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;
80 static public Type marshal_as_attr_type;
81 static public Type param_array_type;
82 static public Type void_ptr_type;
83 static public Type indexer_name_type;
84 static public Type exception_type;
85 static public Type obsolete_attribute_type;
86 static public Type conditional_attribute_type;
87 static public Type in_attribute_type;
88 static public Type out_attribute_type;
89 static public Type extension_attribute_type;
90 static public Type default_parameter_value_attribute_type;
92 static public Type anonymous_method_type;
93 static public Type cls_compliant_attribute_type;
94 static public Type typed_reference_type;
95 static public Type arg_iterator_type;
96 static public Type mbr_type;
97 static public Type struct_layout_attribute_type;
98 static public Type field_offset_attribute_type;
99 static public Type security_attr_type;
100 static public Type required_attr_type;
101 static public Type guid_attr_type;
102 static public Type assembly_culture_attribute_type;
103 static public Type assembly_version_attribute_type;
104 static public Type coclass_attr_type;
105 static public Type comimport_attr_type;
106 public static Type runtime_helpers_type;
107 public static Type internals_visible_attr_type;
112 static internal Type fixed_buffer_attr_type;
113 static internal Type default_charset_type;
114 static internal Type type_forwarder_attr_type;
115 static internal Type isvolatile_type;
116 static public Type activator_type;
117 static public Type generic_ilist_type;
118 static public Type generic_icollection_type;
119 static public Type generic_ienumerator_type;
120 static public Type generic_ienumerable_type;
121 static public Type generic_nullable_type;
126 static internal Type expression_type;
127 public static Type parameter_expression_type;
130 // Expressions representing the internal types. Used during declaration
133 static public TypeExpr system_object_expr, system_string_expr;
134 static public TypeExpr system_boolean_expr, system_decimal_expr;
135 static public TypeExpr system_single_expr, system_double_expr;
136 static public TypeExpr system_sbyte_expr, system_byte_expr;
137 static public TypeExpr system_int16_expr, system_uint16_expr;
138 static public TypeExpr system_int32_expr, system_uint32_expr;
139 static public TypeExpr system_int64_expr, system_uint64_expr;
140 static public TypeExpr system_char_expr, system_void_expr;
141 static public TypeExpr system_valuetype_expr;
142 static public TypeExpr system_intptr_expr;
143 public static TypeExpr expression_type_expr;
147 // These methods are called by code generated by the compiler
149 static public MethodInfo string_isinterned_string;
150 static public MethodInfo system_type_get_type_from_handle;
151 static public MethodInfo bool_movenext_void;
152 static public MethodInfo void_dispose_void;
153 static public MethodInfo void_monitor_enter_object;
154 static public MethodInfo void_monitor_exit_object;
155 static public MethodInfo void_initializearray_array_fieldhandle;
156 static public MethodInfo delegate_combine_delegate_delegate;
157 static public MethodInfo delegate_remove_delegate_delegate;
158 static public MethodInfo int_get_offset_to_string_data;
159 static public MethodInfo int_interlocked_compare_exchange;
160 static public PropertyInfo ienumerator_getcurrent;
161 public static MethodInfo methodbase_get_type_from_handle;
162 public static MethodInfo methodbase_get_type_from_handle_generic;
163 public static MethodInfo fieldinfo_get_field_from_handle;
164 static public MethodInfo activator_create_instance;
167 // The attribute constructors.
169 static public ConstructorInfo void_decimal_ctor_five_args;
170 static public ConstructorInfo void_decimal_ctor_int_arg;
171 static public ConstructorInfo default_member_ctor;
172 static public ConstructorInfo decimal_constant_attribute_ctor;
173 static internal ConstructorInfo struct_layout_attribute_ctor;
174 static public ConstructorInfo field_offset_attribute_ctor;
175 public static ConstructorInfo invalid_operation_exception_ctor;
177 static public CustomAttributeBuilder param_array_attr;
178 static CustomAttributeBuilder compiler_generated_attr;
181 static internal ConstructorInfo fixed_buffer_attr_ctor;
184 static internal CustomAttributeBuilder extension_attribute_attr;
186 static PtrHashtable builder_to_declspace;
188 static PtrHashtable builder_to_member_cache;
191 // Tracks the interfaces implemented by typebuilders. We only
192 // enter those who do implement or or more interfaces
194 static PtrHashtable builder_to_ifaces;
197 // Maps PropertyBuilder to a Type array that contains
198 // the arguments to the indexer
200 static Hashtable indexer_arguments;
203 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
205 static Hashtable method_params;
208 // A hash table from override methods to their base virtual method.
210 static Hashtable method_overrides;
213 // Keeps track of methods
216 static Hashtable builder_to_method;
219 // Contains all public types from referenced assemblies.
220 // This member is used only if CLS Compliance verification is required.
222 public static Hashtable AllClsTopLevelTypes;
224 static Hashtable fieldbuilders_to_fields;
225 static Hashtable propertybuilder_to_property;
226 static Hashtable fields;
227 static Hashtable events;
228 static PtrHashtable assembly_internals_vis_attrs;
230 public static void CleanUp ()
232 // Lets get everything clean so that we can collect before generating code
233 builder_to_declspace = null;
234 builder_to_member_cache = null;
235 builder_to_ifaces = null;
236 builder_to_type_param = null;
237 indexer_arguments = null;
238 method_params = null;
239 builder_to_method = null;
244 propertybuilder_to_property = null;
245 assembly_internals_vis_attrs = null;
247 TypeHandle.CleanUp ();
251 // These are expressions that represent some of the internal data types, used
254 static void InitExpressionTypes ()
256 system_object_expr = new TypeLookupExpression ("System.Object");
257 system_string_expr = new TypeLookupExpression ("System.String");
258 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
259 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
260 system_single_expr = new TypeLookupExpression ("System.Single");
261 system_double_expr = new TypeLookupExpression ("System.Double");
262 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
263 system_byte_expr = new TypeLookupExpression ("System.Byte");
264 system_int16_expr = new TypeLookupExpression ("System.Int16");
265 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
266 system_int32_expr = new TypeLookupExpression ("System.Int32");
267 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
268 system_int64_expr = new TypeLookupExpression ("System.Int64");
269 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
270 system_char_expr = new TypeLookupExpression ("System.Char");
271 system_void_expr = new TypeLookupExpression ("System.Void");
272 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
273 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
276 static TypeManager ()
280 InitExpressionTypes ();
283 static public void Reset ()
285 builder_to_declspace = new PtrHashtable ();
286 builder_to_member_cache = new PtrHashtable ();
287 builder_to_method = new PtrHashtable ();
288 builder_to_type_param = new PtrHashtable ();
289 method_params = new PtrHashtable ();
290 method_overrides = new PtrHashtable ();
291 indexer_arguments = new PtrHashtable ();
292 builder_to_ifaces = new PtrHashtable ();
294 fieldbuilders_to_fields = new Hashtable ();
295 propertybuilder_to_property = new Hashtable ();
296 fields = new Hashtable ();
297 type_hash = new DoubleHash ();
298 assembly_internals_vis_attrs = new PtrHashtable ();
300 // TODO: I am really bored by all this static stuff
301 string_isinterned_string =
302 system_type_get_type_from_handle =
305 void_monitor_enter_object =
306 void_monitor_exit_object =
307 void_initializearray_array_fieldhandle =
308 delegate_combine_delegate_delegate =
309 delegate_remove_delegate_delegate =
310 int_get_offset_to_string_data =
311 int_interlocked_compare_exchange =
312 methodbase_get_type_from_handle =
313 methodbase_get_type_from_handle_generic =
314 fieldinfo_get_field_from_handle =
315 activator_create_instance = null;
317 ienumerator_getcurrent = null;
319 void_decimal_ctor_five_args =
320 void_decimal_ctor_int_arg =
321 default_member_ctor =
322 decimal_constant_attribute_ctor =
323 struct_layout_attribute_ctor =
324 field_offset_attribute_ctor =
325 invalid_operation_exception_ctor =
326 fixed_buffer_attr_ctor = null;
329 compiler_generated_attr =
330 extension_attribute_attr = null;
332 isvolatile_type = null;
334 // to uncover regressions
335 AllClsTopLevelTypes = null;
338 public static void AddUserType (DeclSpace ds)
340 builder_to_declspace.Add (ds.TypeBuilder, ds);
344 // This entry point is used by types that we define under the covers
346 public static void RegisterBuilder (Type tb, Type [] ifaces)
349 builder_to_ifaces [tb] = ifaces;
352 public static void AddMethod (MethodBase builder, IMethodData method)
354 builder_to_method.Add (builder, method);
355 method_params.Add (builder, method.ParameterInfo);
358 public static IMethodData GetMethod (MethodBase builder)
360 return (IMethodData) builder_to_method [builder];
364 /// Returns the DeclSpace whose Type is `t' or null if there is no
365 /// DeclSpace for `t' (ie, the Type comes from a library)
367 public static DeclSpace LookupDeclSpace (Type t)
369 return builder_to_declspace [t] as DeclSpace;
373 /// Returns the TypeContainer whose Type is `t' or null if there is no
374 /// TypeContainer for `t' (ie, the Type comes from a library)
376 public static TypeContainer LookupTypeContainer (Type t)
378 return builder_to_declspace [t] as TypeContainer;
381 public static MemberCache LookupMemberCache (Type t)
383 if (t.Module == CodeGen.Module.Builder) {
384 DeclSpace container = (DeclSpace)builder_to_declspace [t];
385 if (container != null)
386 return container.MemberCache;
390 if (t is GenericTypeParameterBuilder) {
391 TypeParameter container = builder_to_type_param [t] as TypeParameter;
393 if (container != null)
394 return container.MemberCache;
398 return TypeHandle.GetMemberCache (t);
401 public static MemberCache LookupBaseInterfacesCache (Type t)
403 Type [] ifaces = GetInterfaces (t);
405 if (ifaces != null && ifaces.Length == 1)
406 return LookupMemberCache (ifaces [0]);
408 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
409 MemberCache cache = builder_to_member_cache [t] as MemberCache;
413 cache = new MemberCache (ifaces);
414 builder_to_member_cache.Add (t, cache);
418 public static TypeContainer LookupInterface (Type t)
420 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
421 if ((tc == null) || (tc.Kind != Kind.Interface))
427 public static Delegate LookupDelegate (Type t)
429 return builder_to_declspace [t] as Delegate;
432 public static Class LookupClass (Type t)
434 return (Class) builder_to_declspace [t];
438 // We use this hash for multiple kinds of constructed types:
440 // (T, "&") Given T, get T &
441 // (T, "*") Given T, get T *
442 // (T, "[]") Given T and a array dimension, get T []
443 // (T, X) Given a type T and a simple name X, get the type T+X
445 // Accessibility tests, if necessary, should be done by the user
447 static DoubleHash type_hash = new DoubleHash ();
450 // Gets the reference to T version of the Type (T&)
452 public static Type GetReferenceType (Type t)
455 return t.MakeByRefType ();
457 return GetConstructedType (t, "&");
462 // Gets the pointer to T version of the Type (T*)
464 public static Type GetPointerType (Type t)
466 return GetConstructedType (t, "*");
469 public static Type GetConstructedType (Type t, string dim)
472 if (type_hash.Lookup (t, dim, out ret))
475 ret = t.Module.GetType (t.ToString () + dim);
477 type_hash.Insert (t, dim, ret);
482 ret = GetReferenceType (t);
483 type_hash.Insert (t, dim, ret);
488 if (t.IsGenericParameter || t.IsGenericType) {
491 while ((pos < dim.Length) && (dim [pos] == '[')) {
494 if (dim [pos] == ']') {
495 result = result.MakeArrayType ();
498 if (pos < dim.Length)
501 type_hash.Insert (t, dim, result);
506 while (dim [pos] == ',') {
510 if ((dim [pos] != ']') || (pos != dim.Length-1))
513 result = result.MakeArrayType (rank + 1);
514 type_hash.Insert (t, dim, result);
520 type_hash.Insert (t, dim, null);
524 public static CustomAttributeBuilder GetCompilerGeneratedAttribute (Location loc)
526 if (compiler_generated_attr != null)
527 return compiler_generated_attr;
529 Type t = TypeManager.CoreLookupType (
530 "System.Runtime.CompilerServices", "CompilerGeneratedAttribute", Kind.Class, true);
532 // TODO: it cannot be null
536 compiler_generated_attr = new CustomAttributeBuilder (
537 GetPredefinedConstructor (t, loc, Type.EmptyTypes), new object[0]);
539 return compiler_generated_attr;
542 public static Type GetNestedType (Type t, string name)
545 if (!type_hash.Lookup (t, name, out ret)) {
546 ret = t.GetNestedType (name,
547 BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
548 type_hash.Insert (t, name, ret);
554 /// Fills static table with exported types from all referenced assemblies.
