2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
6 // Marek Safar (marek.safar@seznam.cz)
8 // Dual licensed under the terms of the MIT X11 or GNU GPL
10 // Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
11 // Copyright 2003-2008 Novell, Inc.
15 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
16 // the behavior of the compilation. This can be removed if we rework
17 // the code to get a list of namespaces available.
19 #define SIMPLE_SPEEDUP
23 using System.Globalization;
24 using System.Collections;
25 using System.Reflection;
26 using System.Reflection.Emit;
28 using System.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
38 // A list of core types that the compiler requires or uses
40 static public Type object_type;
41 static public Type value_type;
42 static public Type string_type;
43 static public Type int32_type;
44 static public Type uint32_type;
45 static public Type int64_type;
46 static public Type uint64_type;
47 static public Type float_type;
48 static public Type double_type;
49 static public Type char_type;
50 static public Type char_ptr_type;
51 static public Type short_type;
52 static public Type decimal_type;
53 static public Type bool_type;
54 static public Type sbyte_type;
55 static public Type byte_type;
56 static public Type ushort_type;
57 static public Type enum_type;
58 static public Type delegate_type;
59 static public Type multicast_delegate_type;
60 static public Type void_type;
61 static public Type null_type;
62 static public Type array_type;
63 static public Type runtime_handle_type;
64 static public Type type_type;
65 static public Type ienumerator_type;
66 static public Type ienumerable_type;
67 static public Type idisposable_type;
68 static public Type default_member_type;
69 static public Type iasyncresult_type;
70 static public Type asynccallback_type;
71 static public Type intptr_type;
72 static public Type uintptr_type;
73 static public Type runtime_field_handle_type;
74 static public Type runtime_argument_handle_type;
75 static public Type attribute_type;
76 static public Type attribute_usage_type;
77 static public Type decimal_constant_attribute_type;
78 static public Type dllimport_type;
79 static public Type methodimpl_attr_type;
81 static public Type marshal_as_attr_type;
83 static public Type param_array_type;
84 static public Type void_ptr_type;
85 static public Type indexer_name_type;
86 static public Type exception_type;
87 static public Type obsolete_attribute_type;
88 static public Type conditional_attribute_type;
89 static public Type in_attribute_type;
90 static public Type out_attribute_type;
91 static public Type extension_attribute_type;
92 static public Type default_parameter_value_attribute_type;
94 static public Type anonymous_method_type;
95 static public Type cls_compliant_attribute_type;
96 static public Type typed_reference_type;
97 static public Type arg_iterator_type;
98 static public Type mbr_type;
99 static public Type struct_layout_attribute_type;
100 static public Type field_offset_attribute_type;
101 static public Type security_attr_type;
102 static public Type required_attr_type;
103 static public Type guid_attr_type;
104 static public Type assembly_culture_attribute_type;
105 static public Type assembly_version_attribute_type;
106 static public Type coclass_attr_type;
107 static public Type comimport_attr_type;
108 public static Type runtime_helpers_type;
109 public static Type internals_visible_attr_type;
114 static internal Type fixed_buffer_attr_type;
115 static internal Type default_charset_type;
116 static internal Type type_forwarder_attr_type;
117 static internal Type isvolatile_type;
118 static public Type generic_ilist_type;
119 static public Type generic_icollection_type;
120 static public Type generic_ienumerator_type;
121 static public Type generic_ienumerable_type;
122 static public Type generic_nullable_type;
127 static internal Type expression_type;
128 public static Type parameter_expression_type;
131 // Expressions representing the internal types. Used during declaration
134 static public TypeExpr system_object_expr, system_string_expr;
135 static public TypeExpr system_boolean_expr, system_decimal_expr;
136 static public TypeExpr system_single_expr, system_double_expr;
137 static public TypeExpr system_sbyte_expr, system_byte_expr;
138 static public TypeExpr system_int16_expr, system_uint16_expr;
139 static public TypeExpr system_int32_expr, system_uint32_expr;
140 static public TypeExpr system_int64_expr, system_uint64_expr;
141 static public TypeExpr system_char_expr, system_void_expr;
142 static public TypeExpr system_valuetype_expr;
143 static public TypeExpr system_intptr_expr;
144 public static TypeExpr expression_type_expr;
148 // These methods are called by code generated by the compiler
150 static public FieldInfo string_empty;
151 static public MethodInfo system_type_get_type_from_handle;
152 static public MethodInfo bool_movenext_void;
153 static public MethodInfo void_dispose_void;
154 static public MethodInfo void_monitor_enter_object;
155 static public MethodInfo void_monitor_exit_object;
156 static public MethodInfo void_initializearray_array_fieldhandle;
157 static public MethodInfo delegate_combine_delegate_delegate;
158 static public MethodInfo delegate_remove_delegate_delegate;
159 static public MethodInfo int_get_offset_to_string_data;
160 static public MethodInfo int_interlocked_compare_exchange;
161 static public PropertyInfo ienumerator_getcurrent;
162 public static MethodInfo methodbase_get_type_from_handle;
163 public static MethodInfo methodbase_get_type_from_handle_generic;
164 public static MethodInfo fieldinfo_get_field_from_handle;
165 static public MethodInfo activator_create_instance;
168 // The attribute constructors.
170 static public ConstructorInfo void_decimal_ctor_five_args;
171 static public ConstructorInfo void_decimal_ctor_int_arg;
172 static public ConstructorInfo default_member_ctor;
173 static public ConstructorInfo decimal_constant_attribute_ctor;
174 static internal ConstructorInfo struct_layout_attribute_ctor;
175 static public ConstructorInfo field_offset_attribute_ctor;
176 public static ConstructorInfo invalid_operation_exception_ctor;
178 static public CustomAttributeBuilder param_array_attr;
179 static CustomAttributeBuilder compiler_generated_attr;
180 static CustomAttributeBuilder debugger_hidden_attr;
183 static internal ConstructorInfo fixed_buffer_attr_ctor;
186 static internal CustomAttributeBuilder extension_attribute_attr;
188 static PtrHashtable builder_to_declspace;
190 static PtrHashtable builder_to_member_cache;
193 // Tracks the interfaces implemented by typebuilders. We only
194 // enter those who do implement or or more interfaces
196 static PtrHashtable builder_to_ifaces;
199 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
201 static Hashtable method_params;
204 // A hash table from override methods to their base virtual method.
206 static Hashtable method_overrides;
209 // Keeps track of methods
212 static Hashtable builder_to_method;
215 // Contains all public types from referenced assemblies.
216 // This member is used only if CLS Compliance verification is required.
