2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
6 // Marek Safar (marek.safar@seznam.cz)
8 // Licensed under the terms of the GNU GPL
10 // (C) 2001 Ximian, Inc (http://www.ximian.com)
15 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
16 // the behavior of the compilation. This can be removed if we rework
17 // the code to get a list of namespaces available.
19 #define SIMPLE_SPEEDUP
23 using System.Globalization;
24 using System.Collections;
25 using System.Reflection;
26 using System.Reflection.Emit;
28 using System.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 public Type activator_type;
116 static public Type generic_ilist_type;
117 static public Type generic_icollection_type;
118 static public Type generic_ienumerator_type;
119 static public Type generic_ienumerable_type;
120 static public Type generic_nullable_type;
125 static internal Type expression_type;
126 public static Type parameter_expression_type;
129 // Expressions representing the internal types. Used during declaration
132 static public TypeExpr system_object_expr, system_string_expr;
133 static public TypeExpr system_boolean_expr, system_decimal_expr;
134 static public TypeExpr system_single_expr, system_double_expr;
135 static public TypeExpr system_sbyte_expr, system_byte_expr;
136 static public TypeExpr system_int16_expr, system_uint16_expr;
137 static public TypeExpr system_int32_expr, system_uint32_expr;
138 static public TypeExpr system_int64_expr, system_uint64_expr;
139 static public TypeExpr system_char_expr, system_void_expr;
140 static public TypeExpr system_valuetype_expr;
141 static public TypeExpr system_intptr_expr;
142 public static TypeExpr expression_type_expr;
146 // These methods are called by code generated by the compiler
148 static public MethodInfo string_isinterned_string;
149 static public MethodInfo system_type_get_type_from_handle;
150 static public MethodInfo bool_movenext_void;
151 static public MethodInfo void_dispose_void;
152 static public MethodInfo void_monitor_enter_object;
153 static public MethodInfo void_monitor_exit_object;
154 static public MethodInfo void_initializearray_array_fieldhandle;
155 static public MethodInfo int_getlength_int;
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 static public MethodInfo activator_create_instance;
165 // The attribute constructors.
167 static public ConstructorInfo void_decimal_ctor_five_args;
168 static public ConstructorInfo void_decimal_ctor_int_arg;
169 static public ConstructorInfo default_member_ctor;
170 static public ConstructorInfo decimal_constant_attribute_ctor;
171 static internal ConstructorInfo struct_layout_attribute_ctor;
172 static public ConstructorInfo field_offset_attribute_ctor;
173 public static ConstructorInfo invalid_operation_exception_ctor;
175 static public CustomAttributeBuilder param_array_attr;
176 static CustomAttributeBuilder compiler_generated_attr;
179 static internal ConstructorInfo fixed_buffer_attr_ctor;
182 static internal CustomAttributeBuilder extension_attribute_attr;
184 static PtrHashtable builder_to_declspace;
186 static PtrHashtable builder_to_member_cache;
189 // Tracks the interfaces implemented by typebuilders. We only
190 // enter those who do implement or or more interfaces
192 static PtrHashtable builder_to_ifaces;
195 // Maps PropertyBuilder to a Type array that contains
196 // the arguments to the indexer
198 static Hashtable indexer_arguments;
201 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
203 static Hashtable method_params;
206 // A hash table from override methods to their base virtual method.
208 static Hashtable method_overrides;
211 // Keeps track of methods
214 static Hashtable builder_to_method;
217 // Contains all public types from referenced assemblies.
218 // This member is used only if CLS Compliance verification is required.
220 public static Hashtable AllClsTopLevelTypes;
222 static Hashtable fieldbuilders_to_fields;
223 static Hashtable propertybuilder_to_property;
224 static Hashtable fields;
225 static Hashtable events;
226 static PtrHashtable assembly_internals_vis_attrs;
228 public static void CleanUp ()
230 // Lets get everything clean so that we can collect before generating code
231 builder_to_declspace = null;
232 builder_to_member_cache = null;
233 builder_to_ifaces = null;
234 builder_to_type_param = null;
235 indexer_arguments = null;
236 method_params = null;
237 builder_to_method = null;
242 propertybuilder_to_property = null;
243 assembly_internals_vis_attrs = null;
245 TypeHandle.CleanUp ();
249 // These are expressions that represent some of the internal data types, used
252 static void InitExpressionTypes ()
254 system_object_expr = new TypeLookupExpression ("System.Object");
255 system_string_expr = new TypeLookupExpression ("System.String");
256 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
257 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
258 system_single_expr = new TypeLookupExpression ("System.Single");
259 system_double_expr = new TypeLookupExpression ("System.Double");
260 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
261 system_byte_expr = new TypeLookupExpression ("System.Byte");
262 system_int16_expr = new TypeLookupExpression ("System.Int16");
263 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
264 system_int32_expr = new TypeLookupExpression ("System.Int32");
265 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
266 system_int64_expr = new TypeLookupExpression ("System.Int64");
267 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
268 system_char_expr = new TypeLookupExpression ("System.Char");
269 system_void_expr = new TypeLookupExpression ("System.Void");
270 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
271 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
274 static TypeManager ()
278 InitExpressionTypes ();
281 static public void Reset ()
283 builder_to_declspace = new PtrHashtable ();
284 builder_to_member_cache = new PtrHashtable ();
285 builder_to_method = new PtrHashtable ();
286 builder_to_type_param = new PtrHashtable ();
287 method_params = new PtrHashtable ();
288 method_overrides = new PtrHashtable ();
289 indexer_arguments = new PtrHashtable ();
290 builder_to_ifaces = new PtrHashtable ();
292 fieldbuilders_to_fields = new Hashtable ();
293 propertybuilder_to_property = new Hashtable ();
294 fields = new Hashtable ();
295 type_hash = new DoubleHash ();
296 assembly_internals_vis_attrs = new PtrHashtable ();
298 // TODO: I am really bored by all this static stuff
299 string_isinterned_string =
300 system_type_get_type_from_handle =
303 void_monitor_enter_object =
304 void_monitor_exit_object =
305 void_initializearray_array_fieldhandle =
307 delegate_combine_delegate_delegate =
308 delegate_remove_delegate_delegate =
309 int_get_offset_to_string_data =
310 int_interlocked_compare_exchange =
311 methodbase_get_type_from_handle =
312 activator_create_instance = null;
314 ienumerator_getcurrent = null;
316 void_decimal_ctor_five_args =
317 void_decimal_ctor_int_arg =
318 default_member_ctor =
319 decimal_constant_attribute_ctor =
320 struct_layout_attribute_ctor =
321 field_offset_attribute_ctor =
322 invalid_operation_exception_ctor =
323 fixed_buffer_attr_ctor = null;
326 compiler_generated_attr =
327 extension_attribute_attr = 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 Type GetNestedType (Type t, string name)
540 if (!type_hash.Lookup (t, name, out ret)) {
541 ret = t.GetNestedType (name,
542 BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
543 type_hash.Insert (t, name, ret);
549 /// Fills static table with exported types from all referenced assemblies.
550 /// This information is required for CLS Compliance tests.
