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 enumeration_type;
59 static public Type array_type;
60 static public Type runtime_handle_type;
61 static public Type icloneable_type;
62 static public Type type_type;
63 static public Type ienumerator_type;
64 static public Type ienumerable_type;
65 static public Type idisposable_type;
66 static public Type iconvertible_type;
67 static public Type default_member_type;
68 static public Type iasyncresult_type;
69 static public Type asynccallback_type;
70 static public Type intptr_type;
71 static public Type monitor_type;
72 static public Type runtime_field_handle_type;
73 static public Type runtime_argument_handle_type;
74 static public Type attribute_type;
75 static public Type attribute_usage_type;
76 static public Type dllimport_type;
77 static public Type unverifiable_code_type;
78 static public Type methodimpl_attr_type;
79 static public Type marshal_as_attr_type;
80 static public Type param_array_type;
81 static public Type guid_attr_type;
82 static public Type void_ptr_type;
83 static public Type indexer_name_type;
84 static public Type exception_type;
85 static public Type invalid_operation_exception_type;
86 static public Type not_supported_exception_type;
87 static public Type obsolete_attribute_type;
88 static public Type conditional_attribute_type;
89 static public Type in_attribute_type;
90 static public Type anonymous_method_type;
91 static public Type cls_compliant_attribute_type;
92 static public Type typed_reference_type;
93 static public Type arg_iterator_type;
94 static public Type mbr_type;
95 static public Type struct_layout_attribute_type;
96 static public Type field_offset_attribute_type;
97 static public Type security_attr_type;
98 static public Type code_access_permission_type;
101 // An empty array of types
103 static public Type [] NoTypes;
104 static public TypeExpr [] NoTypeExprs;
108 // Expressions representing the internal types. Used during declaration
111 static public TypeExpr system_object_expr, system_string_expr;
112 static public TypeExpr system_boolean_expr, system_decimal_expr;
113 static public TypeExpr system_single_expr, system_double_expr;
114 static public TypeExpr system_sbyte_expr, system_byte_expr;
115 static public TypeExpr system_int16_expr, system_uint16_expr;
116 static public TypeExpr system_int32_expr, system_uint32_expr;
117 static public TypeExpr system_int64_expr, system_uint64_expr;
118 static public TypeExpr system_char_expr, system_void_expr;
119 static public TypeExpr system_asynccallback_expr;
120 static public TypeExpr system_iasyncresult_expr;
121 static public TypeExpr system_valuetype_expr;
122 static public TypeExpr system_intptr_expr;
125 // This is only used when compiling corlib
127 static public Type system_int32_type;
128 static public Type system_array_type;
129 static public Type system_type_type;
130 static public Type system_assemblybuilder_type;
131 static public MethodInfo system_int_array_get_length;
132 static public MethodInfo system_int_array_get_rank;
133 static public MethodInfo system_object_array_clone;
134 static public MethodInfo system_int_array_get_length_int;
135 static public MethodInfo system_int_array_get_lower_bound_int;
136 static public MethodInfo system_int_array_get_upper_bound_int;
137 static public MethodInfo system_void_array_copyto_array_int;
141 // Internal, not really used outside
143 static Type runtime_helpers_type;
146 // These methods are called by code generated by the compiler
148 static public MethodInfo string_concat_string_string;
149 static public MethodInfo string_concat_string_string_string;
150 static public MethodInfo string_concat_string_string_string_string;
151 static public MethodInfo string_concat_string_dot_dot_dot;
152 static public MethodInfo string_concat_object_object;
153 static public MethodInfo string_concat_object_object_object;
154 static public MethodInfo string_concat_object_dot_dot_dot;
155 static public MethodInfo string_isinterneted_string;
156 static public MethodInfo system_type_get_type_from_handle;
157 static public MethodInfo object_getcurrent_void;
158 static public MethodInfo bool_movenext_void;
159 static public MethodInfo ienumerable_getenumerator_void;
160 static public MethodInfo void_reset_void;
161 static public MethodInfo void_dispose_void;
162 static public MethodInfo void_monitor_enter_object;
163 static public MethodInfo void_monitor_exit_object;
164 static public MethodInfo void_initializearray_array_fieldhandle;
165 static public MethodInfo int_getlength_int;
166 static public MethodInfo delegate_combine_delegate_delegate;
167 static public MethodInfo delegate_remove_delegate_delegate;
168 static public MethodInfo int_get_offset_to_string_data;
169 static public MethodInfo int_array_get_length;
170 static public MethodInfo int_array_get_rank;
171 static public MethodInfo object_array_clone;
172 static public MethodInfo int_array_get_length_int;
173 static public MethodInfo int_array_get_lower_bound_int;
174 static public MethodInfo int_array_get_upper_bound_int;
175 static public MethodInfo void_array_copyto_array_int;
178 // The attribute constructors.
180 static public ConstructorInfo object_ctor;
181 static public ConstructorInfo cons_param_array_attribute;
182 static public ConstructorInfo void_decimal_ctor_five_args;
183 static public ConstructorInfo unverifiable_code_ctor;
184 static public ConstructorInfo invalid_operation_ctor;
185 static public ConstructorInfo default_member_ctor;
188 // Holds the Array of Assemblies that have been loaded
189 // (either because it is the default or the user used the
190 // -r command line option)
192 static Assembly [] assemblies;
195 // Keeps a list of modules. We used this to do lookups
196 // on the module using GetType -- needed for arrays
198 static Module [] modules;
201 // This is the type_cache from the assemblies to avoid
202 // hitting System.Reflection on every lookup.
204 static Hashtable types;
207 // This is used to hotld the corresponding TypeContainer objects
208 // since we need this in FindMembers
210 static Hashtable typecontainers;
213 // Keeps track of those types that are defined by the
216 static ArrayList user_types;
218 static PtrHashtable builder_to_declspace;
221 // Tracks the interfaces implemented by typebuilders. We only
222 // enter those who do implement or or more interfaces
224 static PtrHashtable builder_to_ifaces;
227 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
228 // the arguments to the method
230 static Hashtable method_arguments;
233 // Maps PropertyBuilder to a Type array that contains
234 // the arguments to the indexer
236 static Hashtable indexer_arguments;
239 // Maybe `method_arguments' should be replaced and only
240 // method_internal_params should be kept?
242 static Hashtable method_internal_params;
245 // Keeps track of methods
248 static Hashtable builder_to_method;
251 // Contains all public types from referenced assemblies.
252 // This member is used only if CLS Compliance verification is required.
254 public static Hashtable all_imported_types;
261 public static void CleanUp ()
263 // Lets get everything clean so that we can collect before generating code
267 typecontainers = null;
269 builder_to_declspace = null;
270 builder_to_ifaces = null;
271 method_arguments = null;
272 indexer_arguments = null;
273 method_internal_params = null;
274 builder_to_method = null;
278 negative_hits = null;
279 builder_to_constant = null;
280 fieldbuilders_to_fields = null;
282 priv_fields_events = null;
285 TypeHandle.CleanUp ();
289 /// A filter for Findmembers that uses the Signature object to
292 static bool SignatureFilter (MemberInfo mi, object criteria)
294 Signature sig = (Signature) criteria;
296 if (!(mi is MethodBase))
299 if (mi.Name != sig.name)
302 int count = sig.args.Length;
304 if (mi is MethodBuilder || mi is ConstructorBuilder){
305 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
307 if (candidate_args.Length != count)
310 for (int i = 0; i < count; i++)
311 if (candidate_args [i] != sig.args [i])
316 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
318 if (pars.Length != count)
321 for (int i = 0; i < count; i++)
322 if (pars [i].ParameterType != sig.args [i])
328 // A delegate that points to the filter above.
