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 out_attribute_type;
93 static public Type anonymous_method_type;
94 static public Type cls_compliant_attribute_type;
95 static public Type typed_reference_type;
96 static public Type arg_iterator_type;
97 static public Type mbr_type;
98 static public Type struct_layout_attribute_type;
99 static public Type field_offset_attribute_type;
100 static public Type security_attr_type;
106 static internal Type compiler_generated_attr_type;
107 static internal Type fixed_buffer_attr_type;
111 // An empty array of types
113 static public Type [] NoTypes;
114 static public TypeExpr [] NoTypeExprs;
118 // Expressions representing the internal types. Used during declaration
121 static public TypeExpr system_object_expr, system_string_expr;
122 static public TypeExpr system_boolean_expr, system_decimal_expr;
123 static public TypeExpr system_single_expr, system_double_expr;
124 static public TypeExpr system_sbyte_expr, system_byte_expr;
125 static public TypeExpr system_int16_expr, system_uint16_expr;
126 static public TypeExpr system_int32_expr, system_uint32_expr;
127 static public TypeExpr system_int64_expr, system_uint64_expr;
128 static public TypeExpr system_char_expr, system_void_expr;
129 static public TypeExpr system_asynccallback_expr;
130 static public TypeExpr system_iasyncresult_expr;
131 static public TypeExpr system_valuetype_expr;
132 static public TypeExpr system_intptr_expr;
135 // This is only used when compiling corlib
137 static public Type system_int32_type;
138 static public Type system_array_type;
139 static public Type system_type_type;
140 static public Type system_assemblybuilder_type;
141 static public MethodInfo system_int_array_get_length;
142 static public MethodInfo system_int_array_get_rank;
143 static public MethodInfo system_object_array_clone;
144 static public MethodInfo system_int_array_get_length_int;
145 static public MethodInfo system_int_array_get_lower_bound_int;
146 static public MethodInfo system_int_array_get_upper_bound_int;
147 static public MethodInfo system_void_array_copyto_array_int;
151 // Internal, not really used outside
153 static Type runtime_helpers_type;
156 // These methods are called by code generated by the compiler
158 static public MethodInfo string_concat_string_string;
159 static public MethodInfo string_concat_string_string_string;
160 static public MethodInfo string_concat_string_string_string_string;
161 static public MethodInfo string_concat_string_dot_dot_dot;
162 static public MethodInfo string_concat_object_object;
163 static public MethodInfo string_concat_object_object_object;
164 static public MethodInfo string_concat_object_dot_dot_dot;
165 static public MethodInfo string_isinterneted_string;
166 static public MethodInfo system_type_get_type_from_handle;
167 static public MethodInfo object_getcurrent_void;
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;
188 // The attribute constructors.
190 static public ConstructorInfo object_ctor;
191 static public ConstructorInfo cons_param_array_attribute;
192 static public ConstructorInfo void_decimal_ctor_five_args;
193 static public ConstructorInfo void_decimal_ctor_int_arg;
194 static public ConstructorInfo unverifiable_code_ctor;
195 static public ConstructorInfo default_member_ctor;
196 static public ConstructorInfo decimal_constant_attribute_ctor;
197 static internal ConstructorInfo struct_layout_attribute_ctor;
203 static internal CustomAttributeBuilder compiler_generated_attr;
204 static internal ConstructorInfo fixed_buffer_attr_ctor;
208 // Holds the Array of Assemblies that have been loaded
209 // (either because it is the default or the user used the
210 // -r command line option)
212 static Assembly [] assemblies;
215 // Keeps a list of modules. We used this to do lookups
216 // on the module using GetType -- needed for arrays
218 static Module [] modules;
221 // This is the type_cache from the assemblies to avoid
222 // hitting System.Reflection on every lookup.
224 static Hashtable types;
227 // This is used to hotld the corresponding TypeContainer objects
228 // since we need this in FindMembers
230 static Hashtable typecontainers;
233 // Keeps track of those types that are defined by the
236 static ArrayList user_types;
238 static PtrHashtable builder_to_declspace;
240 static PtrHashtable builder_to_member_cache;
243 // Tracks the interfaces implemented by typebuilders. We only
244 // enter those who do implement or or more interfaces
246 static PtrHashtable builder_to_ifaces;
249 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
250 // the arguments to the method
252 static Hashtable method_arguments;
255 // Maps PropertyBuilder to a Type array that contains
256 // the arguments to the indexer
258 static Hashtable indexer_arguments;
261 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
263 static Hashtable method_params;
266 // Keeps track of methods
269 static Hashtable builder_to_method;
272 // Contains all public types from referenced assemblies.
273 // This member is used only if CLS Compliance verification is required.
275 public static Hashtable all_imported_types;
277 static Hashtable negative_hits;
278 static Hashtable fieldbuilders_to_fields;
279 static Hashtable fields;
280 static Hashtable references;
287 public static void CleanUp ()
289 // Lets get everything clean so that we can collect before generating code
293 typecontainers = null;
295 builder_to_declspace = null;
296 builder_to_member_cache = null;
297 builder_to_ifaces = null;
298 method_arguments = null;
299 indexer_arguments = null;
300 method_params = null;
301 builder_to_method = null;
305 negative_hits = null;
306 builder_to_constant = null;
307 fieldbuilders_to_fields = null;
309 priv_fields_events = null;
312 TypeHandle.CleanUp ();
316 /// A filter for Findmembers that uses the Signature object to
319 static bool SignatureFilter (MemberInfo mi, object criteria)
321 Signature sig = (Signature) criteria;
323 if (!(mi is MethodBase))
326 if (mi.Name != sig.name)
329 int count = sig.args.Length;
331 if (mi is MethodBuilder || mi is ConstructorBuilder){
332 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
334 if (candidate_args.Length != count)
337 for (int i = 0; i < count; i++)
338 if (candidate_args [i] != sig.args [i])
343 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
345 if (pars.Length != count)
348 for (int i = 0; i < count; i++)
349 if (pars [i].ParameterType != sig.args [i])
355 // A delegate that points to the filter above.
