Delegate LookupDelegate (Type t)
424 return builder_to_declspace [t] as Delegate;
427 public static Class LookupClass (Type t)
429 return (Class) builder_to_declspace [t];
433 // We use this hash for multiple kinds of constructed types:
435 // (T, "&") Given T, get T &
436 // (T, "*") Given T, get T *
437 // (T, "[]") Given T and a array dimension, get T []
438 // (T, X) Given a type T and a simple name X, get the type T+X
440 // Accessibility tests, if necessary, should be done by the user
442 static DoubleHash type_hash = new DoubleHash ();
445 // Gets the reference to T version of the Type (T&)
447 public static Type GetReferenceType (Type t)
450 return t.MakeByRefType ();
452 return GetConstructedType (t, "&");
457 // Gets the pointer to T version of the Type (T*)
459 public static Type GetPointerType (Type t)
461 return GetConstructedType (t, "*");
464 public static Type GetConstructedType (Type t, string dim)
467 if (type_hash.Lookup (t, dim, out ret))
470 ret = t.Module.GetType (t.ToString () + dim);
472 type_hash.Insert (t, dim, ret);
477 ret = GetReferenceType (t);
478 type_hash.Insert (t, dim, ret);
483 if (t.IsGenericParameter || t.IsGenericType) {
486 while ((pos < dim.Length) && (dim [pos] == '[')) {
489 if (dim [pos] == ']') {
490 result = result.MakeArrayType ();
493 if (pos < dim.Length)
496 type_hash.Insert (t, dim, result);
501 while (dim [pos] == ',') {
505 if ((dim [pos] != ']') || (pos != dim.Length-1))
508 result = result.MakeArrayType (rank + 1);
509 type_hash.Insert (t, dim, result);
515 type_hash.Insert (t, dim, null);
519 public static CustomAttributeBuilder GetCompilerGeneratedAttribute (Location loc)
521 if (compiler_generated_attr != null)
522 return compiler_generated_attr;
524 Type t = TypeManager.CoreLookupType (
525 "System.Runtime.CompilerServices", "CompilerGeneratedAttribute", Kind.Class, true);
527 // TODO: it cannot be null
531 compiler_generated_attr = new CustomAttributeBuilder (
532 GetPredefinedConstructor (t, loc, Type.EmptyTypes), new object[0]);
534 return compiler_generated_attr;
537 public static CustomAttributeBuilder GetDebuggerHiddenAttribute (Location loc)
539 if (debugger_hidden_attr != null)
540 return debugger_hidden_attr;
542 Type t = TypeManager.CoreLookupType (
543 "System.Diagnostics", "DebuggerHiddenAttribute", Kind.Class, true);
545 // TODO: it cannot be null
549 debugger_hidden_attr = new CustomAttributeBuilder (
550 GetPredefinedConstructor (t, loc, Type.EmptyTypes), new object[0]);
552 return debugger_hidden_attr;
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)
597 if (t == typeof (ArglistParameter))
600 if (t == typeof (AnonymousMethodBody))
601 return "anonymous method";
604 return "internal error";
606 return CSharpName (GetFullName (t), t);
609 static readonly char [] elements = new char [] { '*', '[' };
611 public static string CSharpName (string name, Type type)
613 if (name.Length > 10) {
616 case "System.Int32": s = "int"; break;
617 case "System.Int64": s = "long"; break;
618 case "System.String": s = "string"; break;
619 case "System.Boolean": s = "bool"; break;
620 case "System.Void": s = "void"; break;
621 case "System.Object": s = "object"; break;
622 case "System.UInt32": s = "uint"; break;
623 case "System.Int16": s = "short"; break;
624 case "System.UInt16": s = "ushort"; break;
625 case "System.UInt64": s = "ulong"; break;
626 case "System.Single": s = "float"; break;
627 case "System.Double": s = "double"; break;
628 case "System.Decimal": s = "decimal"; break;
629 case "System.Char": s = "char"; break;
630 case "System.Byte": s = "byte"; break;
631 case "System.SByte": s = "sbyte"; break;
632 default: s = null; break;
637 // Predefined names can come from mscorlib only
639 if (type == null || type.Module.Name == "mscorlib.dll" || !RootContext.StdLib)
645 if (name [0] == AnonymousTypeClass.ClassNamePrefix [0] && name.StartsWith (AnonymousTypeClass.ClassNamePrefix))
646 return AnonymousTypeClass.SignatureForError;
648 int idx = name.IndexOfAny (elements, 10);
650 return CSharpName (name.Substring (0, idx), type) + name.Substring (idx);
653 return name.Replace ('+', '.');
656 static public string CSharpName (Type[] types)
658 if (types.Length == 0)
661 StringBuilder sb = new StringBuilder ();
662 for (int i = 0; i < types.Length; ++i) {
666 sb.Append (CSharpName (types [i]));
668 return sb.ToString ();
672 /// Returns the signature of the method with full namespace classification
674 static public string GetFullNameSignature (MemberInfo mi)
676 PropertyInfo pi = mi as PropertyInfo;
678 MethodBase pmi = pi.GetGetMethod (true);
680 pmi = pi.GetSetMethod (true);
681 if (GetParameterData (pmi).Count > 0)
684 return (mi is MethodBase)
685 ? CSharpSignature (mi as MethodBase)
686 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
690 private static int GetFullName (Type t, StringBuilder sb)
694 if (!t.IsGenericType) {
695 sb.Append (t.FullName);
699 if (t.DeclaringType != null) {
700 pos = GetFullName (t.DeclaringType, sb);
702 } else if (t.Namespace != null && t.Namespace.Length != 0) {
703 sb.Append (t.Namespace);
706 sb.Append (RemoveGenericArity (t.Name));
708 Type[] this_args = GetTypeArguments (t);
710 if (this_args.Length < pos)
711 throw new InternalErrorException (
712 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
713 if (this_args.Length == pos)
718 sb.Append (CSharpName (this_args [pos++]));
719 if (pos == this_args.Length)
727 static string GetFullName (Type t)
730 string dimension = t.Name.Substring (t.Name.LastIndexOf ('['));
731 return GetFullName (GetElementType (t)) + dimension;
734 if (IsNullableType (t) && !t.IsGenericTypeDefinition) {
735 t = GetTypeArguments (t)[0];
736 return CSharpName (t) + "?";
739 if (t.IsGenericParameter)
741 if (!t.IsGenericType)
744 StringBuilder sb = new StringBuilder ();
745 int pos = GetFullName (t, sb);
747 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
748 return sb.ToString ();
751 public static string GetFullName (Type t)
757 public static string RemoveGenericArity (string from)
759 int i = from.IndexOf ('`');
761 return from.Substring (0, i);
766 /// When we need to report accessors as well
768 static public string CSharpSignature (MethodBase mb)
770 return CSharpSignature (mb, false);
774 /// Returns the signature of the method
776 static public string CSharpSignature (MethodBase mb, bool show_accessor)
778 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
781 AParametersCollection iparams = GetParameterData (mb);
782 string parameters = iparams.GetSignatureForError ();
783 int accessor_end = 0;
785 if (!mb.IsConstructor && TypeManager.IsSpecialMethod (mb)) {
786 string op_name = Operator.GetName (mb.Name);
787 if (op_name != null) {
788 if (op_name == "explicit" || op_name == "implicit") {
789 sig.Append (op_name);
790 sig.Append (" operator ");
791 sig.Append (CSharpName (((MethodInfo)mb).ReturnType));
793 sig.Append ("operator ");
794 sig.Append (op_name);
796 sig.Append (parameters);
797 return sig.ToString ();
800 bool is_getter = mb.Name.StartsWith ("get_");
801 bool is_setter = mb.Name.StartsWith ("set_");
802 if (is_getter || is_setter || mb.Name.StartsWith ("add_")) {
804 } else if (mb.Name.StartsWith ("remove_")) {
809 if (iparams.Count > (is_getter ? 0 : 1)) {
810 sig.Append ("this[");
812 sig.Append (parameters.Substring (1, parameters.Length - 2));
814 sig.Append (parameters.Substring (1, parameters.LastIndexOf (',') - 1));
817 sig.Append (mb.Name.Substring (accessor_end + 1));
820 if (mb.Name == ".ctor")
821 sig.Append (RemoveGenericArity (mb.DeclaringType.Name));
823 sig.Append (mb.Name);
826 if (TypeManager.IsGenericMethod (mb)) {
827 Type[] args = mb.GetGenericArguments ();
829 for (int i = 0; i < args.Length; i++) {
832 sig.Append (CSharpName (args [i]));
839 sig.Append (parameters);
842 if (show_accessor && accessor_end > 0) {
844 sig.Append (mb.Name.Substring (0, accessor_end));
847 return sig.ToString ();
850 public static string GetMethodName (MethodInfo m)
853 if (!IsGenericMethodDefinition (m) && !IsGenericMethod (m))
856 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
862 static public string CSharpSignature (EventInfo ei)
864 return CSharpName (ei.DeclaringType) + "." + ei.Name;
868 // Looks up a type, and aborts if it is not found. This is used
869 // by predefined types required by the compiler
871 public static Type CoreLookupType (string ns_name, string name, Kind type_kind, bool required)
873 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
874 Expression expr = ns.Lookup (RootContext.ToplevelTypes, name, Location.Null);
878 Report.Error (518, "The predefined type `{0}.{1}' is not defined or imported",
885 if (RootContext.StdLib || t == null || !required)
888 // TODO: All predefined imported types have to have correct signature
889 if (t.Module != CodeGen.Module.Builder)
892 DeclSpace ds = (DeclSpace)RootContext.ToplevelTypes.GetDefinition (t.FullName);
893 if (ds is Delegate) {
894 if (type_kind == Kind.Delegate)
897 TypeContainer tc = (TypeContainer)ds;
898 if (tc.Kind == type_kind)
902 Report.Error (520, ds.Location, "The predefined type `{0}.{1}' is not declared correctly",
907 static MemberInfo GetPredefinedMember (Type t, string name, MemberTypes mt, Location loc, params Type [] args)
909 const BindingFlags flags = instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly;
911 MemberInfo [] members = MemberLookup (null, null, t, mt, flags, name, null);
912 if (members != null) {
913 for (int i = 0; i < members.Length; ++i) {
914 MemberInfo member = members [i];
915 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor) {
916 MethodBase mb = member as MethodBase;
920 AParametersCollection pd = TypeManager.GetParameterData (mb);
921 if (IsEqual (pd.Types, args))
