2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
6 // Marek Safar (marek.safar@seznam.cz)
8 // Licensed under the terms of the GNU GPL
10 // (C) 2001 Ximian, Inc (http://www.ximian.com)
15 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
16 // the behavior of the compilation. This can be removed if we rework
17 // the code to get a list of namespaces available.
19 #define SIMPLE_SPEEDUP
23 using System.Globalization;
24 using System.Collections;
25 using System.Reflection;
26 using System.Reflection.Emit;
28 using System.Text.RegularExpressions;
29 using System.Runtime.CompilerServices;
30 using System.Diagnostics;
32 namespace Mono.CSharp {
34 public partial class TypeManager {
36 // A list of core types that the compiler requires or uses
38 static public Type object_type;
39 static public Type value_type;
40 static public Type string_type;
41 static public Type int32_type;
42 static public Type uint32_type;
43 static public Type int64_type;
44 static public Type uint64_type;
45 static public Type float_type;
46 static public Type double_type;
47 static public Type char_type;
48 static public Type char_ptr_type;
49 static public Type short_type;
50 static public Type decimal_type;
51 static public Type bool_type;
52 static public Type sbyte_type;
53 static public Type byte_type;
54 static public Type ushort_type;
55 static public Type enum_type;
56 static public Type delegate_type;
57 static public Type multicast_delegate_type;
58 static public Type void_type;
59 static public Type null_type;
60 static public Type enumeration_type;
61 static public Type array_type;
62 static public Type runtime_handle_type;
63 static public Type icloneable_type;
64 static public Type type_type;
65 static public Type ienumerator_type;
66 static public Type ienumerable_type;
67 static public Type idisposable_type;
68 static public Type iconvertible_type;
69 static public Type default_member_type;
70 static public Type iasyncresult_type;
71 static public Type asynccallback_type;
72 static public Type intptr_type;
73 static public Type monitor_type;
74 static public Type runtime_field_handle_type;
75 static public Type runtime_argument_handle_type;
76 static public Type attribute_type;
77 static public Type attribute_usage_type;
78 static public Type decimal_constant_attribute_type;
79 static public Type dllimport_type;
80 static public Type unverifiable_code_type;
81 static public Type methodimpl_attr_type;
82 static public Type marshal_as_attr_type;
83 static public Type param_array_type;
84 static public Type void_ptr_type;
85 static public Type indexer_name_type;
86 static public Type exception_type;
87 static public Type invalid_operation_exception_type;
88 static public Type not_supported_exception_type;
89 static public Type obsolete_attribute_type;
90 static public Type conditional_attribute_type;
91 static public Type in_attribute_type;
92 static public Type out_attribute_type;
93 static public Type default_parameter_value_attribute_type;
95 static public Type anonymous_method_type;
96 static public Type cls_compliant_attribute_type;
97 static public Type typed_reference_type;
98 static public Type arg_iterator_type;
99 static public Type mbr_type;
100 static public Type struct_layout_attribute_type;
101 static public Type field_offset_attribute_type;
102 static public Type security_attr_type;
103 static public Type required_attr_type;
104 static public Type guid_attr_type;
105 static public Type assembly_culture_attribute_type;
106 static public Type coclass_attr_type;
107 static public Type comimport_attr_type;
112 static internal Type runtime_compatibility_attr_type;
113 static internal Type compiler_generated_attr_type;
114 static internal Type fixed_buffer_attr_type;
115 static internal Type default_charset_type;
116 static internal Type internals_visible_attr_type;
119 // Expressions representing the internal types. Used during declaration
122 static public TypeExpr system_object_expr, system_string_expr;
123 static public TypeExpr system_boolean_expr, system_decimal_expr;
124 static public TypeExpr system_single_expr, system_double_expr;
125 static public TypeExpr system_sbyte_expr, system_byte_expr;
126 static public TypeExpr system_int16_expr, system_uint16_expr;
127 static public TypeExpr system_int32_expr, system_uint32_expr;
128 static public TypeExpr system_int64_expr, system_uint64_expr;
129 static public TypeExpr system_char_expr, system_void_expr;
130 static public TypeExpr system_asynccallback_expr;
131 static public TypeExpr system_iasyncresult_expr;
132 static public TypeExpr system_valuetype_expr;
133 static public TypeExpr system_intptr_expr;
136 // This is only used when compiling corlib
138 static public Type system_int32_type;
139 static public Type system_array_type;
140 static public Type system_type_type;
141 static public Type system_assemblybuilder_type;
142 static public MethodInfo system_int_array_get_length;
143 static public MethodInfo system_int_array_get_rank;
144 static public MethodInfo system_object_array_clone;
145 static public MethodInfo system_int_array_get_length_int;
146 static public MethodInfo system_int_array_get_lower_bound_int;
147 static public MethodInfo system_int_array_get_upper_bound_int;
148 static public MethodInfo system_void_array_copyto_array_int;
152 // Internal, not really used outside
154 static Type runtime_helpers_type;
157 // These methods are called by code generated by the compiler
159 static public MethodInfo string_concat_string_string;
160 static public MethodInfo string_concat_string_string_string;
161 static public MethodInfo string_concat_string_string_string_string;
162 static public MethodInfo string_concat_string_dot_dot_dot;
163 static public MethodInfo string_concat_object_object;
164 static public MethodInfo string_concat_object_object_object;
165 static public MethodInfo string_concat_object_dot_dot_dot;
166 static public MethodInfo string_isinterneted_string;
167 static public MethodInfo system_type_get_type_from_handle;
168 static public MethodInfo bool_movenext_void;
169 static public MethodInfo ienumerable_getenumerator_void;
170 static public MethodInfo void_reset_void;
171 static public MethodInfo void_dispose_void;
172 static public MethodInfo void_monitor_enter_object;
173 static public MethodInfo void_monitor_exit_object;
174 static public MethodInfo void_initializearray_array_fieldhandle;
175 static public MethodInfo int_getlength_int;
176 static public MethodInfo delegate_combine_delegate_delegate;
177 static public MethodInfo delegate_remove_delegate_delegate;
178 static public MethodInfo int_get_offset_to_string_data;
179 static public MethodInfo int_array_get_length;
180 static public MethodInfo int_array_get_rank;
181 static public MethodInfo object_array_clone;
182 static public MethodInfo int_array_get_length_int;
183 static public MethodInfo int_array_get_lower_bound_int;
184 static public MethodInfo int_array_get_upper_bound_int;
185 static public MethodInfo void_array_copyto_array_int;
186 static public PropertyInfo ienumerator_getcurrent;
189 // The attribute constructors.
191 static public ConstructorInfo object_ctor;
192 static private ConstructorInfo cons_param_array_attribute;
193 static public ConstructorInfo void_decimal_ctor_five_args;
194 static public ConstructorInfo void_decimal_ctor_int_arg;
195 static public ConstructorInfo unverifiable_code_ctor;
196 static public ConstructorInfo default_member_ctor;
197 static public ConstructorInfo decimal_constant_attribute_ctor;
198 static internal ConstructorInfo struct_layout_attribute_ctor;
199 static public ConstructorInfo field_offset_attribute_ctor;
204 static internal CustomAttributeBuilder compiler_generated_attr;
205 static internal ConstructorInfo fixed_buffer_attr_ctor;
207 static PtrHashtable builder_to_declspace;
209 static PtrHashtable builder_to_member_cache;
212 // Tracks the interfaces implemented by typebuilders. We only
213 // enter those who do implement or or more interfaces
215 static PtrHashtable builder_to_ifaces;
218 // Maps PropertyBuilder to a Type array that contains
219 // the arguments to the indexer
221 static Hashtable indexer_arguments;
224 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
226 static Hashtable method_params;
229 // A hash table from override methods to their base virtual method.
231 static Hashtable method_overrides;
234 // Keeps track of methods
237 static Hashtable builder_to_method;
240 // Contains all public types from referenced assemblies.
241 // This member is used only if CLS Compliance verification is required.
243 public static Hashtable AllClsTopLevelTypes;
245 static Hashtable fieldbuilders_to_fields;
246 static Hashtable propertybuilder_to_property;
247 static Hashtable fields;
248 static Hashtable events;
250 static PtrHashtable assembly_internals_vis_attrs;
257 public static void CleanUp ()
259 // Lets get everything clean so that we can collect before generating code
260 builder_to_declspace = null;
261 builder_to_member_cache = null;
262 builder_to_ifaces = null;
263 indexer_arguments = null;
264 method_params = null;
265 builder_to_method = null;
268 fieldbuilders_to_fields = null;
270 priv_fields_events = null;
272 propertybuilder_to_property = null;
274 assembly_internals_vis_attrs = null;
277 TypeHandle.CleanUp ();
281 /// A filter for Findmembers that uses the Signature object to
284 static bool SignatureFilter (MemberInfo mi, object criteria)
286 Signature sig = (Signature) criteria;
288 if (!(mi is MethodBase))
291 if (mi.Name != sig.name)
294 int count = sig.args.Length;
296 if (mi is MethodBuilder || mi is ConstructorBuilder){
297 Type [] candidate_args = GetParameterData ((MethodBase) mi).Types;
299 if (candidate_args.Length != count)
302 for (int i = 0; i < count; i++)
303 if (candidate_args [i] != sig.args [i])
308 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
310 if (pars.Length != count)
313 for (int i = 0; i < count; i++)
314 if (pars [i].ParameterType != sig.args [i])
320 // A delegate that points to the filter above.