356 static MemberFilter signature_filter;
359 // These are expressions that represent some of the internal data types, used
362 static void InitExpressionTypes ()
364 system_object_expr = new TypeLookupExpression ("System.Object");
365 system_string_expr = new TypeLookupExpression ("System.String");
366 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
367 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
368 system_single_expr = new TypeLookupExpression ("System.Single");
369 system_double_expr = new TypeLookupExpression ("System.Double");
370 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
371 system_byte_expr = new TypeLookupExpression ("System.Byte");
372 system_int16_expr = new TypeLookupExpression ("System.Int16");
373 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
374 system_int32_expr = new TypeLookupExpression ("System.Int32");
375 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
376 system_int64_expr = new TypeLookupExpression ("System.Int64");
377 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
378 system_char_expr = new TypeLookupExpression ("System.Char");
379 system_void_expr = new TypeLookupExpression ("System.Void");
380 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
381 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
382 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
383 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
386 static TypeManager ()
390 signature_filter = new MemberFilter (SignatureFilter);
391 InitExpressionTypes ();
394 static public void Reset ()
396 assemblies = new Assembly [0];
398 user_types = new ArrayList ();
400 types = new Hashtable ();
401 typecontainers = new Hashtable ();
403 builder_to_declspace = new PtrHashtable ();
404 builder_to_member_cache = new PtrHashtable ();
405 builder_to_method = new PtrHashtable ();
406 method_arguments = new PtrHashtable ();
407 method_params = new PtrHashtable ();
408 indexer_arguments = new PtrHashtable ();
409 builder_to_ifaces = new PtrHashtable ();
411 NoTypes = new Type [0];
412 NoTypeExprs = new TypeExpr [0];
414 negative_hits = new Hashtable ();
415 fieldbuilders_to_fields = new Hashtable ();
416 fields = new Hashtable ();
417 references = new Hashtable ();
420 public static void HandleDuplicate (string name, Type t)
422 Type prev = (Type) types [name];
423 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
427 // This probably never happens, as we catch this before
429 Report.Error (-17, "The type `" + name + "' has already been defined.");
433 tc = builder_to_declspace [t] as TypeContainer;
436 1595, "The type `" + name + "' is defined in an existing assembly;"+
437 " Using the new definition from: " + tc.Location);
440 1595, "The type `" + name + "' is defined in an existing assembly;");
443 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
449 public static void AddUserType (string name, TypeBuilder t)
454 HandleDuplicate (name, t);
457 negative_hits.Remove (t);
463 // This entry point is used by types that we define under the covers
465 public static void RegisterBuilder (Type tb, Type [] ifaces)
468 builder_to_ifaces [tb] = ifaces;
471 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc)
473 builder_to_declspace.Add (t, tc);
474 typecontainers.Add (name, tc);
475 AddUserType (name, t);
478 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
483 HandleDuplicate (name, t);
486 builder_to_declspace.Add (t, del);
489 public static void AddEnumType (string name, TypeBuilder t, Enum en)
494 HandleDuplicate (name, t);
496 builder_to_declspace.Add (t, en);
499 public static void AddMethod (MethodBase builder, IMethodData method)
501 builder_to_method.Add (builder, method);
504 public static IMethodData GetMethod (MethodBase builder)
506 return (IMethodData) builder_to_method [builder];
510 /// Returns the DeclSpace whose Type is `t' or null if there is no
511 /// DeclSpace for `t' (ie, the Type comes from a library)
513 public static DeclSpace LookupDeclSpace (Type t)
515 return builder_to_declspace [t] as DeclSpace;
519 /// Returns the TypeContainer whose Type is `t' or null if there is no
520 /// TypeContainer for `t' (ie, the Type comes from a library)
522 public static TypeContainer LookupTypeContainer (Type t)
524 return builder_to_declspace [t] as TypeContainer;
527 public static MemberCache LookupMemberCache (Type t)
529 if (t is TypeBuilder) {
530 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
531 if (container != null)
532 return container.MemberCache;
535 return TypeHandle.GetMemberCache (t);
538 public static MemberCache LookupBaseInterfacesCache (Type t)
540 Type [] ifaces = t.GetInterfaces ();
542 if (ifaces != null && ifaces.Length == 1)
543 return LookupMemberCache (ifaces [0]);
545 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
546 MemberCache cache = builder_to_member_cache [t] as MemberCache;
550 cache = new MemberCache (ifaces);
551 builder_to_member_cache.Add (t, cache);
555 public static TypeContainer LookupInterface (Type t)
557 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
558 if ((tc == null) || (tc.Kind != Kind.Interface))
564 public static Delegate LookupDelegate (Type t)
566 return builder_to_declspace [t] as Delegate;
569 public static Enum LookupEnum (Type t)
571 return builder_to_declspace [t] as Enum;
574 public static Class LookupClass (Type t)
576 return (Class) builder_to_declspace [t];
580 /// Registers an assembly to load types from.
582 public static void AddAssembly (Assembly a)
584 foreach (Assembly assembly in assemblies) {
589 int top = assemblies.Length;
590 Assembly [] n = new Assembly [top + 1];
592 assemblies.CopyTo (n, 0);
598 public static Assembly [] GetAssemblies ()
604 /// Registers a module builder to lookup types from
606 public static void AddModule (Module mb)
608 int top = modules != null ? modules.Length : 0;
609 Module [] n = new Module [top + 1];
612 modules.CopyTo (n, 0);
617 public static Module[] Modules {
624 // Gets the reference to T version of the Type (T&)
626 public static Type GetReferenceType (Type t)
628 string tname = t.FullName + "&";
630 Type ret = t.Assembly.GetType (tname);
633 // If the type comes from the assembly we are building
634 // We need the Hashtable, because .NET 1.1 will return different instance types
635 // every time we call ModuleBuilder.GetType.
638 if (references [t] == null)
639 references [t] = CodeGen.Module.Builder.GetType (tname);
640 ret = (Type) references [t];
646 static Hashtable pointers = new Hashtable ();
649 // Gets the pointer to T version of the Type (T*)
651 public static Type GetPointerType (Type t)
653 string tname = t.FullName + "*";
655 Type ret = t.Assembly.GetType (tname);
658 // If the type comes from the assembly we are building
659 // We need the Hashtable, because .NET 1.1 will return different instance types
660 // every time we call ModuleBuilder.GetType.
663 if (pointers [t] == null)
664 pointers [t] = CodeGen.Module.Builder.GetType (tname);
666 ret = (Type) pointers [t];
673 // Low-level lookup, cache-less
675 static Type LookupTypeReflection (string name)
679 foreach (Assembly a in assemblies){
680 t = a.GetType (name);
685 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
686 if (ta == TypeAttributes.NotPublic ||
687 ta == TypeAttributes.NestedPrivate ||
688 ta == TypeAttributes.NestedAssembly ||
689 ta == TypeAttributes.NestedFamANDAssem){
692 // In .NET pointers turn out to be private, even if their
693 // element type is not
696 t = t.GetElementType ();
706 foreach (Module mb in modules) {
707 t = mb.GetType (name);
716 // This function is used when you want to avoid the lookups, and want to go
717 // directly to the source. This will use the cache.
719 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
720 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
721 // way to test things other than doing a fullname compare
723 public static Type LookupTypeDirect (string name)
725 Type t = (Type) types [name];
729 if (negative_hits.Contains (name))
732 t = LookupTypeReflection (name);
735 negative_hits [name] = null;
742 static readonly char [] dot_array = { '.' };
745 /// Returns the Type associated with @name, takes care of the fact that
746 /// reflection expects nested types to be separated from the main type
747 /// with a "+" instead of a "."
749 public static Type LookupType (string name)
754 // First lookup in user defined and cached values
757 t = LookupTypeDirect (name);
761 string [] elements = name.Split (dot_array);
762 int count = elements.Length;
767 string top_level_type = elements [0];
770 t = LookupTypeDirect (top_level_type);
778 top_level_type = top_level_type + "." + elements [n++];
782 // We know that System.Object does not have children, and since its the base of
783 // all the objects, it always gets probed for inner classes.
785 if (top_level_type == "System.Object")
788 string nested_type = top_level_type + "+" + String.Join ("+", elements, n, count - n);
789 //Console.WriteLine ("Looking up: " + newt + " " + name);
791 t = LookupTypeDirect (nested_type);
793 // Cache the dotted version of the name too.
795 negative_hits [name] = null;
802 /// Computes the namespaces that we import from the assemblies we reference.
804 public static void ComputeNamespaces ()
806 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
808 Hashtable cache = null;
811 // First add the assembly namespaces
813 if (assembly_get_namespaces != null){
814 int count = assemblies.Length;
816 for (int i = 0; i < count; i++){
817 Assembly a = assemblies [i];
818 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
819 foreach (string ns in namespaces){
822 Namespace.LookupNamespace (ns, true);
826 cache = new Hashtable ();
827 cache.Add ("", null);
828 foreach (Assembly a in assemblies) {
829 foreach (Type t in a.GetExportedTypes ()) {
830 string ns = t.Namespace;
831 if (ns == null || cache.Contains (ns))
834 Namespace.LookupNamespace (ns, true);
835 cache.Add (ns, null);
841 // Then add module namespaces
843 foreach (Module m in modules) {
844 if (m == CodeGen.Module.Builder)
847 cache = new Hashtable ();
848 cache.Add ("", null);
850 foreach (Type t in m.GetTypes ()) {
851 string ns = t.Namespace;
852 if (ns == null || cache.Contains (ns))
854 Namespace.LookupNamespace (ns, true);
855 cache.Add (ns, null);
861 /// Fills static table with exported types from all referenced assemblies.
862 /// This information is required for CLS Compliance tests.