555 /// This information is required for CLS Compliance tests.
557 public static void LoadAllImportedTypes ()
559 AllClsTopLevelTypes = new Hashtable (1500);
560 foreach (Assembly a in RootNamespace.Global.Assemblies) {
561 foreach (Type t in a.GetExportedTypes ()) {
562 AllClsTopLevelTypes [t.FullName.ToLower (System.Globalization.CultureInfo.InvariantCulture)] = null;
567 public static bool NamespaceClash (string name, Location loc)
569 if (! RootNamespace.Global.IsNamespace (name))
572 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
577 /// Returns the C# name of a type if possible, or the full type name otherwise
579 static public string CSharpName (Type t)
584 if (t == typeof (ArglistParameter))
587 if (t == typeof (AnonymousMethod))
588 return "anonymous method";
590 return CSharpName (GetFullName (t));
593 static readonly char [] elements = new char [] { '*', '[' };
595 public static string CSharpName (string name)
597 if (name.Length > 10) {
599 case "System.Int32": return "int";
600 case "System.Int64": return "long";
601 case "System.String": return "string";
602 case "System.Boolean": return "bool";
603 case "System.Void": return "void";
604 case "System.Object": return "object";
605 case "System.UInt32": return "uint";
606 case "System.Int16": return "short";
607 case "System.UInt16": return "ushort";
608 case "System.UInt64": return "ulong";
609 case "System.Single": return "float";
610 case "System.Double": return "double";
611 case "System.Decimal": return "decimal";
612 case "System.Char": return "char";
613 case "System.Byte": return "byte";
614 case "System.SByte": return "sbyte";
617 int idx = name.IndexOfAny (elements, 10);
619 return CSharpName (name.Substring (0, idx)) + name.Substring (idx);
622 if (name [0] == AnonymousTypeClass.ClassNamePrefix [0] && name.StartsWith (AnonymousTypeClass.ClassNamePrefix))
623 return AnonymousTypeClass.SignatureForError;
625 return name.Replace ('+', '.');
628 static public string CSharpName (Type[] types)
630 if (types.Length == 0)
633 StringBuilder sb = new StringBuilder ();
634 for (int i = 0; i < types.Length; ++i) {
638 sb.Append (CSharpName (types [i]));
640 return sb.ToString ();
643 // Used for error reporting to show symbolic name instead of underlying value
644 public static string CSharpEnumValue (Type t, object value)
646 t = DropGenericTypeArguments (t);
647 Enum e = LookupDeclSpace (t) as Enum;
649 return System.Enum.GetName (t, value);
651 return e.GetDefinition (value).GetSignatureForError ();
655 /// Returns the signature of the method with full namespace classification
657 static public string GetFullNameSignature (MemberInfo mi)
659 PropertyInfo pi = mi as PropertyInfo;
661 MethodBase pmi = pi.GetGetMethod (true);
663 pmi = pi.GetSetMethod (true);
664 if (GetParameterData (pmi).Count > 0)
667 return (mi is MethodBase)
668 ? CSharpSignature (mi as MethodBase)
669 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
673 private static int GetFullName (Type t, StringBuilder sb)
677 if (!t.IsGenericType) {
678 sb.Append (t.FullName);
682 if (t.DeclaringType != null) {
683 pos = GetFullName (t.DeclaringType, sb);
685 } else if (t.Namespace != null && t.Namespace.Length != 0) {
686 sb.Append (t.Namespace);
689 sb.Append (RemoveGenericArity (t.Name));
691 Type[] this_args = GetTypeArguments (t);
693 if (this_args.Length < pos)
694 throw new InternalErrorException (
695 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
696 if (this_args.Length == pos)
701 sb.Append (CSharpName (this_args [pos++]));
702 if (pos == this_args.Length)
710 static string GetFullName (Type t)
713 string dimension = t.Name.Substring (t.Name.LastIndexOf ('['));
714 return GetFullName (t.GetElementType ()) + dimension;
717 if (IsNullableType (t) && !t.IsGenericTypeDefinition) {
718 t = GetTypeArguments (t)[0];
719 return CSharpName (t) + "?";
722 if (t.IsGenericParameter)
724 if (!t.IsGenericType)
727 StringBuilder sb = new StringBuilder ();
728 int pos = GetFullName (t, sb);
730 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
731 return sb.ToString ();
734 public static string GetFullName (Type t)
740 public static string RemoveGenericArity (string from)
742 int i = from.IndexOf ('`');
744 return from.Substring (0, i);
749 /// When we need to report accessors as well
751 static public string CSharpSignature (MethodBase mb)
753 return CSharpSignature (mb, false);
757 /// Returns the signature of the method
759 static public string CSharpSignature (MethodBase mb, bool show_accessor)
761 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
764 ParameterData iparams = GetParameterData (mb);
765 string parameters = iparams.GetSignatureForError ();
766 int accessor_end = 0;
768 if (!mb.IsConstructor && TypeManager.IsSpecialMethod (mb)) {
769 string op_name = Operator.GetName (mb.Name);
770 if (op_name != null) {
771 sig.Append ("operator ");
772 sig.Append (op_name);
773 sig.Append (parameters);
774 return sig.ToString ();
777 bool is_getter = mb.Name.StartsWith ("get_");
778 bool is_setter = mb.Name.StartsWith ("set_");
779 if (is_getter || is_setter || mb.Name.StartsWith ("add_")) {
781 } else if (mb.Name.StartsWith ("remove_")) {
786 if (iparams.Count > (is_getter ? 0 : 1)) {
787 sig.Append ("this[");
789 sig.Append (parameters.Substring (1, parameters.Length - 2));
791 sig.Append (parameters.Substring (1, parameters.LastIndexOf (',') - 1));
794 sig.Append (mb.Name.Substring (accessor_end + 1));
797 if (mb.Name == ".ctor")
798 sig.Append (RemoveGenericArity (mb.DeclaringType.Name));
800 sig.Append (mb.Name);
803 if (TypeManager.IsGenericMethod (mb)) {
804 Type[] args = mb.GetGenericArguments ();
806 for (int i = 0; i < args.Length; i++) {
809 sig.Append (CSharpName (args [i]));
816 sig.Append (parameters);
819 if (show_accessor && accessor_end > 0) {
821 sig.Append (mb.Name.Substring (0, accessor_end));
824 return sig.ToString ();
827 public static string GetMethodName (MethodInfo m)
830 if (!IsGenericMethodDefinition (m) && !IsGenericMethod (m))
833 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
839 static public string CSharpSignature (EventInfo ei)
841 return CSharpName (ei.DeclaringType) + "." + ei.Name;
845 // Looks up a type, and aborts if it is not found. This is used
846 // by predefined types required by the compiler
848 public static Type CoreLookupType (string ns_name, string name, Kind type_kind, bool required)
851 if (RootContext.StdLib) {
852 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
853 expr = ns.Lookup (RootContext.ToplevelTypes, name, Location.Null);
856 Report.DisableReporting ();
858 TypeLookupExpression tle = new TypeLookupExpression (ns_name + "." + name);
859 expr = tle.ResolveAsTypeTerminal (RootContext.ToplevelTypes, false);
862 Report.EnableReporting ();
867 Report.Error (518, "The predefined type `{0}.{1}' is not defined or imported",
874 if (RootContext.StdLib || t == null || !required)
877 // TODO: All predefined imported types have to have correct signature
878 if (t.Module != CodeGen.Module.Builder)
881 DeclSpace ds = (DeclSpace)RootContext.ToplevelTypes.GetDefinition (t.FullName);
882 if (ds is Delegate) {
883 if (type_kind == Kind.Delegate)
886 TypeContainer tc = (TypeContainer)ds;
887 if (tc.Kind == type_kind)
891 Report.Error (520, ds.Location, "The predefined type `{0}.{1}' is not declared correctly",
896 static MemberInfo GetPredefinedMember (Type t, string name, MemberTypes mt, Location loc, params Type [] args)
898 const BindingFlags flags = instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly;
900 MemberInfo [] members = MemberLookup (null, null, t, mt, flags, name, null);
901 if (members != null) {
902 for (int i = 0; i < members.Length; ++i) {
903 MemberInfo member = members [i];
904 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor) {
905 MethodBase mb = member as MethodBase;
909 ParameterData pd = TypeManager.GetParameterData (mb);
910 if (IsEqual (pd.Types, args))
913 if (mt == MemberTypes.Field) {
914 FieldInfo fi = member as FieldInfo;
918 if (args.Length >= 1 && !IsEqual (TypeToCoreType (fi.FieldType), args [0]))
924 if (mt == MemberTypes.Property) {
925 PropertyInfo pi = member as PropertyInfo;
929 if (args.Length >= 1 && !IsEqual (TypeToCoreType (pi.PropertyType), args [0]))
937 string method_args = null;
938 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor)
939 method_args = "(" + TypeManager.CSharpName (args) + ")";
941 Report.Error (656, loc, "The compiler required member `{0}.{1}{2}' could not be found or is inaccessible",
942 TypeManager.CSharpName (t), name, method_args);
948 // Returns the ConstructorInfo for "args"
950 public static ConstructorInfo GetPredefinedConstructor (Type t, Location loc, params Type [] args)
952 return (ConstructorInfo) GetPredefinedMember (t, ConstructorInfo.ConstructorName, MemberTypes.Constructor, loc, args);
956 // Returns the MethodInfo for a method named `name' defined
957 // in type `t' which takes arguments of types `args'
959 public static MethodInfo GetPredefinedMethod (Type t, string name, Location loc, params Type [] args)
961 return (MethodInfo)GetPredefinedMember (t, name, MemberTypes.Method, loc, args);
964 public static FieldInfo GetPredefinedField (Type t, string name, Location loc, params Type [] args)
966 return (FieldInfo) GetPredefinedMember (t, name, MemberTypes.Field, loc, args);