321 static MemberFilter signature_filter;
324 // These are expressions that represent some of the internal data types, used
327 static void InitExpressionTypes ()
329 system_object_expr = new TypeLookupExpression ("System.Object");
330 system_string_expr = new TypeLookupExpression ("System.String");
331 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
332 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
333 system_single_expr = new TypeLookupExpression ("System.Single");
334 system_double_expr = new TypeLookupExpression ("System.Double");
335 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
336 system_byte_expr = new TypeLookupExpression ("System.Byte");
337 system_int16_expr = new TypeLookupExpression ("System.Int16");
338 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
339 system_int32_expr = new TypeLookupExpression ("System.Int32");
340 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
341 system_int64_expr = new TypeLookupExpression ("System.Int64");
342 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
343 system_char_expr = new TypeLookupExpression ("System.Char");
344 system_void_expr = new TypeLookupExpression ("System.Void");
345 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
346 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
347 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
348 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
351 static TypeManager ()
355 signature_filter = new MemberFilter (SignatureFilter);
356 InitExpressionTypes ();
359 static public void Reset ()
361 builder_to_declspace = new PtrHashtable ();
362 builder_to_member_cache = new PtrHashtable ();
363 builder_to_method = new PtrHashtable ();
364 method_params = new PtrHashtable ();
365 method_overrides = new PtrHashtable ();
366 indexer_arguments = new PtrHashtable ();
367 builder_to_ifaces = new PtrHashtable ();
369 fieldbuilders_to_fields = new Hashtable ();
370 propertybuilder_to_property = new Hashtable ();
371 fields = new Hashtable ();
372 type_hash = new DoubleHash ();
374 assembly_internals_vis_attrs = new PtrHashtable ();
378 // to uncover regressions
379 cons_param_array_attribute = null;
382 public static void AddUserType (DeclSpace ds)
384 builder_to_declspace.Add (ds.TypeBuilder, ds);
388 // This entry point is used by types that we define under the covers
390 public static void RegisterBuilder (Type tb, Type [] ifaces)
393 builder_to_ifaces [tb] = ifaces;
396 public static void AddMethod (MethodBase builder, IMethodData method)
398 builder_to_method.Add (builder, method);
399 method_params.Add (builder, method.ParameterInfo);
402 public static IMethodData GetMethod (MethodBase builder)
404 return (IMethodData) builder_to_method [builder];
408 /// Returns the DeclSpace whose Type is `t' or null if there is no
409 /// DeclSpace for `t' (ie, the Type comes from a library)
411 public static DeclSpace LookupDeclSpace (Type t)
413 return builder_to_declspace [t] as DeclSpace;
417 /// Returns the TypeContainer whose Type is `t' or null if there is no
418 /// TypeContainer for `t' (ie, the Type comes from a library)
420 public static TypeContainer LookupTypeContainer (Type t)
422 return builder_to_declspace [t] as TypeContainer;
425 public static MemberCache LookupMemberCache (Type t)
427 if (t is TypeBuilder) {
428 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
429 if (container != null)
430 return container.MemberCache;
433 if (t is GenericTypeParameterBuilder) {
434 IMemberContainer container = builder_to_type_param [t] as IMemberContainer;
436 if (container != null)
437 return container.MemberCache;
440 return TypeHandle.GetMemberCache (t);
443 public static MemberCache LookupBaseInterfacesCache (Type t)
445 Type [] ifaces = GetInterfaces (t);
447 if (ifaces != null && ifaces.Length == 1)
448 return LookupMemberCache (ifaces [0]);
450 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
451 MemberCache cache = builder_to_member_cache [t] as MemberCache;
455 cache = new MemberCache (ifaces);
456 builder_to_member_cache.Add (t, cache);
460 public static TypeContainer LookupInterface (Type t)
462 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
463 if ((tc == null) || (tc.Kind != Kind.Interface))
469 public static Delegate LookupDelegate (Type t)
471 return builder_to_declspace [t] as Delegate;
474 public static Class LookupClass (Type t)
476 return (Class) builder_to_declspace [t];
480 // We use this hash for multiple kinds of constructed types:
482 // (T, "&") Given T, get T &
483 // (T, "*") Given T, get T *
484 // (T, "[]") Given T and a array dimension, get T []
485 // (T, X) Given a type T and a simple name X, get the type T+X
487 // Accessibility tests, if necessary, should be done by the user
489 static DoubleHash type_hash = new DoubleHash ();
492 // Gets the reference to T version of the Type (T&)
494 public static Type GetReferenceType (Type t)
496 return t.MakeByRefType ();
500 // Gets the pointer to T version of the Type (T*)
502 public static Type GetPointerType (Type t)
504 return GetConstructedType (t, "*");
507 public static Type GetConstructedType (Type t, string dim)
510 if (type_hash.Lookup (t, dim, out ret))
513 ret = t.Module.GetType (t.ToString () + dim);
515 type_hash.Insert (t, dim, ret);
520 ret = GetReferenceType (t);
521 type_hash.Insert (t, dim, ret);
525 if (t.IsGenericParameter || t.IsGenericType) {
528 while ((pos < dim.Length) && (dim [pos] == '[')) {
531 if (dim [pos] == ']') {
532 result = result.MakeArrayType ();
535 if (pos < dim.Length)
538 type_hash.Insert (t, dim, result);
543 while (dim [pos] == ',') {
547 if ((dim [pos] != ']') || (pos != dim.Length-1))
550 result = result.MakeArrayType (rank + 1);
551 type_hash.Insert (t, dim, result);
556 type_hash.Insert (t, dim, null);
560 public static Type GetNestedType (Type t, string name)
563 if (!type_hash.Lookup (t, name, out ret)) {
564 ret = t.GetNestedType (name,
565 BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);
566 type_hash.Insert (t, name, ret);
572 /// Fills static table with exported types from all referenced assemblies.
573 /// This information is required for CLS Compliance tests.
575 public static void LoadAllImportedTypes ()
577 AllClsTopLevelTypes = new Hashtable (1500);
578 foreach (Assembly a in RootNamespace.Global.Assemblies) {
579 foreach (Type t in a.GetExportedTypes ()) {
580 AllClsTopLevelTypes [t.FullName.ToLower (System.Globalization.CultureInfo.InvariantCulture)] = null;
585 public static bool NamespaceClash (string name, Location loc)
587 if (! RootNamespace.Global.IsNamespace (name))
590 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
595 /// Returns the C# name of a type if possible, or the full type name otherwise
597 static public string CSharpName (Type t)
599 if (IsNullableType (t) && !t.IsGenericTypeDefinition) {
600 t = GetTypeArguments (t) [0];
601 return CSharpName (t) + "?";
604 string name = GetFullName (t);
606 return Regex.Replace (name,
608 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
609 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
610 @"Boolean|String|Void|Null)" +
612 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
615 static public string CSharpName (Type[] types)
617 StringBuilder sb = new StringBuilder ();
618 foreach (Type t in types) {
619 sb.Append (CSharpName (t));
622 sb.Remove (sb.Length - 1, 1);
623 return sb.ToString ();
626 static String CSharpNameMatch (Match match)
628 string s = match.Groups [1].Captures [0].Value;
