2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
7 // Licensed under the terms of the GNU GPL
9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
14 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
15 // the behavior of the compilation. This can be removed if we rework
16 // the code to get a list of namespaces available.
18 #define SIMPLE_SPEEDUP
22 using System.Globalization;
23 using System.Collections;
24 using System.Reflection;
25 using System.Reflection.Emit;
27 using System.Text.RegularExpressions;
28 using System.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
33 public class TypeManager {
35 // A list of core types that the compiler requires or uses
37 static public Type object_type;
38 static public Type value_type;
39 static public Type string_type;
40 static public Type int32_type;
41 static public Type uint32_type;
42 static public Type int64_type;
43 static public Type uint64_type;
44 static public Type float_type;
45 static public Type double_type;
46 static public Type char_type;
47 static public Type char_ptr_type;
48 static public Type short_type;
49 static public Type decimal_type;
50 static public Type bool_type;
51 static public Type sbyte_type;
52 static public Type byte_type;
53 static public Type ushort_type;
54 static public Type enum_type;
55 static public Type delegate_type;
56 static public Type multicast_delegate_type;
57 static public Type void_type;
58 static public Type null_type;
59 static public Type enumeration_type;
60 static public Type array_type;
61 static public Type runtime_handle_type;
62 static public Type icloneable_type;
63 static public Type type_type;
64 static public Type ienumerator_type;
65 static public Type ienumerable_type;
66 static public Type idisposable_type;
67 static public Type iconvertible_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 monitor_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 unverifiable_code_type;
80 static public Type methodimpl_attr_type;
81 static public Type marshal_as_attr_type;
82 static public Type param_array_type;
83 static public Type guid_attr_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 anonymous_method_type;
93 static public Type cls_compliant_attribute_type;
94 static public Type typed_reference_type;
95 static public Type arg_iterator_type;
96 static public Type mbr_type;
97 static public Type struct_layout_attribute_type;
98 static public Type field_offset_attribute_type;
99 static public Type security_attr_type;
102 // An empty array of types
104 static public Type [] NoTypes;
105 static public TypeExpr [] NoTypeExprs;
109 // Expressions representing the internal types. Used during declaration
112 static public TypeExpr system_object_expr, system_string_expr;
113 static public TypeExpr system_boolean_expr, system_decimal_expr;
114 static public TypeExpr system_single_expr, system_double_expr;
115 static public TypeExpr system_sbyte_expr, system_byte_expr;
116 static public TypeExpr system_int16_expr, system_uint16_expr;
117 static public TypeExpr system_int32_expr, system_uint32_expr;
118 static public TypeExpr system_int64_expr, system_uint64_expr;
119 static public TypeExpr system_char_expr, system_void_expr;
120 static public TypeExpr system_asynccallback_expr;
121 static public TypeExpr system_iasyncresult_expr;
122 static public TypeExpr system_valuetype_expr;
123 static public TypeExpr system_intptr_expr;
126 // This is only used when compiling corlib
128 static public Type system_int32_type;
129 static public Type system_array_type;
130 static public Type system_type_type;
131 static public Type system_assemblybuilder_type;
132 static public MethodInfo system_int_array_get_length;
133 static public MethodInfo system_int_array_get_rank;
134 static public MethodInfo system_object_array_clone;
135 static public MethodInfo system_int_array_get_length_int;
136 static public MethodInfo system_int_array_get_lower_bound_int;
137 static public MethodInfo system_int_array_get_upper_bound_int;
138 static public MethodInfo system_void_array_copyto_array_int;
142 // Internal, not really used outside
144 static Type runtime_helpers_type;
147 // These methods are called by code generated by the compiler
149 static public MethodInfo string_concat_string_string;
150 static public MethodInfo string_concat_string_string_string;
151 static public MethodInfo string_concat_string_string_string_string;
152 static public MethodInfo string_concat_string_dot_dot_dot;
153 static public MethodInfo string_concat_object_object;
154 static public MethodInfo string_concat_object_object_object;
155 static public MethodInfo string_concat_object_dot_dot_dot;
156 static public MethodInfo string_isinterneted_string;
157 static public MethodInfo system_type_get_type_from_handle;
158 static public MethodInfo object_getcurrent_void;
159 static public MethodInfo bool_movenext_void;
160 static public MethodInfo ienumerable_getenumerator_void;
161 static public MethodInfo void_reset_void;
162 static public MethodInfo void_dispose_void;
163 static public MethodInfo void_monitor_enter_object;
164 static public MethodInfo void_monitor_exit_object;
165 static public MethodInfo void_initializearray_array_fieldhandle;
166 static public MethodInfo int_getlength_int;
167 static public MethodInfo delegate_combine_delegate_delegate;
168 static public MethodInfo delegate_remove_delegate_delegate;
169 static public MethodInfo int_get_offset_to_string_data;
170 static public MethodInfo int_array_get_length;
171 static public MethodInfo int_array_get_rank;
172 static public MethodInfo object_array_clone;
173 static public MethodInfo int_array_get_length_int;
174 static public MethodInfo int_array_get_lower_bound_int;
175 static public MethodInfo int_array_get_upper_bound_int;
176 static public MethodInfo void_array_copyto_array_int;
179 // The attribute constructors.
181 static public ConstructorInfo object_ctor;
182 static public ConstructorInfo cons_param_array_attribute;
183 static public ConstructorInfo void_decimal_ctor_five_args;
184 static public ConstructorInfo void_decimal_ctor_int_arg;
185 static public ConstructorInfo unverifiable_code_ctor;
186 static public ConstructorInfo invalid_operation_ctor;
187 static public ConstructorInfo default_member_ctor;
188 static public ConstructorInfo decimal_constant_attribute_ctor;
191 // Holds the Array of Assemblies that have been loaded
192 // (either because it is the default or the user used the
193 // -r command line option)
195 static Assembly [] assemblies;
198 // Keeps a list of modules. We used this to do lookups
199 // on the module using GetType -- needed for arrays
201 static Module [] modules;
204 // This is the type_cache from the assemblies to avoid
205 // hitting System.Reflection on every lookup.
207 static Hashtable types;
210 // This is used to hotld the corresponding TypeContainer objects
211 // since we need this in FindMembers
213 static Hashtable typecontainers;
216 // Keeps track of those types that are defined by the
219 static ArrayList user_types;
221 static PtrHashtable builder_to_declspace;
223 static PtrHashtable builder_to_member_cache;
226 // Tracks the interfaces implemented by typebuilders. We only
227 // enter those who do implement or or more interfaces
229 static PtrHashtable builder_to_ifaces;
232 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
233 // the arguments to the method
235 static Hashtable method_arguments;
238 // Maps PropertyBuilder to a Type array that contains
239 // the arguments to the indexer
241 static Hashtable indexer_arguments;
244 // Maybe `method_arguments' should be replaced and only
245 // method_internal_params should be kept?
247 static Hashtable method_internal_params;
250 // Keeps track of methods
253 static Hashtable builder_to_method;
256 // Contains all public types from referenced assemblies.
257 // This member is used only if CLS Compliance verification is required.
259 public static Hashtable all_imported_types;
266 public static void CleanUp ()
268 // Lets get everything clean so that we can collect before generating code
272 typecontainers = null;
274 builder_to_declspace = null;
275 builder_to_member_cache = null;
276 builder_to_ifaces = null;
277 method_arguments = null;
278 indexer_arguments = null;
279 method_internal_params = null;
280 builder_to_method = null;
284 negative_hits = null;
285 builder_to_constant = null;
286 fieldbuilders_to_fields = null;
288 priv_fields_events = null;
291 TypeHandle.CleanUp ();
295 /// A filter for Findmembers that uses the Signature object to
298 static bool SignatureFilter (MemberInfo mi, object criteria)
300 Signature sig = (Signature) criteria;
302 if (!(mi is MethodBase))
305 if (mi.Name != sig.name)
308 int count = sig.args.Length;
310 if (mi is MethodBuilder || mi is ConstructorBuilder){
311 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
313 if (candidate_args.Length != count)
316 for (int i = 0; i < count; i++)
317 if (candidate_args [i] != sig.args [i])
322 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
324 if (pars.Length != count)
327 for (int i = 0; i < count; i++)
328 if (pars [i].ParameterType != sig.args [i])
334 // A delegate that points to the filter above.