864 public static void LoadAllImportedTypes ()
866 all_imported_types = new Hashtable ();
867 foreach (Assembly a in assemblies) {
868 foreach (Type t in a.GetExportedTypes ()) {
869 all_imported_types [t.FullName] = t;
874 public static bool NamespaceClash (string name, Location loc)
876 if (Namespace.LookupNamespace (name, false) == null)
879 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
884 /// Returns the C# name of a type if possible, or the full type name otherwise
886 static public string CSharpName (Type t)
888 return Regex.Replace (t.FullName,
890 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
891 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
892 @"Boolean|String|Void|Null)" +
894 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
897 static public string CSharpName (Type[] types)
899 StringBuilder sb = new StringBuilder ();
900 foreach (Type t in types) {
901 sb.Append (CSharpName (t));
904 sb.Remove (sb.Length - 1, 1);
905 return sb.ToString ();
908 static String CSharpNameMatch (Match match)
910 string s = match.Groups [1].Captures [0].Value;
912 Replace ("int32", "int").
913 Replace ("uint32", "uint").
914 Replace ("int16", "short").
915 Replace ("uint16", "ushort").
916 Replace ("int64", "long").
917 Replace ("uint64", "ulong").
918 Replace ("single", "float").
919 Replace ("boolean", "bool")
920 + match.Groups [2].Captures [0].Value;
924 /// Returns the signature of the method with full namespace classification
926 static public string GetFullNameSignature (MemberInfo mi)
928 // Unfortunately, there's no dynamic dispatch on the arguments of a function.
929 return (mi is MethodBase)
930 ? GetFullNameSignature (mi as MethodBase)
931 : mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
934 static public string GetFullNameSignature (MethodBase mb)
936 string name = mb.Name;
938 name = mb.DeclaringType.Name;
940 if (mb.IsSpecialName) {
941 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
942 name = name.Remove (0, 4);
949 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
953 /// Returns the signature of the property and indexer
955 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
958 return GetFullNameSignature (pb);
961 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
962 string signature = GetFullNameSignature (mb);
963 string arg = GetParameterData (mb).ParameterDesc (0);
964 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
968 /// Returns the signature of the method
970 static public string CSharpSignature (MethodBase mb)
972 StringBuilder sig = new StringBuilder ("(");
974 ParameterData iparams = GetParameterData (mb);
977 if (mb.IsSpecialName && iparams.Count == 0 && !mb.IsConstructor)
978 return GetFullNameSignature (mb);
980 for (int i = 0; i < iparams.Count; i++) {
984 sig.Append (iparams.ParameterDesc (i));
989 if (mb.IsSpecialName && iparams.Count == 1 && !mb.IsConstructor) {
990 sig.Replace ('(', '[');
991 sig.Replace (')', ']');
994 return GetFullNameSignature (mb) + sig.ToString ();
998 /// Looks up a type, and aborts if it is not found. This is used
999 /// by types required by the compiler
1001 static Type CoreLookupType (string name)
1003 Type t = LookupTypeDirect (name);
1006 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
1012 /// Returns the MethodInfo for a method named `name' defined
1013 /// in type `t' which takes arguments of types `args'
1015 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
1019 BindingFlags flags = instance_and_static | BindingFlags.Public;
1025 flags |= BindingFlags.NonPublic;
1027 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
1028 if (list.Count == 0) {
1030 Report.Error (-19, "Can not find the core function `" + name + "'");
1034 MethodInfo mi = list [0] as MethodInfo;
1037 Report.Error (-19, "Can not find the core function `" + name + "'");
1044 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
1046 return GetMethod (t, name, args, false, report_errors);
1049 static MethodInfo GetMethod (Type t, string name, Type [] args)
1051 return GetMethod (t, name, args, true);
1056 /// Returns the ConstructorInfo for "args"
1058 static ConstructorInfo GetConstructor (Type t, Type [] args)
1066 list = FindMembers (t, MemberTypes.Constructor,
1067 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1068 signature_filter, sig);
1069 if (list.Count == 0){
1070 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1074 ConstructorInfo ci = list [0] as ConstructorInfo;
1076 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1083 public static void InitEnumUnderlyingTypes ()
1086 int32_type = CoreLookupType ("System.Int32");
1087 int64_type = CoreLookupType ("System.Int64");
1088 uint32_type = CoreLookupType ("System.UInt32");
1089 uint64_type = CoreLookupType ("System.UInt64");
1090 byte_type = CoreLookupType ("System.Byte");
1091 sbyte_type = CoreLookupType ("System.SByte");
1092 short_type = CoreLookupType ("System.Int16");
1093 ushort_type = CoreLookupType ("System.UInt16");
1097 /// The types have to be initialized after the initial
1098 /// population of the type has happened (for example, to
1099 /// bootstrap the corlib.dll
1101 public static void InitCoreTypes ()
1103 object_type = CoreLookupType ("System.Object");
1104 value_type = CoreLookupType ("System.ValueType");
1106 InitEnumUnderlyingTypes ();
1108 char_type = CoreLookupType ("System.Char");
1109 string_type = CoreLookupType ("System.String");
1110 float_type = CoreLookupType ("System.Single");
1111 double_type = CoreLookupType ("System.Double");
1112 char_ptr_type = CoreLookupType ("System.Char*");
1113 decimal_type = CoreLookupType ("System.Decimal");
1114 bool_type = CoreLookupType ("System.Boolean");
1115 enum_type = CoreLookupType ("System.Enum");
1117 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1118 delegate_type = CoreLookupType ("System.Delegate");
1120 array_type = CoreLookupType ("System.Array");
1121 void_type = CoreLookupType ("System.Void");
1122 type_type = CoreLookupType ("System.Type");
1124 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1125 runtime_argument_handle_type = CoreLookupType ("System.RuntimeArgumentHandle");
1126 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1127 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1128 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1129 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1130 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1131 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1132 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1133 idisposable_type = CoreLookupType ("System.IDisposable");
1134 icloneable_type = CoreLookupType ("System.ICloneable");
1135 iconvertible_type = CoreLookupType ("System.IConvertible");
1136 monitor_type = CoreLookupType ("System.Threading.Monitor");
1137 intptr_type = CoreLookupType ("System.IntPtr");
1139 attribute_type = CoreLookupType ("System.Attribute");
1140 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1141 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1142 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1143 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1144 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1145 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1146 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices.OutAttribute");
1147 typed_reference_type = CoreLookupType ("System.TypedReference");
1148 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1149 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1150 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices.DecimalConstantAttribute");
1153 // Sigh. Remove this before the release. Wonder what versions of Mono
1154 // people are running.
1156 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1158 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1160 void_ptr_type = CoreLookupType ("System.Void*");
1162 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1164 exception_type = CoreLookupType ("System.Exception");
1165 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1166 not_supported_exception_type = CoreLookupType ("System.NotSupportedException");
1171 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1172 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1173 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1174 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1175 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1176 security_attr_type = CoreLookupType ("System.Security.Permissions.SecurityAttribute");
1182 compiler_generated_attr_type = CoreLookupType ("System.Runtime.CompilerServices.CompilerGeneratedAttribute");
1183 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices.FixedBufferAttribute");
1186 // When compiling corlib, store the "real" types here.
1188 if (!RootContext.StdLib) {
1189 system_int32_type = typeof (System.Int32);
1190 system_array_type = typeof (System.Array);
1191 system_type_type = typeof (System.Type);
1192 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1194 Type [] void_arg = { };
1195 system_int_array_get_length = GetMethod (
1196 system_array_type, "get_Length", void_arg);
1197 system_int_array_get_rank = GetMethod (
1198 system_array_type, "get_Rank", void_arg);
1199 system_object_array_clone = GetMethod (
1200 system_array_type, "Clone", void_arg);
1202 Type [] system_int_arg = { system_int32_type };
1203 system_int_array_get_length_int = GetMethod (
1204 system_array_type, "GetLength", system_int_arg);
1205 system_int_array_get_upper_bound_int = GetMethod (
1206 system_array_type, "GetUpperBound", system_int_arg);
1207 system_int_array_get_lower_bound_int = GetMethod (
1208 system_array_type, "GetLowerBound", system_int_arg);
1210 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1211 system_void_array_copyto_array_int = GetMethod (
1212 system_array_type, "CopyTo", system_array_int_arg);
1214 Type [] system_3_type_arg = {
1215 system_type_type, system_type_type, system_type_type };
1216 Type [] system_4_type_arg = {
1217 system_type_type, system_type_type, system_type_type, system_type_type };
1219 MethodInfo set_corlib_type_builders = GetMethod (
1220 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1221 system_4_type_arg, true, false);
1223 if (set_corlib_type_builders != null) {
1224 object[] args = new object [4];
1225 args [0] = object_type;
1226 args [1] = value_type;
1227 args [2] = enum_type;
1228 args [3] = void_type;
1230 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1232 // Compatibility for an older version of the class libs.