630 Replace ("int32", "int").
631 Replace ("uint32", "uint").
632 Replace ("int16", "short").
633 Replace ("uint16", "ushort").
634 Replace ("int64", "long").
635 Replace ("uint64", "ulong").
636 Replace ("single", "float").
637 Replace ("boolean", "bool")
638 + match.Groups [2].Captures [0].Value;
642 /// Returns the signature of the method with full namespace classification
644 static public string GetFullNameSignature (MemberInfo mi)
646 PropertyInfo pi = mi as PropertyInfo;
648 MethodBase pmi = pi.GetGetMethod (true);
650 pmi = pi.GetSetMethod (true);
651 if (GetParameterData (pmi).Count > 0)
654 return (mi is MethodBase)
655 ? CSharpSignature (mi as MethodBase)
656 : CSharpName (mi.DeclaringType) + '.' + mi.Name;
659 private static int GetFullName (Type t, StringBuilder sb)
663 if (!t.IsGenericType) {
664 sb.Append (t.FullName);
668 if (t.DeclaringType != null) {
669 pos = GetFullName (t.DeclaringType, sb);
671 sb.Append (RemoveGenericArity (t.Name));
673 sb.Append (RemoveGenericArity (t.FullName));
676 Type[] this_args = GetTypeArguments (t);
678 if (this_args.Length < pos)
679 throw new InternalErrorException (
680 "Enclosing class " + t.DeclaringType + " has more type arguments than " + t);
681 if (this_args.Length == pos)
686 sb.Append (CSharpName (this_args [pos++]));
687 if (pos == this_args.Length)
695 public static string GetFullName (Type t)
697 if (t.IsGenericParameter)
699 if (!t.IsGenericType)
702 StringBuilder sb = new StringBuilder ();
703 int pos = GetFullName (t, sb);
705 throw new InternalErrorException ("Generic Type " + t + " doesn't have type arguments");
706 return sb.ToString ();
709 static string RemoveGenericArity (string from)
711 int i = from.IndexOf ('`');
713 return from.Substring (0, i);
718 /// When we need to report accessors as well
720 static public string CSharpSignature (MethodBase mb)
722 return CSharpSignature (mb, false);
726 /// Returns the signature of the method
728 static public string CSharpSignature (MethodBase mb, bool show_accessor)
730 StringBuilder sig = new StringBuilder (CSharpName (mb.DeclaringType));
733 ParameterData iparams = GetParameterData (mb);
734 string parameters = iparams.GetSignatureForError ();
735 string accessor = "";
738 if (mb.IsSpecialName) {
739 Operator.OpType ot = Operator.GetOperatorType (mb.Name);
740 if (ot != Operator.OpType.TOP) {
741 sig.Append ("operator ");
742 sig.Append (Operator.GetName (ot));
743 sig.Append (parameters);
744 return sig.ToString ();
747 if (mb.Name.StartsWith ("get_") || mb.Name.StartsWith ("set_")) {
748 accessor = mb.Name.Substring (0, 3);
753 if (mb.IsSpecialName && !mb.IsConstructor) {
754 if (iparams.Count > (mb.Name.StartsWith ("get_") ? 0 : 1)) {
755 sig.Append ("this[");
757 sig.Append (parameters.Substring (1, parameters.Length - 2));
760 int before_ret_val = parameters.LastIndexOf (',');
761 if (before_ret_val < 0)
762 sig.Append (parameters.Substring (1, parameters.Length - 2));
764 sig.Append (parameters.Substring (1, before_ret_val - 1));
768 sig.Append (mb.Name.Substring (4));
771 if (mb.Name == ".ctor")
772 sig.Append (mb.DeclaringType.Name);
774 sig.Append (mb.Name);
776 if (TypeManager.IsGenericMethod (mb)) {
777 Type[] args = mb.GetGenericArguments ();
779 for (int i = 0; i < args.Length; i++) {
782 sig.Append (args [i].Name);
788 sig.Append (parameters);
791 if (show_accessor && accessor.Length > 0) {
793 sig.Append (accessor);
796 return sig.ToString ();
799 public static string GetMethodName (MethodInfo m)
801 if (!IsGenericMethodDefinition (m) && !IsGenericMethod (m))
804 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
807 static public string CSharpSignature (EventInfo ei)
809 return CSharpName (ei.DeclaringType) + '.' + ei.Name;
813 /// Looks up a type, and aborts if it is not found. This is used
814 /// by types required by the compiler
816 static Type CoreLookupType (string ns_name, string name)
818 Namespace ns = RootNamespace.Global.GetNamespace (ns_name, true);
819 FullNamedExpression fne = ns.Lookup (RootContext.Tree.Types, name, Location.Null);
820 Type t = fne == null ? null : fne.Type;
822 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
827 /// Returns the MethodInfo for a method named `name' defined
828 /// in type `t' which takes arguments of types `args'
830 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
834 BindingFlags flags = instance_and_static | BindingFlags.Public;
840 flags |= BindingFlags.NonPublic;
842 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
843 if (list.Count == 0) {
845 Report.Error (-19, "Can not find the core function `" + name + "'");
849 MethodInfo mi = list [0] as MethodInfo;
852 Report.Error (-19, "Can not find the core function `" + name + "'");
859 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
861 return GetMethod (t, name, args, false, report_errors);
864 static MethodInfo GetMethod (Type t, string name, Type [] args)
866 return GetMethod (t, name, args, true);
870 /// Returns the PropertyInfo for a property named `name' defined
873 public static PropertyInfo GetProperty (Type t, string name)
875 MemberList list = FindMembers (t, MemberTypes.Property, BindingFlags.Public |
876 BindingFlags.Instance, Type.FilterName, name);
877 if (list.Count == 0) {
878 Report.Error (-19, "Can not find the core property `" + name + "'");
882 PropertyInfo pi = list [0] as PropertyInfo;
884 Report.Error (-19, "Can not find the core function `" + name + "'");
892 /// Returns the ConstructorInfo for "args"
894 public static ConstructorInfo GetConstructor (Type t, Type [] args)
903 throw new InternalErrorException ("Core types haven't been initialized yet?");
905 list = FindMembers (t, MemberTypes.Constructor,
906 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
907 signature_filter, sig);
908 if (list.Count == 0){
909 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
913 ConstructorInfo ci = list [0] as ConstructorInfo;
915 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
922 public static void InitEnumUnderlyingTypes ()
925 int32_type = CoreLookupType ("System", "Int32");
926 int64_type = CoreLookupType ("System", "Int64");
927 uint32_type = CoreLookupType ("System", "UInt32");
928 uint64_type = CoreLookupType ("System", "UInt64");
929 byte_type = CoreLookupType ("System", "Byte");
930 sbyte_type = CoreLookupType ("System", "SByte");
931 short_type = CoreLookupType ("System", "Int16");
932 ushort_type = CoreLookupType ("System", "UInt16");
936 /// The types have to be initialized after the initial
937 /// population of the type has happened (for example, to
938 /// bootstrap the corlib.dll
940 public static void InitCoreTypes ()
942 object_type = CoreLookupType ("System", "Object");
943 value_type = CoreLookupType ("System", "ValueType");
945 InitEnumUnderlyingTypes ();
947 char_type = CoreLookupType ("System", "Char");
948 string_type = CoreLookupType ("System", "String");
949 float_type = CoreLookupType ("System", "Single");
950 double_type = CoreLookupType ("System", "Double");
951 char_ptr_type = GetPointerType (char_type);
952 decimal_type = CoreLookupType ("System", "Decimal");
953 bool_type = CoreLookupType ("System", "Boolean");
954 enum_type = CoreLookupType ("System", "Enum");
956 multicast_delegate_type = CoreLookupType ("System", "MulticastDelegate");
957 delegate_type = CoreLookupType ("System", "Delegate");
959 array_type = CoreLookupType ("System", "Array");
960 void_type = CoreLookupType ("System", "Void");
961 type_type = CoreLookupType ("System", "Type");
963 runtime_field_handle_type = CoreLookupType ("System", "RuntimeFieldHandle");
964 runtime_argument_handle_type = CoreLookupType ("System", "RuntimeArgumentHandle");
965 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeHelpers");
966 default_member_type = CoreLookupType ("System.Reflection", "DefaultMemberAttribute");
967 runtime_handle_type = CoreLookupType ("System", "RuntimeTypeHandle");
968 asynccallback_type = CoreLookupType ("System", "AsyncCallback");
969 iasyncresult_type = CoreLookupType ("System", "IAsyncResult");
970 ienumerator_type = CoreLookupType ("System.Collections", "IEnumerator");
971 ienumerable_type = CoreLookupType ("System.Collections", "IEnumerable");
972 idisposable_type = CoreLookupType ("System", "IDisposable");
973 icloneable_type = CoreLookupType ("System", "ICloneable");
974 iconvertible_type = CoreLookupType ("System", "IConvertible");
975 monitor_type = CoreLookupType ("System.Threading", "Monitor");
976 intptr_type = CoreLookupType ("System", "IntPtr");
978 attribute_type = CoreLookupType ("System", "Attribute");
979 attribute_usage_type = CoreLookupType ("System", "AttributeUsageAttribute");
980 dllimport_type = CoreLookupType ("System.Runtime.InteropServices", "DllImportAttribute");
981 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "MethodImplAttribute");
982 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices", "MarshalAsAttribute");
983 param_array_type = CoreLookupType ("System", "ParamArrayAttribute");
984 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "InAttribute");
985 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "OutAttribute");
987 default_parameter_value_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultParameterValueAttribute");
989 typed_reference_type = CoreLookupType ("System", "TypedReference");
990 arg_iterator_type = CoreLookupType ("System", "ArgIterator");
991 mbr_type = CoreLookupType ("System", "MarshalByRefObject");
992 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices", "DecimalConstantAttribute");
994 unverifiable_code_type= CoreLookupType ("System.Security", "UnverifiableCodeAttribute");
996 void_ptr_type = GetPointerType (void_type);
998 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices", "IndexerNameAttribute");
1000 exception_type = CoreLookupType ("System", "Exception");
1001 invalid_operation_exception_type = CoreLookupType ("System", "InvalidOperationException");
1002 not_supported_exception_type = CoreLookupType ("System", "NotSupportedException");
1007 obsolete_attribute_type = CoreLookupType ("System", "ObsoleteAttribute");
1008 conditional_attribute_type = CoreLookupType ("System.Diagnostics", "ConditionalAttribute");
1009 cls_compliant_attribute_type = CoreLookupType ("System", "CLSCompliantAttribute");
1010 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "StructLayoutAttribute");
1011 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices", "FieldOffsetAttribute");
1012 security_attr_type = CoreLookupType ("System.Security.Permissions", "SecurityAttribute");
1013 required_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RequiredAttributeAttribute");
1014 guid_attr_type = CoreLookupType ("System.Runtime.InteropServices", "GuidAttribute");
1015 assembly_culture_attribute_type = CoreLookupType ("System.Reflection", "AssemblyCultureAttribute");
1016 comimport_attr_type = CoreLookupType ("System.Runtime.InteropServices", "ComImportAttribute");
1017 coclass_attr_type = CoreLookupType ("System.Runtime.InteropServices", "CoClassAttribute");
1019 InitGenericCoreTypes ();
1024 compiler_generated_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "CompilerGeneratedAttribute");
1025 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "FixedBufferAttribute");
1026 default_charset_type = CoreLookupType ("System.Runtime.InteropServices", "DefaultCharSetAttribute");
1027 internals_visible_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "InternalsVisibleToAttribute");
1028 runtime_compatibility_attr_type = CoreLookupType ("System.Runtime.CompilerServices", "RuntimeCompatibilityAttribute");
1030 // When compiling corlib, store the "real" types here.
1032 if (!RootContext.StdLib) {
1033 system_int32_type = typeof (System.Int32);
1034 system_array_type = typeof (System.Array);
1035 system_type_type = typeof (System.Type);
1036 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1038 system_int_array_get_length = GetMethod (
1039 system_array_type, "get_Length", Type.EmptyTypes);
1040 system_int_array_get_rank = GetMethod (
1041 system_array_type, "get_Rank", Type.EmptyTypes);
1042 system_object_array_clone = GetMethod (
1043 system_array_type, "Clone", Type.EmptyTypes);
1045 Type [] system_int_arg = { system_int32_type };
1046 system_int_array_get_length_int = GetMethod (
1047 system_array_type, "GetLength", system_int_arg);
1048 system_int_array_get_upper_bound_int = GetMethod (
1049 system_array_type, "GetUpperBound", system_int_arg);
1050 system_int_array_get_lower_bound_int = GetMethod (
1051 system_array_type, "GetLowerBound", system_int_arg);
1053 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1054 system_void_array_copyto_array_int = GetMethod (
1055 system_array_type, "CopyTo", system_array_int_arg);
1057 Type [] system_3_type_arg = {
1058 system_type_type, system_type_type, system_type_type };
1059 Type [] system_4_type_arg = {
1060 system_type_type, system_type_type, system_type_type, system_type_type };
1062 MethodInfo set_corlib_type_builders = GetMethod (
1063 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1064 system_4_type_arg, true, false);
1066 if (set_corlib_type_builders != null) {
1067 object[] args = new object [4];
1068 args [0] = object_type;
1069 args [1] = value_type;
1070 args [2] = enum_type;
1071 args [3] = void_type;
1073 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1075 // Compatibility for an older version of the class libs.