218 public static Hashtable AllClsTopLevelTypes;
220 static Hashtable fieldbuilders_to_fields;
221 static Hashtable propertybuilder_to_property;
222 static Hashtable fields;
223 static Hashtable events;
224 static PtrHashtable assembly_internals_vis_attrs;
226 public static void CleanUp ()
228 // Lets get everything clean so that we can collect before generating code
229 builder_to_declspace = null;
230 builder_to_member_cache = null;
231 builder_to_ifaces = null;
232 builder_to_type_param = null;
233 method_params = null;
234 builder_to_method = null;
239 propertybuilder_to_property = null;
240 assembly_internals_vis_attrs = null;
242 TypeHandle.CleanUp ();
246 // These are expressions that represent some of the internal data types, used
249 static void InitExpressionTypes ()
251 system_object_expr = new TypeLookupExpression ("System.Object");
252 system_string_expr = new TypeLookupExpression ("System.String");
253 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
254 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
255 system_single_expr = new TypeLookupExpression ("System.Single");
256 system_double_expr = new TypeLookupExpression ("System.Double");
257 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
258 system_byte_expr = new TypeLookupExpression ("System.Byte");
259 system_int16_expr = new TypeLookupExpression ("System.Int16");
260 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
261 system_int32_expr = new TypeLookupExpression ("System.Int32");
262 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
263 system_int64_expr = new TypeLookupExpression ("System.Int64");
264 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
265 system_char_expr = new TypeLookupExpression ("System.Char");
266 system_void_expr = new TypeLookupExpression ("System.Void");
267 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
268 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
271 static TypeManager ()
275 InitExpressionTypes ();
278 static public void Reset ()
280 builder_to_declspace = new PtrHashtable ();
281 builder_to_member_cache = new PtrHashtable ();
282 builder_to_method = new PtrHashtable ();
283 builder_to_type_param = new PtrHashtable ();
284 method_params = new PtrHashtable ();
285 method_overrides = new PtrHashtable ();
286 builder_to_ifaces = new PtrHashtable ();
288 fieldbuilders_to_fields = new Hashtable ();
289 propertybuilder_to_property = new Hashtable ();
290 fields = new Hashtable ();
291 type_hash = new DoubleHash ();
292 assembly_internals_vis_attrs = new PtrHashtable ();
294 // TODO: I am really bored by all this static stuff
295 system_type_get_type_from_handle =
298 void_monitor_enter_object =
299 void_monitor_exit_object =
300 void_initializearray_array_fieldhandle =
301 delegate_combine_delegate_delegate =
302 delegate_remove_delegate_delegate =
303 int_get_offset_to_string_data =
304 int_interlocked_compare_exchange =
305 methodbase_get_type_from_handle =
306 methodbase_get_type_from_handle_generic =
307 fieldinfo_get_field_from_handle =
308 activator_create_instance = null;
310 ienumerator_getcurrent = null;
312 void_decimal_ctor_five_args =
313 void_decimal_ctor_int_arg =
314 default_member_ctor =
315 decimal_constant_attribute_ctor =
316 struct_layout_attribute_ctor =
317 field_offset_attribute_ctor =
318 invalid_operation_exception_ctor =
319 fixed_buffer_attr_ctor = null;
322 compiler_generated_attr =
323 extension_attribute_attr = null;
325 isvolatile_type = null;
327 // to uncover regressions
328 AllClsTopLevelTypes = null;
331 public static void AddUserType (DeclSpace ds)
333 builder_to_declspace.Add (ds.TypeBuilder, ds);
337 // This entry point is used by types that we define under the covers
339 public static void RegisterBuilder (Type tb, Type [] ifaces)
342 builder_to_ifaces [tb] = ifaces;
345 public static void AddMethod (MethodBase builder, IMethodData method)
347 builder_to_method.Add (builder, method);
348 method_params.Add (builder, method.ParameterInfo);
351 public static IMethodData GetMethod (MethodBase builder)
353 return (IMethodData) builder_to_method [builder];
357 /// Returns the DeclSpace whose Type is `t' or null if there is no
358 /// DeclSpace for `t' (ie, the Type comes from a library)
360 public static DeclSpace LookupDeclSpace (Type t)
362 return builder_to_declspace [t] as DeclSpace;
366 /// Returns the TypeContainer whose Type is `t' or null if there is no
367 /// TypeContainer for `t' (ie, the Type comes from a library)
369 public static TypeContainer LookupTypeContainer (Type t)
371 return builder_to_declspace [t] as TypeContainer;
374 public static MemberCache LookupMemberCache (Type t)
376 if (t.Module == CodeGen.Module.Builder) {
377 DeclSpace container = (DeclSpace)builder_to_declspace [t];
378 if (container != null)
379 return container.MemberCache;
383 if (t is GenericTypeParameterBuilder) {
384 TypeParameter container = builder_to_type_param [t] as TypeParameter;
386 if (container != null)
387 return container.MemberCache;
391 return TypeHandle.GetMemberCache (t);
394 public static MemberCache LookupBaseInterfacesCache (Type t)
396 Type [] ifaces = GetInterfaces (t);
398 if (ifaces != null && ifaces.Length == 1)
399 return LookupMemberCache (ifaces [0]);
401 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
402 MemberCache cache = builder_to_member_cache [t] as MemberCache;
406 cache = new MemberCache (ifaces);
407 builder_to_member_cache.Add (t, cache);
411 public static TypeContainer LookupInterface (Type t)
413 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
414 if ((tc == null) || (tc.Kind != Kind.Interface))
420 public static Delegate LookupDelegate (Type t)
422 return builder_to_declspace [t] as Delegate;
425 public static Class LookupClass (Type t)
427 return (Class) builder_to_declspace [t];
431 // We use this hash for multiple kinds of constructed types:
433 // (T, "&") Given T, get T &
434 // (T, "*") Given T, get T *
435 // (T, "[]") Given T and a array dimension, get T []
436 // (T, X) Given a type T and a simple name X, get the type T+X
438 // Accessibility tests, if necessary, should be done by the user
440 static DoubleHash type_hash = new DoubleHash ();
443 // Gets the reference to T version of the Type (T&)
445 public static Type GetReferenceType (Type t)
448 return t.MakeByRefType ();
450 return GetConstructedType (t, "&");
455 // Gets the pointer to T version of the Type (T*)
457 public static Type GetPointerType (Type t)
459 return GetConstructedType (t, "*");
462 public static Type GetConstructedType (Type t, string dim)
465 if (type_hash.Lookup (t, dim, out ret))
468 ret = t.Module.GetType (t.ToString () + dim);
470 type_hash.Insert (t, dim, ret);
475 ret = GetReferenceType (t);
476 type_hash.Insert (t, dim, ret);
481 if (t.IsGenericParameter || t.IsGenericType) {
484 while ((pos < dim.Length) && (dim [pos] == '[')) {
487 if (dim [pos] == ']') {
488 result = result.MakeArrayType ();
491 if (pos < dim.Length)
494 type_hash.Insert (t, dim, result);
499 while (dim [pos] == ',') {
503 if ((dim [pos] != ']') || (pos != dim.Length-1))
506 result = result.MakeArrayType (rank + 1);
507 type_hash.Insert (t, dim, result);
513 type_hash.Insert (t, dim, null);
517 public static CustomAttributeBuilder GetCompilerGeneratedAttribute (Location loc)
519 if (compiler_generated_attr != null)
520 return compiler_generated_attr;
522 Type t = TypeManager.CoreLookupType (
523 "System.Runtime.CompilerServices", "CompilerGeneratedAttribute", Kind.Class, true);
525 // TODO: it cannot be null
529 compiler_generated_attr = new CustomAttributeBuilder (
530 GetPredefinedConstructor (t, loc, Type.EmptyTypes), new object[0]);
532 return compiler_generated_attr;
535 public static CustomAttributeBuilder GetDebuggerHiddenAttribute (Location loc)
537 if (debugger_hidden_attr != null)
538 return debugger_hidden_attr;
540 Type t = TypeManager.CoreLookupType (
541 "System.Diagnostics", "DebuggerHiddenAttribute", Kind.Class, true);
543 // TODO: it cannot be null
547 debugger_hidden_attr = new CustomAttributeBuilder (
548 GetPredefinedConstructor (t, loc, Type.EmptyTypes), new object[0]);
550 return debugger_hidden_attr;
553 public static Type GetNestedType (Type t, string name)
556 if (!type_hash.Lookup (t, name, out ret)) {
557 ret = t.GetNestedType (name,
558 BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
559 type_hash.Insert (t, name, ret);
565 /// Fills static table with exported types from all referenced assemblies.
566 /// This information is required for CLS Compliance tests.
568 public static void LoadAllImportedTypes ()
570 AllClsTopLevelTypes = new Hashtable (1500);
571 foreach (Assembly a in RootNamespace.Global.Assemblies) {
572 foreach (Type t in a.GetExportedTypes ()) {
573 AllClsTopLevelTypes [t.FullName.ToLower (System.Globalization.CultureInfo.InvariantCulture)] = null;
578 public static bool NamespaceClash (string name, Location loc)
580 if (! RootNamespace.Global.IsNamespace (name))
583 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
588 /// Returns the C# name of a type if possible, or the full type name otherwise
590 static public string CSharpName (Type t)
595 if (t == typeof (ArglistParameter))
598 if (t == typeof (AnonymousMethodBody))
599 return "anonymous method";
601 return CSharpName (GetFullName (t));
604 static readonly char [] elements = new char [] { '*', '[' };
606 public static string CSharpName (string name)
608 if (name.Length > 10) {
610 case "System.Int32": return "int";
611 case "System.Int64": return "long";
612 case "System.String": return "string";
613 case "System.Boolean": return "bool";
614 case "System.Void": return "void";
615 case "System.Object": return "object";
616 case "System.UInt32": return "uint";
617 case "System.Int16": return "short";
618 case "System.UInt16": return "ushort";
619 case "System.UInt64": return "ulong";
620 case "System.Single": return "float";
621 case "System.Double": return "double";
622 case "System.Decimal": return "decimal";
623 case "System.Char": return "char";
624 case "System.Byte": return "byte";
625 case "System.SByte": return "sbyte";
628 int idx = name.IndexOfAny (elements, 10);
630 return CSharpName (name.Substring (0, idx)) + name.Substring (idx);
633 if (name [0] == AnonymousTypeClass.ClassNamePrefix [0] && name.StartsWith (AnonymousTypeClass.ClassNamePrefix))
634 return AnonymousTypeClass.SignatureForError;
636 return name.Replace ('+', '.');
639 static public string CSharpName (Type[] types)
641 if (types.Length == 0)
644 StringBuilder sb = new StringBuilder ();
645 for (int i = 0; i < types.Length; ++i) {
649 sb.Append (CSharpName (types [i]));
651 return sb.ToString ();
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 AParametersCollection 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 AParametersCollection 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);
1064 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute", Kind.Class, false);
1066 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute", Kind.Class, false);
1067 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute", Kind.Class, false);
1068 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute", Kind.Class, false);
1069 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute", Kind.Class, false);
1070 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute", Kind.Class, false);
1071 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute", Kind.Class, false);
1072 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute", Kind.Class, false);
1073 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute", Kind.Class, false);
1074 assembly_version_attribute_type = CoreLookupType ("System.Reflection", "AssemblyVersionAttribute", Kind.Class, false);
1075 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute", Kind.Class, false);
1076 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute", Kind.Class, false);
1077 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute", Kind.Class, false);
1078 default_parameter_value_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultParameterValueAttribute", Kind.Class, false);
1081 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute", Kind.Class, false);
1082 type_forwarder_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "TypeForwardedToAttribute", Kind.Class, false);
1083 generic_ilist_type = CoreLookupType ("System.Collections.Generic", "IList`1", Kind.Interface, false);
1084 generic_icollection_type = CoreLookupType ("System.Collections.Generic", "ICollection`1", Kind.Interface, false);
1085 generic_ienumerable_type = CoreLookupType ("System.Collections.Generic", "IEnumerable`1", Kind.Interface, false);
1086 generic_nullable_type = CoreLookupType ("System", "Nullable`1", Kind.Struct, false);
1089 // Optional types which are used as types and for member lookup
1091 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute", Kind.Class, false);
1092 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers", Kind.Class, false);
1093 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute", Kind.Class, false);
1094 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute", Kind.Class, false);
1095 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute", Kind.Class, false);
1098 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute", Kind.Class, false);
1101 extension_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "ExtensionAttribute", Kind.Class, false);
1102 expression_type = CoreLookupType ("System.Linq.Expressions", "Expression`1", Kind.Class, false);
1104 if (!RootContext.StdLib) {
1106 // HACK: When building Mono corlib mcs uses loaded mscorlib which
1107 // has different predefined types and this method sets mscorlib types
1108 // to be same to avoid any type check errors.