924 if (mt == MemberTypes.Field) {
925 FieldInfo fi = member as FieldInfo;
929 if (args.Length >= 1 && !IsEqual (TypeToCoreType (fi.FieldType), args [0]))
935 if (mt == MemberTypes.Property) {
936 PropertyInfo pi = member as PropertyInfo;
940 if (args.Length >= 1 && !IsEqual (TypeToCoreType (pi.PropertyType), args [0]))
948 string method_args = null;
949 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor)
950 method_args = "(" + TypeManager.CSharpName (args) + ")";
952 Report.Error (656, loc, "The compiler required member `{0}.{1}{2}' could not be found or is inaccessible",
953 TypeManager.CSharpName (t), name, method_args);
959 // Returns the ConstructorInfo for "args"
961 public static ConstructorInfo GetPredefinedConstructor (Type t, Location loc, params Type [] args)
963 return (ConstructorInfo) GetPredefinedMember (t, ConstructorInfo.ConstructorName, MemberTypes.Constructor, loc, args);
967 // Returns the MethodInfo for a method named `name' defined
968 // in type `t' which takes arguments of types `args'
970 public static MethodInfo GetPredefinedMethod (Type t, string name, Location loc, params Type [] args)
972 return (MethodInfo)GetPredefinedMember (t, name, MemberTypes.Method, loc, args);
975 public static FieldInfo GetPredefinedField (Type t, string name, Location loc, params Type [] args)
977 return (FieldInfo) GetPredefinedMember (t, name, MemberTypes.Field, loc, args);
980 public static PropertyInfo GetPredefinedProperty (Type t, string name, Location loc, params Type [] args)
982 return (PropertyInfo) GetPredefinedMember (t, name, MemberTypes.Property, loc, args);
986 /// The types have to be initialized after the initial
987 /// population of the type has happened (for example, to
988 /// bootstrap the corlib.dll
990 public static bool InitCoreTypes ()
992 object_type = CoreLookupType ("System", "Object", Kind.Class, true);
993 system_object_expr.Type = object_type;
994 value_type = CoreLookupType ("System", "ValueType", Kind.Class, true);
995 system_valuetype_expr.Type = value_type;
996 attribute_type = CoreLookupType ("System", "Attribute", Kind.Class, true);
998 int32_type = CoreLookupType ("System", "Int32", Kind.Struct, true);
999 system_int32_expr.Type = int32_type;
1000 int64_type = CoreLookupType ("System", "Int64", Kind.Struct, true);
1001 system_int64_expr.Type = int64_type;
1002 uint32_type = CoreLookupType ("System", "UInt32", Kind.Struct, true);
1003 system_uint32_expr.Type = uint32_type;
1004 uint64_type = CoreLookupType ("System", "UInt64", Kind.Struct, true);
1005 system_uint64_expr.Type = uint64_type;
1006 byte_type = CoreLookupType ("System", "Byte", Kind.Struct, true);
1007 system_byte_expr.Type = byte_type;
1008 sbyte_type = CoreLookupType ("System", "SByte", Kind.Struct, true);
1009 system_sbyte_expr.Type = sbyte_type;
1010 short_type = CoreLookupType ("System", "Int16", Kind.Struct, true);
1011 system_int16_expr.Type = short_type;
1012 ushort_type = CoreLookupType ("System", "UInt16", Kind.Struct, true);
1013 system_uint16_expr.Type = ushort_type;
1015 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator", Kind.Interface, true);
1016 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable", Kind.Interface, true);
1017 idisposable_type = CoreLookupType ("System", "IDisposable", Kind.Interface, true);
1019 // HACK: DefineType immediately resolves iterators (very wrong)
1020 generic_ienumerator_type = CoreLookupType ("System.Collections.Generic", "IEnumerator`1", Kind.Interface, false);
1022 char_type = CoreLookupType ("System", "Char", Kind.Struct, true);
1023 system_char_expr.Type = char_type;
1024 string_type = CoreLookupType ("System", "String", Kind.Class, true);
1025 system_string_expr.Type = string_type;
1026 float_type = CoreLookupType ("System", "Single", Kind.Struct, true);
1027 system_single_expr.Type = float_type;
1028 double_type = CoreLookupType ("System", "Double", Kind.Struct, true);
1029 system_double_expr.Type = double_type;
1030 decimal_type = CoreLookupType ("System", "Decimal", Kind.Struct, true);
1031 system_decimal_expr.Type = decimal_type;
1032 bool_type = CoreLookupType ("System", "Boolean", Kind.Struct, true);
1033 system_boolean_expr.Type = bool_type;
1034 intptr_type = CoreLookupType ("System", "IntPtr", Kind.Struct, true);
1035 system_intptr_expr.Type = intptr_type;
1036 uintptr_type = CoreLookupType ("System", "UIntPtr", Kind.Struct, true);
1038 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate", Kind.Class, true);
1039 delegate_type = CoreLookupType ("System", "Delegate", Kind.Class, true);
1041 enum_type = CoreLookupType ("System", "Enum", Kind.Class, true);
1042 array_type = CoreLookupType ("System", "Array", Kind.Class, true);
1043 void_type = CoreLookupType ("System", "Void", Kind.Struct, true);
1044 system_void_expr.Type = void_type;
1045 type_type = CoreLookupType ("System", "Type", Kind.Class, true);
1046 exception_type = CoreLookupType ("System", "Exception", Kind.Class, true);
1048 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle", Kind.Struct, true);
1049 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle", Kind.Struct, true);
1051 param_array_type = CoreLookupType ("System", "ParamArrayAttribute", Kind.Class, true);
1052 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute", Kind.Class, true);
1054 return Report.Errors == 0;
1058 // Initializes optional core types
1060 public static void InitOptionalCoreTypes ()
1063 // These are only used for compare purposes
1065 anonymous_method_type = typeof (AnonymousMethodBody);
1066 null_type = typeof (NullLiteral);
1068 void_ptr_type = GetPointerType (void_type);
1069 char_ptr_type = GetPointerType (char_type);
1072 // Initialize InternalsVisibleTo as the very first optional type. Otherwise we would populate
1073 // types cache with incorrect accessiblity when any of optional types is internal.
1075 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute", Kind.Class, false);
1077 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle", Kind.Struct, false);
1078 asynccallback_type = CoreLookupType ("System", "AsyncCallback", Kind.Delegate, false);
1079 iasyncresult_type = CoreLookupType ("System", "IAsyncResult", Kind.Interface, false);
1080 typed_reference_type = CoreLookupType ("System", "TypedReference", Kind.Struct, false);
1081 arg_iterator_type = CoreLookupType ("System", "ArgIterator", Kind.Struct, false);
1082 mbr_type = CoreLookupType ("System", "MarshalByRefObject", Kind.Class, false);
1085 // Optional attributes, used for error reporting only
1087 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute", Kind.Class, false);
1088 if (obsolete_attribute_type != null) {
1089 Class c = TypeManager.LookupClass (obsolete_attribute_type);
1094 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute", Kind.Class, false);
1095 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute", Kind.Class, false);
1097 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute", Kind.Class, false);
1099 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute", Kind.Class, false);
1100 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute", Kind.Class, false);
1101 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute", Kind.Class, false);
1102 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute", Kind.Class, false);
1103 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute", Kind.Class, false);
1104 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute", Kind.Class, false);
1105 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute", Kind.Class, false);
1106 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute", Kind.Class, false);
1107 assembly_version_attribute_type = CoreLookupType ("System.Reflection", "AssemblyVersionAttribute", Kind.Class, false);
1108 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute", Kind.Class, false);
1109 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute", Kind.Class, false);
1110 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute", Kind.Class, false);
1111 default_parameter_value_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultParameterValueAttribute", Kind.Class, false);
1114 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute", Kind.Class, false);
1115 type_forwarder_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "TypeForwardedToAttribute", Kind.Class, false);
1116 generic_ilist_type = CoreLookupType ("System.Collections.Generic", "IList`1", Kind.Interface, false);
1117 generic_icollection_type = CoreLookupType ("System.Collections.Generic", "ICollection`1", Kind.Interface, false);
1118 generic_ienumerable_type = CoreLookupType ("System.Collections.Generic", "IEnumerable`1", Kind.Interface, false);
1119 generic_nullable_type = CoreLookupType ("System", "Nullable`1", Kind.Struct, false);
1122 // Optional types which are used as types and for member lookup
1124 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute", Kind.Class, false);
1125 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers", Kind.Class, false);
1126 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute", Kind.Class, false);
1127 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute", Kind.Class, false);
1128 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute", Kind.Class, false);
1131 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute", Kind.Class, false);
1134 // Note: extension_attribute_type is already loaded
1135 expression_type = CoreLookupType ("System.Linq.Expressions", "Expression`1", Kind.Class, false);
1137 if (!RootContext.StdLib) {
1139 // HACK: When building Mono corlib mcs uses loaded mscorlib which
1140 // has different predefined types and this method sets mscorlib types
1141 // to be same to avoid any type check errors.