335 static MemberFilter signature_filter;
338 // These are expressions that represent some of the internal data types, used
341 static void InitExpressionTypes ()
343 system_object_expr = new TypeLookupExpression ("System.Object");
344 system_string_expr = new TypeLookupExpression ("System.String");
345 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
346 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
347 system_single_expr = new TypeLookupExpression ("System.Single");
348 system_double_expr = new TypeLookupExpression ("System.Double");
349 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
350 system_byte_expr = new TypeLookupExpression ("System.Byte");
351 system_int16_expr = new TypeLookupExpression ("System.Int16");
352 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
353 system_int32_expr = new TypeLookupExpression ("System.Int32");
354 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
355 system_int64_expr = new TypeLookupExpression ("System.Int64");
356 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
357 system_char_expr = new TypeLookupExpression ("System.Char");
358 system_void_expr = new TypeLookupExpression ("System.Void");
359 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
360 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
361 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
362 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
365 static TypeManager ()
367 assemblies = new Assembly [0];
369 user_types = new ArrayList ();
371 types = new Hashtable ();
372 typecontainers = new Hashtable ();
374 builder_to_declspace = new PtrHashtable ();
375 builder_to_member_cache = new PtrHashtable ();
376 builder_to_method = new PtrHashtable ();
377 method_arguments = new PtrHashtable ();
378 method_internal_params = new PtrHashtable ();
379 indexer_arguments = new PtrHashtable ();
380 builder_to_ifaces = new PtrHashtable ();
382 NoTypes = new Type [0];
383 NoTypeExprs = new TypeExpr [0];
385 signature_filter = new MemberFilter (SignatureFilter);
386 InitExpressionTypes ();
389 public static void HandleDuplicate (string name, Type t)
391 Type prev = (Type) types [name];
392 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
396 // This probably never happens, as we catch this before
398 Report.Error (-17, "The type `" + name + "' has already been defined.");
402 tc = builder_to_declspace [t] as TypeContainer;
405 1595, "The type `" + name + "' is defined in an existing assembly;"+
406 " Using the new definition from: " + tc.Location);
409 1595, "The type `" + name + "' is defined in an existing assembly;");
412 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
418 public static void AddUserType (string name, TypeBuilder t)
423 HandleDuplicate (name, t);
429 // This entry point is used by types that we define under the covers
431 public static void RegisterBuilder (Type tb, Type [] ifaces)
434 builder_to_ifaces [tb] = ifaces;
437 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc)
439 builder_to_declspace.Add (t, tc);
440 typecontainers.Add (name, tc);
441 AddUserType (name, t);
444 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
449 HandleDuplicate (name, t);
452 builder_to_declspace.Add (t, del);
455 public static void AddEnumType (string name, TypeBuilder t, Enum en)
460 HandleDuplicate (name, t);
462 builder_to_declspace.Add (t, en);
465 public static void AddMethod (MethodBase builder, IMethodData method)
467 builder_to_method.Add (builder, method);
470 public static IMethodData GetMethod (MethodBase builder)
472 return (IMethodData) builder_to_method [builder];
476 /// Returns the DeclSpace whose Type is `t' or null if there is no
477 /// DeclSpace for `t' (ie, the Type comes from a library)
479 public static DeclSpace LookupDeclSpace (Type t)
481 return builder_to_declspace [t] as DeclSpace;
485 /// Returns the TypeContainer whose Type is `t' or null if there is no
486 /// TypeContainer for `t' (ie, the Type comes from a library)
488 public static TypeContainer LookupTypeContainer (Type t)
490 return builder_to_declspace [t] as TypeContainer;
493 public static MemberCache LookupMemberCache (Type t)
495 if (t is TypeBuilder) {
496 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
497 if (container != null)
498 return container.MemberCache;
501 return TypeHandle.GetMemberCache (t);
504 public static MemberCache LookupParentInterfacesCache (Type t)
506 Type [] ifaces = t.GetInterfaces ();
508 if (ifaces != null && ifaces.Length == 1)
509 return LookupMemberCache (ifaces [0]);
511 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
512 MemberCache cache = builder_to_member_cache [t] as MemberCache;
516 cache = new MemberCache (ifaces);
517 builder_to_member_cache.Add (t, cache);
521 public static TypeContainer LookupInterface (Type t)
523 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
524 if ((tc == null) || (tc.Kind != Kind.Interface))
530 public static Delegate LookupDelegate (Type t)
532 return builder_to_declspace [t] as Delegate;
535 public static Enum LookupEnum (Type t)
537 return builder_to_declspace [t] as Enum;
540 public static Class LookupClass (Type t)
542 return (Class) builder_to_declspace [t];
546 /// Registers an assembly to load types from.
548 public static void AddAssembly (Assembly a)
550 foreach (Assembly assembly in assemblies) {
555 int top = assemblies.Length;
556 Assembly [] n = new Assembly [top + 1];
558 assemblies.CopyTo (n, 0);
564 public static Assembly [] GetAssemblies ()
570 /// Registers a module builder to lookup types from
572 public static void AddModule (Module mb)
574 int top = modules != null ? modules.Length : 0;
575 Module [] n = new Module [top + 1];
578 modules.CopyTo (n, 0);
583 public static Module[] Modules {
589 static Hashtable references = new Hashtable ();
592 // Gets the reference to T version of the Type (T&)
594 public static Type GetReferenceType (Type t)
596 string tname = t.FullName + "&";
598 Type ret = t.Assembly.GetType (tname);
601 // If the type comes from the assembly we are building
602 // We need the Hashtable, because .NET 1.1 will return different instance types
603 // every time we call ModuleBuilder.GetType.
606 if (references [t] == null)
607 references [t] = CodeGen.Module.Builder.GetType (tname);
608 ret = (Type) references [t];
614 static Hashtable pointers = new Hashtable ();
617 // Gets the pointer to T version of the Type (T*)
619 public static Type GetPointerType (Type t)
621 string tname = t.FullName + "*";
623 Type ret = t.Assembly.GetType (tname);
626 // If the type comes from the assembly we are building
627 // We need the Hashtable, because .NET 1.1 will return different instance types
628 // every time we call ModuleBuilder.GetType.
631 if (pointers [t] == null)
632 pointers [t] = CodeGen.Module.Builder.GetType (tname);
634 ret = (Type) pointers [t];
641 // Low-level lookup, cache-less
643 static Type LookupTypeReflection (string name)
647 foreach (Assembly a in assemblies){
648 t = a.GetType (name);
653 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
654 if (ta == TypeAttributes.NotPublic ||
655 ta == TypeAttributes.NestedPrivate ||
656 ta == TypeAttributes.NestedAssembly ||
657 ta == TypeAttributes.NestedFamANDAssem){
660 // In .NET pointers turn out to be private, even if their
661 // element type is not
664 t = t.GetElementType ();
674 foreach (Module mb in modules) {
675 t = mb.GetType (name);
683 static Hashtable negative_hits = new Hashtable ();
686 // This function is used when you want to avoid the lookups, and want to go
687 // directly to the source. This will use the cache.
689 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
690 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
691 // way to test things other than doing a fullname compare
693 public static Type LookupTypeDirect (string name)
695 Type t = (Type) types [name];
699 if (negative_hits.Contains (name))
702 t = LookupTypeReflection (name);
705 negative_hits [name] = null;
712 static readonly char [] dot_array = { '.' };
715 /// Returns the Type associated with @name, takes care of the fact that
716 /// reflection expects nested types to be separated from the main type
717 /// with a "+" instead of a "."
719 public static Type LookupType (string name)
724 // First lookup in user defined and cached values
727 t = (Type) types [name];
731 // Two thirds of the failures are caught here.
732 if (negative_hits.Contains (name))
735 // Sadly, split takes a param array, so this ends up allocating *EVERY TIME*
736 string [] elements = name.Split (dot_array);
737 int count = elements.Length;
739 for (int n = 1; n <= count; n++){
740 string top_level_type = String.Join (".", elements, 0, n);
742 // One third of the failures are caught here.
743 if (negative_hits.Contains (top_level_type))
746 t = (Type) types [top_level_type];
748 t = LookupTypeReflection (top_level_type);
750 negative_hits [top_level_type] = null;
761 // We know that System.Object does not have children, and since its the parent of
762 // all the objects, it always gets probbed for inner classes.
