2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
7 // Licensed under the terms of the GNU GPL
9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
14 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
15 // the behavior of the compilation. This can be removed if we rework
16 // the code to get a list of namespaces available.
18 #define SIMPLE_SPEEDUP
22 using System.Globalization;
23 using System.Collections;
24 using System.Reflection;
25 using System.Reflection.Emit;
27 using System.Text.RegularExpressions;
28 using System.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
33 public class TypeManager {
35 // A list of core types that the compiler requires or uses
37 static public Type object_type;
38 static public Type value_type;
39 static public Type string_type;
40 static public Type int32_type;
41 static public Type uint32_type;
42 static public Type int64_type;
43 static public Type uint64_type;
44 static public Type float_type;
45 static public Type double_type;
46 static public Type char_type;
47 static public Type char_ptr_type;
48 static public Type short_type;
49 static public Type decimal_type;
50 static public Type bool_type;
51 static public Type sbyte_type;
52 static public Type byte_type;
53 static public Type ushort_type;
54 static public Type enum_type;
55 static public Type delegate_type;
56 static public Type multicast_delegate_type;
57 static public Type void_type;
58 static public Type null_type;
59 static public Type enumeration_type;
60 static public Type array_type;
61 static public Type runtime_handle_type;
62 static public Type icloneable_type;
63 static public Type type_type;
64 static public Type ienumerator_type;
65 static public Type ienumerable_type;
66 static public Type idisposable_type;
67 static public Type iconvertible_type;
68 static public Type default_member_type;
69 static public Type iasyncresult_type;
70 static public Type asynccallback_type;
71 static public Type intptr_type;
72 static public Type monitor_type;
73 static public Type runtime_field_handle_type;
74 static public Type runtime_argument_handle_type;
75 static public Type attribute_type;
76 static public Type attribute_usage_type;
77 static public Type decimal_constant_attribute_type;
78 static public Type dllimport_type;
79 static public Type unverifiable_code_type;
80 static public Type methodimpl_attr_type;
81 static public Type marshal_as_attr_type;
82 static public Type param_array_type;
83 static public Type guid_attr_type;
84 static public Type void_ptr_type;
85 static public Type indexer_name_type;
86 static public Type exception_type;
87 static public Type invalid_operation_exception_type;
88 static public Type not_supported_exception_type;
89 static public Type obsolete_attribute_type;
90 static public Type conditional_attribute_type;
91 static public Type in_attribute_type;
92 static public Type out_attribute_type;
93 static public Type anonymous_method_type;
94 static public Type cls_compliant_attribute_type;
95 static public Type typed_reference_type;
96 static public Type arg_iterator_type;
97 static public Type mbr_type;
98 static public Type struct_layout_attribute_type;
99 static public Type field_offset_attribute_type;
100 static public Type security_attr_type;
103 // An empty array of types
105 static public Type [] NoTypes;
106 static public TypeExpr [] NoTypeExprs;
110 // Expressions representing the internal types. Used during declaration
113 static public TypeExpr system_object_expr, system_string_expr;
114 static public TypeExpr system_boolean_expr, system_decimal_expr;
115 static public TypeExpr system_single_expr, system_double_expr;
116 static public TypeExpr system_sbyte_expr, system_byte_expr;
117 static public TypeExpr system_int16_expr, system_uint16_expr;
118 static public TypeExpr system_int32_expr, system_uint32_expr;
119 static public TypeExpr system_int64_expr, system_uint64_expr;
120 static public TypeExpr system_char_expr, system_void_expr;
121 static public TypeExpr system_asynccallback_expr;
122 static public TypeExpr system_iasyncresult_expr;
123 static public TypeExpr system_valuetype_expr;
124 static public TypeExpr system_intptr_expr;
127 // This is only used when compiling corlib
129 static public Type system_int32_type;
130 static public Type system_array_type;
131 static public Type system_type_type;
132 static public Type system_assemblybuilder_type;
133 static public MethodInfo system_int_array_get_length;
134 static public MethodInfo system_int_array_get_rank;
135 static public MethodInfo system_object_array_clone;
136 static public MethodInfo system_int_array_get_length_int;
137 static public MethodInfo system_int_array_get_lower_bound_int;
138 static public MethodInfo system_int_array_get_upper_bound_int;
139 static public MethodInfo system_void_array_copyto_array_int;
143 // Internal, not really used outside
145 static Type runtime_helpers_type;
148 // These methods are called by code generated by the compiler
150 static public MethodInfo string_concat_string_string;
151 static public MethodInfo string_concat_string_string_string;
152 static public MethodInfo string_concat_string_string_string_string;
153 static public MethodInfo string_concat_string_dot_dot_dot;
154 static public MethodInfo string_concat_object_object;
155 static public MethodInfo string_concat_object_object_object;
156 static public MethodInfo string_concat_object_dot_dot_dot;
157 static public MethodInfo string_isinterneted_string;
158 static public MethodInfo system_type_get_type_from_handle;
159 static public MethodInfo object_getcurrent_void;
160 static public MethodInfo bool_movenext_void;
161 static public MethodInfo ienumerable_getenumerator_void;
162 static public MethodInfo void_reset_void;
163 static public MethodInfo void_dispose_void;
164 static public MethodInfo void_monitor_enter_object;
165 static public MethodInfo void_monitor_exit_object;
166 static public MethodInfo void_initializearray_array_fieldhandle;
167 static public MethodInfo int_getlength_int;
168 static public MethodInfo delegate_combine_delegate_delegate;
169 static public MethodInfo delegate_remove_delegate_delegate;
170 static public MethodInfo int_get_offset_to_string_data;
171 static public MethodInfo int_array_get_length;
172 static public MethodInfo int_array_get_rank;
173 static public MethodInfo object_array_clone;
174 static public MethodInfo int_array_get_length_int;
175 static public MethodInfo int_array_get_lower_bound_int;
176 static public MethodInfo int_array_get_upper_bound_int;
177 static public MethodInfo void_array_copyto_array_int;
180 // The attribute constructors.
182 static public ConstructorInfo object_ctor;
183 static public ConstructorInfo cons_param_array_attribute;
184 static public ConstructorInfo void_decimal_ctor_five_args;
185 static public ConstructorInfo void_decimal_ctor_int_arg;
186 static public ConstructorInfo unverifiable_code_ctor;
187 static public ConstructorInfo invalid_operation_ctor;
188 static public ConstructorInfo default_member_ctor;
189 static public ConstructorInfo decimal_constant_attribute_ctor;
192 // Holds the Array of Assemblies that have been loaded
193 // (either because it is the default or the user used the
194 // -r command line option)
196 static Assembly [] assemblies;
199 // Keeps a list of modules. We used this to do lookups
200 // on the module using GetType -- needed for arrays
202 static Module [] modules;
205 // This is the type_cache from the assemblies to avoid
206 // hitting System.Reflection on every lookup.
208 static Hashtable types;
211 // This is used to hotld the corresponding TypeContainer objects
212 // since we need this in FindMembers
214 static Hashtable typecontainers;
217 // Keeps track of those types that are defined by the
220 static ArrayList user_types;
222 static PtrHashtable builder_to_declspace;
224 static PtrHashtable builder_to_member_cache;
227 // Tracks the interfaces implemented by typebuilders. We only
228 // enter those who do implement or or more interfaces
230 static PtrHashtable builder_to_ifaces;
233 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
234 // the arguments to the method
236 static Hashtable method_arguments;
239 // Maps PropertyBuilder to a Type array that contains
240 // the arguments to the indexer
242 static Hashtable indexer_arguments;
245 // Maybe `method_arguments' should be replaced and only
246 // method_internal_params should be kept?
248 static Hashtable method_internal_params;
251 // Keeps track of methods
254 static Hashtable builder_to_method;
257 // Contains all public types from referenced assemblies.
258 // This member is used only if CLS Compliance verification is required.