969 public static PropertyInfo GetPredefinedProperty (Type t, string name, Location loc, params Type [] args)
971 return (PropertyInfo) GetPredefinedMember (t, name, MemberTypes.Property, loc, args);
975 /// The types have to be initialized after the initial
976 /// population of the type has happened (for example, to
977 /// bootstrap the corlib.dll
979 public static bool InitCoreTypes ()
981 object_type = CoreLookupType ("System", "Object", Kind.Class, true);
982 system_object_expr.Type = object_type;
983 value_type = CoreLookupType ("System", "ValueType", Kind.Class, true);
984 system_valuetype_expr.Type = value_type;
985 attribute_type = CoreLookupType ("System", "Attribute", Kind.Class, true);
987 int32_type = CoreLookupType ("System", "Int32", Kind.Struct, true);
988 int64_type = CoreLookupType ("System", "Int64", Kind.Struct, true);
989 uint32_type = CoreLookupType ("System", "UInt32", Kind.Struct, true);
990 uint64_type = CoreLookupType ("System", "UInt64", Kind.Struct, true);
991 byte_type = CoreLookupType ("System", "Byte", Kind.Struct, true);
992 sbyte_type = CoreLookupType ("System", "SByte", Kind.Struct, true);
993 short_type = CoreLookupType ("System", "Int16", Kind.Struct, true);
994 ushort_type = CoreLookupType ("System", "UInt16", Kind.Struct, true);
996 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator", Kind.Interface, true);
997 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable", Kind.Interface, true);
998 idisposable_type = CoreLookupType ("System", "IDisposable", Kind.Interface, true);
1000 // HACK: DefineType immediately resolves iterators (very wrong)
1001 generic_ienumerator_type = CoreLookupType ("System.Collections.Generic", "IEnumerator`1", Kind.Interface, false);
1003 char_type = CoreLookupType ("System", "Char", Kind.Struct, true);
1004 string_type = CoreLookupType ("System", "String", Kind.Class, true);
1005 float_type = CoreLookupType ("System", "Single", Kind.Struct, true);
1006 double_type = CoreLookupType ("System", "Double", Kind.Struct, true);
1007 decimal_type = CoreLookupType ("System", "Decimal", Kind.Struct, true);
1008 bool_type = CoreLookupType ("System", "Boolean", Kind.Struct, true);
1009 intptr_type = CoreLookupType ("System", "IntPtr", Kind.Struct, true);
1010 uintptr_type = CoreLookupType ("System", "UIntPtr", Kind.Struct, true);
1012 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate", Kind.Class, true);
1013 delegate_type = CoreLookupType ("System", "Delegate", Kind.Class, true);
1015 enum_type = CoreLookupType ("System", "Enum", Kind.Class, true);
1016 array_type = CoreLookupType ("System", "Array", Kind.Class, true);
1017 void_type = CoreLookupType ("System", "Void", Kind.Struct, true);
1018 type_type = CoreLookupType ("System", "Type", Kind.Class, true);
1019 exception_type = CoreLookupType ("System", "Exception", Kind.Class, true);
1021 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle", Kind.Struct, true);
1022 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle", Kind.Struct, true);
1024 param_array_type = CoreLookupType ("System", "ParamArrayAttribute", Kind.Class, true);
1025 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute", Kind.Class, true);
1027 return Report.Errors == 0;
1031 // Initializes optional core types
1033 public static void InitOptionalCoreTypes ()
1035 void_ptr_type = GetPointerType (void_type);
1036 char_ptr_type = GetPointerType (char_type);
1039 // Initialize InternalsVisibleTo as the very first optional type. Otherwise we would populate
1040 // types cache with incorrect accessiblity when any of optional types is internal.
1042 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute", Kind.Class, false);
1044 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle", Kind.Struct, false);
1045 asynccallback_type = CoreLookupType ("System", "AsyncCallback", Kind.Delegate, false);
1046 iasyncresult_type = CoreLookupType ("System", "IAsyncResult", Kind.Interface, false);
1047 typed_reference_type = CoreLookupType ("System", "TypedReference", Kind.Struct, false);
1048 arg_iterator_type = CoreLookupType ("System", "ArgIterator", Kind.Struct, false);
1049 mbr_type = CoreLookupType ("System", "MarshalByRefObject", Kind.Class, false);
1052 // Optional attributes, used for error reporting only
1054 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute", Kind.Class, false);
1055 if (obsolete_attribute_type != null) {
1056 Class c = TypeManager.LookupClass (obsolete_attribute_type);
1061 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute", Kind.Class, false);
1062 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute", Kind.Class, false);
1063 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute", Kind.Class, false);
1064 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute", Kind.Class, false);
1065 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute", Kind.Class, false);
1066 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute", Kind.Class, false);
1067 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute", Kind.Class, false);
1068 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute", Kind.Class, false);
1069 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute", Kind.Class, false);
1070 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute", Kind.Class, false);
1071 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute", Kind.Class, false);
1072 assembly_version_attribute_type = CoreLookupType ("System.Reflection", "AssemblyVersionAttribute", Kind.Class, false);
1073 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute", Kind.Class, false);
1074 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute", Kind.Class, false);
1075 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute", Kind.Class, false);
1076 default_parameter_value_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultParameterValueAttribute", Kind.Class, false);
1079 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute", Kind.Class, false);
1080 type_forwarder_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "TypeForwardedToAttribute", Kind.Class, false);
1081 generic_ilist_type = CoreLookupType ("System.Collections.Generic", "IList`1", Kind.Interface, false);
1082 generic_icollection_type = CoreLookupType ("System.Collections.Generic", "ICollection`1", Kind.Interface, false);
1083 generic_ienumerable_type = CoreLookupType ("System.Collections.Generic", "IEnumerable`1", Kind.Interface, false);
1084 generic_nullable_type = CoreLookupType ("System", "Nullable`1", Kind.Struct, false);
1087 // Optional types which are used as types and for member lookup
1089 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute", Kind.Class, false);
1090 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers", Kind.Class, false);
1091 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute", Kind.Class, false);
1092 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute", Kind.Class, false);
1093 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute", Kind.Class, false);
1096 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute", Kind.Class, false);
1099 extension_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "ExtensionAttribute", Kind.Class, false);
1100 expression_type = CoreLookupType ("System.Linq.Expressions", "Expression`1", Kind.Class, false);
1102 if (!RootContext.StdLib) {
1104 // HACK: When building Mono corlib mcs uses loaded mscorlib which
1105 // has different predefined types and this method sets mscorlib types
1106 // to be same to avoid any type check errors.
1109 Type type = typeof (Type);
1110 Type [] system_4_type_arg = { type, type, type, type };
1112 MethodInfo set_corlib_type_builders =
1113 typeof (System.Reflection.Emit.AssemblyBuilder).GetMethod (
1114 "SetCorlibTypeBuilders", BindingFlags.NonPublic | BindingFlags.Instance, null,
1115 system_4_type_arg, null);
1117 if (set_corlib_type_builders != null) {
1118 object[] args = new object [4];
1119 args [0] = object_type;
1120 args [1] = value_type;
1121 args [2] = enum_type;
1122 args [3] = void_type;
1124 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1126 Report.Warning (-26, 3, "The compilation may fail due to missing `{0}.SetCorlibTypeBuilders({1})' method",
1127 TypeManager.CSharpName (typeof (System.Reflection.Emit.AssemblyBuilder)),
1128 TypeManager.CSharpName (system_4_type_arg));
1132 system_string_expr.Type = string_type;
1133 system_boolean_expr.Type = bool_type;
1134 system_decimal_expr.Type = decimal_type;
1135 system_single_expr.Type = float_type;
1136 system_double_expr.Type = double_type;
1137 system_sbyte_expr.Type = sbyte_type;
1138 system_byte_expr.Type = byte_type;
1139 system_int16_expr.Type = short_type;
1140 system_uint16_expr.Type = ushort_type;
1141 system_int32_expr.Type = int32_type;
1142 system_uint32_expr.Type = uint32_type;
1143 system_int64_expr.Type = int64_type;
1144 system_uint64_expr.Type = uint64_type;
1145 system_char_expr.Type = char_type;
1146 system_void_expr.Type = void_type;
1149 // These are only used for compare purposes
1151 anonymous_method_type = typeof (AnonymousMethod);
1152 null_type = typeof (NullLiteral);
1155 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1158 /// This is the "old", non-cache based FindMembers() function. We cannot use
1159 /// the cache here because there is no member name argument.