764 if (top_level_type == "System.Object")
767 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
768 //Console.WriteLine ("Looking up: " + newt + " " + name);
769 t = LookupTypeReflection (newt);
771 negative_hits [name] = null;
776 negative_hits [name] = null;
781 /// Computes the namespaces that we import from the assemblies we reference.
783 public static void ComputeNamespaces ()
785 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
788 // First add the assembly namespaces
790 if (assembly_get_namespaces != null){
791 int count = assemblies.Length;
793 for (int i = 0; i < count; i++){
794 Assembly a = assemblies [i];
795 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
796 foreach (string ns in namespaces){
799 Namespace.LookupNamespace (ns, true);
803 Hashtable cache = new Hashtable ();
804 cache.Add ("", null);
805 foreach (Assembly a in assemblies) {
806 foreach (Type t in a.GetExportedTypes ()) {
807 string ns = t.Namespace;
808 if (ns == null || cache.Contains (ns))
811 Namespace.LookupNamespace (ns, true);
812 cache.Add (ns, null);
819 /// Fills static table with exported types from all referenced assemblies.
820 /// This information is required for CLS Compliance tests.
822 public static void LoadAllImportedTypes ()
824 all_imported_types = new Hashtable ();
825 foreach (Assembly a in assemblies) {
826 foreach (Type t in a.GetExportedTypes ()) {
827 all_imported_types [t.FullName] = t;
832 public static bool NamespaceClash (string name, Location loc)
834 if (Namespace.LookupNamespace (name, false) == null)
837 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
842 /// Returns the C# name of a type if possible, or the full type name otherwise
844 static public string CSharpName (Type t)
846 return Regex.Replace (t.FullName,
848 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
849 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
850 @"Boolean|String|Void|Null)" +
852 new MatchEvaluator (CSharpNameMatch));
855 static String CSharpNameMatch (Match match)
857 string s = match.Groups [1].Captures [0].Value;
859 Replace ("int32", "int").
860 Replace ("uint32", "uint").
861 Replace ("int16", "short").
862 Replace ("uint16", "ushort").
863 Replace ("int64", "long").
864 Replace ("uint64", "ulong").
865 Replace ("single", "float").
866 Replace ("boolean", "bool")
867 + match.Groups [2].Captures [0].Value;
871 /// Returns the signature of the method with full namespace classification
873 static public string GetFullNameSignature (MemberInfo mi)
875 return mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
878 static public string GetFullNameSignature (MethodBase mb)
880 string name = mb.Name;
882 name = mb.DeclaringType.Name;
884 if (mb.IsSpecialName) {
885 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
886 name = name.Remove (0, 4);
893 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
897 /// Returns the signature of the property and indexer
899 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
902 return GetFullNameSignature (pb);
905 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
906 string signature = GetFullNameSignature (mb);
907 string arg = TypeManager.LookupParametersByBuilder (mb).ParameterDesc (0);
908 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
912 /// Returns the signature of the method
914 static public string CSharpSignature (MethodBase mb)
916 StringBuilder sig = new StringBuilder ("(");
919 // FIXME: We should really have a single function to do
920 // everything instead of the following 5 line pattern
922 ParameterData iparams = LookupParametersByBuilder (mb);
925 iparams = new ReflectionParameters (mb);
928 if (mb.IsSpecialName && iparams.Count == 0 && !mb.IsConstructor)
929 return GetFullNameSignature (mb);
931 for (int i = 0; i < iparams.Count; i++) {
935 sig.Append (iparams.ParameterDesc (i));
940 if (mb.IsSpecialName && iparams.Count == 1 && !mb.IsConstructor) {
941 sig.Replace ('(', '[');
942 sig.Replace (')', ']');
945 return GetFullNameSignature (mb) + sig.ToString ();
949 /// Looks up a type, and aborts if it is not found. This is used
950 /// by types required by the compiler
952 static Type CoreLookupType (string name)
954 Type t = LookupTypeDirect (name);
957 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
958 Environment.Exit (1);
965 /// Returns the MethodInfo for a method named `name' defined
966 /// in type `t' which takes arguments of types `args'
968 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
972 BindingFlags flags = instance_and_static | BindingFlags.Public;
978 flags |= BindingFlags.NonPublic;
980 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
981 if (list.Count == 0) {
983 Report.Error (-19, "Can not find the core function `" + name + "'");
987 MethodInfo mi = list [0] as MethodInfo;
990 Report.Error (-19, "Can not find the core function `" + name + "'");
997 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
999 return GetMethod (t, name, args, false, report_errors);
1002 static MethodInfo GetMethod (Type t, string name, Type [] args)
1004 return GetMethod (t, name, args, true);
1009 /// Returns the ConstructorInfo for "args"
1011 static ConstructorInfo GetConstructor (Type t, Type [] args)
1019 list = FindMembers (t, MemberTypes.Constructor,
1020 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1021 signature_filter, sig);
1022 if (list.Count == 0){
1023 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1027 ConstructorInfo ci = list [0] as ConstructorInfo;
1029 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1036 public static void InitEnumUnderlyingTypes ()
1039 int32_type = CoreLookupType ("System.Int32");
1040 int64_type = CoreLookupType ("System.Int64");
1041 uint32_type = CoreLookupType ("System.UInt32");
1042 uint64_type = CoreLookupType ("System.UInt64");
1043 byte_type = CoreLookupType ("System.Byte");
1044 sbyte_type = CoreLookupType ("System.SByte");
1045 short_type = CoreLookupType ("System.Int16");
1046 ushort_type = CoreLookupType ("System.UInt16");
1050 /// The types have to be initialized after the initial
1051 /// population of the type has happened (for example, to
1052 /// bootstrap the corlib.dll
1054 public static void InitCoreTypes ()
1056 object_type = CoreLookupType ("System.Object");
1057 value_type = CoreLookupType ("System.ValueType");
1059 InitEnumUnderlyingTypes ();
1061 char_type = CoreLookupType ("System.Char");
1062 string_type = CoreLookupType ("System.String");
1063 float_type = CoreLookupType ("System.Single");
1064 double_type = CoreLookupType ("System.Double");
1065 char_ptr_type = CoreLookupType ("System.Char*");
1066 decimal_type = CoreLookupType ("System.Decimal");
1067 bool_type = CoreLookupType ("System.Boolean");
1068 enum_type = CoreLookupType ("System.Enum");
1070 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1071 delegate_type = CoreLookupType ("System.Delegate");
1073 array_type = CoreLookupType ("System.Array");
1074 void_type = CoreLookupType ("System.Void");
1075 type_type = CoreLookupType ("System.Type");
1077 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1078 runtime_argument_handle_type = CoreLookupType ("System.RuntimeArgumentHandle");
1079 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1080 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1081 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1082 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1083 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1084 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1085 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1086 idisposable_type = CoreLookupType ("System.IDisposable");
1087 icloneable_type = CoreLookupType ("System.ICloneable");
1088 iconvertible_type = CoreLookupType ("System.IConvertible");
1089 monitor_type = CoreLookupType ("System.Threading.Monitor");
1090 intptr_type = CoreLookupType ("System.IntPtr");
1092 attribute_type = CoreLookupType ("System.Attribute");
1093 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1094 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1095 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1096 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1097 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1098 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1099 typed_reference_type = CoreLookupType ("System.TypedReference");
1100 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1101 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1102 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices.DecimalConstantAttribute");
1105 // Sigh. Remove this before the release. Wonder what versions of Mono
1106 // people are running.
1108 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1110 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1112 void_ptr_type = CoreLookupType ("System.Void*");
1114 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1116 exception_type = CoreLookupType ("System.Exception");
1117 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1118 not_supported_exception_type = CoreLookupType ("System.NotSupportedException");
1123 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1124 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1125 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1126 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1127 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1128 security_attr_type = CoreLookupType ("System.Security.Permissions.SecurityAttribute");
1131 // When compiling corlib, store the "real" types here.