1144 Type type = typeof (Type);
1145 Type [] system_4_type_arg = { type, type, type, type };
1147 MethodInfo set_corlib_type_builders =
1148 typeof (System.Reflection.Emit.AssemblyBuilder).GetMethod (
1149 "SetCorlibTypeBuilders", BindingFlags.NonPublic | BindingFlags.Instance, null,
1150 system_4_type_arg, null);
1152 if (set_corlib_type_builders != null) {
1153 object[] args = new object [4];
1154 args [0] = object_type;
1155 args [1] = value_type;
1156 args [2] = enum_type;
1157 args [3] = void_type;
1159 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1161 Report.Warning (-26, 3, "The compilation may fail due to missing `{0}.SetCorlibTypeBuilders({1})' method",
1162 TypeManager.CSharpName (typeof (System.Reflection.Emit.AssemblyBuilder)),
1163 TypeManager.CSharpName (system_4_type_arg));
1168 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1171 /// This is the "old", non-cache based FindMembers() function. We cannot use
1172 /// the cache here because there is no member name argument.
1174 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1175 MemberFilter filter, object criteria)
1177 #if MS_COMPATIBLE && GMCS_SOURCE
1178 if (t.IsGenericType)
1179 t = t.GetGenericTypeDefinition ();
1182 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1185 // `builder_to_declspace' contains all dynamic types.
1189 Timer.StartTimer (TimerType.FindMembers);
1190 list = decl.FindMembers (mt, bf, filter, criteria);
1191 Timer.StopTimer (TimerType.FindMembers);
1196 // We have to take care of arrays specially, because GetType on
1197 // a TypeBuilder array will return a Type, not a TypeBuilder,
1198 // and we can not call FindMembers on this type.
1201 #if MS_COMPATIBLE && GMCS_SOURCE
1204 t.IsSubclassOf (TypeManager.array_type))
1205 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1208 if (t is GenericTypeParameterBuilder) {
1209 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1211 Timer.StartTimer (TimerType.FindMembers);
1212 MemberList list = tparam.FindMembers (
1213 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1214 Timer.StopTimer (TimerType.FindMembers);
1220 // Since FindMembers will not lookup both static and instance
1221 // members, we emulate this behaviour here.
1223 if ((bf & instance_and_static) == instance_and_static){
1224 MemberInfo [] i_members = t.FindMembers (
1225 mt, bf & ~BindingFlags.Static, filter, criteria);
1227 int i_len = i_members.Length;
1229 MemberInfo one = i_members [0];
1232 // If any of these are present, we are done!
1234 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1235 return new MemberList (i_members);
1238 MemberInfo [] s_members = t.FindMembers (
1239 mt, bf & ~BindingFlags.Instance, filter, criteria);
1241 int s_len = s_members.Length;
1242 if (i_len > 0 || s_len > 0)
1243 return new MemberList (i_members, s_members);
1246 return new MemberList (i_members);
1248 return new MemberList (s_members);
1252 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1257 /// This method is only called from within MemberLookup. It tries to use the member
1258 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1259 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1260 /// our return value will already contain all inherited members and the caller don't need
1261 /// to check base classes and interfaces anymore.
1263 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1264 string name, out bool used_cache)
1269 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1270 // and we can ask the DeclSpace for the MemberCache.
1273 if (t.Assembly == CodeGen.Assembly.Builder) {
1274 if (t.IsGenericParameter) {
1275 TypeParameter tparam = (TypeParameter) builder_to_type_param[t];
1278 if (tparam.MemberCache == null)
1279 return new MemberInfo[0];
1281 return tparam.MemberCache.FindMembers (
1282 mt, bf, name, FilterWithClosure_delegate, null);
1286 // We have to take care of arrays specially, because GetType on
1287 // a TypeBuilder array will return a Type, not a TypeBuilder,
1288 // and we can not call FindMembers on this type.
1292 return TypeHandle.ArrayType.MemberCache.FindMembers (
1293 mt, bf, name, FilterWithClosure_delegate, null);
1296 if (t.IsGenericType && !t.IsGenericTypeDefinition)
1297 t = t.GetGenericTypeDefinition ();
1299 if (t is TypeBuilder) {
1301 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1302 cache = decl.MemberCache;
1305 // If this DeclSpace has a MemberCache, use it.
1308 if (cache != null) {
1310 return cache.FindMembers (
1311 mt, bf, name, FilterWithClosure_delegate, null);
1314 // If there is no MemberCache, we need to use the "normal" FindMembers.
1315 // Note, this is a VERY uncommon route!
1318 Timer.StartTimer (TimerType.FindMembers);
1319 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1320 FilterWithClosure_delegate, name);
1321 Timer.StopTimer (TimerType.FindMembers);
1323 return (MemberInfo []) list;
1327 // We have to take care of arrays specially, because GetType on
1328 // a TypeBuilder array will return a Type, not a TypeBuilder,
1329 // and we can not call FindMembers on this type.
1333 return TypeHandle.ArrayType.MemberCache.FindMembers (
1334 mt, bf, name, FilterWithClosure_delegate, null);
1338 if (t is GenericTypeParameterBuilder) {
1339 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1342 if (tparam.MemberCache == null)
1343 return new MemberInfo [0];
1345 return tparam.MemberCache.FindMembers (
1346 mt, bf, name, FilterWithClosure_delegate, null);
1350 if (IsGenericType (t) && (mt == MemberTypes.NestedType)) {
1352 // This happens if we're resolving a class'es base class and interfaces
1353 // in TypeContainer.DefineType(). At this time, the types aren't
1354 // populated yet, so we can't use the cache.
1356 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1357 FilterWithClosure_delegate, name);
1363 // This call will always succeed. There is exactly one TypeHandle instance per
1364 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1365 // the corresponding MemberCache.
1367 cache = TypeHandle.GetMemberCache (t);
1370 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1373 public static bool IsBuiltinType (Type t)
1375 t = TypeToCoreType (t);
1376 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1377 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1378 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1379 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1386 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1387 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1389 public static bool IsPrimitiveType (Type t)
1391 return (t == int32_type || t == uint32_type ||
1392 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1393 t == char_type || t == short_type || t == bool_type ||
1394 t == sbyte_type || t == byte_type || t == ushort_type);
1397 public static bool IsDelegateType (Type t)
1400 if (t.IsGenericParameter)
1404 if (t == TypeManager.delegate_type || t == TypeManager.multicast_delegate_type)
1407 t = DropGenericTypeArguments (t);
1408 return IsSubclassOf (t, TypeManager.delegate_type);
1411 public static bool IsEnumType (Type t)
1413 t = DropGenericTypeArguments (t);
1414 return t.BaseType == TypeManager.enum_type;
1417 public static bool IsBuiltinOrEnum (Type t)
1419 if (IsBuiltinType (t))
1428 public static bool IsAttributeType (Type t)
1430 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1434 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1436 // mcs4: delete, DeclSpace.IsUnmanagedType is replacement
1437 public static bool IsUnmanagedType (Type t)
1439 DeclSpace ds = TypeManager.LookupDeclSpace (t);
1441 return ds.IsUnmanagedType ();
1443 // builtins that are not unmanaged types
1444 if (t == TypeManager.object_type || t == TypeManager.string_type)
1447 if (IsGenericType (t) || IsGenericParameter (t))
1450 if (IsBuiltinOrEnum (t))
1453 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1455 return IsUnmanagedType (GetElementType (t));
1457 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1461 if (!IsValueType (t))
1465 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1466 if (p.IsGenericTypeDefinition)
1473 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1475 foreach (FieldInfo f in fields){
1476 if (!IsUnmanagedType (f.FieldType)){
1486 // Null is considered to be a reference type
1488 public static bool IsReferenceType (Type t)
1490 if (TypeManager.IsGenericParameter (t)) {
1491 GenericConstraints constraints = TypeManager.GetTypeParameterConstraints (t);
1492 if (constraints == null)
1495 return constraints.IsReferenceType;
1498 return !IsStruct (t) && !IsEnumType (t);
1501 public static bool IsValueType (Type t)
1503 if (TypeManager.IsGenericParameter (t)) {
1504 GenericConstraints constraints = TypeManager.GetTypeParameterConstraints (t);
1505 if (constraints == null)
1508 return constraints.IsValueType;
1511 return IsStruct (t) || IsEnumType (t);
1514 public static bool IsStruct (Type t)
1516 return t.BaseType == value_type && t != enum_type && t.IsSealed;
1519 public static bool IsInterfaceType (Type t)
1521 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1525 return tc.Kind == Kind.Interface;
1528 public static bool IsSubclassOf (Type type, Type base_type)
1530 TypeParameter tparam = LookupTypeParameter (type);
1531 TypeParameter pparam = LookupTypeParameter (base_type);
1533 if ((tparam != null) && (pparam != null)) {
1534 if (tparam == pparam)
1537 return tparam.IsSubclassOf (base_type);
1540 #if MS_COMPATIBLE && GMCS_SOURCE
1541 if (type.IsGenericType)
1542 type = type.GetGenericTypeDefinition ();
1545 if (type.IsSubclassOf (base_type))
1549 if (IsEqual (type, base_type))
1552 type = type.BaseType;
1553 } while (type != null);
1558 public static bool IsPrivateAccessible (Type type, Type parent)
1563 if (type.Equals (parent))
1566 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1569 public static bool IsFamilyAccessible (Type type, Type parent)
1571 TypeParameter tparam = LookupTypeParameter (type);
1572 TypeParameter pparam = LookupTypeParameter (parent);
1574 if ((tparam != null) && (pparam != null)) {
1575 if (tparam == pparam)
1578 return tparam.IsSubclassOf (parent);
1582 if (IsInstantiationOfSameGenericType (type, parent))
1585 type = type.BaseType;
1586 } while (type != null);
1592 // Checks whether `type' is a subclass or nested child of `base_type'.