1233 set_corlib_type_builders = GetMethod (
1234 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1235 system_3_type_arg, true, true);
1237 if (set_corlib_type_builders == null) {
1238 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1242 object[] args = new object [3];
1243 args [0] = object_type;
1244 args [1] = value_type;
1245 args [2] = enum_type;
1247 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1251 system_object_expr.Type = object_type;
1252 system_string_expr.Type = string_type;
1253 system_boolean_expr.Type = bool_type;
1254 system_decimal_expr.Type = decimal_type;
1255 system_single_expr.Type = float_type;
1256 system_double_expr.Type = double_type;
1257 system_sbyte_expr.Type = sbyte_type;
1258 system_byte_expr.Type = byte_type;
1259 system_int16_expr.Type = short_type;
1260 system_uint16_expr.Type = ushort_type;
1261 system_int32_expr.Type = int32_type;
1262 system_uint32_expr.Type = uint32_type;
1263 system_int64_expr.Type = int64_type;
1264 system_uint64_expr.Type = uint64_type;
1265 system_char_expr.Type = char_type;
1266 system_void_expr.Type = void_type;
1267 system_asynccallback_expr.Type = asynccallback_type;
1268 system_iasyncresult_expr.Type = iasyncresult_type;
1269 system_valuetype_expr.Type = value_type;
1272 // These are only used for compare purposes
1274 anonymous_method_type = typeof (AnonymousMethod);
1275 null_type = typeof (NullType);
1279 // The helper methods that are used by the compiler
1281 public static void InitCodeHelpers ()
1284 // Now load the default methods that we use.
1286 Type [] string_string = { string_type, string_type };
1287 string_concat_string_string = GetMethod (
1288 string_type, "Concat", string_string);
1289 Type [] string_string_string = { string_type, string_type, string_type };
1290 string_concat_string_string_string = GetMethod (
1291 string_type, "Concat", string_string_string);
1292 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1293 string_concat_string_string_string_string = GetMethod (
1294 string_type, "Concat", string_string_string_string);
1295 Type[] params_string = { TypeManager.LookupTypeDirect ("System.String[]") };
1296 string_concat_string_dot_dot_dot = GetMethod (
1297 string_type, "Concat", params_string);
1299 Type [] object_object = { object_type, object_type };
1300 string_concat_object_object = GetMethod (
1301 string_type, "Concat", object_object);
1302 Type [] object_object_object = { object_type, object_type, object_type };
1303 string_concat_object_object_object = GetMethod (
1304 string_type, "Concat", object_object_object);
1305 Type[] params_object = { TypeManager.LookupTypeDirect ("System.Object[]") };
1306 string_concat_object_dot_dot_dot = GetMethod (
1307 string_type, "Concat", params_object);
1309 Type [] string_ = { string_type };
1310 string_isinterneted_string = GetMethod (
1311 string_type, "IsInterned", string_);
1313 Type [] runtime_type_handle = { runtime_handle_type };
1314 system_type_get_type_from_handle = GetMethod (
1315 type_type, "GetTypeFromHandle", runtime_type_handle);
1317 Type [] delegate_delegate = { delegate_type, delegate_type };
1318 delegate_combine_delegate_delegate = GetMethod (
1319 delegate_type, "Combine", delegate_delegate);
1321 delegate_remove_delegate_delegate = GetMethod (
1322 delegate_type, "Remove", delegate_delegate);
1327 Type [] void_arg = { };
1328 object_getcurrent_void = GetMethod (
1329 ienumerator_type, "get_Current", void_arg);
1330 bool_movenext_void = GetMethod (
1331 ienumerator_type, "MoveNext", void_arg);
1332 void_reset_void = GetMethod (
1333 ienumerator_type, "Reset", void_arg);
1334 void_dispose_void = GetMethod (
1335 idisposable_type, "Dispose", void_arg);
1336 int_get_offset_to_string_data = GetMethod (
1337 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1338 int_array_get_length = GetMethod (
1339 array_type, "get_Length", void_arg);
1340 int_array_get_rank = GetMethod (
1341 array_type, "get_Rank", void_arg);
1342 ienumerable_getenumerator_void = GetMethod (
1343 ienumerable_type, "GetEnumerator", void_arg);
1348 Type [] int_arg = { int32_type };
1349 int_array_get_length_int = GetMethod (
1350 array_type, "GetLength", int_arg);
1351 int_array_get_upper_bound_int = GetMethod (
1352 array_type, "GetUpperBound", int_arg);
1353 int_array_get_lower_bound_int = GetMethod (
1354 array_type, "GetLowerBound", int_arg);
1357 // System.Array methods
1359 object_array_clone = GetMethod (
1360 array_type, "Clone", void_arg);
1361 Type [] array_int_arg = { array_type, int32_type };
1362 void_array_copyto_array_int = GetMethod (
1363 array_type, "CopyTo", array_int_arg);
1368 Type [] object_arg = { object_type };
1369 void_monitor_enter_object = GetMethod (
1370 monitor_type, "Enter", object_arg);
1371 void_monitor_exit_object = GetMethod (
1372 monitor_type, "Exit", object_arg);
1374 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1376 void_initializearray_array_fieldhandle = GetMethod (
1377 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1382 int_getlength_int = GetMethod (
1383 array_type, "GetLength", int_arg);
1386 // Decimal constructors
1388 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1389 void_decimal_ctor_five_args = GetConstructor (
1390 decimal_type, dec_arg);
1392 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1397 cons_param_array_attribute = GetConstructor (param_array_type, void_arg);
1398 unverifiable_code_ctor = GetConstructor (unverifiable_code_type, void_arg);
1399 default_member_ctor = GetConstructor (default_member_type, string_);
1401 Type[] short_arg = { short_type };
1402 struct_layout_attribute_ctor = GetConstructor (struct_layout_attribute_type, short_arg);
1404 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1405 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1412 compiler_generated_attr = new CustomAttributeBuilder (
1413 GetConstructor (compiler_generated_attr_type, void_arg), new object[0]);
1415 Type[] type_int_arg = { type_type, int32_type };
1416 fixed_buffer_attr_ctor = GetConstructor (fixed_buffer_attr_type, type_int_arg);
1420 object_ctor = GetConstructor (object_type, void_arg);
1424 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1427 /// This is the "old", non-cache based FindMembers() function. We cannot use
1428 /// the cache here because there is no member name argument.
1430 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1431 MemberFilter filter, object criteria)
1433 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1436 // `builder_to_declspace' contains all dynamic types.
1440 Timer.StartTimer (TimerType.FindMembers);
1441 list = decl.FindMembers (mt, bf, filter, criteria);
1442 Timer.StopTimer (TimerType.FindMembers);
1447 // We have to take care of arrays specially, because GetType on
1448 // a TypeBuilder array will return a Type, not a TypeBuilder,
1449 // and we can not call FindMembers on this type.
1451 if (t.IsSubclassOf (TypeManager.array_type))
1452 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1455 // Since FindMembers will not lookup both static and instance
1456 // members, we emulate this behaviour here.
1458 if ((bf & instance_and_static) == instance_and_static){
1459 MemberInfo [] i_members = t.FindMembers (
1460 mt, bf & ~BindingFlags.Static, filter, criteria);
1462 int i_len = i_members.Length;
1464 MemberInfo one = i_members [0];
1467 // If any of these are present, we are done!
1469 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1470 return new MemberList (i_members);
1473 MemberInfo [] s_members = t.FindMembers (
1474 mt, bf & ~BindingFlags.Instance, filter, criteria);
1476 int s_len = s_members.Length;
1477 if (i_len > 0 || s_len > 0)
1478 return new MemberList (i_members, s_members);
1481 return new MemberList (i_members);
1483 return new MemberList (s_members);
1487 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1492 /// This method is only called from within MemberLookup. It tries to use the member
1493 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1494 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1495 /// our return value will already contain all inherited members and the caller don't need
1496 /// to check base classes and interfaces anymore.