552 public static void LoadAllImportedTypes ()
554 AllClsTopLevelTypes = new Hashtable (1500);
555 foreach (Assembly a in RootNamespace.Global.Assemblies) {
556 foreach (Type t in a.GetExportedTypes ()) {
557 AllClsTopLevelTypes [t.FullName.ToLower (System.Globalization.CultureInfo.InvariantCulture)] = null;
562 public static bool NamespaceClash (string name, Location loc)
564 if (! RootNamespace.Global.IsNamespace (name))
567 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
572 /// Returns the C# name of a type if possible, or the full type name otherwise
574 static public string CSharpName (Type t)
579 if (t == typeof (ArglistParameter))
582 if (t == typeof (AnonymousMethod))
583 return "anonymous method";
585 return CSharpName (GetFullName (t));
588 static readonly char [] elements = new char [] { '*', '[' };
590 public static string CSharpName (string name)
592 if (name.Length > 10) {
594 case "System.Int32": return "int";
595 case "System.Int64": return "long";
596 case "System.String": return "string";
597 case "System.Boolean": return "bool";
598 case "System.Void": return "void";
599 case "System.Object": return "object";
600 case "System.UInt32": return "uint";
601 case "System.Int16": return "short";
602 case "System.UInt16": return "ushort";
603 case "System.UInt64": return "ulong";
604 case "System.Single": return "float";
605 case "System.Double": return "double";
606 case "System.Decimal": return "decimal";
607 case "System.Char": return "char";
608 case "System.Byte": return "byte";
609 case "System.SByte": return "sbyte";
612 int idx = name.IndexOfAny (elements, 10);
614 return CSharpName (name.Substring (0, idx)) + name.Substring (idx);
617 if (name [0] == AnonymousTypeClass.ClassNamePrefix [0] && name.StartsWith (AnonymousTypeClass.ClassNamePrefix))
618 return AnonymousTypeClass.SignatureForError;
620 return name.Replace ('+', '.');
623 static public string CSharpName (Type[] types)
625 if (types.Length == 0)
628 StringBuilder sb = new StringBuilder ();
629 for (int i = 0; i < types.Length; ++i) {
633 sb.Append (CSharpName (types [i]));
635 return sb.ToString ();
638 // Used for error reporting to show symbolic name instead of underlying value
639 public static string CSharpEnumValue (Type t, object value)
641 t = DropGenericTypeArguments (t);
642 Enum e = LookupDeclSpace (t) as Enum;
644 return System.Enum.GetName (t, value);
646 return e.GetDefinition (value).GetSignatureForError ();
650 /// Returns the signature of the method with full namespace classification
652 static public string GetFullNameSignature (MemberInfo mi)
654 PropertyInfo pi = mi as PropertyInfo;
656 MethodBase pmi = pi.GetGetMethod (true);
658 pmi = pi.GetSetMethod (true);
659 if (GetParameterData (pmi).Count > 0)
662 return (mi is MethodBase)
663 ? CSharpSignature (mi as MethodBase)
664 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
668 private static int GetFullName (Type t, StringBuilder sb)
672 if (!t.IsGenericType) {
673 sb.Append (t.FullName);
677 if (t.DeclaringType != null) {
678 pos = GetFullName (t.DeclaringType, sb);
680 } else if (t.Namespace != null && t.Namespace.Length != 0) {
681 sb.Append (t.Namespace);
684 sb.Append (RemoveGenericArity (t.Name));
686 Type[] this_args = GetTypeArguments (t);
688 if (this_args.Length < pos)
689 throw new InternalErrorException (
690 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
691 if (this_args.Length == pos)
696 sb.Append (CSharpName (this_args [pos++]));
697 if (pos == this_args.Length)
705 static string GetFullName (Type t)
708 string dimension = t.Name.Substring (t.Name.LastIndexOf ('['));
709 return GetFullName (t.GetElementType ()) + dimension;
712 if (IsNullableType (t) && !t.IsGenericTypeDefinition) {
713 t = GetTypeArguments (t)[0];
714 return CSharpName (t) + "?";
717 if (t.IsGenericParameter)
719 if (!t.IsGenericType)
722 StringBuilder sb = new StringBuilder ();
723 int pos = GetFullName (t, sb);
725 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
726 return sb.ToString ();
729 public static string GetFullName (Type t)
735 public static string RemoveGenericArity (string from)
737 int i = from.IndexOf ('`');
739 return from.Substring (0, i);
744 /// When we need to report accessors as well
746 static public string CSharpSignature (MethodBase mb)
748 return CSharpSignature (mb, false);
752 /// Returns the signature of the method
754 static public string CSharpSignature (MethodBase mb, bool show_accessor)
756 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
759 ParameterData iparams = GetParameterData (mb);
760 string parameters = iparams.GetSignatureForError ();
761 int accessor_end = 0;
763 if (!mb.IsConstructor && TypeManager.IsSpecialMethod (mb)) {
764 Operator.OpType ot = Operator.GetOperatorType (mb.Name);
765 if (ot != Operator.OpType.TOP) {
766 sig.Append ("operator ");
767 sig.Append (Operator.GetName (ot));
768 sig.Append (parameters);
769 return sig.ToString ();
772 bool is_getter = mb.Name.StartsWith ("get_");
773 bool is_setter = mb.Name.StartsWith ("set_");
774 if (is_getter || is_setter || mb.Name.StartsWith ("add_")) {
776 } else if (mb.Name.StartsWith ("remove_")) {
781 if (iparams.Count > (is_getter ? 0 : 1)) {
782 sig.Append ("this[");
784 sig.Append (parameters.Substring (1, parameters.Length - 2));
786 sig.Append (parameters.Substring (1, parameters.LastIndexOf (',') - 1));
789 sig.Append (mb.Name.Substring (accessor_end + 1));
792 if (mb.Name == ".ctor")
793 sig.Append (RemoveGenericArity (mb.DeclaringType.Name));
795 sig.Append (mb.Name);
798 if (TypeManager.IsGenericMethod (mb)) {
799 Type[] args = mb.GetGenericArguments ();
801 for (int i = 0; i < args.Length; i++) {
804 sig.Append (CSharpName (args [i]));
811 sig.Append (parameters);
814 if (show_accessor && accessor_end > 0) {
816 sig.Append (mb.Name.Substring (0, accessor_end));
819 return sig.ToString ();
822 public static string GetMethodName (MethodInfo m)
825 if (!IsGenericMethodDefinition (m) && !IsGenericMethod (m))
828 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
834 static public string CSharpSignature (EventInfo ei)
836 return CSharpName (ei.DeclaringType) + "." + ei.Name;
840 // Looks up a type, and aborts if it is not found. This is used
841 // by predefined types required by the compiler
843 public static Type CoreLookupType (string ns_name, string name, Kind type_kind, bool required)
846 if (RootContext.StdLib) {
847 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
848 expr = ns.Lookup (RootContext.ToplevelTypes, name, Location.Null);
851 Report.DisableReporting ();
853 TypeLookupExpression tle = new TypeLookupExpression (ns_name + "." + name);
854 expr = tle.ResolveAsTypeTerminal (RootContext.ToplevelTypes, false);
857 Report.EnableReporting ();
862 Report.Error (518, "The predefined type `{0}.{1}' is not defined or imported",
869 if (RootContext.StdLib || t == null || !required)
872 // TODO: All predefined imported types have to have correct signature
873 if (t.Module != CodeGen.Module.Builder)
876 DeclSpace ds = (DeclSpace)RootContext.ToplevelTypes.GetDefinition (t.FullName);
877 if (ds is Delegate) {
878 if (type_kind == Kind.Delegate)
881 TypeContainer tc = (TypeContainer)ds;
882 if (tc.Kind == type_kind)
886 Report.Error (520, ds.Location, "The predefined type `{0}.{1}' is not declared correctly",
891 static MemberInfo GetPredefinedMember (Type t, string name, MemberTypes mt, Location loc, params Type [] args)
893 const BindingFlags flags = instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly;
895 MemberInfo [] members = MemberLookup (null, null, t, mt, flags, name, null);
896 if (members != null) {
897 for (int i = 0; i < members.Length; ++i) {
898 MemberInfo member = members [i];
899 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor) {
900 MethodBase mb = member as MethodBase;
904 ParameterData pd = TypeManager.GetParameterData (mb);
905 if (IsEqual (pd.Types, args))
908 if (mt == MemberTypes.Field) {
909 FieldInfo fi = member as FieldInfo;
913 if (args.Length >= 1 && !IsEqual (TypeToCoreType (fi.FieldType), args [0]))
919 if (mt == MemberTypes.Property) {
920 PropertyInfo pi = member as PropertyInfo;
924 if (args.Length >= 1 && !IsEqual (TypeToCoreType (pi.PropertyType), args [0]))
932 string method_args = null;
933 if (mt == MemberTypes.Method || mt == MemberTypes.Constructor)
934 method_args = "(" + TypeManager.CSharpName (args) + ")";
936 Report.Error (656, loc, "The compiler required member `{0}.{1}{2}' could not be found or is inaccessible",
937 TypeManager.CSharpName (t), name, method_args);
943 // Returns the ConstructorInfo for "args"
945 public static ConstructorInfo GetPredefinedConstructor (Type t, Location loc, params Type [] args)
947 return (ConstructorInfo) GetPredefinedMember (t, ConstructorInfo.ConstructorName, MemberTypes.Constructor, loc, args);
951 // Returns the MethodInfo for a method named `name' defined
952 // in type `t' which takes arguments of types `args'
954 public static MethodInfo GetPredefinedMethod (Type t, string name, Location loc, params Type [] args)
956 return (MethodInfo)GetPredefinedMember (t, name, MemberTypes.Method, loc, args);
959 public static FieldInfo GetPredefinedField (Type t, string name, Location loc, params Type [] args)
961 return (FieldInfo) GetPredefinedMember (t, name, MemberTypes.Field, loc, args);
964 public static PropertyInfo GetPredefinedProperty (Type t, string name, Location loc, params Type [] args)
966 return (PropertyInfo) GetPredefinedMember (t, name, MemberTypes.Property, loc, args);
970 /// The types have to be initialized after the initial
971 /// population of the type has happened (for example, to
972 /// bootstrap the corlib.dll
974 public static bool InitCoreTypes ()
976 object_type = CoreLookupType ("System", "Object", Kind.Class, true);
977 system_object_expr.Type = object_type;
978 value_type = CoreLookupType ("System", "ValueType", Kind.Class, true);
979 system_valuetype_expr.Type = value_type;
980 attribute_type = CoreLookupType ("System", "Attribute", Kind.Class, true);
982 int32_type = CoreLookupType ("System", "Int32", Kind.Struct, true);
983 int64_type = CoreLookupType ("System", "Int64", Kind.Struct, true);
984 uint32_type = CoreLookupType ("System", "UInt32", Kind.Struct, true);
985 uint64_type = CoreLookupType ("System", "UInt64", Kind.Struct, true);
986 byte_type = CoreLookupType ("System", "Byte", Kind.Struct, true);
987 sbyte_type = CoreLookupType ("System", "SByte", Kind.Struct, true);
988 short_type = CoreLookupType ("System", "Int16", Kind.Struct, true);
989 ushort_type = CoreLookupType ("System", "UInt16", Kind.Struct, true);
991 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator", Kind.Interface, true);
992 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable", Kind.Interface, true);
993 idisposable_type = CoreLookupType ("System", "IDisposable", Kind.Interface, true);
995 // HACK: DefineType immediately resolves iterators (very wrong)