1594 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1597 if (IsFamilyAccessible (type, base_type))
1600 // Handle nested types.
1601 type = type.DeclaringType;
1602 } while (type != null);
1608 // Checks whether `type' is a nested child of `parent'.
1610 public static bool IsNestedChildOf (Type type, Type parent)
1615 type = DropGenericTypeArguments (type);
1616 parent = DropGenericTypeArguments (parent);
1618 if (IsEqual (type, parent))
1621 type = type.DeclaringType;
1622 while (type != null) {
1623 if (IsEqual (type, parent))
1626 type = type.DeclaringType;
1632 public static bool IsSpecialType (Type t)
1634 return t == arg_iterator_type || t == typed_reference_type;
1638 // Checks whether `extern_type' is friend of the output assembly
1640 public static bool IsThisOrFriendAssembly (Assembly assembly)
1642 if (assembly == CodeGen.Assembly.Builder)
1645 if (assembly_internals_vis_attrs.Contains (assembly))
1646 return (bool)(assembly_internals_vis_attrs [assembly]);
1648 if (internals_visible_attr_type == null)
1651 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1652 if (attrs.Length == 0) {
1653 assembly_internals_vis_attrs.Add (assembly, false);
1657 bool is_friend = false;
1659 AssemblyName this_name = CodeGen.Assembly.Name;
1660 byte [] this_token = this_name.GetPublicKeyToken ();
1661 foreach (InternalsVisibleToAttribute attr in attrs) {
1662 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1665 AssemblyName aname = null;
1667 aname = new AssemblyName (attr.AssemblyName);
1668 } catch (FileLoadException) {
1669 } catch (ArgumentException) {
1672 if (aname == null || aname.Name != this_name.Name)
1675 byte [] key_token = aname.GetPublicKeyToken ();
1676 if (key_token != null) {
1677 if (this_token.Length == 0) {
1678 // Same name, but assembly is not strongnamed
1679 Error_FriendAccessNameNotMatching (aname.FullName);
1683 if (!CompareKeyTokens (this_token, key_token))
1691 assembly_internals_vis_attrs.Add (assembly, is_friend);
1696 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1698 for (int i = 0; i < token1.Length; i++)
1699 if (token1 [i] != token2 [i])
1705 static void Error_FriendAccessNameNotMatching (string other_name)
1708 "Friend access was granted to `{0}', but the output assembly is named `{1}'. Try adding a reference to `{0}' or change the output assembly name to match it",
1709 other_name, CodeGen.Assembly.Name.FullName);
1714 // Do the right thing when returning the element type of an
1715 // array type based on whether we are compiling corlib or not
1717 public static Type GetElementType (Type t)
1719 if (RootContext.StdLib)
1720 return t.GetElementType ();
1722 return TypeToCoreType (t.GetElementType ());
1726 /// This method is not implemented by MS runtime for dynamic types
1728 public static bool HasElementType (Type t)
1730 return t.IsArray || t.IsPointer || t.IsByRef;
1733 public static Type GetEnumUnderlyingType (Type t)
1735 t = DropGenericTypeArguments (t);
1736 Enum e = LookupTypeContainer (t) as Enum;
1738 return e.UnderlyingType;
1741 FieldInfo fi = GetPredefinedField (t, Enum.UnderlyingValueField, Location.Null, Type.EmptyTypes);
1743 return TypeManager.int32_type;
1745 return TypeToCoreType (fi.FieldType);
1749 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1753 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1754 /// for anything which is dynamic, and we need this in a number of places,
1755 /// we register this information here, and use it afterwards.
1757 static public void RegisterMethod (MethodBase mb, AParametersCollection ip)
1759 method_params.Add (mb, ip);
1762 static public void RegisterIndexer (PropertyBuilder pb, AParametersCollection p)
1764 method_params.Add (pb, p);
1767 static public AParametersCollection GetParameterData (MethodBase mb)
1769 AParametersCollection pd = (AParametersCollection) method_params [mb];
1772 if (mb.IsGenericMethod && !mb.IsGenericMethodDefinition) {
1773 MethodInfo mi = ((MethodInfo) mb).GetGenericMethodDefinition ();
1774 pd = GetParameterData (mi);
1776 if (mi.IsGenericMethod)
1777 pd = pd.InflateTypes (mi.GetGenericArguments (), mb.GetGenericArguments ());
1779 pd = pd.InflateTypes (mi.DeclaringType.GetGenericArguments (), mb.GetGenericArguments ());
1781 method_params.Add (mb, pd);
1785 if (mb.DeclaringType.Assembly == CodeGen.Assembly.Builder) {
1786 throw new InternalErrorException ("Parameters are not registered for method `{0}'",
1787 TypeManager.CSharpName (mb.DeclaringType) + "." + mb.Name);
1790 pd = ParametersImported.Create (mb);
1792 MethodBase generic = TypeManager.DropGenericMethodArguments (mb);
1793 if (generic != mb) {
1794 pd = TypeManager.GetParameterData (generic);
1795 pd = ParametersImported.Create (pd, mb);
1797 pd = ParametersImported.Create (mb);
1800 method_params.Add (mb, pd);
1805 public static AParametersCollection GetParameterData (PropertyInfo pi)
1807 AParametersCollection pd = (AParametersCollection)method_params [pi];
1809 if (pi is PropertyBuilder)
1810 return ParametersCompiled.EmptyReadOnlyParameters;
1812 ParameterInfo [] p = pi.GetIndexParameters ();
1814 return ParametersCompiled.EmptyReadOnlyParameters;
1816 pd = ParametersImported.Create (p, null);
1817 method_params.Add (pi, pd);
1823 public static AParametersCollection GetDelegateParameters (Type t)
1825 Delegate d = builder_to_declspace [t] as Delegate;
1827 return d.Parameters;
1829 MethodInfo invoke_mb = Delegate.GetInvokeMethod (t, t);
1830 return GetParameterData (invoke_mb);
1833 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1835 if (!method_overrides.Contains (override_method))
1836 method_overrides [override_method] = base_method;
1837 if (method_overrides [override_method] != base_method)
1838 throw new InternalErrorException ("Override mismatch: " + override_method);
1841 static public bool IsOverride (MethodBase m)
1843 m = DropGenericMethodArguments (m);
1845 return m.IsVirtual &&
1846 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1847 (m is MethodBuilder || method_overrides.Contains (m));
1850 static public MethodBase TryGetBaseDefinition (MethodBase m)
1852 m = DropGenericMethodArguments (m);
1854 return (MethodBase) method_overrides [m];
1857 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1859 fields.Add (fb, ic);
1862 public static IConstant GetConstant (FieldInfo fb)
1867 return (IConstant)fields [fb];
1870 public static void RegisterProperty (PropertyInfo pi, PropertyBase pb)
1872 propertybuilder_to_property.Add (pi, pb);
1875 public static PropertyBase GetProperty (PropertyInfo pi)
1877 return (PropertyBase)propertybuilder_to_property [pi];
1880 static public void RegisterFieldBase (FieldBuilder fb, FieldBase f)
1882 fieldbuilders_to_fields.Add (fb, f);
1886 // The return value can be null; This will be the case for
1887 // auxiliary FieldBuilders created by the compiler that have no
1888 // real field being declared on the source code
1890 static public FieldBase GetField (FieldInfo fb)
1893 fb = GetGenericFieldDefinition (fb);
1895 return (FieldBase) fieldbuilders_to_fields [fb];
1898 static public MethodInfo GetAddMethod (EventInfo ei)
1900 if (ei is MyEventBuilder) {
1901 return ((MyEventBuilder)ei).GetAddMethod (true);
1903 return ei.GetAddMethod (true);
1906 static public MethodInfo GetRemoveMethod (EventInfo ei)
1908 if (ei is MyEventBuilder) {
1909 return ((MyEventBuilder)ei).GetRemoveMethod (true);
1911 return ei.GetRemoveMethod (true);
1914 static public void RegisterEventField (EventInfo einfo, EventField e)
1917 events = new Hashtable ();
1919 events.Add (einfo, e);
1922 static public EventField GetEventField (EventInfo ei)
1927 return (EventField) events [ei];
1930 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1932 Hashtable hash = new Hashtable ();
1933 return CheckStructCycles (tc, seen, hash);
1936 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1939 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc.TypeBuilder))
1943 // `seen' contains all types we've already visited.