329 static MemberFilter signature_filter;
332 // These are expressions that represent some of the internal data types, used
335 static void InitExpressionTypes ()
337 system_object_expr = new TypeLookupExpression ("System.Object");
338 system_string_expr = new TypeLookupExpression ("System.String");
339 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
340 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
341 system_single_expr = new TypeLookupExpression ("System.Single");
342 system_double_expr = new TypeLookupExpression ("System.Double");
343 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
344 system_byte_expr = new TypeLookupExpression ("System.Byte");
345 system_int16_expr = new TypeLookupExpression ("System.Int16");
346 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
347 system_int32_expr = new TypeLookupExpression ("System.Int32");
348 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
349 system_int64_expr = new TypeLookupExpression ("System.Int64");
350 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
351 system_char_expr = new TypeLookupExpression ("System.Char");
352 system_void_expr = new TypeLookupExpression ("System.Void");
353 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
354 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
355 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
356 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
359 static TypeManager ()
361 assemblies = new Assembly [0];
363 user_types = new ArrayList ();
365 types = new Hashtable ();
366 typecontainers = new Hashtable ();
368 builder_to_declspace = new PtrHashtable ();
369 builder_to_method = new PtrHashtable ();
370 method_arguments = new PtrHashtable ();
371 method_internal_params = new PtrHashtable ();
372 indexer_arguments = new PtrHashtable ();
373 builder_to_ifaces = new PtrHashtable ();
375 NoTypes = new Type [0];
376 NoTypeExprs = new TypeExpr [0];
378 signature_filter = new MemberFilter (SignatureFilter);
379 InitExpressionTypes ();
382 public static void HandleDuplicate (string name, Type t)
384 Type prev = (Type) types [name];
385 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
389 // This probably never happens, as we catch this before
391 Report.Error (-17, "The type `" + name + "' has already been defined.");
395 tc = builder_to_declspace [t] as TypeContainer;
398 1595, "The type `" + name + "' is defined in an existing assembly;"+
399 " Using the new definition from: " + tc.Location);
402 1595, "The type `" + name + "' is defined in an existing assembly;");
405 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
411 public static void AddUserType (string name, TypeBuilder t, TypeExpr[] ifaces)
416 HandleDuplicate (name, t);
421 builder_to_ifaces [t] = ifaces;
425 // This entry point is used by types that we define under the covers
427 public static void RegisterBuilder (TypeBuilder tb, TypeExpr [] ifaces)
430 builder_to_ifaces [tb] = ifaces;
433 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, TypeExpr [] ifaces)
435 builder_to_declspace.Add (t, tc);
436 typecontainers.Add (name, tc);
437 AddUserType (name, t, ifaces);
440 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
445 HandleDuplicate (name, t);
448 builder_to_declspace.Add (t, del);
451 public static void AddEnumType (string name, TypeBuilder t, Enum en)
456 HandleDuplicate (name, t);
458 builder_to_declspace.Add (t, en);
461 public static void AddUserInterface (string name, TypeBuilder t, Interface i, TypeExpr [] ifaces)
463 AddUserType (name, t, ifaces);
464 builder_to_declspace.Add (t, i);
468 public static void AddMethod (MethodBase builder, IMethodData method)
470 builder_to_method.Add (builder, method);
473 public static IMethodData GetMethod (MethodBase builder)
475 return (IMethodData) builder_to_method [builder];
479 /// Returns the DeclSpace whose Type is `t' or null if there is no
480 /// DeclSpace for `t' (ie, the Type comes from a library)
482 public static DeclSpace LookupDeclSpace (Type t)
484 return builder_to_declspace [t] as DeclSpace;
488 /// Returns the TypeContainer whose Type is `t' or null if there is no
489 /// TypeContainer for `t' (ie, the Type comes from a library)
491 public static TypeContainer LookupTypeContainer (Type t)
493 return builder_to_declspace [t] as TypeContainer;
497 /// Fills member container from base interfaces
499 public static IMemberContainer LookupInterfaceContainer (Type[] types)
504 IMemberContainer complete = null;
505 foreach (Type t in types) {
506 IMemberContainer one_type_cont = null;
507 if (t is TypeBuilder) {
508 one_type_cont = builder_to_declspace [t] as IMemberContainer;
510 one_type_cont = TypeHandle.GetTypeHandle (t);
512 if (complete == null) {
513 complete = one_type_cont;
517 // We need to avoid including same member more than once
518 foreach (DictionaryEntry de in one_type_cont.MemberCache.Members) {
519 object o = complete.MemberCache.Members [de.Key];
521 complete.MemberCache.Members.Add (de.Key, de.Value);
525 ArrayList al_old = (ArrayList)o;
526 ArrayList al_new = (ArrayList)de.Value;
528 foreach (MemberCache.CacheEntry ce in al_new) {
530 foreach (MemberCache.CacheEntry ce_old in al_old) {
531 if (ce.Member == ce_old.Member) {
544 public static IMemberContainer LookupMemberContainer (Type t)
546 if (t is TypeBuilder) {
547 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
548 if (container != null)
552 return TypeHandle.GetTypeHandle (t);
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 {
623 static Hashtable references = new Hashtable ();
626 // Gets the reference to T version of the Type (T&)
628 public static Type GetReferenceType (Type t)
630 string tname = t.FullName + "&";
632 Type ret = t.Assembly.GetType (tname);
635 // If the type comes from the assembly we are building
636 // We need the Hashtable, because .NET 1.1 will return different instance types
637 // every time we call ModuleBuilder.GetType.
640 if (references [t] == null)
641 references [t] = CodeGen.Module.Builder.GetType (tname);
642 ret = (Type) references [t];
648 static Hashtable pointers = new Hashtable ();
651 // Gets the pointer to T version of the Type (T*)
653 public static Type GetPointerType (Type t)
655 string tname = t.FullName + "*";
657 Type ret = t.Assembly.GetType (tname);
660 // If the type comes from the assembly we are building
661 // We need the Hashtable, because .NET 1.1 will return different instance types
662 // every time we call ModuleBuilder.GetType.
665 if (pointers [t] == null)
666 pointers [t] = CodeGen.Module.Builder.GetType (tname);
668 ret = (Type) pointers [t];
675 // Low-level lookup, cache-less
677 static Type LookupTypeReflection (string name)
681 foreach (Assembly a in assemblies){
682 t = a.GetType (name);
687 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
688 if (ta == TypeAttributes.NotPublic ||
689 ta == TypeAttributes.NestedPrivate ||
690 ta == TypeAttributes.NestedAssembly ||
691 ta == TypeAttributes.NestedFamANDAssem){
694 // In .NET pointers turn out to be private, even if their
695 // element type is not
698 t = t.GetElementType ();
708 foreach (Module mb in modules) {
709 t = mb.GetType (name);
717 static Hashtable negative_hits = new Hashtable ();
720 // This function is used when you want to avoid the lookups, and want to go
721 // directly to the source. This will use the cache.
723 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
724 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
725 // way to test things other than doing a fullname compare
727 public static Type LookupTypeDirect (string name)
729 Type t = (Type) types [name];
733 if (negative_hits.Contains (name))
736 t = LookupTypeReflection (name);
739 negative_hits [name] = null;
746 static readonly char [] dot_array = { '.' };
749 /// Returns the Type associated with @name, takes care of the fact that
750 /// reflection expects nested types to be separated from the main type
751 /// with a "+" instead of a "."
753 public static Type LookupType (string name)
758 // First lookup in user defined and cached values
761 t = (Type) types [name];
765 // Two thirds of the failures are caught here.
766 if (negative_hits.Contains (name))
769 // Sadly, split takes a param array, so this ends up allocating *EVERY TIME*
770 string [] elements = name.Split (dot_array);
771 int count = elements.Length;
773 for (int n = 1; n <= count; n++){
774 string top_level_type = String.Join (".", elements, 0, n);
776 // One third of the failures are caught here.
777 if (negative_hits.Contains (top_level_type))
780 t = (Type) types [top_level_type];
782 t = LookupTypeReflection (top_level_type);
784 negative_hits [top_level_type] = null;
795 // We know that System.Object does not have children, and since its the parent of
796 // all the objects, it always gets probbed for inner classes.
798 if (top_level_type == "System.Object")
801 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
802 //Console.WriteLine ("Looking up: " + newt + " " + name);
803 t = LookupTypeReflection (newt);
805 negative_hits [name] = null;
810 negative_hits [name] = null;
815 /// Computes the namespaces that we import from the assemblies we reference.
