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)
13 using System.Globalization;
14 using System.Collections;
15 using System.Reflection;
16 using System.Reflection.Emit;
17 using System.Text.RegularExpressions;
18 using System.Runtime.CompilerServices;
19 using System.Diagnostics;
21 namespace Mono.CSharp {
23 public class TypeManager {
25 // A list of core types that the compiler requires or uses
27 static public Type object_type;
28 static public Type value_type;
29 static public Type string_type;
30 static public Type int32_type;
31 static public Type uint32_type;
32 static public Type int64_type;
33 static public Type uint64_type;
34 static public Type float_type;
35 static public Type double_type;
36 static public Type char_type;
37 static public Type char_ptr_type;
38 static public Type short_type;
39 static public Type decimal_type;
40 static public Type bool_type;
41 static public Type sbyte_type;
42 static public Type byte_type;
43 static public Type ushort_type;
44 static public Type enum_type;
45 static public Type delegate_type;
46 static public Type multicast_delegate_type;
47 static public Type void_type;
48 static public Type enumeration_type;
49 static public Type array_type;
50 static public Type runtime_handle_type;
51 static public Type icloneable_type;
52 static public Type type_type;
53 static public Type ienumerator_type;
54 static public Type idisposable_type;
55 static public Type default_member_type;
56 static public Type iasyncresult_type;
57 static public Type asynccallback_type;
58 static public Type intptr_type;
59 static public Type monitor_type;
60 static public Type runtime_field_handle_type;
61 static public Type attribute_type;
62 static public Type attribute_usage_type;
63 static public Type dllimport_type;
64 static public Type unverifiable_code_type;
65 static public Type methodimpl_attr_type;
66 static public Type marshal_as_attr_type;
67 static public Type param_array_type;
68 static public Type void_ptr_type;
69 static public Type indexer_name_type;
70 static public Type exception_type;
71 static public object obsolete_attribute_type;
72 static public object conditional_attribute_type;
75 // An empty array of types
77 static public Type [] NoTypes;
81 // Expressions representing the internal types. Used during declaration
84 static public Expression system_object_expr, system_string_expr;
85 static public Expression system_boolean_expr, system_decimal_expr;
86 static public Expression system_single_expr, system_double_expr;
87 static public Expression system_sbyte_expr, system_byte_expr;
88 static public Expression system_int16_expr, system_uint16_expr;
89 static public Expression system_int32_expr, system_uint32_expr;
90 static public Expression system_int64_expr, system_uint64_expr;
91 static public Expression system_char_expr, system_void_expr;
92 static public Expression system_asynccallback_expr;
93 static public Expression system_iasyncresult_expr;
96 // This is only used when compiling corlib
98 static public Type system_int32_type;
99 static public Type system_array_type;
100 static public Type system_type_type;
101 static public Type system_assemblybuilder_type;
102 static public MethodInfo system_int_array_get_length;
103 static public MethodInfo system_int_array_get_rank;
104 static public MethodInfo system_object_array_clone;
105 static public MethodInfo system_int_array_get_length_int;
106 static public MethodInfo system_int_array_get_lower_bound_int;
107 static public MethodInfo system_int_array_get_upper_bound_int;
108 static public MethodInfo system_void_array_copyto_array_int;
109 static public MethodInfo system_void_set_corlib_type_builders;
113 // Internal, not really used outside
115 static Type runtime_helpers_type;
118 // These methods are called by code generated by the compiler
120 static public MethodInfo string_concat_string_string;
121 static public MethodInfo string_concat_object_object;
122 static public MethodInfo string_isinterneted_string;
123 static public MethodInfo system_type_get_type_from_handle;
124 static public MethodInfo object_getcurrent_void;
125 static public MethodInfo bool_movenext_void;
126 static public MethodInfo void_dispose_void;
127 static public MethodInfo void_monitor_enter_object;
128 static public MethodInfo void_monitor_exit_object;
129 static public MethodInfo void_initializearray_array_fieldhandle;
130 static public MethodInfo int_getlength_int;
131 static public MethodInfo delegate_combine_delegate_delegate;
132 static public MethodInfo delegate_remove_delegate_delegate;
133 static public MethodInfo int_get_offset_to_string_data;
134 static public MethodInfo int_array_get_length;
135 static public MethodInfo int_array_get_rank;
136 static public MethodInfo object_array_clone;
137 static public MethodInfo int_array_get_length_int;
138 static public MethodInfo int_array_get_lower_bound_int;
139 static public MethodInfo int_array_get_upper_bound_int;
140 static public MethodInfo void_array_copyto_array_int;
143 // The attribute constructors.
145 static public ConstructorInfo cons_param_array_attribute;
146 static public ConstructorInfo void_decimal_ctor_five_args;
147 static public ConstructorInfo unverifiable_code_ctor;
150 // Holds the Array of Assemblies that have been loaded
151 // (either because it is the default or the user used the
152 // -r command line option)
154 static Assembly [] assemblies;
157 // Keeps a list of module builders. We used this to do lookups
158 // on the modulebuilder using GetType -- needed for arrays
160 static ModuleBuilder [] modules;
163 // This is the type_cache from the assemblies to avoid
164 // hitting System.Reflection on every lookup.
166 static Hashtable types;
169 // This is used to hotld the corresponding TypeContainer objects
170 // since we need this in FindMembers
172 static Hashtable typecontainers;
175 // Keeps track of those types that are defined by the
178 static ArrayList user_types;
180 static PtrHashtable builder_to_declspace;
183 // Tracks the interfaces implemented by typebuilders. We only
184 // enter those who do implement or or more interfaces
186 static PtrHashtable builder_to_ifaces;
189 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
190 // the arguments to the method
192 static Hashtable method_arguments;
195 // Maps PropertyBuilder to a Type array that contains
196 // the arguments to the indexer
198 static Hashtable indexer_arguments;
201 // Maybe `method_arguments' should be replaced and only
202 // method_internal_params should be kept?
204 static Hashtable method_internal_params;
207 // Keeps track of attribute types
210 static Hashtable builder_to_attr;
213 // Keeps track of methods
216 static Hashtable builder_to_method;
224 /// A filter for Findmembers that uses the Signature object to
227 static bool SignatureFilter (MemberInfo mi, object criteria)
229 Signature sig = (Signature) criteria;
231 if (!(mi is MethodBase))
234 if (mi.Name != sig.name)
237 int count = sig.args.Length;
239 if (mi is MethodBuilder || mi is ConstructorBuilder){
240 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
242 if (candidate_args.Length != count)
245 for (int i = 0; i < count; i++)
246 if (candidate_args [i] != sig.args [i])
251 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
253 if (pars.Length != count)
256 for (int i = 0; i < count; i++)
257 if (pars [i].ParameterType != sig.args [i])
263 // A delegate that points to the filter above.
