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 attribute_type;
74 static public Type attribute_usage_type;
75 static public Type dllimport_type;
76 static public Type unverifiable_code_type;
77 static public Type methodimpl_attr_type;
78 static public Type marshal_as_attr_type;
79 static public Type new_constraint_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 activator_type;
86 static public Type invalid_operation_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 cls_compliant_attribute_type;
91 static public Type typed_reference_type;
92 static public Type arg_iterator_type;
93 static public Type mbr_type;
94 static public Type struct_layout_attribute_type;
95 static public Type field_offset_attribute_type;
98 // An empty array of types
100 static public Type [] NoTypes;
101 static public TypeExpr [] NoTypeExprs;
105 // Expressions representing the internal types. Used during declaration
108 static public TypeExpr system_object_expr, system_string_expr;
109 static public TypeExpr system_boolean_expr, system_decimal_expr;
110 static public TypeExpr system_single_expr, system_double_expr;
111 static public TypeExpr system_sbyte_expr, system_byte_expr;
112 static public TypeExpr system_int16_expr, system_uint16_expr;
113 static public TypeExpr system_int32_expr, system_uint32_expr;
114 static public TypeExpr system_int64_expr, system_uint64_expr;
115 static public TypeExpr system_char_expr, system_void_expr;
116 static public TypeExpr system_asynccallback_expr;
117 static public TypeExpr system_iasyncresult_expr;
118 static public TypeExpr system_valuetype_expr;
121 // This is only used when compiling corlib
123 static public Type system_int32_type;
124 static public Type system_array_type;
125 static public Type system_type_type;
126 static public Type system_assemblybuilder_type;
127 static public MethodInfo system_int_array_get_length;
128 static public MethodInfo system_int_array_get_rank;
129 static public MethodInfo system_object_array_clone;
130 static public MethodInfo system_int_array_get_length_int;
131 static public MethodInfo system_int_array_get_lower_bound_int;
132 static public MethodInfo system_int_array_get_upper_bound_int;
133 static public MethodInfo system_void_array_copyto_array_int;
137 // Internal, not really used outside
139 static Type runtime_helpers_type;
142 // These methods are called by code generated by the compiler
144 static public MethodInfo string_concat_string_string;
145 static public MethodInfo string_concat_string_string_string;
146 static public MethodInfo string_concat_string_string_string_string;
147 static public MethodInfo string_concat_string_dot_dot_dot;
148 static public MethodInfo string_concat_object_object;
149 static public MethodInfo string_concat_object_object_object;
150 static public MethodInfo string_concat_object_dot_dot_dot;
151 static public MethodInfo string_isinterneted_string;
152 static public MethodInfo system_type_get_type_from_handle;
153 static public MethodInfo object_getcurrent_void;
154 static public MethodInfo bool_movenext_void;
155 static public MethodInfo ienumerable_getenumerator_void;
156 static public MethodInfo void_reset_void;
157 static public MethodInfo void_dispose_void;
158 static public MethodInfo void_monitor_enter_object;
159 static public MethodInfo void_monitor_exit_object;
160 static public MethodInfo void_initializearray_array_fieldhandle;
161 static public MethodInfo int_getlength_int;
162 static public MethodInfo delegate_combine_delegate_delegate;
163 static public MethodInfo delegate_remove_delegate_delegate;
164 static public MethodInfo int_get_offset_to_string_data;
165 static public MethodInfo int_array_get_length;
166 static public MethodInfo int_array_get_rank;
167 static public MethodInfo object_array_clone;
168 static public MethodInfo int_array_get_length_int;
169 static public MethodInfo int_array_get_lower_bound_int;
170 static public MethodInfo int_array_get_upper_bound_int;
171 static public MethodInfo void_array_copyto_array_int;
172 static public MethodInfo activator_create_instance;
175 // The attribute constructors.
177 static public ConstructorInfo object_ctor;
178 static public ConstructorInfo cons_param_array_attribute;
179 static public ConstructorInfo void_decimal_ctor_five_args;
180 static public ConstructorInfo unverifiable_code_ctor;
181 static public ConstructorInfo invalid_operation_ctor;
184 // Holds the Array of Assemblies that have been loaded
185 // (either because it is the default or the user used the
186 // -r command line option)
188 static Assembly [] assemblies;
191 // Keeps a list of modules. We used this to do lookups
192 // on the module using GetType -- needed for arrays
194 static Module [] modules;
197 // This is the type_cache from the assemblies to avoid
198 // hitting System.Reflection on every lookup.
200 static Hashtable types;
203 // This is used to hotld the corresponding TypeContainer objects
204 // since we need this in FindMembers
206 static Hashtable typecontainers;
209 // Keeps track of those types that are defined by the
212 static ArrayList user_types;
214 static PtrHashtable builder_to_declspace;
217 // Tracks the interfaces implemented by typebuilders. We only
218 // enter those who do implement or or more interfaces
220 static PtrHashtable builder_to_ifaces;
223 // Tracks the generic parameters.
225 static PtrHashtable builder_to_type_param;
228 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
229 // the arguments to the method
231 static Hashtable method_arguments;
234 // Maps PropertyBuilder to a Type array that contains
235 // the arguments to the indexer
237 static Hashtable indexer_arguments;
240 // Maybe `method_arguments' should be replaced and only
241 // method_internal_params should be kept?
243 static Hashtable method_internal_params;
246 // Keeps track of methods
249 static Hashtable builder_to_method;
252 // Contains all public types from referenced assemblies.
253 // This member is used only if CLS Compliance verification is required.