817 public static void ComputeNamespaces ()
819 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
822 // First add the assembly namespaces
824 if (assembly_get_namespaces != null){
825 int count = assemblies.Length;
827 for (int i = 0; i < count; i++){
828 Assembly a = assemblies [i];
829 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
830 foreach (string ns in namespaces){
833 Namespace.LookupNamespace (ns, true);
837 Hashtable cache = new Hashtable ();
838 cache.Add ("", null);
839 foreach (Assembly a in assemblies) {
840 foreach (Type t in a.GetExportedTypes ()) {
841 string ns = t.Namespace;
842 if (ns == null || cache.Contains (ns))
845 Namespace.LookupNamespace (ns, true);
846 cache.Add (ns, null);
853 /// Fills static table with exported types from all referenced assemblies.
854 /// This information is required for CLS Compliance tests.
856 public static void LoadAllImportedTypes ()
858 all_imported_types = new Hashtable ();
859 foreach (Assembly a in assemblies) {
860 foreach (Type t in a.GetExportedTypes ()) {
861 all_imported_types [t.FullName] = t;
866 public static bool NamespaceClash (string name, Location loc)
868 if (Namespace.LookupNamespace (name, false) == null)
871 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
876 /// Returns the C# name of a type if possible, or the full type name otherwise
878 static public string CSharpName (Type t)
880 return Regex.Replace (t.FullName,
882 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
883 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
884 @"Boolean|String|Void|Null)" +
886 new MatchEvaluator (CSharpNameMatch));
889 static String CSharpNameMatch (Match match)
891 string s = match.Groups [1].Captures [0].Value;
893 Replace ("int32", "int").
894 Replace ("uint32", "uint").
895 Replace ("int16", "short").
896 Replace ("uint16", "ushort").
897 Replace ("int64", "long").
898 Replace ("uint64", "ulong").
899 Replace ("single", "float").
900 Replace ("boolean", "bool")
901 + match.Groups [2].Captures [0].Value;
905 /// Returns the signature of the method with full namespace classification
907 static public string GetFullNameSignature (MemberInfo mi)
909 return mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
912 static public string GetFullNameSignature (MethodBase mb)
914 string name = mb.Name;
916 name = mb.DeclaringType.Name;
918 if (mb.IsSpecialName) {
919 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
920 name = name.Remove (0, 4);
927 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
931 /// Returns the signature of the property and indexer
933 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
936 return GetFullNameSignature (pb);
939 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
940 string signature = GetFullNameSignature (mb);
941 string arg = TypeManager.LookupParametersByBuilder (mb).ParameterDesc (0);
942 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
946 /// Returns the signature of the method
948 static public string CSharpSignature (MethodBase mb)
950 StringBuilder sig = new StringBuilder ("(");
953 // FIXME: We should really have a single function to do
954 // everything instead of the following 5 line pattern
956 ParameterData iparams = LookupParametersByBuilder (mb);
959 iparams = new ReflectionParameters (mb);
962 if (mb.IsSpecialName && iparams.Count == 0 && !mb.IsConstructor)
963 return GetFullNameSignature (mb);
965 for (int i = 0; i < iparams.Count; i++) {
969 sig.Append (iparams.ParameterDesc (i));
974 if (mb.IsSpecialName && iparams.Count == 1 && !mb.IsConstructor) {
975 sig.Replace ('(', '[');
976 sig.Replace (')', ']');
979 return GetFullNameSignature (mb) + sig.ToString ();
983 /// Looks up a type, and aborts if it is not found. This is used
984 /// by types required by the compiler
986 static Type CoreLookupType (string name)
988 Type t = LookupTypeDirect (name);
991 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
992 Environment.Exit (1);
999 /// Returns the MethodInfo for a method named `name' defined
1000 /// in type `t' which takes arguments of types `args'
1002 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
1006 BindingFlags flags = instance_and_static | BindingFlags.Public;
1012 flags |= BindingFlags.NonPublic;
1014 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
1015 if (list.Count == 0) {
1017 Report.Error (-19, "Can not find the core function `" + name + "'");
1021 MethodInfo mi = list [0] as MethodInfo;
1024 Report.Error (-19, "Can not find the core function `" + name + "'");
1031 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
1033 return GetMethod (t, name, args, false, report_errors);
1036 static MethodInfo GetMethod (Type t, string name, Type [] args)
1038 return GetMethod (t, name, args, true);
1043 /// Returns the ConstructorInfo for "args"
1045 static ConstructorInfo GetConstructor (Type t, Type [] args)
1053 list = FindMembers (t, MemberTypes.Constructor,
1054 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1055 signature_filter, sig);
1056 if (list.Count == 0){
1057 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1061 ConstructorInfo ci = list [0] as ConstructorInfo;
1063 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1070 public static void InitEnumUnderlyingTypes ()
1073 int32_type = CoreLookupType ("System.Int32");
1074 int64_type = CoreLookupType ("System.Int64");
1075 uint32_type = CoreLookupType ("System.UInt32");
1076 uint64_type = CoreLookupType ("System.UInt64");
1077 byte_type = CoreLookupType ("System.Byte");
1078 sbyte_type = CoreLookupType ("System.SByte");
1079 short_type = CoreLookupType ("System.Int16");
1080 ushort_type = CoreLookupType ("System.UInt16");
1084 /// The types have to be initialized after the initial
1085 /// population of the type has happened (for example, to
1086 /// bootstrap the corlib.dll
1088 public static void InitCoreTypes ()
1090 object_type = CoreLookupType ("System.Object");
1091 value_type = CoreLookupType ("System.ValueType");
1093 InitEnumUnderlyingTypes ();
1095 char_type = CoreLookupType ("System.Char");
1096 string_type = CoreLookupType ("System.String");
1097 float_type = CoreLookupType ("System.Single");
1098 double_type = CoreLookupType ("System.Double");
1099 char_ptr_type = CoreLookupType ("System.Char*");
1100 decimal_type = CoreLookupType ("System.Decimal");
1101 bool_type = CoreLookupType ("System.Boolean");
1102 enum_type = CoreLookupType ("System.Enum");
1104 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1105 delegate_type = CoreLookupType ("System.Delegate");
1107 array_type = CoreLookupType ("System.Array");
1108 void_type = CoreLookupType ("System.Void");
1109 type_type = CoreLookupType ("System.Type");
1111 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1112 runtime_argument_handle_type = CoreLookupType ("System.RuntimeArgumentHandle");
1113 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1114 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1115 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1116 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1117 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1118 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1119 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1120 idisposable_type = CoreLookupType ("System.IDisposable");
1121 icloneable_type = CoreLookupType ("System.ICloneable");
1122 iconvertible_type = CoreLookupType ("System.IConvertible");
1123 monitor_type = CoreLookupType ("System.Threading.Monitor");
1124 intptr_type = CoreLookupType ("System.IntPtr");
1126 attribute_type = CoreLookupType ("System.Attribute");
1127 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1128 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1129 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1130 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1131 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1132 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1133 typed_reference_type = CoreLookupType ("System.TypedReference");
1134 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1135 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1138 // Sigh. Remove this before the release. Wonder what versions of Mono
1139 // people are running.
1141 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1143 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1145 void_ptr_type = CoreLookupType ("System.Void*");
1147 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1149 exception_type = CoreLookupType ("System.Exception");
1150 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1151 not_supported_exception_type = CoreLookupType ("System.NotSupportedException");
1156 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1157 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1158 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1159 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1160 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1161 security_attr_type = CoreLookupType ("System.Security.Permissions.SecurityAttribute");
1162 code_access_permission_type = CoreLookupType ("System.Security.CodeAccessPermission");
1165 // When compiling corlib, store the "real" types here.