1498 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1499 string name, out bool used_cache)
1504 // We have to take care of arrays specially, because GetType on
1505 // a TypeBuilder array will return a Type, not a TypeBuilder,
1506 // and we can not call FindMembers on this type.
1508 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1510 return TypeHandle.ArrayType.MemberCache.FindMembers (
1511 mt, bf, name, FilterWithClosure_delegate, null);
1515 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1516 // and we can ask the DeclSpace for the MemberCache.
1518 if (t is TypeBuilder) {
1519 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1520 cache = decl.MemberCache;
1523 // If this DeclSpace has a MemberCache, use it.
1526 if (cache != null) {
1528 return cache.FindMembers (
1529 mt, bf, name, FilterWithClosure_delegate, null);
1532 // If there is no MemberCache, we need to use the "normal" FindMembers.
1533 // Note, this is a VERY uncommon route!
1536 Timer.StartTimer (TimerType.FindMembers);
1537 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1538 FilterWithClosure_delegate, name);
1539 Timer.StopTimer (TimerType.FindMembers);
1542 return (MemberInfo []) list;
1546 // This call will always succeed. There is exactly one TypeHandle instance per
1547 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1548 // the corresponding MemberCache.
1550 cache = TypeHandle.GetMemberCache (t);
1553 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1556 public static bool IsBuiltinType (Type t)
1558 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1559 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1560 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1561 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1567 public static bool IsBuiltinType (TypeContainer tc)
1569 return IsBuiltinType (tc.TypeBuilder);
1573 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1574 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1576 public static bool IsCLRType (Type t)
1578 if (t == object_type || t == int32_type || t == uint32_type ||
1579 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1580 t == char_type || t == short_type || t == bool_type ||
1581 t == sbyte_type || t == byte_type || t == ushort_type)
1587 public static bool IsDelegateType (Type t)
1589 if (t.IsSubclassOf (TypeManager.delegate_type))
1595 public static bool IsEnumType (Type t)
1597 if (t.IsSubclassOf (TypeManager.enum_type))
1602 public static bool IsBuiltinOrEnum (Type t)
1604 if (IsBuiltinType (t))
1614 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1616 public static bool IsUnmanagedType (Type t)
1618 if (IsBuiltinType (t) && t != TypeManager.string_type)
1627 if (IsValueType (t)){
1628 if (t is TypeBuilder){
1629 TypeContainer tc = LookupTypeContainer (t);
1631 if (tc.Fields != null){
1632 foreach (Field f in tc.Fields){
1633 if (f.FieldBuilder.IsStatic)
1635 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1641 FieldInfo [] fields = t.GetFields ();
1643 foreach (FieldInfo f in fields){
1646 if (!IsUnmanagedType (f.FieldType))
1656 public static bool IsValueType (Type t)
1658 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1664 public static bool IsInterfaceType (Type t)
1666 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1670 return tc.Kind == Kind.Interface;
1673 public static bool IsSubclassOf (Type type, Type base_type)
1676 if (type.Equals (base_type))
1679 type = type.BaseType;
1680 } while (type != null);
1685 public static bool IsFamilyAccessible (Type type, Type base_type)
1687 return IsSubclassOf (type, base_type);
1691 // Checks whether `type' is a subclass or nested child of `base_type'.
1693 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1696 if ((type == base_type) || type.IsSubclassOf (base_type))
1699 // Handle nested types.
1700 type = type.DeclaringType;
1701 } while (type != null);
1707 // Checks whether `type' is a nested child of `parent'.
1709 public static bool IsNestedChildOf (Type type, Type parent)
1714 type = type.DeclaringType;
1715 while (type != null) {
1719 type = type.DeclaringType;
1726 // Do the right thing when returning the element type of an
1727 // array type based on whether we are compiling corlib or not
1729 public static Type GetElementType (Type t)
1731 if (RootContext.StdLib)
1732 return t.GetElementType ();
1734 return TypeToCoreType (t.GetElementType ());
1738 /// This method is not implemented by MS runtime for dynamic types
1740 public static bool HasElementType (Type t)
1742 return t.IsArray || t.IsPointer || t.IsByRef;
1746 /// Returns the User Defined Types
1748 public static ArrayList UserTypes {
1754 public static Hashtable TypeContainers {
1756 return typecontainers;
1760 static Hashtable builder_to_constant;
1762 public static void RegisterConstant (FieldBuilder fb, Const c)
1764 if (builder_to_constant == null)
1765 builder_to_constant = new PtrHashtable ();
1767 if (builder_to_constant.Contains (fb))
1770 builder_to_constant.Add (fb, c);
1773 public static Const LookupConstant (FieldBuilder fb)
1775 if (builder_to_constant == null)
1778 return (Const) builder_to_constant [fb];
1782 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1786 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1787 /// for anything which is dynamic, and we need this in a number of places,
1788 /// we register this information here, and use it afterwards.
1790 static public void RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1795 method_arguments.Add (mb, args);
1796 method_params.Add (mb, ip);
1799 static public ParameterData GetParameterData (MethodBase mb)
1801 object pd = method_params [mb];
1803 if (mb is MethodBuilder || mb is ConstructorBuilder)
1804 throw new InternalErrorException ("Argument for Method not registered" + mb);
1806 method_params [mb] = pd = new ReflectionParameters (mb);
1809 return (ParameterData) pd;
1813 /// Returns the argument types for a method based on its methodbase
1815 /// For dynamic methods, we use the compiler provided types, for
1816 /// methods from existing assemblies we load them from GetParameters,
1817 /// and insert them into the cache
1819 static public Type [] GetArgumentTypes (MethodBase mb)
1821 object t = method_arguments [mb];
1825 ParameterInfo [] pi = mb.GetParameters ();
1832 types = new Type [c];
1833 for (int i = 0; i < c; i++)
1834 types [i] = pi [i].ParameterType;
1836 method_arguments.Add (mb, types);
1841 /// Returns the argument types for an indexer based on its PropertyInfo
1843 /// For dynamic indexers, we use the compiler provided types, for
1844 /// indexers from existing assemblies we load them from GetParameters,
1845 /// and insert them into the cache
1847 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1849 if (indexer_arguments.Contains (indexer))
1850 return (Type []) indexer_arguments [indexer];
1851 else if (indexer is PropertyBuilder)
1852 // If we're a PropertyBuilder and not in the
1853 // `indexer_arguments' hash, then we're a property and
1857 ParameterInfo [] pi = indexer.GetIndexParameters ();
1858 // Property, not an indexer.
1862 Type [] types = new Type [c];
1864 for (int i = 0; i < c; i++)
1865 types [i] = pi [i].ParameterType;
1867 indexer_arguments.Add (indexer, types);
1873 // This is a workaround the fact that GetValue is not
1874 // supported for dynamic types
1876 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1878 if (fields.Contains (fb))
1881 fields.Add (fb, value);
1886 static public object GetValue (FieldBuilder fb)
1891 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1893 if (fieldbuilders_to_fields.Contains (fb))
1896 fieldbuilders_to_fields.Add (fb, f);
1901 // The return value can be null; This will be the case for
1902 // auxiliary FieldBuilders created by the compiler that have no
1903 // real field being declared on the source code
1905 static public FieldBase GetField (FieldInfo fb)
1907 return (FieldBase) fieldbuilders_to_fields [fb];
1910 static Hashtable events;
1912 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1915 events = new Hashtable ();
1917 if (!events.Contains (eb)) {
1918 events.Add (eb, new Pair (add, remove));
1922 static public MethodInfo GetAddMethod (EventInfo ei)
1924 if (ei is MyEventBuilder) {
1925 Pair pair = (Pair) events [ei];
1927 return (MethodInfo) pair.First;
1929 return ei.GetAddMethod (true);
1932 static public MethodInfo GetRemoveMethod (EventInfo ei)
1934 if (ei is MyEventBuilder) {
1935 Pair pair = (Pair) events [ei];
1937 return (MethodInfo) pair.Second;
1939 return ei.GetRemoveMethod (true);
1942 static Hashtable priv_fields_events;
1944 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1946 if (priv_fields_events == null)
1947 priv_fields_events = new Hashtable ();
1949 if (priv_fields_events.Contains (einfo))
1952 priv_fields_events.Add (einfo, builder);
1957 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1959 if (priv_fields_events == null)
1962 return (MemberInfo) priv_fields_events [ei];
1965 static Hashtable properties;
1967 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1969 if (properties == null)
1970 properties = new Hashtable ();
1972 if (properties.Contains (pb))
1975 properties.Add (pb, new Pair (get, set));
1980 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1981 MethodBase set, Type[] args)
1983 if (!RegisterProperty (pb, get,set))
1986 indexer_arguments.Add (pb, args);
1991 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1993 Hashtable hash = new Hashtable ();
1994 return CheckStructCycles (tc, seen, hash);
1997 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
2000 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
2004 // `seen' contains all types we've already visited.