1161 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1162 MemberFilter filter, object criteria)
1164 #if MS_COMPATIBLE && GMCS_SOURCE
1165 if (t.IsGenericType)
1166 t = t.GetGenericTypeDefinition ();
1169 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1172 // `builder_to_declspace' contains all dynamic types.
1176 Timer.StartTimer (TimerType.FindMembers);
1177 list = decl.FindMembers (mt, bf, filter, criteria);
1178 Timer.StopTimer (TimerType.FindMembers);
1183 // We have to take care of arrays specially, because GetType on
1184 // a TypeBuilder array will return a Type, not a TypeBuilder,
1185 // and we can not call FindMembers on this type.
1188 #if MS_COMPATIBLE && GMCS_SOURCE
1191 t.IsSubclassOf (TypeManager.array_type))
1192 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1195 if (t is GenericTypeParameterBuilder) {
1196 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1198 Timer.StartTimer (TimerType.FindMembers);
1199 MemberList list = tparam.FindMembers (
1200 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1201 Timer.StopTimer (TimerType.FindMembers);
1207 // Since FindMembers will not lookup both static and instance
1208 // members, we emulate this behaviour here.
1210 if ((bf & instance_and_static) == instance_and_static){
1211 MemberInfo [] i_members = t.FindMembers (
1212 mt, bf & ~BindingFlags.Static, filter, criteria);
1214 int i_len = i_members.Length;
1216 MemberInfo one = i_members [0];
1219 // If any of these are present, we are done!
1221 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1222 return new MemberList (i_members);
1225 MemberInfo [] s_members = t.FindMembers (
1226 mt, bf & ~BindingFlags.Instance, filter, criteria);
1228 int s_len = s_members.Length;
1229 if (i_len > 0 || s_len > 0)
1230 return new MemberList (i_members, s_members);
1233 return new MemberList (i_members);
1235 return new MemberList (s_members);
1239 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1244 /// This method is only called from within MemberLookup. It tries to use the member
1245 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1246 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1247 /// our return value will already contain all inherited members and the caller don't need
1248 /// to check base classes and interfaces anymore.
1250 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1251 string name, out bool used_cache)
1256 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1257 // and we can ask the DeclSpace for the MemberCache.
1260 if (t.Assembly == CodeGen.Assembly.Builder) {
1261 if (t.IsGenericParameter) {
1262 TypeParameter tparam = (TypeParameter) builder_to_type_param[t];
1265 if (tparam.MemberCache == null)
1266 return new MemberInfo[0];
1268 return tparam.MemberCache.FindMembers (
1269 mt, bf, name, FilterWithClosure_delegate, null);
1272 if (t.IsGenericType && !t.IsGenericTypeDefinition)
1273 t = t.GetGenericTypeDefinition ();
1275 if (t is TypeBuilder) {
1277 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1278 cache = decl.MemberCache;
1281 // If this DeclSpace has a MemberCache, use it.
1284 if (cache != null) {
1286 return cache.FindMembers (
1287 mt, bf, name, FilterWithClosure_delegate, null);
1290 // If there is no MemberCache, we need to use the "normal" FindMembers.
1291 // Note, this is a VERY uncommon route!
1294 Timer.StartTimer (TimerType.FindMembers);
1295 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1296 FilterWithClosure_delegate, name);
1297 Timer.StopTimer (TimerType.FindMembers);
1299 return (MemberInfo []) list;
1303 // We have to take care of arrays specially, because GetType on
1304 // a TypeBuilder array will return a Type, not a TypeBuilder,
1305 // and we can not call FindMembers on this type.
1309 return TypeHandle.ArrayType.MemberCache.FindMembers (
1310 mt, bf, name, FilterWithClosure_delegate, null);
1314 if (t is GenericTypeParameterBuilder) {
1315 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1318 if (tparam.MemberCache == null)
1319 return new MemberInfo [0];
1321 return tparam.MemberCache.FindMembers (
1322 mt, bf, name, FilterWithClosure_delegate, null);
1326 if (IsGenericType (t) && (mt == MemberTypes.NestedType)) {
1328 // This happens if we're resolving a class'es base class and interfaces
1329 // in TypeContainer.DefineType(). At this time, the types aren't
1330 // populated yet, so we can't use the cache.
1332 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1333 FilterWithClosure_delegate, name);
1339 // This call will always succeed. There is exactly one TypeHandle instance per
1340 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1341 // the corresponding MemberCache.
1343 cache = TypeHandle.GetMemberCache (t);
1346 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1349 public static bool IsBuiltinType (Type t)
1351 t = TypeToCoreType (t);
1352 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1353 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1354 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1355 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1362 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1363 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1365 public static bool IsPrimitiveType (Type t)
1367 return (t == int32_type || t == uint32_type ||
1368 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1369 t == char_type || t == short_type || t == bool_type ||
1370 t == sbyte_type || t == byte_type || t == ushort_type);
1373 public static bool IsDelegateType (Type t)
1376 if (t.IsGenericParameter)
1380 if (t == TypeManager.delegate_type)
1383 t = DropGenericTypeArguments (t);
1384 return IsSubclassOf (t, TypeManager.delegate_type);
1387 public static bool IsEnumType (Type t)
1389 t = DropGenericTypeArguments (t);
1390 return t.BaseType == TypeManager.enum_type;
1393 public static bool IsBuiltinOrEnum (Type t)
1395 if (IsBuiltinType (t))
1404 public static bool IsAttributeType (Type t)
1406 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1409 static Stack unmanaged_enclosing_types = new Stack (4);
1412 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1414 public static bool IsUnmanagedType (Type t)
1416 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1417 if (unmanaged_enclosing_types.Contains (t))
1420 // builtins that are not unmanaged types
1421 if (t == TypeManager.object_type || t == TypeManager.string_type)
1424 if (IsGenericType (t) || IsGenericParameter (t))
1427 if (IsBuiltinOrEnum (t))
1430 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1434 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1438 if (!IsValueType (t))
1442 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1443 if (p.IsGenericTypeDefinition)
1448 unmanaged_enclosing_types.Push (t);
1452 if (t is TypeBuilder) {
1453 TypeContainer tc = LookupTypeContainer (t);
1454 if (tc.Fields != null){
1455 foreach (FieldBase f in tc.Fields){
1456 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1457 if ((f.ModFlags & Modifiers.STATIC) != 0)
1459 if (f.MemberType == null)
1461 if (!IsUnmanagedType (f.MemberType)){
1462 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1468 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1470 foreach (FieldInfo f in fields){
1471 if (!IsUnmanagedType (f.FieldType)){
1472 Report.SymbolRelatedToPreviousError (f);
1478 unmanaged_enclosing_types.Pop ();
1484 // Null is considered to be a reference type
1486 public static bool IsReferenceType (Type t)
1488 if (TypeManager.IsGenericParameter (t)) {
1489 GenericConstraints constraints = TypeManager.GetTypeParameterConstraints (t);
1490 if (constraints == null)
1493 return constraints.IsReferenceType;
1496 return !t.IsValueType;
1499 public static bool IsValueType (Type t)
1501 return t.IsValueType || IsGenericParameter (t);
1504 public static bool IsInterfaceType (Type t)
1506 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1510 return tc.Kind == Kind.Interface;
1513 public static bool IsSubclassOf (Type type, Type base_type)
1515 TypeParameter tparam = LookupTypeParameter (type);
1516 TypeParameter pparam = LookupTypeParameter (base_type);
1518 if ((tparam != null) && (pparam != null)) {
1519 if (tparam == pparam)
1522 return tparam.IsSubclassOf (base_type);
1525 #if MS_COMPATIBLE && GMCS_SOURCE
1526 if (type.IsGenericType)
1527 type = type.GetGenericTypeDefinition ();
1530 if (type.IsSubclassOf (base_type))
1534 if (IsEqual (type, base_type))
1537 type = type.BaseType;
1538 } while (type != null);
1543 public static bool IsPrivateAccessible (Type type, Type parent)
1548 if (type.Equals (parent))
1551 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1554 public static bool IsFamilyAccessible (Type type, Type parent)
1556 TypeParameter tparam = LookupTypeParameter (type);
1557 TypeParameter pparam = LookupTypeParameter (parent);
1559 if ((tparam != null) && (pparam != null)) {
1560 if (tparam == pparam)
1563 return tparam.IsSubclassOf (parent);
1567 if (IsInstantiationOfSameGenericType (type, parent))
1570 type = type.BaseType;
1571 } while (type != null);
1577 // Checks whether `type' is a subclass or nested child of `base_type'.
1579 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1582 if (IsFamilyAccessible (type, base_type))
1585 // Handle nested types.
1586 type = type.DeclaringType;
1587 } while (type != null);
1593 // Checks whether `type' is a nested child of `parent'.