1111 Type type = typeof (Type);
1112 Type [] system_4_type_arg = { type, type, type, type };
1114 MethodInfo set_corlib_type_builders =
1115 typeof (System.Reflection.Emit.AssemblyBuilder).GetMethod (
1116 "SetCorlibTypeBuilders", BindingFlags.NonPublic | BindingFlags.Instance, null,
1117 system_4_type_arg, null);
1119 if (set_corlib_type_builders != null) {
1120 object[] args = new object [4];
1121 args [0] = object_type;
1122 args [1] = value_type;
1123 args [2] = enum_type;
1124 args [3] = void_type;
1126 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1128 Report.Warning (-26, 3, "The compilation may fail due to missing `{0}.SetCorlibTypeBuilders({1})' method",
1129 TypeManager.CSharpName (typeof (System.Reflection.Emit.AssemblyBuilder)),
1130 TypeManager.CSharpName (system_4_type_arg));
1134 system_string_expr.Type = string_type;
1135 system_boolean_expr.Type = bool_type;
1136 system_decimal_expr.Type = decimal_type;
1137 system_single_expr.Type = float_type;
1138 system_double_expr.Type = double_type;
1139 system_sbyte_expr.Type = sbyte_type;
1140 system_byte_expr.Type = byte_type;
1141 system_int16_expr.Type = short_type;
1142 system_uint16_expr.Type = ushort_type;
1143 system_int32_expr.Type = int32_type;
1144 system_uint32_expr.Type = uint32_type;
1145 system_int64_expr.Type = int64_type;
1146 system_uint64_expr.Type = uint64_type;
1147 system_char_expr.Type = char_type;
1148 system_void_expr.Type = void_type;
1151 // These are only used for compare purposes
1153 anonymous_method_type = typeof (AnonymousMethodBody);
1154 null_type = typeof (NullLiteral);
1157 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1160 /// This is the "old", non-cache based FindMembers() function. We cannot use
1161 /// the cache here because there is no member name argument.
1163 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1164 MemberFilter filter, object criteria)
1166 #if MS_COMPATIBLE && GMCS_SOURCE
1167 if (t.IsGenericType)
1168 t = t.GetGenericTypeDefinition ();
1171 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1174 // `builder_to_declspace' contains all dynamic types.
1178 Timer.StartTimer (TimerType.FindMembers);
1179 list = decl.FindMembers (mt, bf, filter, criteria);
1180 Timer.StopTimer (TimerType.FindMembers);
1185 // We have to take care of arrays specially, because GetType on
1186 // a TypeBuilder array will return a Type, not a TypeBuilder,
1187 // and we can not call FindMembers on this type.
1190 #if MS_COMPATIBLE && GMCS_SOURCE
1193 t.IsSubclassOf (TypeManager.array_type))
1194 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1197 if (t is GenericTypeParameterBuilder) {
1198 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1200 Timer.StartTimer (TimerType.FindMembers);
1201 MemberList list = tparam.FindMembers (
1202 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1203 Timer.StopTimer (TimerType.FindMembers);
1209 // Since FindMembers will not lookup both static and instance
1210 // members, we emulate this behaviour here.
1212 if ((bf & instance_and_static) == instance_and_static){
1213 MemberInfo [] i_members = t.FindMembers (
1214 mt, bf & ~BindingFlags.Static, filter, criteria);
1216 int i_len = i_members.Length;
1218 MemberInfo one = i_members [0];
1221 // If any of these are present, we are done!
1223 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1224 return new MemberList (i_members);
1227 MemberInfo [] s_members = t.FindMembers (
1228 mt, bf & ~BindingFlags.Instance, filter, criteria);
1230 int s_len = s_members.Length;
1231 if (i_len > 0 || s_len > 0)
1232 return new MemberList (i_members, s_members);
1235 return new MemberList (i_members);
1237 return new MemberList (s_members);
1241 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1246 /// This method is only called from within MemberLookup. It tries to use the member
1247 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1248 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1249 /// our return value will already contain all inherited members and the caller don't need
1250 /// to check base classes and interfaces anymore.
1252 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1253 string name, out bool used_cache)
1258 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1259 // and we can ask the DeclSpace for the MemberCache.
1262 if (t.Assembly == CodeGen.Assembly.Builder) {
1263 if (t.IsGenericParameter) {
1264 TypeParameter tparam = (TypeParameter) builder_to_type_param[t];
1267 if (tparam.MemberCache == null)
1268 return new MemberInfo[0];
1270 return tparam.MemberCache.FindMembers (
1271 mt, bf, name, FilterWithClosure_delegate, null);
1274 if (t.IsGenericType && !t.IsGenericTypeDefinition)
1275 t = t.GetGenericTypeDefinition ();
1277 if (t is TypeBuilder) {
1279 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1280 cache = decl.MemberCache;
1283 // If this DeclSpace has a MemberCache, use it.
1286 if (cache != null) {
1288 return cache.FindMembers (
1289 mt, bf, name, FilterWithClosure_delegate, null);
1292 // If there is no MemberCache, we need to use the "normal" FindMembers.
1293 // Note, this is a VERY uncommon route!
1296 Timer.StartTimer (TimerType.FindMembers);
1297 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1298 FilterWithClosure_delegate, name);
1299 Timer.StopTimer (TimerType.FindMembers);
1301 return (MemberInfo []) list;
1305 // We have to take care of arrays specially, because GetType on
1306 // a TypeBuilder array will return a Type, not a TypeBuilder,
1307 // and we can not call FindMembers on this type.
1311 return TypeHandle.ArrayType.MemberCache.FindMembers (
1312 mt, bf, name, FilterWithClosure_delegate, null);
1316 if (t is GenericTypeParameterBuilder) {
1317 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1320 if (tparam.MemberCache == null)
1321 return new MemberInfo [0];
1323 return tparam.MemberCache.FindMembers (
1324 mt, bf, name, FilterWithClosure_delegate, null);
1328 if (IsGenericType (t) && (mt == MemberTypes.NestedType)) {
1330 // This happens if we're resolving a class'es base class and interfaces
1331 // in TypeContainer.DefineType(). At this time, the types aren't
1332 // populated yet, so we can't use the cache.
1334 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1335 FilterWithClosure_delegate, name);
1341 // This call will always succeed. There is exactly one TypeHandle instance per
1342 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1343 // the corresponding MemberCache.