1945 if (seen.Contains (tc))
1947 seen.Add (tc, null);
1949 if (tc.Fields == null)
1952 foreach (FieldBase field in tc.Fields) {
1953 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1956 Type ftype = field.FieldBuilder.FieldType;
1957 TypeContainer ftc = LookupTypeContainer (ftype);
1961 if (hash.Contains (ftc)) {
1962 Report.Error (523, tc.Location,
1963 "Struct member `{0}.{1}' of type `{2}' " +
1964 "causes a cycle in the struct layout",
1965 tc.Name, field.Name, ftc.Name);
1970 // `hash' contains all types in the current path.
1972 hash.Add (tc, null);
1974 bool ok = CheckStructCycles (ftc, seen, hash);
1981 if (!seen.Contains (ftc))
1982 seen.Add (ftc, null);
1989 /// Given an array of interface types, expand and eliminate repeated ocurrences
1990 /// of an interface.
1994 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1997 public static Type[] ExpandInterfaces (TypeExpr [] base_interfaces)
1999 ArrayList new_ifaces = new ArrayList ();
2001 foreach (TypeExpr iface in base_interfaces){
2002 Type itype = iface.Type;
2004 if (new_ifaces.Contains (itype))
2007 new_ifaces.Add (itype);
2009 Type [] implementing = GetInterfaces (itype);
2011 foreach (Type imp in implementing){
2012 if (!new_ifaces.Contains (imp))
2013 new_ifaces.Add (imp);
2016 Type [] ret = new Type [new_ifaces.Count];
2017 new_ifaces.CopyTo (ret, 0);
2021 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2023 ArrayList new_ifaces = new ArrayList ();
2025 foreach (Type itype in base_interfaces){
2026 if (new_ifaces.Contains (itype))
2029 new_ifaces.Add (itype);
2031 Type [] implementing = GetInterfaces (itype);
2033 foreach (Type imp in implementing){
2034 if (!new_ifaces.Contains (imp))
2035 new_ifaces.Add (imp);
2038 Type [] ret = new Type [new_ifaces.Count];
2039 new_ifaces.CopyTo (ret, 0);
2043 static PtrHashtable iface_cache = new PtrHashtable ();
2046 /// This function returns the interfaces in the type `t'. Works with
2047 /// both types and TypeBuilders.
2049 public static Type [] GetInterfaces (Type t)
2051 Type [] cached = iface_cache [t] as Type [];
2056 // The reason for catching the Array case is that Reflection.Emit
2057 // will not return a TypeBuilder for Array types of TypeBuilder types,
2058 // but will still throw an exception if we try to call GetInterfaces
2061 // Since the array interfaces are always constant, we return those for
2066 t = TypeManager.array_type;
2068 if ((t is TypeBuilder) || IsGenericType (t)) {
2069 Type [] base_ifaces;
2071 if (t.BaseType == null)
2072 base_ifaces = Type.EmptyTypes;
2074 base_ifaces = GetInterfaces (t.BaseType);
2076 if (IsGenericType (t))
2077 #if MS_COMPATIBLE && GMCS_SOURCE
2078 type_ifaces = t.GetGenericTypeDefinition().GetInterfaces ();
2080 type_ifaces = t.GetInterfaces ();
2083 type_ifaces = (Type []) builder_to_ifaces [t];
2084 if (type_ifaces == null || type_ifaces.Length == 0)
2085 type_ifaces = Type.EmptyTypes;
2087 int base_count = base_ifaces.Length;
2088 Type [] result = new Type [base_count + type_ifaces.Length];
2089 base_ifaces.CopyTo (result, 0);
2090 type_ifaces.CopyTo (result, base_count);
2092 iface_cache [t] = result;
2095 } else if (t is GenericTypeParameterBuilder){
2096 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2097 if (type_ifaces == null || type_ifaces.Length == 0)
2098 type_ifaces = Type.EmptyTypes;
2100 iface_cache [t] = type_ifaces;
2104 Type[] ifaces = t.GetInterfaces ();
2105 iface_cache [t] = ifaces;
2111 // gets the interfaces that are declared explicitly on t
2113 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2115 return (Type []) builder_to_ifaces [t];
2119 /// The following is used to check if a given type implements an interface.
2120 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2122 public static bool ImplementsInterface (Type t, Type iface)
2127 // FIXME OPTIMIZATION:
2128 // as soon as we hit a non-TypeBuiler in the interface
2129 // chain, we could return, as the `Type.GetInterfaces'
2130 // will return all the interfaces implement by the type
2134 interfaces = GetInterfaces (t);
2136 if (interfaces != null){
2137 foreach (Type i in interfaces){
2144 } while (t != null);
2149 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2151 // This is a custom version of Convert.ChangeType() which works
2152 // with the TypeBuilder defined types when compiling corlib.
2153 public static object ChangeType (object value, Type conversionType, out bool error)
2155 IConvertible convert_value = value as IConvertible;
2157 if (convert_value == null){
2164 // We must use Type.Equals() here since `conversionType' is
2165 // the TypeBuilder created version of a system type and not
2166 // the system type itself. You cannot use Type.GetTypeCode()
2167 // on such a type - it'd always return TypeCode.Object.
2170 // We cannot rely on build-in type conversions as they are
2171 // more limited than what C# supports.
2172 // See char -> float/decimal/double conversion
2177 if (conversionType.Equals (typeof (Boolean)))
2178 return (object)(convert_value.ToBoolean (nf_provider));
2179 if (conversionType.Equals (typeof (Byte)))
2180 return (object)(convert_value.ToByte (nf_provider));
2181 if (conversionType.Equals (typeof (Char)))
2182 return (object)(convert_value.ToChar (nf_provider));
2183 if (conversionType.Equals (typeof (DateTime)))
2184 return (object)(convert_value.ToDateTime (nf_provider));
2186 if (conversionType.Equals (decimal_type)) {
2187 if (convert_value.GetType () == TypeManager.char_type)
2188 return (decimal)convert_value.ToInt32 (nf_provider);
2189 return convert_value.ToDecimal (nf_provider);
2192 if (conversionType.Equals (typeof (Double))) {
2193 if (convert_value.GetType () == TypeManager.char_type)
2194 return (double)convert_value.ToInt32 (nf_provider);
2195 return convert_value.ToDouble (nf_provider);
2198 if (conversionType.Equals (typeof (Int16)))
2199 return (object)(convert_value.ToInt16 (nf_provider));
2200 if (conversionType.Equals (int32_type))
2201 return (object)(convert_value.ToInt32 (nf_provider));
2202 if (conversionType.Equals (int64_type))
2203 return (object)(convert_value.ToInt64 (nf_provider));
2204 if (conversionType.Equals (typeof (SByte)))
2205 return (object)(convert_value.ToSByte (nf_provider));
2207 if (conversionType.Equals (typeof (Single))) {
2208 if (convert_value.GetType () == TypeManager.char_type)
2209 return (float)convert_value.ToInt32 (nf_provider);
2210 return convert_value.ToSingle (nf_provider);
2213 if (conversionType.Equals (typeof (String)))
2214 return (object)(convert_value.ToString (nf_provider));
2215 if (conversionType.Equals (typeof (UInt16)))
2216 return (object)(convert_value.ToUInt16 (nf_provider));
2217 if (conversionType.Equals (typeof (UInt32)))
2218 return (object)(convert_value.ToUInt32 (nf_provider));
2219 if (conversionType.Equals (typeof (UInt64)))
2220 return (object)(convert_value.ToUInt64 (nf_provider));
2221 if (conversionType.Equals (typeof (Object)))
2222 return (object)(value);
2232 // When compiling with -nostdlib and the type is imported from an external assembly
2233 // SRE uses "wrong" type and we have to convert it to the right compiler instance.