1595 public static bool IsNestedChildOf (Type type, Type parent)
1600 type = DropGenericTypeArguments (type);
1601 parent = DropGenericTypeArguments (parent);
1603 if (IsEqual (type, parent))
1606 type = type.DeclaringType;
1607 while (type != null) {
1608 if (IsEqual (type, parent))
1611 type = type.DeclaringType;
1618 // Checks whether `extern_type' is friend of the output assembly
1620 public static bool IsThisOrFriendAssembly (Assembly assembly)
1622 if (assembly == CodeGen.Assembly.Builder)
1625 if (assembly_internals_vis_attrs.Contains (assembly))
1626 return (bool)(assembly_internals_vis_attrs [assembly]);
1628 if (internals_visible_attr_type == null)
1631 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1632 if (attrs.Length == 0) {
1633 assembly_internals_vis_attrs.Add (assembly, false);
1637 bool is_friend = false;
1639 AssemblyName this_name = CodeGen.Assembly.Name;
1640 byte [] this_token = this_name.GetPublicKeyToken ();
1641 foreach (InternalsVisibleToAttribute attr in attrs) {
1642 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1645 AssemblyName aname = null;
1647 aname = new AssemblyName (attr.AssemblyName);
1648 } catch (FileLoadException) {
1649 } catch (ArgumentException) {
1652 if (aname == null || aname.Name != this_name.Name)
1655 byte [] key_token = aname.GetPublicKeyToken ();
1656 if (key_token != null) {
1657 if (this_token.Length == 0) {
1658 // Same name, but assembly is not strongnamed
1659 Error_FriendAccessNameNotMatching (aname.FullName);
1663 if (!CompareKeyTokens (this_token, key_token))
1671 assembly_internals_vis_attrs.Add (assembly, is_friend);
1676 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1678 for (int i = 0; i < token1.Length; i++)
1679 if (token1 [i] != token2 [i])
1685 static void Error_FriendAccessNameNotMatching (string other_name)
1687 Report.Error (281, "Friend access was granted to `" + other_name +
1688 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1689 "'. Try adding a reference to `" + other_name +
1690 "' or change the output assembly name to match it");
1695 // Do the right thing when returning the element type of an
1696 // array type based on whether we are compiling corlib or not
1698 public static Type GetElementType (Type t)
1700 if (RootContext.StdLib)
1701 return t.GetElementType ();
1703 return TypeToCoreType (t.GetElementType ());
1707 /// This method is not implemented by MS runtime for dynamic types
1709 public static bool HasElementType (Type t)
1711 return t.IsArray || t.IsPointer || t.IsByRef;
1714 public static Type GetEnumUnderlyingType (Type t)
1716 t = DropGenericTypeArguments (t);
1717 Enum e = LookupTypeContainer (t) as Enum;
1719 return e.UnderlyingType;
1722 FieldInfo fi = GetPredefinedField (t, Enum.UnderlyingValueField, Location.Null);
1724 return TypeManager.int32_type;
1726 return TypeToCoreType (fi.FieldType);
1730 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1734 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1735 /// for anything which is dynamic, and we need this in a number of places,
1736 /// we register this information here, and use it afterwards.
1738 static public void RegisterMethod (MethodBase mb, Parameters ip)
1740 method_params.Add (mb, ip);
1743 static public ParameterData GetParameterData (MethodBase mb)
1745 ParameterData pd = (ParameterData)method_params [mb];
1748 if (mb.IsGenericMethod && !mb.IsGenericMethodDefinition) {
1749 MethodInfo mi = ((MethodInfo) mb).GetGenericMethodDefinition ();
1750 pd = GetParameterData (mi);
1751 if (mi.IsGenericMethod)
1752 pd = pd.InflateTypes (mi.GetGenericArguments (), mb.GetGenericArguments ());
1754 pd = pd.InflateTypes (mi.DeclaringType.GetGenericArguments (), mb.GetGenericArguments ());
1755 method_params.Add (mb, pd);
1759 if (mb.DeclaringType.Assembly == CodeGen.Assembly.Builder) {
1760 throw new InternalErrorException ("Parameters are not registered for method `{0}'",
1761 TypeManager.CSharpName (mb.DeclaringType) + "." + mb.Name);
1764 pd = new ReflectionParameters (mb);
1765 method_params.Add (mb, pd);
1770 public static ParameterData GetDelegateParameters (Type t)
1772 Delegate d = builder_to_declspace [t] as Delegate;
1774 return d.Parameters;
1776 MethodInfo invoke_mb = Delegate.GetInvokeMethod (t, t);
1777 return GetParameterData (invoke_mb);
1780 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1782 if (!method_overrides.Contains (override_method))
1783 method_overrides [override_method] = base_method;
1784 if (method_overrides [override_method] != base_method)
1785 throw new InternalErrorException ("Override mismatch: " + override_method);
1788 static public bool IsOverride (MethodBase m)
1790 m = DropGenericMethodArguments (m);
1792 return m.IsVirtual &&
1793 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1794 (m is MethodBuilder || method_overrides.Contains (m));
1797 static public MethodBase TryGetBaseDefinition (MethodBase m)
1799 m = DropGenericMethodArguments (m);
1801 return (MethodBase) method_overrides [m];
1805 /// Returns the argument types for an indexer based on its PropertyInfo
1807 /// For dynamic indexers, we use the compiler provided types, for
1808 /// indexers from existing assemblies we load them from GetParameters,
1809 /// and insert them into the cache
1811 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1813 if (indexer_arguments.Contains (indexer))
1814 return (Type []) indexer_arguments [indexer];
1815 else if (indexer is PropertyBuilder)
1816 // If we're a PropertyBuilder and not in the
1817 // `indexer_arguments' hash, then we're a property and
1819 return Type.EmptyTypes;
1821 ParameterInfo [] pi = indexer.GetIndexParameters ();
1822 // Property, not an indexer.
1824 return Type.EmptyTypes;
1826 Type [] types = new Type [c];
1828 for (int i = 0; i < c; i++)
1829 types [i] = pi [i].ParameterType;
1831 indexer_arguments.Add (indexer, types);
1836 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1838 fields.Add (fb, ic);
1841 public static IConstant GetConstant (FieldInfo fb)
1846 return (IConstant)fields [fb];
1849 public static void RegisterProperty (PropertyInfo pi, PropertyBase pb)
1851 propertybuilder_to_property.Add (pi, pb);
1854 public static PropertyBase GetProperty (PropertyInfo pi)
1856 return (PropertyBase)propertybuilder_to_property [pi];
1859 static public void RegisterFieldBase (FieldBuilder fb, FieldBase f)
1861 fieldbuilders_to_fields.Add (fb, f);
1865 // The return value can be null; This will be the case for
1866 // auxiliary FieldBuilders created by the compiler that have no
1867 // real field being declared on the source code
1869 static public FieldBase GetField (FieldInfo fb)
1872 fb = GetGenericFieldDefinition (fb);
1874 return (FieldBase) fieldbuilders_to_fields [fb];
1877 static public MethodInfo GetAddMethod (EventInfo ei)
1879 if (ei is MyEventBuilder) {
1880 return ((MyEventBuilder)ei).GetAddMethod (true);
1882 return ei.GetAddMethod (true);
1885 static public MethodInfo GetRemoveMethod (EventInfo ei)
1887 if (ei is MyEventBuilder) {
1888 return ((MyEventBuilder)ei).GetRemoveMethod (true);
1890 return ei.GetRemoveMethod (true);
1893 static public void RegisterEventField (EventInfo einfo, EventField e)
1896 events = new Hashtable ();
1898 events.Add (einfo, e);
1901 static public EventField GetEventField (EventInfo ei)
1906 return (EventField) events [ei];
1909 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1910 MethodBase set, Type[] args)
1912 indexer_arguments.Add (pb, args);
1917 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1919 Hashtable hash = new Hashtable ();
1920 return CheckStructCycles (tc, seen, hash);
1923 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1926 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc.TypeBuilder))
1930 // `seen' contains all types we've already visited.
1932 if (seen.Contains (tc))
1934 seen.Add (tc, null);
1936 if (tc.Fields == null)
1939 foreach (FieldBase field in tc.Fields) {
1940 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1943 Type ftype = field.FieldBuilder.FieldType;
1944 TypeContainer ftc = LookupTypeContainer (ftype);
1948 if (hash.Contains (ftc)) {
1949 Report.Error (523, tc.Location,
1950 "Struct member `{0}.{1}' of type `{2}' " +
1951 "causes a cycle in the struct layout",
1952 tc.Name, field.Name, ftc.Name);
1957 // `hash' contains all types in the current path.
1959 hash.Add (tc, null);
1961 bool ok = CheckStructCycles (ftc, seen, hash);
1968 if (!seen.Contains (ftc))
1969 seen.Add (ftc, null);
1976 /// Given an array of interface types, expand and eliminate repeated ocurrences
1977 /// of an interface.
1981 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1984 public static Type[] ExpandInterfaces (TypeExpr [] base_interfaces)
1986 ArrayList new_ifaces = new ArrayList ();
1988 foreach (TypeExpr iface in base_interfaces){
1989 Type itype = iface.Type;
1991 if (new_ifaces.Contains (itype))
1994 new_ifaces.Add (itype);
1996 Type [] implementing = GetInterfaces (itype);
1998 foreach (Type imp in implementing){
1999 if (!new_ifaces.Contains (imp))
2000 new_ifaces.Add (imp);
2003 Type [] ret = new Type [new_ifaces.Count];
2004 new_ifaces.CopyTo (ret, 0);
2008 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2010 ArrayList new_ifaces = new ArrayList ();
2012 foreach (Type itype in base_interfaces){
2013 if (new_ifaces.Contains (itype))
2016 new_ifaces.Add (itype);
2018 Type [] implementing = GetInterfaces (itype);
2020 foreach (Type imp in implementing){
2021 if (!new_ifaces.Contains (imp))
2022 new_ifaces.Add (imp);
2025 Type [] ret = new Type [new_ifaces.Count];
2026 new_ifaces.CopyTo (ret, 0);
2030 static PtrHashtable iface_cache = new PtrHashtable ();
2033 /// This function returns the interfaces in the type `t'. Works with
2034 /// both types and TypeBuilders.
2036 public static Type [] GetInterfaces (Type t)
2038 Type [] cached = iface_cache [t] as Type [];
2043 // The reason for catching the Array case is that Reflection.Emit
2044 // will not return a TypeBuilder for Array types of TypeBuilder types,
2045 // but will still throw an exception if we try to call GetInterfaces
2048 // Since the array interfaces are always constant, we return those for
2053 t = TypeManager.array_type;
2055 if ((t is TypeBuilder) || IsGenericType (t)) {
2056 Type [] base_ifaces;
2058 if (t.BaseType == null)
2059 base_ifaces = Type.EmptyTypes;
2061 base_ifaces = GetInterfaces (t.BaseType);
2063 if (IsGenericType (t))
2064 #if MS_COMPATIBLE && GMCS_SOURCE
2065 type_ifaces = t.GetGenericTypeDefinition().GetInterfaces ();
2067 type_ifaces = t.GetInterfaces ();
2070 type_ifaces = (Type []) builder_to_ifaces [t];
2071 if (type_ifaces == null || type_ifaces.Length == 0)
2072 type_ifaces = Type.EmptyTypes;
2074 int base_count = base_ifaces.Length;
2075 Type [] result = new Type [base_count + type_ifaces.Length];
2076 base_ifaces.CopyTo (result, 0);
2077 type_ifaces.CopyTo (result, base_count);
2079 iface_cache [t] = result;
2082 } else if (t is GenericTypeParameterBuilder){
2083 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2084 if (type_ifaces == null || type_ifaces.Length == 0)
2085 type_ifaces = Type.EmptyTypes;
2087 iface_cache [t] = type_ifaces;
2091 Type[] ifaces = t.GetInterfaces ();
2092 iface_cache [t] = ifaces;
2098 // gets the interfaces that are declared explicitly on t
2100 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2102 return (Type []) builder_to_ifaces [t];
2106 /// The following is used to check if a given type implements an interface.