255 public static Hashtable all_imported_types;
262 public static void CleanUp ()
264 // Lets get everything clean so that we can collect before generating code
268 typecontainers = null;
270 builder_to_declspace = null;
271 builder_to_ifaces = null;
272 method_arguments = null;
273 indexer_arguments = null;
274 method_internal_params = null;
275 builder_to_method = null;
276 builder_to_type_param = null;
280 negative_hits = null;
281 builder_to_constant = null;
282 fieldbuilders_to_fields = null;
284 priv_fields_events = null;
287 TypeHandle.CleanUp ();
291 /// A filter for Findmembers that uses the Signature object to
294 static bool SignatureFilter (MemberInfo mi, object criteria)
296 Signature sig = (Signature) criteria;
298 if (!(mi is MethodBase))
301 if (mi.Name != sig.name)
304 int count = sig.args.Length;
306 if (mi is MethodBuilder || mi is ConstructorBuilder){
307 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
309 if (candidate_args.Length != count)
312 for (int i = 0; i < count; i++)
313 if (candidate_args [i] != sig.args [i])
318 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
320 if (pars.Length != count)
323 for (int i = 0; i < count; i++)
324 if (pars [i].ParameterType != sig.args [i])
330 // A delegate that points to the filter above.
331 static MemberFilter signature_filter;
334 // These are expressions that represent some of the internal data types, used
337 static void InitExpressionTypes ()
339 system_object_expr = new TypeLookupExpression ("System.Object");
340 system_string_expr = new TypeLookupExpression ("System.String");
341 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
342 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
343 system_single_expr = new TypeLookupExpression ("System.Single");
344 system_double_expr = new TypeLookupExpression ("System.Double");
345 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
346 system_byte_expr = new TypeLookupExpression ("System.Byte");
347 system_int16_expr = new TypeLookupExpression ("System.Int16");
348 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
349 system_int32_expr = new TypeLookupExpression ("System.Int32");
350 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
351 system_int64_expr = new TypeLookupExpression ("System.Int64");
352 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
353 system_char_expr = new TypeLookupExpression ("System.Char");
354 system_void_expr = new TypeLookupExpression ("System.Void");
355 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
356 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
357 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
360 static TypeManager ()
362 assemblies = new Assembly [0];
364 user_types = new ArrayList ();
366 types = new Hashtable ();
367 typecontainers = new Hashtable ();
369 builder_to_declspace = new PtrHashtable ();
370 builder_to_method = new PtrHashtable ();
371 method_arguments = new PtrHashtable ();
372 method_internal_params = new PtrHashtable ();
373 indexer_arguments = new PtrHashtable ();
374 builder_to_ifaces = new PtrHashtable ();
375 builder_to_type_param = new PtrHashtable ();
377 NoTypes = new Type [0];
378 NoTypeExprs = new TypeExpr [0];
380 signature_filter = new MemberFilter (SignatureFilter);
381 InitExpressionTypes ();
384 public static void HandleDuplicate (string name, Type t)
386 Type prev = (Type) types [name];
387 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
391 // This probably never happens, as we catch this before
393 Report.Error (-17, "The type `" + name + "' has already been defined.");
397 tc = builder_to_declspace [t] as TypeContainer;
400 1595, "The type `" + name + "' is defined in an existing assembly;"+
401 " Using the new definition from: " + tc.Location);
404 1595, "The type `" + name + "' is defined in an existing assembly;");
407 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
413 public static void AddUserType (string name, TypeBuilder t, TypeExpr[] ifaces)
418 HandleDuplicate (name, t);
423 builder_to_ifaces [t] = ifaces;
427 // This entry point is used by types that we define under the covers
429 public static void RegisterBuilder (TypeBuilder tb, TypeExpr [] ifaces)
432 builder_to_ifaces [tb] = ifaces;
435 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, TypeExpr [] ifaces)
437 builder_to_declspace.Add (t, tc);
438 typecontainers.Add (name, tc);
439 AddUserType (name, t, ifaces);
442 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
447 HandleDuplicate (name, t);
450 builder_to_declspace.Add (t, del);
453 public static void AddEnumType (string name, TypeBuilder t, Enum en)
458 HandleDuplicate (name, t);
460 builder_to_declspace.Add (t, en);
463 public static void AddUserInterface (string name, TypeBuilder t, Interface i, TypeExpr [] ifaces)
465 AddUserType (name, t, ifaces);
466 builder_to_declspace.Add (t, i);
469 public static void AddMethod (MethodBase builder, IMethodData method)
471 builder_to_method.Add (builder, method);
474 public static IMethodData GetMethod (MethodBase builder)
476 return (IMethodData) builder_to_method [builder];
479 public static void AddTypeParameter (Type t, TypeParameter tparam, TypeExpr[] ifaces)
481 if (!builder_to_type_param.Contains (t)) {
482 builder_to_type_param.Add (t, tparam);
485 builder_to_ifaces [t] = ifaces;
490 /// Returns the DeclSpace whose Type is `t' or null if there is no
491 /// DeclSpace for `t' (ie, the Type comes from a library)
493 public static DeclSpace LookupDeclSpace (Type t)
495 return builder_to_declspace [t] as DeclSpace;
499 /// Returns the TypeContainer whose Type is `t' or null if there is no
500 /// TypeContainer for `t' (ie, the Type comes from a library)
502 public static TypeContainer LookupTypeContainer (Type t)
504 return builder_to_declspace [t] as TypeContainer;
507 public static IMemberContainer LookupMemberContainer (Type t)
509 if (t is TypeBuilder) {
510 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
511 if (container != null)
515 if (t is GenericTypeParameterBuilder) {
516 IMemberContainer container = builder_to_type_param [t] as IMemberContainer;
518 if (container != null)
522 return TypeHandle.GetTypeHandle (t);
525 public static Interface LookupInterface (Type t)
527 return builder_to_declspace [t] as Interface;
530 public static Delegate LookupDelegate (Type t)
532 return builder_to_declspace [t] as Delegate;
535 public static Enum LookupEnum (Type t)
537 return builder_to_declspace [t] as Enum;
540 public static Class LookupClass (Type t)
542 return (Class) builder_to_declspace [t];
545 public static TypeParameter LookupTypeParameter (Type t)
547 return (TypeParameter) builder_to_type_param [t];
550 public static bool HasConstructorConstraint (Type t)
552 if (!t.IsGenericParameter)
553 throw new InvalidOperationException ();
555 TypeParameter tparam = LookupTypeParameter (t);
557 return tparam.HasConstructorConstraint;
559 object[] attrs = t.GetCustomAttributes (
560 TypeManager.new_constraint_attr_type, false);
562 return attrs.Length > 0;
567 /// Registers an assembly to load types from.