1167 if (!RootContext.StdLib) {
1168 system_int32_type = typeof (System.Int32);
1169 system_array_type = typeof (System.Array);
1170 system_type_type = typeof (System.Type);
1171 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1173 Type [] void_arg = { };
1174 system_int_array_get_length = GetMethod (
1175 system_array_type, "get_Length", void_arg);
1176 system_int_array_get_rank = GetMethod (
1177 system_array_type, "get_Rank", void_arg);
1178 system_object_array_clone = GetMethod (
1179 system_array_type, "Clone", void_arg);
1181 Type [] system_int_arg = { system_int32_type };
1182 system_int_array_get_length_int = GetMethod (
1183 system_array_type, "GetLength", system_int_arg);
1184 system_int_array_get_upper_bound_int = GetMethod (
1185 system_array_type, "GetUpperBound", system_int_arg);
1186 system_int_array_get_lower_bound_int = GetMethod (
1187 system_array_type, "GetLowerBound", system_int_arg);
1189 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1190 system_void_array_copyto_array_int = GetMethod (
1191 system_array_type, "CopyTo", system_array_int_arg);
1193 Type [] system_3_type_arg = {
1194 system_type_type, system_type_type, system_type_type };
1195 Type [] system_4_type_arg = {
1196 system_type_type, system_type_type, system_type_type, system_type_type };
1198 MethodInfo set_corlib_type_builders = GetMethod (
1199 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1200 system_4_type_arg, true, false);
1202 if (set_corlib_type_builders != null) {
1203 object[] args = new object [4];
1204 args [0] = object_type;
1205 args [1] = value_type;
1206 args [2] = enum_type;
1207 args [3] = void_type;
1209 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1211 // Compatibility for an older version of the class libs.
1212 set_corlib_type_builders = GetMethod (
1213 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1214 system_3_type_arg, true, true);
1216 if (set_corlib_type_builders == null) {
1217 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1221 object[] args = new object [3];
1222 args [0] = object_type;
1223 args [1] = value_type;
1224 args [2] = enum_type;
1226 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1230 system_object_expr.Type = object_type;
1231 system_string_expr.Type = string_type;
1232 system_boolean_expr.Type = bool_type;
1233 system_decimal_expr.Type = decimal_type;
1234 system_single_expr.Type = float_type;
1235 system_double_expr.Type = double_type;
1236 system_sbyte_expr.Type = sbyte_type;
1237 system_byte_expr.Type = byte_type;
1238 system_int16_expr.Type = short_type;
1239 system_uint16_expr.Type = ushort_type;
1240 system_int32_expr.Type = int32_type;
1241 system_uint32_expr.Type = uint32_type;
1242 system_int64_expr.Type = int64_type;
1243 system_uint64_expr.Type = uint64_type;
1244 system_char_expr.Type = char_type;
1245 system_void_expr.Type = void_type;
1246 system_asynccallback_expr.Type = asynccallback_type;
1247 system_iasyncresult_expr.Type = iasyncresult_type;
1248 system_valuetype_expr.Type = value_type;
1251 // These are only used for compare purposes
1253 anonymous_method_type = typeof (AnonymousMethod);
1257 // The helper methods that are used by the compiler
1259 public static void InitCodeHelpers ()
1262 // Now load the default methods that we use.
1264 Type [] string_string = { string_type, string_type };
1265 string_concat_string_string = GetMethod (
1266 string_type, "Concat", string_string);
1267 Type [] string_string_string = { string_type, string_type, string_type };
1268 string_concat_string_string_string = GetMethod (
1269 string_type, "Concat", string_string_string);
1270 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1271 string_concat_string_string_string_string = GetMethod (
1272 string_type, "Concat", string_string_string_string);
1273 Type[] params_string = { TypeManager.LookupType ("System.String[]") };
1274 string_concat_string_dot_dot_dot = GetMethod (
1275 string_type, "Concat", params_string);
1277 Type [] object_object = { object_type, object_type };
1278 string_concat_object_object = GetMethod (
1279 string_type, "Concat", object_object);
1280 Type [] object_object_object = { object_type, object_type, object_type };
1281 string_concat_object_object_object = GetMethod (
1282 string_type, "Concat", object_object_object);
1283 Type[] params_object = { TypeManager.LookupType ("System.Object[]") };
1284 string_concat_object_dot_dot_dot = GetMethod (
1285 string_type, "Concat", params_object);
1287 Type [] string_ = { string_type };
1288 string_isinterneted_string = GetMethod (
1289 string_type, "IsInterned", string_);
1291 Type [] runtime_type_handle = { runtime_handle_type };
1292 system_type_get_type_from_handle = GetMethod (
1293 type_type, "GetTypeFromHandle", runtime_type_handle);
1295 Type [] delegate_delegate = { delegate_type, delegate_type };
1296 delegate_combine_delegate_delegate = GetMethod (
1297 delegate_type, "Combine", delegate_delegate);
1299 delegate_remove_delegate_delegate = GetMethod (
1300 delegate_type, "Remove", delegate_delegate);
1305 Type [] void_arg = { };
1306 object_getcurrent_void = GetMethod (
1307 ienumerator_type, "get_Current", void_arg);
1308 bool_movenext_void = GetMethod (
1309 ienumerator_type, "MoveNext", void_arg);
1310 void_reset_void = GetMethod (
1311 ienumerator_type, "Reset", void_arg);
1312 void_dispose_void = GetMethod (
1313 idisposable_type, "Dispose", void_arg);
1314 int_get_offset_to_string_data = GetMethod (
1315 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1316 int_array_get_length = GetMethod (
1317 array_type, "get_Length", void_arg);
1318 int_array_get_rank = GetMethod (
1319 array_type, "get_Rank", void_arg);
1320 ienumerable_getenumerator_void = GetMethod (
1321 ienumerable_type, "GetEnumerator", void_arg);
1326 Type [] int_arg = { int32_type };
1327 int_array_get_length_int = GetMethod (
1328 array_type, "GetLength", int_arg);
1329 int_array_get_upper_bound_int = GetMethod (
1330 array_type, "GetUpperBound", int_arg);
1331 int_array_get_lower_bound_int = GetMethod (
1332 array_type, "GetLowerBound", int_arg);
1335 // System.Array methods
1337 object_array_clone = GetMethod (
1338 array_type, "Clone", void_arg);
1339 Type [] array_int_arg = { array_type, int32_type };
1340 void_array_copyto_array_int = GetMethod (
1341 array_type, "CopyTo", array_int_arg);
1346 Type [] object_arg = { object_type };
1347 void_monitor_enter_object = GetMethod (
1348 monitor_type, "Enter", object_arg);
1349 void_monitor_exit_object = GetMethod (
1350 monitor_type, "Exit", object_arg);
1352 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1354 void_initializearray_array_fieldhandle = GetMethod (
1355 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1360 int_getlength_int = GetMethod (
1361 array_type, "GetLength", int_arg);
1364 // Decimal constructors
1366 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1367 void_decimal_ctor_five_args = GetConstructor (
1368 decimal_type, dec_arg);
1373 cons_param_array_attribute = GetConstructor (
1374 param_array_type, void_arg);
1376 unverifiable_code_ctor = GetConstructor (
1377 unverifiable_code_type, void_arg);
1379 default_member_ctor = GetConstructor (default_member_type, string_);
1382 // InvalidOperationException
1384 invalid_operation_ctor = GetConstructor (
1385 invalid_operation_exception_type, void_arg);
1389 object_ctor = GetConstructor (object_type, void_arg);
1393 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1396 /// This is the "old", non-cache based FindMembers() function. We cannot use
1397 /// the cache here because there is no member name argument.
1399 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1400 MemberFilter filter, object criteria)
1402 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1405 // `builder_to_declspace' contains all dynamic types.
1409 Timer.StartTimer (TimerType.FindMembers);
1410 list = decl.FindMembers (mt, bf, filter, criteria);
1411 Timer.StopTimer (TimerType.FindMembers);
1416 // We have to take care of arrays specially, because GetType on
1417 // a TypeBuilder array will return a Type, not a TypeBuilder,
1418 // and we can not call FindMembers on this type.
1420 if (t.IsSubclassOf (TypeManager.array_type))
1421 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1424 // Since FindMembers will not lookup both static and instance
1425 // members, we emulate this behaviour here.
1427 if ((bf & instance_and_static) == instance_and_static){
1428 MemberInfo [] i_members = t.FindMembers (
1429 mt, bf & ~BindingFlags.Static, filter, criteria);
1431 int i_len = i_members.Length;
1433 MemberInfo one = i_members [0];
1436 // If any of these are present, we are done!