2006 if (seen.Contains (tc))
2008 seen.Add (tc, null);
2010 if (tc.Fields == null)
2013 foreach (FieldMember field in tc.Fields) {
2014 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
2017 Type ftype = field.FieldBuilder.FieldType;
2018 TypeContainer ftc = LookupTypeContainer (ftype);
2022 if (hash.Contains (ftc)) {
2023 Report.Error (523, tc.Location,
2024 "Struct member `{0}.{1}' of type `{2}' " +
2025 "causes a cycle in the struct layout",
2026 tc.Name, field.Name, ftc.Name);
2031 // `hash' contains all types in the current path.
2033 hash.Add (tc, null);
2035 bool ok = CheckStructCycles (ftc, seen, hash);
2042 if (!seen.Contains (ftc))
2043 seen.Add (ftc, null);
2050 /// Given an array of interface types, expand and eliminate repeated ocurrences
2051 /// of an interface.
2055 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2058 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
2060 ArrayList new_ifaces = new ArrayList ();
2062 foreach (TypeExpr iface in base_interfaces){
2063 Type itype = iface.ResolveType (ec);
2067 if (!new_ifaces.Contains (itype))
2068 new_ifaces.Add (itype);
2070 Type [] implementing = itype.GetInterfaces ();
2072 foreach (Type imp in implementing){
2073 if (!new_ifaces.Contains (imp))
2074 new_ifaces.Add (imp);
2077 Type [] ret = new Type [new_ifaces.Count];
2078 new_ifaces.CopyTo (ret, 0);
2082 static PtrHashtable iface_cache = new PtrHashtable ();
2085 /// This function returns the interfaces in the type `t'. Works with
2086 /// both types and TypeBuilders.
2088 public static Type [] GetInterfaces (Type t)
2091 Type [] cached = iface_cache [t] as Type [];
2096 // The reason for catching the Array case is that Reflection.Emit
2097 // will not return a TypeBuilder for Array types of TypeBuilder types,
2098 // but will still throw an exception if we try to call GetInterfaces
2101 // Since the array interfaces are always constant, we return those for
2106 t = TypeManager.array_type;
2108 if (t is TypeBuilder){
2109 Type [] base_ifaces;
2111 if (t.BaseType == null)
2112 base_ifaces = NoTypes;
2114 base_ifaces = GetInterfaces (t.BaseType);
2115 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
2116 if (type_ifaces == null)
2117 type_ifaces = NoTypes;
2119 int base_count = base_ifaces.Length;
2120 Type [] result = new Type [base_count + type_ifaces.Length];
2121 base_ifaces.CopyTo (result, 0);
2122 type_ifaces.CopyTo (result, base_count);
2124 iface_cache [t] = result;
2127 Type[] ifaces = t.GetInterfaces ();
2128 iface_cache [t] = ifaces;
2134 // gets the interfaces that are declared explicitly on t
2136 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2138 return (Type []) builder_to_ifaces [t];
2142 /// The following is used to check if a given type implements an interface.
2143 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2145 public static bool ImplementsInterface (Type t, Type iface)
2150 // FIXME OPTIMIZATION:
2151 // as soon as we hit a non-TypeBuiler in the interface
2152 // chain, we could return, as the `Type.GetInterfaces'
2153 // will return all the interfaces implement by the type
2157 interfaces = GetInterfaces (t);
2159 if (interfaces != null){
2160 foreach (Type i in interfaces){
2167 } while (t != null);
2172 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2174 // This is a custom version of Convert.ChangeType() which works
2175 // with the TypeBuilder defined types when compiling corlib.
2176 public static object ChangeType (object value, Type conversionType, out bool error)
2178 IConvertible convert_value = value as IConvertible;
2180 if (convert_value == null){
2186 // We must use Type.Equals() here since `conversionType' is
2187 // the TypeBuilder created version of a system type and not
2188 // the system type itself. You cannot use Type.GetTypeCode()
2189 // on such a type - it'd always return TypeCode.Object.
2193 if (conversionType.Equals (typeof (Boolean)))
2194 return (object)(convert_value.ToBoolean (nf_provider));
2195 else if (conversionType.Equals (typeof (Byte)))
2196 return (object)(convert_value.ToByte (nf_provider));
2197 else if (conversionType.Equals (typeof (Char)))
2198 return (object)(convert_value.ToChar (nf_provider));
2199 else if (conversionType.Equals (typeof (DateTime)))
2200 return (object)(convert_value.ToDateTime (nf_provider));
2201 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2202 return (object)(convert_value.ToDecimal (nf_provider));
2203 else if (conversionType.Equals (typeof (Double)))
2204 return (object)(convert_value.ToDouble (nf_provider));
2205 else if (conversionType.Equals (typeof (Int16)))
2206 return (object)(convert_value.ToInt16 (nf_provider));
2207 else if (conversionType.Equals (typeof (Int32)))
2208 return (object)(convert_value.ToInt32 (nf_provider));
2209 else if (conversionType.Equals (typeof (Int64)))
2210 return (object)(convert_value.ToInt64 (nf_provider));
2211 else if (conversionType.Equals (typeof (SByte)))
2212 return (object)(convert_value.ToSByte (nf_provider));
2213 else if (conversionType.Equals (typeof (Single)))
2214 return (object)(convert_value.ToSingle (nf_provider));
2215 else if (conversionType.Equals (typeof (String)))
2216 return (object)(convert_value.ToString (nf_provider));
2217 else if (conversionType.Equals (typeof (UInt16)))
2218 return (object)(convert_value.ToUInt16 (nf_provider));
2219 else if (conversionType.Equals (typeof (UInt32)))
2220 return (object)(convert_value.ToUInt32 (nf_provider));
2221 else if (conversionType.Equals (typeof (UInt64)))
2222 return (object)(convert_value.ToUInt64 (nf_provider));
2223 else if (conversionType.Equals (typeof (Object)))
2224 return (object)(value);
2234 // This is needed, because enumerations from assemblies
2235 // do not report their underlyingtype, but they report
2238 public static Type EnumToUnderlying (Type t)
2240 if (t == TypeManager.enum_type)
2243 t = t.UnderlyingSystemType;
2244 if (!TypeManager.IsEnumType (t))
2247 if (t is TypeBuilder) {
2248 // slow path needed to compile corlib
2249 if (t == TypeManager.bool_type ||
2250 t == TypeManager.byte_type ||
2251 t == TypeManager.sbyte_type ||
2252 t == TypeManager.char_type ||
2253 t == TypeManager.short_type ||
2254 t == TypeManager.ushort_type ||
2255 t == TypeManager.int32_type ||
2256 t == TypeManager.uint32_type ||
2257 t == TypeManager.int64_type ||
2258 t == TypeManager.uint64_type)
2260 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2262 TypeCode tc = Type.GetTypeCode (t);
2265 case TypeCode.Boolean:
2266 return TypeManager.bool_type;
2268 return TypeManager.byte_type;
2269 case TypeCode.SByte:
2270 return TypeManager.sbyte_type;
2272 return TypeManager.char_type;
2273 case TypeCode.Int16:
2274 return TypeManager.short_type;
2275 case TypeCode.UInt16:
2276 return TypeManager.ushort_type;
2277 case TypeCode.Int32:
2278 return TypeManager.int32_type;
2279 case TypeCode.UInt32:
2280 return TypeManager.uint32_type;
2281 case TypeCode.Int64:
2282 return TypeManager.int64_type;
2283 case TypeCode.UInt64:
2284 return TypeManager.uint64_type;
2286 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2290 // When compiling corlib and called with one of the core types, return
2291 // the corresponding typebuilder for that type.