2107 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2109 public static bool ImplementsInterface (Type t, Type iface)
2114 // FIXME OPTIMIZATION:
2115 // as soon as we hit a non-TypeBuiler in the interface
2116 // chain, we could return, as the `Type.GetInterfaces'
2117 // will return all the interfaces implement by the type
2121 interfaces = GetInterfaces (t);
2123 if (interfaces != null){
2124 foreach (Type i in interfaces){
2131 } while (t != null);
2136 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2138 // This is a custom version of Convert.ChangeType() which works
2139 // with the TypeBuilder defined types when compiling corlib.
2140 public static object ChangeType (object value, Type conversionType, out bool error)
2142 IConvertible convert_value = value as IConvertible;
2144 if (convert_value == null){
2151 // We must use Type.Equals() here since `conversionType' is
2152 // the TypeBuilder created version of a system type and not
2153 // the system type itself. You cannot use Type.GetTypeCode()
2154 // on such a type - it'd always return TypeCode.Object.
2157 // We cannot rely on build-in type conversions as they are
2158 // more limited than what C# supports.
2159 // See char -> float/decimal/double conversion
2164 if (conversionType.Equals (typeof (Boolean)))
2165 return (object)(convert_value.ToBoolean (nf_provider));
2166 if (conversionType.Equals (typeof (Byte)))
2167 return (object)(convert_value.ToByte (nf_provider));
2168 if (conversionType.Equals (typeof (Char)))
2169 return (object)(convert_value.ToChar (nf_provider));
2170 if (conversionType.Equals (typeof (DateTime)))
2171 return (object)(convert_value.ToDateTime (nf_provider));
2173 if (conversionType.Equals (decimal_type)) {
2174 if (convert_value.GetType () == TypeManager.char_type)
2175 return (decimal)convert_value.ToInt32 (nf_provider);
2176 return convert_value.ToDecimal (nf_provider);
2179 if (conversionType.Equals (typeof (Double))) {
2180 if (convert_value.GetType () == TypeManager.char_type)
2181 return (double)convert_value.ToInt32 (nf_provider);
2182 return convert_value.ToDouble (nf_provider);
2185 if (conversionType.Equals (typeof (Int16)))
2186 return (object)(convert_value.ToInt16 (nf_provider));
2187 if (conversionType.Equals (int32_type))
2188 return (object)(convert_value.ToInt32 (nf_provider));
2189 if (conversionType.Equals (int64_type))
2190 return (object)(convert_value.ToInt64 (nf_provider));
2191 if (conversionType.Equals (typeof (SByte)))
2192 return (object)(convert_value.ToSByte (nf_provider));
2194 if (conversionType.Equals (typeof (Single))) {
2195 if (convert_value.GetType () == TypeManager.char_type)
2196 return (float)convert_value.ToInt32 (nf_provider);
2197 return convert_value.ToSingle (nf_provider);
2200 if (conversionType.Equals (typeof (String)))
2201 return (object)(convert_value.ToString (nf_provider));
2202 if (conversionType.Equals (typeof (UInt16)))
2203 return (object)(convert_value.ToUInt16 (nf_provider));
2204 if (conversionType.Equals (typeof (UInt32)))
2205 return (object)(convert_value.ToUInt32 (nf_provider));
2206 if (conversionType.Equals (typeof (UInt64)))
2207 return (object)(convert_value.ToUInt64 (nf_provider));
2208 if (conversionType.Equals (typeof (Object)))
2209 return (object)(value);
2219 // When compiling with -nostdlib and the type is imported from an external assembly
2220 // SRE uses "wrong" type and we have to convert it to the right compiler instance.
2222 public static Type TypeToCoreType (Type t)
2224 if (RootContext.StdLib || t.Module != typeof (object).Module)
2227 TypeCode tc = Type.GetTypeCode (t);
2230 case TypeCode.Boolean:
2231 return TypeManager.bool_type;
2233 return TypeManager.byte_type;
2234 case TypeCode.SByte:
2235 return TypeManager.sbyte_type;
2237 return TypeManager.char_type;
2238 case TypeCode.Int16:
2239 return TypeManager.short_type;
2240 case TypeCode.UInt16:
2241 return TypeManager.ushort_type;
2242 case TypeCode.Int32:
2243 return TypeManager.int32_type;
2244 case TypeCode.UInt32:
2245 return TypeManager.uint32_type;
2246 case TypeCode.Int64:
2247 return TypeManager.int64_type;
2248 case TypeCode.UInt64:
2249 return TypeManager.uint64_type;
2250 case TypeCode.Single:
2251 return TypeManager.float_type;
2252 case TypeCode.Double:
2253 return TypeManager.double_type;
2254 case TypeCode.String:
2255 return TypeManager.string_type;
2256 case TypeCode.Decimal:
2257 return TypeManager.decimal_type;
2260 if (t == typeof (void))
2261 return TypeManager.void_type;
2262 if (t == typeof (object))
2263 return TypeManager.object_type;
2264 if (t == typeof (System.Type))
2265 return TypeManager.type_type;
2266 if (t == typeof (System.IntPtr))
2267 return TypeManager.intptr_type;
2268 if (t == typeof (System.UIntPtr))
2269 return TypeManager.uintptr_type;
2272 int dim = t.GetArrayRank ();
2273 t = GetElementType (t);
2274 return t.MakeArrayType (dim);
2277 t = GetElementType (t);
2278 return t.MakeByRefType ();
2281 t = GetElementType (t);
2282 return t.MakePointerType ();
2289 /// Utility function that can be used to probe whether a type
2290 /// is managed or not.
2292 public static bool VerifyUnManaged (Type t, Location loc)
2294 if (IsUnmanagedType (t))
2297 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2304 /// Returns the name of the indexer in a given type.
2307 /// The default is not always `Item'. The user can change this behaviour by
2308 /// using the IndexerNameAttribute in the container.
2309 /// For example, the String class indexer is named `Chars' not `Item'
2311 public static string IndexerPropertyName (Type t)
2313 t = DropGenericTypeArguments (t);
2314 if (t is TypeBuilder) {
2315 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2316 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2319 System.Attribute attr = System.Attribute.GetCustomAttribute (
2320 t, TypeManager.default_member_type);
2322 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2323 return dma.MemberName;
2326 return TypeContainer.DefaultIndexerName;
2329 static MethodInfo declare_local_method = null;
2331 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2333 if (declare_local_method == null){
2334 declare_local_method = typeof (ILGenerator).GetMethod (
2336 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2338 new Type [] { typeof (Type), typeof (bool)},
2340 if (declare_local_method == null){
2341 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2342 return ig.DeclareLocal (t);
2345 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2348 private static bool IsSignatureEqual (Type a, Type b)
2351 /// Consider the following example (bug #77674):
2353 /// public abstract class A
2355 /// public abstract T Foo<T> ();
2358 /// public abstract class B : A
2360 /// public override U Foo<T> ()
2361 /// { return default (U); }
2364 /// Here, `T' and `U' are method type parameters from different methods
2365 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2367 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2368 /// we need to do a signature based comparision and consider them equal.
2374 if (a.IsGenericParameter && b.IsGenericParameter &&
2375 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2376 return a.GenericParameterPosition == b.GenericParameterPosition;
2380 if (a.IsArray && b.IsArray) {
2381 if (a.GetArrayRank () != b.GetArrayRank ())
2384 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2387 if (a.IsByRef && b.IsByRef)
2388 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2391 if (a.IsGenericType && b.IsGenericType) {
2392 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2395 Type[] aargs = a.GetGenericArguments ();
2396 Type[] bargs = b.GetGenericArguments ();
2398 if (aargs.Length != bargs.Length)
2401 for (int i = 0; i < aargs.Length; i++) {
2402 if (!IsSignatureEqual (aargs [i], bargs [i]))
2414 // Returns whether the array of memberinfos contains the given method
2416 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2418 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2420 foreach (MethodBase method in array) {
2421 if (method.Name != new_method.Name)
2424 if (method is MethodInfo && new_method is MethodInfo &&
2426 TypeToCoreType (((MethodInfo) method).ReturnType),
2427 TypeToCoreType (((MethodInfo) new_method).ReturnType)))
2430 Type [] old_args = TypeManager.GetParameterData (method).Types;
2431 int old_count = old_args.Length;
2434 if (new_args.Length != old_count)
2437 for (i = 0; i < old_count; i++){
2438 if (!IsSignatureEqual (old_args [i], new_args [i]))
2451 // We copy methods from `new_members' into `target_list' if the signature
2452 // for the method from in the new list does not exist in the target_list
2454 // The name is assumed to be the same.
2456 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2458 if (target_list == null){
2459 target_list = new ArrayList ();
2461 foreach (MemberInfo mi in new_members){
2462 if (mi is MethodBase)
2463 target_list.Add (mi);
2468 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2469 target_list.CopyTo (target_array, 0);
2471 foreach (MemberInfo mi in new_members){
2472 MethodBase new_method = (MethodBase) mi;
2474 if (!ArrayContainsMethod (target_array, new_method))
2475 target_list.Add (new_method);
2482 // Tracks the generic parameters.
2484 static PtrHashtable builder_to_type_param;
2486 public static void AddTypeParameter (Type t, TypeParameter tparam)
2488 if (!builder_to_type_param.Contains (t))
2489 builder_to_type_param.Add (t, tparam);
2492 public static TypeParameter LookupTypeParameter (Type t)
2494 return (TypeParameter) builder_to_type_param [t];
2497 // This method always return false for non-generic compiler,
2498 // while Type.IsGenericParameter is returned if it is supported.