1438 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1439 return new MemberList (i_members);
1442 MemberInfo [] s_members = t.FindMembers (
1443 mt, bf & ~BindingFlags.Instance, filter, criteria);
1445 int s_len = s_members.Length;
1446 if (i_len > 0 || s_len > 0)
1447 return new MemberList (i_members, s_members);
1450 return new MemberList (i_members);
1452 return new MemberList (s_members);
1456 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1461 /// This method is only called from within MemberLookup. It tries to use the member
1462 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1463 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1464 /// our return value will already contain all inherited members and the caller don't need
1465 /// to check base classes and interfaces anymore.
1467 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1468 string name, out bool used_cache)
1471 // We have to take care of arrays specially, because GetType on
1472 // a TypeBuilder array will return a Type, not a TypeBuilder,
1473 // and we can not call FindMembers on this type.
1475 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1477 return TypeHandle.ArrayType.MemberCache.FindMembers (
1478 mt, bf, name, FilterWithClosure_delegate, null);
1482 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1483 // and we can ask the DeclSpace for the MemberCache.
1485 if (t is TypeBuilder) {
1486 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1487 MemberCache cache = decl.MemberCache;
1490 // If this DeclSpace has a MemberCache, use it.
1493 if (cache != null) {
1495 return cache.FindMembers (
1496 mt, bf, name, FilterWithClosure_delegate, null);
1499 // If there is no MemberCache, we need to use the "normal" FindMembers.
1500 // Note, this is a VERY uncommon route!
1503 Timer.StartTimer (TimerType.FindMembers);
1504 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1505 FilterWithClosure_delegate, name);
1506 Timer.StopTimer (TimerType.FindMembers);
1509 return (MemberInfo []) list;
1513 // This call will always succeed. There is exactly one TypeHandle instance per
1514 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1515 // if it didn't already exist.
1517 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1520 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1523 public static bool IsBuiltinType (Type t)
1525 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1526 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1527 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1528 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1534 public static bool IsBuiltinType (TypeContainer tc)
1536 return IsBuiltinType (tc.TypeBuilder);
1540 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1541 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1543 public static bool IsCLRType (Type t)
1545 if (t == object_type || t == int32_type || t == uint32_type ||
1546 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1547 t == char_type || t == short_type || t == bool_type ||
1548 t == sbyte_type || t == byte_type || t == ushort_type)
1554 public static bool IsDelegateType (Type t)
1556 if (t.IsSubclassOf (TypeManager.delegate_type))
1562 public static bool IsEnumType (Type t)
1564 if (t.IsSubclassOf (TypeManager.enum_type))
1569 public static bool IsBuiltinOrEnum (Type t)
1571 if (IsBuiltinType (t))
1581 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1583 public static bool IsUnmanagedType (Type t)
1585 if (IsBuiltinType (t) && t != TypeManager.string_type)
1594 if (IsValueType (t)){
1595 if (t is TypeBuilder){
1596 TypeContainer tc = LookupTypeContainer (t);
1598 if (tc.Fields != null){
1599 foreach (Field f in tc.Fields){
1600 if (f.FieldBuilder.IsStatic)
1602 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1608 FieldInfo [] fields = t.GetFields ();
1610 foreach (FieldInfo f in fields){
1613 if (!IsUnmanagedType (f.FieldType))
1623 public static bool IsValueType (Type t)
1625 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1631 public static bool IsInterfaceType (Type t)
1633 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1637 return tc.Kind == Kind.Interface;
1641 // Checks whether `type' is a subclass or nested child of `parent'.
1643 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1646 if ((type == parent) || type.IsSubclassOf (parent))
1649 // Handle nested types.
1650 type = type.DeclaringType;
1651 } while (type != null);
1657 // Checks whether `type' is a nested child of `parent'.
1659 public static bool IsNestedChildOf (Type type, Type parent)
1664 type = type.DeclaringType;
1665 while (type != null) {
1669 type = type.DeclaringType;
1676 // Do the right thing when returning the element type of an
1677 // array type based on whether we are compiling corlib or not
1679 public static Type GetElementType (Type t)
1681 if (RootContext.StdLib)
1682 return t.GetElementType ();
1684 return TypeToCoreType (t.GetElementType ());
1688 /// Returns the User Defined Types
1690 public static ArrayList UserTypes {
1696 public static Hashtable TypeContainers {
1698 return typecontainers;
1702 static Hashtable builder_to_constant;
1704 public static void RegisterConstant (FieldBuilder fb, Const c)
1706 if (builder_to_constant == null)
1707 builder_to_constant = new PtrHashtable ();
1709 if (builder_to_constant.Contains (fb))
1712 builder_to_constant.Add (fb, c);
1715 public static Const LookupConstant (FieldBuilder fb)
1717 if (builder_to_constant == null)
1720 return (Const) builder_to_constant [fb];
1724 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1728 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1729 /// for anything which is dynamic, and we need this in a number of places,
1730 /// we register this information here, and use it afterwards.
1732 static public void RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1737 method_arguments.Add (mb, args);
1738 method_internal_params.Add (mb, ip);
1741 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1743 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1746 if (method_internal_params.Contains (mb))
1747 return (InternalParameters) method_internal_params [mb];
1749 throw new Exception ("Argument for Method not registered" + mb);
1753 /// Returns the argument types for a method based on its methodbase
1755 /// For dynamic methods, we use the compiler provided types, for
1756 /// methods from existing assemblies we load them from GetParameters,
1757 /// and insert them into the cache
1759 static public Type [] GetArgumentTypes (MethodBase mb)
1761 object t = method_arguments [mb];
1765 ParameterInfo [] pi = mb.GetParameters ();
1772 types = new Type [c];
1773 for (int i = 0; i < c; i++)
1774 types [i] = pi [i].ParameterType;
1776 method_arguments.Add (mb, types);
1781 /// Returns the argument types for an indexer based on its PropertyInfo
1783 /// For dynamic indexers, we use the compiler provided types, for
1784 /// indexers from existing assemblies we load them from GetParameters,
1785 /// and insert them into the cache
1787 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1789 if (indexer_arguments.Contains (indexer))
1790 return (Type []) indexer_arguments [indexer];
1791 else if (indexer is PropertyBuilder)
1792 // If we're a PropertyBuilder and not in the
1793 // `indexer_arguments' hash, then we're a property and
1797 ParameterInfo [] pi = indexer.GetIndexParameters ();
1798 // Property, not an indexer.
1802 Type [] types = new Type [c];
1804 for (int i = 0; i < c; i++)
1805 types [i] = pi [i].ParameterType;
1807 indexer_arguments.Add (indexer, types);
1813 // This is a workaround the fact that GetValue is not
1814 // supported for dynamic types
1816 static Hashtable fields = new Hashtable ();
1817 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1819 if (fields.Contains (fb))
1822 fields.Add (fb, value);
1827 static public object GetValue (FieldBuilder fb)
1832 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1833 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1835 if (fieldbuilders_to_fields.Contains (fb))
1838 fieldbuilders_to_fields.Add (fb, f);
1843 // The return value can be null; This will be the case for
1844 // auxiliary FieldBuilders created by the compiler that have no
1845 // real field being declared on the source code
1847 static public FieldBase GetField (FieldInfo fb)
1849 return (FieldBase) fieldbuilders_to_fields [fb];
1852 static Hashtable events;
1854 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1857 events = new Hashtable ();
1859 if (!events.Contains (eb)) {
1860 events.Add (eb, new Pair (add, remove));
1864 static public MethodInfo GetAddMethod (EventInfo ei)
1866 if (ei is MyEventBuilder) {
1867 Pair pair = (Pair) events [ei];
1869 return (MethodInfo) pair.First;
1871 return ei.GetAddMethod (true);
1874 static public MethodInfo GetRemoveMethod (EventInfo ei)
1876 if (ei is MyEventBuilder) {
1877 Pair pair = (Pair) events [ei];
1879 return (MethodInfo) pair.Second;
1881 return ei.GetRemoveMethod (true);
1884 static Hashtable priv_fields_events;
1886 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1888 if (priv_fields_events == null)
1889 priv_fields_events = new Hashtable ();
1891 if (priv_fields_events.Contains (einfo))
1894 priv_fields_events.Add (einfo, builder);
1899 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1901 if (priv_fields_events == null)
1904 return (MemberInfo) priv_fields_events [ei];
1907 static Hashtable properties;
1909 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1911 if (properties == null)
1912 properties = new Hashtable ();
1914 if (properties.Contains (pb))
1917 properties.Add (pb, new Pair (get, set));
1922 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1923 MethodBase set, Type[] args)
1925 if (!RegisterProperty (pb, get,set))
1928 indexer_arguments.Add (pb, args);
1933 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1935 Hashtable hash = new Hashtable ();
1936 return CheckStructCycles (tc, seen, hash);
1939 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1942 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1946 // `seen' contains all types we've already visited.