569 public static void AddAssembly (Assembly a)
571 foreach (Assembly assembly in assemblies) {
576 int top = assemblies.Length;
577 Assembly [] n = new Assembly [top + 1];
579 assemblies.CopyTo (n, 0);
586 /// Registers a module builder to lookup types from
588 public static void AddModule (Module mb)
590 int top = modules != null ? modules.Length : 0;
591 Module [] n = new Module [top + 1];
594 modules.CopyTo (n, 0);
599 public static Module[] Modules {
605 static Hashtable references = new Hashtable ();
608 // Gets the reference to T version of the Type (T&)
610 public static Type GetReferenceType (Type t)
612 return t.MakeByRefType ();
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 t = LookupTypeReflection (name);
708 static readonly char [] dot_array = { '.' };
711 /// Returns the Type associated with @name, takes care of the fact that
712 /// reflection expects nested types to be separated from the main type
713 /// with a "+" instead of a "."
715 public static Type LookupType (string name)
720 // First lookup in user defined and cached values
723 t = (Type) types [name];
727 // Two thirds of the failures are caught here.
728 if (negative_hits.Contains (name))
731 // Sadly, split takes a param array, so this ends up allocating *EVERY TIME*
732 string [] elements = name.Split (dot_array);
733 int count = elements.Length;
735 for (int n = 1; n <= count; n++){
736 string top_level_type = String.Join (".", elements, 0, n);
738 // One third of the failures are caught here.
739 if (negative_hits.Contains (top_level_type))
742 t = (Type) types [top_level_type];
744 t = LookupTypeReflection (top_level_type);
746 negative_hits [top_level_type] = null;
757 // We know that System.Object does not have children, and since its the parent of
758 // all the objects, it always gets probbed for inner classes.
760 if (top_level_type == "System.Object")
763 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
764 //Console.WriteLine ("Looking up: " + newt + " " + name);
765 t = LookupTypeReflection (newt);
767 negative_hits [name] = null;
772 negative_hits [name] = null;
777 /// Computes the namespaces that we import from the assemblies we reference.
779 public static void ComputeNamespaces ()
781 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
784 // First add the assembly namespaces
786 if (assembly_get_namespaces != null){
787 int count = assemblies.Length;
789 for (int i = 0; i < count; i++){
790 Assembly a = assemblies [i];
791 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
792 foreach (string ns in namespaces){
795 Namespace.LookupNamespace (ns, true);
799 Hashtable cache = new Hashtable ();
800 cache.Add ("", null);
801 foreach (Assembly a in assemblies) {
802 foreach (Type t in a.GetExportedTypes ()) {
803 string ns = t.Namespace;
804 if (ns == null || cache.Contains (ns))
807 Namespace.LookupNamespace (ns, true);
808 cache.Add (ns, null);
815 /// Fills static table with exported types from all referenced assemblies.
816 /// This information is required for CLS Compliance tests.
818 public static void LoadAllImportedTypes ()
820 if (!CodeGen.Assembly.IsClsCompliant)
823 all_imported_types = new Hashtable ();
824 foreach (Assembly a in assemblies) {
825 foreach (Type t in a.GetExportedTypes ()) {
826 all_imported_types [t.FullName] = t;
831 public static bool NamespaceClash (string name, Location loc)
833 if (Namespace.LookupNamespace (name, false) == null)
836 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
841 /// Returns the C# name of a type if possible, or the full type name otherwise
843 static public string CSharpName (Type t)
845 if (t.FullName == null)
848 return Regex.Replace (t.FullName,
850 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
851 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
852 @"Boolean|String|Void)" +
854 new MatchEvaluator (CSharpNameMatch));
857 static String CSharpNameMatch (Match match)
859 string s = match.Groups [1].Captures [0].Value;