2499 public static bool IsGenericParameter (Type type)
2502 return type.IsGenericParameter;
2508 public static int GenericParameterPosition (Type type)
2511 return type.GenericParameterPosition;
2513 throw new InternalErrorException ("should not be called");
2517 public static bool IsGenericType (Type type)
2520 return type.IsGenericType;
2526 public static bool IsGenericTypeDefinition (Type type)
2529 return type.IsGenericTypeDefinition;
2535 public static bool ContainsGenericParameters (Type type)
2538 return type.ContainsGenericParameters;
2544 public static FieldInfo GetGenericFieldDefinition (FieldInfo fi)
2547 if (fi.DeclaringType.IsGenericTypeDefinition ||
2548 !fi.DeclaringType.IsGenericType)
2551 Type t = fi.DeclaringType.GetGenericTypeDefinition ();
2552 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2553 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2555 // TODO: use CodeGen.Module.Builder.ResolveField (fi.MetadataToken);
2556 foreach (FieldInfo f in t.GetFields (bf))
2557 if (f.MetadataToken == fi.MetadataToken)
2564 public static bool IsEqual (Type a, Type b)
2567 // MS BCL returns true even if enum types are different
2568 if (a.BaseType == TypeManager.enum_type || b.BaseType == TypeManager.enum_type)
2569 return a.FullName == b.FullName;
2575 if (a.IsGenericParameter && b.IsGenericParameter) {
2576 // TODO: needs more testing before cleaning up
2577 //if (a.DeclaringMethod != b.DeclaringMethod &&
2578 // (a.DeclaringMethod == null || b.DeclaringMethod == null))
2580 return a.GenericParameterPosition == b.GenericParameterPosition;
2583 if (a.IsArray && b.IsArray) {
2584 if (a.GetArrayRank () != b.GetArrayRank ())
2586 return IsEqual (a.GetElementType (), b.GetElementType ());
2589 if (a.IsByRef && b.IsByRef)
2590 return IsEqual (a.GetElementType (), b.GetElementType ());
2592 if (a.IsGenericType && b.IsGenericType) {
2593 Type adef = a.GetGenericTypeDefinition ();
2594 Type bdef = b.GetGenericTypeDefinition ();
2599 if (adef.IsEnum && bdef.IsEnum)
2602 Type[] aargs = a.GetGenericArguments ();
2603 Type[] bargs = b.GetGenericArguments ();
2605 if (aargs.Length != bargs.Length)
2608 for (int i = 0; i < aargs.Length; i++) {
2609 if (!IsEqual (aargs [i], bargs [i]))
2620 public static bool IsEqual (Type[] a, Type[] b)
2622 if (a.Length != b.Length)
2625 for (int i = 0; i < a.Length; ++i) {
2626 if (a [i] == null || b [i] == null) {
2633 if (!IsEqual (a [i], b [i]))
2640 public static Type DropGenericTypeArguments (Type t)
2643 if (!t.IsGenericType)
2645 // Micro-optimization: a generic typebuilder is always a generic type definition
2646 if (t is TypeBuilder)
2648 return t.GetGenericTypeDefinition ();
2654 public static MethodBase DropGenericMethodArguments (MethodBase m)
2657 if (m.IsGenericMethod)
2658 m = ((MethodInfo) m).GetGenericMethodDefinition ();
2660 Type t = m.DeclaringType;
2661 if (!t.IsGenericType || t.IsGenericTypeDefinition)
2664 t = t.GetGenericTypeDefinition ();
2665 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2666 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2669 // TODO: use CodeGen.Module.Builder.ResolveMethod ()
2673 if (m is ConstructorInfo) {
2674 foreach (ConstructorInfo c in t.GetConstructors (bf))
2675 if (c.MetadataToken == m.MetadataToken)
2678 foreach (MethodBase mb in t.GetMethods (bf))
2679 if (mb.MetadataToken == m.MetadataToken)
2687 public static Type[] GetGenericArguments (MethodBase mi)
2690 return mi.GetGenericArguments ();
2692 return Type.EmptyTypes;
2696 public static Type[] GetTypeArguments (Type t)
2699 DeclSpace tc = LookupDeclSpace (t);
2702 return Type.EmptyTypes;
2704 TypeParameter[] tparam = tc.TypeParameters;
2705 Type[] ret = new Type [tparam.Length];
2706 for (int i = 0; i < tparam.Length; i++) {
2707 ret [i] = tparam [i].Type;
2708 if (ret [i] == null)
2709 throw new InternalErrorException ();
2714 return t.GetGenericArguments ();
2716 throw new InternalErrorException ();
2720 public static GenericConstraints GetTypeParameterConstraints (Type t)
2723 if (!t.IsGenericParameter)
2724 throw new InvalidOperationException ();
2726 TypeParameter tparam = LookupTypeParameter (t);
2728 return tparam.GenericConstraints;
2730 return ReflectionConstraints.GetConstraints (t);
2732 throw new InternalErrorException ();
2736 public static bool HasGenericArguments (Type t)
2738 return GetNumberOfTypeArguments (t) > 0;
2741 public static int GetNumberOfTypeArguments (Type t)
2744 if (t.IsGenericParameter)
2746 DeclSpace tc = LookupDeclSpace (t);
2748 return tc.IsGeneric ? tc.CountTypeParameters : 0;
2750 return t.IsGenericType ? t.GetGenericArguments ().Length : 0;
2757 /// Check whether `type' and `parent' are both instantiations of the same
2758 /// generic type. Note that we do not check the type parameters here.
2760 public static bool IsInstantiationOfSameGenericType (Type type, Type parent)
2762 int tcount = GetNumberOfTypeArguments (type);
2763 int pcount = GetNumberOfTypeArguments (parent);
2765 if (tcount != pcount)
2768 type = DropGenericTypeArguments (type);
2769 parent = DropGenericTypeArguments (parent);
2771 return type.Equals (parent);
2775 /// Whether `mb' is a generic method definition.
2777 public static bool IsGenericMethodDefinition (MethodBase mb)
2780 if (mb.DeclaringType is TypeBuilder) {
2781 IMethodData method = (IMethodData) builder_to_method [mb];
2785 return method.GenericMethod != null;
2788 return mb.IsGenericMethodDefinition;
2795 /// Whether `mb' is a generic method.
2797 public static bool IsGenericMethod (MethodBase mb)
2800 return mb.IsGenericMethod;
2806 public static bool IsNullableType (Type t)
2809 return generic_nullable_type == DropGenericTypeArguments (t);
2815 public static bool IsNullableTypeOf (Type t, Type nullable)
2818 if (!IsNullableType (t))
2821 return GetTypeArguments (t) [0] == nullable;
2827 public static bool IsNullableValueType (Type t)
2830 if (!IsNullableType (t))
2833 return GetTypeArguments (t) [0].IsValueType;
2840 #region MemberLookup implementation
2843 // Whether we allow private members in the result (since FindMembers
2844 // uses NonPublic for both protected and private), we need to distinguish.
2847 internal class Closure {
2848 internal bool private_ok;
2850 // Who is invoking us and which type is being queried currently.
2851 internal Type invocation_type;
2852 internal Type qualifier_type;
2854 // The assembly that defines the type is that is calling us
2855 internal Assembly invocation_assembly;
2856 internal IList almost_match;
2858 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2860 if (invocation_type == null)
2863 if (is_static && qualifier_type == null)
2864 // It resolved from a simple name, so it should be visible.
2867 if (IsNestedChildOf (invocation_type, m.DeclaringType))
2870 for (Type t = invocation_type; t != null; t = t.DeclaringType) {
2871 if (!IsFamilyAccessible (t, m.DeclaringType))
2874 // Although a derived class can access protected members of its base class
2875 // it cannot do so through an instance of the base class (CS1540).
2876 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2877 if (is_static || qualifier_type == null ||
2878 IsInstantiationOfSameGenericType (t, qualifier_type) ||
2879 IsFamilyAccessible (qualifier_type, t))
2883 if (almost_match != null)
2884 almost_match.Add (m);
2890 // This filter filters by name + whether it is ok to include private
2891 // members in the search
2893 internal bool Filter (MemberInfo m, object filter_criteria)
2896 // Hack: we know that the filter criteria will always be in the
2897 // `closure' // fields.
2900 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2903 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2904 (invocation_type != null) &&
2905 IsPrivateAccessible (m.DeclaringType, invocation_type))
2909 // Ugly: we need to find out the type of `m', and depending
2910 // on this, tell whether we accept or not
2912 if (m is MethodBase){
2913 MethodBase mb = (MethodBase) m;
2914 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2916 if (ma == MethodAttributes.Public)
2919 if (ma == MethodAttributes.PrivateScope)
2922 if (ma == MethodAttributes.Private)
2923 return private_ok ||
2924 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2925 IsNestedChildOf (invocation_type, m.DeclaringType);
2927 if (TypeManager.IsThisOrFriendAssembly (mb.DeclaringType.Assembly)) {
2928 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2931 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2935 // Family, FamORAssem or FamANDAssem
2936 return CheckValidFamilyAccess (mb.IsStatic, m);
2939 if (m is FieldInfo){
2940 FieldInfo fi = (FieldInfo) m;
2941 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2943 if (fa == FieldAttributes.Public)
2946 if (fa == FieldAttributes.PrivateScope)
2949 if (fa == FieldAttributes.Private)
2950 return private_ok ||
2951 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2952 IsNestedChildOf (invocation_type, m.DeclaringType);
2954 if (TypeManager.IsThisOrFriendAssembly (fi.DeclaringType.Assembly)) {
2955 if ((fa == FieldAttributes.Assembly) ||
2956 (fa == FieldAttributes.FamORAssem))
2959 if ((fa == FieldAttributes.Assembly) ||
2960 (fa == FieldAttributes.FamANDAssem))
2964 // Family, FamORAssem or FamANDAssem
2965 return CheckValidFamilyAccess (fi.IsStatic, m);
2969 // EventInfos and PropertyInfos, return true because they lack
2970 // permission information, so we need to check later on the methods.