260 public static Hashtable all_imported_types;
267 public static void CleanUp ()
269 // Lets get everything clean so that we can collect before generating code
273 typecontainers = null;
275 builder_to_declspace = null;
276 builder_to_member_cache = null;
277 builder_to_ifaces = null;
278 method_arguments = null;
279 indexer_arguments = null;
280 method_internal_params = null;
281 builder_to_method = null;
285 negative_hits = null;
286 builder_to_constant = null;
287 fieldbuilders_to_fields = null;
289 priv_fields_events = null;
292 TypeHandle.CleanUp ();
296 /// A filter for Findmembers that uses the Signature object to
299 static bool SignatureFilter (MemberInfo mi, object criteria)
301 Signature sig = (Signature) criteria;
303 if (!(mi is MethodBase))
306 if (mi.Name != sig.name)
309 int count = sig.args.Length;
311 if (mi is MethodBuilder || mi is ConstructorBuilder){
312 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
314 if (candidate_args.Length != count)
317 for (int i = 0; i < count; i++)
318 if (candidate_args [i] != sig.args [i])
323 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
325 if (pars.Length != count)
328 for (int i = 0; i < count; i++)
329 if (pars [i].ParameterType != sig.args [i])
335 // A delegate that points to the filter above.
336 static MemberFilter signature_filter;
339 // These are expressions that represent some of the internal data types, used
342 static void InitExpressionTypes ()
344 system_object_expr = new TypeLookupExpression ("System.Object");
345 system_string_expr = new TypeLookupExpression ("System.String");
346 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
347 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
348 system_single_expr = new TypeLookupExpression ("System.Single");
349 system_double_expr = new TypeLookupExpression ("System.Double");
350 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
351 system_byte_expr = new TypeLookupExpression ("System.Byte");
352 system_int16_expr = new TypeLookupExpression ("System.Int16");
353 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
354 system_int32_expr = new TypeLookupExpression ("System.Int32");
355 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
356 system_int64_expr = new TypeLookupExpression ("System.Int64");
357 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
358 system_char_expr = new TypeLookupExpression ("System.Char");
359 system_void_expr = new TypeLookupExpression ("System.Void");
360 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
361 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
362 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
363 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
366 static TypeManager ()
368 assemblies = new Assembly [0];
370 user_types = new ArrayList ();
372 types = new Hashtable ();
373 typecontainers = new Hashtable ();
375 builder_to_declspace = new PtrHashtable ();
376 builder_to_member_cache = new PtrHashtable ();
377 builder_to_method = new PtrHashtable ();
378 method_arguments = new PtrHashtable ();
379 method_internal_params = new PtrHashtable ();
380 indexer_arguments = new PtrHashtable ();
381 builder_to_ifaces = new PtrHashtable ();
383 NoTypes = new Type [0];
384 NoTypeExprs = new TypeExpr [0];
386 signature_filter = new MemberFilter (SignatureFilter);
387 InitExpressionTypes ();
390 public static void HandleDuplicate (string name, Type t)
392 Type prev = (Type) types [name];
393 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
397 // This probably never happens, as we catch this before
399 Report.Error (-17, "The type `" + name + "' has already been defined.");
403 tc = builder_to_declspace [t] as TypeContainer;
406 1595, "The type `" + name + "' is defined in an existing assembly;"+
407 " Using the new definition from: " + tc.Location);
410 1595, "The type `" + name + "' is defined in an existing assembly;");
413 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
419 public static void AddUserType (string name, TypeBuilder t)
424 HandleDuplicate (name, t);
430 // This entry point is used by types that we define under the covers
432 public static void RegisterBuilder (Type tb, Type [] ifaces)
435 builder_to_ifaces [tb] = ifaces;
438 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc)
440 builder_to_declspace.Add (t, tc);
441 typecontainers.Add (name, tc);
442 AddUserType (name, t);
445 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
450 HandleDuplicate (name, t);
453 builder_to_declspace.Add (t, del);
456 public static void AddEnumType (string name, TypeBuilder t, Enum en)
461 HandleDuplicate (name, t);
463 builder_to_declspace.Add (t, en);
466 public static void AddMethod (MethodBase builder, IMethodData method)
468 builder_to_method.Add (builder, method);
471 public static IMethodData GetMethod (MethodBase builder)
473 return (IMethodData) builder_to_method [builder];
477 /// Returns the DeclSpace whose Type is `t' or null if there is no
478 /// DeclSpace for `t' (ie, the Type comes from a library)
480 public static DeclSpace LookupDeclSpace (Type t)
482 return builder_to_declspace [t] as DeclSpace;
486 /// Returns the TypeContainer whose Type is `t' or null if there is no
487 /// TypeContainer for `t' (ie, the Type comes from a library)
489 public static TypeContainer LookupTypeContainer (Type t)
491 return builder_to_declspace [t] as TypeContainer;
494 public static MemberCache LookupMemberCache (Type t)
496 if (t is TypeBuilder) {
497 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
498 if (container != null)
499 return container.MemberCache;
502 return TypeHandle.GetMemberCache (t);
505 public static MemberCache LookupBaseInterfacesCache (Type t)
507 Type [] ifaces = t.GetInterfaces ();
509 if (ifaces != null && ifaces.Length == 1)
510 return LookupMemberCache (ifaces [0]);
512 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
513 MemberCache cache = builder_to_member_cache [t] as MemberCache;
517 cache = new MemberCache (ifaces);
518 builder_to_member_cache.Add (t, cache);
522 public static TypeContainer LookupInterface (Type t)
524 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
525 if ((tc == null) || (tc.Kind != Kind.Interface))
531 public static Delegate LookupDelegate (Type t)
533 return builder_to_declspace [t] as Delegate;
536 public static Enum LookupEnum (Type t)
538 return builder_to_declspace [t] as Enum;
541 public static Class LookupClass (Type t)
543 return (Class) builder_to_declspace [t];
547 /// Registers an assembly to load types from.
549 public static void AddAssembly (Assembly a)
551 foreach (Assembly assembly in assemblies) {
556 int top = assemblies.Length;
557 Assembly [] n = new Assembly [top + 1];
559 assemblies.CopyTo (n, 0);
565 public static Assembly [] GetAssemblies ()
571 /// Registers a module builder to lookup types from
573 public static void AddModule (Module mb)
575 int top = modules != null ? modules.Length : 0;
576 Module [] n = new Module [top + 1];
579 modules.CopyTo (n, 0);
584 public static Module[] Modules {
590 static Hashtable references = new Hashtable ();
593 // Gets the reference to T version of the Type (T&)
595 public static Type GetReferenceType (Type t)
597 string tname = t.FullName + "&";
599 Type ret = t.Assembly.GetType (tname);
602 // If the type comes from the assembly we are building
603 // We need the Hashtable, because .NET 1.1 will return different instance types
604 // every time we call ModuleBuilder.GetType.
607 if (references [t] == null)
608 references [t] = CodeGen.Module.Builder.GetType (tname);
609 ret = (Type) references [t];
615 static Hashtable pointers = new Hashtable ();
618 // Gets the pointer to T version of the Type (T*)
620 public static Type GetPointerType (Type t)
622 string tname = t.FullName + "*";
624 Type ret = t.Assembly.GetType (tname);
627 // If the type comes from the assembly we are building
628 // We need the Hashtable, because .NET 1.1 will return different instance types
629 // every time we call ModuleBuilder.GetType.
632 if (pointers [t] == null)
633 pointers [t] = CodeGen.Module.Builder.GetType (tname);
635 ret = (Type) pointers [t];
642 // Low-level lookup, cache-less
644 static Type LookupTypeReflection (string name)
648 foreach (Assembly a in assemblies){
649 t = a.GetType (name);
654 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
655 if (ta == TypeAttributes.NotPublic ||
656 ta == TypeAttributes.NestedPrivate ||
657 ta == TypeAttributes.NestedAssembly ||
658 ta == TypeAttributes.NestedFamANDAssem){
661 // In .NET pointers turn out to be private, even if their
662 // element type is not
665 t = t.GetElementType ();
675 foreach (Module mb in modules) {
676 t = mb.GetType (name);
684 static Hashtable negative_hits = new Hashtable ();
687 // This function is used when you want to avoid the lookups, and want to go
688 // directly to the source. This will use the cache.
690 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
691 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
692 // way to test things other than doing a fullname compare
694 public static Type LookupTypeDirect (string name)
696 Type t = (Type) types [name];
700 if (negative_hits.Contains (name))
703 t = LookupTypeReflection (name);
706 negative_hits [name] = null;
713 static readonly char [] dot_array = { '.' };
716 /// Returns the Type associated with @name, takes care of the fact that
717 /// reflection expects nested types to be separated from the main type
718 /// with a "+" instead of a "."