1076 set_corlib_type_builders = GetMethod (
1077 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1078 system_3_type_arg, true, true);
1080 if (set_corlib_type_builders == null) {
1081 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1085 object[] args = new object [3];
1086 args [0] = object_type;
1087 args [1] = value_type;
1088 args [2] = enum_type;
1090 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1094 system_object_expr.Type = object_type;
1095 system_string_expr.Type = string_type;
1096 system_boolean_expr.Type = bool_type;
1097 system_decimal_expr.Type = decimal_type;
1098 system_single_expr.Type = float_type;
1099 system_double_expr.Type = double_type;
1100 system_sbyte_expr.Type = sbyte_type;
1101 system_byte_expr.Type = byte_type;
1102 system_int16_expr.Type = short_type;
1103 system_uint16_expr.Type = ushort_type;
1104 system_int32_expr.Type = int32_type;
1105 system_uint32_expr.Type = uint32_type;
1106 system_int64_expr.Type = int64_type;
1107 system_uint64_expr.Type = uint64_type;
1108 system_char_expr.Type = char_type;
1109 system_void_expr.Type = void_type;
1110 system_asynccallback_expr.Type = asynccallback_type;
1111 system_iasyncresult_expr.Type = iasyncresult_type;
1112 system_valuetype_expr.Type = value_type;
1115 // These are only used for compare purposes
1117 anonymous_method_type = typeof (AnonymousMethod);
1118 null_type = typeof (NullType);
1122 // The helper methods that are used by the compiler
1124 public static void InitCodeHelpers ()
1127 // Now load the default methods that we use.
1129 Type [] string_string = { string_type, string_type };
1130 string_concat_string_string = GetMethod (
1131 string_type, "Concat", string_string);
1132 Type [] string_string_string = { string_type, string_type, string_type };
1133 string_concat_string_string_string = GetMethod (
1134 string_type, "Concat", string_string_string);
1135 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1136 string_concat_string_string_string_string = GetMethod (
1137 string_type, "Concat", string_string_string_string);
1138 Type[] params_string = { GetConstructedType (string_type, "[]") };
1139 string_concat_string_dot_dot_dot = GetMethod (
1140 string_type, "Concat", params_string);
1142 Type [] object_object = { object_type, object_type };
1143 string_concat_object_object = GetMethod (
1144 string_type, "Concat", object_object);
1145 Type [] object_object_object = { object_type, object_type, object_type };
1146 string_concat_object_object_object = GetMethod (
1147 string_type, "Concat", object_object_object);
1148 Type[] params_object = { GetConstructedType (object_type, "[]") };
1149 string_concat_object_dot_dot_dot = GetMethod (
1150 string_type, "Concat", params_object);
1152 Type [] string_ = { string_type };
1153 string_isinterneted_string = GetMethod (
1154 string_type, "IsInterned", string_);
1156 Type [] runtime_type_handle = { runtime_handle_type };
1157 system_type_get_type_from_handle = GetMethod (
1158 type_type, "GetTypeFromHandle", runtime_type_handle);
1160 Type [] delegate_delegate = { delegate_type, delegate_type };
1161 delegate_combine_delegate_delegate = GetMethod (
1162 delegate_type, "Combine", delegate_delegate);
1164 delegate_remove_delegate_delegate = GetMethod (
1165 delegate_type, "Remove", delegate_delegate);
1170 ienumerator_getcurrent = GetProperty (
1171 ienumerator_type, "Current");
1172 bool_movenext_void = GetMethod (
1173 ienumerator_type, "MoveNext", Type.EmptyTypes);
1174 void_reset_void = GetMethod (
1175 ienumerator_type, "Reset", Type.EmptyTypes);
1176 void_dispose_void = GetMethod (
1177 idisposable_type, "Dispose", Type.EmptyTypes);
1178 int_get_offset_to_string_data = GetMethod (
1179 runtime_helpers_type, "get_OffsetToStringData", Type.EmptyTypes);
1180 int_array_get_length = GetMethod (
1181 array_type, "get_Length", Type.EmptyTypes);
1182 int_array_get_rank = GetMethod (
1183 array_type, "get_Rank", Type.EmptyTypes);
1184 ienumerable_getenumerator_void = GetMethod (
1185 ienumerable_type, "GetEnumerator", Type.EmptyTypes);
1190 Type [] int_arg = { int32_type };
1191 int_array_get_length_int = GetMethod (
1192 array_type, "GetLength", int_arg);
1193 int_array_get_upper_bound_int = GetMethod (
1194 array_type, "GetUpperBound", int_arg);
1195 int_array_get_lower_bound_int = GetMethod (
1196 array_type, "GetLowerBound", int_arg);
1199 // System.Array methods
1201 object_array_clone = GetMethod (
1202 array_type, "Clone", Type.EmptyTypes);
1203 Type [] array_int_arg = { array_type, int32_type };
1204 void_array_copyto_array_int = GetMethod (
1205 array_type, "CopyTo", array_int_arg);
1210 Type [] object_arg = { object_type };
1211 void_monitor_enter_object = GetMethod (
1212 monitor_type, "Enter", object_arg);
1213 void_monitor_exit_object = GetMethod (
1214 monitor_type, "Exit", object_arg);
1216 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1218 void_initializearray_array_fieldhandle = GetMethod (
1219 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1224 int_getlength_int = GetMethod (
1225 array_type, "GetLength", int_arg);
1228 // Decimal constructors
1230 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1231 void_decimal_ctor_five_args = GetConstructor (
1232 decimal_type, dec_arg);
1234 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1239 unverifiable_code_ctor = GetConstructor (unverifiable_code_type, Type.EmptyTypes);
1240 default_member_ctor = GetConstructor (default_member_type, string_);
1242 Type[] short_arg = { short_type };
1243 struct_layout_attribute_ctor = GetConstructor (struct_layout_attribute_type, short_arg);
1245 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1246 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1248 field_offset_attribute_ctor = GetConstructor (field_offset_attribute_type, new Type []
1254 compiler_generated_attr = new CustomAttributeBuilder (
1255 GetConstructor (compiler_generated_attr_type, Type.EmptyTypes), new object[0]);
1257 Type[] type_int_arg = { type_type, int32_type };
1258 fixed_buffer_attr_ctor = GetConstructor (fixed_buffer_attr_type, type_int_arg);
1261 object_ctor = GetConstructor (object_type, Type.EmptyTypes);
1263 InitGenericCodeHelpers ();
1266 static public ConstructorInfo ConsParamArrayAttribute {
1268 if (cons_param_array_attribute == null)
1269 cons_param_array_attribute = GetConstructor (param_array_type, Type.EmptyTypes);
1270 return cons_param_array_attribute;
1274 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1277 /// This is the "old", non-cache based FindMembers() function. We cannot use
1278 /// the cache here because there is no member name argument.
1280 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1281 MemberFilter filter, object criteria)
1284 if (t.IsGenericType)
1285 t = t.GetGenericTypeDefinition ();
1288 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1291 // `builder_to_declspace' contains all dynamic types.
1295 Timer.StartTimer (TimerType.FindMembers);
1296 list = decl.FindMembers (mt, bf, filter, criteria);
1297 Timer.StopTimer (TimerType.FindMembers);
1302 // We have to take care of arrays specially, because GetType on
1303 // a TypeBuilder array will return a Type, not a TypeBuilder,
1304 // and we can not call FindMembers on this type.
1310 t.IsSubclassOf (TypeManager.array_type))
1311 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1313 if (t is GenericTypeParameterBuilder) {
1314 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1316 Timer.StartTimer (TimerType.FindMembers);
1317 MemberList list = tparam.FindMembers (
1318 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1319 Timer.StopTimer (TimerType.FindMembers);
1324 // Since FindMembers will not lookup both static and instance
1325 // members, we emulate this behaviour here.
1327 if ((bf & instance_and_static) == instance_and_static){
1328 MemberInfo [] i_members = t.FindMembers (
1329 mt, bf & ~BindingFlags.Static, filter, criteria);
1331 int i_len = i_members.Length;
1333 MemberInfo one = i_members [0];
1336 // If any of these are present, we are done!
1338 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1339 return new MemberList (i_members);
1342 MemberInfo [] s_members = t.FindMembers (
1343 mt, bf & ~BindingFlags.Instance, filter, criteria);
1345 int s_len = s_members.Length;
1346 if (i_len > 0 || s_len > 0)
1347 return new MemberList (i_members, s_members);
1350 return new MemberList (i_members);
1352 return new MemberList (s_members);
1356 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1361 /// This method is only called from within MemberLookup. It tries to use the member
1362 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1363 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1364 /// our return value will already contain all inherited members and the caller don't need
1365 /// to check base classes and interfaces anymore.
1367 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1368 string name, out bool used_cache)
1373 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1374 // and we can ask the DeclSpace for the MemberCache.
1376 if (t is TypeBuilder) {
1377 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1378 cache = decl.MemberCache;
1381 // If this DeclSpace has a MemberCache, use it.
1384 if (cache != null) {
1386 return cache.FindMembers (
1387 mt, bf, name, FilterWithClosure_delegate, null);
1390 // If there is no MemberCache, we need to use the "normal" FindMembers.
1391 // Note, this is a VERY uncommon route!
1394 Timer.StartTimer (TimerType.FindMembers);
1395 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1396 FilterWithClosure_delegate, name);
1397 Timer.StopTimer (TimerType.FindMembers);
1399 return (MemberInfo []) list;
1403 // We have to take care of arrays specially, because GetType on
1404 // a TypeBuilder array will return a Type, not a TypeBuilder,
1405 // and we can not call FindMembers on this type.