996 generic_ienumerator_type = CoreLookupType ("System.Collections.Generic", "IEnumerator`1", Kind.Interface, false);
998 char_type = CoreLookupType ("System", "Char", Kind.Struct, true);
999 string_type = CoreLookupType ("System", "String", Kind.Class, true);
1000 float_type = CoreLookupType ("System", "Single", Kind.Struct, true);
1001 double_type = CoreLookupType ("System", "Double", Kind.Struct, true);
1002 decimal_type = CoreLookupType ("System", "Decimal", Kind.Struct, true);
1003 bool_type = CoreLookupType ("System", "Boolean", Kind.Struct, true);
1004 intptr_type = CoreLookupType ("System", "IntPtr", Kind.Struct, true);
1005 uintptr_type = CoreLookupType ("System", "UIntPtr", Kind.Struct, true);
1007 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate", Kind.Class, true);
1008 delegate_type = CoreLookupType ("System", "Delegate", Kind.Class, true);
1010 enum_type = CoreLookupType ("System", "Enum", Kind.Class, true);
1011 array_type = CoreLookupType ("System", "Array", Kind.Class, true);
1012 void_type = CoreLookupType ("System", "Void", Kind.Struct, true);
1013 type_type = CoreLookupType ("System", "Type", Kind.Class, true);
1014 exception_type = CoreLookupType ("System", "Exception", Kind.Class, true);
1016 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle", Kind.Struct, true);
1017 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle", Kind.Struct, true);
1019 param_array_type = CoreLookupType ("System", "ParamArrayAttribute", Kind.Class, true);
1020 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute", Kind.Class, true);
1022 return Report.Errors == 0;
1026 // Initializes optional core types
1028 public static void InitOptionalCoreTypes ()
1030 void_ptr_type = GetPointerType (void_type);
1031 char_ptr_type = GetPointerType (char_type);
1033 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle", Kind.Struct, false);
1034 asynccallback_type = CoreLookupType ("System", "AsyncCallback", Kind.Delegate, false);
1035 iasyncresult_type = CoreLookupType ("System", "IAsyncResult", Kind.Interface, false);
1036 typed_reference_type = CoreLookupType ("System", "TypedReference", Kind.Struct, false);
1037 arg_iterator_type = CoreLookupType ("System", "ArgIterator", Kind.Struct, false);
1038 mbr_type = CoreLookupType ("System", "MarshalByRefObject", Kind.Class, false);
1041 // Optional attributes, used for error reporting only
1043 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute", Kind.Class, false);
1044 if (obsolete_attribute_type != null) {
1045 Class c = TypeManager.LookupClass (obsolete_attribute_type);
1050 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute", Kind.Class, false);
1051 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute", Kind.Class, false);
1052 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute", Kind.Class, false);
1053 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute", Kind.Class, false);
1054 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute", Kind.Class, false);
1055 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute", Kind.Class, false);
1056 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute", Kind.Class, false);
1057 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute", Kind.Class, false);
1058 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute", Kind.Class, false);
1059 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute", Kind.Class, false);
1060 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute", Kind.Class, false);
1061 assembly_version_attribute_type = CoreLookupType ("System.Reflection", "AssemblyVersionAttribute", Kind.Class, false);
1062 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute", Kind.Class, false);
1063 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute", Kind.Class, false);
1064 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute", Kind.Class, false);
1065 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute", Kind.Class, false);
1066 default_parameter_value_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultParameterValueAttribute", Kind.Class, false);
1069 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute", Kind.Class, false);
1070 type_forwarder_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "TypeForwardedToAttribute", Kind.Class, false);
1071 generic_ilist_type = CoreLookupType ("System.Collections.Generic", "IList`1", Kind.Interface, false);
1072 generic_icollection_type = CoreLookupType ("System.Collections.Generic", "ICollection`1", Kind.Interface, false);
1073 generic_ienumerable_type = CoreLookupType ("System.Collections.Generic", "IEnumerable`1", Kind.Interface, false);
1074 generic_nullable_type = CoreLookupType ("System", "Nullable`1", Kind.Struct, false);
1077 // Optional types which are used as types and for member lookup
1079 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute", Kind.Class, false);
1080 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers", Kind.Class, false);
1081 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute", Kind.Class, false);
1082 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute", Kind.Class, false);
1083 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute", Kind.Class, false);
1086 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute", Kind.Class, false);
1089 extension_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "ExtensionAttribute", Kind.Class, false);
1090 expression_type = CoreLookupType ("System.Linq.Expressions", "Expression`1", Kind.Class, false);
1092 if (!RootContext.StdLib) {
1094 // HACK: When building Mono corlib mcs uses loaded mscorlib which
1095 // has different predefined types and this method sets mscorlib types
1096 // to be same to avoid any type check errors.
1099 Type type = typeof (Type);
1100 Type [] system_4_type_arg = { type, type, type, type };
1102 MethodInfo set_corlib_type_builders =
1103 typeof (System.Reflection.Emit.AssemblyBuilder).GetMethod (
1104 "SetCorlibTypeBuilders", BindingFlags.NonPublic | BindingFlags.Instance, null,
1105 system_4_type_arg, null);
1107 if (set_corlib_type_builders != null) {
1108 object[] args = new object [4];
1109 args [0] = object_type;
1110 args [1] = value_type;
1111 args [2] = enum_type;
1112 args [3] = void_type;
1114 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1116 Report.Warning (-26, 3, "The compilation may fail due to missing `{0}.SetCorlibTypeBuilders({1})' method",
1117 TypeManager.CSharpName (typeof (System.Reflection.Emit.AssemblyBuilder)),
1118 TypeManager.CSharpName (system_4_type_arg));
1122 system_string_expr.Type = string_type;
1123 system_boolean_expr.Type = bool_type;
1124 system_decimal_expr.Type = decimal_type;
1125 system_single_expr.Type = float_type;
1126 system_double_expr.Type = double_type;
1127 system_sbyte_expr.Type = sbyte_type;
1128 system_byte_expr.Type = byte_type;
1129 system_int16_expr.Type = short_type;
1130 system_uint16_expr.Type = ushort_type;
1131 system_int32_expr.Type = int32_type;
1132 system_uint32_expr.Type = uint32_type;
1133 system_int64_expr.Type = int64_type;
1134 system_uint64_expr.Type = uint64_type;
1135 system_char_expr.Type = char_type;
1136 system_void_expr.Type = void_type;
1139 // These are only used for compare purposes
1141 anonymous_method_type = typeof (AnonymousMethod);
1142 null_type = typeof (NullLiteral);
1145 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1148 /// This is the "old", non-cache based FindMembers() function. We cannot use
1149 /// the cache here because there is no member name argument.
1151 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1152 MemberFilter filter, object criteria)
1154 #if MS_COMPATIBLE && GMCS_SOURCE
1155 if (t.IsGenericType)
1156 t = t.GetGenericTypeDefinition ();
1159 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1162 // `builder_to_declspace' contains all dynamic types.
1166 Timer.StartTimer (TimerType.FindMembers);
1167 list = decl.FindMembers (mt, bf, filter, criteria);
1168 Timer.StopTimer (TimerType.FindMembers);
1173 // We have to take care of arrays specially, because GetType on
1174 // a TypeBuilder array will return a Type, not a TypeBuilder,
1175 // and we can not call FindMembers on this type.
1178 #if MS_COMPATIBLE && GMCS_SOURCE
1181 t.IsSubclassOf (TypeManager.array_type))
1182 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1185 if (t is GenericTypeParameterBuilder) {
1186 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1188 Timer.StartTimer (TimerType.FindMembers);
1189 MemberList list = tparam.FindMembers (
1190 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1191 Timer.StopTimer (TimerType.FindMembers);
1197 // Since FindMembers will not lookup both static and instance
1198 // members, we emulate this behaviour here.
1200 if ((bf & instance_and_static) == instance_and_static){
1201 MemberInfo [] i_members = t.FindMembers (
1202 mt, bf & ~BindingFlags.Static, filter, criteria);
1204 int i_len = i_members.Length;
1206 MemberInfo one = i_members [0];
1209 // If any of these are present, we are done!
1211 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1212 return new MemberList (i_members);
1215 MemberInfo [] s_members = t.FindMembers (
1216 mt, bf & ~BindingFlags.Instance, filter, criteria);
1218 int s_len = s_members.Length;
1219 if (i_len > 0 || s_len > 0)
1220 return new MemberList (i_members, s_members);
1223 return new MemberList (i_members);
1225 return new MemberList (s_members);
1229 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1234 /// This method is only called from within MemberLookup. It tries to use the member
1235 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1236 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1237 /// our return value will already contain all inherited members and the caller don't need
1238 /// to check base classes and interfaces anymore.
1240 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1241 string name, out bool used_cache)
1246 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1247 // and we can ask the DeclSpace for the MemberCache.
1250 if (t.Assembly == CodeGen.Assembly.Builder) {
1251 if (t.IsGenericParameter) {
1252 TypeParameter tparam = (TypeParameter) builder_to_type_param[t];
1255 if (tparam.MemberCache == null)
1256 return new MemberInfo[0];
1258 return tparam.MemberCache.FindMembers (
1259 mt, bf, name, FilterWithClosure_delegate, null);
1262 if (t.IsGenericType && !t.IsGenericTypeDefinition)
1263 t = t.GetGenericTypeDefinition ();
1265 if (t is TypeBuilder) {
1267 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1268 cache = decl.MemberCache;
1271 // If this DeclSpace has a MemberCache, use it.
1274 if (cache != null) {
1276 return cache.FindMembers (
1277 mt, bf, name, FilterWithClosure_delegate, null);
1280 // If there is no MemberCache, we need to use the "normal" FindMembers.
1281 // Note, this is a VERY uncommon route!