720 public static Type LookupType (string name)
725 // First lookup in user defined and cached values
728 t = (Type) types [name];
732 // Two thirds of the failures are caught here.
733 if (negative_hits.Contains (name))
736 // Sadly, split takes a param array, so this ends up allocating *EVERY TIME*
737 string [] elements = name.Split (dot_array);
738 int count = elements.Length;
740 for (int n = 1; n <= count; n++){
741 string top_level_type = String.Join (".", elements, 0, n);
743 // One third of the failures are caught here.
744 if (negative_hits.Contains (top_level_type))
747 t = (Type) types [top_level_type];
749 t = LookupTypeReflection (top_level_type);
751 negative_hits [top_level_type] = null;
762 // We know that System.Object does not have children, and since its the base of
763 // all the objects, it always gets probbed for inner classes.
765 if (top_level_type == "System.Object")
768 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
769 //Console.WriteLine ("Looking up: " + newt + " " + name);
770 t = LookupTypeReflection (newt);
772 negative_hits [name] = null;
777 negative_hits [name] = null;
782 /// Computes the namespaces that we import from the assemblies we reference.
784 public static void ComputeNamespaces ()
786 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
789 // First add the assembly namespaces
791 if (assembly_get_namespaces != null){
792 int count = assemblies.Length;
794 for (int i = 0; i < count; i++){
795 Assembly a = assemblies [i];
796 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
797 foreach (string ns in namespaces){
800 Namespace.LookupNamespace (ns, true);
804 Hashtable cache = new Hashtable ();
805 cache.Add ("", null);
806 foreach (Assembly a in assemblies) {
807 foreach (Type t in a.GetExportedTypes ()) {
808 string ns = t.Namespace;
809 if (ns == null || cache.Contains (ns))
812 Namespace.LookupNamespace (ns, true);
813 cache.Add (ns, null);
820 /// Fills static table with exported types from all referenced assemblies.
821 /// This information is required for CLS Compliance tests.
823 public static void LoadAllImportedTypes ()
825 all_imported_types = new Hashtable ();
826 foreach (Assembly a in assemblies) {
827 foreach (Type t in a.GetExportedTypes ()) {
828 all_imported_types [t.FullName] = t;
833 public static bool NamespaceClash (string name, Location loc)
835 if (Namespace.LookupNamespace (name, false) == null)
838 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
843 /// Returns the C# name of a type if possible, or the full type name otherwise
845 static public string CSharpName (Type t)
847 return Regex.Replace (t.FullName,
849 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
850 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
851 @"Boolean|String|Void|Null)" +
853 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
856 static String CSharpNameMatch (Match match)
858 string s = match.Groups [1].Captures [0].Value;
860 Replace ("int32", "int").
861 Replace ("uint32", "uint").
862 Replace ("int16", "short").
863 Replace ("uint16", "ushort").
864 Replace ("int64", "long").
865 Replace ("uint64", "ulong").
866 Replace ("single", "float").
867 Replace ("boolean", "bool")
868 + match.Groups [2].Captures [0].Value;
872 /// Returns the signature of the method with full namespace classification
874 static public string GetFullNameSignature (MemberInfo mi)
876 // Unfortunately, there's no dynamic dispatch on the arguments of a function.
877 return (mi is MethodBase)
878 ? GetFullNameSignature (mi as MethodBase)
879 : mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
882 static public string GetFullNameSignature (MethodBase mb)
884 string name = mb.Name;
886 name = mb.DeclaringType.Name;
888 if (mb.IsSpecialName) {
889 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
890 name = name.Remove (0, 4);
897 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
901 /// Returns the signature of the property and indexer
903 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
906 return GetFullNameSignature (pb);
909 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
910 string signature = GetFullNameSignature (mb);
911 string arg = TypeManager.LookupParametersByBuilder (mb).ParameterDesc (0);
912 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
916 /// Returns the signature of the method
918 static public string CSharpSignature (MethodBase mb)
920 StringBuilder sig = new StringBuilder ("(");
923 // FIXME: We should really have a single function to do
924 // everything instead of the following 5 line pattern
926 ParameterData iparams = LookupParametersByBuilder (mb);
929 iparams = new ReflectionParameters (mb);
932 if (mb.IsSpecialName && iparams.Count == 0 && !mb.IsConstructor)
933 return GetFullNameSignature (mb);
935 for (int i = 0; i < iparams.Count; i++) {
939 sig.Append (iparams.ParameterDesc (i));
944 if (mb.IsSpecialName && iparams.Count == 1 && !mb.IsConstructor) {
945 sig.Replace ('(', '[');
946 sig.Replace (')', ']');
949 return GetFullNameSignature (mb) + sig.ToString ();
953 /// Looks up a type, and aborts if it is not found. This is used
954 /// by types required by the compiler
956 static Type CoreLookupType (string name)
958 Type t = LookupTypeDirect (name);
961 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
962 Environment.Exit (1);
969 /// Returns the MethodInfo for a method named `name' defined
970 /// in type `t' which takes arguments of types `args'
972 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
976 BindingFlags flags = instance_and_static | BindingFlags.Public;
982 flags |= BindingFlags.NonPublic;
984 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
985 if (list.Count == 0) {
987 Report.Error (-19, "Can not find the core function `" + name + "'");
991 MethodInfo mi = list [0] as MethodInfo;
994 Report.Error (-19, "Can not find the core function `" + name + "'");
1001 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
1003 return GetMethod (t, name, args, false, report_errors);
1006 static MethodInfo GetMethod (Type t, string name, Type [] args)
1008 return GetMethod (t, name, args, true);
1013 /// Returns the ConstructorInfo for "args"
1015 static ConstructorInfo GetConstructor (Type t, Type [] args)
1023 list = FindMembers (t, MemberTypes.Constructor,
1024 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1025 signature_filter, sig);
1026 if (list.Count == 0){
1027 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1031 ConstructorInfo ci = list [0] as ConstructorInfo;
1033 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1040 public static void InitEnumUnderlyingTypes ()
1043 int32_type = CoreLookupType ("System.Int32");
1044 int64_type = CoreLookupType ("System.Int64");
1045 uint32_type = CoreLookupType ("System.UInt32");
1046 uint64_type = CoreLookupType ("System.UInt64");
1047 byte_type = CoreLookupType ("System.Byte");
1048 sbyte_type = CoreLookupType ("System.SByte");
1049 short_type = CoreLookupType ("System.Int16");
1050 ushort_type = CoreLookupType ("System.UInt16");
1054 /// The types have to be initialized after the initial
1055 /// population of the type has happened (for example, to
1056 /// bootstrap the corlib.dll
1058 public static void InitCoreTypes ()
1060 object_type = CoreLookupType ("System.Object");
1061 value_type = CoreLookupType ("System.ValueType");
1063 InitEnumUnderlyingTypes ();
1065 char_type = CoreLookupType ("System.Char");
1066 string_type = CoreLookupType ("System.String");
1067 float_type = CoreLookupType ("System.Single");
1068 double_type = CoreLookupType ("System.Double");
1069 char_ptr_type = CoreLookupType ("System.Char*");
1070 decimal_type = CoreLookupType ("System.Decimal");
1071 bool_type = CoreLookupType ("System.Boolean");
1072 enum_type = CoreLookupType ("System.Enum");
1074 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1075 delegate_type = CoreLookupType ("System.Delegate");
1077 array_type = CoreLookupType ("System.Array");
1078 void_type = CoreLookupType ("System.Void");
1079 type_type = CoreLookupType ("System.Type");
1081 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1082 runtime_argument_handle_type = CoreLookupType ("System.RuntimeArgumentHandle");
1083 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1084 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1085 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1086 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1087 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1088 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1089 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1090 idisposable_type = CoreLookupType ("System.IDisposable");
1091 icloneable_type = CoreLookupType ("System.ICloneable");
1092 iconvertible_type = CoreLookupType ("System.IConvertible");
1093 monitor_type = CoreLookupType ("System.Threading.Monitor");
1094 intptr_type = CoreLookupType ("System.IntPtr");
1096 attribute_type = CoreLookupType ("System.Attribute");
1097 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1098 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1099 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1100 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1101 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1102 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1103 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices.OutAttribute");
1104 typed_reference_type = CoreLookupType ("System.TypedReference");
1105 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1106 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1107 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices.DecimalConstantAttribute");
1110 // Sigh. Remove this before the release. Wonder what versions of Mono
1111 // people are running.