861 Replace ("int32", "int").
862 Replace ("uint32", "uint").
863 Replace ("int16", "short").
864 Replace ("uint16", "ushort").
865 Replace ("int64", "long").
866 Replace ("uint64", "ulong").
867 Replace ("single", "float").
868 Replace ("boolean", "bool")
869 + match.Groups [2].Captures [0].Value;
873 /// Returns the signature of the method with full namespace classification
875 static public string GetFullNameSignature (MemberInfo mi)
877 return mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
880 static public string GetFullNameSignature (MethodBase mb)
882 string name = mb.Name;
884 name = mb.DeclaringType.Name;
886 if (mb.IsSpecialName) {
887 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
888 name = name.Remove (0, 4);
895 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
898 static public string GetFullName (Type t)
900 if (t.FullName == null)
903 string name = t.FullName.Replace ('+', '.');
905 DeclSpace tc = LookupDeclSpace (t);
906 if ((tc != null) && tc.IsGeneric) {
907 TypeParameter[] tparam = tc.TypeParameters;
909 StringBuilder sb = new StringBuilder (name);
911 for (int i = 0; i < tparam.Length; i++) {
914 sb.Append (tparam [i].Name);
917 return sb.ToString ();
918 } else if (t.HasGenericArguments && !t.IsGenericInstance) {
919 Type[] tparam = t.GetGenericArguments ();
921 StringBuilder sb = new StringBuilder (name);
923 for (int i = 0; i < tparam.Length; i++) {
926 sb.Append (tparam [i].Name);
929 return sb.ToString ();
936 /// Returns the signature of the property and indexer
938 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
941 return GetFullNameSignature (pb);
944 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
945 string signature = GetFullNameSignature (mb);
946 string arg = TypeManager.LookupParametersByBuilder (mb).ParameterDesc (0);
947 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
951 /// Returns the signature of the method
953 static public string CSharpSignature (MethodBase mb)
955 StringBuilder sig = new StringBuilder ("(");
958 // FIXME: We should really have a single function to do
959 // everything instead of the following 5 line pattern
961 ParameterData iparams = LookupParametersByBuilder (mb);
964 iparams = new ReflectionParameters (mb);
967 if (mb.IsSpecialName && iparams.Count == 0)
968 return GetFullNameSignature (mb);
970 for (int i = 0; i < iparams.Count; i++) {
974 sig.Append (iparams.ParameterDesc (i));
979 if (mb.IsSpecialName && iparams.Count == 1) {
980 sig.Replace ('(', '[');
981 sig.Replace (')', ']');
984 return GetFullNameSignature (mb) + sig.ToString ();
988 /// Looks up a type, and aborts if it is not found. This is used
989 /// by types required by the compiler
991 static Type CoreLookupType (string name)
993 Type t = LookupTypeDirect (name);
996 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
997 Environment.Exit (1);
1004 /// Returns the MethodInfo for a method named `name' defined
1005 /// in type `t' which takes arguments of types `args'
1007 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
1011 BindingFlags flags = instance_and_static | BindingFlags.Public;
1017 flags |= BindingFlags.NonPublic;
1019 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
1020 if (list.Count == 0) {
1022 Report.Error (-19, "Can not find the core function `" + name + "'");
1026 MethodInfo mi = list [0] as MethodInfo;
1029 Report.Error (-19, "Can not find the core function `" + name + "'");
1036 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
1038 return GetMethod (t, name, args, false, report_errors);
1041 static MethodInfo GetMethod (Type t, string name, Type [] args)
1043 return GetMethod (t, name, args, true);
1048 /// Returns the ConstructorInfo for "args"
1050 static ConstructorInfo GetConstructor (Type t, Type [] args)
1058 list = FindMembers (t, MemberTypes.Constructor,
1059 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1060 signature_filter, sig);
1061 if (list.Count == 0){
1062 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1066 ConstructorInfo ci = list [0] as ConstructorInfo;
1068 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1075 public static void InitEnumUnderlyingTypes ()
1078 int32_type = CoreLookupType ("System.Int32");
1079 int64_type = CoreLookupType ("System.Int64");
1080 uint32_type = CoreLookupType ("System.UInt32");
1081 uint64_type = CoreLookupType ("System.UInt64");
1082 byte_type = CoreLookupType ("System.Byte");
1083 sbyte_type = CoreLookupType ("System.SByte");
1084 short_type = CoreLookupType ("System.Int16");
1085 ushort_type = CoreLookupType ("System.UInt16");
1089 /// The types have to be initialized after the initial
1090 /// population of the type has happened (for example, to
1091 /// bootstrap the corlib.dll
1093 public static void InitCoreTypes ()
1095 object_type = CoreLookupType ("System.Object");
1096 value_type = CoreLookupType ("System.ValueType");
1098 InitEnumUnderlyingTypes ();
1100 char_type = CoreLookupType ("System.Char");
1101 string_type = CoreLookupType ("System.String");
1102 float_type = CoreLookupType ("System.Single");
1103 double_type = CoreLookupType ("System.Double");
1104 char_ptr_type = CoreLookupType ("System.Char*");
1105 decimal_type = CoreLookupType ("System.Decimal");
1106 bool_type = CoreLookupType ("System.Boolean");
1107 enum_type = CoreLookupType ("System.Enum");
1109 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1110 delegate_type = CoreLookupType ("System.Delegate");
1112 array_type = CoreLookupType ("System.Array");
1113 void_type = CoreLookupType ("System.Void");
1114 type_type = CoreLookupType ("System.Type");
1116 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1117 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1118 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1119 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1120 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1121 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1122 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1123 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1124 idisposable_type = CoreLookupType ("System.IDisposable");
1125 icloneable_type = CoreLookupType ("System.ICloneable");
1126 iconvertible_type = CoreLookupType ("System.IConvertible");
1127 monitor_type = CoreLookupType ("System.Threading.Monitor");
1128 intptr_type = CoreLookupType ("System.IntPtr");
1130 attribute_type = CoreLookupType ("System.Attribute");
1131 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1132 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1133 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1134 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1135 new_constraint_attr_type = CoreLookupType ("System.Runtime.CompilerServices.NewConstraintAttribute");
1136 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1137 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1138 typed_reference_type = CoreLookupType ("System.TypedReference");
1139 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1140 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1143 // Sigh. Remove this before the release. Wonder what versions of Mono
1144 // people are running.
1146 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1148 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1150 void_ptr_type = CoreLookupType ("System.Void*");
1152 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1154 exception_type = CoreLookupType ("System.Exception");
1155 activator_type = CoreLookupType ("System.Activator");
1156 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1161 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1162 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1163 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1164 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1165 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1168 // When compiling corlib, store the "real" types here.