1133 if (!RootContext.StdLib) {
1134 system_int32_type = typeof (System.Int32);
1135 system_array_type = typeof (System.Array);
1136 system_type_type = typeof (System.Type);
1137 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1139 Type [] void_arg = { };
1140 system_int_array_get_length = GetMethod (
1141 system_array_type, "get_Length", void_arg);
1142 system_int_array_get_rank = GetMethod (
1143 system_array_type, "get_Rank", void_arg);
1144 system_object_array_clone = GetMethod (
1145 system_array_type, "Clone", void_arg);
1147 Type [] system_int_arg = { system_int32_type };
1148 system_int_array_get_length_int = GetMethod (
1149 system_array_type, "GetLength", system_int_arg);
1150 system_int_array_get_upper_bound_int = GetMethod (
1151 system_array_type, "GetUpperBound", system_int_arg);
1152 system_int_array_get_lower_bound_int = GetMethod (
1153 system_array_type, "GetLowerBound", system_int_arg);
1155 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1156 system_void_array_copyto_array_int = GetMethod (
1157 system_array_type, "CopyTo", system_array_int_arg);
1159 Type [] system_3_type_arg = {
1160 system_type_type, system_type_type, system_type_type };
1161 Type [] system_4_type_arg = {
1162 system_type_type, system_type_type, system_type_type, system_type_type };
1164 MethodInfo set_corlib_type_builders = GetMethod (
1165 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1166 system_4_type_arg, true, false);
1168 if (set_corlib_type_builders != null) {
1169 object[] args = new object [4];
1170 args [0] = object_type;
1171 args [1] = value_type;
1172 args [2] = enum_type;
1173 args [3] = void_type;
1175 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1177 // Compatibility for an older version of the class libs.
1178 set_corlib_type_builders = GetMethod (
1179 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1180 system_3_type_arg, true, true);
1182 if (set_corlib_type_builders == null) {
1183 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1187 object[] args = new object [3];
1188 args [0] = object_type;
1189 args [1] = value_type;
1190 args [2] = enum_type;
1192 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1196 system_object_expr.Type = object_type;
1197 system_string_expr.Type = string_type;
1198 system_boolean_expr.Type = bool_type;
1199 system_decimal_expr.Type = decimal_type;
1200 system_single_expr.Type = float_type;
1201 system_double_expr.Type = double_type;
1202 system_sbyte_expr.Type = sbyte_type;
1203 system_byte_expr.Type = byte_type;
1204 system_int16_expr.Type = short_type;
1205 system_uint16_expr.Type = ushort_type;
1206 system_int32_expr.Type = int32_type;
1207 system_uint32_expr.Type = uint32_type;
1208 system_int64_expr.Type = int64_type;
1209 system_uint64_expr.Type = uint64_type;
1210 system_char_expr.Type = char_type;
1211 system_void_expr.Type = void_type;
1212 system_asynccallback_expr.Type = asynccallback_type;
1213 system_iasyncresult_expr.Type = iasyncresult_type;
1214 system_valuetype_expr.Type = value_type;
1217 // These are only used for compare purposes
1219 anonymous_method_type = typeof (AnonymousMethod);
1220 null_type = typeof (NullType);
1224 // The helper methods that are used by the compiler
1226 public static void InitCodeHelpers ()
1229 // Now load the default methods that we use.
1231 Type [] string_string = { string_type, string_type };
1232 string_concat_string_string = GetMethod (
1233 string_type, "Concat", string_string);
1234 Type [] string_string_string = { string_type, string_type, string_type };
1235 string_concat_string_string_string = GetMethod (
1236 string_type, "Concat", string_string_string);
1237 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1238 string_concat_string_string_string_string = GetMethod (
1239 string_type, "Concat", string_string_string_string);
1240 Type[] params_string = { TypeManager.LookupType ("System.String[]") };
1241 string_concat_string_dot_dot_dot = GetMethod (
1242 string_type, "Concat", params_string);
1244 Type [] object_object = { object_type, object_type };
1245 string_concat_object_object = GetMethod (
1246 string_type, "Concat", object_object);
1247 Type [] object_object_object = { object_type, object_type, object_type };
1248 string_concat_object_object_object = GetMethod (
1249 string_type, "Concat", object_object_object);
1250 Type[] params_object = { TypeManager.LookupType ("System.Object[]") };
1251 string_concat_object_dot_dot_dot = GetMethod (
1252 string_type, "Concat", params_object);
1254 Type [] string_ = { string_type };
1255 string_isinterneted_string = GetMethod (
1256 string_type, "IsInterned", string_);
1258 Type [] runtime_type_handle = { runtime_handle_type };
1259 system_type_get_type_from_handle = GetMethod (
1260 type_type, "GetTypeFromHandle", runtime_type_handle);
1262 Type [] delegate_delegate = { delegate_type, delegate_type };
1263 delegate_combine_delegate_delegate = GetMethod (
1264 delegate_type, "Combine", delegate_delegate);
1266 delegate_remove_delegate_delegate = GetMethod (
1267 delegate_type, "Remove", delegate_delegate);
1272 Type [] void_arg = { };
1273 object_getcurrent_void = GetMethod (
1274 ienumerator_type, "get_Current", void_arg);
1275 bool_movenext_void = GetMethod (
1276 ienumerator_type, "MoveNext", void_arg);
1277 void_reset_void = GetMethod (
1278 ienumerator_type, "Reset", void_arg);
1279 void_dispose_void = GetMethod (
1280 idisposable_type, "Dispose", void_arg);
1281 int_get_offset_to_string_data = GetMethod (
1282 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1283 int_array_get_length = GetMethod (
1284 array_type, "get_Length", void_arg);
1285 int_array_get_rank = GetMethod (
1286 array_type, "get_Rank", void_arg);
1287 ienumerable_getenumerator_void = GetMethod (
1288 ienumerable_type, "GetEnumerator", void_arg);
1293 Type [] int_arg = { int32_type };
1294 int_array_get_length_int = GetMethod (
1295 array_type, "GetLength", int_arg);
1296 int_array_get_upper_bound_int = GetMethod (
1297 array_type, "GetUpperBound", int_arg);
1298 int_array_get_lower_bound_int = GetMethod (
1299 array_type, "GetLowerBound", int_arg);
1302 // System.Array methods
1304 object_array_clone = GetMethod (
1305 array_type, "Clone", void_arg);
1306 Type [] array_int_arg = { array_type, int32_type };
1307 void_array_copyto_array_int = GetMethod (
1308 array_type, "CopyTo", array_int_arg);
1313 Type [] object_arg = { object_type };
1314 void_monitor_enter_object = GetMethod (
1315 monitor_type, "Enter", object_arg);
1316 void_monitor_exit_object = GetMethod (
1317 monitor_type, "Exit", object_arg);
1319 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1321 void_initializearray_array_fieldhandle = GetMethod (
1322 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1327 int_getlength_int = GetMethod (
1328 array_type, "GetLength", int_arg);
1331 // Decimal constructors
1333 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1334 void_decimal_ctor_five_args = GetConstructor (
1335 decimal_type, dec_arg);
1337 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1342 cons_param_array_attribute = GetConstructor (
1343 param_array_type, void_arg);
1345 unverifiable_code_ctor = GetConstructor (
1346 unverifiable_code_type, void_arg);
1348 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1349 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1351 default_member_ctor = GetConstructor (default_member_type, string_);
1354 // InvalidOperationException
1356 invalid_operation_ctor = GetConstructor (
1357 invalid_operation_exception_type, void_arg);
1361 object_ctor = GetConstructor (object_type, void_arg);
1365 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1368 /// This is the "old", non-cache based FindMembers() function. We cannot use
1369 /// the cache here because there is no member name argument.
1371 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1372 MemberFilter filter, object criteria)
1374 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1377 // `builder_to_declspace' contains all dynamic types.
1381 Timer.StartTimer (TimerType.FindMembers);
1382 list = decl.FindMembers (mt, bf, filter, criteria);
1383 Timer.StopTimer (TimerType.FindMembers);
1388 // We have to take care of arrays specially, because GetType on
1389 // a TypeBuilder array will return a Type, not a TypeBuilder,
1390 // and we can not call FindMembers on this type.
1392 if (t.IsSubclassOf (TypeManager.array_type))
1393 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1396 // Since FindMembers will not lookup both static and instance
1397 // members, we emulate this behaviour here.