1948 if (seen.Contains (tc))
1950 seen.Add (tc, null);
1952 if (tc.Fields == null)
1955 foreach (Field field in tc.Fields) {
1956 if (field.FieldBuilder.IsStatic)
1959 Type ftype = field.FieldBuilder.FieldType;
1960 TypeContainer ftc = LookupTypeContainer (ftype);
1964 if (hash.Contains (ftc)) {
1965 Report.Error (523, tc.Location,
1966 "Struct member `{0}.{1}' of type `{2}' " +
1967 "causes a cycle in the struct layout",
1968 tc.Name, field.Name, ftc.Name);
1973 // `hash' contains all types in the current path.
1975 hash.Add (tc, null);
1977 bool ok = CheckStructCycles (ftc, seen, hash);
1984 if (!seen.Contains (ftc))
1985 seen.Add (ftc, null);
1992 /// Given an array of interface types, expand and eliminate repeated ocurrences
1993 /// of an interface.
1997 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2000 public static TypeExpr[] ExpandInterfaces (TypeExpr [] base_interfaces)
2002 ArrayList new_ifaces = new ArrayList ();
2004 foreach (TypeExpr iface in base_interfaces){
2005 if (!new_ifaces.Contains (iface))
2006 new_ifaces.Add (iface);
2008 TypeExpr [] implementing = iface.GetInterfaces ();
2010 foreach (TypeExpr imp in implementing){
2011 if (!new_ifaces.Contains (imp))
2012 new_ifaces.Add (imp);
2015 TypeExpr [] ret = new TypeExpr [new_ifaces.Count];
2016 new_ifaces.CopyTo (ret, 0);
2020 static PtrHashtable iface_cache = new PtrHashtable ();
2023 /// This function returns the interfaces in the type `t'. Works with
2024 /// both types and TypeBuilders.
2026 public static TypeExpr [] GetInterfaces (Type t)
2029 TypeExpr [] cached = iface_cache [t] as TypeExpr [];
2034 // The reason for catching the Array case is that Reflection.Emit
2035 // will not return a TypeBuilder for Array types of TypeBuilder types,
2036 // but will still throw an exception if we try to call GetInterfaces
2039 // Since the array interfaces are always constant, we return those for
2044 t = TypeManager.array_type;
2046 if (t is TypeBuilder){
2047 TypeExpr [] parent_ifaces;
2049 if (t.BaseType == null)
2050 parent_ifaces = NoTypeExprs;
2052 parent_ifaces = GetInterfaces (t.BaseType);
2053 TypeExpr [] type_ifaces = (TypeExpr []) builder_to_ifaces [t];
2054 if (type_ifaces == null)
2055 type_ifaces = NoTypeExprs;
2057 int parent_count = parent_ifaces.Length;
2058 TypeExpr [] result = new TypeExpr [parent_count + type_ifaces.Length];
2059 parent_ifaces.CopyTo (result, 0);
2060 type_ifaces.CopyTo (result, parent_count);
2062 iface_cache [t] = result;
2065 Type [] ifaces = t.GetInterfaces ();
2066 if (ifaces.Length == 0)
2069 TypeExpr [] result = new TypeExpr [ifaces.Length];
2070 for (int i = 0; i < ifaces.Length; i++)
2071 result [i] = new TypeExpression (ifaces [i], Location.Null);
2073 iface_cache [t] = result;
2079 // gets the interfaces that are declared explicitly on t
2081 public static TypeExpr [] GetExplicitInterfaces (TypeBuilder t)
2083 return (TypeExpr []) builder_to_ifaces [t];
2087 /// The following is used to check if a given type implements an interface.
2088 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2090 public static bool ImplementsInterface (Type t, Type iface)
2092 TypeExpr [] interfaces;
2095 // FIXME OPTIMIZATION:
2096 // as soon as we hit a non-TypeBuiler in the interface
2097 // chain, we could return, as the `Type.GetInterfaces'
2098 // will return all the interfaces implement by the type
2102 interfaces = GetInterfaces (t);
2104 if (interfaces != null){
2105 foreach (TypeExpr i in interfaces){
2106 if (i.Type == iface)
2112 } while (t != null);
2117 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2119 // This is a custom version of Convert.ChangeType() which works
2120 // with the TypeBuilder defined types when compiling corlib.
2121 public static object ChangeType (object value, Type conversionType, out bool error)
2123 IConvertible convert_value = value as IConvertible;
2125 if (convert_value == null){
2131 // We must use Type.Equals() here since `conversionType' is
2132 // the TypeBuilder created version of a system type and not
2133 // the system type itself. You cannot use Type.GetTypeCode()
2134 // on such a type - it'd always return TypeCode.Object.
2138 if (conversionType.Equals (typeof (Boolean)))
2139 return (object)(convert_value.ToBoolean (nf_provider));
2140 else if (conversionType.Equals (typeof (Byte)))
2141 return (object)(convert_value.ToByte (nf_provider));
2142 else if (conversionType.Equals (typeof (Char)))
2143 return (object)(convert_value.ToChar (nf_provider));
2144 else if (conversionType.Equals (typeof (DateTime)))
2145 return (object)(convert_value.ToDateTime (nf_provider));
2146 else if (conversionType.Equals (typeof (Decimal)))
2147 return (object)(convert_value.ToDecimal (nf_provider));
2148 else if (conversionType.Equals (typeof (Double)))
2149 return (object)(convert_value.ToDouble (nf_provider));
2150 else if (conversionType.Equals (typeof (Int16)))
2151 return (object)(convert_value.ToInt16 (nf_provider));
2152 else if (conversionType.Equals (typeof (Int32)))
2153 return (object)(convert_value.ToInt32 (nf_provider));
2154 else if (conversionType.Equals (typeof (Int64)))
2155 return (object)(convert_value.ToInt64 (nf_provider));
2156 else if (conversionType.Equals (typeof (SByte)))
2157 return (object)(convert_value.ToSByte (nf_provider));
2158 else if (conversionType.Equals (typeof (Single)))
2159 return (object)(convert_value.ToSingle (nf_provider));
2160 else if (conversionType.Equals (typeof (String)))
2161 return (object)(convert_value.ToString (nf_provider));
2162 else if (conversionType.Equals (typeof (UInt16)))
2163 return (object)(convert_value.ToUInt16 (nf_provider));
2164 else if (conversionType.Equals (typeof (UInt32)))
2165 return (object)(convert_value.ToUInt32 (nf_provider));
2166 else if (conversionType.Equals (typeof (UInt64)))
2167 return (object)(convert_value.ToUInt64 (nf_provider));
2168 else if (conversionType.Equals (typeof (Object)))
2169 return (object)(value);
2179 // This is needed, because enumerations from assemblies
2180 // do not report their underlyingtype, but they report
2183 public static Type EnumToUnderlying (Type t)
2185 if (t == TypeManager.enum_type)
2188 t = t.UnderlyingSystemType;
2189 if (!TypeManager.IsEnumType (t))
2192 if (t is TypeBuilder) {
2193 // slow path needed to compile corlib
2194 if (t == TypeManager.bool_type ||
2195 t == TypeManager.byte_type ||
2196 t == TypeManager.sbyte_type ||
2197 t == TypeManager.char_type ||
2198 t == TypeManager.short_type ||
2199 t == TypeManager.ushort_type ||
2200 t == TypeManager.int32_type ||
2201 t == TypeManager.uint32_type ||
2202 t == TypeManager.int64_type ||
2203 t == TypeManager.uint64_type)
2205 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2207 TypeCode tc = Type.GetTypeCode (t);
2210 case TypeCode.Boolean:
2211 return TypeManager.bool_type;
2213 return TypeManager.byte_type;
2214 case TypeCode.SByte:
2215 return TypeManager.sbyte_type;
2217 return TypeManager.char_type;
2218 case TypeCode.Int16:
2219 return TypeManager.short_type;
2220 case TypeCode.UInt16:
2221 return TypeManager.ushort_type;
2222 case TypeCode.Int32:
2223 return TypeManager.int32_type;
2224 case TypeCode.UInt32:
2225 return TypeManager.uint32_type;
2226 case TypeCode.Int64:
2227 return TypeManager.int64_type;
2228 case TypeCode.UInt64:
2229 return TypeManager.uint64_type;
2231 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2235 // When compiling corlib and called with one of the core types, return
2236 // the corresponding typebuilder for that type.