1170 if (!RootContext.StdLib) {
1171 system_int32_type = typeof (System.Int32);
1172 system_array_type = typeof (System.Array);
1173 system_type_type = typeof (System.Type);
1174 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1176 Type [] void_arg = { };
1177 system_int_array_get_length = GetMethod (
1178 system_array_type, "get_Length", void_arg);
1179 system_int_array_get_rank = GetMethod (
1180 system_array_type, "get_Rank", void_arg);
1181 system_object_array_clone = GetMethod (
1182 system_array_type, "Clone", void_arg);
1184 Type [] system_int_arg = { system_int32_type };
1185 system_int_array_get_length_int = GetMethod (
1186 system_array_type, "GetLength", system_int_arg);
1187 system_int_array_get_upper_bound_int = GetMethod (
1188 system_array_type, "GetUpperBound", system_int_arg);
1189 system_int_array_get_lower_bound_int = GetMethod (
1190 system_array_type, "GetLowerBound", system_int_arg);
1192 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1193 system_void_array_copyto_array_int = GetMethod (
1194 system_array_type, "CopyTo", system_array_int_arg);
1196 Type [] system_3_type_arg = {
1197 system_type_type, system_type_type, system_type_type };
1198 Type [] system_4_type_arg = {
1199 system_type_type, system_type_type, system_type_type, system_type_type };
1201 MethodInfo set_corlib_type_builders = GetMethod (
1202 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1203 system_4_type_arg, true, false);
1205 if (set_corlib_type_builders != null) {
1206 object[] args = new object [4];
1207 args [0] = object_type;
1208 args [1] = value_type;
1209 args [2] = enum_type;
1210 args [3] = void_type;
1212 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1214 // Compatibility for an older version of the class libs.
1215 set_corlib_type_builders = GetMethod (
1216 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1217 system_3_type_arg, true, true);
1219 if (set_corlib_type_builders == null) {
1220 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1224 object[] args = new object [3];
1225 args [0] = object_type;
1226 args [1] = value_type;
1227 args [2] = enum_type;
1229 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1233 system_object_expr.Type = object_type;
1234 system_string_expr.Type = string_type;
1235 system_boolean_expr.Type = bool_type;
1236 system_decimal_expr.Type = decimal_type;
1237 system_single_expr.Type = float_type;
1238 system_double_expr.Type = double_type;
1239 system_sbyte_expr.Type = sbyte_type;
1240 system_byte_expr.Type = byte_type;
1241 system_int16_expr.Type = short_type;
1242 system_uint16_expr.Type = ushort_type;
1243 system_int32_expr.Type = int32_type;
1244 system_uint32_expr.Type = uint32_type;
1245 system_int64_expr.Type = int64_type;
1246 system_uint64_expr.Type = uint64_type;
1247 system_char_expr.Type = char_type;
1248 system_void_expr.Type = void_type;
1249 system_asynccallback_expr.Type = asynccallback_type;
1250 system_iasyncresult_expr.Type = iasyncresult_type;
1251 system_valuetype_expr.Type = value_type;
1255 // The helper methods that are used by the compiler
1257 public static void InitCodeHelpers ()
1260 // Now load the default methods that we use.
1262 Type [] string_string = { string_type, string_type };
1263 string_concat_string_string = GetMethod (
1264 string_type, "Concat", string_string);
1265 Type [] string_string_string = { string_type, string_type, string_type };
1266 string_concat_string_string_string = GetMethod (
1267 string_type, "Concat", string_string_string);
1268 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1269 string_concat_string_string_string_string = GetMethod (
1270 string_type, "Concat", string_string_string_string);
1271 Type[] params_string = { TypeManager.LookupType ("System.String[]") };
1272 string_concat_string_dot_dot_dot = GetMethod (
1273 string_type, "Concat", params_string);
1275 Type [] object_object = { object_type, object_type };
1276 string_concat_object_object = GetMethod (
1277 string_type, "Concat", object_object);
1278 Type [] object_object_object = { object_type, object_type, object_type };
1279 string_concat_object_object_object = GetMethod (
1280 string_type, "Concat", object_object_object);
1281 Type[] params_object = { TypeManager.LookupType ("System.Object[]") };
1282 string_concat_object_dot_dot_dot = GetMethod (
1283 string_type, "Concat", params_object);
1285 Type [] string_ = { string_type };
1286 string_isinterneted_string = GetMethod (
1287 string_type, "IsInterned", string_);
1289 Type [] runtime_type_handle = { runtime_handle_type };
1290 system_type_get_type_from_handle = GetMethod (
1291 type_type, "GetTypeFromHandle", runtime_type_handle);
1293 Type [] delegate_delegate = { delegate_type, delegate_type };
1294 delegate_combine_delegate_delegate = GetMethod (
1295 delegate_type, "Combine", delegate_delegate);
1297 delegate_remove_delegate_delegate = GetMethod (
1298 delegate_type, "Remove", delegate_delegate);
1303 Type [] void_arg = { };
1304 object_getcurrent_void = GetMethod (
1305 ienumerator_type, "get_Current", void_arg);
1306 bool_movenext_void = GetMethod (
1307 ienumerator_type, "MoveNext", void_arg);
1308 void_reset_void = GetMethod (
1309 ienumerator_type, "Reset", void_arg);
1310 void_dispose_void = GetMethod (
1311 idisposable_type, "Dispose", void_arg);
1312 int_get_offset_to_string_data = GetMethod (
1313 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1314 int_array_get_length = GetMethod (
1315 array_type, "get_Length", void_arg);
1316 int_array_get_rank = GetMethod (
1317 array_type, "get_Rank", void_arg);
1318 ienumerable_getenumerator_void = GetMethod (
1319 ienumerable_type, "GetEnumerator", void_arg);