1345 cache = TypeHandle.GetMemberCache (t);
1348 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1351 public static bool IsBuiltinType (Type t)
1353 t = TypeToCoreType (t);
1354 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1355 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1356 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1357 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1364 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1365 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1367 public static bool IsPrimitiveType (Type t)
1369 return (t == int32_type || t == uint32_type ||
1370 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1371 t == char_type || t == short_type || t == bool_type ||
1372 t == sbyte_type || t == byte_type || t == ushort_type);
1375 public static bool IsDelegateType (Type t)
1378 if (t.IsGenericParameter)
1382 if (t == TypeManager.delegate_type || t == TypeManager.multicast_delegate_type)
1385 t = DropGenericTypeArguments (t);
1386 return IsSubclassOf (t, TypeManager.delegate_type);
1389 public static bool IsEnumType (Type t)
1391 t = DropGenericTypeArguments (t);
1392 return t.BaseType == TypeManager.enum_type;
1395 public static bool IsBuiltinOrEnum (Type t)
1397 if (IsBuiltinType (t))
1406 public static bool IsAttributeType (Type t)
1408 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1411 static Stack unmanaged_enclosing_types = new Stack (4);
1414 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1416 public static bool IsUnmanagedType (Type t)
1418 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1419 if (unmanaged_enclosing_types.Contains (t))
1422 // builtins that are not unmanaged types
1423 if (t == TypeManager.object_type || t == TypeManager.string_type)
1426 if (IsGenericType (t) || IsGenericParameter (t))
1429 if (IsBuiltinOrEnum (t))
1432 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1436 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1440 if (!IsValueType (t))
1444 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1445 if (p.IsGenericTypeDefinition)
1450 unmanaged_enclosing_types.Push (t);
1454 if (t is TypeBuilder) {
1455 TypeContainer tc = LookupTypeContainer (t);
1456 if (tc.Fields != null){
1457 foreach (FieldBase f in tc.Fields){
1458 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1459 if ((f.ModFlags & Modifiers.STATIC) != 0)
1461 if (f.MemberType == null)
1463 if (!IsUnmanagedType (f.MemberType)){
1464 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1470 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1472 foreach (FieldInfo f in fields){
1473 if (!IsUnmanagedType (f.FieldType)){
1474 Report.SymbolRelatedToPreviousError (f);
1480 unmanaged_enclosing_types.Pop ();
1486 // Null is considered to be a reference type
1488 public static bool IsReferenceType (Type t)
1490 if (TypeManager.IsGenericParameter (t)) {
1491 GenericConstraints constraints = TypeManager.GetTypeParameterConstraints (t);
1492 if (constraints == null)
1495 return constraints.IsReferenceType;
1498 return !t.IsValueType;
1501 public static bool IsValueType (Type t)
1503 return t.IsValueType || IsGenericParameter (t);
1506 public static bool IsInterfaceType (Type t)
1508 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1512 return tc.Kind == Kind.Interface;
1515 public static bool IsSubclassOf (Type type, Type base_type)
1517 TypeParameter tparam = LookupTypeParameter (type);
1518 TypeParameter pparam = LookupTypeParameter (base_type);
1520 if ((tparam != null) && (pparam != null)) {
1521 if (tparam == pparam)
1524 return tparam.IsSubclassOf (base_type);
1527 #if MS_COMPATIBLE && GMCS_SOURCE
1528 if (type.IsGenericType)
1529 type = type.GetGenericTypeDefinition ();
1532 if (type.IsSubclassOf (base_type))
1536 if (IsEqual (type, base_type))
1539 type = type.BaseType;
1540 } while (type != null);
1545 public static bool IsPrivateAccessible (Type type, Type parent)
1550 if (type.Equals (parent))
1553 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1556 public static bool IsFamilyAccessible (Type type, Type parent)
1558 TypeParameter tparam = LookupTypeParameter (type);
1559 TypeParameter pparam = LookupTypeParameter (parent);
1561 if ((tparam != null) && (pparam != null)) {
1562 if (tparam == pparam)
1565 return tparam.IsSubclassOf (parent);
1569 if (IsInstantiationOfSameGenericType (type, parent))
1572 type = type.BaseType;
1573 } while (type != null);
1579 // Checks whether `type' is a subclass or nested child of `base_type'.
1581 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1584 if (IsFamilyAccessible (type, base_type))
1587 // Handle nested types.
1588 type = type.DeclaringType;
1589 } while (type != null);
1595 // Checks whether `type' is a nested child of `parent'.
1597 public static bool IsNestedChildOf (Type type, Type parent)
1602 type = DropGenericTypeArguments (type);
1603 parent = DropGenericTypeArguments (parent);
1605 if (IsEqual (type, parent))
1608 type = type.DeclaringType;
1609 while (type != null) {
1610 if (IsEqual (type, parent))
1613 type = type.DeclaringType;
1620 // Checks whether `extern_type' is friend of the output assembly
1622 public static bool IsThisOrFriendAssembly (Assembly assembly)
1624 if (assembly == CodeGen.Assembly.Builder)
1627 if (assembly_internals_vis_attrs.Contains (assembly))
1628 return (bool)(assembly_internals_vis_attrs [assembly]);
1630 if (internals_visible_attr_type == null)
1633 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1634 if (attrs.Length == 0) {
1635 assembly_internals_vis_attrs.Add (assembly, false);
1639 bool is_friend = false;
1641 AssemblyName this_name = CodeGen.Assembly.Name;
1642 byte [] this_token = this_name.GetPublicKeyToken ();
1643 foreach (InternalsVisibleToAttribute attr in attrs) {
1644 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1647 AssemblyName aname = null;
1649 aname = new AssemblyName (attr.AssemblyName);
1650 } catch (FileLoadException) {
1651 } catch (ArgumentException) {
1654 if (aname == null || aname.Name != this_name.Name)
1657 byte [] key_token = aname.GetPublicKeyToken ();
1658 if (key_token != null) {
1659 if (this_token.Length == 0) {
1660 // Same name, but assembly is not strongnamed
1661 Error_FriendAccessNameNotMatching (aname.FullName);
1665 if (!CompareKeyTokens (this_token, key_token))
1673 assembly_internals_vis_attrs.Add (assembly, is_friend);
1678 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1680 for (int i = 0; i < token1.Length; i++)
1681 if (token1 [i] != token2 [i])
1687 static void Error_FriendAccessNameNotMatching (string other_name)
1689 Report.Error (281, "Friend access was granted to `" + other_name +
1690 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1691 "'. Try adding a reference to `" + other_name +
1692 "' or change the output assembly name to match it");
1697 // Do the right thing when returning the element type of an
1698 // array type based on whether we are compiling corlib or not
1700 public static Type GetElementType (Type t)
1702 if (RootContext.StdLib)
1703 return t.GetElementType ();
1705 return TypeToCoreType (t.GetElementType ());
1709 /// This method is not implemented by MS runtime for dynamic types
1711 public static bool HasElementType (Type t)
1713 return t.IsArray || t.IsPointer || t.IsByRef;
1716 public static Type GetEnumUnderlyingType (Type t)
1718 t = DropGenericTypeArguments (t);
1719 Enum e = LookupTypeContainer (t) as Enum;
1721 return e.UnderlyingType;
1724 FieldInfo fi = GetPredefinedField (t, Enum.UnderlyingValueField, Location.Null, Type.EmptyTypes);
1726 return TypeManager.int32_type;
1728 return TypeToCoreType (fi.FieldType);
1732 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1736 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1737 /// for anything which is dynamic, and we need this in a number of places,
1738 /// we register this information here, and use it afterwards.
1740 static public void RegisterMethod (MethodBase mb, AParametersCollection ip)
1742 method_params.Add (mb, ip);
1745 static public void RegisterIndexer (PropertyBuilder pb, AParametersCollection p)
1747 method_params.Add (pb, p);
1750 static public AParametersCollection GetParameterData (MethodBase mb)
1752 AParametersCollection pd = (AParametersCollection) method_params [mb];
1755 if (mb.IsGenericMethod && !mb.IsGenericMethodDefinition) {
1756 MethodInfo mi = ((MethodInfo) mb).GetGenericMethodDefinition ();
1757 pd = GetParameterData (mi);
1759 if (mi.IsGenericMethod)
1760 pd = pd.InflateTypes (mi.GetGenericArguments (), mb.GetGenericArguments ());
1762 pd = pd.InflateTypes (mi.DeclaringType.GetGenericArguments (), mb.GetGenericArguments ());
1764 method_params.Add (mb, pd);
1768 if (mb.DeclaringType.Assembly == CodeGen.Assembly.Builder) {
1769 throw new InternalErrorException ("Parameters are not registered for method `{0}'",
1770 TypeManager.CSharpName (mb.DeclaringType) + "." + mb.Name);
1773 pd = ParametersCollection.Create (mb);
1775 MethodBase generic = TypeManager.DropGenericMethodArguments (mb);
1776 if (generic != mb) {
1777 pd = TypeManager.GetParameterData (generic);
1778 pd = ParametersCollection.Create (pd, mb);
1780 pd = ParametersCollection.Create (mb);
1783 method_params.Add (mb, pd);
1788 public static AParametersCollection GetParameterData (PropertyInfo pi)
1790 AParametersCollection pd = (AParametersCollection)method_params [pi];
1792 if (pi is PropertyBuilder)
1793 return Parameters.EmptyReadOnlyParameters;
1795 ParameterInfo [] p = pi.GetIndexParameters ();
1797 return Parameters.EmptyReadOnlyParameters;
1799 pd = ParametersCollection.Create (p, null);
1800 method_params.Add (pi, pd);
1806 public static AParametersCollection GetDelegateParameters (Type t)
1808 Delegate d = builder_to_declspace [t] as Delegate;
1810 return d.Parameters;
1812 MethodInfo invoke_mb = Delegate.GetInvokeMethod (t, t);
1813 return GetParameterData (invoke_mb);
1816 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1818 if (!method_overrides.Contains (override_method))
1819 method_overrides [override_method] = base_method;
1820 if (method_overrides [override_method] != base_method)
1821 throw new InternalErrorException ("Override mismatch: " + override_method);
1824 static public bool IsOverride (MethodBase m)
1826 m = DropGenericMethodArguments (m);
1828 return m.IsVirtual &&
1829 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1830 (m is MethodBuilder || method_overrides.Contains (m));
1833 static public MethodBase TryGetBaseDefinition (MethodBase m)
1835 m = DropGenericMethodArguments (m);
1837 return (MethodBase) method_overrides [m];
1840 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1842 fields.Add (fb, ic);
1845 public static IConstant GetConstant (FieldInfo fb)
1850 return (IConstant)fields [fb];
1853 public static void RegisterProperty (PropertyInfo pi, PropertyBase pb)
1855 propertybuilder_to_property.Add (pi, pb);
1858 public static PropertyBase GetProperty (PropertyInfo pi)
1860 return (PropertyBase)propertybuilder_to_property [pi];
1863 static public void RegisterFieldBase (FieldBuilder fb, FieldBase f)
1865 fieldbuilders_to_fields.Add (fb, f);
1869 // The return value can be null; This will be the case for
1870 // auxiliary FieldBuilders created by the compiler that have no
1871 // real field being declared on the source code
1873 static public FieldBase GetField (FieldInfo fb)
1876 fb = GetGenericFieldDefinition (fb);
1878 return (FieldBase) fieldbuilders_to_fields [fb];
1881 static public MethodInfo GetAddMethod (EventInfo ei)
1883 if (ei is MyEventBuilder) {
1884 return ((MyEventBuilder)ei).GetAddMethod (true);
1886 return ei.GetAddMethod (true);
1889 static public MethodInfo GetRemoveMethod (EventInfo ei)
1891 if (ei is MyEventBuilder) {
1892 return ((MyEventBuilder)ei).GetRemoveMethod (true);
1894 return ei.GetRemoveMethod (true);
1897 static public void RegisterEventField (EventInfo einfo, EventField e)
1900 events = new Hashtable ();
1902 events.Add (einfo, e);
1905 static public EventField GetEventField (EventInfo ei)
1910 return (EventField) events [ei];
1913 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1915 Hashtable hash = new Hashtable ();
1916 return CheckStructCycles (tc, seen, hash);
1919 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1922 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc.TypeBuilder))
1926 // `seen' contains all types we've already visited.