1407 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1409 return TypeHandle.ArrayType.MemberCache.FindMembers (
1410 mt, bf, name, FilterWithClosure_delegate, null);
1413 if (t is GenericTypeParameterBuilder) {
1414 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1417 Timer.StartTimer (TimerType.FindMembers);
1418 list = tparam.FindMembers (mt, bf & ~BindingFlags.DeclaredOnly,
1419 FilterWithClosure_delegate, name);
1420 Timer.StopTimer (TimerType.FindMembers);
1422 return (MemberInfo []) list;
1425 if (t.IsGenericType && (mt == MemberTypes.NestedType)) {
1427 // This happens if we're resolving a class'es base class and interfaces
1428 // in TypeContainer.DefineType(). At this time, the types aren't
1429 // populated yet, so we can't use the cache.
1431 MemberInfo[] info = t.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1432 FilterWithClosure_delegate, name);
1438 // This call will always succeed. There is exactly one TypeHandle instance per
1439 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1440 // the corresponding MemberCache.
1442 cache = TypeHandle.GetMemberCache (t);
1445 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1448 public static bool IsBuiltinType (Type t)
1450 t = TypeToCoreType (t);
1451 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1452 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1453 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1454 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1460 public static bool IsBuiltinType (TypeContainer tc)
1462 return IsBuiltinType (tc.TypeBuilder);
1466 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1467 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1469 public static bool IsPrimitiveType (Type t)
1471 return (t == int32_type || t == uint32_type ||
1472 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1473 t == char_type || t == short_type || t == bool_type ||
1474 t == sbyte_type || t == byte_type || t == ushort_type);
1477 public static bool IsDelegateType (Type t)
1479 t = DropGenericTypeArguments (t);
1480 if (t.IsSubclassOf (TypeManager.delegate_type))
1486 public static bool IsEnumType (Type t)
1488 if (builder_to_declspace [t] is Enum)
1492 if (t.IsGenericParameter)
1498 public static bool IsBuiltinOrEnum (Type t)
1500 if (IsBuiltinType (t))
1509 public static bool IsNullType (Type t)
1511 return t == null_type;
1514 public static bool IsAttributeType (Type t)
1516 return t == attribute_type && t.BaseType != null || IsSubclassOf (t, attribute_type);
1519 static Stack unmanaged_enclosing_types = new Stack (4);
1522 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1524 public static bool IsUnmanagedType (Type t)
1526 // Avoid infloops in the case of: unsafe struct Foo { Foo *x; }
1527 if (unmanaged_enclosing_types.Contains (t))
1530 // builtins that are not unmanaged types
1531 if (t == TypeManager.object_type || t == TypeManager.string_type)
1534 if (IsBuiltinOrEnum (t))
1537 // Someone did the work of checking if the ElementType of t is unmanaged. Let's not repeat it.
1541 // Arrays are disallowed, even if we mark them with [MarshalAs(UnmanagedType.ByValArray, ...)]
1545 if (!IsValueType (t))
1548 for (Type p = t.DeclaringType; p != null; p = p.DeclaringType) {
1549 if (p.IsGenericTypeDefinition)
1553 unmanaged_enclosing_types.Push (t);
1557 if (t is TypeBuilder) {
1558 TypeContainer tc = LookupTypeContainer (t);
1559 if (tc.Fields != null){
1560 foreach (FieldMember f in tc.Fields){
1561 // Avoid using f.FieldBuilder: f.Define () may not yet have been invoked.
1562 if ((f.ModFlags & Modifiers.STATIC) != 0)
1564 if (f.MemberType == null)
1566 if (!IsUnmanagedType (f.MemberType)){
1567 Report.SymbolRelatedToPreviousError (f.Location, CSharpName (t) + "." + f.Name);
1573 FieldInfo [] fields = t.GetFields (BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
1575 foreach (FieldInfo f in fields){
1576 if (!IsUnmanagedType (f.FieldType)){
1577 Report.SymbolRelatedToPreviousError (f);
1583 unmanaged_enclosing_types.Pop ();
1588 public static bool IsValueType (Type t)
1590 return t.IsGenericParameter || t.IsValueType;
1593 public static bool IsInterfaceType (Type t)
1595 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1599 return tc.Kind == Kind.Interface;
1602 public static bool IsSubclassOf (Type type, Type base_type)
1604 TypeParameter tparam = LookupTypeParameter (type);
1605 TypeParameter pparam = LookupTypeParameter (base_type);
1607 if ((tparam != null) && (pparam != null)) {
1608 if (tparam == pparam)
1611 return tparam.IsSubclassOf (base_type);
1615 if (type.IsGenericType)
1616 type = type.GetGenericTypeDefinition ();
1619 if (type.IsSubclassOf (base_type))
1623 if (IsEqual (type, base_type))
1626 type = type.BaseType;
1627 } while (type != null);
1632 public static bool IsPrivateAccessible (Type type, Type parent)
1634 if (type.Equals (parent))
1636 return DropGenericTypeArguments (type) == DropGenericTypeArguments (parent);
1639 public static bool IsFamilyAccessible (Type type, Type parent)
1641 TypeParameter tparam = LookupTypeParameter (type);
1642 TypeParameter pparam = LookupTypeParameter (parent);
1644 if ((tparam != null) && (pparam != null)) {
1645 if (tparam == pparam)
1648 return tparam.IsSubclassOf (parent);
1652 if (IsInstantiationOfSameGenericType (type, parent))
1655 type = type.BaseType;
1656 } while (type != null);
1662 // Checks whether `type' is a subclass or nested child of `base_type'.
1664 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1667 if (IsFamilyAccessible (type, base_type))
1670 // Handle nested types.
1671 type = type.DeclaringType;
1672 } while (type != null);
1678 // Checks whether `type' is a nested child of `parent'.
1680 public static bool IsNestedChildOf (Type type, Type parent)
1682 if (IsEqual (type, parent))
1685 type = type.DeclaringType;
1686 while (type != null) {
1687 if (IsEqual (type, parent))
1690 type = type.DeclaringType;
1697 // Checks whether `extern_type' is friend of the output assembly
1699 public static bool IsFriendAssembly (Assembly assembly)
1701 if (assembly_internals_vis_attrs.Contains (assembly))
1702 return (bool)(assembly_internals_vis_attrs [assembly]);
1704 object [] attrs = assembly.GetCustomAttributes (internals_visible_attr_type, false);
1705 if (attrs.Length == 0) {
1706 assembly_internals_vis_attrs.Add (assembly, false);
1710 AssemblyName this_name = CodeGen.Assembly.Name;
1711 byte [] this_token = this_name.GetPublicKeyToken ();
1712 bool is_friend = false;
1713 foreach (InternalsVisibleToAttribute attr in attrs) {
1714 if (attr.AssemblyName == null || attr.AssemblyName.Length == 0)
1717 AssemblyName aname = null;
1719 aname = new AssemblyName (attr.AssemblyName);
1720 } catch (FileLoadException) {
1721 } catch (ArgumentException) {
1724 if (aname == null || aname.Name != this_name.Name)
1727 byte [] key_token = aname.GetPublicKeyToken ();
1728 if (key_token != null) {
1729 if (this_token == null) {
1730 // Same name, but key token is null
1731 Error_FriendAccessNameNotMatching (aname.FullName);
1735 if (!CompareKeyTokens (this_token, key_token))
1743 assembly_internals_vis_attrs.Add (assembly, is_friend);
1747 static bool CompareKeyTokens (byte [] token1, byte [] token2)
1749 for (int i = 0; i < token1.Length; i++)
1750 if (token1 [i] != token2 [i])
1756 static void Error_FriendAccessNameNotMatching (string other_name)
1758 Report.Error (281, "Friend access was granted to `" + other_name +
1759 "', but the output assembly is named `" + CodeGen.Assembly.Name.FullName +
1760 "'. Try adding a reference to `" + other_name +
1761 "' or change the output assembly name to match it");
1765 // Do the right thing when returning the element type of an
1766 // array type based on whether we are compiling corlib or not
1768 public static Type GetElementType (Type t)
1770 if (RootContext.StdLib)
1771 return t.GetElementType ();
1773 return TypeToCoreType (t.GetElementType ());
1777 /// This method is not implemented by MS runtime for dynamic types
1779 public static bool HasElementType (Type t)
1781 return t.IsArray || t.IsPointer || t.IsByRef;
1785 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1789 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1790 /// for anything which is dynamic, and we need this in a number of places,
1791 /// we register this information here, and use it afterwards.
1793 static public void RegisterMethod (MethodBase mb, Parameters ip)
1795 method_params.Add (mb, ip);
1798 static public ParameterData GetParameterData (MethodBase mb)
1800 ParameterData pd = (ParameterData)method_params [mb];
1802 if (mb is MethodBuilder || mb is ConstructorBuilder)
1803 throw new InternalErrorException ("Argument for Method not registered" + mb);
1805 pd = new ReflectionParameters (mb);
1806 method_params.Add (mb, pd);
1811 static public void RegisterOverride (MethodBase override_method, MethodBase base_method)
1813 if (!method_overrides.Contains (override_method))
1814 method_overrides [override_method] = base_method;
1815 if (method_overrides [override_method] != base_method)
1816 throw new InternalErrorException ("Override mismatch: " + override_method);
1819 static public bool IsOverride (MethodBase m)
1821 m = DropGenericMethodArguments (m);
1823 return m.IsVirtual &&
1824 (m.Attributes & MethodAttributes.NewSlot) == 0 &&
1825 (m is MethodBuilder || method_overrides.Contains (m));
1828 static public MethodBase TryGetBaseDefinition (MethodBase m)
1830 m = DropGenericMethodArguments (m);
1832 return (MethodBase) method_overrides [m];
1836 /// Returns the argument types for an indexer based on its PropertyInfo
1838 /// For dynamic indexers, we use the compiler provided types, for
1839 /// indexers from existing assemblies we load them from GetParameters,
1840 /// and insert them into the cache
1842 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1844 if (indexer_arguments.Contains (indexer))
1845 return (Type []) indexer_arguments [indexer];
1846 else if (indexer is PropertyBuilder)
1847 // If we're a PropertyBuilder and not in the
1848 // `indexer_arguments' hash, then we're a property and
1850 return Type.EmptyTypes;
1852 ParameterInfo [] pi = indexer.GetIndexParameters ();
1853 // Property, not an indexer.