2235 public static Type TypeToCoreType (Type t)
2237 if (RootContext.StdLib || t.Module != typeof (object).Module)
2240 TypeCode tc = Type.GetTypeCode (t);
2243 case TypeCode.Boolean:
2244 return TypeManager.bool_type;
2246 return TypeManager.byte_type;
2247 case TypeCode.SByte:
2248 return TypeManager.sbyte_type;
2250 return TypeManager.char_type;
2251 case TypeCode.Int16:
2252 return TypeManager.short_type;
2253 case TypeCode.UInt16:
2254 return TypeManager.ushort_type;
2255 case TypeCode.Int32:
2256 return TypeManager.int32_type;
2257 case TypeCode.UInt32:
2258 return TypeManager.uint32_type;
2259 case TypeCode.Int64:
2260 return TypeManager.int64_type;
2261 case TypeCode.UInt64:
2262 return TypeManager.uint64_type;
2263 case TypeCode.Single:
2264 return TypeManager.float_type;
2265 case TypeCode.Double:
2266 return TypeManager.double_type;
2267 case TypeCode.String:
2268 return TypeManager.string_type;
2269 case TypeCode.Decimal:
2270 return TypeManager.decimal_type;
2273 if (t == typeof (void))
2274 return TypeManager.void_type;
2275 if (t == typeof (object))
2276 return TypeManager.object_type;
2277 if (t == typeof (System.Type))
2278 return TypeManager.type_type;
2279 if (t == typeof (System.IntPtr))
2280 return TypeManager.intptr_type;
2281 if (t == typeof (System.UIntPtr))
2282 return TypeManager.uintptr_type;
2285 int dim = t.GetArrayRank ();
2286 t = GetElementType (t);
2287 return t.MakeArrayType (dim);
2290 t = GetElementType (t);
2291 return t.MakeByRefType ();
2294 t = GetElementType (t);
2295 return t.MakePointerType ();
2302 /// Utility function that can be used to probe whether a type
2303 /// is managed or not.
2305 public static bool VerifyUnManaged (Type t, Location loc)
2307 if (IsUnmanagedType (t))
2311 t = GetElementType (t);
2313 Report.SymbolRelatedToPreviousError (t);
2314 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2321 /// Returns the name of the indexer in a given type.
2324 /// The default is not always `Item'. The user can change this behaviour by
2325 /// using the IndexerNameAttribute in the container.
2326 /// For example, the String class indexer is named `Chars' not `Item'
2328 public static string IndexerPropertyName (Type t)
2330 t = DropGenericTypeArguments (t);
2331 if (t is TypeBuilder) {
2332 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2333 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2336 System.Attribute attr = System.Attribute.GetCustomAttribute (
2337 t, TypeManager.default_member_type);
2339 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2340 return dma.MemberName;
2343 return TypeContainer.DefaultIndexerName;
2346 static MethodInfo declare_local_method = null;
2348 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2350 if (declare_local_method == null){
2351 declare_local_method = typeof (ILGenerator).GetMethod (
2353 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2355 new Type [] { typeof (Type), typeof (bool)},
2357 if (declare_local_method == null){
2358 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2359 return ig.DeclareLocal (t);
2362 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2365 private static bool IsSignatureEqual (Type a, Type b)
2368 /// Consider the following example (bug #77674):
2370 /// public abstract class A
2372 /// public abstract T Foo<T> ();
2375 /// public abstract class B : A
2377 /// public override U Foo<T> ()
2378 /// { return default (U); }
2381 /// Here, `T' and `U' are method type parameters from different methods
2382 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2384 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2385 /// we need to do a signature based comparision and consider them equal.
2391 if (a.IsGenericParameter && b.IsGenericParameter &&
2392 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2393 return a.GenericParameterPosition == b.GenericParameterPosition;
2397 if (a.IsArray && b.IsArray) {
2398 if (a.GetArrayRank () != b.GetArrayRank ())
2401 return IsSignatureEqual (GetElementType (a), GetElementType (b));
2404 if (a.IsByRef && b.IsByRef)
2405 return IsSignatureEqual (GetElementType (a), GetElementType (b));
2408 if (a.IsGenericType && b.IsGenericType) {
2409 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2412 Type[] aargs = a.GetGenericArguments ();
2413 Type[] bargs = b.GetGenericArguments ();
2415 if (aargs.Length != bargs.Length)
2418 for (int i = 0; i < aargs.Length; i++) {
2419 if (!IsSignatureEqual (aargs [i], bargs [i]))
2431 // Returns whether the array of memberinfos contains the given method
2433 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method, bool ignoreDeclType)
2435 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2437 foreach (MethodBase method in array) {
2438 if (!ignoreDeclType && method.DeclaringType != new_method.DeclaringType)
2441 if (method.Name != new_method.Name)
2444 if (method is MethodInfo && new_method is MethodInfo &&
2446 TypeToCoreType (((MethodInfo) method).ReturnType),
2447 TypeToCoreType (((MethodInfo) new_method).ReturnType)))
2450 Type [] old_args = TypeManager.GetParameterData (method).Types;
2451 int old_count = old_args.Length;
2454 if (new_args.Length != old_count)
2457 for (i = 0; i < old_count; i++){
2458 if (!IsSignatureEqual (old_args [i], new_args [i]))
2471 // We copy methods from `new_members' into `target_list' if the signature
2472 // for the method from in the new list does not exist in the target_list
2474 // The name is assumed to be the same.
2476 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2478 if (target_list == null){
2479 target_list = new ArrayList ();
2481 foreach (MemberInfo mi in new_members){
2482 if (mi is MethodBase)
2483 target_list.Add (mi);
2488 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2489 target_list.CopyTo (target_array, 0);
2491 foreach (MemberInfo mi in new_members){
2492 MethodBase new_method = (MethodBase) mi;
2494 if (!ArrayContainsMethod (target_array, new_method, true))
2495 target_list.Add (new_method);
2502 // Tracks the generic parameters.
2504 static PtrHashtable builder_to_type_param;
2506 public static void AddTypeParameter (Type t, TypeParameter tparam)
2508 if (!builder_to_type_param.Contains (t))
2509 builder_to_type_param.Add (t, tparam);
2512 public static TypeParameter LookupTypeParameter (Type t)
2514 return (TypeParameter) builder_to_type_param [t];
2517 // This method always return false for non-generic compiler,
2518 // while Type.IsGenericParameter is returned if it is supported.
2519 public static bool IsGenericParameter (Type type)
2522 return type.IsGenericParameter;
2528 public static int GenericParameterPosition (Type type)
2531 return type.GenericParameterPosition;
2533 throw new InternalErrorException ("should not be called");
2537 public static bool IsGenericType (Type type)
2540 return type.IsGenericType;
2546 public static bool IsGenericTypeDefinition (Type type)
2549 return type.IsGenericTypeDefinition;
2555 public static bool ContainsGenericParameters (Type type)
2558 return type.ContainsGenericParameters;
2564 public static FieldInfo GetGenericFieldDefinition (FieldInfo fi)
2567 if (fi.DeclaringType.IsGenericTypeDefinition ||
2568 !fi.DeclaringType.IsGenericType)
2571 Type t = fi.DeclaringType.GetGenericTypeDefinition ();
2572 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2573 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2575 // TODO: use CodeGen.Module.Builder.ResolveField (fi.MetadataToken);
2576 foreach (FieldInfo f in t.GetFields (bf))
2577 if (f.MetadataToken == fi.MetadataToken)
2584 public static bool IsEqual (Type a, Type b)
2587 // MS BCL returns true even if enum types are different
2588 if (a.BaseType == TypeManager.enum_type || b.BaseType == TypeManager.enum_type)
2589 return a.FullName == b.FullName;
2591 // Some types are never equal
2592 if (a == TypeManager.null_type || a == TypeManager.anonymous_method_type)
2599 if (a.IsGenericParameter && b.IsGenericParameter) {
2600 // TODO: needs more testing before cleaning up
2601 //if (a.DeclaringMethod != b.DeclaringMethod &&
2602 // (a.DeclaringMethod == null || b.DeclaringMethod == null))
2604 return a.GenericParameterPosition == b.GenericParameterPosition;
2607 if (a.IsArray && b.IsArray) {
2608 if (a.GetArrayRank () != b.GetArrayRank ())
2610 return IsEqual (GetElementType (a), GetElementType (b));
2613 if (a.IsByRef && b.IsByRef)
2614 return IsEqual (a.GetElementType (), b.GetElementType ());
2616 if (a.IsGenericType && b.IsGenericType) {
2617 Type adef = a.GetGenericTypeDefinition ();
2618 Type bdef = b.GetGenericTypeDefinition ();
2623 if (adef.IsEnum && bdef.IsEnum)
2626 Type[] aargs = a.GetGenericArguments ();
2627 Type[] bargs = b.GetGenericArguments ();
2629 if (aargs.Length != bargs.Length)
2632 for (int i = 0; i < aargs.Length; i++) {
2633 if (!IsEqual (aargs [i], bargs [i]))
2644 public static bool IsEqual (Type[] a, Type[] b)
2646 if (a == null || b == null || a.Length != b.Length)
2649 for (int i = 0; i < a.Length; ++i) {
2650 if (a [i] == null || b [i] == null) {
2657 if (!IsEqual (a [i], b [i]))
2664 public static Type DropGenericTypeArguments (Type t)
2667 if (!t.IsGenericType)
2669 // Micro-optimization: a generic typebuilder is always a generic type definition
2670 if (t is TypeBuilder)
2672 return t.GetGenericTypeDefinition ();
2678 public static MethodBase DropGenericMethodArguments (MethodBase m)
2681 if (m.IsGenericMethod)
2682 m = ((MethodInfo) m).GetGenericMethodDefinition ();
2684 Type t = m.DeclaringType;
2685 if (!t.IsGenericType || t.IsGenericTypeDefinition)
2688 t = t.GetGenericTypeDefinition ();
2689 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2690 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2693 // TODO: use CodeGen.Module.Builder.ResolveMethod ()
2697 if (m is ConstructorInfo) {
2698 foreach (ConstructorInfo c in t.GetConstructors (bf))
2699 if (c.MetadataToken == m.MetadataToken)
2702 foreach (MethodBase mb in t.GetMethods (bf))
2703 if (mb.MetadataToken == m.MetadataToken)
2711 public static Type[] GetGenericArguments (MethodBase mi)
2714 return mi.GetGenericArguments ();
2716 return Type.EmptyTypes;
2720 public static Type[] GetTypeArguments (Type t)
2723 DeclSpace tc = LookupDeclSpace (t);
2726 return Type.EmptyTypes;
2728 TypeParameter[] tparam = tc.TypeParameters;
2729 Type[] ret = new Type [tparam.Length];
2730 for (int i = 0; i < tparam.Length; i++) {
2731 ret [i] = tparam [i].Type;
2732 if (ret [i] == null)
2733 throw new InternalErrorException ();
2738 return t.GetGenericArguments ();
2740 throw new InternalErrorException ();
2744 public static GenericConstraints GetTypeParameterConstraints (Type t)
2747 if (!t.IsGenericParameter)
2748 throw new InvalidOperationException ();
2750 TypeParameter tparam = LookupTypeParameter (t);
2752 return tparam.GenericConstraints;
2754 return ReflectionConstraints.GetConstraints (t);
2756 throw new InternalErrorException ();
2760 public static bool HasGenericArguments (Type t)
2762 return GetNumberOfTypeArguments (t) > 0;
2765 public static int GetNumberOfTypeArguments (Type t)
2768 if (t.IsGenericParameter)
2770 DeclSpace tc = LookupDeclSpace (t);
2772 return tc.IsGeneric ? tc.CountTypeParameters : 0;
2774 return t.IsGenericType ? t.GetGenericArguments ().Length : 0;
2781 /// Check whether `type' and `parent' are both instantiations of the same
2782 /// generic type. Note that we do not check the type parameters here.