1928 if (seen.Contains (tc))
1930 seen.Add (tc, null);
1932 if (tc.Fields == null)
1935 foreach (FieldBase field in tc.Fields) {
1936 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1939 Type ftype = field.FieldBuilder.FieldType;
1940 TypeContainer ftc = LookupTypeContainer (ftype);
1944 if (hash.Contains (ftc)) {
1945 Report.Error (523, tc.Location,
1946 "Struct member `{0}.{1}' of type `{2}' " +
1947 "causes a cycle in the struct layout",
1948 tc.Name, field.Name, ftc.Name);
1953 // `hash' contains all types in the current path.
1955 hash.Add (tc, null);
1957 bool ok = CheckStructCycles (ftc, seen, hash);
1964 if (!seen.Contains (ftc))
1965 seen.Add (ftc, null);
1972 /// Given an array of interface types, expand and eliminate repeated ocurrences
1973 /// of an interface.
1977 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1980 public static Type[] ExpandInterfaces (TypeExpr [] base_interfaces)
1982 ArrayList new_ifaces = new ArrayList ();
1984 foreach (TypeExpr iface in base_interfaces){
1985 Type itype = iface.Type;
1987 if (new_ifaces.Contains (itype))
1990 new_ifaces.Add (itype);
1992 Type [] implementing = GetInterfaces (itype);
1994 foreach (Type imp in implementing){
1995 if (!new_ifaces.Contains (imp))
1996 new_ifaces.Add (imp);
1999 Type [] ret = new Type [new_ifaces.Count];
2000 new_ifaces.CopyTo (ret, 0);
2004 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2006 ArrayList new_ifaces = new ArrayList ();
2008 foreach (Type itype in base_interfaces){
2009 if (new_ifaces.Contains (itype))
2012 new_ifaces.Add (itype);
2014 Type [] implementing = GetInterfaces (itype);
2016 foreach (Type imp in implementing){
2017 if (!new_ifaces.Contains (imp))
2018 new_ifaces.Add (imp);
2021 Type [] ret = new Type [new_ifaces.Count];
2022 new_ifaces.CopyTo (ret, 0);
2026 static PtrHashtable iface_cache = new PtrHashtable ();
2029 /// This function returns the interfaces in the type `t'. Works with
2030 /// both types and TypeBuilders.
2032 public static Type [] GetInterfaces (Type t)
2034 Type [] cached = iface_cache [t] as Type [];
2039 // The reason for catching the Array case is that Reflection.Emit
2040 // will not return a TypeBuilder for Array types of TypeBuilder types,
2041 // but will still throw an exception if we try to call GetInterfaces
2044 // Since the array interfaces are always constant, we return those for
2049 t = TypeManager.array_type;
2051 if ((t is TypeBuilder) || IsGenericType (t)) {
2052 Type [] base_ifaces;
2054 if (t.BaseType == null)
2055 base_ifaces = Type.EmptyTypes;
2057 base_ifaces = GetInterfaces (t.BaseType);
2059 if (IsGenericType (t))
2060 #if MS_COMPATIBLE && GMCS_SOURCE
2061 type_ifaces = t.GetGenericTypeDefinition().GetInterfaces ();
2063 type_ifaces = t.GetInterfaces ();
2066 type_ifaces = (Type []) builder_to_ifaces [t];
2067 if (type_ifaces == null || type_ifaces.Length == 0)
2068 type_ifaces = Type.EmptyTypes;
2070 int base_count = base_ifaces.Length;
2071 Type [] result = new Type [base_count + type_ifaces.Length];
2072 base_ifaces.CopyTo (result, 0);
2073 type_ifaces.CopyTo (result, base_count);
2075 iface_cache [t] = result;
2078 } else if (t is GenericTypeParameterBuilder){
2079 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2080 if (type_ifaces == null || type_ifaces.Length == 0)
2081 type_ifaces = Type.EmptyTypes;
2083 iface_cache [t] = type_ifaces;
2087 Type[] ifaces = t.GetInterfaces ();
2088 iface_cache [t] = ifaces;
2094 // gets the interfaces that are declared explicitly on t
2096 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2098 return (Type []) builder_to_ifaces [t];
2102 /// The following is used to check if a given type implements an interface.
2103 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2105 public static bool ImplementsInterface (Type t, Type iface)
2110 // FIXME OPTIMIZATION:
2111 // as soon as we hit a non-TypeBuiler in the interface
2112 // chain, we could return, as the `Type.GetInterfaces'
2113 // will return all the interfaces implement by the type
2117 interfaces = GetInterfaces (t);
2119 if (interfaces != null){
2120 foreach (Type i in interfaces){
2127 } while (t != null);
2132 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2134 // This is a custom version of Convert.ChangeType() which works
2135 // with the TypeBuilder defined types when compiling corlib.
2136 public static object ChangeType (object value, Type conversionType, out bool error)
2138 IConvertible convert_value = value as IConvertible;
2140 if (convert_value == null){
2147 // We must use Type.Equals() here since `conversionType' is
2148 // the TypeBuilder created version of a system type and not
2149 // the system type itself. You cannot use Type.GetTypeCode()
2150 // on such a type - it'd always return TypeCode.Object.
2153 // We cannot rely on build-in type conversions as they are
2154 // more limited than what C# supports.
2155 // See char -> float/decimal/double conversion
2160 if (conversionType.Equals (typeof (Boolean)))
2161 return (object)(convert_value.ToBoolean (nf_provider));
2162 if (conversionType.Equals (typeof (Byte)))
2163 return (object)(convert_value.ToByte (nf_provider));
2164 if (conversionType.Equals (typeof (Char)))
2165 return (object)(convert_value.ToChar (nf_provider));
2166 if (conversionType.Equals (typeof (DateTime)))
2167 return (object)(convert_value.ToDateTime (nf_provider));
2169 if (conversionType.Equals (decimal_type)) {
2170 if (convert_value.GetType () == TypeManager.char_type)
2171 return (decimal)convert_value.ToInt32 (nf_provider);
2172 return convert_value.ToDecimal (nf_provider);
2175 if (conversionType.Equals (typeof (Double))) {
2176 if (convert_value.GetType () == TypeManager.char_type)
2177 return (double)convert_value.ToInt32 (nf_provider);
2178 return convert_value.ToDouble (nf_provider);
2181 if (conversionType.Equals (typeof (Int16)))
2182 return (object)(convert_value.ToInt16 (nf_provider));
2183 if (conversionType.Equals (int32_type))
2184 return (object)(convert_value.ToInt32 (nf_provider));
2185 if (conversionType.Equals (int64_type))
2186 return (object)(convert_value.ToInt64 (nf_provider));
2187 if (conversionType.Equals (typeof (SByte)))
2188 return (object)(convert_value.ToSByte (nf_provider));
2190 if (conversionType.Equals (typeof (Single))) {
2191 if (convert_value.GetType () == TypeManager.char_type)
2192 return (float)convert_value.ToInt32 (nf_provider);
2193 return convert_value.ToSingle (nf_provider);
2196 if (conversionType.Equals (typeof (String)))
2197 return (object)(convert_value.ToString (nf_provider));
2198 if (conversionType.Equals (typeof (UInt16)))
2199 return (object)(convert_value.ToUInt16 (nf_provider));
2200 if (conversionType.Equals (typeof (UInt32)))
2201 return (object)(convert_value.ToUInt32 (nf_provider));
2202 if (conversionType.Equals (typeof (UInt64)))
2203 return (object)(convert_value.ToUInt64 (nf_provider));
2204 if (conversionType.Equals (typeof (Object)))
2205 return (object)(value);
2215 // When compiling with -nostdlib and the type is imported from an external assembly
2216 // SRE uses "wrong" type and we have to convert it to the right compiler instance.