1855 return Type.EmptyTypes;
1857 Type [] types = new Type [c];
1859 for (int i = 0; i < c; i++)
1860 types [i] = pi [i].ParameterType;
1862 indexer_arguments.Add (indexer, types);
1867 public static void RegisterConstant (FieldInfo fb, IConstant ic)
1869 fields.Add (fb, ic);
1872 public static IConstant GetConstant (FieldInfo fb)
1877 return (IConstant)fields [fb];
1880 public static void RegisterProperty (PropertyInfo pi, PropertyBase pb)
1882 propertybuilder_to_property.Add (pi, pb);
1885 public static PropertyBase GetProperty (PropertyInfo pi)
1887 return (PropertyBase)propertybuilder_to_property [pi];
1890 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1892 if (fieldbuilders_to_fields.Contains (fb))
1895 fieldbuilders_to_fields.Add (fb, f);
1900 // The return value can be null; This will be the case for
1901 // auxiliary FieldBuilders created by the compiler that have no
1902 // real field being declared on the source code
1904 static public FieldBase GetField (FieldInfo fb)
1906 fb = GetGenericFieldDefinition (fb);
1907 return (FieldBase) fieldbuilders_to_fields [fb];
1910 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1913 events = new Hashtable ();
1915 if (!events.Contains (eb)) {
1916 events.Add (eb, new Pair (add, remove));
1920 static public MethodInfo GetAddMethod (EventInfo ei)
1922 if (ei is MyEventBuilder) {
1923 Pair pair = (Pair) events [ei];
1925 return (MethodInfo) pair.First;
1927 return ei.GetAddMethod (true);
1930 static public MethodInfo GetRemoveMethod (EventInfo ei)
1932 if (ei is MyEventBuilder) {
1933 Pair pair = (Pair) events [ei];
1935 return (MethodInfo) pair.Second;
1937 return ei.GetRemoveMethod (true);
1940 static Hashtable priv_fields_events;
1942 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1944 if (priv_fields_events == null)
1945 priv_fields_events = new Hashtable ();
1947 if (priv_fields_events.Contains (einfo))
1950 priv_fields_events.Add (einfo, builder);
1955 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1957 if (priv_fields_events == null)
1960 return (MemberInfo) priv_fields_events [ei];
1963 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1964 MethodBase set, Type[] args)
1966 indexer_arguments.Add (pb, args);
1971 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1973 Hashtable hash = new Hashtable ();
1974 return CheckStructCycles (tc, seen, hash);
1977 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1980 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1984 // `seen' contains all types we've already visited.
1986 if (seen.Contains (tc))
1988 seen.Add (tc, null);
1990 if (tc.Fields == null)
1993 foreach (FieldMember field in tc.Fields) {
1994 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1997 Type ftype = field.FieldBuilder.FieldType;
1998 TypeContainer ftc = LookupTypeContainer (ftype);
2002 if (hash.Contains (ftc)) {
2003 Report.Error (523, tc.Location,
2004 "Struct member `{0}.{1}' of type `{2}' " +
2005 "causes a cycle in the struct layout",
2006 tc.Name, field.Name, ftc.Name);
2011 // `hash' contains all types in the current path.
2013 hash.Add (tc, null);
2015 bool ok = CheckStructCycles (ftc, seen, hash);
2022 if (!seen.Contains (ftc))
2023 seen.Add (ftc, null);
2030 /// Given an array of interface types, expand and eliminate repeated ocurrences
2031 /// of an interface.
2035 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2038 public static Type[] ExpandInterfaces (IResolveContext ec, TypeExpr [] base_interfaces)
2040 ArrayList new_ifaces = new ArrayList ();
2042 foreach (TypeExpr iface in base_interfaces){
2043 TypeExpr texpr = iface.ResolveAsTypeTerminal (ec, false);
2047 Type itype = texpr.ResolveType (ec);
2049 if (new_ifaces.Contains (itype))
2052 new_ifaces.Add (itype);
2054 Type [] implementing = GetInterfaces (itype);
2056 foreach (Type imp in implementing){
2057 if (!new_ifaces.Contains (imp))
2058 new_ifaces.Add (imp);
2061 Type [] ret = new Type [new_ifaces.Count];
2062 new_ifaces.CopyTo (ret, 0);
2066 public static Type[] ExpandInterfaces (Type [] base_interfaces)
2068 ArrayList new_ifaces = new ArrayList ();
2070 foreach (Type itype in base_interfaces){
2071 if (new_ifaces.Contains (itype))
2074 new_ifaces.Add (itype);
2076 Type [] implementing = GetInterfaces (itype);
2078 foreach (Type imp in implementing){
2079 if (!new_ifaces.Contains (imp))
2080 new_ifaces.Add (imp);
2083 Type [] ret = new Type [new_ifaces.Count];
2084 new_ifaces.CopyTo (ret, 0);
2088 static PtrHashtable iface_cache = new PtrHashtable ();
2091 /// This function returns the interfaces in the type `t'. Works with
2092 /// both types and TypeBuilders.
2094 public static Type [] GetInterfaces (Type t)
2096 Type [] cached = iface_cache [t] as Type [];
2101 // The reason for catching the Array case is that Reflection.Emit
2102 // will not return a TypeBuilder for Array types of TypeBuilder types,
2103 // but will still throw an exception if we try to call GetInterfaces
2106 // Since the array interfaces are always constant, we return those for
2111 t = TypeManager.array_type;
2113 if ((t is TypeBuilder) || t.IsGenericType) {
2114 Type [] base_ifaces;
2116 if (t.BaseType == null)
2117 base_ifaces = Type.EmptyTypes;
2119 base_ifaces = GetInterfaces (t.BaseType);
2121 if (t.IsGenericType)
2123 type_ifaces = t.GetGenericTypeDefinition().GetInterfaces ();
2125 type_ifaces = t.GetInterfaces ();
2128 type_ifaces = (Type []) builder_to_ifaces [t];
2129 if (type_ifaces == null || type_ifaces.Length == 0)
2130 type_ifaces = Type.EmptyTypes;
2132 int base_count = base_ifaces.Length;
2133 Type [] result = new Type [base_count + type_ifaces.Length];
2134 base_ifaces.CopyTo (result, 0);
2135 type_ifaces.CopyTo (result, base_count);
2137 iface_cache [t] = result;
2139 } else if (t is GenericTypeParameterBuilder){
2140 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2141 if (type_ifaces == null)
2142 type_ifaces = Type.EmptyTypes;
2144 iface_cache [t] = type_ifaces;
2147 Type[] ifaces = t.GetInterfaces ();
2148 iface_cache [t] = ifaces;
2154 // gets the interfaces that are declared explicitly on t
2156 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2158 return (Type []) builder_to_ifaces [t];
2162 /// The following is used to check if a given type implements an interface.
2163 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2165 public static bool ImplementsInterface (Type t, Type iface)
2170 // FIXME OPTIMIZATION:
2171 // as soon as we hit a non-TypeBuiler in the interface
2172 // chain, we could return, as the `Type.GetInterfaces'
2173 // will return all the interfaces implement by the type
2177 interfaces = GetInterfaces (t);
2179 if (interfaces != null){
2180 foreach (Type i in interfaces){
2187 } while (t != null);
2192 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2194 // This is a custom version of Convert.ChangeType() which works
2195 // with the TypeBuilder defined types when compiling corlib.
2196 public static object ChangeType (object value, Type conversionType, out bool error)
2198 IConvertible convert_value = value as IConvertible;
2200 if (convert_value == null){
2206 // We must use Type.Equals() here since `conversionType' is
2207 // the TypeBuilder created version of a system type and not
2208 // the system type itself. You cannot use Type.GetTypeCode()
2209 // on such a type - it'd always return TypeCode.Object.