2238 public static Type TypeToCoreType (Type t)
2240 if (RootContext.StdLib || (t is TypeBuilder))
2243 TypeCode tc = Type.GetTypeCode (t);
2246 case TypeCode.Boolean:
2247 return TypeManager.bool_type;
2249 return TypeManager.byte_type;
2250 case TypeCode.SByte:
2251 return TypeManager.sbyte_type;
2253 return TypeManager.char_type;
2254 case TypeCode.Int16:
2255 return TypeManager.short_type;
2256 case TypeCode.UInt16:
2257 return TypeManager.ushort_type;
2258 case TypeCode.Int32:
2259 return TypeManager.int32_type;
2260 case TypeCode.UInt32:
2261 return TypeManager.uint32_type;
2262 case TypeCode.Int64:
2263 return TypeManager.int64_type;
2264 case TypeCode.UInt64:
2265 return TypeManager.uint64_type;
2266 case TypeCode.Single:
2267 return TypeManager.float_type;
2268 case TypeCode.Double:
2269 return TypeManager.double_type;
2270 case TypeCode.String:
2271 return TypeManager.string_type;
2273 if (t == typeof (void))
2274 return TypeManager.void_type;
2275 if (t == typeof (object))
2276 return TypeManager.object_type;
2277 if (t == typeof (System.Type))
2278 return TypeManager.type_type;
2279 if (t == typeof (System.IntPtr))
2280 return TypeManager.intptr_type;
2286 /// Utility function that can be used to probe whether a type
2287 /// is managed or not.
2289 public static bool VerifyUnManaged (Type t, Location loc)
2291 if (t.IsValueType || t.IsPointer){
2293 // FIXME: this is more complex, we actually need to
2294 // make sure that the type does not contain any
2300 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2301 // We need this explicit check here to make it work when
2302 // compiling corlib.
2307 "Cannot take the address or size of a variable of a managed type ('" +
2308 CSharpName (t) + "')");
2313 /// Returns the name of the indexer in a given type.
2316 /// The default is not always `Item'. The user can change this behaviour by
2317 /// using the IndexerNameAttribute in the container.
2318 /// For example, the String class indexer is named `Chars' not `Item'
2320 public static string IndexerPropertyName (Type t)
2322 if (t is TypeBuilder) {
2323 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2324 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2327 System.Attribute attr = System.Attribute.GetCustomAttribute (
2328 t, TypeManager.default_member_type);
2330 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2331 return dma.MemberName;
2334 return TypeContainer.DefaultIndexerName;
2337 static MethodInfo declare_local_method = null;
2339 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2341 if (declare_local_method == null){
2342 declare_local_method = typeof (ILGenerator).GetMethod (
2344 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2346 new Type [] { typeof (Type), typeof (bool)},
2348 if (declare_local_method == null){
2349 Report.Warning (-24, new Location (-1),
2350 "This version of the runtime does not support making pinned local variables. " +
2351 "This code may cause errors on a runtime with a moving GC");
2352 return ig.DeclareLocal (t);
2355 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2359 // Returns whether the array of memberinfos contains the given method
2361 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2363 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2365 foreach (MethodBase method in array) {
2366 if (method.Name != new_method.Name)
2369 if (method is MethodInfo && new_method is MethodInfo)
2370 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2374 Type [] old_args = TypeManager.GetArgumentTypes (method);
2375 int old_count = old_args.Length;
2378 if (new_args.Length != old_count)
2381 for (i = 0; i < old_count; i++){
2382 if (old_args [i] != new_args [i])
2395 // We copy methods from `new_members' into `target_list' if the signature
2396 // for the method from in the new list does not exist in the target_list
2398 // The name is assumed to be the same.
2400 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2402 if (target_list == null){
2403 target_list = new ArrayList ();
2405 foreach (MemberInfo mi in new_members){
2406 if (mi is MethodBase)
2407 target_list.Add (mi);
2412 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2413 target_list.CopyTo (target_array, 0);
2415 foreach (MemberInfo mi in new_members){
2416 MethodBase new_method = (MethodBase) mi;
2418 if (!ArrayContainsMethod (target_array, new_method))
2419 target_list.Add (new_method);
2425 #region MemberLookup implementation
2428 // Whether we allow private members in the result (since FindMembers
2429 // uses NonPublic for both protected and private), we need to distinguish.
2432 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2437 internal class Closure {
2438 internal bool private_ok;
2440 // Who is invoking us and which type is being queried currently.
2441 internal Type invocation_type;
2442 internal Type qualifier_type;
2444 // The assembly that defines the type is that is calling us
2445 internal Assembly invocation_assembly;
2446 internal IList almost_match;
2448 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2450 if (invocation_type == null)
2453 Debug.Assert (IsSubclassOrNestedChildOf (invocation_type, m.DeclaringType));
2458 // A nested class has access to all the protected members visible to its parent.
2459 if (qualifier_type != null
2460 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2463 if (invocation_type == m.DeclaringType
2464 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2465 // Although a derived class can access protected members of its base class
2466 // it cannot do so through an instance of the base class (CS1540).
2467 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2468 if (qualifier_type == null
2469 || qualifier_type == invocation_type
2470 || qualifier_type.IsSubclassOf (invocation_type))
2474 if (almost_match != null)
2475 almost_match.Add (m);
2480 // This filter filters by name + whether it is ok to include private
2481 // members in the search
2483 internal bool Filter (MemberInfo m, object filter_criteria)
2486 // Hack: we know that the filter criteria will always be in the `closure'
2490 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2493 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2494 (m.DeclaringType == invocation_type))
2498 // Ugly: we need to find out the type of `m', and depending
2499 // on this, tell whether we accept or not
2501 if (m is MethodBase){
2502 MethodBase mb = (MethodBase) m;
2503 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2505 if (ma == MethodAttributes.Private)
2506 return private_ok || (invocation_type == m.DeclaringType) ||
2507 IsNestedChildOf (invocation_type, m.DeclaringType);
2509 // Assembly succeeds if we're in the same assembly.
2510 if (ma == MethodAttributes.Assembly)
2511 return (invocation_assembly == mb.DeclaringType.Assembly);
2513 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2514 if (ma == MethodAttributes.FamANDAssem){
2515 if (invocation_assembly != mb.DeclaringType.Assembly)
2519 // Family and FamANDAssem require that we derive.
2520 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem))
2521 return CheckValidFamilyAccess (mb.IsStatic, m);
2527 if (m is FieldInfo){
2528 FieldInfo fi = (FieldInfo) m;
2529 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2531 if (fa == FieldAttributes.Private)
2532 return private_ok || (invocation_type == m.DeclaringType) ||
2533 IsNestedChildOf (invocation_type, m.DeclaringType);
2535 // Assembly succeeds if we're in the same assembly.
2536 if (fa == FieldAttributes.Assembly)
2537 return (invocation_assembly == fi.DeclaringType.Assembly);
2539 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2540 if (fa == FieldAttributes.FamANDAssem){
2541 if (invocation_assembly != fi.DeclaringType.Assembly)
2545 // Family and FamANDAssem require that we derive.
2546 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem))
2547 return CheckValidFamilyAccess (fi.IsStatic, m);
2554 // EventInfos and PropertyInfos, return true because they lack permission
2555 // information, so we need to check later on the methods.