2218 public static Type TypeToCoreType (Type t)
2220 if (RootContext.StdLib || t.Module != typeof (object).Module)
2223 TypeCode tc = Type.GetTypeCode (t);
2226 case TypeCode.Boolean:
2227 return TypeManager.bool_type;
2229 return TypeManager.byte_type;
2230 case TypeCode.SByte:
2231 return TypeManager.sbyte_type;
2233 return TypeManager.char_type;
2234 case TypeCode.Int16:
2235 return TypeManager.short_type;
2236 case TypeCode.UInt16:
2237 return TypeManager.ushort_type;
2238 case TypeCode.Int32:
2239 return TypeManager.int32_type;
2240 case TypeCode.UInt32:
2241 return TypeManager.uint32_type;
2242 case TypeCode.Int64:
2243 return TypeManager.int64_type;
2244 case TypeCode.UInt64:
2245 return TypeManager.uint64_type;
2246 case TypeCode.Single:
2247 return TypeManager.float_type;
2248 case TypeCode.Double:
2249 return TypeManager.double_type;
2250 case TypeCode.String:
2251 return TypeManager.string_type;
2252 case TypeCode.Decimal:
2253 return TypeManager.decimal_type;
2256 if (t == typeof (void))
2257 return TypeManager.void_type;
2258 if (t == typeof (object))
2259 return TypeManager.object_type;
2260 if (t == typeof (System.Type))
2261 return TypeManager.type_type;
2262 if (t == typeof (System.IntPtr))
2263 return TypeManager.intptr_type;
2264 if (t == typeof (System.UIntPtr))
2265 return TypeManager.uintptr_type;
2268 int dim = t.GetArrayRank ();
2269 t = GetElementType (t);
2270 return t.MakeArrayType (dim);
2273 t = GetElementType (t);
2274 return t.MakeByRefType ();
2277 t = GetElementType (t);
2278 return t.MakePointerType ();
2285 /// Utility function that can be used to probe whether a type
2286 /// is managed or not.
2288 public static bool VerifyUnManaged (Type t, Location loc)
2290 if (IsUnmanagedType (t))
2293 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2300 /// Returns the name of the indexer in a given type.
2303 /// The default is not always `Item'. The user can change this behaviour by
2304 /// using the IndexerNameAttribute in the container.
2305 /// For example, the String class indexer is named `Chars' not `Item'
2307 public static string IndexerPropertyName (Type t)
2309 t = DropGenericTypeArguments (t);
2310 if (t is TypeBuilder) {
2311 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2312 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2315 System.Attribute attr = System.Attribute.GetCustomAttribute (
2316 t, TypeManager.default_member_type);
2318 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2319 return dma.MemberName;
2322 return TypeContainer.DefaultIndexerName;
2325 static MethodInfo declare_local_method = null;
2327 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2329 if (declare_local_method == null){
2330 declare_local_method = typeof (ILGenerator).GetMethod (
2332 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2334 new Type [] { typeof (Type), typeof (bool)},
2336 if (declare_local_method == null){
2337 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2338 return ig.DeclareLocal (t);
2341 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2344 private static bool IsSignatureEqual (Type a, Type b)
2347 /// Consider the following example (bug #77674):
2349 /// public abstract class A
2351 /// public abstract T Foo<T> ();
2354 /// public abstract class B : A
2356 /// public override U Foo<T> ()
2357 /// { return default (U); }
2360 /// Here, `T' and `U' are method type parameters from different methods
2361 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2363 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2364 /// we need to do a signature based comparision and consider them equal.
2370 if (a.IsGenericParameter && b.IsGenericParameter &&
2371 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2372 return a.GenericParameterPosition == b.GenericParameterPosition;
2376 if (a.IsArray && b.IsArray) {
2377 if (a.GetArrayRank () != b.GetArrayRank ())
2380 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2383 if (a.IsByRef && b.IsByRef)
2384 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2387 if (a.IsGenericType && b.IsGenericType) {
2388 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2391 Type[] aargs = a.GetGenericArguments ();
2392 Type[] bargs = b.GetGenericArguments ();
2394 if (aargs.Length != bargs.Length)
2397 for (int i = 0; i < aargs.Length; i++) {
2398 if (!IsSignatureEqual (aargs [i], bargs [i]))
2410 // Returns whether the array of memberinfos contains the given method
2412 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method, bool ignoreDeclType)
2414 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2416 foreach (MethodBase method in array) {
2417 if (!ignoreDeclType && method.DeclaringType != new_method.DeclaringType)
2420 if (method.Name != new_method.Name)
2423 if (method is MethodInfo && new_method is MethodInfo &&
2425 TypeToCoreType (((MethodInfo) method).ReturnType),
2426 TypeToCoreType (((MethodInfo) new_method).ReturnType)))
2429 Type [] old_args = TypeManager.GetParameterData (method).Types;
2430 int old_count = old_args.Length;
2433 if (new_args.Length != old_count)
2436 for (i = 0; i < old_count; i++){
2437 if (!IsSignatureEqual (old_args [i], new_args [i]))
2450 // We copy methods from `new_members' into `target_list' if the signature
2451 // for the method from in the new list does not exist in the target_list
2453 // The name is assumed to be the same.
2455 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2457 if (target_list == null){
2458 target_list = new ArrayList ();
2460 foreach (MemberInfo mi in new_members){
2461 if (mi is MethodBase)
2462 target_list.Add (mi);
2467 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2468 target_list.CopyTo (target_array, 0);
2470 foreach (MemberInfo mi in new_members){
2471 MethodBase new_method = (MethodBase) mi;
2473 if (!ArrayContainsMethod (target_array, new_method, true))
2474 target_list.Add (new_method);
2481 // Tracks the generic parameters.
2483 static PtrHashtable builder_to_type_param;
2485 public static void AddTypeParameter (Type t, TypeParameter tparam)
2487 if (!builder_to_type_param.Contains (t))
2488 builder_to_type_param.Add (t, tparam);
2491 public static TypeParameter LookupTypeParameter (Type t)
2493 return (TypeParameter) builder_to_type_param [t];
2496 // This method always return false for non-generic compiler,
2497 // while Type.IsGenericParameter is returned if it is supported.
2498 public static bool IsGenericParameter (Type type)
2501 return type.IsGenericParameter;
2507 public static int GenericParameterPosition (Type type)
2510 return type.GenericParameterPosition;
2512 throw new InternalErrorException ("should not be called");
2516 public static bool IsGenericType (Type type)
2519 return type.IsGenericType;
2525 public static bool IsGenericTypeDefinition (Type type)
2528 return type.IsGenericTypeDefinition;
2534 public static bool ContainsGenericParameters (Type type)
2537 return type.ContainsGenericParameters;
2543 public static FieldInfo GetGenericFieldDefinition (FieldInfo fi)
2546 if (fi.DeclaringType.IsGenericTypeDefinition ||
2547 !fi.DeclaringType.IsGenericType)
2550 Type t = fi.DeclaringType.GetGenericTypeDefinition ();
2551 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2552 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2554 // TODO: use CodeGen.Module.Builder.ResolveField (fi.MetadataToken);
2555 foreach (FieldInfo f in t.GetFields (bf))
2556 if (f.MetadataToken == fi.MetadataToken)
2563 public static bool IsEqual (Type a, Type b)
2566 // MS BCL returns true even if enum types are different
2567 if (a.BaseType == TypeManager.enum_type || b.BaseType == TypeManager.enum_type)
2568 return a.FullName == b.FullName;
2570 // Some types are never equal
2571 if (a == TypeManager.null_type || a == TypeManager.anonymous_method_type)
2578 if (a.IsGenericParameter && b.IsGenericParameter) {
2579 // TODO: needs more testing before cleaning up
2580 //if (a.DeclaringMethod != b.DeclaringMethod &&
2581 // (a.DeclaringMethod == null || b.DeclaringMethod == null))
2583 return a.GenericParameterPosition == b.GenericParameterPosition;
2586 if (a.IsArray && b.IsArray) {
2587 if (a.GetArrayRank () != b.GetArrayRank ())
2589 return IsEqual (a.GetElementType (), b.GetElementType ());
2592 if (a.IsByRef && b.IsByRef)
2593 return IsEqual (a.GetElementType (), b.GetElementType ());
2595 if (a.IsGenericType && b.IsGenericType) {
2596 Type adef = a.GetGenericTypeDefinition ();
2597 Type bdef = b.GetGenericTypeDefinition ();
2602 if (adef.IsEnum && bdef.IsEnum)
2605 Type[] aargs = a.GetGenericArguments ();
2606 Type[] bargs = b.GetGenericArguments ();
2608 if (aargs.Length != bargs.Length)
2611 for (int i = 0; i < aargs.Length; i++) {
2612 if (!IsEqual (aargs [i], bargs [i]))
2623 public static bool IsEqual (Type[] a, Type[] b)
2625 if (a == null || b == null || a.Length != b.Length)
2628 for (int i = 0; i < a.Length; ++i) {
2629 if (a [i] == null || b [i] == null) {
2636 if (!IsEqual (a [i], b [i]))
2643 public static Type DropGenericTypeArguments (Type t)
2646 if (!t.IsGenericType)
2648 // Micro-optimization: a generic typebuilder is always a generic type definition
2649 if (t is TypeBuilder)
2651 return t.GetGenericTypeDefinition ();
2657 public static MethodBase DropGenericMethodArguments (MethodBase m)
2660 if (m.IsGenericMethod)
2661 m = ((MethodInfo) m).GetGenericMethodDefinition ();
2663 Type t = m.DeclaringType;
2664 if (!t.IsGenericType || t.IsGenericTypeDefinition)
2667 t = t.GetGenericTypeDefinition ();
2668 BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic |
2669 BindingFlags.Static | BindingFlags.Instance | BindingFlags.DeclaredOnly;
2672 // TODO: use CodeGen.Module.Builder.ResolveMethod ()
2676 if (m is ConstructorInfo) {
2677 foreach (ConstructorInfo c in t.GetConstructors (bf))
2678 if (c.MetadataToken == m.MetadataToken)
2681 foreach (MethodBase mb in t.GetMethods (bf))
2682 if (mb.MetadataToken == m.MetadataToken)
2690 public static Type[] GetGenericArguments (MethodBase mi)
2693 return mi.GetGenericArguments ();
2695 return Type.EmptyTypes;
2699 public static Type[] GetTypeArguments (Type t)
2702 DeclSpace tc = LookupDeclSpace (t);
2705 return Type.EmptyTypes;
2707 TypeParameter[] tparam = tc.TypeParameters;
2708 Type[] ret = new Type [tparam.Length];
2709 for (int i = 0; i < tparam.Length; i++) {
2710 ret [i] = tparam [i].Type;
2711 if (ret [i] == null)
2712 throw new InternalErrorException ();
2717 return t.GetGenericArguments ();
2719 throw new InternalErrorException ();
2723 public static GenericConstraints GetTypeParameterConstraints (Type t)
2726 if (!t.IsGenericParameter)
2727 throw new InvalidOperationException ();
2729 TypeParameter tparam = LookupTypeParameter (t);
2731 return tparam.GenericConstraints;
2733 return ReflectionConstraints.GetConstraints (t);
2735 throw new InternalErrorException ();
2739 public static bool HasGenericArguments (Type t)
2741 return GetNumberOfTypeArguments (t) > 0;
2744 public static int GetNumberOfTypeArguments (Type t)
2747 if (t.IsGenericParameter)
2749 DeclSpace tc = LookupDeclSpace (t);
2751 return tc.IsGeneric ? tc.CountTypeParameters : 0;
2753 return t.IsGenericType ? t.GetGenericArguments ().Length : 0;
2760 /// Check whether `type' and `parent' are both instantiations of the same
2761 /// generic type. Note that we do not check the type parameters here.