1284 Timer.StartTimer (TimerType.FindMembers);
1285 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1286 FilterWithClosure_delegate, name);
1287 Timer.StopTimer (TimerType.FindMembers);
1289 return (MemberInfo []) list;
1293 // We have to take care of arrays specially, because GetType on
1294 // a TypeBuilder array will return a Type, not a TypeBuilder,
1295 // and we can not call FindMembers on this type.
1299 return TypeHandle.ArrayType.MemberCache.FindMembers (
1300 mt, bf, name, FilterWithClosure_delegate, null);
1304 if (t is GenericTypeParameterBuilder) {
1305 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1308 if (tparam.MemberCache == null)
1309 return new MemberInfo [0];
1311 return tparam.MemberCache.FindMembers (
1312 mt, bf, name, FilterWithClosure_delegate, null);
1316 if (IsGenericType (t) && (mt == MemberTypes.NestedType)) {
1318 // This happens if we're resolving a class'es base class and interfaces
1319 // in TypeContainer.DefineType(). At this time, the types aren't
1320 // populated yet, so we can't use the cache.
1322 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1323 FilterWithClosure_delegate, name);
1329 // This call will always succeed. There is exactly one TypeHandle instance per
1330 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1331 // the corresponding MemberCache.
1333 cache = TypeHandle.GetMemberCache (t);
1336 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1339 public static bool IsBuiltinType (Type t)
1341 t = TypeToCoreType (t);
1342 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1343 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1344 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1345 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1352 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1353 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1355 public static bool IsPrimitiveType (Type t)
1357 return (t == int32_type || t == uint32_type ||
1358 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1359 t == char_type || t == short_type || t == bool_type ||
1360 t == sbyte_type || t == byte_type || t == ushort_type);
1363 public static bool IsDelegateType (Type t)
1366 if (t.IsGenericParameter)
1370 if (t == TypeManager.delegate_type)
1373 t = DropGenericTypeArguments (t);
1374 return IsSubclassOf (t, TypeManager.delegate_type);
1377 public static bool IsEnumType (Type t)
1379 t = DropGenericTypeArguments (t);
1380 return t.BaseType == TypeManager.enum_type;
1383 public static bool IsBuiltinOrEnum (Type t)
1385 if (IsBuiltinType (t))
1394 public static bool IsAttributeType (Type t)
1396 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1399 static Stack unmanaged_enclosing_types = new Stack (4);
1402 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1404 public static bool IsUnmanagedType (Type t)
1406 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1407 if (unmanaged_enclosing_types.Contains (t))
1410 // builtins that are not unmanaged types
1411 if (t == TypeManager.object_type || t == TypeManager.string_type)
1414 if (IsGenericType (t) || IsGenericParameter (t))
1417 if (IsBuiltinOrEnum (t))
1420 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1424 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1428 if (!IsValueType (t))
1432 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1433 if (p.IsGenericTypeDefinition)
1438 unmanaged_enclosing_types.Push (t);
1442 if (t is TypeBuilder) {
1443 TypeContainer tc = LookupTypeContainer (t);
1444 if (tc.Fields != null){
1445 foreach (FieldBase f in tc.Fields){
1446 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1447 if ((f.ModFlags & Modifiers.STATIC) != 0)
1449 if (f.MemberType == null)
1451 if (!IsUnmanagedType (f.MemberType)){
1452 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1458 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1460 foreach (FieldInfo f in fields){
1461 if (!IsUnmanagedType (f.FieldType)){
1462 Report.SymbolRelatedToPreviousError (f);
1468 unmanaged_enclosing_types.Pop ();
1473 public static bool IsReferenceType (Type t)
1475 if (TypeManager.IsGenericParameter (t)) {
1476 GenericConstraints constraints = TypeManager.GetTypeParameterConstraints (t);
1477 if (constraints == null)
1480 return constraints.IsReferenceType;
1483 if (t == TypeManager.null_type)
1486 return !t.IsValueType;
1489 public static bool IsValueType (Type t)
1491 return t.IsValueType || IsGenericParameter (t);
1494 public static bool IsInterfaceType (Type t)
1496 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1500 return tc.Kind == Kind.Interface;
1503 public static bool IsSubclassOf (Type type, Type base_type)
1505 TypeParameter tparam = LookupTypeParameter (type);
1506 TypeParameter pparam = LookupTypeParameter (base_type);
1508 if ((tparam != null) && (pparam != null)) {
1509 if (tparam == pparam)
1512 return tparam.IsSubclassOf (base_type);
1515 #if MS_COMPATIBLE && GMCS_SOURCE
1516 if (type.IsGenericType)
1517 type = type.GetGenericTypeDefinition ();
1520 if (type.IsSubclassOf (base_type))
1524 if (IsEqual (type, base_type))
1527 type = type.BaseType;
1528 } while (type != null);
1533 public static bool IsPrivateAccessible (Type type, Type parent)
1538 if (type.Equals (parent))
1541 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1544 public static bool IsFamilyAccessible (Type type, Type parent)
1546 TypeParameter tparam = LookupTypeParameter (type);
1547 TypeParameter pparam = LookupTypeParameter (parent);
1549 if ((tparam != null) && (pparam != null)) {
1550 if (tparam == pparam)
1553 return tparam.IsSubclassOf (parent);
1557 if (IsInstantiationOfSameGenericType (type, parent))
1560 type = type.BaseType;
1561 } while (type != null);
1567 // Checks whether `type' is a subclass or nested child of `base_type'.
1569 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1572 if (IsFamilyAccessible (type, base_type))
1575 // Handle nested types.
1576 type = type.DeclaringType;
1577 } while (type != null);
1583 // Checks whether `type' is a nested child of `parent'.
1585 public static bool IsNestedChildOf (Type type, Type parent)
1590 type = DropGenericTypeArguments (type);
1591 parent = DropGenericTypeArguments (parent);
1593 if (IsEqual (type, parent))
1596 type = type.DeclaringType;
1597 while (type != null) {
1598 if (IsEqual (type, parent))
1601 type = type.DeclaringType;
1608 // Checks whether `extern_type' is friend of the output assembly
1610 public static bool IsThisOrFriendAssembly (Assembly assembly)
1612 if (assembly == CodeGen.Assembly.Builder)
1615 if (assembly_internals_vis_attrs.Contains (assembly))
1616 return (bool)(assembly_internals_vis_attrs [assembly]);
1618 if (internals_visible_attr_type == null)
1621 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1622 if (attrs.Length == 0) {
1623 assembly_internals_vis_attrs.Add (assembly, false);
1627 bool is_friend = false;
1629 AssemblyName this_name = CodeGen.Assembly.Name;
1630 byte [] this_token = this_name.GetPublicKeyToken ();
1631 foreach (InternalsVisibleToAttribute attr in attrs) {
1632 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1635 AssemblyName aname = null;
1637 aname = new AssemblyName (attr.AssemblyName);
1638 } catch (FileLoadException) {
1639 } catch (ArgumentException) {
1642 if (aname == null || aname.Name != this_name.Name)
1645 byte [] key_token = aname.GetPublicKeyToken ();
1646 if (key_token != null) {
1647 if (this_token.Length == 0) {
1648 // Same name, but assembly is not strongnamed
1649 Error_FriendAccessNameNotMatching (aname.FullName);
1653 if (!CompareKeyTokens (this_token, key_token))
1661 assembly_internals_vis_attrs.Add (assembly, is_friend);
1666 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1668 for (int i = 0; i < token1.Length; i++)
1669 if (token1 [i] != token2 [i])
1675 static void Error_FriendAccessNameNotMatching (string other_name)
1677 Report.Error (281, "Friend access was granted to `" + other_name +
1678 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1679 "'. Try adding a reference to `" + other_name +
1680 "' or change the output assembly name to match it");
1685 // Do the right thing when returning the element type of an
1686 // array type based on whether we are compiling corlib or not
1688 public static Type GetElementType (Type t)
1690 if (RootContext.StdLib)
1691 return t.GetElementType ();
1693 return TypeToCoreType (t.GetElementType ());
1697 /// This method is not implemented by MS runtime for dynamic types
1699 public static bool HasElementType (Type t)
1701 return t.IsArray || t.IsPointer || t.IsByRef;
1704 public static Type GetEnumUnderlyingType (Type t)
1706 t = DropGenericTypeArguments (t);
1707 Enum e = LookupTypeContainer (t) as Enum;
1709 return e.UnderlyingType;
1712 FieldInfo fi = GetPredefinedField (t, Enum.UnderlyingValueField, Location.Null);
1714 return TypeManager.int32_type;
1716 return TypeToCoreType (fi.FieldType);
1720 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1724 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1725 /// for anything which is dynamic, and we need this in a number of places,
1726 /// we register this information here, and use it afterwards.