264 static MemberFilter signature_filter;
267 // These are expressions that represent some of the internal data types, used
270 static void InitExpressionTypes ()
272 system_object_expr = new TypeLookupExpression ("System.Object");
273 system_string_expr = new TypeLookupExpression ("System.String");
274 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
275 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
276 system_single_expr = new TypeLookupExpression ("System.Single");
277 system_double_expr = new TypeLookupExpression ("System.Double");
278 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
279 system_byte_expr = new TypeLookupExpression ("System.Byte");
280 system_int16_expr = new TypeLookupExpression ("System.Int16");
281 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
282 system_int32_expr = new TypeLookupExpression ("System.Int32");
283 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
284 system_int64_expr = new TypeLookupExpression ("System.Int64");
285 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
286 system_char_expr = new TypeLookupExpression ("System.Char");
287 system_void_expr = new TypeLookupExpression ("System.Void");
288 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
289 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
292 static TypeManager ()
294 assemblies = new Assembly [0];
296 user_types = new ArrayList ();
298 types = new Hashtable ();
299 typecontainers = new Hashtable ();
301 builder_to_declspace = new PtrHashtable ();
302 builder_to_attr = new PtrHashtable ();
303 builder_to_method = new PtrHashtable ();
304 method_arguments = new PtrHashtable ();
305 method_internal_params = new PtrHashtable ();
306 indexer_arguments = new PtrHashtable ();
307 builder_to_ifaces = new PtrHashtable ();
309 NoTypes = new Type [0];
311 signature_filter = new MemberFilter (SignatureFilter);
312 InitExpressionTypes ();
315 public static void AddUserType (string name, TypeBuilder t, Type [] ifaces)
320 Type prev = (Type) types [name];
321 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
325 // This probably never happens, as we catch this before
327 Report.Error (-17, "The type `" + name + "' has already been defined.");
331 tc = builder_to_declspace [t] as TypeContainer;
334 1595, "The type `" + name + "' is defined in an existing assembly;"+
335 " Using the new definition from: " + tc.Location);
336 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
344 builder_to_ifaces [t] = ifaces;
348 // This entry point is used by types that we define under the covers
350 public static void RegisterBuilder (TypeBuilder tb, Type [] ifaces)
353 builder_to_ifaces [tb] = ifaces;
356 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, Type [] ifaces)
358 builder_to_declspace.Add (t, tc);
359 typecontainers.Add (name, tc);
360 AddUserType (name, t, ifaces);
363 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
366 builder_to_declspace.Add (t, del);
369 public static void AddEnumType (string name, TypeBuilder t, Enum en)
372 builder_to_declspace.Add (t, en);
375 public static void AddUserInterface (string name, TypeBuilder t, Interface i, Type [] ifaces)
377 AddUserType (name, t, ifaces);
378 builder_to_declspace.Add (t, i);
381 public static void AddMethod (MethodBuilder builder, MethodData method)
383 builder_to_method.Add (builder, method);
386 public static void RegisterAttrType (Type t, TypeContainer tc)
388 builder_to_attr.Add (t, tc);
392 /// Returns the TypeContainer whose Type is `t' or null if there is no
393 /// TypeContainer for `t' (ie, the Type comes from a library)
395 public static TypeContainer LookupTypeContainer (Type t)
397 return builder_to_declspace [t] as TypeContainer;
400 public static IMemberContainer LookupMemberContainer (Type t)
402 if (t is TypeBuilder) {
403 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
404 if (container != null)
408 return TypeHandle.GetTypeHandle (t);
411 public static Interface LookupInterface (Type t)
413 return builder_to_declspace [t] as Interface;
416 public static Delegate LookupDelegate (Type t)
418 return builder_to_declspace [t] as Delegate;
421 public static Enum LookupEnum (Type t)
423 return builder_to_declspace [t] as Enum;
426 public static TypeContainer LookupAttr (Type t)
428 return (TypeContainer) builder_to_attr [t];
432 /// Registers an assembly to load types from.
434 public static void AddAssembly (Assembly a)
436 int top = assemblies.Length;
437 Assembly [] n = new Assembly [top + 1];
439 assemblies.CopyTo (n, 0);
446 /// Registers a module builder to lookup types from
448 public static void AddModule (ModuleBuilder mb)
450 int top = modules != null ? modules.Length : 0;
451 ModuleBuilder [] n = new ModuleBuilder [top + 1];
454 modules.CopyTo (n, 0);
460 // Low-level lookup, cache-less
462 static Type LookupTypeReflection (string name)
466 foreach (Assembly a in assemblies){
467 t = a.GetType (name);
472 foreach (ModuleBuilder mb in modules) {
473 t = mb.GetType (name);
482 // This function is used when you want to avoid the lookups, and want to go
483 // directly to the source. This will use the cache.
485 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
486 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
487 // way to test things other than doing a fullname compare
489 public static Type LookupTypeDirect (string name)
491 Type t = (Type) types [name];
495 t = LookupTypeReflection (name);
504 /// Returns the Type associated with @name, takes care of the fact that
505 /// reflection expects nested types to be separated from the main type
506 /// with a "+" instead of a "."
508 public static Type LookupType (string name)
513 // First lookup in user defined and cached values
516 t = (Type) types [name];
521 // Optimization: ComposedCast will work with an existing type, and might already have the
522 // full name of the type, so the full system lookup can probably be avoided.
525 string [] elements = name.Split ('.');
526 int count = elements.Length;
528 for (int n = 1; n <= count; n++){
529 string top_level_type = String.Join (".", elements, 0, n);
531 t = (Type) types [top_level_type];
533 t = LookupTypeReflection (top_level_type);
543 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
544 t = LookupTypeDirect (newt);
553 // Returns a list of all namespaces in the assemblies and types loaded.