2213 if (conversionType.Equals (typeof (Boolean)))
2214 return (object)(convert_value.ToBoolean (nf_provider));
2215 else if (conversionType.Equals (typeof (Byte)))
2216 return (object)(convert_value.ToByte (nf_provider));
2217 else if (conversionType.Equals (typeof (Char)))
2218 return (object)(convert_value.ToChar (nf_provider));
2219 else if (conversionType.Equals (typeof (DateTime)))
2220 return (object)(convert_value.ToDateTime (nf_provider));
2221 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2222 return (object)(convert_value.ToDecimal (nf_provider));
2223 else if (conversionType.Equals (typeof (Double)))
2224 return (object)(convert_value.ToDouble (nf_provider));
2225 else if (conversionType.Equals (typeof (Int16)))
2226 return (object)(convert_value.ToInt16 (nf_provider));
2227 else if (conversionType.Equals (typeof (Int32)))
2228 return (object)(convert_value.ToInt32 (nf_provider));
2229 else if (conversionType.Equals (typeof (Int64)))
2230 return (object)(convert_value.ToInt64 (nf_provider));
2231 else if (conversionType.Equals (typeof (SByte)))
2232 return (object)(convert_value.ToSByte (nf_provider));
2233 else if (conversionType.Equals (typeof (Single)))
2234 return (object)(convert_value.ToSingle (nf_provider));
2235 else if (conversionType.Equals (typeof (String)))
2236 return (object)(convert_value.ToString (nf_provider));
2237 else if (conversionType.Equals (typeof (UInt16)))
2238 return (object)(convert_value.ToUInt16 (nf_provider));
2239 else if (conversionType.Equals (typeof (UInt32)))
2240 return (object)(convert_value.ToUInt32 (nf_provider));
2241 else if (conversionType.Equals (typeof (UInt64)))
2242 return (object)(convert_value.ToUInt64 (nf_provider));
2243 else if (conversionType.Equals (typeof (Object)))
2244 return (object)(value);
2254 // This is needed, because enumerations from assemblies
2255 // do not report their underlyingtype, but they report
2258 public static Type EnumToUnderlying (Type t)
2260 if (t == TypeManager.enum_type)
2263 t = t.UnderlyingSystemType;
2264 if (!TypeManager.IsEnumType (t))
2267 if (t is TypeBuilder) {
2268 // slow path needed to compile corlib
2269 if (t == TypeManager.bool_type ||
2270 t == TypeManager.byte_type ||
2271 t == TypeManager.sbyte_type ||
2272 t == TypeManager.char_type ||
2273 t == TypeManager.short_type ||
2274 t == TypeManager.ushort_type ||
2275 t == TypeManager.int32_type ||
2276 t == TypeManager.uint32_type ||
2277 t == TypeManager.int64_type ||
2278 t == TypeManager.uint64_type)
2281 TypeCode tc = Type.GetTypeCode (t);
2284 case TypeCode.Boolean:
2285 return TypeManager.bool_type;
2287 return TypeManager.byte_type;
2288 case TypeCode.SByte:
2289 return TypeManager.sbyte_type;
2291 return TypeManager.char_type;
2292 case TypeCode.Int16:
2293 return TypeManager.short_type;
2294 case TypeCode.UInt16:
2295 return TypeManager.ushort_type;
2296 case TypeCode.Int32:
2297 return TypeManager.int32_type;
2298 case TypeCode.UInt32:
2299 return TypeManager.uint32_type;
2300 case TypeCode.Int64:
2301 return TypeManager.int64_type;
2302 case TypeCode.UInt64:
2303 return TypeManager.uint64_type;
2305 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2309 // When compiling corlib and called with one of the core types, return
2310 // the corresponding typebuilder for that type.
2312 public static Type TypeToCoreType (Type t)
2314 if (RootContext.StdLib || (t is TypeBuilder))
2317 TypeCode tc = Type.GetTypeCode (t);
2320 case TypeCode.Boolean:
2321 return TypeManager.bool_type;
2323 return TypeManager.byte_type;
2324 case TypeCode.SByte:
2325 return TypeManager.sbyte_type;
2327 return TypeManager.char_type;
2328 case TypeCode.Int16:
2329 return TypeManager.short_type;
2330 case TypeCode.UInt16:
2331 return TypeManager.ushort_type;
2332 case TypeCode.Int32:
2333 return TypeManager.int32_type;
2334 case TypeCode.UInt32:
2335 return TypeManager.uint32_type;
2336 case TypeCode.Int64:
2337 return TypeManager.int64_type;
2338 case TypeCode.UInt64:
2339 return TypeManager.uint64_type;
2340 case TypeCode.Single:
2341 return TypeManager.float_type;
2342 case TypeCode.Double:
2343 return TypeManager.double_type;
2344 case TypeCode.String:
2345 return TypeManager.string_type;
2346 case TypeCode.Decimal:
2347 return TypeManager.decimal_type;
2349 if (t == typeof (void))
2350 return TypeManager.void_type;
2351 if (t == typeof (object))
2352 return TypeManager.object_type;
2353 if (t == typeof (System.Type))
2354 return TypeManager.type_type;
2355 if (t == typeof (System.IntPtr))
2356 return TypeManager.intptr_type;
2362 /// Utility function that can be used to probe whether a type
2363 /// is managed or not.
2365 public static bool VerifyUnManaged (Type t, Location loc)
2367 if (IsUnmanagedType (t))
2370 Report.Error (208, loc, "Cannot take the address of, get the size of, or declare a pointer to a managed type `{0}'",
2377 /// Returns the name of the indexer in a given type.
2380 /// The default is not always `Item'. The user can change this behaviour by
2381 /// using the IndexerNameAttribute in the container.
2383 /// For example, the String class indexer is named `Chars' not `Item'
2385 public static string IndexerPropertyName (Type t)
2387 t = DropGenericTypeArguments (t);
2388 if (t is TypeBuilder) {
2389 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2390 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2393 System.Attribute attr = System.Attribute.GetCustomAttribute (
2394 t, TypeManager.default_member_type);
2396 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2397 return dma.MemberName;
2400 return TypeContainer.DefaultIndexerName;
2403 static MethodInfo declare_local_method = null;
2405 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2407 if (declare_local_method == null){
2408 declare_local_method = typeof (ILGenerator).GetMethod (
2410 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2412 new Type [] { typeof (Type), typeof (bool)},
2414 if (declare_local_method == null){
2415 Report.RuntimeMissingSupport (Location.Null, "pinned local variables");
2416 return ig.DeclareLocal (t);
2419 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2422 private static bool IsSignatureEqual (Type a, Type b)
2425 /// Consider the following example (bug #77674):
2427 /// public abstract class A
2429 /// public abstract T Foo<T> ();
2432 /// public abstract class B : A
2434 /// public override U Foo<T> ()
2435 /// { return default (U); }
2438 /// Here, `T' and `U' are method type parameters from different methods
2439 /// (A.Foo and B.Foo), so both `==' and Equals() will fail.
2441 /// However, since we're determining whether B.Foo() overrides A.Foo(),
2442 /// we need to do a signature based comparision and consider them equal.
2447 if (a.IsGenericParameter && b.IsGenericParameter &&
2448 (a.DeclaringMethod != null) && (b.DeclaringMethod != null)) {
2449 return a.GenericParameterPosition == b.GenericParameterPosition;
2452 if (a.IsArray && b.IsArray) {
2453 if (a.GetArrayRank () != b.GetArrayRank ())
2456 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2459 if (a.IsByRef && b.IsByRef)
2460 return IsSignatureEqual (a.GetElementType (), b.GetElementType ());
2462 if (a.IsGenericType && b.IsGenericType) {
2463 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
2466 Type[] aargs = a.GetGenericArguments ();
2467 Type[] bargs = b.GetGenericArguments ();
2469 if (aargs.Length != bargs.Length)
2472 for (int i = 0; i < aargs.Length; i++) {
2473 if (!IsSignatureEqual (aargs [i], bargs [i]))
2484 // Returns whether the array of memberinfos contains the given method
2486 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2488 Type [] new_args = TypeManager.GetParameterData (new_method).Types;
2490 foreach (MethodBase method in array) {
2491 if (method.Name != new_method.Name)
2494 if (method is MethodInfo && new_method is MethodInfo)
2495 if (!IsSignatureEqual (((MethodInfo) method).ReturnType,
2496 ((MethodInfo) new_method).ReturnType))
2500 Type [] old_args = TypeManager.GetParameterData (method).Types;
2501 int old_count = old_args.Length;
2504 if (new_args.Length != old_count)
2507 for (i = 0; i < old_count; i++){
2508 if (!IsSignatureEqual (old_args [i], new_args [i]))
2521 // We copy methods from `new_members' into `target_list' if the signature
2522 // for the method from in the new list does not exist in the target_list
2524 // The name is assumed to be the same.
2526 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2528 if (target_list == null){
2529 target_list = new ArrayList ();
2531 foreach (MemberInfo mi in new_members){
2532 if (mi is MethodBase)
2533 target_list.Add (mi);
2538 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2539 target_list.CopyTo (target_array, 0);
2541 foreach (MemberInfo mi in new_members){
2542 MethodBase new_method = (MethodBase) mi;
2544 if (!ArrayContainsMethod (target_array, new_method))
2545 target_list.Add (new_method);
2550 // This method always return false for non-generic compiler,
2551 // while Type.IsGenericParameter is returned if it is supported.
2552 public static bool IsGenericParameter (Type type)
2554 return type.IsGenericParameter;
2557 public static int GenericParameterPosition (Type type)
2559 return type.GenericParameterPosition;
2562 #region MemberLookup implementation
2565 // Whether we allow private members in the result (since FindMembers
2566 // uses NonPublic for both protected and private), we need to distinguish.
2569 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2574 internal class Closure {
2575 internal bool private_ok;
2577 // Who is invoking us and which type is being queried currently.
2578 internal Type invocation_type;
2579 internal Type qualifier_type;
2581 // The assembly that defines the type is that is calling us
2582 internal Assembly invocation_assembly;
2583 internal IList almost_match;
2585 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2587 if (invocation_type == null)
2590 if (is_static && qualifier_type == null)
2591 // It resolved from a simple name, so it should be visible.
2594 // A nested class has access to all the protected members visible to its parent.
2595 if (qualifier_type != null && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2598 if (IsNestedFamilyAccessible (invocation_type, m.DeclaringType)) {
2599 // Although a derived class can access protected members of its base class
2600 // it cannot do so through an instance of the base class (CS1540).
2601 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2603 qualifier_type == null ||
2604 IsInstantiationOfSameGenericType (invocation_type, qualifier_type) ||
2605 !IsFamilyAccessible (invocation_type, qualifier_type) ||
2606 IsNestedChildOf (invocation_type, qualifier_type))
2610 if (almost_match != null)
2611 almost_match.Add (m);
2617 // This filter filters by name + whether it is ok to include private
2618 // members in the search
2620 internal bool Filter (MemberInfo m, object filter_criteria)
2623 // Hack: we know that the filter criteria will always be in the
2624 // `closure' // fields.