2784 public static bool IsInstantiationOfSameGenericType (Type type, Type parent)
2786 int tcount = GetNumberOfTypeArguments (type);
2787 int pcount = GetNumberOfTypeArguments (parent);
2789 if (tcount != pcount)
2792 type = DropGenericTypeArguments (type);
2793 parent = DropGenericTypeArguments (parent);
2795 return type.Equals (parent);
2799 /// Whether `mb' is a generic method definition.
2801 public static bool IsGenericMethodDefinition (MethodBase mb)
2804 if (mb.DeclaringType is TypeBuilder) {
2805 IMethodData method = (IMethodData) builder_to_method [mb];
2809 return method.GenericMethod != null;
2812 return mb.IsGenericMethodDefinition;
2819 /// Whether `mb' is a generic method.
2821 public static bool IsGenericMethod (MethodBase mb)
2824 return mb.IsGenericMethod;
2830 public static bool IsNullableType (Type t)
2833 return generic_nullable_type == DropGenericTypeArguments (t);
2839 public static bool IsNullableTypeOf (Type t, Type nullable)
2842 if (!IsNullableType (t))
2845 return GetTypeArguments (t) [0] == nullable;
2851 public static bool IsNullableValueType (Type t)
2854 if (!IsNullableType (t))
2857 return IsValueType (GetTypeArguments (t) [0]);
2864 #region MemberLookup implementation
2867 // Whether we allow private members in the result (since FindMembers
2868 // uses NonPublic for both protected and private), we need to distinguish.
2871 internal class Closure {
2872 internal bool private_ok;
2874 // Who is invoking us and which type is being queried currently.
2875 internal Type invocation_type;
2876 internal Type qualifier_type;
2878 // The assembly that defines the type is that is calling us
2879 internal Assembly invocation_assembly;
2880 internal IList almost_match;
2882 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2884 if (invocation_type == null)
2887 if (is_static && qualifier_type == null)
2888 // It resolved from a simple name, so it should be visible.
2891 if (IsNestedChildOf (invocation_type, m.DeclaringType))
2894 for (Type t = invocation_type; t != null; t = t.DeclaringType) {
2895 if (!IsFamilyAccessible (t, m.DeclaringType))
2898 // Although a derived class can access protected members of its base class
2899 // it cannot do so through an instance of the base class (CS1540).
2900 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2901 if (is_static || qualifier_type == null ||
2902 IsInstantiationOfSameGenericType (t, qualifier_type) ||
2903 IsFamilyAccessible (qualifier_type, t))
2907 if (almost_match != null)
2908 almost_match.Add (m);
2914 // This filter filters by name + whether it is ok to include private
2915 // members in the search
2917 internal bool Filter (MemberInfo m, object filter_criteria)
2920 // Hack: we know that the filter criteria will always be in the
2921 // `closure' // fields.
2924 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2927 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2928 (invocation_type != null) &&
2929 IsPrivateAccessible (m.DeclaringType, invocation_type))
2933 // Ugly: we need to find out the type of `m', and depending
2934 // on this, tell whether we accept or not
2936 if (m is MethodBase){
2937 MethodBase mb = (MethodBase) m;
2938 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2940 if (ma == MethodAttributes.Public)
2943 if (ma == MethodAttributes.PrivateScope)
2946 if (ma == MethodAttributes.Private)
2947 return private_ok ||
2948 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2949 IsNestedChildOf (invocation_type, m.DeclaringType);
2951 if (TypeManager.IsThisOrFriendAssembly (mb.DeclaringType.Assembly)) {
2952 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2955 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2959 // Family, FamORAssem or FamANDAssem
2960 return CheckValidFamilyAccess (mb.IsStatic, m);
2963 if (m is FieldInfo){
2964 FieldInfo fi = (FieldInfo) m;
2965 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2967 if (fa == FieldAttributes.Public)
2970 if (fa == FieldAttributes.PrivateScope)
2973 if (fa == FieldAttributes.Private)
2974 return private_ok ||
2975 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2976 IsNestedChildOf (invocation_type, m.DeclaringType);
2978 if (TypeManager.IsThisOrFriendAssembly (fi.DeclaringType.Assembly)) {
2979 if ((fa == FieldAttributes.Assembly) ||
2980 (fa == FieldAttributes.FamORAssem))
2983 if ((fa == FieldAttributes.Assembly) ||
2984 (fa == FieldAttributes.FamANDAssem))
2988 // Family, FamORAssem or FamANDAssem
2989 return CheckValidFamilyAccess (fi.IsStatic, m);
2993 // EventInfos and PropertyInfos, return true because they lack
2994 // permission information, so we need to check later on the methods.
3000 static Closure closure = new Closure ();
3001 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
3004 // Looks up a member called `name' in the `queried_type'. This lookup
3005 // is done by code that is contained in the definition for `invocation_type'
3006 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
3008 // `invocation_type' is used to check whether we're allowed to access the requested
3009 // member wrt its protection level.
3011 // When called from MemberAccess, `qualifier_type' is the type which is used to access
3012 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
3013 // is B and qualifier_type is A). This is used to do the CS1540 check.
3015 // When resolving a SimpleName, `qualifier_type' is null.
3017 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
3018 // the same than `queried_type' - except when we're being called from BaseAccess;
3019 // in this case, `invocation_type' is the current type and `queried_type' the base
3020 // type, so this'd normally trigger a CS1540.
3022 // The binding flags are `bf' and the kind of members being looked up are `mt'
3024 // The return value always includes private members which code in `invocation_type'
3025 // is allowed to access (using the specified `qualifier_type' if given); only use
3026 // BindingFlags.NonPublic to bypass the permission check.
3028 // The 'almost_match' argument is used for reporting error CS1540.
3030 // Returns an array of a single element for everything but Methods/Constructors
3031 // that might return multiple matches.
3033 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
3034 Type queried_type, MemberTypes mt,
3035 BindingFlags original_bf, string name, IList almost_match)
3037 Timer.StartTimer (TimerType.MemberLookup);
3039 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
3040 queried_type, mt, original_bf, name, almost_match);
3042 Timer.StopTimer (TimerType.MemberLookup);
3047 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
3048 Type queried_type, MemberTypes mt,
3049 BindingFlags original_bf, string name, IList almost_match)
3051 BindingFlags bf = original_bf;
3053 ArrayList method_list = null;
3054 Type current_type = queried_type;
3055 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
3056 bool skip_iface_check = true, used_cache = false;
3057 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
3059 closure.invocation_type = invocation_type;
3060 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
3061 closure.qualifier_type = qualifier_type;
3062 closure.almost_match = almost_match;
3064 // This is from the first time we find a method
3065 // in most cases, we do not actually find a method in the base class
3066 // so we can just ignore it, and save the arraylist allocation
3067 MemberInfo [] first_members_list = null;
3068 bool use_first_members_list = false;
3074 // `NonPublic' is lame, because it includes both protected and
3075 // private methods, so we need to control this behavior by
3076 // explicitly tracking if a private method is ok or not.