2293 public static Type TypeToCoreType (Type t)
2295 if (RootContext.StdLib || (t is TypeBuilder))
2298 TypeCode tc = Type.GetTypeCode (t);
2301 case TypeCode.Boolean:
2302 return TypeManager.bool_type;
2304 return TypeManager.byte_type;
2305 case TypeCode.SByte:
2306 return TypeManager.sbyte_type;
2308 return TypeManager.char_type;
2309 case TypeCode.Int16:
2310 return TypeManager.short_type;
2311 case TypeCode.UInt16:
2312 return TypeManager.ushort_type;
2313 case TypeCode.Int32:
2314 return TypeManager.int32_type;
2315 case TypeCode.UInt32:
2316 return TypeManager.uint32_type;
2317 case TypeCode.Int64:
2318 return TypeManager.int64_type;
2319 case TypeCode.UInt64:
2320 return TypeManager.uint64_type;
2321 case TypeCode.Single:
2322 return TypeManager.float_type;
2323 case TypeCode.Double:
2324 return TypeManager.double_type;
2325 case TypeCode.String:
2326 return TypeManager.string_type;
2327 case TypeCode.Decimal:
2328 return TypeManager.decimal_type;
2330 if (t == typeof (void))
2331 return TypeManager.void_type;
2332 if (t == typeof (object))
2333 return TypeManager.object_type;
2334 if (t == typeof (System.Type))
2335 return TypeManager.type_type;
2336 if (t == typeof (System.IntPtr))
2337 return TypeManager.intptr_type;
2343 /// Utility function that can be used to probe whether a type
2344 /// is managed or not.
2346 public static bool VerifyUnManaged (Type t, Location loc)
2348 if (t.IsValueType || t.IsPointer){
2350 // FIXME: this is more complex, we actually need to
2351 // make sure that the type does not contain any
2357 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2358 // We need this explicit check here to make it work when
2359 // compiling corlib.
2364 "Cannot take the address or size of a variable of a managed type ('" +
2365 CSharpName (t) + "')");
2370 /// Returns the name of the indexer in a given type.
2373 /// The default is not always `Item'. The user can change this behaviour by
2374 /// using the IndexerNameAttribute in the container.
2375 /// For example, the String class indexer is named `Chars' not `Item'
2377 public static string IndexerPropertyName (Type t)
2379 if (t is TypeBuilder) {
2380 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2381 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2384 System.Attribute attr = System.Attribute.GetCustomAttribute (
2385 t, TypeManager.default_member_type);
2387 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2388 return dma.MemberName;
2391 return TypeContainer.DefaultIndexerName;
2394 static MethodInfo declare_local_method = null;
2396 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2398 if (declare_local_method == null){
2399 declare_local_method = typeof (ILGenerator).GetMethod (
2401 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2403 new Type [] { typeof (Type), typeof (bool)},
2405 if (declare_local_method == null){
2406 Report.Warning (-24, new Location (-1),
2407 "This version of the runtime does not support making pinned local variables. " +
2408 "This code may cause errors on a runtime with a moving GC");
2409 return ig.DeclareLocal (t);
2412 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2416 // Returns whether the array of memberinfos contains the given method
2418 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2420 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2422 foreach (MethodBase method in array) {
2423 if (method.Name != new_method.Name)
2426 if (method is MethodInfo && new_method is MethodInfo)
2427 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2431 Type [] old_args = TypeManager.GetArgumentTypes (method);
2432 int old_count = old_args.Length;
2435 if (new_args.Length != old_count)
2438 for (i = 0; i < old_count; i++){
2439 if (old_args [i] != new_args [i])
2452 // We copy methods from `new_members' into `target_list' if the signature
2453 // for the method from in the new list does not exist in the target_list
2455 // The name is assumed to be the same.
2457 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2459 if (target_list == null){
2460 target_list = new ArrayList ();
2462 foreach (MemberInfo mi in new_members){
2463 if (mi is MethodBase)
2464 target_list.Add (mi);
2469 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2470 target_list.CopyTo (target_array, 0);
2472 foreach (MemberInfo mi in new_members){
2473 MethodBase new_method = (MethodBase) mi;
2475 if (!ArrayContainsMethod (target_array, new_method))
2476 target_list.Add (new_method);
2482 #region MemberLookup implementation
2485 // Whether we allow private members in the result (since FindMembers
2486 // uses NonPublic for both protected and private), we need to distinguish.
2489 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2494 internal class Closure {
2495 internal bool private_ok;
2497 // Who is invoking us and which type is being queried currently.
2498 internal Type invocation_type;
2499 internal Type qualifier_type;
2501 // The assembly that defines the type is that is calling us
2502 internal Assembly invocation_assembly;
2503 internal IList almost_match;
2505 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2507 if (invocation_type == null)
2510 Debug.Assert (IsNestedFamilyAccessible (invocation_type, m.DeclaringType));
2515 // A nested class has access to all the protected members visible to its parent.
2516 if (qualifier_type != null
2517 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2520 if (invocation_type == m.DeclaringType
2521 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2522 // Although a derived class can access protected members of its base class
2523 // it cannot do so through an instance of the base class (CS1540).
2524 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2525 if (qualifier_type == null
2526 || qualifier_type == invocation_type
2527 || qualifier_type.IsSubclassOf (invocation_type))
2531 if (almost_match != null)
2532 almost_match.Add (m);
2537 // This filter filters by name + whether it is ok to include private
2538 // members in the search
2540 internal bool Filter (MemberInfo m, object filter_criteria)
2543 // Hack: we know that the filter criteria will always be in the `closure'
2547 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2550 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2551 (m.DeclaringType == invocation_type))
2555 // Ugly: we need to find out the type of `m', and depending
2556 // on this, tell whether we accept or not
2558 if (m is MethodBase){
2559 MethodBase mb = (MethodBase) m;
2560 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2562 if (ma == MethodAttributes.Private)
2563 return private_ok || (invocation_type == m.DeclaringType) ||
2564 IsNestedChildOf (invocation_type, m.DeclaringType);
2566 // Assembly succeeds if we're in the same assembly.
2567 if (ma == MethodAttributes.Assembly)
2568 return (invocation_assembly == mb.DeclaringType.Assembly);
2570 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2571 if (ma == MethodAttributes.FamANDAssem){
2572 if (invocation_assembly != mb.DeclaringType.Assembly)
2576 // Family and FamANDAssem require that we derive.
2577 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem))
2578 return CheckValidFamilyAccess (mb.IsStatic, m);
2584 if (m is FieldInfo){
2585 FieldInfo fi = (FieldInfo) m;
2586 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2588 if (fa == FieldAttributes.Private)
2589 return private_ok || (invocation_type == m.DeclaringType) ||
2590 IsNestedChildOf (invocation_type, m.DeclaringType);
2592 // Assembly succeeds if we're in the same assembly.
2593 if (fa == FieldAttributes.Assembly)
2594 return (invocation_assembly == fi.DeclaringType.Assembly);
2596 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2597 if (fa == FieldAttributes.FamANDAssem){
2598 if (invocation_assembly != fi.DeclaringType.Assembly)
2602 // Family and FamANDAssem require that we derive.
2603 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem))
2604 return CheckValidFamilyAccess (fi.IsStatic, m);
2611 // EventInfos and PropertyInfos, return true because they lack permission
2612 // information, so we need to check later on the methods.
2618 static Closure closure = new Closure ();
2619 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2622 // Looks up a member called `name' in the `queried_type'. This lookup
2623 // is done by code that is contained in the definition for `invocation_type'
2624 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2626 // `invocation_type' is used to check whether we're allowed to access the requested
2627 // member wrt its protection level.
2629 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2630 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2631 // is B and qualifier_type is A). This is used to do the CS1540 check.
2633 // When resolving a SimpleName, `qualifier_type' is null.