1113 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1115 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1117 void_ptr_type = CoreLookupType ("System.Void*");
1119 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1121 exception_type = CoreLookupType ("System.Exception");
1122 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1123 not_supported_exception_type = CoreLookupType ("System.NotSupportedException");
1128 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1129 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1130 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1131 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1132 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1133 security_attr_type = CoreLookupType ("System.Security.Permissions.SecurityAttribute");
1136 // When compiling corlib, store the "real" types here.
1138 if (!RootContext.StdLib) {
1139 system_int32_type = typeof (System.Int32);
1140 system_array_type = typeof (System.Array);
1141 system_type_type = typeof (System.Type);
1142 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1144 Type [] void_arg = { };
1145 system_int_array_get_length = GetMethod (
1146 system_array_type, "get_Length", void_arg);
1147 system_int_array_get_rank = GetMethod (
1148 system_array_type, "get_Rank", void_arg);
1149 system_object_array_clone = GetMethod (
1150 system_array_type, "Clone", void_arg);
1152 Type [] system_int_arg = { system_int32_type };
1153 system_int_array_get_length_int = GetMethod (
1154 system_array_type, "GetLength", system_int_arg);
1155 system_int_array_get_upper_bound_int = GetMethod (
1156 system_array_type, "GetUpperBound", system_int_arg);
1157 system_int_array_get_lower_bound_int = GetMethod (
1158 system_array_type, "GetLowerBound", system_int_arg);
1160 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1161 system_void_array_copyto_array_int = GetMethod (
1162 system_array_type, "CopyTo", system_array_int_arg);
1164 Type [] system_3_type_arg = {
1165 system_type_type, system_type_type, system_type_type };
1166 Type [] system_4_type_arg = {
1167 system_type_type, system_type_type, system_type_type, system_type_type };
1169 MethodInfo set_corlib_type_builders = GetMethod (
1170 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1171 system_4_type_arg, true, false);
1173 if (set_corlib_type_builders != null) {
1174 object[] args = new object [4];
1175 args [0] = object_type;
1176 args [1] = value_type;
1177 args [2] = enum_type;
1178 args [3] = void_type;
1180 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1182 // Compatibility for an older version of the class libs.
1183 set_corlib_type_builders = GetMethod (
1184 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1185 system_3_type_arg, true, true);
1187 if (set_corlib_type_builders == null) {
1188 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1192 object[] args = new object [3];
1193 args [0] = object_type;
1194 args [1] = value_type;
1195 args [2] = enum_type;
1197 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1201 system_object_expr.Type = object_type;
1202 system_string_expr.Type = string_type;
1203 system_boolean_expr.Type = bool_type;
1204 system_decimal_expr.Type = decimal_type;
1205 system_single_expr.Type = float_type;
1206 system_double_expr.Type = double_type;
1207 system_sbyte_expr.Type = sbyte_type;
1208 system_byte_expr.Type = byte_type;
1209 system_int16_expr.Type = short_type;
1210 system_uint16_expr.Type = ushort_type;
1211 system_int32_expr.Type = int32_type;
1212 system_uint32_expr.Type = uint32_type;
1213 system_int64_expr.Type = int64_type;
1214 system_uint64_expr.Type = uint64_type;
1215 system_char_expr.Type = char_type;
1216 system_void_expr.Type = void_type;
1217 system_asynccallback_expr.Type = asynccallback_type;
1218 system_iasyncresult_expr.Type = iasyncresult_type;
1219 system_valuetype_expr.Type = value_type;
1222 // These are only used for compare purposes
1224 anonymous_method_type = typeof (AnonymousMethod);
1225 null_type = typeof (NullType);
1229 // The helper methods that are used by the compiler
1231 public static void InitCodeHelpers ()
1234 // Now load the default methods that we use.
1236 Type [] string_string = { string_type, string_type };
1237 string_concat_string_string = GetMethod (
1238 string_type, "Concat", string_string);
1239 Type [] string_string_string = { string_type, string_type, string_type };
1240 string_concat_string_string_string = GetMethod (
1241 string_type, "Concat", string_string_string);
1242 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1243 string_concat_string_string_string_string = GetMethod (
1244 string_type, "Concat", string_string_string_string);
1245 Type[] params_string = { TypeManager.LookupType ("System.String[]") };
1246 string_concat_string_dot_dot_dot = GetMethod (
1247 string_type, "Concat", params_string);
1249 Type [] object_object = { object_type, object_type };
1250 string_concat_object_object = GetMethod (
1251 string_type, "Concat", object_object);
1252 Type [] object_object_object = { object_type, object_type, object_type };
1253 string_concat_object_object_object = GetMethod (
1254 string_type, "Concat", object_object_object);
1255 Type[] params_object = { TypeManager.LookupType ("System.Object[]") };
1256 string_concat_object_dot_dot_dot = GetMethod (
1257 string_type, "Concat", params_object);
1259 Type [] string_ = { string_type };
1260 string_isinterneted_string = GetMethod (
1261 string_type, "IsInterned", string_);
1263 Type [] runtime_type_handle = { runtime_handle_type };
1264 system_type_get_type_from_handle = GetMethod (
1265 type_type, "GetTypeFromHandle", runtime_type_handle);
1267 Type [] delegate_delegate = { delegate_type, delegate_type };
1268 delegate_combine_delegate_delegate = GetMethod (
1269 delegate_type, "Combine", delegate_delegate);
1271 delegate_remove_delegate_delegate = GetMethod (
1272 delegate_type, "Remove", delegate_delegate);
1277 Type [] void_arg = { };
1278 object_getcurrent_void = GetMethod (
1279 ienumerator_type, "get_Current", void_arg);
1280 bool_movenext_void = GetMethod (
1281 ienumerator_type, "MoveNext", void_arg);
1282 void_reset_void = GetMethod (
1283 ienumerator_type, "Reset", void_arg);
1284 void_dispose_void = GetMethod (
1285 idisposable_type, "Dispose", void_arg);
1286 int_get_offset_to_string_data = GetMethod (
1287 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1288 int_array_get_length = GetMethod (
1289 array_type, "get_Length", void_arg);
1290 int_array_get_rank = GetMethod (
1291 array_type, "get_Rank", void_arg);
1292 ienumerable_getenumerator_void = GetMethod (
1293 ienumerable_type, "GetEnumerator", void_arg);
1298 Type [] int_arg = { int32_type };
1299 int_array_get_length_int = GetMethod (
1300 array_type, "GetLength", int_arg);
1301 int_array_get_upper_bound_int = GetMethod (
1302 array_type, "GetUpperBound", int_arg);
1303 int_array_get_lower_bound_int = GetMethod (
1304 array_type, "GetLowerBound", int_arg);
1307 // System.Array methods
1309 object_array_clone = GetMethod (
1310 array_type, "Clone", void_arg);
1311 Type [] array_int_arg = { array_type, int32_type };
1312 void_array_copyto_array_int = GetMethod (
1313 array_type, "CopyTo", array_int_arg);
1318 Type [] object_arg = { object_type };
1319 void_monitor_enter_object = GetMethod (
1320 monitor_type, "Enter", object_arg);
1321 void_monitor_exit_object = GetMethod (
1322 monitor_type, "Exit", object_arg);
1324 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1326 void_initializearray_array_fieldhandle = GetMethod (
1327 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1332 int_getlength_int = GetMethod (
1333 array_type, "GetLength", int_arg);
1336 // Decimal constructors
1338 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1339 void_decimal_ctor_five_args = GetConstructor (
1340 decimal_type, dec_arg);
1342 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1347 cons_param_array_attribute = GetConstructor (
1348 param_array_type, void_arg);
1350 unverifiable_code_ctor = GetConstructor (
1351 unverifiable_code_type, void_arg);
1353 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1354 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1356 default_member_ctor = GetConstructor (default_member_type, string_);
1359 // InvalidOperationException
1361 invalid_operation_ctor = GetConstructor (
1362 invalid_operation_exception_type, void_arg);
1366 object_ctor = GetConstructor (object_type, void_arg);
1370 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1373 /// This is the "old", non-cache based FindMembers() function. We cannot use
1374 /// the cache here because there is no member name argument.