555 public static Hashtable GetNamespaces ()
557 Hashtable namespaces = new Hashtable ();
559 foreach (Assembly a in assemblies){
560 foreach (Type t in a.GetTypes ()){
561 string ns = t.Namespace;
563 if (namespaces.Contains (ns))
565 namespaces [ns] = ns;
569 foreach (ModuleBuilder mb in modules){
570 foreach (Type t in mb.GetTypes ()){
571 string ns = t.Namespace;
573 if (namespaces.Contains (ns))
575 namespaces [ns] = ns;
582 /// Returns the C# name of a type if possible, or the full type name otherwise
584 static public string CSharpName (Type t)
586 return Regex.Replace (t.FullName,
588 @"(Int32|UInt32|Int16|Uint16|Int64|UInt64|" +
589 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
590 @"Boolean|String|Void)" +
592 new MatchEvaluator (CSharpNameMatch));
595 static String CSharpNameMatch (Match match)
597 string s = match.Groups [1].Captures [0].Value;
599 Replace ("int32", "int").
600 Replace ("uint32", "uint").
601 Replace ("int16", "short").
602 Replace ("uint16", "ushort").
603 Replace ("int64", "long").
604 Replace ("uint64", "ulong").
605 Replace ("single", "float").
606 Replace ("boolean", "bool")
607 + match.Groups [2].Captures [0].Value;
611 /// Returns the signature of the method
613 static public string CSharpSignature (MethodBase mb)
618 // FIXME: We should really have a single function to do
619 // everything instead of the following 5 line pattern
621 ParameterData iparams = LookupParametersByBuilder (mb);
623 if (iparams == null){
624 ParameterInfo [] pi = mb.GetParameters ();
625 iparams = new ReflectionParameters (pi);
628 for (int i = 0; i < iparams.Count; i++) {
632 sig += iparams.ParameterDesc(i);
636 return mb.DeclaringType.Name + "." + mb.Name + sig;
640 /// Looks up a type, and aborts if it is not found. This is used
641 /// by types required by the compiler
643 static Type CoreLookupType (string name)
645 Type t = LookupType (name);
648 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
649 Environment.Exit (0);
656 /// Returns the MethodInfo for a method named `name' defined
657 /// in type `t' which takes arguments of types `args'
659 static MethodInfo GetMethod (Type t, string name, Type [] args)
667 list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public,
668 signature_filter, sig);
669 if (list.Count == 0) {
670 Report.Error (-19, "Can not find the core function `" + name + "'");
674 MethodInfo mi = list [0] as MethodInfo;
676 Report.Error (-19, "Can not find the core function `" + name + "'");
684 /// Returns the ConstructorInfo for "args"
686 static ConstructorInfo GetConstructor (Type t, Type [] args)
694 list = FindMembers (t, MemberTypes.Constructor,
695 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
696 signature_filter, sig);
697 if (list.Count == 0){
698 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
702 ConstructorInfo ci = list [0] as ConstructorInfo;
704 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
711 public static void InitEnumUnderlyingTypes ()
714 int32_type = CoreLookupType ("System.Int32");
715 int64_type = CoreLookupType ("System.Int64");
716 uint32_type = CoreLookupType ("System.UInt32");
717 uint64_type = CoreLookupType ("System.UInt64");
718 byte_type = CoreLookupType ("System.Byte");
719 sbyte_type = CoreLookupType ("System.SByte");
720 short_type = CoreLookupType ("System.Int16");
721 ushort_type = CoreLookupType ("System.UInt16");
725 /// The types have to be initialized after the initial
726 /// population of the type has happened (for example, to
727 /// bootstrap the corlib.dll
729 public static void InitCoreTypes ()
731 object_type = CoreLookupType ("System.Object");
732 value_type = CoreLookupType ("System.ValueType");
734 InitEnumUnderlyingTypes ();
736 char_type = CoreLookupType ("System.Char");
737 string_type = CoreLookupType ("System.String");
738 float_type = CoreLookupType ("System.Single");
739 double_type = CoreLookupType ("System.Double");
740 char_ptr_type = CoreLookupType ("System.Char*");
741 decimal_type = CoreLookupType ("System.Decimal");
742 bool_type = CoreLookupType ("System.Boolean");
743 enum_type = CoreLookupType ("System.Enum");
745 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
746 delegate_type = CoreLookupType ("System.Delegate");
748 array_type = CoreLookupType ("System.Array");
749 void_type = CoreLookupType ("System.Void");
750 type_type = CoreLookupType ("System.Type");
752 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
753 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
754 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
755 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
756 asynccallback_type = CoreLookupType ("System.AsyncCallback");
757 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
758 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
759 idisposable_type = CoreLookupType ("System.IDisposable");
760 icloneable_type = CoreLookupType ("System.ICloneable");
761 monitor_type = CoreLookupType ("System.Threading.Monitor");
762 intptr_type = CoreLookupType ("System.IntPtr");
764 attribute_type = CoreLookupType ("System.Attribute");
765 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
766 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
767 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
768 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
769 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
771 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
773 void_ptr_type = CoreLookupType ("System.Void*");
775 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
777 exception_type = CoreLookupType ("System.Exception");
782 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
783 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
786 // When compiling corlib, store the "real" types here.
788 if (!RootContext.StdLib) {
789 system_int32_type = typeof (System.Int32);
790 system_array_type = typeof (System.Array);
791 system_type_type = typeof (System.Type);
792 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
794 Type [] void_arg = { };
795 system_int_array_get_length = GetMethod (
796 system_array_type, "get_Length", void_arg);
797 system_int_array_get_rank = GetMethod (
798 system_array_type, "get_Rank", void_arg);
799 system_object_array_clone = GetMethod (
800 system_array_type, "Clone", void_arg);
802 Type [] system_int_arg = { system_int32_type };
803 system_int_array_get_length_int = GetMethod (
804 system_array_type, "GetLength", system_int_arg);
805 system_int_array_get_upper_bound_int = GetMethod (
806 system_array_type, "GetUpperBound", system_int_arg);
807 system_int_array_get_lower_bound_int = GetMethod (
808 system_array_type, "GetLowerBound", system_int_arg);
810 Type [] system_array_int_arg = { system_array_type, system_int32_type };
811 system_void_array_copyto_array_int = GetMethod (
812 system_array_type, "CopyTo", system_array_int_arg);
814 Type [] system_type_type_arg = { system_type_type, system_type_type, system_type_type };
817 system_void_set_corlib_type_builders = GetMethod (
818 system_assemblybuilder_type, "SetCorlibTypeBuilders",
819 system_type_type_arg);
821 object[] args = new object [3];
822 args [0] = object_type;
823 args [1] = value_type;
824 args [2] = enum_type;
826 system_void_set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
828 Console.WriteLine ("Corlib compilation is not supported in Microsoft.NET due to bugs in it");
834 // The helper methods that are used by the compiler
836 public static void InitCodeHelpers ()
839 // Now load the default methods that we use.