2976 static Closure closure = new Closure ();
2977 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2980 // Looks up a member called `name' in the `queried_type'. This lookup
2981 // is done by code that is contained in the definition for `invocation_type'
2982 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2984 // `invocation_type' is used to check whether we're allowed to access the requested
2985 // member wrt its protection level.
2987 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2988 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2989 // is B and qualifier_type is A). This is used to do the CS1540 check.
2991 // When resolving a SimpleName, `qualifier_type' is null.
2993 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2994 // the same than `queried_type' - except when we're being called from BaseAccess;
2995 // in this case, `invocation_type' is the current type and `queried_type' the base
2996 // type, so this'd normally trigger a CS1540.
2998 // The binding flags are `bf' and the kind of members being looked up are `mt'
3000 // The return value always includes private members which code in `invocation_type'
3001 // is allowed to access (using the specified `qualifier_type' if given); only use
3002 // BindingFlags.NonPublic to bypass the permission check.
3004 // The 'almost_match' argument is used for reporting error CS1540.
3006 // Returns an array of a single element for everything but Methods/Constructors
3007 // that might return multiple matches.
3009 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
3010 Type queried_type, MemberTypes mt,
3011 BindingFlags original_bf, string name, IList almost_match)
3013 Timer.StartTimer (TimerType.MemberLookup);
3015 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
3016 queried_type, mt, original_bf, name, almost_match);
3018 Timer.StopTimer (TimerType.MemberLookup);
3023 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
3024 Type queried_type, MemberTypes mt,
3025 BindingFlags original_bf, string name, IList almost_match)
3027 BindingFlags bf = original_bf;
3029 ArrayList method_list = null;
3030 Type current_type = queried_type;
3031 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
3032 bool skip_iface_check = true, used_cache = false;
3033 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
3035 closure.invocation_type = invocation_type;
3036 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
3037 closure.qualifier_type = qualifier_type;
3038 closure.almost_match = almost_match;
3040 // This is from the first time we find a method
3041 // in most cases, we do not actually find a method in the base class
3042 // so we can just ignore it, and save the arraylist allocation
3043 MemberInfo [] first_members_list = null;
3044 bool use_first_members_list = false;
3050 // `NonPublic' is lame, because it includes both protected and
3051 // private methods, so we need to control this behavior by
3052 // explicitly tracking if a private method is ok or not.
3054 // The possible cases are:
3055 // public, private and protected (internal does not come into the
3058 if ((invocation_type != null) &&
3059 ((invocation_type == current_type) ||
3060 IsNestedChildOf (invocation_type, current_type)) ||
3062 bf = original_bf | BindingFlags.NonPublic;
3066 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
3068 Timer.StopTimer (TimerType.MemberLookup);
3070 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
3072 Timer.StartTimer (TimerType.MemberLookup);
3075 // When queried for an interface type, the cache will automatically check all
3076 // inherited members, so we don't need to do this here. However, this only
3077 // works if we already used the cache in the first iteration of this loop.
3079 // If we used the cache in any further iteration, we can still terminate the
3080 // loop since the cache always looks in all base classes.
3086 skip_iface_check = false;
3088 if (current_type == TypeManager.object_type)
3091 current_type = current_type.BaseType;
3094 // This happens with interfaces, they have a null
3095 // basetype. Look members up in the Object class.
3097 if (current_type == null) {
3098 current_type = TypeManager.object_type;
3103 if (list.Length == 0)
3107 // Events and types are returned by both `static' and `instance'
3108 // searches, which means that our above FindMembers will
3109 // return two copies of the same.
3111 if (list.Length == 1 && !(list [0] is MethodBase)){
3116 // Multiple properties: we query those just to find out the indexer
3119 if (list [0] is PropertyInfo)
3123 // We found an event: the cache lookup returns both the event and
3124 // its private field.
3126 if (list [0] is EventInfo) {
3127 if ((list.Length == 2) && (list [1] is FieldInfo))
3128 return new MemberInfo [] { list [0] };
3134 // We found methods, turn the search into "method scan"
3138 if (first_members_list != null) {
3139 if (use_first_members_list) {
3140 method_list = CopyNewMethods (method_list, first_members_list);
3141 use_first_members_list = false;
3144 method_list = CopyNewMethods (method_list, list);
3146 first_members_list = list;
3147 use_first_members_list = true;
3148 mt &= (MemberTypes.Method | MemberTypes.Constructor);
3150 } while (searching);
3152 if (use_first_members_list)
3153 return first_members_list;
3155 if (method_list != null && method_list.Count > 0) {
3156 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3159 // This happens if we already used the cache in the first iteration, in this case
3160 // the cache already looked in all interfaces.
3162 if (skip_iface_check)
3166 // Interfaces do not list members they inherit, so we have to
3169 if (!queried_type.IsInterface)
3172 if (queried_type.IsArray)
3173 queried_type = TypeManager.array_type;
3175 Type [] ifaces = GetInterfaces (queried_type);
3179 foreach (Type itype in ifaces){
3182 x = MemberLookup (null, null, itype, mt, bf, name, null);
3190 const BindingFlags AllMembers = BindingFlags.Public | BindingFlags.NonPublic |
3191 BindingFlags.Static | BindingFlags.Instance |
3192 BindingFlags.DeclaredOnly;
3194 // Currently is designed to work with external types only
3195 public static PropertyInfo GetPropertyFromAccessor (MethodBase mb)
3197 if (!mb.IsSpecialName)
3200 string name = mb.Name;
3201 if (name.Length < 5)
3204 if (name [3] != '_')
3207 if (name.StartsWith ("get") || name.StartsWith ("set")) {
3208 MemberInfo[] pi = mb.DeclaringType.FindMembers (MemberTypes.Property, AllMembers,
3209 Type.FilterName, name.Substring (4));
3214 // This can happen when property is indexer (it can have same name but different parameters)
3215 foreach (PropertyInfo p in pi) {
3216 foreach (MethodInfo p_mi in p.GetAccessors (true)) {
3217 if (p_mi == mb || TypeManager.GetParameterData (p_mi).Equals (TypeManager.GetParameterData (mb)))
3226 // Currently is designed to work with external types only
3227 public static MemberInfo GetEventFromAccessor (MethodBase mb)
3229 if (!mb.IsSpecialName)
3232 string name = mb.Name;
3233 if (name.Length < 5)
3236 if (name.StartsWith ("add_"))
3237 return mb.DeclaringType.GetEvent (name.Substring (4), AllMembers);
3239 if (name.StartsWith ("remove_"))
3240 return mb.DeclaringType.GetEvent (name.Substring (7), AllMembers);
3245 // Tests whether external method is really special
3246 public static bool IsSpecialMethod (MethodBase mb)
3248 if (!mb.IsSpecialName)
3251 IMethodData md = TypeManager.GetMethod (mb);
3253 return (md is AbstractPropertyEventMethod || md is Operator);
3255 PropertyInfo pi = GetPropertyFromAccessor (mb);
3257 return IsValidProperty (pi);
3259 if (GetEventFromAccessor (mb) != null)
3262 string name = mb.Name;
3263 if (name.StartsWith ("op_"))
3264 return Operator.GetName (name) != null;
3269 // Tests whether imported property is valid C# property.
3270 // TODO: It seems to me that we should do a lot of sanity tests before
3271 // we accept property as C# property
3272 static bool IsValidProperty (PropertyInfo pi)
3274 MethodInfo get_method = pi.GetGetMethod (true);
3275 MethodInfo set_method = pi.GetSetMethod (true);
3276 if (get_method != null && set_method != null) {
3277 int g_count = get_method.GetParameters ().Length;
3278 int s_count = set_method.GetParameters ().Length;
3279 if (g_count + 1 != s_count)
3290 /// There is exactly one instance of this class per type.
3292 public sealed class TypeHandle : IMemberContainer {
3293 public readonly IMemberContainer BaseType;
3295 readonly int id = ++next_id;
3296 static int next_id = 0;
3298 static TypeHandle ()
3304 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3305 /// a TypeHandle yet, a new instance of it is created. This static method
3306 /// ensures that we'll only have one TypeHandle instance per type.
3308 private static TypeHandle GetTypeHandle (Type t)
3310 TypeHandle handle = (TypeHandle) type_hash [t];
3314 handle = new TypeHandle (t);
3315 type_hash.Add (t, handle);
3319 public static MemberCache GetMemberCache (Type t)
3321 return GetTypeHandle (t).MemberCache;
3324 public static void CleanUp ()
3329 public static void Reset ()
3331 type_hash = new PtrHashtable ();
3335 /// Returns the TypeHandle for TypeManager.object_type.
3337 public static IMemberContainer ObjectType {
3339 if (object_type != null)
3342 object_type = GetTypeHandle (TypeManager.object_type);
3349 /// Returns the TypeHandle for TypeManager.array_type.
3351 public static TypeHandle ArrayType {
3353 if (array_type != null)
3356 array_type = GetTypeHandle (TypeManager.array_type);
3362 private static PtrHashtable type_hash;
3364 private static TypeHandle object_type = null;
3365 private static TypeHandle array_type = null;
3368 private string full_name;
3369 private bool is_interface;
3370 private MemberCache member_cache;
3371 private MemberCache base_cache;
3373 private TypeHandle (Type type)
3376 full_name = type.FullName != null ? type.FullName : type.Name;
3377 if (type.BaseType != null) {
3378 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3379 BaseType = base_cache.Container;
3380 } else if (type.IsInterface)
3381 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3382 this.is_interface = type.IsInterface || TypeManager.IsGenericParameter (type);
3383 this.member_cache = new MemberCache (this);
3386 // IMemberContainer methods
3388 public string Name {
3400 public MemberCache BaseCache {
3406 public bool IsInterface {
3408 return is_interface;
3412 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3414 MemberInfo [] members;
3417 if (type is GenericTypeParameterBuilder)
3418 return MemberList.Empty;
3421 if (mt == MemberTypes.Event)
3422 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3424 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3427 if (members.Length == 0)
3428 return MemberList.Empty;
3430 Array.Reverse (members);
3431 return new MemberList (members);
3434 // IMemberFinder methods
3436 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3437 MemberFilter filter, object criteria)
3439 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3442 public MemberCache MemberCache {
3444 return member_cache;
3448 public override string ToString ()
3450 if (BaseType != null)
3451 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3453 return "TypeHandle (" + id + "," + Name + ")";