1728 static public void RegisterMethod (MethodBase mb, Parameters ip)
1730 method_params.Add (mb, ip);
1733 static public ParameterData GetParameterData (MethodBase mb)
1735 ParameterData pd = (ParameterData)method_params [mb];
1738 if (mb.IsGenericMethod && !mb.IsGenericMethodDefinition) {
1739 MethodInfo mi = ((MethodInfo) mb).GetGenericMethodDefinition ();
1740 pd = GetParameterData (mi);
1741 if (mi.IsGenericMethod)
1742 pd = pd.InflateTypes (mi.GetGenericArguments (), mb.GetGenericArguments ());
1744 pd = pd.InflateTypes (mi.DeclaringType.GetGenericArguments (), mb.GetGenericArguments ());
1745 method_params.Add (mb, pd);
1749 if (mb.DeclaringType.Assembly == CodeGen.Assembly.Builder) {
1750 throw new InternalErrorException ("Parameters are not registered for method `{0}'",
1751 TypeManager.CSharpName (mb.DeclaringType) + "." + mb.Name);
1754 pd = new ReflectionParameters (mb);
1755 method_params.Add (mb, pd);
1760 public static ParameterData GetDelegateParameters (Type t)
1762 Delegate d = builder_to_declspace [t] as Delegate;
1764 return d.Parameters;
1766 MethodInfo invoke_mb = Delegate.GetInvokeMethod (t, t);
1767 return GetParameterData (invoke_mb);
1770 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1772 if (!method_overrides.Contains (override_method))
1773 method_overrides [override_method] = base_method;
1774 if (method_overrides [override_method] != base_method)
1775 throw new InternalErrorException ("Override mismatch: " + override_method);
1778 static public bool IsOverride (MethodBase m)
1780 m = DropGenericMethodArguments (m);
1782 return m.IsVirtual &&
1783 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1784 (m is MethodBuilder || method_overrides.Contains (m));
1787 static public MethodBase TryGetBaseDefinition (MethodBase m)
1789 m = DropGenericMethodArguments (m);
1791 return (MethodBase) method_overrides [m];
1795 /// Returns the argument types for an indexer based on its PropertyInfo
1797 /// For dynamic indexers, we use the compiler provided types, for
1798 /// indexers from existing assemblies we load them from GetParameters,
1799 /// and insert them into the cache
1801 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1803 if (indexer_arguments.Contains (indexer))
1804 return (Type []) indexer_arguments [indexer];
1805 else if (indexer is PropertyBuilder)
1806 // If we're a PropertyBuilder and not in the
1807 // `indexer_arguments' hash, then we're a property and
1809 return Type.EmptyTypes;
1811 ParameterInfo [] pi = indexer.GetIndexParameters ();
1812 // Property, not an indexer.
1814 return Type.EmptyTypes;
1816 Type [] types = new Type [c];
1818 for (int i = 0; i < c; i++)
1819 types [i] = pi [i].ParameterType;
1821 indexer_arguments.Add (indexer, types);
1826 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1828 fields.Add (fb, ic);
1831 public static IConstant GetConstant (FieldInfo fb)
1836 return (IConstant)fields [fb];
1839 public static void RegisterProperty (PropertyInfo pi, PropertyBase pb)
1841 propertybuilder_to_property.Add (pi, pb);
1844 public static PropertyBase GetProperty (PropertyInfo pi)
1846 return (PropertyBase)propertybuilder_to_property [pi];
1849 static public void RegisterFieldBase (FieldBuilder fb, FieldBase f)
1851 fieldbuilders_to_fields.Add (fb, f);
1855 // The return value can be null; This will be the case for
1856 // auxiliary FieldBuilders created by the compiler that have no
1857 // real field being declared on the source code
1859 static public FieldBase GetField (FieldInfo fb)
1862 fb = GetGenericFieldDefinition (fb);
1864 return (FieldBase) fieldbuilders_to_fields [fb];
1867 static public MethodInfo GetAddMethod (EventInfo ei)
1869 if (ei is MyEventBuilder) {
1870 return ((MyEventBuilder)ei).GetAddMethod (true);
1872 return ei.GetAddMethod (true);
1875 static public MethodInfo GetRemoveMethod (EventInfo ei)
1877 if (ei is MyEventBuilder) {
1878 return ((MyEventBuilder)ei).GetRemoveMethod (true);
1880 return ei.GetRemoveMethod (true);
1883 static public void RegisterEventField (EventInfo einfo, EventField e)
1886 events = new Hashtable ();
1888 events.Add (einfo, e);
1891 static public EventField GetEventField (EventInfo ei)
1896 return (EventField) events [ei];
1899 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1900 MethodBase set, Type[] args)
1902 indexer_arguments.Add (pb, args);
1907 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1909 Hashtable hash = new Hashtable ();
1910 return CheckStructCycles (tc, seen, hash);
1913 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1916 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc.TypeBuilder))
1920 // `seen' contains all types we've already visited.
1922 if (seen.Contains (tc))
1924 seen.Add (tc, null);
1926 if (tc.Fields == null)
1929 foreach (FieldBase field in tc.Fields) {
1930 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1933 Type ftype = field.FieldBuilder.FieldType;
1934 TypeContainer ftc = LookupTypeContainer (ftype);
1938 if (hash.Contains (ftc)) {
1939 Report.Error (523, tc.Location,
1940 "Struct member `{0}.{1}' of type `{2}' " +
1941 "causes a cycle in the struct layout",
1942 tc.Name, field.Name, ftc.Name);
1947 // `hash' contains all types in the current path.
1949 hash.Add (tc, null);
1951 bool ok = CheckStructCycles (ftc, seen, hash);
1958 if (!seen.Contains (ftc))
1959 seen.Add (ftc, null);
1966 /// Given an array of interface types, expand and eliminate repeated ocurrences
1967 /// of an interface.
1971 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1974 public static Type[] ExpandInterfaces (TypeExpr [] base_interfaces)
1976 ArrayList new_ifaces = new ArrayList ();
1978 foreach (TypeExpr iface in base_interfaces){
1979 Type itype = iface.Type;
1981 if (new_ifaces.Contains (itype))
1984 new_ifaces.Add (itype);
1986 Type [] implementing = GetInterfaces (itype);
1988 foreach (Type imp in implementing){
1989 if (!new_ifaces.Contains (imp))
1990 new_ifaces.Add (imp);
1993 Type [] ret = new Type [new_ifaces.Count];
1994 new_ifaces.CopyTo (ret, 0);
1998 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2000 ArrayList new_ifaces = new ArrayList ();
2002 foreach (Type itype in base_interfaces){
2003 if (new_ifaces.Contains (itype))
2006 new_ifaces.Add (itype);
2008 Type [] implementing = GetInterfaces (itype);
2010 foreach (Type imp in implementing){
2011 if (!new_ifaces.Contains (imp))
2012 new_ifaces.Add (imp);
2015 Type [] ret = new Type [new_ifaces.Count];
2016 new_ifaces.CopyTo (ret, 0);
2020 static PtrHashtable iface_cache = new PtrHashtable ();
2023 /// This function returns the interfaces in the type `t'. Works with
2024 /// both types and TypeBuilders.
2026 public static Type [] GetInterfaces (Type t)
2028 Type [] cached = iface_cache [t] as Type [];
2033 // The reason for catching the Array case is that Reflection.Emit
2034 // will not return a TypeBuilder for Array types of TypeBuilder types,
2035 // but will still throw an exception if we try to call GetInterfaces
2038 // Since the array interfaces are always constant, we return those for
2043 t = TypeManager.array_type;
2045 if ((t is TypeBuilder) || IsGenericType (t)) {
2046 Type [] base_ifaces;
2048 if (t.BaseType == null)
2049 base_ifaces = Type.EmptyTypes;
2051 base_ifaces = GetInterfaces (t.BaseType);
2053 if (IsGenericType (t))
2054 #if MS_COMPATIBLE && GMCS_SOURCE
2055 type_ifaces = t.GetGenericTypeDefinition().GetInterfaces ();
2057 type_ifaces = t.GetInterfaces ();
2060 type_ifaces = (Type []) builder_to_ifaces [t];
2061 if (type_ifaces == null || type_ifaces.Length == 0)
2062 type_ifaces = Type.EmptyTypes;
2064 int base_count = base_ifaces.Length;
2065 Type [] result = new Type [base_count + type_ifaces.Length];
2066 base_ifaces.CopyTo (result, 0);
2067 type_ifaces.CopyTo (result, base_count);
2069 iface_cache [t] = result;
2072 } else if (t is GenericTypeParameterBuilder){
2073 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2074 if (type_ifaces == null || type_ifaces.Length == 0)
2075 type_ifaces = Type.EmptyTypes;
2077 iface_cache [t] = type_ifaces;
2081 Type[] ifaces = t.GetInterfaces ();
2082 iface_cache [t] = ifaces;
2088 // gets the interfaces that are declared explicitly on t
2090 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2092 return (Type []) builder_to_ifaces [t];
2096 /// The following is used to check if a given type implements an interface.
2097 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2099 public static bool ImplementsInterface (Type t, Type iface)
2104 // FIXME OPTIMIZATION:
2105 // as soon as we hit a non-TypeBuiler in the interface
2106 // chain, we could return, as the `Type.GetInterfaces'
2107 // will return all the interfaces implement by the type
2111 interfaces = GetInterfaces (t);
2113 if (interfaces != null){
2114 foreach (Type i in interfaces){
2121 } while (t != null);
2126 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2128 // This is a custom version of Convert.ChangeType() which works
2129 // with the TypeBuilder defined types when compiling corlib.
2130 public static object ChangeType (object value, Type conversionType, out bool error)
2132 IConvertible convert_value = value as IConvertible;
2134 if (convert_value == null){
2141 // We must use Type.Equals() here since `conversionType' is
2142 // the TypeBuilder created version of a system type and not
2143 // the system type itself. You cannot use Type.GetTypeCode()
2144 // on such a type - it'd always return TypeCode.Object.
2147 // We cannot rely on build-in type conversions as they are
2148 // more limited than what C# supports.