841 Type [] string_string = { string_type, string_type };
842 string_concat_string_string = GetMethod (
843 string_type, "Concat", string_string);
845 Type [] object_object = { object_type, object_type };
846 string_concat_object_object = GetMethod (
847 string_type, "Concat", object_object);
849 Type [] string_ = { string_type };
850 string_isinterneted_string = GetMethod (
851 string_type, "IsInterned", string_);
853 Type [] runtime_type_handle = { runtime_handle_type };
854 system_type_get_type_from_handle = GetMethod (
855 type_type, "GetTypeFromHandle", runtime_type_handle);
857 Type [] delegate_delegate = { delegate_type, delegate_type };
858 delegate_combine_delegate_delegate = GetMethod (
859 delegate_type, "Combine", delegate_delegate);
861 delegate_remove_delegate_delegate = GetMethod (
862 delegate_type, "Remove", delegate_delegate);
867 Type [] void_arg = { };
868 object_getcurrent_void = GetMethod (
869 ienumerator_type, "get_Current", void_arg);
870 bool_movenext_void = GetMethod (
871 ienumerator_type, "MoveNext", void_arg);
872 void_dispose_void = GetMethod (
873 idisposable_type, "Dispose", void_arg);
874 int_get_offset_to_string_data = GetMethod (
875 runtime_helpers_type, "get_OffsetToStringData", void_arg);
876 int_array_get_length = GetMethod (
877 array_type, "get_Length", void_arg);
878 int_array_get_rank = GetMethod (
879 array_type, "get_Rank", void_arg);
884 Type [] int_arg = { int32_type };
885 int_array_get_length_int = GetMethod (
886 array_type, "GetLength", int_arg);
887 int_array_get_upper_bound_int = GetMethod (
888 array_type, "GetUpperBound", int_arg);
889 int_array_get_lower_bound_int = GetMethod (
890 array_type, "GetLowerBound", int_arg);
893 // System.Array methods
895 object_array_clone = GetMethod (
896 array_type, "Clone", void_arg);
897 Type [] array_int_arg = { array_type, int32_type };
898 void_array_copyto_array_int = GetMethod (
899 array_type, "CopyTo", array_int_arg);
904 Type [] object_arg = { object_type };
905 void_monitor_enter_object = GetMethod (
906 monitor_type, "Enter", object_arg);
907 void_monitor_exit_object = GetMethod (
908 monitor_type, "Exit", object_arg);
910 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
912 void_initializearray_array_fieldhandle = GetMethod (
913 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
918 int_getlength_int = GetMethod (
919 array_type, "GetLength", int_arg);
922 // Decimal constructors
924 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
925 void_decimal_ctor_five_args = GetConstructor (
926 decimal_type, dec_arg);
931 cons_param_array_attribute = GetConstructor (
932 param_array_type, void_arg);
934 unverifiable_code_ctor = GetConstructor (
935 unverifiable_code_type, void_arg);
939 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
941 static Hashtable type_hash = new Hashtable ();
944 /// This is the "old", non-cache based FindMembers() function. We cannot use
945 /// the cache here because there is no member name argument.
947 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
948 MemberFilter filter, object criteria)
950 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
953 // `builder_to_declspace' contains all dynamic types.
957 Timer.StartTimer (TimerType.FindMembers);
958 list = decl.FindMembers (mt, bf, filter, criteria);
959 Timer.StopTimer (TimerType.FindMembers);
964 // We have to take care of arrays specially, because GetType on
965 // a TypeBuilder array will return a Type, not a TypeBuilder,
966 // and we can not call FindMembers on this type.
968 if (t.IsSubclassOf (TypeManager.array_type))
969 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
972 // Since FindMembers will not lookup both static and instance
973 // members, we emulate this behaviour here.
975 if ((bf & instance_and_static) == instance_and_static){
976 MemberInfo [] i_members = t.FindMembers (
977 mt, bf & ~BindingFlags.Static, filter, criteria);
979 int i_len = i_members.Length;
981 MemberInfo one = i_members [0];
984 // If any of these are present, we are done!
986 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
987 return new MemberList (i_members);
990 MemberInfo [] s_members = t.FindMembers (
991 mt, bf & ~BindingFlags.Instance, filter, criteria);
993 int s_len = s_members.Length;
994 if (i_len > 0 || s_len > 0)
995 return new MemberList (i_members, s_members);
998 return new MemberList (i_members);
1000 return new MemberList (s_members);
1004 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1009 /// This method is only called from within MemberLookup. It tries to use the member
1010 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1011 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1012 /// our return value will already contain all inherited members and the caller don't need
1013 /// to check base classes and interfaces anymore.
1015 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1016 string name, out bool used_cache)
1019 // We have to take care of arrays specially, because GetType on
1020 // a TypeBuilder array will return a Type, not a TypeBuilder,
1021 // and we can not call FindMembers on this type.
1023 if (t.IsSubclassOf (TypeManager.array_type)) {
1025 return TypeHandle.ArrayType.MemberCache.FindMembers (
1026 mt, bf, name, FilterWithClosure_delegate, null);
1030 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1031 // and we can ask the DeclSpace for the MemberCache.
1033 if (t is TypeBuilder) {
1034 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1035 MemberCache cache = decl.MemberCache;
1038 // If this DeclSpace has a MemberCache, use it.
1041 if (cache != null) {
1043 return cache.FindMembers (
1044 mt, bf, name, FilterWithClosure_delegate, null);
1047 // If there is no MemberCache, we need to use the "normal" FindMembers.
1050 Timer.StartTimer (TimerType.FindMembers);
1051 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1052 FilterWithClosure_delegate, name);
1053 Timer.StopTimer (TimerType.FindMembers);
1059 // This call will always succeed. There is exactly one TypeHandle instance per
1060 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1061 // if it didn't already exist.
1063 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1066 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1069 public static bool IsBuiltinType (Type t)
1071 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1072 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1073 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1074 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1080 public static bool IsDelegateType (Type t)
1082 if (t.IsSubclassOf (TypeManager.delegate_type))
1088 public static bool IsEnumType (Type t)
1090 if (t.IsSubclassOf (TypeManager.enum_type))
1097 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1099 Hashtable managed_types;
1100 public static bool IsUnmanagedType (Type t)
1102 if (IsBuiltinType (t) && t != TypeManager.string_type)
1111 if (IsValueType (t)){
1112 if (t is TypeBuilder){
1113 TypeContainer tc = LookupTypeContainer (t);
1115 foreach (Field f in tc.Fields){
1116 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1120 FieldInfo [] fields = t.GetFields ();
1122 foreach (FieldInfo f in fields)
1123 if (!IsUnmanagedType (f.FieldType))
1132 public static bool IsValueType (Type t)
1134 if (t.IsSubclassOf (TypeManager.value_type))
1140 public static bool IsInterfaceType (Type t)
1142 Interface iface = builder_to_declspace [t] as Interface;
1151 // Checks whether `type' is a subclass or nested child of `parent'.
1153 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1156 if ((type == parent) || type.IsSubclassOf (parent))
1159 // Handle nested types.
1160 type = type.DeclaringType;
1161 } while (type != null);
1167 // Checks whether `type' is a nested child of `parent'.