1324 Type [] int_arg = { int32_type };
1325 int_array_get_length_int = GetMethod (
1326 array_type, "GetLength", int_arg);
1327 int_array_get_upper_bound_int = GetMethod (
1328 array_type, "GetUpperBound", int_arg);
1329 int_array_get_lower_bound_int = GetMethod (
1330 array_type, "GetLowerBound", int_arg);
1333 // System.Array methods
1335 object_array_clone = GetMethod (
1336 array_type, "Clone", void_arg);
1337 Type [] array_int_arg = { array_type, int32_type };
1338 void_array_copyto_array_int = GetMethod (
1339 array_type, "CopyTo", array_int_arg);
1344 Type [] object_arg = { object_type };
1345 void_monitor_enter_object = GetMethod (
1346 monitor_type, "Enter", object_arg);
1347 void_monitor_exit_object = GetMethod (
1348 monitor_type, "Exit", object_arg);
1350 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1352 void_initializearray_array_fieldhandle = GetMethod (
1353 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1358 int_getlength_int = GetMethod (
1359 array_type, "GetLength", int_arg);
1362 // Decimal constructors
1364 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1365 void_decimal_ctor_five_args = GetConstructor (
1366 decimal_type, dec_arg);
1371 cons_param_array_attribute = GetConstructor (
1372 param_array_type, void_arg);
1374 unverifiable_code_ctor = GetConstructor (
1375 unverifiable_code_type, void_arg);
1378 // InvalidOperationException
1380 invalid_operation_ctor = GetConstructor (
1381 invalid_operation_exception_type, void_arg);
1385 object_ctor = GetConstructor (object_type, void_arg);
1388 Type [] type_arg = { type_type };
1389 activator_create_instance = GetMethod (
1390 activator_type, "CreateInstance", type_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);
1508 return (MemberInfo []) list;
1511 if (t is GenericTypeParameterBuilder) {
1512 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1515 Timer.StartTimer (TimerType.FindMembers);
1516 list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1517 FilterWithClosure_delegate, name);
1518 Timer.StopTimer (TimerType.FindMembers);
1520 return (MemberInfo []) list;
1524 // This call will always succeed. There is exactly one TypeHandle instance per
1525 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1526 // if it didn't already exist.
1528 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1531 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1534 public static bool IsBuiltinType (Type t)
1536 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1537 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1538 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1539 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1545 public static bool IsBuiltinType (TypeContainer tc)
1547 return IsBuiltinType (tc.TypeBuilder);
1551 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1552 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1554 public static bool IsCLRType (Type t)
1556 if (t == object_type || t == int32_type || t == uint32_type ||
1557 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1558 t == char_type || t == short_type || t == bool_type ||
1559 t == sbyte_type || t == byte_type || t == ushort_type)
1565 public static bool IsDelegateType (Type t)
1567 if (t.IsGenericInstance)
1568 t = t.GetGenericTypeDefinition ();
1570 if (t.IsSubclassOf (TypeManager.delegate_type))
1576 public static bool IsEnumType (Type t)
1578 if (t == TypeManager.enum_type || t.IsSubclassOf (TypeManager.enum_type))
1583 public static bool IsBuiltinOrEnum (Type t)
1585 if (IsBuiltinType (t))
1595 // Only a quick hack to get things moving, while real runtime support appears
1597 public static bool IsGeneric (Type t)
1599 DeclSpace ds = (DeclSpace) builder_to_declspace [t];
1601 return ds.IsGeneric;
1604 public static bool HasGenericArguments (Type t)
1606 return GetNumberOfTypeArguments (t) > 0;
1609 public static int GetNumberOfTypeArguments (Type t)
1611 DeclSpace tc = LookupDeclSpace (t);
1613 return tc.IsGeneric ? tc.CountTypeParameters : 0;
1615 return t.HasGenericArguments ? t.GetGenericArguments ().Length : 0;
1618 public static Type[] GetTypeArguments (Type t)
1620 DeclSpace tc = LookupDeclSpace (t);
1623 throw new InvalidOperationException ();
1625 TypeParameter[] tparam = tc.TypeParameters;
1626 Type[] ret = new Type [tparam.Length];
1627 for (int i = 0; i < tparam.Length; i++) {
1628 ret [i] = tparam [i].Type;
1629 if (ret [i] == null)
1630 throw new InternalErrorException ();
1635 return t.GetGenericArguments ();
1639 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1641 public static bool IsUnmanagedType (Type t)
1643 if (IsBuiltinType (t) && t != TypeManager.string_type)
1652 if (IsValueType (t)){
1653 if (t is TypeBuilder){
1654 TypeContainer tc = LookupTypeContainer (t);
1656 if (tc.Fields != null){
1657 foreach (Field f in tc.Fields){
1658 if (f.FieldBuilder.IsStatic)
1660 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1666 FieldInfo [] fields = t.GetFields ();
1668 foreach (FieldInfo f in fields){
1671 if (!IsUnmanagedType (f.FieldType))
1681 public static bool IsValueType (Type t)
1683 return t.IsGenericParameter || t.IsValueType;
1686 public static bool IsInterfaceType (Type t)
1688 Interface iface = builder_to_declspace [t] as Interface;
1696 public static bool IsEqualGenericType (Type a, Type b)
1698 if ((a is TypeBuilder) && a.IsGenericTypeDefinition && b.IsGenericInstance) {
1700 // `a' is a generic type definition's TypeBuilder and `b' is a
1701 // generic instance of the same type.
1707 // void Test (Stack<T> stack) { }
1710 // The first argument of `Test' will be the generic instance
1711 // "Stack<!0>" - which is the same type than the "Stack" TypeBuilder.