2149 // See char -> float/decimal/double conversion
2154 if (conversionType.Equals (typeof (Boolean)))
2155 return (object)(convert_value.ToBoolean (nf_provider));
2156 if (conversionType.Equals (typeof (Byte)))
2157 return (object)(convert_value.ToByte (nf_provider));
2158 if (conversionType.Equals (typeof (Char)))
2159 return (object)(convert_value.ToChar (nf_provider));
2160 if (conversionType.Equals (typeof (DateTime)))
2161 return (object)(convert_value.ToDateTime (nf_provider));
2163 if (conversionType.Equals (decimal_type)) {
2164 if (convert_value.GetType () == TypeManager.char_type)
2165 return (decimal)convert_value.ToInt32 (nf_provider);
2166 return convert_value.ToDecimal (nf_provider);
2169 if (conversionType.Equals (typeof (Double))) {
2170 if (convert_value.GetType () == TypeManager.char_type)
2171 return (double)convert_value.ToInt32 (nf_provider);
2172 return convert_value.ToDouble (nf_provider);
2175 if (conversionType.Equals (typeof (Int16)))
2176 return (object)(convert_value.ToInt16 (nf_provider));
2177 if (conversionType.Equals (int32_type))
2178 return (object)(convert_value.ToInt32 (nf_provider));
2179 if (conversionType.Equals (int64_type))
2180 return (object)(convert_value.ToInt64 (nf_provider));
2181 if (conversionType.Equals (typeof (SByte)))
2182 return (object)(convert_value.ToSByte (nf_provider));
2184 if (conversionType.Equals (typeof (Single))) {
2185 if (convert_value.GetType () == TypeManager.char_type)
2186 return (float)convert_value.ToInt32 (nf_provider);
2187 return convert_value.ToSingle (nf_provider);
2190 if (conversionType.Equals (typeof (String)))
2191 return (object)(convert_value.ToString (nf_provider));
2192 if (conversionType.Equals (typeof (UInt16)))
2193 return (object)(convert_value.ToUInt16 (nf_provider));
2194 if (conversionType.Equals (typeof (UInt32)))
2195 return (object)(convert_value.ToUInt32 (nf_provider));
2196 if (conversionType.Equals (typeof (UInt64)))
2197 return (object)(convert_value.ToUInt64 (nf_provider));
2198 if (conversionType.Equals (typeof (Object)))
2199 return (object)(value);
2209 // When compiling with -nostdlib and the type is imported from an external assembly
2210 // SRE uses "wrong" type and we have to convert it to the right compiler instance.
2212 public static Type TypeToCoreType (Type t)
2214 if (RootContext.StdLib || t.Module != typeof (object).Module)
2217 TypeCode tc = Type.GetTypeCode (t);
2220 case TypeCode.Boolean:
2221 return TypeManager.bool_type;
2223 return TypeManager.byte_type;
2224 case TypeCode.SByte:
2225 return TypeManager.sbyte_type;
2227 return TypeManager.char_type;
2228 case TypeCode.Int16:
2229 return TypeManager.short_type;
2230 case TypeCode.UInt16:
2231 return TypeManager.ushort_type;
2232 case TypeCode.Int32:
2233 return TypeManager.int32_type;
2234 case TypeCode.UInt32:
2235 return TypeManager.uint32_type;
2236 case TypeCode.Int64:
2237 return TypeManager.int64_type;
2238 case TypeCode.UInt64:
2239 return TypeManager.uint64_type;
2240 case TypeCode.Single:
2241 return TypeManager.float_type;
2242 case TypeCode.Double:
2243 return TypeManager.double_type;
2244 case TypeCode.String:
2245 return TypeManager.string_type;
2246 case TypeCode.Decimal:
2247 return TypeManager.decimal_type;
2250 if (t == typeof (void))
2251 return TypeManager.void_type;
2252 if (t == typeof (object))
2253 return TypeManager.object_type;
2254 if (t == typeof (System.Type))
2255 return TypeManager.type_type;
2256 if (t == typeof (System.IntPtr))
2257 return TypeManager.intptr_type;
2258 if (t == typeof (System.UIntPtr))
2259 return TypeManager.uintptr_type;
2262 int dim = t.GetArrayRank ();
2263 t = GetElementType (t);
2264 return t.MakeArrayType (dim);
2267 t = GetElementType (t);
2268 return t.MakeByRefType ();
2271 t = GetElementType (t);
2272 return t.MakePointerType ();
2279 /// Utility function that can be used to probe whether a type
2280 /// is managed or not.
2282 public static bool VerifyUnManaged (Type t, Location loc)
2284 if (IsUnmanagedType (t))
2287 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2294 /// Returns the name of the indexer in a given type.
2297 /// The default is not always `Item'. The user can change this behaviour by
2298 /// using the IndexerNameAttribute in the container.
2299 /// For example, the String class indexer is named `Chars' not `Item'
2301 public static string IndexerPropertyName (Type t)
2303 t = DropGenericTypeArguments (t);
2304 if (t is TypeBuilder) {
2305 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2306 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2309 System.Attribute attr = System.Attribute.GetCustomAttribute (
2310 t, TypeManager.default_member_type);
2312 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2313 return dma.MemberName;
2316 return TypeContainer.DefaultIndexerName;
2319 static MethodInfo declare_local_method = null;
2321 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2323 if (declare_local_method == null){
2324 declare_local_method = typeof (ILGenerator).GetMethod (
2326 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2328 new Type [] { typeof (Type), typeof (bool)},
2330 if (declare_local_method == null){
2331 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2332 return ig.DeclareLocal (t);
2335 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2338 private static bool IsSignatureEqual (Type a, Type b)
2341 /// Consider the following example (bug #77674):
2343 /// public abstract class A
2345 /// public abstract T Foo<T> ();
2348 /// public abstract class B : A
2350 /// public override U Foo<T> ()
2351 /// { return default (U); }
2354 /// Here, `T' and `U' are method type parameters from different methods
2355 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2357 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2358 /// we need to do a signature based comparision and consider them equal.
2364 if (a.IsGenericParameter && b.IsGenericParameter &&
2365 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2366 return a.GenericParameterPosition == b.GenericParameterPosition;
2370 if (a.IsArray && b.IsArray) {
2371 if (a.GetArrayRank () != b.GetArrayRank ())
2374 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2377 if (a.IsByRef && b.IsByRef)
2378 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2381 if (a.IsGenericType && b.IsGenericType) {
2382 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2385 Type[] aargs = a.GetGenericArguments ();
2386 Type[] bargs = b.GetGenericArguments ();
2388 if (aargs.Length != bargs.Length)
2391 for (int i = 0; i < aargs.Length; i++) {
2392 if (!IsSignatureEqual (aargs [i], bargs [i]))
2404 // Returns whether the array of memberinfos contains the given method
2406 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2408 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2410 foreach (MethodBase method in array) {
2411 if (method.Name != new_method.Name)
2414 if (method is MethodInfo && new_method is MethodInfo &&
2416 TypeToCoreType (((MethodInfo) method).ReturnType),
2417 TypeToCoreType (((MethodInfo) new_method).ReturnType)))
2420 Type [] old_args = TypeManager.GetParameterData (method).Types;
2421 int old_count = old_args.Length;
2424 if (new_args.Length != old_count)
2427 for (i = 0; i < old_count; i++){
2428 if (!IsSignatureEqual (old_args [i], new_args [i]))
2441 // We copy methods from `new_members' into `target_list' if the signature
2442 // for the method from in the new list does not exist in the target_list
2444 // The name is assumed to be the same.
2446 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2448 if (target_list == null){
2449 target_list = new ArrayList ();
2451 foreach (MemberInfo mi in new_members){
2452 if (mi is MethodBase)
2453 target_list.Add (mi);
2458 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2459 target_list.CopyTo (target_array, 0);
2461 foreach (MemberInfo mi in new_members){
2462 MethodBase new_method = (MethodBase) mi;
2464 if (!ArrayContainsMethod (target_array, new_method))
2465 target_list.Add (new_method);
2472 // Tracks the generic parameters.
2474 static PtrHashtable builder_to_type_param;
2476 public static void AddTypeParameter (Type t, TypeParameter tparam)
2478 if (!builder_to_type_param.Contains (t))
2479 builder_to_type_param.Add (t, tparam);
2482 public static TypeParameter LookupTypeParameter (Type t)
2484 return (TypeParameter) builder_to_type_param [t];
2487 // This method always return false for non-generic compiler,
2488 // while Type.IsGenericParameter is returned if it is supported.