1169 public static bool IsNestedChildOf (Type type, Type parent)
1171 if ((type == parent) || type.IsSubclassOf (parent))
1174 return IsSubclassOrNestedChildOf (type, parent);
1178 /// Returns the User Defined Types
1180 public static ArrayList UserTypes {
1186 public static Hashtable TypeContainers {
1188 return typecontainers;
1192 static Hashtable builder_to_constant;
1194 public static void RegisterConstant (FieldBuilder fb, Const c)
1196 if (builder_to_constant == null)
1197 builder_to_constant = new PtrHashtable ();
1199 if (builder_to_constant.Contains (fb))
1202 builder_to_constant.Add (fb, c);
1205 public static Const LookupConstant (FieldBuilder fb)
1207 if (builder_to_constant == null)
1210 return (Const) builder_to_constant [fb];
1214 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1218 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1219 /// for anything which is dynamic, and we need this in a number of places,
1220 /// we register this information here, and use it afterwards.
1222 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1227 method_arguments.Add (mb, args);
1228 method_internal_params.Add (mb, ip);
1233 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1235 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1238 if (method_internal_params.Contains (mb))
1239 return (InternalParameters) method_internal_params [mb];
1241 throw new Exception ("Argument for Method not registered" + mb);
1245 /// Returns the argument types for a method based on its methodbase
1247 /// For dynamic methods, we use the compiler provided types, for
1248 /// methods from existing assemblies we load them from GetParameters,
1249 /// and insert them into the cache
1251 static public Type [] GetArgumentTypes (MethodBase mb)
1253 if (method_arguments.Contains (mb))
1254 return (Type []) method_arguments [mb];
1256 ParameterInfo [] pi = mb.GetParameters ();
1258 Type [] types = new Type [c];
1260 for (int i = 0; i < c; i++)
1261 types [i] = pi [i].ParameterType;
1263 method_arguments.Add (mb, types);
1269 /// Returns the argument types for an indexer based on its PropertyInfo
1271 /// For dynamic indexers, we use the compiler provided types, for
1272 /// indexers from existing assemblies we load them from GetParameters,
1273 /// and insert them into the cache
1275 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1277 if (indexer_arguments.Contains (indexer))
1278 return (Type []) indexer_arguments [indexer];
1279 else if (indexer is PropertyBuilder)
1280 // If we're a PropertyBuilder and not in the
1281 // `indexer_arguments' hash, then we're a property and
1285 ParameterInfo [] pi = indexer.GetIndexParameters ();
1286 // Property, not an indexer.
1290 Type [] types = new Type [c];
1292 for (int i = 0; i < c; i++)
1293 types [i] = pi [i].ParameterType;
1295 indexer_arguments.Add (indexer, types);
1301 // This is a workaround the fact that GetValue is not
1302 // supported for dynamic types
1304 static Hashtable fields = new Hashtable ();
1305 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1307 if (fields.Contains (fb))
1310 fields.Add (fb, value);
1315 static public object GetValue (FieldBuilder fb)
1320 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1321 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1323 if (fieldbuilders_to_fields.Contains (fb))
1326 fieldbuilders_to_fields.Add (fb, f);
1330 static public FieldBase GetField (FieldInfo fb)
1332 return (FieldBase) fieldbuilders_to_fields [fb];
1335 static Hashtable events;
1337 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1340 events = new Hashtable ();
1342 if (events.Contains (eb))
1345 events.Add (eb, new Pair (add, remove));
1350 static public MethodInfo GetAddMethod (EventInfo ei)
1352 if (ei is MyEventBuilder) {
1353 Pair pair = (Pair) events [ei];
1355 return (MethodInfo) pair.First;
1357 return ei.GetAddMethod ();
1360 static public MethodInfo GetRemoveMethod (EventInfo ei)
1362 if (ei is MyEventBuilder) {
1363 Pair pair = (Pair) events [ei];
1365 return (MethodInfo) pair.Second;
1367 return ei.GetAddMethod ();
1370 static Hashtable priv_fields_events;
1372 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1374 if (priv_fields_events == null)
1375 priv_fields_events = new Hashtable ();
1377 if (priv_fields_events.Contains (einfo))
1380 priv_fields_events.Add (einfo, builder);
1385 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1387 return (MemberInfo) priv_fields_events [ei];
1390 static Hashtable properties;
1392 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1394 if (properties == null)
1395 properties = new Hashtable ();
1397 if (properties.Contains (pb))
1400 properties.Add (pb, new Pair (get, set));
1405 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get, MethodBase set, Type[] args)
1407 if (!RegisterProperty (pb, get,set))
1410 indexer_arguments.Add (pb, args);
1416 // FIXME: we need to return the accessors depending on whether
1417 // they are visible or not.
1419 static public MethodInfo [] GetAccessors (PropertyInfo pi)
1423 if (pi is PropertyBuilder){
1424 Pair pair = (Pair) properties [pi];
1426 ret = new MethodInfo [2];
1427 ret [0] = (MethodInfo) pair.First;
1428 ret [1] = (MethodInfo) pair.Second;
1432 MethodInfo [] mi = new MethodInfo [2];
1435 // Why this and not pi.GetAccessors?
1436 // Because sometimes index 0 is the getter
1437 // sometimes it is 1
1439 mi [0] = pi.GetGetMethod (true);
1440 mi [1] = pi.GetSetMethod (true);
1446 static public MethodInfo GetPropertyGetter (PropertyInfo pi)
1448 if (pi is PropertyBuilder){
1449 Pair de = (Pair) properties [pi];
1451 return (MethodInfo) de.Second;
1453 return pi.GetSetMethod ();
1456 static public MethodInfo GetPropertySetter (PropertyInfo pi)
1458 if (pi is PropertyBuilder){
1459 Pair de = (Pair) properties [pi];
1461 return (MethodInfo) de.First;
1463 return pi.GetGetMethod ();
1467 /// Given an array of interface types, expand and eliminate repeated ocurrences
1468 /// of an interface.
1472 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1475 public static Type [] ExpandInterfaces (Type [] base_interfaces)
1477 ArrayList new_ifaces = new ArrayList ();
1479 foreach (Type iface in base_interfaces){
1480 if (!new_ifaces.Contains (iface))
1481 new_ifaces.Add (iface);
1483 Type [] implementing = TypeManager.GetInterfaces (iface);
1485 foreach (Type imp in implementing){
1486 if (!new_ifaces.Contains (imp))
1487 new_ifaces.Add (imp);
1490 Type [] ret = new Type [new_ifaces.Count];
1491 new_ifaces.CopyTo (ret, 0);
1496 /// This function returns the interfaces in the type `t'. Works with
1497 /// both types and TypeBuilders.