1376 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1377 MemberFilter filter, object criteria)
1379 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1382 // `builder_to_declspace' contains all dynamic types.
1386 Timer.StartTimer (TimerType.FindMembers);
1387 list = decl.FindMembers (mt, bf, filter, criteria);
1388 Timer.StopTimer (TimerType.FindMembers);
1393 // We have to take care of arrays specially, because GetType on
1394 // a TypeBuilder array will return a Type, not a TypeBuilder,
1395 // and we can not call FindMembers on this type.
1397 if (t.IsSubclassOf (TypeManager.array_type))
1398 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1401 // Since FindMembers will not lookup both static and instance
1402 // members, we emulate this behaviour here.
1404 if ((bf & instance_and_static) == instance_and_static){
1405 MemberInfo [] i_members = t.FindMembers (
1406 mt, bf & ~BindingFlags.Static, filter, criteria);
1408 int i_len = i_members.Length;
1410 MemberInfo one = i_members [0];
1413 // If any of these are present, we are done!
1415 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1416 return new MemberList (i_members);
1419 MemberInfo [] s_members = t.FindMembers (
1420 mt, bf & ~BindingFlags.Instance, filter, criteria);
1422 int s_len = s_members.Length;
1423 if (i_len > 0 || s_len > 0)
1424 return new MemberList (i_members, s_members);
1427 return new MemberList (i_members);
1429 return new MemberList (s_members);
1433 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1438 /// This method is only called from within MemberLookup. It tries to use the member
1439 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1440 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1441 /// our return value will already contain all inherited members and the caller don't need
1442 /// to check base classes and interfaces anymore.
1444 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1445 string name, out bool used_cache)
1450 // We have to take care of arrays specially, because GetType on
1451 // a TypeBuilder array will return a Type, not a TypeBuilder,
1452 // and we can not call FindMembers on this type.
1454 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1456 return TypeHandle.ArrayType.MemberCache.FindMembers (
1457 mt, bf, name, FilterWithClosure_delegate, null);
1461 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1462 // and we can ask the DeclSpace for the MemberCache.
1464 if (t is TypeBuilder) {
1465 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1466 cache = decl.MemberCache;
1469 // If this DeclSpace has a MemberCache, use it.
1472 if (cache != null) {
1474 return cache.FindMembers (
1475 mt, bf, name, FilterWithClosure_delegate, null);
1478 // If there is no MemberCache, we need to use the "normal" FindMembers.
1479 // Note, this is a VERY uncommon route!
1482 Timer.StartTimer (TimerType.FindMembers);
1483 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1484 FilterWithClosure_delegate, name);
1485 Timer.StopTimer (TimerType.FindMembers);
1488 return (MemberInfo []) list;
1492 // This call will always succeed. There is exactly one TypeHandle instance per
1493 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1494 // the corresponding MemberCache.
1496 cache = TypeHandle.GetMemberCache (t);
1499 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1502 public static bool IsBuiltinType (Type t)
1504 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1505 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1506 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1507 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1513 public static bool IsBuiltinType (TypeContainer tc)
1515 return IsBuiltinType (tc.TypeBuilder);
1519 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1520 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1522 public static bool IsCLRType (Type t)
1524 if (t == object_type || t == int32_type || t == uint32_type ||
1525 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1526 t == char_type || t == short_type || t == bool_type ||
1527 t == sbyte_type || t == byte_type || t == ushort_type)
1533 public static bool IsDelegateType (Type t)
1535 if (t.IsSubclassOf (TypeManager.delegate_type))
1541 public static bool IsEnumType (Type t)
1543 if (t.IsSubclassOf (TypeManager.enum_type))
1548 public static bool IsBuiltinOrEnum (Type t)
1550 if (IsBuiltinType (t))
1560 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1562 public static bool IsUnmanagedType (Type t)
1564 if (IsBuiltinType (t) && t != TypeManager.string_type)
1573 if (IsValueType (t)){
1574 if (t is TypeBuilder){
1575 TypeContainer tc = LookupTypeContainer (t);
1577 if (tc.Fields != null){
1578 foreach (Field f in tc.Fields){
1579 if (f.FieldBuilder.IsStatic)
1581 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1587 FieldInfo [] fields = t.GetFields ();
1589 foreach (FieldInfo f in fields){
1592 if (!IsUnmanagedType (f.FieldType))
1602 public static bool IsValueType (Type t)
1604 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1610 public static bool IsInterfaceType (Type t)
1612 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1616 return tc.Kind == Kind.Interface;
1619 public static bool IsSubclassOf (Type type, Type base_type)
1622 if (type.Equals (base_type))
1625 type = type.BaseType;
1626 } while (type != null);
1631 public static bool IsFamilyAccessible (Type type, Type base_type)
1633 return IsSubclassOf (type, base_type);
1637 // Checks whether `type' is a subclass or nested child of `base_type'.
1639 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1642 if ((type == base_type) || type.IsSubclassOf (base_type))
1645 // Handle nested types.
1646 type = type.DeclaringType;
1647 } while (type != null);
1653 // Checks whether `type' is a nested child of `parent'.
1655 public static bool IsNestedChildOf (Type type, Type parent)
1660 type = type.DeclaringType;
1661 while (type != null) {
1665 type = type.DeclaringType;
1672 // Do the right thing when returning the element type of an
1673 // array type based on whether we are compiling corlib or not
1675 public static Type GetElementType (Type t)
1677 if (RootContext.StdLib)
1678 return t.GetElementType ();
1680 return TypeToCoreType (t.GetElementType ());
1684 /// Returns the User Defined Types
1686 public static ArrayList UserTypes {
1692 public static Hashtable TypeContainers {
1694 return typecontainers;
1698 static Hashtable builder_to_constant;
1700 public static void RegisterConstant (FieldBuilder fb, Const c)
1702 if (builder_to_constant == null)
1703 builder_to_constant = new PtrHashtable ();
1705 if (builder_to_constant.Contains (fb))
1708 builder_to_constant.Add (fb, c);
1711 public static Const LookupConstant (FieldBuilder fb)
1713 if (builder_to_constant == null)
1716 return (Const) builder_to_constant [fb];
1720 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1724 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1725 /// for anything which is dynamic, and we need this in a number of places,
1726 /// we register this information here, and use it afterwards.
1728 static public void RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1733 method_arguments.Add (mb, args);
1734 method_internal_params.Add (mb, ip);
1737 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1739 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1742 if (method_internal_params.Contains (mb))
1743 return (InternalParameters) method_internal_params [mb];
1745 throw new Exception ("Argument for Method not registered" + mb);
1749 /// Returns the argument types for a method based on its methodbase
1751 /// For dynamic methods, we use the compiler provided types, for
1752 /// methods from existing assemblies we load them from GetParameters,
1753 /// and insert them into the cache
1755 static public Type [] GetArgumentTypes (MethodBase mb)
1757 object t = method_arguments [mb];
1761 ParameterInfo [] pi = mb.GetParameters ();
1768 types = new Type [c];
1769 for (int i = 0; i < c; i++)
1770 types [i] = pi [i].ParameterType;
1772 method_arguments.Add (mb, types);
1777 /// Returns the argument types for an indexer based on its PropertyInfo
1779 /// For dynamic indexers, we use the compiler provided types, for
1780 /// indexers from existing assemblies we load them from GetParameters,
1781 /// and insert them into the cache
1783 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1785 if (indexer_arguments.Contains (indexer))
1786 return (Type []) indexer_arguments [indexer];
1787 else if (indexer is PropertyBuilder)
1788 // If we're a PropertyBuilder and not in the
1789 // `indexer_arguments' hash, then we're a property and
1793 ParameterInfo [] pi = indexer.GetIndexParameters ();
1794 // Property, not an indexer.