2489 public static bool IsGenericParameter (Type type)
2492 return type.IsGenericParameter;
2498 public static int GenericParameterPosition (Type type)
2501 return type.GenericParameterPosition;
2503 throw new InternalErrorException ("should not be called");
2507 public static bool IsGenericType (Type type)
2510 return type.IsGenericType;
2516 public static bool IsGenericTypeDefinition (Type type)
2519 return type.IsGenericTypeDefinition;
2525 public static bool ContainsGenericParameters (Type type)
2528 return type.ContainsGenericParameters;
2534 public static FieldInfo GetGenericFieldDefinition (FieldInfo fi)
2537 if (fi.DeclaringType.IsGenericTypeDefinition ||
2538 !fi.DeclaringType.IsGenericType)
2541 Type t = fi.DeclaringType.GetGenericTypeDefinition ();
2542 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2543 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2545 // TODO: use CodeGen.Module.Builder.ResolveField (fi.MetadataToken);
2546 foreach (FieldInfo f in t.GetFields (bf))
2547 if (f.MetadataToken == fi.MetadataToken)
2554 public static bool IsEqual (Type a, Type b)
2557 // MS BCL returns true even if enum types are different
2558 if (a.BaseType == TypeManager.enum_type || b.BaseType == TypeManager.enum_type)
2559 return a.FullName == b.FullName;
2565 if (a.IsGenericParameter && b.IsGenericParameter) {
2566 // TODO: needs more testing before cleaning up
2567 //if (a.DeclaringMethod != b.DeclaringMethod &&
2568 // (a.DeclaringMethod == null || b.DeclaringMethod == null))
2570 return a.GenericParameterPosition == b.GenericParameterPosition;
2573 if (a.IsArray && b.IsArray) {
2574 if (a.GetArrayRank () != b.GetArrayRank ())
2576 return IsEqual (a.GetElementType (), b.GetElementType ());
2579 if (a.IsByRef && b.IsByRef)
2580 return IsEqual (a.GetElementType (), b.GetElementType ());
2582 if (a.IsGenericType && b.IsGenericType) {
2583 Type adef = a.GetGenericTypeDefinition ();
2584 Type bdef = b.GetGenericTypeDefinition ();
2589 if (adef.IsEnum && bdef.IsEnum)
2592 Type[] aargs = a.GetGenericArguments ();
2593 Type[] bargs = b.GetGenericArguments ();
2595 if (aargs.Length != bargs.Length)
2598 for (int i = 0; i < aargs.Length; i++) {
2599 if (!IsEqual (aargs [i], bargs [i]))
2610 public static bool IsEqual (Type[] a, Type[] b)
2612 if (a.Length != b.Length)
2615 for (int i = 0; i < a.Length; ++i) {
2616 if (!IsEqual (a [i], b [i]))
2623 public static Type DropGenericTypeArguments (Type t)
2626 if (!t.IsGenericType)
2628 // Micro-optimization: a generic typebuilder is always a generic type definition
2629 if (t is TypeBuilder)
2631 return t.GetGenericTypeDefinition ();
2637 public static MethodBase DropGenericMethodArguments (MethodBase m)
2640 if (m.IsGenericMethod)
2641 m = ((MethodInfo) m).GetGenericMethodDefinition ();
2643 Type t = m.DeclaringType;
2644 if (!t.IsGenericType || t.IsGenericTypeDefinition)
2647 t = t.GetGenericTypeDefinition ();
2648 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2649 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2652 // TODO: use CodeGen.Module.Builder.ResolveMethod ()
2656 if (m is ConstructorInfo) {
2657 foreach (ConstructorInfo c in t.GetConstructors (bf))
2658 if (c.MetadataToken == m.MetadataToken)
2661 foreach (MethodBase mb in t.GetMethods (bf))
2662 if (mb.MetadataToken == m.MetadataToken)
2670 public static Type[] GetGenericArguments (MethodBase mi)
2673 return mi.GetGenericArguments ();
2675 return Type.EmptyTypes;
2679 public static Type[] GetTypeArguments (Type t)
2682 DeclSpace tc = LookupDeclSpace (t);
2685 return Type.EmptyTypes;
2687 TypeParameter[] tparam = tc.TypeParameters;
2688 Type[] ret = new Type [tparam.Length];
2689 for (int i = 0; i < tparam.Length; i++) {
2690 ret [i] = tparam [i].Type;
2691 if (ret [i] == null)
2692 throw new InternalErrorException ();
2697 return t.GetGenericArguments ();
2699 throw new InternalErrorException ();
2703 public static GenericConstraints GetTypeParameterConstraints (Type t)
2706 if (!t.IsGenericParameter)
2707 throw new InvalidOperationException ();
2709 TypeParameter tparam = LookupTypeParameter (t);
2711 return tparam.GenericConstraints;
2713 return ReflectionConstraints.GetConstraints (t);
2715 throw new InternalErrorException ();
2719 public static bool HasGenericArguments (Type t)
2721 return GetNumberOfTypeArguments (t) > 0;
2724 public static int GetNumberOfTypeArguments (Type t)
2727 if (t.IsGenericParameter)
2729 DeclSpace tc = LookupDeclSpace (t);
2731 return tc.IsGeneric ? tc.CountTypeParameters : 0;
2733 return t.IsGenericType ? t.GetGenericArguments ().Length : 0;
2740 /// Check whether `type' and `parent' are both instantiations of the same
2741 /// generic type. Note that we do not check the type parameters here.
2743 public static bool IsInstantiationOfSameGenericType (Type type, Type parent)
2745 int tcount = GetNumberOfTypeArguments (type);
2746 int pcount = GetNumberOfTypeArguments (parent);
2748 if (tcount != pcount)
2751 type = DropGenericTypeArguments (type);
2752 parent = DropGenericTypeArguments (parent);
2754 return type.Equals (parent);
2758 /// Whether `mb' is a generic method definition.
2760 public static bool IsGenericMethodDefinition (MethodBase mb)
2763 if (mb.DeclaringType is TypeBuilder) {
2764 IMethodData method = (IMethodData) builder_to_method [mb];
2768 return method.GenericMethod != null;
2771 return mb.IsGenericMethodDefinition;
2778 /// Whether `mb' is a generic method.
2780 public static bool IsGenericMethod (MethodBase mb)
2783 return mb.IsGenericMethod;
2789 public static bool IsNullableType (Type t)
2792 return generic_nullable_type == DropGenericTypeArguments (t);
2798 public static bool IsNullableTypeOf (Type t, Type nullable)
2801 if (!IsNullableType (t))
2804 return GetTypeArguments (t) [0] == nullable;
2810 public static bool IsNullableValueType (Type t)
2813 if (!IsNullableType (t))
2816 return GetTypeArguments (t) [0].IsValueType;
2823 #region MemberLookup implementation
2826 // Whether we allow private members in the result (since FindMembers
2827 // uses NonPublic for both protected and private), we need to distinguish.
2830 internal class Closure {
2831 internal bool private_ok;
2833 // Who is invoking us and which type is being queried currently.
2834 internal Type invocation_type;
2835 internal Type qualifier_type;
2837 // The assembly that defines the type is that is calling us
2838 internal Assembly invocation_assembly;
2839 internal IList almost_match;
2841 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2843 if (invocation_type == null)
2846 if (is_static && qualifier_type == null)
2847 // It resolved from a simple name, so it should be visible.
2850 if (IsNestedChildOf (invocation_type, m.DeclaringType))
2853 for (Type t = invocation_type; t != null; t = t.DeclaringType) {
2854 if (!IsFamilyAccessible (t, m.DeclaringType))
2857 // Although a derived class can access protected members of its base class
2858 // it cannot do so through an instance of the base class (CS1540).
2859 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2860 if (is_static || qualifier_type == null ||
2861 IsInstantiationOfSameGenericType (t, qualifier_type) ||
2862 IsFamilyAccessible (qualifier_type, t))
2866 if (almost_match != null)
2867 almost_match.Add (m);
2873 // This filter filters by name + whether it is ok to include private
2874 // members in the search
2876 internal bool Filter (MemberInfo m, object filter_criteria)
2879 // Hack: we know that the filter criteria will always be in the
2880 // `closure' // fields.
2883 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2886 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2887 (invocation_type != null) &&
2888 IsPrivateAccessible (m.DeclaringType, invocation_type))
2892 // Ugly: we need to find out the type of `m', and depending
2893 // on this, tell whether we accept or not
2895 if (m is MethodBase){
2896 MethodBase mb = (MethodBase) m;
2897 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2899 if (ma == MethodAttributes.Public)
2902 if (ma == MethodAttributes.PrivateScope)
2905 if (ma == MethodAttributes.Private)
2906 return private_ok ||
2907 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2908 IsNestedChildOf (invocation_type, m.DeclaringType);
2910 if (TypeManager.IsThisOrFriendAssembly (mb.DeclaringType.Assembly)) {
2911 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2914 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2918 // Family, FamORAssem or FamANDAssem
2919 return CheckValidFamilyAccess (mb.IsStatic, m);
2922 if (m is FieldInfo){
2923 FieldInfo fi = (FieldInfo) m;
2924 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2926 if (fa == FieldAttributes.Public)
2929 if (fa == FieldAttributes.PrivateScope)
2932 if (fa == FieldAttributes.Private)
2933 return private_ok ||
2934 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2935 IsNestedChildOf (invocation_type, m.DeclaringType);
2937 if (TypeManager.IsThisOrFriendAssembly (fi.DeclaringType.Assembly)) {
2938 if ((fa == FieldAttributes.Assembly) ||
2939 (fa == FieldAttributes.FamORAssem))
2942 if ((fa == FieldAttributes.Assembly) ||
2943 (fa == FieldAttributes.FamANDAssem))
2947 // Family, FamORAssem or FamANDAssem
2948 return CheckValidFamilyAccess (fi.IsStatic, m);
2952 // EventInfos and PropertyInfos, return true because they lack
2953 // permission information, so we need to check later on the methods.
2959 static Closure closure = new Closure ();
2960 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2963 // Looks up a member called `name' in the `queried_type'. This lookup
2964 // is done by code that is contained in the definition for `invocation_type'
2965 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2967 // `invocation_type' is used to check whether we're allowed to access the requested
2968 // member wrt its protection level.
2970 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2971 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2972 // is B and qualifier_type is A). This is used to do the CS1540 check.
2974 // When resolving a SimpleName, `qualifier_type' is null.
2976 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2977 // the same than `queried_type' - except when we're being called from BaseAccess;
2978 // in this case, `invocation_type' is the current type and `queried_type' the base
2979 // type, so this'd normally trigger a CS1540.
2981 // The binding flags are `bf' and the kind of members being looked up are `mt'
2983 // The return value always includes private members which code in `invocation_type'
2984 // is allowed to access (using the specified `qualifier_type' if given); only use
2985 // BindingFlags.NonPublic to bypass the permission check.