1499 public static Type [] GetInterfaces (Type t)
1502 // The reason for catching the Array case is that Reflection.Emit
1503 // will not return a TypeBuilder for Array types of TypeBuilder types,
1504 // but will still throw an exception if we try to call GetInterfaces
1507 // Since the array interfaces are always constant, we return those for
1512 t = TypeManager.array_type;
1514 if (t is TypeBuilder){
1515 Type [] parent_ifaces;
1517 if (t.BaseType == null)
1518 parent_ifaces = NoTypes;
1520 parent_ifaces = GetInterfaces (t.BaseType);
1521 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
1522 if (type_ifaces == null)
1523 type_ifaces = NoTypes;
1525 int parent_count = parent_ifaces.Length;
1526 Type [] result = new Type [parent_count + type_ifaces.Length];
1527 parent_ifaces.CopyTo (result, 0);
1528 type_ifaces.CopyTo (result, parent_count);
1532 return t.GetInterfaces ();
1536 /// The following is used to check if a given type implements an interface.
1537 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1539 public static bool ImplementsInterface (Type t, Type iface)
1544 // FIXME OPTIMIZATION:
1545 // as soon as we hit a non-TypeBuiler in the interface
1546 // chain, we could return, as the `Type.GetInterfaces'
1547 // will return all the interfaces implement by the type
1551 interfaces = GetInterfaces (t);
1553 if (interfaces != null){
1554 foreach (Type i in interfaces){
1561 } while (t != null);
1566 // This is a custom version of Convert.ChangeType() which works
1567 // with the TypeBuilder defined types when compiling corlib.
1568 public static object ChangeType (object value, Type conversionType)
1570 if (!(value is IConvertible))
1571 throw new ArgumentException ();
1573 IConvertible convertValue = (IConvertible) value;
1574 CultureInfo ci = CultureInfo.CurrentCulture;
1575 NumberFormatInfo provider = ci.NumberFormat;
1578 // We must use Type.Equals() here since `conversionType' is
1579 // the TypeBuilder created version of a system type and not
1580 // the system type itself. You cannot use Type.GetTypeCode()
1581 // on such a type - it'd always return TypeCode.Object.
1583 if (conversionType.Equals (typeof (Boolean)))
1584 return (object)(convertValue.ToBoolean (provider));
1585 else if (conversionType.Equals (typeof (Byte)))
1586 return (object)(convertValue.ToByte (provider));
1587 else if (conversionType.Equals (typeof (Char)))
1588 return (object)(convertValue.ToChar (provider));
1589 else if (conversionType.Equals (typeof (DateTime)))
1590 return (object)(convertValue.ToDateTime (provider));
1591 else if (conversionType.Equals (typeof (Decimal)))
1592 return (object)(convertValue.ToDecimal (provider));
1593 else if (conversionType.Equals (typeof (Double)))
1594 return (object)(convertValue.ToDouble (provider));
1595 else if (conversionType.Equals (typeof (Int16)))
1596 return (object)(convertValue.ToInt16 (provider));
1597 else if (conversionType.Equals (typeof (Int32)))
1598 return (object)(convertValue.ToInt32 (provider));
1599 else if (conversionType.Equals (typeof (Int64)))
1600 return (object)(convertValue.ToInt64 (provider));
1601 else if (conversionType.Equals (typeof (SByte)))
1602 return (object)(convertValue.ToSByte (provider));
1603 else if (conversionType.Equals (typeof (Single)))
1604 return (object)(convertValue.ToSingle (provider));
1605 else if (conversionType.Equals (typeof (String)))
1606 return (object)(convertValue.ToString (provider));
1607 else if (conversionType.Equals (typeof (UInt16)))
1608 return (object)(convertValue.ToUInt16 (provider));
1609 else if (conversionType.Equals (typeof (UInt32)))
1610 return (object)(convertValue.ToUInt32 (provider));
1611 else if (conversionType.Equals (typeof (UInt64)))
1612 return (object)(convertValue.ToUInt64 (provider));
1613 else if (conversionType.Equals (typeof (Object)))
1614 return (object)(value);
1616 throw new InvalidCastException ();
1620 // This is needed, because enumerations from assemblies
1621 // do not report their underlyingtype, but they report
1624 public static Type EnumToUnderlying (Type t)
1626 if (t == TypeManager.enum_type)
1629 t = t.UnderlyingSystemType;
1630 if (!TypeManager.IsEnumType (t))
1633 if (t is TypeBuilder) {
1634 // slow path needed to compile corlib
1635 if (t == TypeManager.bool_type ||
1636 t == TypeManager.byte_type ||
1637 t == TypeManager.sbyte_type ||
1638 t == TypeManager.char_type ||
1639 t == TypeManager.short_type ||
1640 t == TypeManager.ushort_type ||
1641 t == TypeManager.int32_type ||
1642 t == TypeManager.uint32_type ||
1643 t == TypeManager.int64_type ||
1644 t == TypeManager.uint64_type)
1646 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1648 TypeCode tc = Type.GetTypeCode (t);
1651 case TypeCode.Boolean:
1652 return TypeManager.bool_type;
1654 return TypeManager.byte_type;
1655 case TypeCode.SByte:
1656 return TypeManager.sbyte_type;
1658 return TypeManager.char_type;
1659 case TypeCode.Int16:
1660 return TypeManager.short_type;
1661 case TypeCode.UInt16:
1662 return TypeManager.ushort_type;
1663 case TypeCode.Int32:
1664 return TypeManager.int32_type;
1665 case TypeCode.UInt32:
1666 return TypeManager.uint32_type;
1667 case TypeCode.Int64:
1668 return TypeManager.int64_type;
1669 case TypeCode.UInt64:
1670 return TypeManager.uint64_type;
1672 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1676 // When compiling corlib and called with one of the core types, return
1677 // the corresponding typebuilder for that type.
1679 public static Type TypeToCoreType (Type t)
1681 if (RootContext.StdLib || (t is TypeBuilder))
1684 TypeCode tc = Type.GetTypeCode (t);
1687 case TypeCode.Boolean:
1688 return TypeManager.bool_type;
1690 return TypeManager.byte_type;
1691 case TypeCode.SByte:
1692 return TypeManager.sbyte_type;
1694 return TypeManager.char_type;
1695 case TypeCode.Int16:
1696 return TypeManager.short_type;
1697 case TypeCode.UInt16:
1698 return TypeManager.ushort_type;
1699 case TypeCode.Int32:
1700 return TypeManager.int32_type;
1701 case TypeCode.UInt32:
1702 return TypeManager.uint32_type;
1703 case TypeCode.Int64:
1704 return TypeManager.int64_type;
1705 case TypeCode.UInt64:
1706 return TypeManager.uint64_type;
1707 case TypeCode.String:
1708 return TypeManager.string_type;
1710 if (t == typeof (void))
1711 return TypeManager.void_type;
1712 if (t == typeof (object))
1713 return TypeManager.object_type;
1714 if (t == typeof (System.Type))
1715 return TypeManager.type_type;
1721 /// Utility function that can be used to probe whether a type
1722 /// is managed or not.