1713 if (a != b.GetGenericTypeDefinition ())
1716 Type[] aparams = a.GetGenericArguments ();
1717 Type[] bparams = b.GetGenericArguments ();
1719 if (aparams.Length != bparams.Length)
1722 for (int i = 0; i < aparams.Length; i++)
1723 if (!aparams [i].Equals (bparams [i]))
1732 public static bool IsEqual (Type a, Type b)
1737 return IsEqualGenericType (a, b);
1740 public static bool MayBecomeEqualGenericTypes (Type a, Type b)
1742 if (a.IsGenericParameter) {
1744 // If a is an array of a's type, they may never
1748 b = b.GetElementType ();
1754 // If b is a generic parameter or an actual type,
1755 // they may become equal:
1757 // class X<T,U> : I<T>, I<U>
1758 // class X<T> : I<T>, I<float>
1760 if (b.IsGenericParameter || !b.IsGenericInstance)
1764 // We're now comparing a type parameter with a
1765 // generic instance. They may become equal unless
1766 // the type parameter appears anywhere in the
1767 // generic instance:
1769 // class X<T,U> : I<T>, I<X<U>>
1770 // -> error because you could instanciate it as
1773 // class X<T> : I<T>, I<X<T>> -> ok
1776 Type[] bargs = GetTypeArguments (b);
1777 for (int i = 0; i < bargs.Length; i++) {
1778 if (a.Equals (bargs [i]))
1785 if (b.IsGenericParameter)
1786 return MayBecomeEqualGenericTypes (b, a);
1789 // At this point, neither a nor b are a type parameter.
1791 // If one of them is a generic instance, let
1792 // MayBecomeEqualGenericInstances() compare them (if the
1793 // other one is not a generic instance, they can never
1797 if (a.IsGenericInstance || b.IsGenericInstance)
1798 return MayBecomeEqualGenericInstances (a, b);
1801 // If both of them are arrays.
1804 if (a.IsArray && b.IsArray) {
1805 if (a.GetArrayRank () != b.GetArrayRank ())
1808 a = a.GetElementType ();
1809 b = b.GetElementType ();
1811 return MayBecomeEqualGenericTypes (a, b);
1815 // Ok, two ordinary types.
1818 return a.Equals (b);
1822 // Checks whether two generic instances may become equal for some
1823 // particular instantiation (26.3.1).
1825 public static bool MayBecomeEqualGenericInstances (Type a, Type b)
1827 if (!a.IsGenericInstance || !b.IsGenericInstance)
1829 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
1832 Type[] aargs = GetTypeArguments (a);
1833 Type[] bargs = GetTypeArguments (b);
1835 if (aargs.Length != bargs.Length)
1838 for (int i = 0; i < aargs.Length; i++) {
1839 if (MayBecomeEqualGenericTypes (aargs [i], bargs [i]))
1846 public static bool IsSubclassOf (Type type, Type parent)
1848 if (type.IsGenericInstance && !parent.IsGenericInstance)
1849 type = type.GetGenericTypeDefinition ();
1851 return type.IsSubclassOf (parent);
1855 // Checks whether `type' is a subclass or nested child of `parent'.
1857 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1860 if ((type == parent) || type.IsSubclassOf (parent) ||
1861 IsEqualGenericType (type, parent))
1864 // Handle nested types.
1865 type = type.DeclaringType;
1866 } while (type != null);
1872 // Checks whether `type' is a nested child of `parent'.
1874 public static bool IsNestedChildOf (Type type, Type parent)
1879 type = type.DeclaringType;
1880 while (type != null) {
1884 type = type.DeclaringType;
1891 // Do the right thing when returning the element type of an
1892 // array type based on whether we are compiling corlib or not
1894 public static Type GetElementType (Type t)
1896 if (RootContext.StdLib)
1897 return t.GetElementType ();
1899 return TypeToCoreType (t.GetElementType ());
1903 /// Returns the User Defined Types
1905 public static ArrayList UserTypes {
1911 public static Hashtable TypeContainers {
1913 return typecontainers;
1917 static Hashtable builder_to_constant;
1919 public static void RegisterConstant (FieldBuilder fb, Const c)
1921 if (builder_to_constant == null)
1922 builder_to_constant = new PtrHashtable ();
1924 if (builder_to_constant.Contains (fb))
1927 builder_to_constant.Add (fb, c);
1930 public static Const LookupConstant (FieldBuilder fb)
1932 if (builder_to_constant == null)
1935 return (Const) builder_to_constant [fb];
1939 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1943 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1944 /// for anything which is dynamic, and we need this in a number of places,
1945 /// we register this information here, and use it afterwards.
1947 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1952 method_arguments.Add (mb, args);
1953 method_internal_params.Add (mb, ip);
1958 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1960 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1963 if (method_internal_params.Contains (mb))
1964 return (InternalParameters) method_internal_params [mb];
1966 throw new Exception ("Argument for Method not registered" + mb);
1970 /// Returns the argument types for a method based on its methodbase
1972 /// For dynamic methods, we use the compiler provided types, for
1973 /// methods from existing assemblies we load them from GetParameters,
1974 /// and insert them into the cache
1976 static public Type [] GetArgumentTypes (MethodBase mb)
1978 if (method_arguments.Contains (mb))
1979 return (Type []) method_arguments [mb];
1981 ParameterInfo [] pi = mb.GetParameters ();
1983 Type [] types = new Type [c];
1985 for (int i = 0; i < c; i++)
1986 types [i] = pi [i].ParameterType;
1988 method_arguments.Add (mb, types);
1994 /// Returns the argument types for an indexer based on its PropertyInfo
1996 /// For dynamic indexers, we use the compiler provided types, for
1997 /// indexers from existing assemblies we load them from GetParameters,
1998 /// and insert them into the cache
2000 static public Type [] GetArgumentTypes (PropertyInfo indexer)
2002 if (indexer_arguments.Contains (indexer))
2003 return (Type []) indexer_arguments [indexer];
2004 else if (indexer is PropertyBuilder)
2005 // If we're a PropertyBuilder and not in the
2006 // `indexer_arguments' hash, then we're a property and
2010 ParameterInfo [] pi = indexer.GetIndexParameters ();
2011 // Property, not an indexer.