3078 // The possible cases are:
3079 // public, private and protected (internal does not come into the
3082 if ((invocation_type != null) &&
3083 ((invocation_type == current_type) ||
3084 IsNestedChildOf (invocation_type, current_type)) ||
3086 bf = original_bf | BindingFlags.NonPublic;
3090 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
3092 Timer.StopTimer (TimerType.MemberLookup);
3094 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
3096 Timer.StartTimer (TimerType.MemberLookup);
3099 // When queried for an interface type, the cache will automatically check all
3100 // inherited members, so we don't need to do this here. However, this only
3101 // works if we already used the cache in the first iteration of this loop.
3103 // If we used the cache in any further iteration, we can still terminate the
3104 // loop since the cache always looks in all base classes.
3110 skip_iface_check = false;
3112 if (current_type == TypeManager.object_type)
3115 current_type = current_type.BaseType;
3118 // This happens with interfaces, they have a null
3119 // basetype. Look members up in the Object class.
3121 if (current_type == null) {
3122 current_type = TypeManager.object_type;
3127 if (list.Length == 0)
3131 // Events and types are returned by both `static' and `instance'
3132 // searches, which means that our above FindMembers will
3133 // return two copies of the same.
3135 if (list.Length == 1 && !(list [0] is MethodBase)){
3140 // Multiple properties: we query those just to find out the indexer
3143 if (list [0] is PropertyInfo)
3147 // We found an event: the cache lookup returns both the event and
3148 // its private field.
3150 if (list [0] is EventInfo) {
3151 if ((list.Length == 2) && (list [1] is FieldInfo))
3152 return new MemberInfo [] { list [0] };
3158 // We found methods, turn the search into "method scan"
3162 if (first_members_list != null) {
3163 if (use_first_members_list) {
3164 method_list = CopyNewMethods (method_list, first_members_list);
3165 use_first_members_list = false;
3168 method_list = CopyNewMethods (method_list, list);
3170 first_members_list = list;
3171 use_first_members_list = true;
3172 mt &= (MemberTypes.Method | MemberTypes.Constructor);
3174 } while (searching);
3176 if (use_first_members_list)
3177 return first_members_list;
3179 if (method_list != null && method_list.Count > 0) {
3180 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3183 // This happens if we already used the cache in the first iteration, in this case
3184 // the cache already looked in all interfaces.
3186 if (skip_iface_check)
3190 // Interfaces do not list members they inherit, so we have to
3193 if (!queried_type.IsInterface)
3196 if (queried_type.IsArray)
3197 queried_type = TypeManager.array_type;
3199 Type [] ifaces = GetInterfaces (queried_type);
3203 foreach (Type itype in ifaces){
3206 x = MemberLookup (null, null, itype, mt, bf, name, null);
3214 const BindingFlags AllMembers = BindingFlags.Public | BindingFlags.NonPublic |
3215 BindingFlags.Static | BindingFlags.Instance |
3216 BindingFlags.DeclaredOnly;
3218 // Currently is designed to work with external types only
3219 public static PropertyInfo GetPropertyFromAccessor (MethodBase mb)
3221 if (!mb.IsSpecialName)
3224 string name = mb.Name;
3225 if (name.Length < 5)
3228 if (name [3] != '_')
3231 if (name.StartsWith ("get") || name.StartsWith ("set")) {
3232 MemberInfo[] pi = mb.DeclaringType.FindMembers (MemberTypes.Property, AllMembers,
3233 Type.FilterName, name.Substring (4));
3238 // This can happen when property is indexer (it can have same name but different parameters)
3239 foreach (PropertyInfo p in pi) {
3240 foreach (MethodInfo p_mi in p.GetAccessors (true)) {
3241 if (p_mi == mb || TypeManager.GetParameterData (p_mi).Equals (TypeManager.GetParameterData (mb)))
3250 // Currently is designed to work with external types only
3251 public static MemberInfo GetEventFromAccessor (MethodBase mb)
3253 if (!mb.IsSpecialName)
3256 string name = mb.Name;
3257 if (name.Length < 5)
3260 if (name.StartsWith ("add_"))
3261 return mb.DeclaringType.GetEvent (name.Substring (4), AllMembers);
3263 if (name.StartsWith ("remove_"))
3264 return mb.DeclaringType.GetEvent (name.Substring (7), AllMembers);
3269 // Tests whether external method is really special
3270 public static bool IsSpecialMethod (MethodBase mb)
3272 if (!mb.IsSpecialName)
3275 IMethodData md = TypeManager.GetMethod (mb);
3277 return (md is AbstractPropertyEventMethod || md is Operator);
3279 PropertyInfo pi = GetPropertyFromAccessor (mb);
3281 return IsValidProperty (pi);
3283 if (GetEventFromAccessor (mb) != null)
3286 string name = mb.Name;
3287 if (name.StartsWith ("op_"))
3288 return Operator.GetName (name) != null;
3293 // Tests whether imported property is valid C# property.
3294 // TODO: It seems to me that we should do a lot of sanity tests before
3295 // we accept property as C# property
3296 static bool IsValidProperty (PropertyInfo pi)
3298 MethodInfo get_method = pi.GetGetMethod (true);
3299 MethodInfo set_method = pi.GetSetMethod (true);
3302 if (get_method != null && set_method != null) {
3303 g_count = get_method.GetParameters ().Length;
3304 s_count = set_method.GetParameters ().Length;
3305 if (g_count + 1 != s_count)
3307 } else if (get_method != null) {
3308 g_count = get_method.GetParameters ().Length;
3309 } else if (set_method != null) {
3310 s_count = set_method.GetParameters ().Length;
3314 // DefaultMemberName and indexer name has to match to identify valid C# indexer
3316 if ((s_count > 1 || g_count > 0) && TypeManager.default_member_type != null) {
3317 object[] o = pi.DeclaringType.GetCustomAttributes (TypeManager.default_member_type, false);
3321 DefaultMemberAttribute dma = (DefaultMemberAttribute) o [0];
3322 if (dma.MemberName != pi.Name)
3324 if (get_method != null && "get_" + dma.MemberName != get_method.Name)
3326 if (set_method != null && "set_" + dma.MemberName != set_method.Name)
3338 /// There is exactly one instance of this class per type.
3340 public sealed class TypeHandle : IMemberContainer {
3341 public readonly IMemberContainer BaseType;
3343 readonly int id = ++next_id;
3344 static int next_id = 0;
3346 static TypeHandle ()
3352 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3353 /// a TypeHandle yet, a new instance of it is created. This static method
3354 /// ensures that we'll only have one TypeHandle instance per type.
3356 private static TypeHandle GetTypeHandle (Type t)
3358 TypeHandle handle = (TypeHandle) type_hash [t];
3362 handle = new TypeHandle (t);
3363 type_hash.Add (t, handle);
3367 public static MemberCache GetMemberCache (Type t)
3369 return GetTypeHandle (t).MemberCache;
3372 public static void CleanUp ()
3377 public static void Reset ()
3379 type_hash = new PtrHashtable ();
3383 /// Returns the TypeHandle for TypeManager.object_type.
3385 public static IMemberContainer ObjectType {
3387 if (object_type != null)
3390 object_type = GetTypeHandle (TypeManager.object_type);
3397 /// Returns the TypeHandle for TypeManager.array_type.
3399 public static TypeHandle ArrayType {
3401 if (array_type != null)
3404 array_type = GetTypeHandle (TypeManager.array_type);
3410 private static PtrHashtable type_hash;
3412 private static TypeHandle object_type = null;
3413 private static TypeHandle array_type = null;
3416 private string full_name;
3417 private bool is_interface;
3418 private MemberCache member_cache;
3419 private MemberCache base_cache;
3421 private TypeHandle (Type type)
3424 full_name = type.FullName != null ? type.FullName : type.Name;
3425 if (type.BaseType != null) {
3426 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3427 BaseType = base_cache.Container;
3428 } else if (type.IsInterface)
3429 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3430 this.is_interface = type.IsInterface || TypeManager.IsGenericParameter (type);
3431 this.member_cache = new MemberCache (this);
3434 // IMemberContainer methods
3436 public string Name {
3448 public MemberCache BaseCache {
3454 public bool IsInterface {
3456 return is_interface;
3460 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3462 MemberInfo [] members;
3465 if (type is GenericTypeParameterBuilder)
3466 return MemberList.Empty;
3470 type = TypeManager.DropGenericTypeArguments (type);
3472 if (mt == MemberTypes.Event)
3473 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3475 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3478 if (members.Length == 0)
3479 return MemberList.Empty;
3481 Array.Reverse (members);
3482 return new MemberList (members);
3485 // IMemberFinder methods
3487 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3488 MemberFilter filter, object criteria)
3490 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3493 public MemberCache MemberCache {
3495 return member_cache;
3499 public override string ToString ()
3501 if (BaseType != null)
3502 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3504 return "TypeHandle (" + id + "," + Name + ")";