1724 public static bool VerifyUnManaged (Type t, Location loc)
1726 if (t.IsValueType || t.IsPointer){
1728 // FIXME: this is more complex, we actually need to
1729 // make sure that the type does not contain any
1735 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
1736 // We need this explicit check here to make it work when
1737 // compiling corlib.
1742 "Cannot take the address or size of a variable of a managed type ('" +
1743 CSharpName (t) + "')");
1748 /// Returns the name of the indexer in a given type.
1751 /// The default is not always `Item'. The user can change this behaviour by
1752 /// using the DefaultMemberAttribute in the class.
1754 /// For example, the String class indexer is named `Chars' not `Item'
1756 public static string IndexerPropertyName (Type t)
1758 if (t is TypeBuilder) {
1759 if (t.IsInterface) {
1760 Interface i = LookupInterface (t);
1762 if ((i == null) || (i.IndexerName == null))
1765 return i.IndexerName;
1767 TypeContainer tc = LookupTypeContainer (t);
1769 if ((tc == null) || (tc.IndexerName == null))
1772 return tc.IndexerName;
1776 System.Attribute attr = System.Attribute.GetCustomAttribute (
1777 t, TypeManager.default_member_type);
1779 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
1780 return dma.MemberName;
1786 public static void MakePinned (LocalBuilder builder)
1789 // FIXME: Flag the "LocalBuilder" type as being
1790 // pinned. Figure out API.
1796 // Returns whether the array of memberinfos contains the given method
1798 static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
1800 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
1802 foreach (MethodBase method in array){
1803 if (method.Name != new_method.Name)
1806 Type [] old_args = TypeManager.GetArgumentTypes (method);
1807 int old_count = old_args.Length;
1810 if (new_args.Length != old_count)
1813 for (i = 0; i < old_count; i++){
1814 if (old_args [i] != new_args [i])
1826 // We copy methods from `new_members' into `target_list' if the signature
1827 // for the method from in the new list does not exist in the target_list
1829 // The name is assumed to be the same.
1831 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
1833 if (target_list == null){
1834 target_list = new ArrayList ();
1836 foreach (MemberInfo mi in new_members){
1837 if (mi is MethodBase)
1838 target_list.Add (mi);
1843 MemberInfo [] target_array = new MemberInfo [target_list.Count];
1844 target_list.CopyTo (target_array, 0);
1846 foreach (MemberInfo mi in new_members){
1847 MethodBase new_method = (MethodBase) mi;
1849 if (!ArrayContainsMethod (target_array, new_method))
1850 target_list.Add (new_method);
1856 public enum MethodFlags {
1858 IsObsoleteError = 2,
1863 // Returns the TypeManager.MethodFlags for this method.
1864 // This emits an error 619 / warning 618 if the method is obsolete.
1865 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
1867 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
1869 MethodFlags flags = 0;
1871 if (mb.DeclaringType is TypeBuilder){
1872 MethodData method = (MethodData) builder_to_method [mb];
1873 if (method == null) {
1874 // FIXME: implement Obsolete attribute on Property,
1875 // Indexer and Event.
1879 return method.GetMethodFlags (loc);
1882 object [] attrs = mb.GetCustomAttributes (true);
1883 foreach (object ta in attrs){
1884 if (!(ta is System.Attribute)){
1885 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
1888 System.Attribute a = (System.Attribute) ta;
1889 if (a.TypeId == TypeManager.obsolete_attribute_type){
1890 ObsoleteAttribute oa = (ObsoleteAttribute) a;
1892 string method_desc = TypeManager.CSharpSignature (mb);
1895 Report.Error (619, loc, "Method `" + method_desc +
1896 "' is obsolete: `" + oa.Message + "'");
1897 return MethodFlags.IsObsoleteError;
1899 Report.Warning (618, loc, "Method `" + method_desc +
1900 "' is obsolete: `" + oa.Message + "'");
1902 flags |= MethodFlags.IsObsolete;
1908 // Skip over conditional code.
1910 if (a.TypeId == TypeManager.conditional_attribute_type){
1911 ConditionalAttribute ca = (ConditionalAttribute) a;
1913 if (RootContext.AllDefines [ca.ConditionString] == null)
1914 flags |= MethodFlags.ShouldIgnore;
1921 #region MemberLookup implementation
1924 // Name of the member
1926 static string closure_name;
1929 // Whether we allow private members in the result (since FindMembers
1930 // uses NonPublic for both protected and private), we need to distinguish.
1932 static bool closure_private_ok;
1935 // Who is invoking us and which type is being queried currently.
1937 static Type closure_invocation_type;
1938 static Type closure_queried_type;
1939 static Type closure_start_type;
1942 // The assembly that defines the type is that is calling us
1944 static Assembly closure_invocation_assembly;
1947 // This filter filters by name + whether it is ok to include private
1948 // members in the search
1950 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
1953 // Hack: we know that the filter criteria will always be in the `closure'
1957 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
1960 if ((closure_start_type == closure_invocation_type) &&
1961 (m.DeclaringType == closure_invocation_type))
1965 // Ugly: we need to find out the type of `m', and depending
1966 // on this, tell whether we accept or not
1968 if (m is MethodBase){
1969 MethodBase mb = (MethodBase) m;
1970 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
1972 if (ma == MethodAttributes.Private)
1973 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
1976 // FamAndAssem requires that we not only derivate, but we are on the
1979 if (ma == MethodAttributes.FamANDAssem){
1980 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
1984 // Assembly and FamORAssem succeed if we're in the same assembly.
1985 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
1986 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
1990 // We already know that we aren't in the same assembly.
1991 if (ma == MethodAttributes.Assembly)
1994 // Family and FamANDAssem require that we derive.
1995 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
1996 if (closure_invocation_type == null)
1999 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2002 // Although a derived class can access protected members of its base class
2003 // it cannot do so through an instance of the base class (CS1540).
2004 if ((closure_invocation_type != closure_start_type) &&
2005 closure_invocation_type.IsSubclassOf (closure_start_type))
2015 if (m is FieldInfo){
2016 FieldInfo fi = (FieldInfo) m;
2017 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2019 if (fa == FieldAttributes.Private)
2020 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
2023 // FamAndAssem requires that we not only derivate, but we are on the
2026 if (fa == FieldAttributes.FamANDAssem){
2027 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2031 // Assembly and FamORAssem succeed if we're in the same assembly.
2032 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2033 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2037 // We already know that we aren't in the same assembly.
2038 if (fa == FieldAttributes.Assembly)
2041 // Family and FamANDAssem require that we derive.
2042 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2043 if (closure_invocation_type == null)
2046 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2049 // Although a derived class can access protected members of its base class
2050 // it cannot do so through an instance of the base class (CS1540).