2763 public static bool IsInstantiationOfSameGenericType (Type type, Type parent)
2765 int tcount = GetNumberOfTypeArguments (type);
2766 int pcount = GetNumberOfTypeArguments (parent);
2768 if (tcount != pcount)
2771 type = DropGenericTypeArguments (type);
2772 parent = DropGenericTypeArguments (parent);
2774 return type.Equals (parent);
2778 /// Whether `mb' is a generic method definition.
2780 public static bool IsGenericMethodDefinition (MethodBase mb)
2783 if (mb.DeclaringType is TypeBuilder) {
2784 IMethodData method = (IMethodData) builder_to_method [mb];
2788 return method.GenericMethod != null;
2791 return mb.IsGenericMethodDefinition;
2798 /// Whether `mb' is a generic method.
2800 public static bool IsGenericMethod (MethodBase mb)
2803 return mb.IsGenericMethod;
2809 public static bool IsNullableType (Type t)
2812 return generic_nullable_type == DropGenericTypeArguments (t);
2818 public static bool IsNullableTypeOf (Type t, Type nullable)
2821 if (!IsNullableType (t))
2824 return GetTypeArguments (t) [0] == nullable;
2830 public static bool IsNullableValueType (Type t)
2833 if (!IsNullableType (t))
2836 return GetTypeArguments (t) [0].IsValueType;
2843 #region MemberLookup implementation
2846 // Whether we allow private members in the result (since FindMembers
2847 // uses NonPublic for both protected and private), we need to distinguish.
2850 internal class Closure {
2851 internal bool private_ok;
2853 // Who is invoking us and which type is being queried currently.
2854 internal Type invocation_type;
2855 internal Type qualifier_type;
2857 // The assembly that defines the type is that is calling us
2858 internal Assembly invocation_assembly;
2859 internal IList almost_match;
2861 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2863 if (invocation_type == null)
2866 if (is_static && qualifier_type == null)
2867 // It resolved from a simple name, so it should be visible.
2870 if (IsNestedChildOf (invocation_type, m.DeclaringType))
2873 for (Type t = invocation_type; t != null; t = t.DeclaringType) {
2874 if (!IsFamilyAccessible (t, m.DeclaringType))
2877 // Although a derived class can access protected members of its base class
2878 // it cannot do so through an instance of the base class (CS1540).
2879 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2880 if (is_static || qualifier_type == null ||
2881 IsInstantiationOfSameGenericType (t, qualifier_type) ||
2882 IsFamilyAccessible (qualifier_type, t))
2886 if (almost_match != null)
2887 almost_match.Add (m);
2893 // This filter filters by name + whether it is ok to include private
2894 // members in the search
2896 internal bool Filter (MemberInfo m, object filter_criteria)
2899 // Hack: we know that the filter criteria will always be in the
2900 // `closure' // fields.
2903 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2906 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2907 (invocation_type != null) &&
2908 IsPrivateAccessible (m.DeclaringType, invocation_type))
2912 // Ugly: we need to find out the type of `m', and depending
2913 // on this, tell whether we accept or not
2915 if (m is MethodBase){
2916 MethodBase mb = (MethodBase) m;
2917 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2919 if (ma == MethodAttributes.Public)
2922 if (ma == MethodAttributes.PrivateScope)
2925 if (ma == MethodAttributes.Private)
2926 return private_ok ||
2927 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2928 IsNestedChildOf (invocation_type, m.DeclaringType);
2930 if (TypeManager.IsThisOrFriendAssembly (mb.DeclaringType.Assembly)) {
2931 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2934 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2938 // Family, FamORAssem or FamANDAssem
2939 return CheckValidFamilyAccess (mb.IsStatic, m);
2942 if (m is FieldInfo){
2943 FieldInfo fi = (FieldInfo) m;
2944 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2946 if (fa == FieldAttributes.Public)
2949 if (fa == FieldAttributes.PrivateScope)
2952 if (fa == FieldAttributes.Private)
2953 return private_ok ||
2954 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2955 IsNestedChildOf (invocation_type, m.DeclaringType);
2957 if (TypeManager.IsThisOrFriendAssembly (fi.DeclaringType.Assembly)) {
2958 if ((fa == FieldAttributes.Assembly) ||
2959 (fa == FieldAttributes.FamORAssem))
2962 if ((fa == FieldAttributes.Assembly) ||
2963 (fa == FieldAttributes.FamANDAssem))
2967 // Family, FamORAssem or FamANDAssem
2968 return CheckValidFamilyAccess (fi.IsStatic, m);
2972 // EventInfos and PropertyInfos, return true because they lack
2973 // permission information, so we need to check later on the methods.
2979 static Closure closure = new Closure ();
2980 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2983 // Looks up a member called `name' in the `queried_type'. This lookup
2984 // is done by code that is contained in the definition for `invocation_type'
2985 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2987 // `invocation_type' is used to check whether we're allowed to access the requested
2988 // member wrt its protection level.
2990 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2991 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2992 // is B and qualifier_type is A). This is used to do the CS1540 check.
2994 // When resolving a SimpleName, `qualifier_type' is null.
2996 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2997 // the same than `queried_type' - except when we're being called from BaseAccess;
2998 // in this case, `invocation_type' is the current type and `queried_type' the base
2999 // type, so this'd normally trigger a CS1540.
3001 // The binding flags are `bf' and the kind of members being looked up are `mt'
3003 // The return value always includes private members which code in `invocation_type'
3004 // is allowed to access (using the specified `qualifier_type' if given); only use
3005 // BindingFlags.NonPublic to bypass the permission check.
3007 // The 'almost_match' argument is used for reporting error CS1540.
3009 // Returns an array of a single element for everything but Methods/Constructors
3010 // that might return multiple matches.
3012 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
3013 Type queried_type, MemberTypes mt,
3014 BindingFlags original_bf, string name, IList almost_match)
3016 Timer.StartTimer (TimerType.MemberLookup);
3018 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
3019 queried_type, mt, original_bf, name, almost_match);
3021 Timer.StopTimer (TimerType.MemberLookup);
3026 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
3027 Type queried_type, MemberTypes mt,
3028 BindingFlags original_bf, string name, IList almost_match)
3030 BindingFlags bf = original_bf;
3032 ArrayList method_list = null;
3033 Type current_type = queried_type;
3034 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
3035 bool skip_iface_check = true, used_cache = false;
3036 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
3038 closure.invocation_type = invocation_type;
3039 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
3040 closure.qualifier_type = qualifier_type;
3041 closure.almost_match = almost_match;
3043 // This is from the first time we find a method
3044 // in most cases, we do not actually find a method in the base class
3045 // so we can just ignore it, and save the arraylist allocation
3046 MemberInfo [] first_members_list = null;
3047 bool use_first_members_list = false;
3053 // `NonPublic' is lame, because it includes both protected and
3054 // private methods, so we need to control this behavior by
3055 // explicitly tracking if a private method is ok or not.