1399 if ((bf & instance_and_static) == instance_and_static){
1400 MemberInfo [] i_members = t.FindMembers (
1401 mt, bf & ~BindingFlags.Static, filter, criteria);
1403 int i_len = i_members.Length;
1405 MemberInfo one = i_members [0];
1408 // If any of these are present, we are done!
1410 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1411 return new MemberList (i_members);
1414 MemberInfo [] s_members = t.FindMembers (
1415 mt, bf & ~BindingFlags.Instance, filter, criteria);
1417 int s_len = s_members.Length;
1418 if (i_len > 0 || s_len > 0)
1419 return new MemberList (i_members, s_members);
1422 return new MemberList (i_members);
1424 return new MemberList (s_members);
1428 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1433 /// This method is only called from within MemberLookup. It tries to use the member
1434 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1435 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1436 /// our return value will already contain all inherited members and the caller don't need
1437 /// to check base classes and interfaces anymore.
1439 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1440 string name, out bool used_cache)
1445 // We have to take care of arrays specially, because GetType on
1446 // a TypeBuilder array will return a Type, not a TypeBuilder,
1447 // and we can not call FindMembers on this type.
1449 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1451 return TypeHandle.ArrayType.MemberCache.FindMembers (
1452 mt, bf, name, FilterWithClosure_delegate, null);
1456 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1457 // and we can ask the DeclSpace for the MemberCache.
1459 if (t is TypeBuilder) {
1460 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1461 cache = decl.MemberCache;
1464 // If this DeclSpace has a MemberCache, use it.
1467 if (cache != null) {
1469 return cache.FindMembers (
1470 mt, bf, name, FilterWithClosure_delegate, null);
1473 // If there is no MemberCache, we need to use the "normal" FindMembers.
1474 // Note, this is a VERY uncommon route!
1477 Timer.StartTimer (TimerType.FindMembers);
1478 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1479 FilterWithClosure_delegate, name);
1480 Timer.StopTimer (TimerType.FindMembers);
1483 return (MemberInfo []) list;
1487 // This call will always succeed. There is exactly one TypeHandle instance per
1488 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1489 // the corresponding MemberCache.
1491 cache = TypeHandle.GetMemberCache (t);
1494 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1497 public static bool IsBuiltinType (Type t)
1499 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1500 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1501 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1502 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1508 public static bool IsBuiltinType (TypeContainer tc)
1510 return IsBuiltinType (tc.TypeBuilder);
1514 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1515 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1517 public static bool IsCLRType (Type t)
1519 if (t == object_type || t == int32_type || t == uint32_type ||
1520 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1521 t == char_type || t == short_type || t == bool_type ||
1522 t == sbyte_type || t == byte_type || t == ushort_type)
1528 public static bool IsDelegateType (Type t)
1530 if (t.IsSubclassOf (TypeManager.delegate_type))
1536 public static bool IsEnumType (Type t)
1538 if (t.IsSubclassOf (TypeManager.enum_type))
1543 public static bool IsBuiltinOrEnum (Type t)
1545 if (IsBuiltinType (t))
1555 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1557 public static bool IsUnmanagedType (Type t)
1559 if (IsBuiltinType (t) && t != TypeManager.string_type)
1568 if (IsValueType (t)){
1569 if (t is TypeBuilder){
1570 TypeContainer tc = LookupTypeContainer (t);
1572 if (tc.Fields != null){
1573 foreach (Field f in tc.Fields){
1574 if (f.FieldBuilder.IsStatic)
1576 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1582 FieldInfo [] fields = t.GetFields ();
1584 foreach (FieldInfo f in fields){
1587 if (!IsUnmanagedType (f.FieldType))
1597 public static bool IsValueType (Type t)
1599 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1605 public static bool IsInterfaceType (Type t)
1607 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1611 return tc.Kind == Kind.Interface;
1614 public static bool IsSubclassOf (Type type, Type parent)
1617 if (type.Equals (parent))
1620 type = type.BaseType;
1621 } while (type != null);
1626 public static bool IsFamilyAccessible (Type type, Type parent)
1628 return IsSubclassOf (type, parent);
1632 // Checks whether `type' is a subclass or nested child of `parent'.
1634 public static bool IsNestedFamilyAccessible (Type type, Type parent)
1637 if ((type == parent) || type.IsSubclassOf (parent))
1640 // Handle nested types.
1641 type = type.DeclaringType;
1642 } while (type != null);
1648 // Checks whether `type' is a nested child of `parent'.
1650 public static bool IsNestedChildOf (Type type, Type parent)
1655 type = type.DeclaringType;
1656 while (type != null) {
1660 type = type.DeclaringType;
1667 // Do the right thing when returning the element type of an
1668 // array type based on whether we are compiling corlib or not
1670 public static Type GetElementType (Type t)
1672 if (RootContext.StdLib)
1673 return t.GetElementType ();
1675 return TypeToCoreType (t.GetElementType ());
1679 /// Returns the User Defined Types
1681 public static ArrayList UserTypes {
1687 public static Hashtable TypeContainers {
1689 return typecontainers;
1693 static Hashtable builder_to_constant;
1695 public static void RegisterConstant (FieldBuilder fb, Const c)
1697 if (builder_to_constant == null)
1698 builder_to_constant = new PtrHashtable ();
1700 if (builder_to_constant.Contains (fb))
1703 builder_to_constant.Add (fb, c);
1706 public static Const LookupConstant (FieldBuilder fb)
1708 if (builder_to_constant == null)
1711 return (Const) builder_to_constant [fb];
1715 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1719 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1720 /// for anything which is dynamic, and we need this in a number of places,
1721 /// we register this information here, and use it afterwards.
1723 static public void RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1728 method_arguments.Add (mb, args);
1729 method_internal_params.Add (mb, ip);
1732 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1734 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1737 if (method_internal_params.Contains (mb))
1738 return (InternalParameters) method_internal_params [mb];
1740 throw new Exception ("Argument for Method not registered" + mb);
1744 /// Returns the argument types for a method based on its methodbase
1746 /// For dynamic methods, we use the compiler provided types, for
1747 /// methods from existing assemblies we load them from GetParameters,
1748 /// and insert them into the cache
1750 static public Type [] GetArgumentTypes (MethodBase mb)
1752 object t = method_arguments [mb];
1756 ParameterInfo [] pi = mb.GetParameters ();
1763 types = new Type [c];
1764 for (int i = 0; i < c; i++)
1765 types [i] = pi [i].ParameterType;
1767 method_arguments.Add (mb, types);
1772 /// Returns the argument types for an indexer based on its PropertyInfo
1774 /// For dynamic indexers, we use the compiler provided types, for
1775 /// indexers from existing assemblies we load them from GetParameters,
1776 /// and insert them into the cache
1778 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1780 if (indexer_arguments.Contains (indexer))
1781 return (Type []) indexer_arguments [indexer];
1782 else if (indexer is PropertyBuilder)
1783 // If we're a PropertyBuilder and not in the
1784 // `indexer_arguments' hash, then we're a property and
1788 ParameterInfo [] pi = indexer.GetIndexParameters ();
1789 // Property, not an indexer.
1793 Type [] types = new Type [c];
1795 for (int i = 0; i < c; i++)
1796 types [i] = pi [i].ParameterType;
1798 indexer_arguments.Add (indexer, types);
1804 // This is a workaround the fact that GetValue is not
1805 // supported for dynamic types
1807 static Hashtable fields = new Hashtable ();
1808 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1810 if (fields.Contains (fb))
1813 fields.Add (fb, value);
1818 static public object GetValue (FieldBuilder fb)
1823 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1824 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1826 if (fieldbuilders_to_fields.Contains (fb))
1829 fieldbuilders_to_fields.Add (fb, f);
1834 // The return value can be null; This will be the case for
1835 // auxiliary FieldBuilders created by the compiler that have no
1836 // real field being declared on the source code
1838 static public FieldBase GetField (FieldInfo fb)
1840 return (FieldBase) fieldbuilders_to_fields [fb];
1843 static Hashtable events;
1845 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1848 events = new Hashtable ();
1850 if (!events.Contains (eb)) {
1851 events.Add (eb, new Pair (add, remove));
1855 static public MethodInfo GetAddMethod (EventInfo ei)
1857 if (ei is MyEventBuilder) {
1858 Pair pair = (Pair) events [ei];
1860 return (MethodInfo) pair.First;
1862 return ei.GetAddMethod (true);
1865 static public MethodInfo GetRemoveMethod (EventInfo ei)
1867 if (ei is MyEventBuilder) {
1868 Pair pair = (Pair) events [ei];
1870 return (MethodInfo) pair.Second;
1872 return ei.GetRemoveMethod (true);
1875 static Hashtable priv_fields_events;
1877 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1879 if (priv_fields_events == null)
1880 priv_fields_events = new Hashtable ();
1882 if (priv_fields_events.Contains (einfo))
1885 priv_fields_events.Add (einfo, builder);
1890 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1892 if (priv_fields_events == null)
1895 return (MemberInfo) priv_fields_events [ei];
1898 static Hashtable properties;
1900 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1902 if (properties == null)
1903 properties = new Hashtable ();
1905 if (properties.Contains (pb))
1908 properties.Add (pb, new Pair (get, set));
1913 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1914 MethodBase set, Type[] args)
1916 if (!RegisterProperty (pb, get,set))
1919 indexer_arguments.Add (pb, args);
1924 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1926 Hashtable hash = new Hashtable ();
1927 return CheckStructCycles (tc, seen, hash);
1930 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1933 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1937 // `seen' contains all types we've already visited.