2627 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2630 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2631 (invocation_type != null) &&
2632 IsPrivateAccessible (m.DeclaringType, invocation_type))
2636 // Ugly: we need to find out the type of `m', and depending
2637 // on this, tell whether we accept or not
2639 if (m is MethodBase){
2640 MethodBase mb = (MethodBase) m;
2641 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2643 if (ma == MethodAttributes.Public)
2646 if (ma == MethodAttributes.Private)
2647 return private_ok ||
2648 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2649 IsNestedChildOf (invocation_type, m.DeclaringType);
2651 if (invocation_assembly == mb.DeclaringType.Assembly ||
2652 TypeManager.IsFriendAssembly (mb.DeclaringType.Assembly)) {
2653 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
2656 if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
2660 // Family, FamORAssem or FamANDAssem
2661 return CheckValidFamilyAccess (mb.IsStatic, m);
2664 if (m is FieldInfo){
2665 FieldInfo fi = (FieldInfo) m;
2666 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2668 if (fa == FieldAttributes.Public)
2671 if (fa == FieldAttributes.Private)
2672 return private_ok ||
2673 IsPrivateAccessible (invocation_type, m.DeclaringType) ||
2674 IsNestedChildOf (invocation_type, m.DeclaringType);
2676 if (invocation_assembly == fi.DeclaringType.Assembly ||
2677 TypeManager.IsFriendAssembly (fi.DeclaringType.Assembly)) {
2678 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamORAssem)
2681 if (fa == FieldAttributes.Assembly || fa == FieldAttributes.FamANDAssem)
2685 // Family, FamORAssem or FamANDAssem
2686 return CheckValidFamilyAccess (fi.IsStatic, m);
2690 // EventInfos and PropertyInfos, return true because they lack
2691 // permission information, so we need to check later on the methods.
2697 static Closure closure = new Closure ();
2698 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2701 // Looks up a member called `name' in the `queried_type'. This lookup
2702 // is done by code that is contained in the definition for `invocation_type'
2703 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2705 // `invocation_type' is used to check whether we're allowed to access the requested
2706 // member wrt its protection level.
2708 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2709 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2710 // is B and qualifier_type is A). This is used to do the CS1540 check.
2712 // When resolving a SimpleName, `qualifier_type' is null.
2714 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2715 // the same than `queried_type' - except when we're being called from BaseAccess;
2716 // in this case, `invocation_type' is the current type and `queried_type' the base
2717 // type, so this'd normally trigger a CS1540.
2719 // The binding flags are `bf' and the kind of members being looked up are `mt'
2721 // The return value always includes private members which code in `invocation_type'
2722 // is allowed to access (using the specified `qualifier_type' if given); only use
2723 // BindingFlags.NonPublic to bypass the permission check.
2725 // The 'almost_match' argument is used for reporting error CS1540.
2727 // Returns an array of a single element for everything but Methods/Constructors
2728 // that might return multiple matches.
2730 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2731 Type queried_type, MemberTypes mt,
2732 BindingFlags original_bf, string name, IList almost_match)
2734 Timer.StartTimer (TimerType.MemberLookup);
2736 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2737 queried_type, mt, original_bf, name, almost_match);
2739 Timer.StopTimer (TimerType.MemberLookup);
2744 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2745 Type queried_type, MemberTypes mt,
2746 BindingFlags original_bf, string name, IList almost_match)
2748 BindingFlags bf = original_bf;
2750 ArrayList method_list = null;
2751 Type current_type = queried_type;
2752 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2753 bool skip_iface_check = true, used_cache = false;
2754 bool always_ok_flag = invocation_type != null && IsNestedChildOf (invocation_type, queried_type);
2756 closure.invocation_type = invocation_type;
2757 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2758 closure.qualifier_type = qualifier_type;
2759 closure.almost_match = almost_match;
2761 // This is from the first time we find a method
2762 // in most cases, we do not actually find a method in the base class
2763 // so we can just ignore it, and save the arraylist allocation
2764 MemberInfo [] first_members_list = null;
2765 bool use_first_members_list = false;
2771 // `NonPublic' is lame, because it includes both protected and
2772 // private methods, so we need to control this behavior by
2773 // explicitly tracking if a private method is ok or not.
2775 // The possible cases are:
2776 // public, private and protected (internal does not come into the
2779 if ((invocation_type != null) &&
2780 ((invocation_type == current_type) ||
2781 IsNestedChildOf (invocation_type, current_type)) ||
2783 bf = original_bf | BindingFlags.NonPublic;
2787 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2789 Timer.StopTimer (TimerType.MemberLookup);
2791 list = MemberLookup_FindMembers (
2792 current_type, mt, bf, name, out used_cache);
2794 Timer.StartTimer (TimerType.MemberLookup);
2797 // When queried for an interface type, the cache will automatically check all
2798 // inherited members, so we don't need to do this here. However, this only
2799 // works if we already used the cache in the first iteration of this loop.
2801 // If we used the cache in any further iteration, we can still terminate the
2802 // loop since the cache always looks in all base classes.
2808 skip_iface_check = false;
2810 if (current_type == TypeManager.object_type)
2813 current_type = current_type.BaseType;
2816 // This happens with interfaces, they have a null
2817 // basetype. Look members up in the Object class.
2819 if (current_type == null) {
2820 current_type = TypeManager.object_type;
2825 if (list.Length == 0)
2829 // Events and types are returned by both `static' and `instance'
2830 // searches, which means that our above FindMembers will
2831 // return two copies of the same.
2833 if (list.Length == 1 && !(list [0] is MethodBase)){
2838 // Multiple properties: we query those just to find out the indexer
2841 if (list [0] is PropertyInfo)
2845 // We found an event: the cache lookup returns both the event and
2846 // its private field.
2848 if (list [0] is EventInfo) {
2849 if ((list.Length == 2) && (list [1] is FieldInfo))
2850 return new MemberInfo [] { list [0] };
2857 // We found methods, turn the search into "method scan"
2861 if (first_members_list != null) {
2862 if (use_first_members_list) {
2863 method_list = CopyNewMethods (method_list, first_members_list);
2864 use_first_members_list = false;
2867 method_list = CopyNewMethods (method_list, list);
2869 first_members_list = list;
2870 use_first_members_list = true;
2872 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2874 } while (searching);
2876 if (use_first_members_list) {
2877 foreach (MemberInfo mi in first_members_list) {
2878 if (! (mi is MethodBase)) {
2879 method_list = CopyNewMethods (method_list, first_members_list);
2880 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2883 return (MemberInfo []) first_members_list;
2886 if (method_list != null && method_list.Count > 0) {
2887 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2890 // This happens if we already used the cache in the first iteration, in this case
2891 // the cache already looked in all interfaces.
2893 if (skip_iface_check)
2897 // Interfaces do not list members they inherit, so we have to
2900 if (!queried_type.IsInterface)
2903 if (queried_type.IsArray)
2904 queried_type = TypeManager.array_type;
2906 Type [] ifaces = GetInterfaces (queried_type);
2910 foreach (Type itype in ifaces){
2913 x = MemberLookup (null, null, itype, mt, bf, name, null);
2921 // Tests whether external method is really special
2922 public static bool IsSpecialMethod (MethodBase mb)
2924 string name = mb.Name;
2925 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2926 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2928 if (name.StartsWith ("add_"))
2929 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2931 if (name.StartsWith ("remove_"))
2932 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2934 if (name.StartsWith ("op_")){
2935 foreach (string oname in Unary.oper_names) {
2940 foreach (string oname in Binary.oper_names) {
2953 /// There is exactly one instance of this class per type.
2955 public sealed class TypeHandle : IMemberContainer {
2956 public readonly IMemberContainer BaseType;
2958 readonly int id = ++next_id;
2959 static int next_id = 0;
2961 static TypeHandle ()
2967 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2968 /// a TypeHandle yet, a new instance of it is created. This static method
2969 /// ensures that we'll only have one TypeHandle instance per type.
2971 private static TypeHandle GetTypeHandle (Type t)
2973 TypeHandle handle = (TypeHandle) type_hash [t];
2977 handle = new TypeHandle (t);
2978 type_hash.Add (t, handle);
2982 public static MemberCache GetMemberCache (Type t)
2984 return GetTypeHandle (t).MemberCache;
2987 public static void CleanUp ()
2992 public static void Reset ()
2994 type_hash = new PtrHashtable ();
2998 /// Returns the TypeHandle for TypeManager.object_type.
3000 public static IMemberContainer ObjectType {
3002 if (object_type != null)
3005 object_type = GetTypeHandle (TypeManager.object_type);
3012 /// Returns the TypeHandle for TypeManager.array_type.
3014 public static IMemberContainer ArrayType {
3016 if (array_type != null)
3019 array_type = GetTypeHandle (TypeManager.array_type);
3025 private static PtrHashtable type_hash;
3027 private static TypeHandle object_type = null;
3028 private static TypeHandle array_type = null;
3031 private string full_name;
3032 private bool is_interface;
3033 private MemberCache member_cache;
3034 private MemberCache base_cache;
3036 private TypeHandle (Type type)
3039 full_name = type.FullName != null ? type.FullName : type.Name;
3040 if (type.BaseType != null) {
3041 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3042 BaseType = base_cache.Container;
3043 } else if (type.IsInterface)
3044 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3045 this.is_interface = type.IsInterface || type.IsGenericParameter;
3046 this.member_cache = new MemberCache (this);
3049 // IMemberContainer methods
3051 public string Name {
3063 public MemberCache BaseCache {
3069 public bool IsInterface {
3071 return is_interface;
3075 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3077 MemberInfo [] members;
3078 if (type is GenericTypeParameterBuilder)
3079 return MemberList.Empty;
3080 if (mt == MemberTypes.Event)
3081 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3083 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3085 Array.Reverse (members);
3087 return new MemberList (members);
3090 // IMemberFinder methods
3092 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3093 MemberFilter filter, object criteria)
3095 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3098 public MemberCache MemberCache {
3100 return member_cache;
3104 public override string ToString ()
3106 if (BaseType != null)
3107 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3109 return "TypeHandle (" + id + "," + Name + ")";