2635 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2636 // the same than `queried_type' - except when we're being called from BaseAccess;
2637 // in this case, `invocation_type' is the current type and `queried_type' the base
2638 // type, so this'd normally trigger a CS1540.
2640 // The binding flags are `bf' and the kind of members being looked up are `mt'
2642 // The return value always includes private members which code in `invocation_type'
2643 // is allowed to access (using the specified `qualifier_type' if given); only use
2644 // BindingFlags.NonPublic to bypass the permission check.
2646 // The 'almost_match' argument is used for reporting error CS1540.
2648 // Returns an array of a single element for everything but Methods/Constructors
2649 // that might return multiple matches.
2651 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2652 Type queried_type, MemberTypes mt,
2653 BindingFlags original_bf, string name, IList almost_match)
2655 Timer.StartTimer (TimerType.MemberLookup);
2657 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2658 queried_type, mt, original_bf, name, almost_match);
2660 Timer.StopTimer (TimerType.MemberLookup);
2665 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2666 Type queried_type, MemberTypes mt,
2667 BindingFlags original_bf, string name, IList almost_match)
2669 BindingFlags bf = original_bf;
2671 ArrayList method_list = null;
2672 Type current_type = queried_type;
2673 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2674 bool skip_iface_check = true, used_cache = false;
2675 bool always_ok_flag = false;
2677 closure.invocation_type = invocation_type;
2678 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2679 closure.qualifier_type = qualifier_type;
2680 closure.almost_match = almost_match;
2683 // If we are a nested class, we always have access to our container
2686 if (invocation_type != null){
2687 string invocation_name = invocation_type.FullName;
2688 if (invocation_name.IndexOf ('+') != -1){
2689 string container = queried_type.FullName + "+";
2690 int container_length = container.Length;
2692 if (invocation_name.Length > container_length){
2693 string shared = invocation_name.Substring (0, container_length);
2695 if (shared == container)
2696 always_ok_flag = true;
2701 // This is from the first time we find a method
2702 // in most cases, we do not actually find a method in the base class
2703 // so we can just ignore it, and save the arraylist allocation
2704 MemberInfo [] first_members_list = null;
2705 bool use_first_members_list = false;
2711 // `NonPublic' is lame, because it includes both protected and
2712 // private methods, so we need to control this behavior by
2713 // explicitly tracking if a private method is ok or not.
2715 // The possible cases are:
2716 // public, private and protected (internal does not come into the
2719 if ((invocation_type != null) &&
2720 ((invocation_type == current_type) ||
2721 IsNestedChildOf (invocation_type, current_type)) ||
2723 bf = original_bf | BindingFlags.NonPublic;
2727 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2729 Timer.StopTimer (TimerType.MemberLookup);
2731 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2733 Timer.StartTimer (TimerType.MemberLookup);
2736 // When queried for an interface type, the cache will automatically check all
2737 // inherited members, so we don't need to do this here. However, this only
2738 // works if we already used the cache in the first iteration of this loop.
2740 // If we used the cache in any further iteration, we can still terminate the
2741 // loop since the cache always looks in all base classes.
2747 skip_iface_check = false;
2749 if (current_type == TypeManager.object_type)
2752 current_type = current_type.BaseType;
2755 // This happens with interfaces, they have a null
2756 // basetype. Look members up in the Object class.
2758 if (current_type == null) {
2759 current_type = TypeManager.object_type;
2764 if (list.Length == 0)
2768 // Events and types are returned by both `static' and `instance'
2769 // searches, which means that our above FindMembers will
2770 // return two copies of the same.
2772 if (list.Length == 1 && !(list [0] is MethodBase)){
2777 // Multiple properties: we query those just to find out the indexer
2780 if (list [0] is PropertyInfo)
2784 // We found an event: the cache lookup returns both the event and
2785 // its private field.
2787 if (list [0] is EventInfo) {
2788 if ((list.Length == 2) && (list [1] is FieldInfo))
2789 return new MemberInfo [] { list [0] };
2796 // We found methods, turn the search into "method scan"
2800 if (first_members_list != null) {
2801 if (use_first_members_list) {
2802 method_list = CopyNewMethods (method_list, first_members_list);
2803 use_first_members_list = false;
2806 method_list = CopyNewMethods (method_list, list);
2808 first_members_list = list;
2809 use_first_members_list = true;
2810 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2812 } while (searching);
2814 if (use_first_members_list) {
2815 foreach (MemberInfo mi in first_members_list) {
2816 if (! (mi is MethodBase)) {
2817 method_list = CopyNewMethods (method_list, first_members_list);
2818 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2821 return (MemberInfo []) first_members_list;
2824 if (method_list != null && method_list.Count > 0)
2825 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2828 // This happens if we already used the cache in the first iteration, in this case
2829 // the cache already looked in all interfaces.
2831 if (skip_iface_check)
2835 // Interfaces do not list members they inherit, so we have to
2838 if (!queried_type.IsInterface)
2841 if (queried_type.IsArray)
2842 queried_type = TypeManager.array_type;
2844 Type [] ifaces = GetInterfaces (queried_type);
2848 foreach (Type itype in ifaces){
2851 x = MemberLookup (null, null, itype, mt, bf, name, null);
2859 // Tests whether external method is really special
2860 public static bool IsSpecialMethod (MethodBase mb)
2862 string name = mb.Name;
2863 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2864 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2866 if (name.StartsWith ("add_"))
2867 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2869 if (name.StartsWith ("remove_"))
2870 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2872 if (name.StartsWith ("op_")){
2873 foreach (string oname in Unary.oper_names) {
2878 foreach (string oname in Binary.oper_names) {
2891 /// There is exactly one instance of this class per type.
2893 public sealed class TypeHandle : IMemberContainer {
2894 public readonly TypeHandle BaseType;
2896 readonly int id = ++next_id;
2897 static int next_id = 0;
2899 static TypeHandle ()
2905 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2906 /// a TypeHandle yet, a new instance of it is created. This static method
2907 /// ensures that we'll only have one TypeHandle instance per type.
2909 private static TypeHandle GetTypeHandle (Type t)
2911 TypeHandle handle = (TypeHandle) type_hash [t];
2915 handle = new TypeHandle (t);
2916 type_hash.Add (t, handle);
2920 public static MemberCache GetMemberCache (Type t)
2922 return GetTypeHandle (t).MemberCache;
2925 public static void CleanUp ()
2930 public static void Reset ()
2932 type_hash = new PtrHashtable ();
2936 /// Returns the TypeHandle for TypeManager.object_type.
2938 public static IMemberContainer ObjectType {
2940 if (object_type != null)
2943 object_type = GetTypeHandle (TypeManager.object_type);
2950 /// Returns the TypeHandle for TypeManager.array_type.
2952 public static IMemberContainer ArrayType {
2954 if (array_type != null)
2957 array_type = GetTypeHandle (TypeManager.array_type);
2963 private static PtrHashtable type_hash;
2965 private static TypeHandle object_type = null;
2966 private static TypeHandle array_type = null;
2969 private bool is_interface;
2970 private MemberCache member_cache;
2971 private MemberCache base_cache;
2973 private TypeHandle (Type type)
2976 if (type.BaseType != null) {
2977 BaseType = GetTypeHandle (type.BaseType);
2978 base_cache = BaseType.MemberCache;
2979 } else if (type.IsInterface)
2980 base_cache = TypeManager.LookupBaseInterfacesCache (type);
2981 this.is_interface = type.IsInterface;
2982 this.member_cache = new MemberCache (this);
2985 // IMemberContainer methods
2987 public string Name {
2989 return type.FullName;
2999 public MemberCache BaseCache {
3005 public bool IsInterface {
3007 return is_interface;
3011 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3013 MemberInfo [] members;
3014 if (mt == MemberTypes.Event)
3015 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3017 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3019 Array.Reverse (members);
3021 return new MemberList (members);
3024 // IMemberFinder methods
3026 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3027 MemberFilter filter, object criteria)
3029 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3032 public MemberCache MemberCache {
3034 return member_cache;
3038 public override string ToString ()
3040 if (BaseType != null)
3041 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3043 return "TypeHandle (" + id + "," + Name + ")";