1939 if (seen.Contains (tc))
1941 seen.Add (tc, null);
1943 if (tc.Fields == null)
1946 foreach (Field field in tc.Fields) {
1947 if (field.FieldBuilder.IsStatic)
1950 Type ftype = field.FieldBuilder.FieldType;
1951 TypeContainer ftc = LookupTypeContainer (ftype);
1955 if (hash.Contains (ftc)) {
1956 Report.Error (523, tc.Location,
1957 "Struct member `{0}.{1}' of type `{2}' " +
1958 "causes a cycle in the struct layout",
1959 tc.Name, field.Name, ftc.Name);
1964 // `hash' contains all types in the current path.
1966 hash.Add (tc, null);
1968 bool ok = CheckStructCycles (ftc, seen, hash);
1975 if (!seen.Contains (ftc))
1976 seen.Add (ftc, null);
1983 /// Given an array of interface types, expand and eliminate repeated ocurrences
1984 /// of an interface.
1988 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1991 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
1993 ArrayList new_ifaces = new ArrayList ();
1995 foreach (TypeExpr iface in base_interfaces){
1996 Type itype = iface.ResolveType (ec);
2000 if (!new_ifaces.Contains (itype))
2001 new_ifaces.Add (itype);
2003 Type [] implementing = itype.GetInterfaces ();
2005 foreach (Type imp in implementing){
2006 if (!new_ifaces.Contains (imp))
2007 new_ifaces.Add (imp);
2010 Type [] ret = new Type [new_ifaces.Count];
2011 new_ifaces.CopyTo (ret, 0);
2015 static PtrHashtable iface_cache = new PtrHashtable ();
2018 /// This function returns the interfaces in the type `t'. Works with
2019 /// both types and TypeBuilders.
2021 public static Type [] GetInterfaces (Type t)
2024 Type [] cached = iface_cache [t] as Type [];
2029 // The reason for catching the Array case is that Reflection.Emit
2030 // will not return a TypeBuilder for Array types of TypeBuilder types,
2031 // but will still throw an exception if we try to call GetInterfaces
2034 // Since the array interfaces are always constant, we return those for
2039 t = TypeManager.array_type;
2041 if (t is TypeBuilder){
2042 Type [] parent_ifaces;
2044 if (t.BaseType == null)
2045 parent_ifaces = NoTypes;
2047 parent_ifaces = GetInterfaces (t.BaseType);
2048 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
2049 if (type_ifaces == null)
2050 type_ifaces = NoTypes;
2052 int parent_count = parent_ifaces.Length;
2053 Type [] result = new Type [parent_count + type_ifaces.Length];
2054 parent_ifaces.CopyTo (result, 0);
2055 type_ifaces.CopyTo (result, parent_count);
2057 iface_cache [t] = result;
2060 Type[] ifaces = t.GetInterfaces ();
2061 iface_cache [t] = ifaces;
2067 // gets the interfaces that are declared explicitly on t
2069 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2071 return (Type []) builder_to_ifaces [t];
2075 /// The following is used to check if a given type implements an interface.
2076 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2078 public static bool ImplementsInterface (Type t, Type iface)
2083 // FIXME OPTIMIZATION:
2084 // as soon as we hit a non-TypeBuiler in the interface
2085 // chain, we could return, as the `Type.GetInterfaces'
2086 // will return all the interfaces implement by the type
2090 interfaces = GetInterfaces (t);
2092 if (interfaces != null){
2093 foreach (Type i in interfaces){
2100 } while (t != null);
2105 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2107 // This is a custom version of Convert.ChangeType() which works
2108 // with the TypeBuilder defined types when compiling corlib.
2109 public static object ChangeType (object value, Type conversionType, out bool error)
2111 IConvertible convert_value = value as IConvertible;
2113 if (convert_value == null){
2119 // We must use Type.Equals() here since `conversionType' is
2120 // the TypeBuilder created version of a system type and not
2121 // the system type itself. You cannot use Type.GetTypeCode()
2122 // on such a type - it'd always return TypeCode.Object.
2126 if (conversionType.Equals (typeof (Boolean)))
2127 return (object)(convert_value.ToBoolean (nf_provider));
2128 else if (conversionType.Equals (typeof (Byte)))
2129 return (object)(convert_value.ToByte (nf_provider));
2130 else if (conversionType.Equals (typeof (Char)))
2131 return (object)(convert_value.ToChar (nf_provider));
2132 else if (conversionType.Equals (typeof (DateTime)))
2133 return (object)(convert_value.ToDateTime (nf_provider));
2134 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2135 return (object)(convert_value.ToDecimal (nf_provider));
2136 else if (conversionType.Equals (typeof (Double)))
2137 return (object)(convert_value.ToDouble (nf_provider));
2138 else if (conversionType.Equals (typeof (Int16)))
2139 return (object)(convert_value.ToInt16 (nf_provider));
2140 else if (conversionType.Equals (typeof (Int32)))
2141 return (object)(convert_value.ToInt32 (nf_provider));
2142 else if (conversionType.Equals (typeof (Int64)))
2143 return (object)(convert_value.ToInt64 (nf_provider));
2144 else if (conversionType.Equals (typeof (SByte)))
2145 return (object)(convert_value.ToSByte (nf_provider));
2146 else if (conversionType.Equals (typeof (Single)))
2147 return (object)(convert_value.ToSingle (nf_provider));
2148 else if (conversionType.Equals (typeof (String)))
2149 return (object)(convert_value.ToString (nf_provider));
2150 else if (conversionType.Equals (typeof (UInt16)))
2151 return (object)(convert_value.ToUInt16 (nf_provider));
2152 else if (conversionType.Equals (typeof (UInt32)))
2153 return (object)(convert_value.ToUInt32 (nf_provider));
2154 else if (conversionType.Equals (typeof (UInt64)))
2155 return (object)(convert_value.ToUInt64 (nf_provider));
2156 else if (conversionType.Equals (typeof (Object)))
2157 return (object)(value);
2167 // This is needed, because enumerations from assemblies
2168 // do not report their underlyingtype, but they report
2171 public static Type EnumToUnderlying (Type t)
2173 if (t == TypeManager.enum_type)
2176 t = t.UnderlyingSystemType;
2177 if (!TypeManager.IsEnumType (t))
2180 if (t is TypeBuilder) {
2181 // slow path needed to compile corlib
2182 if (t == TypeManager.bool_type ||
2183 t == TypeManager.byte_type ||
2184 t == TypeManager.sbyte_type ||
2185 t == TypeManager.char_type ||
2186 t == TypeManager.short_type ||
2187 t == TypeManager.ushort_type ||
2188 t == TypeManager.int32_type ||
2189 t == TypeManager.uint32_type ||
2190 t == TypeManager.int64_type ||
2191 t == TypeManager.uint64_type)
2193 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2195 TypeCode tc = Type.GetTypeCode (t);
2198 case TypeCode.Boolean:
2199 return TypeManager.bool_type;
2201 return TypeManager.byte_type;
2202 case TypeCode.SByte:
2203 return TypeManager.sbyte_type;
2205 return TypeManager.char_type;
2206 case TypeCode.Int16:
2207 return TypeManager.short_type;
2208 case TypeCode.UInt16:
2209 return TypeManager.ushort_type;
2210 case TypeCode.Int32:
2211 return TypeManager.int32_type;
2212 case TypeCode.UInt32:
2213 return TypeManager.uint32_type;
2214 case TypeCode.Int64:
2215 return TypeManager.int64_type;
2216 case TypeCode.UInt64:
2217 return TypeManager.uint64_type;
2219 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2223 // When compiling corlib and called with one of the core types, return
2224 // the corresponding typebuilder for that type.