2561 static Closure closure = new Closure ();
2562 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2565 // Looks up a member called `name' in the `queried_type'. This lookup
2566 // is done by code that is contained in the definition for `invocation_type'
2567 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2569 // `invocation_type' is used to check whether we're allowed to access the requested
2570 // member wrt its protection level.
2572 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2573 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2574 // is B and qualifier_type is A). This is used to do the CS1540 check.
2576 // When resolving a SimpleName, `qualifier_type' is null.
2578 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2579 // the same than `queried_type' - except when we're being called from BaseAccess;
2580 // in this case, `invocation_type' is the current type and `queried_type' the base
2581 // type, so this'd normally trigger a CS1540.
2583 // The binding flags are `bf' and the kind of members being looked up are `mt'
2585 // The return value always includes private members which code in `invocation_type'
2586 // is allowed to access (using the specified `qualifier_type' if given); only use
2587 // BindingFlags.NonPublic to bypass the permission check.
2589 // The 'almost_match' argument is used for reporting error CS1540.
2591 // Returns an array of a single element for everything but Methods/Constructors
2592 // that might return multiple matches.
2594 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2595 Type queried_type, MemberTypes mt,
2596 BindingFlags original_bf, string name, IList almost_match)
2598 Timer.StartTimer (TimerType.MemberLookup);
2600 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2601 queried_type, mt, original_bf, name, almost_match);
2603 Timer.StopTimer (TimerType.MemberLookup);
2608 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2609 Type queried_type, MemberTypes mt,
2610 BindingFlags original_bf, string name, IList almost_match)
2612 BindingFlags bf = original_bf;
2614 ArrayList method_list = null;
2615 Type current_type = queried_type;
2616 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2617 bool skip_iface_check = true, used_cache = false;
2618 bool always_ok_flag = false;
2620 closure.invocation_type = invocation_type;
2621 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2622 closure.qualifier_type = qualifier_type;
2623 closure.almost_match = almost_match;
2626 // If we are a nested class, we always have access to our container
2629 if (invocation_type != null){
2630 string invocation_name = invocation_type.FullName;
2631 if (invocation_name.IndexOf ('+') != -1){
2632 string container = queried_type.FullName + "+";
2633 int container_length = container.Length;
2635 if (invocation_name.Length > container_length){
2636 string shared = invocation_name.Substring (0, container_length);
2638 if (shared == container)
2639 always_ok_flag = true;
2644 // This is from the first time we find a method
2645 // in most cases, we do not actually find a method in the base class
2646 // so we can just ignore it, and save the arraylist allocation
2647 MemberInfo [] first_members_list = null;
2648 bool use_first_members_list = false;
2654 // `NonPublic' is lame, because it includes both protected and
2655 // private methods, so we need to control this behavior by
2656 // explicitly tracking if a private method is ok or not.
2658 // The possible cases are:
2659 // public, private and protected (internal does not come into the
2662 if ((invocation_type != null) &&
2663 ((invocation_type == current_type) ||
2664 IsNestedChildOf (invocation_type, current_type)) ||
2666 bf = original_bf | BindingFlags.NonPublic;
2670 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2672 Timer.StopTimer (TimerType.MemberLookup);
2674 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2676 Timer.StartTimer (TimerType.MemberLookup);
2679 // When queried for an interface type, the cache will automatically check all
2680 // inherited members, so we don't need to do this here. However, this only
2681 // works if we already used the cache in the first iteration of this loop.
2683 // If we used the cache in any further iteration, we can still terminate the
2684 // loop since the cache always looks in all parent classes.
2690 skip_iface_check = false;
2692 if (current_type == TypeManager.object_type)
2695 current_type = current_type.BaseType;
2698 // This happens with interfaces, they have a null
2699 // basetype. Look members up in the Object class.
2701 if (current_type == null) {
2702 current_type = TypeManager.object_type;
2707 if (list.Length == 0)
2711 // Events and types are returned by both `static' and `instance'
2712 // searches, which means that our above FindMembers will
2713 // return two copies of the same.
2715 if (list.Length == 1 && !(list [0] is MethodBase)){
2720 // Multiple properties: we query those just to find out the indexer
2723 if (list [0] is PropertyInfo)
2727 // We found an event: the cache lookup returns both the event and
2728 // its private field.
2730 if (list [0] is EventInfo) {
2731 if ((list.Length == 2) && (list [1] is FieldInfo))
2732 return new MemberInfo [] { list [0] };
2739 // We found methods, turn the search into "method scan"
2743 if (first_members_list != null) {
2744 if (use_first_members_list) {
2745 method_list = CopyNewMethods (method_list, first_members_list);
2746 use_first_members_list = false;
2749 method_list = CopyNewMethods (method_list, list);
2751 first_members_list = list;
2752 use_first_members_list = true;
2753 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2755 } while (searching);
2757 if (use_first_members_list) {
2758 foreach (MemberInfo mi in first_members_list) {
2759 if (! (mi is MethodBase)) {
2760 method_list = CopyNewMethods (method_list, first_members_list);
2761 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2764 return (MemberInfo []) first_members_list;
2767 if (method_list != null && method_list.Count > 0)
2768 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2771 // This happens if we already used the cache in the first iteration, in this case
2772 // the cache already looked in all interfaces.
2774 if (skip_iface_check)
2778 // Interfaces do not list members they inherit, so we have to
2781 if (!queried_type.IsInterface)
2784 if (queried_type.IsArray)
2785 queried_type = TypeManager.array_type;
2787 TypeExpr [] ifaces = GetInterfaces (queried_type);
2791 foreach (TypeExpr itype in ifaces){
2794 x = MemberLookup (null, null, itype.Type, mt, bf, name, null);
2802 // Tests whether external method is really special
2803 public static bool IsSpecialMethod (MethodBase mb)
2805 string name = mb.Name;
2806 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2807 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2809 if (name.StartsWith ("add_"))
2810 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2812 if (name.StartsWith ("remove_"))
2813 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2815 if (name.StartsWith ("op_")){
2816 foreach (string oname in Unary.oper_names) {
2821 foreach (string oname in Binary.oper_names) {
2834 /// There is exactly one instance of this class per type.
2836 public sealed class TypeHandle : IMemberContainer {
2837 public readonly TypeHandle BaseType;
2839 readonly int id = ++next_id;
2840 static int next_id = 0;
2843 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2844 /// a TypeHandle yet, a new instance of it is created. This static method
2845 /// ensures that we'll only have one TypeHandle instance per type.
2847 public static TypeHandle GetTypeHandle (Type t)
2849 TypeHandle handle = (TypeHandle) type_hash [t];
2853 handle = new TypeHandle (t);
2854 type_hash.Add (t, handle);
2858 public static void CleanUp ()
2864 /// Returns the TypeHandle for TypeManager.object_type.
2866 public static IMemberContainer ObjectType {
2868 if (object_type != null)
2871 object_type = GetTypeHandle (TypeManager.object_type);
2878 /// Returns the TypeHandle for TypeManager.array_type.
2880 public static IMemberContainer ArrayType {
2882 if (array_type != null)
2885 array_type = GetTypeHandle (TypeManager.array_type);
2891 private static PtrHashtable type_hash = new PtrHashtable ();
2893 private static TypeHandle object_type = null;
2894 private static TypeHandle array_type = null;
2897 private bool is_interface;
2898 private MemberCache member_cache;
2900 private TypeHandle (Type type)
2903 if (type.BaseType != null)
2904 BaseType = GetTypeHandle (type.BaseType);
2905 this.is_interface = type.IsInterface;
2906 this.member_cache = new MemberCache (this, true);
2909 // IMemberContainer methods
2911 public string Name {
2913 return type.FullName;
2923 public IMemberContainer ParentContainer {
2929 public bool IsInterface {
2931 return is_interface;
2935 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2937 MemberInfo [] members;
2938 if (mt == MemberTypes.Event)
2939 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2941 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2943 Array.Reverse (members);
2945 return new MemberList (members);
2948 // IMemberFinder methods
2950 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2951 MemberFilter filter, object criteria)
2953 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
2956 public MemberCache MemberCache {
2958 return member_cache;
2962 public override string ToString ()
2964 if (BaseType != null)
2965 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2967 return "TypeHandle (" + id + "," + Name + ")";