3057 // The possible cases are:
3058 // public, private and protected (internal does not come into the
3061 if ((invocation_type != null) &&
3062 ((invocation_type == current_type) ||
3063 IsNestedChildOf (invocation_type, current_type)) ||
3065 bf = original_bf | BindingFlags.NonPublic;
3069 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
3071 Timer.StopTimer (TimerType.MemberLookup);
3073 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
3075 Timer.StartTimer (TimerType.MemberLookup);
3078 // When queried for an interface type, the cache will automatically check all
3079 // inherited members, so we don't need to do this here. However, this only
3080 // works if we already used the cache in the first iteration of this loop.
3082 // If we used the cache in any further iteration, we can still terminate the
3083 // loop since the cache always looks in all base classes.
3089 skip_iface_check = false;
3091 if (current_type == TypeManager.object_type)
3094 current_type = current_type.BaseType;
3097 // This happens with interfaces, they have a null
3098 // basetype. Look members up in the Object class.
3100 if (current_type == null) {
3101 current_type = TypeManager.object_type;
3106 if (list.Length == 0)
3110 // Events and types are returned by both `static' and `instance'
3111 // searches, which means that our above FindMembers will
3112 // return two copies of the same.
3114 if (list.Length == 1 && !(list [0] is MethodBase)){
3119 // Multiple properties: we query those just to find out the indexer
3122 if (list [0] is PropertyInfo)
3126 // We found an event: the cache lookup returns both the event and
3127 // its private field.
3129 if (list [0] is EventInfo) {
3130 if ((list.Length == 2) && (list [1] is FieldInfo))
3131 return new MemberInfo [] { list [0] };
3137 // We found methods, turn the search into "method scan"
3141 if (first_members_list != null) {
3142 if (use_first_members_list) {
3143 method_list = CopyNewMethods (method_list, first_members_list);
3144 use_first_members_list = false;
3147 method_list = CopyNewMethods (method_list, list);
3149 first_members_list = list;
3150 use_first_members_list = true;
3151 mt &= (MemberTypes.Method | MemberTypes.Constructor);
3153 } while (searching);
3155 if (use_first_members_list)
3156 return first_members_list;
3158 if (method_list != null && method_list.Count > 0) {
3159 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3162 // This happens if we already used the cache in the first iteration, in this case
3163 // the cache already looked in all interfaces.
3165 if (skip_iface_check)
3169 // Interfaces do not list members they inherit, so we have to
3172 if (!queried_type.IsInterface)
3175 if (queried_type.IsArray)
3176 queried_type = TypeManager.array_type;
3178 Type [] ifaces = GetInterfaces (queried_type);
3182 foreach (Type itype in ifaces){
3185 x = MemberLookup (null, null, itype, mt, bf, name, null);
3193 const BindingFlags AllMembers = BindingFlags.Public | BindingFlags.NonPublic |
3194 BindingFlags.Static | BindingFlags.Instance |
3195 BindingFlags.DeclaredOnly;
3197 // Currently is designed to work with external types only
3198 public static PropertyInfo GetPropertyFromAccessor (MethodBase mb)
3200 if (!mb.IsSpecialName)
3203 string name = mb.Name;
3204 if (name.Length < 5)
3207 if (name [3] != '_')
3210 if (name.StartsWith ("get") || name.StartsWith ("set")) {
3211 MemberInfo[] pi = mb.DeclaringType.FindMembers (MemberTypes.Property, AllMembers,
3212 Type.FilterName, name.Substring (4));
3217 // This can happen when property is indexer (it can have same name but different parameters)
3218 foreach (PropertyInfo p in pi) {
3219 foreach (MethodInfo p_mi in p.GetAccessors (true)) {
3220 if (p_mi == mb || TypeManager.GetParameterData (p_mi).Equals (TypeManager.GetParameterData (mb)))
3229 // Currently is designed to work with external types only
3230 public static MemberInfo GetEventFromAccessor (MethodBase mb)
3232 if (!mb.IsSpecialName)
3235 string name = mb.Name;
3236 if (name.Length < 5)
3239 if (name.StartsWith ("add_"))
3240 return mb.DeclaringType.GetEvent (name.Substring (4), AllMembers);
3242 if (name.StartsWith ("remove_"))
3243 return mb.DeclaringType.GetEvent (name.Substring (7), AllMembers);
3248 // Tests whether external method is really special
3249 public static bool IsSpecialMethod (MethodBase mb)
3251 if (!mb.IsSpecialName)
3254 IMethodData md = TypeManager.GetMethod (mb);
3256 return (md is AbstractPropertyEventMethod || md is Operator);
3258 PropertyInfo pi = GetPropertyFromAccessor (mb);
3260 return IsValidProperty (pi);
3262 if (GetEventFromAccessor (mb) != null)
3265 string name = mb.Name;
3266 if (name.StartsWith ("op_"))
3267 return Operator.GetName (name) != null;
3272 // Tests whether imported property is valid C# property.
3273 // TODO: It seems to me that we should do a lot of sanity tests before
3274 // we accept property as C# property
3275 static bool IsValidProperty (PropertyInfo pi)
3277 MethodInfo get_method = pi.GetGetMethod (true);
3278 MethodInfo set_method = pi.GetSetMethod (true);
3281 if (get_method != null && set_method != null) {
3282 g_count = get_method.GetParameters ().Length;
3283 s_count = set_method.GetParameters ().Length;
3284 if (g_count + 1 != s_count)
3286 } else if (get_method != null) {
3287 g_count = get_method.GetParameters ().Length;
3288 } else if (set_method != null) {
3289 s_count = set_method.GetParameters ().Length;
3293 // DefaultMemberName and indexer name has to match to identify valid C# indexer
3295 if ((s_count > 1 || g_count > 0) && TypeManager.default_member_type != null) {
3296 object[] o = pi.DeclaringType.GetCustomAttributes (TypeManager.default_member_type, false);
3300 DefaultMemberAttribute dma = (DefaultMemberAttribute) o [0];
3301 if (dma.MemberName != pi.Name)
3303 if (get_method != null && "get_" + dma.MemberName != get_method.Name)
3305 if (set_method != null && "set_" + dma.MemberName != set_method.Name)
3317 /// There is exactly one instance of this class per type.
3319 public sealed class TypeHandle : IMemberContainer {
3320 public readonly IMemberContainer BaseType;
3322 readonly int id = ++next_id;
3323 static int next_id = 0;
3325 static TypeHandle ()
3331 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3332 /// a TypeHandle yet, a new instance of it is created. This static method
3333 /// ensures that we'll only have one TypeHandle instance per type.
3335 private static TypeHandle GetTypeHandle (Type t)
3337 TypeHandle handle = (TypeHandle) type_hash [t];
3341 handle = new TypeHandle (t);
3342 type_hash.Add (t, handle);
3346 public static MemberCache GetMemberCache (Type t)
3348 return GetTypeHandle (t).MemberCache;
3351 public static void CleanUp ()
3356 public static void Reset ()
3358 type_hash = new PtrHashtable ();
3362 /// Returns the TypeHandle for TypeManager.object_type.
3364 public static IMemberContainer ObjectType {
3366 if (object_type != null)
3369 object_type = GetTypeHandle (TypeManager.object_type);
3376 /// Returns the TypeHandle for TypeManager.array_type.
3378 public static TypeHandle ArrayType {
3380 if (array_type != null)
3383 array_type = GetTypeHandle (TypeManager.array_type);
3389 private static PtrHashtable type_hash;
3391 private static TypeHandle object_type = null;
3392 private static TypeHandle array_type = null;
3395 private string full_name;
3396 private bool is_interface;
3397 private MemberCache member_cache;
3398 private MemberCache base_cache;
3400 private TypeHandle (Type type)
3403 full_name = type.FullName != null ? type.FullName : type.Name;
3404 if (type.BaseType != null) {
3405 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3406 BaseType = base_cache.Container;
3407 } else if (type.IsInterface)
3408 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3409 this.is_interface = type.IsInterface || TypeManager.IsGenericParameter (type);
3410 this.member_cache = new MemberCache (this);
3413 // IMemberContainer methods
3415 public string Name {
3427 public MemberCache BaseCache {
3433 public bool IsInterface {
3435 return is_interface;
3439 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3441 MemberInfo [] members;
3444 if (type is GenericTypeParameterBuilder)
3445 return MemberList.Empty;
3448 if (mt == MemberTypes.Event)
3449 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3451 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3454 if (members.Length == 0)
3455 return MemberList.Empty;
3457 Array.Reverse (members);
3458 return new MemberList (members);
3461 // IMemberFinder methods
3463 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3464 MemberFilter filter, object criteria)
3466 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3469 public MemberCache MemberCache {
3471 return member_cache;
3475 public override string ToString ()
3477 if (BaseType != null)
3478 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3480 return "TypeHandle (" + id + "," + Name + ")";