2226 public static Type TypeToCoreType (Type t)
2228 if (RootContext.StdLib || (t is TypeBuilder))
2231 TypeCode tc = Type.GetTypeCode (t);
2234 case TypeCode.Boolean:
2235 return TypeManager.bool_type;
2237 return TypeManager.byte_type;
2238 case TypeCode.SByte:
2239 return TypeManager.sbyte_type;
2241 return TypeManager.char_type;
2242 case TypeCode.Int16:
2243 return TypeManager.short_type;
2244 case TypeCode.UInt16:
2245 return TypeManager.ushort_type;
2246 case TypeCode.Int32:
2247 return TypeManager.int32_type;
2248 case TypeCode.UInt32:
2249 return TypeManager.uint32_type;
2250 case TypeCode.Int64:
2251 return TypeManager.int64_type;
2252 case TypeCode.UInt64:
2253 return TypeManager.uint64_type;
2254 case TypeCode.Single:
2255 return TypeManager.float_type;
2256 case TypeCode.Double:
2257 return TypeManager.double_type;
2258 case TypeCode.String:
2259 return TypeManager.string_type;
2260 case TypeCode.Decimal:
2261 return TypeManager.decimal_type;
2263 if (t == typeof (void))
2264 return TypeManager.void_type;
2265 if (t == typeof (object))
2266 return TypeManager.object_type;
2267 if (t == typeof (System.Type))
2268 return TypeManager.type_type;
2269 if (t == typeof (System.IntPtr))
2270 return TypeManager.intptr_type;
2276 /// Utility function that can be used to probe whether a type
2277 /// is managed or not.
2279 public static bool VerifyUnManaged (Type t, Location loc)
2281 if (t.IsValueType || t.IsPointer){
2283 // FIXME: this is more complex, we actually need to
2284 // make sure that the type does not contain any
2290 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2291 // We need this explicit check here to make it work when
2292 // compiling corlib.
2297 "Cannot take the address or size of a variable of a managed type ('" +
2298 CSharpName (t) + "')");
2303 /// Returns the name of the indexer in a given type.
2306 /// The default is not always `Item'. The user can change this behaviour by
2307 /// using the IndexerNameAttribute in the container.
2308 /// For example, the String class indexer is named `Chars' not `Item'
2310 public static string IndexerPropertyName (Type t)
2312 if (t is TypeBuilder) {
2313 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2314 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2317 System.Attribute attr = System.Attribute.GetCustomAttribute (
2318 t, TypeManager.default_member_type);
2320 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2321 return dma.MemberName;
2324 return TypeContainer.DefaultIndexerName;
2327 static MethodInfo declare_local_method = null;
2329 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2331 if (declare_local_method == null){
2332 declare_local_method = typeof (ILGenerator).GetMethod (
2334 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2336 new Type [] { typeof (Type), typeof (bool)},
2338 if (declare_local_method == null){
2339 Report.Warning (-24, new Location (-1),
2340 "This version of the runtime does not support making pinned local variables. " +
2341 "This code may cause errors on a runtime with a moving GC");
2342 return ig.DeclareLocal (t);
2345 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2349 // Returns whether the array of memberinfos contains the given method
2351 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2353 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2355 foreach (MethodBase method in array) {
2356 if (method.Name != new_method.Name)
2359 if (method is MethodInfo && new_method is MethodInfo)
2360 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2364 Type [] old_args = TypeManager.GetArgumentTypes (method);
2365 int old_count = old_args.Length;
2368 if (new_args.Length != old_count)
2371 for (i = 0; i < old_count; i++){
2372 if (old_args [i] != new_args [i])
2385 // We copy methods from `new_members' into `target_list' if the signature
2386 // for the method from in the new list does not exist in the target_list
2388 // The name is assumed to be the same.
2390 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2392 if (target_list == null){
2393 target_list = new ArrayList ();
2395 foreach (MemberInfo mi in new_members){
2396 if (mi is MethodBase)
2397 target_list.Add (mi);
2402 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2403 target_list.CopyTo (target_array, 0);
2405 foreach (MemberInfo mi in new_members){
2406 MethodBase new_method = (MethodBase) mi;
2408 if (!ArrayContainsMethod (target_array, new_method))
2409 target_list.Add (new_method);
2415 #region MemberLookup implementation
2418 // Whether we allow private members in the result (since FindMembers
2419 // uses NonPublic for both protected and private), we need to distinguish.
2422 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2427 internal class Closure {
2428 internal bool private_ok;
2430 // Who is invoking us and which type is being queried currently.
2431 internal Type invocation_type;
2432 internal Type qualifier_type;
2434 // The assembly that defines the type is that is calling us
2435 internal Assembly invocation_assembly;
2436 internal IList almost_match;
2438 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2440 if (invocation_type == null)
2443 Debug.Assert (IsNestedFamilyAccessible (invocation_type, m.DeclaringType));
2448 // A nested class has access to all the protected members visible to its parent.
2449 if (qualifier_type != null
2450 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2453 if (invocation_type == m.DeclaringType
2454 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2455 // Although a derived class can access protected members of its base class
2456 // it cannot do so through an instance of the base class (CS1540).
2457 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2458 if (qualifier_type == null
2459 || qualifier_type == invocation_type
2460 || qualifier_type.IsSubclassOf (invocation_type))
2464 if (almost_match != null)
2465 almost_match.Add (m);
2470 // This filter filters by name + whether it is ok to include private
2471 // members in the search
2473 internal bool Filter (MemberInfo m, object filter_criteria)
2476 // Hack: we know that the filter criteria will always be in the `closure'
2480 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2483 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2484 (m.DeclaringType == invocation_type))
2488 // Ugly: we need to find out the type of `m', and depending
2489 // on this, tell whether we accept or not
2491 if (m is MethodBase){
2492 MethodBase mb = (MethodBase) m;
2493 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2495 if (ma == MethodAttributes.Private)
2496 return private_ok || (invocation_type == m.DeclaringType) ||
2497 IsNestedChildOf (invocation_type, m.DeclaringType);
2499 // Assembly succeeds if we're in the same assembly.
2500 if (ma == MethodAttributes.Assembly)
2501 return (invocation_assembly == mb.DeclaringType.Assembly);
2503 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2504 if (ma == MethodAttributes.FamANDAssem){
2505 if (invocation_assembly != mb.DeclaringType.Assembly)
2509 // Family and FamANDAssem require that we derive.
2510 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem))
2511 return CheckValidFamilyAccess (mb.IsStatic, m);
2517 if (m is FieldInfo){
2518 FieldInfo fi = (FieldInfo) m;
2519 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2521 if (fa == FieldAttributes.Private)
2522 return private_ok || (invocation_type == m.DeclaringType) ||
2523 IsNestedChildOf (invocation_type, m.DeclaringType);
2525 // Assembly succeeds if we're in the same assembly.
2526 if (fa == FieldAttributes.Assembly)
2527 return (invocation_assembly == fi.DeclaringType.Assembly);
2529 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2530 if (fa == FieldAttributes.FamANDAssem){
2531 if (invocation_assembly != fi.DeclaringType.Assembly)
2535 // Family and FamANDAssem require that we derive.
2536 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem))
2537 return CheckValidFamilyAccess (fi.IsStatic, m);
2544 // EventInfos and PropertyInfos, return true because they lack permission
2545 // information, so we need to check later on the methods.
2551 static Closure closure = new Closure ();
2552 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2555 // Looks up a member called `name' in the `queried_type'. This lookup
2556 // is done by code that is contained in the definition for `invocation_type'
2557 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2559 // `invocation_type' is used to check whether we're allowed to access the requested
2560 // member wrt its protection level.