2987 // The 'almost_match' argument is used for reporting error CS1540.
2989 // Returns an array of a single element for everything but Methods/Constructors
2990 // that might return multiple matches.
2992 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2993 Type queried_type, MemberTypes mt,
2994 BindingFlags original_bf, string name, IList almost_match)
2996 Timer.StartTimer (TimerType.MemberLookup);
2998 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2999 queried_type, mt, original_bf, name, almost_match);
3001 Timer.StopTimer (TimerType.MemberLookup);
3006 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
3007 Type queried_type, MemberTypes mt,
3008 BindingFlags original_bf, string name, IList almost_match)
3010 BindingFlags bf = original_bf;
3012 ArrayList method_list = null;
3013 Type current_type = queried_type;
3014 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
3015 bool skip_iface_check = true, used_cache = false;
3016 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
3018 closure.invocation_type = invocation_type;
3019 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
3020 closure.qualifier_type = qualifier_type;
3021 closure.almost_match = almost_match;
3023 // This is from the first time we find a method
3024 // in most cases, we do not actually find a method in the base class
3025 // so we can just ignore it, and save the arraylist allocation
3026 MemberInfo [] first_members_list = null;
3027 bool use_first_members_list = false;
3033 // `NonPublic' is lame, because it includes both protected and
3034 // private methods, so we need to control this behavior by
3035 // explicitly tracking if a private method is ok or not.
3037 // The possible cases are:
3038 // public, private and protected (internal does not come into the
3041 if ((invocation_type != null) &&
3042 ((invocation_type == current_type) ||
3043 IsNestedChildOf (invocation_type, current_type)) ||
3045 bf = original_bf | BindingFlags.NonPublic;
3049 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
3051 Timer.StopTimer (TimerType.MemberLookup);
3053 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
3055 Timer.StartTimer (TimerType.MemberLookup);
3058 // When queried for an interface type, the cache will automatically check all
3059 // inherited members, so we don't need to do this here. However, this only
3060 // works if we already used the cache in the first iteration of this loop.
3062 // If we used the cache in any further iteration, we can still terminate the
3063 // loop since the cache always looks in all base classes.
3069 skip_iface_check = false;
3071 if (current_type == TypeManager.object_type)
3074 current_type = current_type.BaseType;
3077 // This happens with interfaces, they have a null
3078 // basetype. Look members up in the Object class.
3080 if (current_type == null) {
3081 current_type = TypeManager.object_type;
3086 if (list.Length == 0)
3090 // Events and types are returned by both `static' and `instance'
3091 // searches, which means that our above FindMembers will
3092 // return two copies of the same.
3094 if (list.Length == 1 && !(list [0] is MethodBase)){
3099 // Multiple properties: we query those just to find out the indexer
3102 if (list [0] is PropertyInfo)
3106 // We found an event: the cache lookup returns both the event and
3107 // its private field.
3109 if (list [0] is EventInfo) {
3110 if ((list.Length == 2) && (list [1] is FieldInfo))
3111 return new MemberInfo [] { list [0] };
3117 // We found methods, turn the search into "method scan"
3121 if (first_members_list != null) {
3122 if (use_first_members_list) {
3123 method_list = CopyNewMethods (method_list, first_members_list);
3124 use_first_members_list = false;
3127 method_list = CopyNewMethods (method_list, list);
3129 first_members_list = list;
3130 use_first_members_list = true;
3131 mt &= (MemberTypes.Method | MemberTypes.Constructor);
3133 } while (searching);
3135 if (use_first_members_list)
3136 return first_members_list;
3138 if (method_list != null && method_list.Count > 0) {
3139 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3142 // This happens if we already used the cache in the first iteration, in this case
3143 // the cache already looked in all interfaces.
3145 if (skip_iface_check)
3149 // Interfaces do not list members they inherit, so we have to
3152 if (!queried_type.IsInterface)
3155 if (queried_type.IsArray)
3156 queried_type = TypeManager.array_type;
3158 Type [] ifaces = GetInterfaces (queried_type);
3162 foreach (Type itype in ifaces){
3165 x = MemberLookup (null, null, itype, mt, bf, name, null);
3173 const BindingFlags AllMembers = BindingFlags.Public | BindingFlags.NonPublic |
3174 BindingFlags.Static | BindingFlags.Instance |
3175 BindingFlags.DeclaredOnly;
3177 // Currently is designed to work with external types only
3178 public static PropertyInfo GetPropertyFromAccessor (MethodBase mb)
3180 if (!mb.IsSpecialName)
3183 string name = mb.Name;
3184 if (name.Length < 5)
3187 if (name [3] != '_')
3190 if (name.StartsWith ("get") || name.StartsWith ("set")) {
3191 MemberInfo[] pi = mb.DeclaringType.FindMembers (MemberTypes.Property, AllMembers,
3192 Type.FilterName, name.Substring (4));
3197 // This can happen when property is indexer (it can have same name but different parameters)
3198 foreach (PropertyInfo p in pi) {
3199 foreach (MethodInfo p_mi in p.GetAccessors (true)) {
3200 if (p_mi == mb || TypeManager.GetParameterData (p_mi).Equals (TypeManager.GetParameterData (mb)))
3209 // Currently is designed to work with external types only
3210 public static MemberInfo GetEventFromAccessor (MethodBase mb)
3212 if (!mb.IsSpecialName)
3215 string name = mb.Name;
3216 if (name.Length < 5)
3219 if (name.StartsWith ("add_"))
3220 return mb.DeclaringType.GetEvent (name.Substring (4), AllMembers);
3222 if (name.StartsWith ("remove_"))
3223 return mb.DeclaringType.GetEvent (name.Substring (7), AllMembers);
3228 // Tests whether external method is really special
3229 public static bool IsSpecialMethod (MethodBase mb)
3231 if (!mb.IsSpecialName)
3234 IMethodData md = TypeManager.GetMethod (mb);
3236 return (md is AbstractPropertyEventMethod || md is Operator);
3238 PropertyInfo pi = GetPropertyFromAccessor (mb);
3240 return IsValidProperty (pi);
3242 if (GetEventFromAccessor (mb) != null)
3245 string name = mb.Name;
3246 if (name.StartsWith ("op_")){
3247 foreach (string oname in Unary.oper_names) {
3252 foreach (string oname in Binary.oper_names) {
3260 // Tests whether imported property is valid C# property.
3261 // TODO: It seems to me that we should do a lot of sanity tests before
3262 // we accept property as C# property
3263 static bool IsValidProperty (PropertyInfo pi)
3265 MethodInfo get_method = pi.GetGetMethod (true);
3266 MethodInfo set_method = pi.GetSetMethod (true);
3267 if (get_method != null && set_method != null) {
3268 int g_count = get_method.GetParameters ().Length;
3269 int s_count = set_method.GetParameters ().Length;
3270 if (g_count + 1 != s_count)
3281 /// There is exactly one instance of this class per type.
3283 public sealed class TypeHandle : IMemberContainer {
3284 public readonly IMemberContainer BaseType;
3286 readonly int id = ++next_id;
3287 static int next_id = 0;
3289 static TypeHandle ()
3295 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3296 /// a TypeHandle yet, a new instance of it is created. This static method
3297 /// ensures that we'll only have one TypeHandle instance per type.
3299 private static TypeHandle GetTypeHandle (Type t)
3301 TypeHandle handle = (TypeHandle) type_hash [t];
3305 handle = new TypeHandle (t);
3306 type_hash.Add (t, handle);
3310 public static MemberCache GetMemberCache (Type t)
3312 return GetTypeHandle (t).MemberCache;
3315 public static void CleanUp ()
3320 public static void Reset ()
3322 type_hash = new PtrHashtable ();
3326 /// Returns the TypeHandle for TypeManager.object_type.
3328 public static IMemberContainer ObjectType {
3330 if (object_type != null)
3333 object_type = GetTypeHandle (TypeManager.object_type);
3340 /// Returns the TypeHandle for TypeManager.array_type.
3342 public static TypeHandle ArrayType {
3344 if (array_type != null)
3347 array_type = GetTypeHandle (TypeManager.array_type);
3353 private static PtrHashtable type_hash;
3355 private static TypeHandle object_type = null;
3356 private static TypeHandle array_type = null;
3359 private string full_name;
3360 private bool is_interface;
3361 private MemberCache member_cache;
3362 private MemberCache base_cache;
3364 private TypeHandle (Type type)
3367 full_name = type.FullName != null ? type.FullName : type.Name;
3368 if (type.BaseType != null) {
3369 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3370 BaseType = base_cache.Container;
3371 } else if (type.IsInterface)
3372 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3373 this.is_interface = type.IsInterface || TypeManager.IsGenericParameter (type);
3374 this.member_cache = new MemberCache (this);
3377 // IMemberContainer methods
3379 public string Name {
3391 public MemberCache BaseCache {
3397 public bool IsInterface {
3399 return is_interface;
3403 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3405 MemberInfo [] members;
3408 if (type is GenericTypeParameterBuilder)
3409 return MemberList.Empty;
3412 if (mt == MemberTypes.Event)
3413 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3415 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3418 if (members.Length == 0)
3419 return MemberList.Empty;
3421 Array.Reverse (members);
3422 return new MemberList (members);
3425 // IMemberFinder methods
3427 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3428 MemberFilter filter, object criteria)
3430 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3433 public MemberCache MemberCache {
3435 return member_cache;
3439 public override string ToString ()
3441 if (BaseType != null)
3442 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3444 return "TypeHandle (" + id + "," + Name + ")";