2051 if ((closure_invocation_type != closure_start_type) &&
2052 closure_invocation_type.IsSubclassOf (closure_start_type))
2063 // EventInfos and PropertyInfos, return true
2068 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2071 // Looks up a member called `name' in the `queried_type'. This lookup
2072 // is done by code that is contained in the definition for `invocation_type'.
2074 // The binding flags are `bf' and the kind of members being looked up are `mt'
2076 // Returns an array of a single element for everything but Methods/Constructors
2077 // that might return multiple matches.
2079 public static MemberInfo [] MemberLookup (Type invocation_type, Type queried_type,
2080 MemberTypes mt, BindingFlags original_bf, string name)
2082 Timer.StartTimer (TimerType.MemberLookup);
2084 MemberInfo[] retval = RealMemberLookup (invocation_type, queried_type,
2085 mt, original_bf, name);
2087 Timer.StopTimer (TimerType.MemberLookup);
2092 static MemberInfo [] RealMemberLookup (Type invocation_type, Type queried_type,
2093 MemberTypes mt, BindingFlags original_bf, string name)
2095 BindingFlags bf = original_bf;
2097 ArrayList method_list = null;
2098 Type current_type = queried_type;
2099 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2101 bool always_ok_flag = false;
2102 bool skip_iface_check = true, used_cache = false;
2104 closure_name = name;
2105 closure_invocation_type = invocation_type;
2106 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2107 closure_start_type = queried_type;
2110 // If we are a nested class, we always have access to our container
2113 if (invocation_type != null){
2114 string invocation_name = invocation_type.FullName;
2115 if (invocation_name.IndexOf ('+') != -1){
2116 string container = queried_type.FullName + "+";
2117 int container_length = container.Length;
2119 if (invocation_name.Length > container_length){
2120 string shared = invocation_name.Substring (0, container_length);
2122 if (shared == container)
2123 always_ok_flag = true;
2132 // `NonPublic' is lame, because it includes both protected and
2133 // private methods, so we need to control this behavior by
2134 // explicitly tracking if a private method is ok or not.
2136 // The possible cases are:
2137 // public, private and protected (internal does not come into the
2140 if (invocation_type != null){
2141 if (invocation_type == current_type){
2142 private_ok = (bf & BindingFlags.NonPublic) != 0;
2144 private_ok = always_ok_flag;
2146 if (private_ok || invocation_type.IsSubclassOf (current_type))
2147 bf = original_bf | BindingFlags.NonPublic;
2150 bf = original_bf & ~BindingFlags.NonPublic;
2153 closure_private_ok = private_ok;
2154 closure_queried_type = current_type;
2156 Timer.StopTimer (TimerType.MemberLookup);
2158 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2160 Timer.StartTimer (TimerType.MemberLookup);
2163 // When queried for an interface type, the cache will automatically check all
2164 // inherited members, so we don't need to do this here. However, this only
2165 // works if we already used the cache in the first iteration of this loop.
2167 // If we used the cache in any further iteration, we can still terminate the
2168 // loop since the cache always looks in all parent classes.
2174 skip_iface_check = false;
2176 if (current_type == TypeManager.object_type)
2179 current_type = current_type.BaseType;
2182 // This happens with interfaces, they have a null
2183 // basetype. Look members up in the Object class.
2185 if (current_type == null)
2186 current_type = TypeManager.object_type;
2189 if (list.Count == 0)
2193 // Events and types are returned by both `static' and `instance'
2194 // searches, which means that our above FindMembers will
2195 // return two copies of the same.
2197 if (list.Count == 1 && !(list [0] is MethodBase)){
2198 return (MemberInfo []) list;
2202 // Multiple properties: we query those just to find out the indexer
2205 if (list [0] is PropertyInfo)
2206 return (MemberInfo []) list;
2209 // We found methods, turn the search into "method scan"
2213 method_list = CopyNewMethods (method_list, list);
2214 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2215 } while (searching);
2217 if (method_list != null && method_list.Count > 0)
2218 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2221 // This happens if we already used the cache in the first iteration, in this case
2222 // the cache already looked in all interfaces.
2224 if (skip_iface_check)
2228 // Interfaces do not list members they inherit, so we have to
2231 if (!queried_type.IsInterface)
2234 if (queried_type.IsArray)
2235 queried_type = TypeManager.array_type;
2237 Type [] ifaces = GetInterfaces (queried_type);
2241 foreach (Type itype in ifaces){
2244 x = MemberLookup (null, itype, mt, bf, name);
2256 /// There is exactly one instance of this class per type.
2258 public sealed class TypeHandle : IMemberContainer {
2259 public readonly TypeHandle BaseType;
2261 readonly int id = ++next_id;
2262 static int next_id = 0;
2265 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2266 /// a TypeHandle yet, a new instance of it is created. This static method
2267 /// ensures that we'll only have one TypeHandle instance per type.
2269 public static TypeHandle GetTypeHandle (Type t)
2271 TypeHandle handle = (TypeHandle) type_hash [t];
2275 handle = new TypeHandle (t);
2276 type_hash.Add (t, handle);
2281 /// Returns the TypeHandle for TypeManager.object_type.
2283 public static IMemberContainer ObjectType {
2285 if (object_type != null)
2288 object_type = GetTypeHandle (TypeManager.object_type);
2295 /// Returns the TypeHandle for TypeManager.array_type.
2297 public static IMemberContainer ArrayType {
2299 if (array_type != null)
2302 array_type = GetTypeHandle (TypeManager.array_type);
2308 private static PtrHashtable type_hash = new PtrHashtable ();
2310 private static TypeHandle object_type = null;
2311 private static TypeHandle array_type = null;
2314 private bool is_interface;
2315 private MemberCache member_cache;
2317 private TypeHandle (Type type)
2320 if (type.BaseType != null)
2321 BaseType = GetTypeHandle (type.BaseType);
2322 else if ((type != TypeManager.object_type) && (type != typeof (object)))
2323 is_interface = true;
2324 this.member_cache = new MemberCache (this);
2327 // IMemberContainer methods
2329 public string Name {
2331 return type.FullName;
2341 public IMemberContainer Parent {
2347 public bool IsInterface {
2349 return is_interface;
2353 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2355 if (mt == MemberTypes.Event)
2356 return new MemberList (type.GetEvents (bf | BindingFlags.DeclaredOnly));
2358 return new MemberList (type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2362 // IMemberFinder methods
2364 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2365 MemberFilter filter, object criteria)
2367 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2370 public MemberCache MemberCache {
2372 return member_cache;
2376 public override string ToString ()
2378 if (BaseType != null)
2379 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2381 return "TypeHandle (" + id + "," + Name + ")";