2562 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2563 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2564 // is B and qualifier_type is A). This is used to do the CS1540 check.
2566 // When resolving a SimpleName, `qualifier_type' is null.
2568 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2569 // the same than `queried_type' - except when we're being called from BaseAccess;
2570 // in this case, `invocation_type' is the current type and `queried_type' the base
2571 // type, so this'd normally trigger a CS1540.
2573 // The binding flags are `bf' and the kind of members being looked up are `mt'
2575 // The return value always includes private members which code in `invocation_type'
2576 // is allowed to access (using the specified `qualifier_type' if given); only use
2577 // BindingFlags.NonPublic to bypass the permission check.
2579 // The 'almost_match' argument is used for reporting error CS1540.
2581 // Returns an array of a single element for everything but Methods/Constructors
2582 // that might return multiple matches.
2584 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2585 Type queried_type, MemberTypes mt,
2586 BindingFlags original_bf, string name, IList almost_match)
2588 Timer.StartTimer (TimerType.MemberLookup);
2590 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2591 queried_type, mt, original_bf, name, almost_match);
2593 Timer.StopTimer (TimerType.MemberLookup);
2598 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2599 Type queried_type, MemberTypes mt,
2600 BindingFlags original_bf, string name, IList almost_match)
2602 BindingFlags bf = original_bf;
2604 ArrayList method_list = null;
2605 Type current_type = queried_type;
2606 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2607 bool skip_iface_check = true, used_cache = false;
2608 bool always_ok_flag = false;
2610 closure.invocation_type = invocation_type;
2611 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2612 closure.qualifier_type = qualifier_type;
2613 closure.almost_match = almost_match;
2616 // If we are a nested class, we always have access to our container
2619 if (invocation_type != null){
2620 string invocation_name = invocation_type.FullName;
2621 if (invocation_name.IndexOf ('+') != -1){
2622 string container = queried_type.FullName + "+";
2623 int container_length = container.Length;
2625 if (invocation_name.Length > container_length){
2626 string shared = invocation_name.Substring (0, container_length);
2628 if (shared == container)
2629 always_ok_flag = true;
2634 // This is from the first time we find a method
2635 // in most cases, we do not actually find a method in the base class
2636 // so we can just ignore it, and save the arraylist allocation
2637 MemberInfo [] first_members_list = null;
2638 bool use_first_members_list = false;
2644 // `NonPublic' is lame, because it includes both protected and
2645 // private methods, so we need to control this behavior by
2646 // explicitly tracking if a private method is ok or not.
2648 // The possible cases are:
2649 // public, private and protected (internal does not come into the
2652 if ((invocation_type != null) &&
2653 ((invocation_type == current_type) ||
2654 IsNestedChildOf (invocation_type, current_type)) ||
2656 bf = original_bf | BindingFlags.NonPublic;
2660 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2662 Timer.StopTimer (TimerType.MemberLookup);
2664 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2666 Timer.StartTimer (TimerType.MemberLookup);
2669 // When queried for an interface type, the cache will automatically check all
2670 // inherited members, so we don't need to do this here. However, this only
2671 // works if we already used the cache in the first iteration of this loop.
2673 // If we used the cache in any further iteration, we can still terminate the
2674 // loop since the cache always looks in all parent classes.
2680 skip_iface_check = false;
2682 if (current_type == TypeManager.object_type)
2685 current_type = current_type.BaseType;
2688 // This happens with interfaces, they have a null
2689 // basetype. Look members up in the Object class.
2691 if (current_type == null) {
2692 current_type = TypeManager.object_type;
2697 if (list.Length == 0)
2701 // Events and types are returned by both `static' and `instance'
2702 // searches, which means that our above FindMembers will
2703 // return two copies of the same.
2705 if (list.Length == 1 && !(list [0] is MethodBase)){
2710 // Multiple properties: we query those just to find out the indexer
2713 if (list [0] is PropertyInfo)
2717 // We found an event: the cache lookup returns both the event and
2718 // its private field.
2720 if (list [0] is EventInfo) {
2721 if ((list.Length == 2) && (list [1] is FieldInfo))
2722 return new MemberInfo [] { list [0] };
2729 // We found methods, turn the search into "method scan"
2733 if (first_members_list != null) {
2734 if (use_first_members_list) {
2735 method_list = CopyNewMethods (method_list, first_members_list);
2736 use_first_members_list = false;
2739 method_list = CopyNewMethods (method_list, list);
2741 first_members_list = list;
2742 use_first_members_list = true;
2743 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2745 } while (searching);
2747 if (use_first_members_list) {
2748 foreach (MemberInfo mi in first_members_list) {
2749 if (! (mi is MethodBase)) {
2750 method_list = CopyNewMethods (method_list, first_members_list);
2751 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2754 return (MemberInfo []) first_members_list;
2757 if (method_list != null && method_list.Count > 0)
2758 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2761 // This happens if we already used the cache in the first iteration, in this case
2762 // the cache already looked in all interfaces.
2764 if (skip_iface_check)
2768 // Interfaces do not list members they inherit, so we have to
2771 if (!queried_type.IsInterface)
2774 if (queried_type.IsArray)
2775 queried_type = TypeManager.array_type;
2777 Type [] ifaces = GetInterfaces (queried_type);
2781 foreach (Type itype in ifaces){
2784 x = MemberLookup (null, null, itype, mt, bf, name, null);
2792 // Tests whether external method is really special
2793 public static bool IsSpecialMethod (MethodBase mb)
2795 string name = mb.Name;
2796 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2797 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2799 if (name.StartsWith ("add_"))
2800 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2802 if (name.StartsWith ("remove_"))
2803 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2805 if (name.StartsWith ("op_")){
2806 foreach (string oname in Unary.oper_names) {
2811 foreach (string oname in Binary.oper_names) {
2824 /// There is exactly one instance of this class per type.
2826 public sealed class TypeHandle : IMemberContainer {
2827 public readonly TypeHandle BaseType;
2829 readonly int id = ++next_id;
2830 static int next_id = 0;
2833 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2834 /// a TypeHandle yet, a new instance of it is created. This static method
2835 /// ensures that we'll only have one TypeHandle instance per type.
2837 private static TypeHandle GetTypeHandle (Type t)
2839 TypeHandle handle = (TypeHandle) type_hash [t];
2843 handle = new TypeHandle (t);
2844 type_hash.Add (t, handle);
2848 public static MemberCache GetMemberCache (Type t)
2850 return GetTypeHandle (t).MemberCache;
2853 public static void CleanUp ()
2859 /// Returns the TypeHandle for TypeManager.object_type.
2861 public static IMemberContainer ObjectType {
2863 if (object_type != null)
2866 object_type = GetTypeHandle (TypeManager.object_type);
2873 /// Returns the TypeHandle for TypeManager.array_type.
2875 public static IMemberContainer ArrayType {
2877 if (array_type != null)
2880 array_type = GetTypeHandle (TypeManager.array_type);
2886 private static PtrHashtable type_hash = new PtrHashtable ();
2888 private static TypeHandle object_type = null;
2889 private static TypeHandle array_type = null;
2892 private bool is_interface;
2893 private MemberCache member_cache;
2894 private MemberCache parent_cache;
2896 private TypeHandle (Type type)
2899 if (type.BaseType != null) {
2900 BaseType = GetTypeHandle (type.BaseType);
2901 parent_cache = BaseType.MemberCache;
2902 } else if (type.IsInterface)
2903 parent_cache = TypeManager.LookupParentInterfacesCache (type);
2904 this.is_interface = type.IsInterface;
2905 this.member_cache = new MemberCache (this);
2908 // IMemberContainer methods
2910 public string Name {
2912 return type.FullName;
2922 public MemberCache ParentCache {
2924 return parent_cache;
2928 public bool IsInterface {
2930 return is_interface;
2934 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2936 MemberInfo [] members;
2937 if (mt == MemberTypes.Event)
2938 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2940 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2942 Array.Reverse (members);
2944 return new MemberList (members);
2947 // IMemberFinder methods
2949 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2950 MemberFilter filter, object criteria)
2952 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
2955 public MemberCache MemberCache {
2957 return member_cache;
2961 public override string ToString ()
2963 if (BaseType != null)
2964 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2966 return "TypeHandle (" + id + "," + Name + ")";