1798 Type [] types = new Type [c];
1800 for (int i = 0; i < c; i++)
1801 types [i] = pi [i].ParameterType;
1803 indexer_arguments.Add (indexer, types);
1809 // This is a workaround the fact that GetValue is not
1810 // supported for dynamic types
1812 static Hashtable fields = new Hashtable ();
1813 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1815 if (fields.Contains (fb))
1818 fields.Add (fb, value);
1823 static public object GetValue (FieldBuilder fb)
1828 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1829 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1831 if (fieldbuilders_to_fields.Contains (fb))
1834 fieldbuilders_to_fields.Add (fb, f);
1839 // The return value can be null; This will be the case for
1840 // auxiliary FieldBuilders created by the compiler that have no
1841 // real field being declared on the source code
1843 static public FieldBase GetField (FieldInfo fb)
1845 return (FieldBase) fieldbuilders_to_fields [fb];
1848 static Hashtable events;
1850 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1853 events = new Hashtable ();
1855 if (!events.Contains (eb)) {
1856 events.Add (eb, new Pair (add, remove));
1860 static public MethodInfo GetAddMethod (EventInfo ei)
1862 if (ei is MyEventBuilder) {
1863 Pair pair = (Pair) events [ei];
1865 return (MethodInfo) pair.First;
1867 return ei.GetAddMethod (true);
1870 static public MethodInfo GetRemoveMethod (EventInfo ei)
1872 if (ei is MyEventBuilder) {
1873 Pair pair = (Pair) events [ei];
1875 return (MethodInfo) pair.Second;
1877 return ei.GetRemoveMethod (true);
1880 static Hashtable priv_fields_events;
1882 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1884 if (priv_fields_events == null)
1885 priv_fields_events = new Hashtable ();
1887 if (priv_fields_events.Contains (einfo))
1890 priv_fields_events.Add (einfo, builder);
1895 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1897 if (priv_fields_events == null)
1900 return (MemberInfo) priv_fields_events [ei];
1903 static Hashtable properties;
1905 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1907 if (properties == null)
1908 properties = new Hashtable ();
1910 if (properties.Contains (pb))
1913 properties.Add (pb, new Pair (get, set));
1918 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1919 MethodBase set, Type[] args)
1921 if (!RegisterProperty (pb, get,set))
1924 indexer_arguments.Add (pb, args);
1929 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
1931 Hashtable hash = new Hashtable ();
1932 return CheckStructCycles (tc, seen, hash);
1935 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
1938 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
1942 // `seen' contains all types we've already visited.
1944 if (seen.Contains (tc))
1946 seen.Add (tc, null);
1948 if (tc.Fields == null)
1951 foreach (Field field in tc.Fields) {
1952 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
1955 Type ftype = field.FieldBuilder.FieldType;
1956 TypeContainer ftc = LookupTypeContainer (ftype);
1960 if (hash.Contains (ftc)) {
1961 Report.Error (523, tc.Location,
1962 "Struct member `{0}.{1}' of type `{2}' " +
1963 "causes a cycle in the struct layout",
1964 tc.Name, field.Name, ftc.Name);
1969 // `hash' contains all types in the current path.
1971 hash.Add (tc, null);
1973 bool ok = CheckStructCycles (ftc, seen, hash);
1980 if (!seen.Contains (ftc))
1981 seen.Add (ftc, null);
1988 /// Given an array of interface types, expand and eliminate repeated ocurrences
1989 /// of an interface.
1993 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1996 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
1998 ArrayList new_ifaces = new ArrayList ();
2000 foreach (TypeExpr iface in base_interfaces){
2001 Type itype = iface.ResolveType (ec);
2005 if (!new_ifaces.Contains (itype))
2006 new_ifaces.Add (itype);
2008 Type [] implementing = itype.GetInterfaces ();
2010 foreach (Type imp in implementing){
2011 if (!new_ifaces.Contains (imp))
2012 new_ifaces.Add (imp);
2015 Type [] ret = new Type [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 Type [] GetInterfaces (Type t)
2029 Type [] cached = iface_cache [t] as Type [];
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 Type [] base_ifaces;
2049 if (t.BaseType == null)
2050 base_ifaces = NoTypes;
2052 base_ifaces = GetInterfaces (t.BaseType);
2053 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
2054 if (type_ifaces == null)
2055 type_ifaces = NoTypes;
2057 int base_count = base_ifaces.Length;
2058 Type [] result = new Type [base_count + type_ifaces.Length];
2059 base_ifaces.CopyTo (result, 0);
2060 type_ifaces.CopyTo (result, base_count);
2062 iface_cache [t] = result;
2065 Type[] ifaces = t.GetInterfaces ();
2066 iface_cache [t] = ifaces;
2072 // gets the interfaces that are declared explicitly on t
2074 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2076 return (Type []) builder_to_ifaces [t];
2080 /// The following is used to check if a given type implements an interface.
2081 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2083 public static bool ImplementsInterface (Type t, Type iface)
2088 // FIXME OPTIMIZATION:
2089 // as soon as we hit a non-TypeBuiler in the interface
2090 // chain, we could return, as the `Type.GetInterfaces'
2091 // will return all the interfaces implement by the type
2095 interfaces = GetInterfaces (t);
2097 if (interfaces != null){
2098 foreach (Type i in interfaces){
2105 } while (t != null);
2110 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2112 // This is a custom version of Convert.ChangeType() which works
2113 // with the TypeBuilder defined types when compiling corlib.
2114 public static object ChangeType (object value, Type conversionType, out bool error)
2116 IConvertible convert_value = value as IConvertible;
2118 if (convert_value == null){
2124 // We must use Type.Equals() here since `conversionType' is
2125 // the TypeBuilder created version of a system type and not
2126 // the system type itself. You cannot use Type.GetTypeCode()
2127 // on such a type - it'd always return TypeCode.Object.
2131 if (conversionType.Equals (typeof (Boolean)))
2132 return (object)(convert_value.ToBoolean (nf_provider));
2133 else if (conversionType.Equals (typeof (Byte)))
2134 return (object)(convert_value.ToByte (nf_provider));
2135 else if (conversionType.Equals (typeof (Char)))
2136 return (object)(convert_value.ToChar (nf_provider));
2137 else if (conversionType.Equals (typeof (DateTime)))
2138 return (object)(convert_value.ToDateTime (nf_provider));
2139 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2140 return (object)(convert_value.ToDecimal (nf_provider));
2141 else if (conversionType.Equals (typeof (Double)))
2142 return (object)(convert_value.ToDouble (nf_provider));
2143 else if (conversionType.Equals (typeof (Int16)))
2144 return (object)(convert_value.ToInt16 (nf_provider));
2145 else if (conversionType.Equals (typeof (Int32)))
2146 return (object)(convert_value.ToInt32 (nf_provider));
2147 else if (conversionType.Equals (typeof (Int64)))
2148 return (object)(convert_value.ToInt64 (nf_provider));
2149 else if (conversionType.Equals (typeof (SByte)))
2150 return (object)(convert_value.ToSByte (nf_provider));
2151 else if (conversionType.Equals (typeof (Single)))
2152 return (object)(convert_value.ToSingle (nf_provider));
2153 else if (conversionType.Equals (typeof (String)))
2154 return (object)(convert_value.ToString (nf_provider));
2155 else if (conversionType.Equals (typeof (UInt16)))
2156 return (object)(convert_value.ToUInt16 (nf_provider));
2157 else if (conversionType.Equals (typeof (UInt32)))
2158 return (object)(convert_value.ToUInt32 (nf_provider));
2159 else if (conversionType.Equals (typeof (UInt64)))
2160 return (object)(convert_value.ToUInt64 (nf_provider));
2161 else if (conversionType.Equals (typeof (Object)))
2162 return (object)(value);
2172 // This is needed, because enumerations from assemblies
2173 // do not report their underlyingtype, but they report
2176 public static Type EnumToUnderlying (Type t)
2178 if (t == TypeManager.enum_type)
2181 t = t.UnderlyingSystemType;
2182 if (!TypeManager.IsEnumType (t))
2185 if (t is TypeBuilder) {
2186 // slow path needed to compile corlib
2187 if (t == TypeManager.bool_type ||
2188 t == TypeManager.byte_type ||
2189 t == TypeManager.sbyte_type ||
2190 t == TypeManager.char_type ||
2191 t == TypeManager.short_type ||
2192 t == TypeManager.ushort_type ||
2193 t == TypeManager.int32_type ||
2194 t == TypeManager.uint32_type ||
2195 t == TypeManager.int64_type ||
2196 t == TypeManager.uint64_type)
2198 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2200 TypeCode tc = Type.GetTypeCode (t);
2203 case TypeCode.Boolean:
2204 return TypeManager.bool_type;
2206 return TypeManager.byte_type;
2207 case TypeCode.SByte:
2208 return TypeManager.sbyte_type;
2210 return TypeManager.char_type;
2211 case TypeCode.Int16:
2212 return TypeManager.short_type;
2213 case TypeCode.UInt16:
2214 return TypeManager.ushort_type;
2215 case TypeCode.Int32:
2216 return TypeManager.int32_type;
2217 case TypeCode.UInt32:
2218 return TypeManager.uint32_type;
2219 case TypeCode.Int64:
2220 return TypeManager.int64_type;
2221 case TypeCode.UInt64:
2222 return TypeManager.uint64_type;
2224 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2228 // When compiling corlib and called with one of the core types, return
2229 // the corresponding typebuilder for that type.
2231 public static Type TypeToCoreType (Type t)
2233 if (RootContext.StdLib || (t is TypeBuilder))
2236 TypeCode tc = Type.GetTypeCode (t);
2239 case TypeCode.Boolean:
2240 return TypeManager.bool_type;
2242 return TypeManager.byte_type;
2243 case TypeCode.SByte:
2244 return TypeManager.sbyte_type;
2246 return TypeManager.char_type;
2247 case TypeCode.Int16:
2248 return TypeManager.short_type;
2249 case TypeCode.UInt16:
2250 return TypeManager.ushort_type;
2251 case TypeCode.Int32:
2252 return TypeManager.int32_type;
2253 case TypeCode.UInt32:
2254 return TypeManager.uint32_type;
2255 case TypeCode.Int64:
2256 return TypeManager.int64_type;
2257 case TypeCode.UInt64:
2258 return TypeManager.uint64_type;
2259 case TypeCode.Single:
2260 return TypeManager.float_type;
2261 case TypeCode.Double:
2262 return TypeManager.double_type;
2263 case TypeCode.String:
2264 return TypeManager.string_type;
2265 case TypeCode.Decimal:
2266 return TypeManager.decimal_type;
2268 if (t == typeof (void))
2269 return TypeManager.void_type;
2270 if (t == typeof (object))
2271 return TypeManager.object_type;
2272 if (t == typeof (System.Type))
2273 return TypeManager.type_type;
2274 if (t == typeof (System.IntPtr))
2275 return TypeManager.intptr_type;
2281 /// Utility function that can be used to probe whether a type
2282 /// is managed or not.
2284 public static bool VerifyUnManaged (Type t, Location loc)
2286 if (t.IsValueType || t.IsPointer){
2288 // FIXME: this is more complex, we actually need to
2289 // make sure that the type does not contain any
2295 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2296 // We need this explicit check here to make it work when
2297 // compiling corlib.
2302 "Cannot take the address or size of a variable of a managed type ('" +
2303 CSharpName (t) + "')");
2308 /// Returns the name of the indexer in a given type.
2311 /// The default is not always `Item'. The user can change this behaviour by
2312 /// using the IndexerNameAttribute in the container.
2313 /// For example, the String class indexer is named `Chars' not `Item'
2315 public static string IndexerPropertyName (Type t)
2317 if (t is TypeBuilder) {
2318 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2319 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2322 System.Attribute attr = System.Attribute.GetCustomAttribute (
2323 t, TypeManager.default_member_type);
2325 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2326 return dma.MemberName;
2329 return TypeContainer.DefaultIndexerName;
2332 static MethodInfo declare_local_method = null;
2334 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2336 if (declare_local_method == null){
2337 declare_local_method = typeof (ILGenerator).GetMethod (
2339 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2341 new Type [] { typeof (Type), typeof (bool)},
2343 if (declare_local_method == null){
2344 Report.Warning (-24, new Location (-1),
2345 "This version of the runtime does not support making pinned local variables. " +
2346 "This code may cause errors on a runtime with a moving GC");
2347 return ig.DeclareLocal (t);
2350 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2354 // Returns whether the array of memberinfos contains the given method
2356 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2358 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2360 foreach (MethodBase method in array) {
2361 if (method.Name != new_method.Name)
2364 if (method is MethodInfo && new_method is MethodInfo)
2365 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2369 Type [] old_args = TypeManager.GetArgumentTypes (method);
2370 int old_count = old_args.Length;
2373 if (new_args.Length != old_count)
2376 for (i = 0; i < old_count; i++){
2377 if (old_args [i] != new_args [i])
2390 // We copy methods from `new_members' into `target_list' if the signature
2391 // for the method from in the new list does not exist in the target_list
2393 // The name is assumed to be the same.
2395 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2397 if (target_list == null){
2398 target_list = new ArrayList ();
2400 foreach (MemberInfo mi in new_members){
2401 if (mi is MethodBase)
2402 target_list.Add (mi);
2407 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2408 target_list.CopyTo (target_array, 0);
2410 foreach (MemberInfo mi in new_members){
2411 MethodBase new_method = (MethodBase) mi;
2413 if (!ArrayContainsMethod (target_array, new_method))
2414 target_list.Add (new_method);
2420 #region MemberLookup implementation
2423 // Whether we allow private members in the result (since FindMembers
2424 // uses NonPublic for both protected and private), we need to distinguish.
2427 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2432 internal class Closure {
2433 internal bool private_ok;
2435 // Who is invoking us and which type is being queried currently.
2436 internal Type invocation_type;
2437 internal Type qualifier_type;
2439 // The assembly that defines the type is that is calling us
2440 internal Assembly invocation_assembly;
2441 internal IList almost_match;
2443 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2445 if (invocation_type == null)
2448 Debug.Assert (IsNestedFamilyAccessible (invocation_type, m.DeclaringType));
2453 // A nested class has access to all the protected members visible to its parent.
2454 if (qualifier_type != null
2455 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2458 if (invocation_type == m.DeclaringType
2459 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2460 // Although a derived class can access protected members of its base class
2461 // it cannot do so through an instance of the base class (CS1540).
2462 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2463 if (qualifier_type == null
2464 || qualifier_type == invocation_type
2465 || qualifier_type.IsSubclassOf (invocation_type))
2469 if (almost_match != null)
2470 almost_match.Add (m);
2475 // This filter filters by name + whether it is ok to include private
2476 // members in the search
2478 internal bool Filter (MemberInfo m, object filter_criteria)
2481 // Hack: we know that the filter criteria will always be in the `closure'
2485 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2488 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2489 (m.DeclaringType == invocation_type))
2493 // Ugly: we need to find out the type of `m', and depending
2494 // on this, tell whether we accept or not
2496 if (m is MethodBase){
2497 MethodBase mb = (MethodBase) m;
2498 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2500 if (ma == MethodAttributes.Private)
2501 return private_ok || (invocation_type == m.DeclaringType) ||
2502 IsNestedChildOf (invocation_type, m.DeclaringType);
2504 // Assembly succeeds if we're in the same assembly.
2505 if (ma == MethodAttributes.Assembly)
2506 return (invocation_assembly == mb.DeclaringType.Assembly);
2508 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2509 if (ma == MethodAttributes.FamANDAssem){
2510 if (invocation_assembly != mb.DeclaringType.Assembly)
2514 // Family and FamANDAssem require that we derive.
2515 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem))
2516 return CheckValidFamilyAccess (mb.IsStatic, m);
2522 if (m is FieldInfo){
2523 FieldInfo fi = (FieldInfo) m;
2524 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2526 if (fa == FieldAttributes.Private)
2527 return private_ok || (invocation_type == m.DeclaringType) ||
2528 IsNestedChildOf (invocation_type, m.DeclaringType);
2530 // Assembly succeeds if we're in the same assembly.
2531 if (fa == FieldAttributes.Assembly)
2532 return (invocation_assembly == fi.DeclaringType.Assembly);
2534 // FamAndAssem requires that we not only derive, but we are on the same assembly.
2535 if (fa == FieldAttributes.FamANDAssem){
2536 if (invocation_assembly != fi.DeclaringType.Assembly)
2540 // Family and FamANDAssem require that we derive.
2541 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem))
2542 return CheckValidFamilyAccess (fi.IsStatic, m);
2549 // EventInfos and PropertyInfos, return true because they lack permission
2550 // information, so we need to check later on the methods.
2556 static Closure closure = new Closure ();
2557 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2560 // Looks up a member called `name' in the `queried_type'. This lookup
2561 // is done by code that is contained in the definition for `invocation_type'
2562 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2564 // `invocation_type' is used to check whether we're allowed to access the requested
2565 // member wrt its protection level.
2567 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2568 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2569 // is B and qualifier_type is A). This is used to do the CS1540 check.
2571 // When resolving a SimpleName, `qualifier_type' is null.
2573 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2574 // the same than `queried_type' - except when we're being called from BaseAccess;
2575 // in this case, `invocation_type' is the current type and `queried_type' the base
2576 // type, so this'd normally trigger a CS1540.
2578 // The binding flags are `bf' and the kind of members being looked up are `mt'
2580 // The return value always includes private members which code in `invocation_type'
2581 // is allowed to access (using the specified `qualifier_type' if given); only use
2582 // BindingFlags.NonPublic to bypass the permission check.
2584 // The 'almost_match' argument is used for reporting error CS1540.
2586 // Returns an array of a single element for everything but Methods/Constructors
2587 // that might return multiple matches.
2589 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2590 Type queried_type, MemberTypes mt,
2591 BindingFlags original_bf, string name, IList almost_match)
2593 Timer.StartTimer (TimerType.MemberLookup);
2595 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2596 queried_type, mt, original_bf, name, almost_match);
2598 Timer.StopTimer (TimerType.MemberLookup);
2603 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2604 Type queried_type, MemberTypes mt,
2605 BindingFlags original_bf, string name, IList almost_match)
2607 BindingFlags bf = original_bf;
2609 ArrayList method_list = null;
2610 Type current_type = queried_type;
2611 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2612 bool skip_iface_check = true, used_cache = false;
2613 bool always_ok_flag = false;
2615 closure.invocation_type = invocation_type;
2616 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2617 closure.qualifier_type = qualifier_type;
2618 closure.almost_match = almost_match;
2621 // If we are a nested class, we always have access to our container
2624 if (invocation_type != null){
2625 string invocation_name = invocation_type.FullName;
2626 if (invocation_name.IndexOf ('+') != -1){
2627 string container = queried_type.FullName + "+";
2628 int container_length = container.Length;
2630 if (invocation_name.Length > container_length){
2631 string shared = invocation_name.Substring (0, container_length);
2633 if (shared == container)
2634 always_ok_flag = true;
2639 // This is from the first time we find a method
2640 // in most cases, we do not actually find a method in the base class
2641 // so we can just ignore it, and save the arraylist allocation
2642 MemberInfo [] first_members_list = null;
2643 bool use_first_members_list = false;
2649 // `NonPublic' is lame, because it includes both protected and
2650 // private methods, so we need to control this behavior by
2651 // explicitly tracking if a private method is ok or not.
2653 // The possible cases are:
2654 // public, private and protected (internal does not come into the
2657 if ((invocation_type != null) &&
2658 ((invocation_type == current_type) ||
2659 IsNestedChildOf (invocation_type, current_type)) ||
2661 bf = original_bf | BindingFlags.NonPublic;
2665 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2667 Timer.StopTimer (TimerType.MemberLookup);
2669 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2671 Timer.StartTimer (TimerType.MemberLookup);
2674 // When queried for an interface type, the cache will automatically check all
2675 // inherited members, so we don't need to do this here. However, this only
2676 // works if we already used the cache in the first iteration of this loop.
2678 // If we used the cache in any further iteration, we can still terminate the
2679 // loop since the cache always looks in all base classes.
2685 skip_iface_check = false;
2687 if (current_type == TypeManager.object_type)
2690 current_type = current_type.BaseType;
2693 // This happens with interfaces, they have a null
2694 // basetype. Look members up in the Object class.
2696 if (current_type == null) {
2697 current_type = TypeManager.object_type;
2702 if (list.Length == 0)
2706 // Events and types are returned by both `static' and `instance'
2707 // searches, which means that our above FindMembers will
2708 // return two copies of the same.
2710 if (list.Length == 1 && !(list [0] is MethodBase)){
2715 // Multiple properties: we query those just to find out the indexer
2718 if (list [0] is PropertyInfo)
2722 // We found an event: the cache lookup returns both the event and
2723 // its private field.
2725 if (list [0] is EventInfo) {
2726 if ((list.Length == 2) && (list [1] is FieldInfo))
2727 return new MemberInfo [] { list [0] };
2734 // We found methods, turn the search into "method scan"
2738 if (first_members_list != null) {
2739 if (use_first_members_list) {
2740 method_list = CopyNewMethods (method_list, first_members_list);
2741 use_first_members_list = false;
2744 method_list = CopyNewMethods (method_list, list);
2746 first_members_list = list;
2747 use_first_members_list = true;
2748 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2750 } while (searching);
2752 if (use_first_members_list) {
2753 foreach (MemberInfo mi in first_members_list) {
2754 if (! (mi is MethodBase)) {
2755 method_list = CopyNewMethods (method_list, first_members_list);
2756 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2759 return (MemberInfo []) first_members_list;
2762 if (method_list != null && method_list.Count > 0)
2763 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2766 // This happens if we already used the cache in the first iteration, in this case
2767 // the cache already looked in all interfaces.
2769 if (skip_iface_check)
2773 // Interfaces do not list members they inherit, so we have to
2776 if (!queried_type.IsInterface)
2779 if (queried_type.IsArray)
2780 queried_type = TypeManager.array_type;
2782 Type [] ifaces = GetInterfaces (queried_type);
2786 foreach (Type itype in ifaces){
2789 x = MemberLookup (null, null, itype, mt, bf, name, null);
2797 // Tests whether external method is really special
2798 public static bool IsSpecialMethod (MethodBase mb)
2800 string name = mb.Name;
2801 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
2802 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
2804 if (name.StartsWith ("add_"))
2805 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
2807 if (name.StartsWith ("remove_"))
2808 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
2810 if (name.StartsWith ("op_")){
2811 foreach (string oname in Unary.oper_names) {
2816 foreach (string oname in Binary.oper_names) {
2829 /// There is exactly one instance of this class per type.
2831 public sealed class TypeHandle : IMemberContainer {
2832 public readonly TypeHandle BaseType;
2834 readonly int id = ++next_id;
2835 static int next_id = 0;
2838 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2839 /// a TypeHandle yet, a new instance of it is created. This static method
2840 /// ensures that we'll only have one TypeHandle instance per type.
2842 private static TypeHandle GetTypeHandle (Type t)
2844 TypeHandle handle = (TypeHandle) type_hash [t];
2848 handle = new TypeHandle (t);
2849 type_hash.Add (t, handle);
2853 public static MemberCache GetMemberCache (Type t)
2855 return GetTypeHandle (t).MemberCache;
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;
2899 private MemberCache base_cache;
2901 private TypeHandle (Type type)
2904 if (type.BaseType != null) {
2905 BaseType = GetTypeHandle (type.BaseType);
2906 base_cache = BaseType.MemberCache;
2907 } else if (type.IsInterface)
2908 base_cache = TypeManager.LookupBaseInterfacesCache (type);
2909 this.is_interface = type.IsInterface;
2910 this.member_cache = new MemberCache (this);
2913 // IMemberContainer methods
2915 public string Name {
2917 return type.FullName;
2927 public MemberCache BaseCache {
2933 public bool IsInterface {
2935 return is_interface;
2939 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2941 MemberInfo [] members;
2942 if (mt == MemberTypes.Event)
2943 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2945 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2947 Array.Reverse (members);
2949 return new MemberList (members);
2952 // IMemberFinder methods
2954 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2955 MemberFilter filter, object criteria)
2957 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
2960 public MemberCache MemberCache {
2962 return member_cache;
2966 public override string ToString ()
2968 if (BaseType != null)
2969 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2971 return "TypeHandle (" + id + "," + Name + ")";