2015 Type [] types = new Type [c];
2017 for (int i = 0; i < c; i++)
2018 types [i] = pi [i].ParameterType;
2020 indexer_arguments.Add (indexer, types);
2026 // This is a workaround the fact that GetValue is not
2027 // supported for dynamic types
2029 static Hashtable fields = new Hashtable ();
2030 static public bool RegisterFieldValue (FieldBuilder fb, object value)
2032 if (fields.Contains (fb))
2035 fields.Add (fb, value);
2040 static public object GetValue (FieldBuilder fb)
2045 static Hashtable fieldbuilders_to_fields = new Hashtable ();
2046 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
2048 if (fieldbuilders_to_fields.Contains (fb))
2051 fieldbuilders_to_fields.Add (fb, f);
2056 // The return value can be null; This will be the case for
2057 // auxiliary FieldBuilders created by the compiler that have no
2058 // real field being declared on the source code
2060 static public FieldBase GetField (FieldInfo fb)
2062 return (FieldBase) fieldbuilders_to_fields [fb];
2065 static Hashtable events;
2067 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
2070 events = new Hashtable ();
2072 if (events.Contains (eb))
2075 events.Add (eb, new Pair (add, remove));
2080 static public MethodInfo GetAddMethod (EventInfo ei)
2082 if (ei is MyEventBuilder) {
2083 Pair pair = (Pair) events [ei];
2085 return (MethodInfo) pair.First;
2087 return ei.GetAddMethod ();
2090 static public MethodInfo GetRemoveMethod (EventInfo ei)
2092 if (ei is MyEventBuilder) {
2093 Pair pair = (Pair) events [ei];
2095 return (MethodInfo) pair.Second;
2097 return ei.GetRemoveMethod ();
2100 static Hashtable priv_fields_events;
2102 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
2104 if (priv_fields_events == null)
2105 priv_fields_events = new Hashtable ();
2107 if (priv_fields_events.Contains (einfo))
2110 priv_fields_events.Add (einfo, builder);
2115 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
2117 if (priv_fields_events == null)
2120 return (MemberInfo) priv_fields_events [ei];
2123 static Hashtable properties;
2125 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
2127 if (properties == null)
2128 properties = new Hashtable ();
2130 if (properties.Contains (pb))
2133 properties.Add (pb, new Pair (get, set));
2138 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
2139 MethodBase set, Type[] args)
2141 if (!RegisterProperty (pb, get,set))
2144 indexer_arguments.Add (pb, args);
2149 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
2151 Hashtable hash = new Hashtable ();
2152 return CheckStructCycles (tc, seen, hash);
2155 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
2158 if (!(tc is Struct) || IsBuiltinType (tc))
2162 // `seen' contains all types we've already visited.
2164 if (seen.Contains (tc))
2166 seen.Add (tc, null);
2168 if (tc.Fields == null)
2171 foreach (Field field in tc.Fields) {
2172 if (field.FieldBuilder.IsStatic)
2175 Type ftype = field.FieldBuilder.FieldType;
2176 TypeContainer ftc = LookupTypeContainer (ftype);
2180 if (hash.Contains (ftc)) {
2181 Report.Error (523, tc.Location,
2182 "Struct member `{0}.{1}' of type `{2}' " +
2183 "causes a cycle in the struct layout",
2184 tc.Name, field.Name, ftc.Name);
2189 // `hash' contains all types in the current path.
2191 hash.Add (tc, null);
2193 bool ok = CheckStructCycles (ftc, seen, hash);
2200 if (!seen.Contains (ftc))
2201 seen.Add (ftc, null);
2208 /// Given an array of interface types, expand and eliminate repeated ocurrences
2209 /// of an interface.
2213 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2216 public static TypeExpr[] ExpandInterfaces (TypeExpr [] base_interfaces)
2218 ArrayList new_ifaces = new ArrayList ();
2220 foreach (TypeExpr iface in base_interfaces){
2221 if (!new_ifaces.Contains (iface))
2222 new_ifaces.Add (iface);
2224 TypeExpr [] implementing = iface.GetInterfaces ();
2226 foreach (TypeExpr imp in implementing){
2227 if (!new_ifaces.Contains (imp))
2228 new_ifaces.Add (imp);
2231 TypeExpr [] ret = new TypeExpr [new_ifaces.Count];
2232 new_ifaces.CopyTo (ret, 0);
2236 static PtrHashtable iface_cache = new PtrHashtable ();
2239 /// This function returns the interfaces in the type `t'. Works with
2240 /// both types and TypeBuilders.
2242 public static TypeExpr [] GetInterfaces (Type t)
2245 TypeExpr [] cached = iface_cache [t] as TypeExpr [];
2250 // The reason for catching the Array case is that Reflection.Emit
2251 // will not return a TypeBuilder for Array types of TypeBuilder types,
2252 // but will still throw an exception if we try to call GetInterfaces
2255 // Since the array interfaces are always constant, we return those for
2260 t = TypeManager.array_type;
2262 if (t is TypeBuilder){
2263 TypeExpr [] parent_ifaces;
2265 if (t.BaseType == null)
2266 parent_ifaces = NoTypeExprs;
2268 parent_ifaces = GetInterfaces (t.BaseType);
2269 TypeExpr [] type_ifaces = (TypeExpr []) builder_to_ifaces [t];
2270 if (type_ifaces == null)
2271 type_ifaces = NoTypeExprs;
2273 int parent_count = parent_ifaces.Length;
2274 TypeExpr [] result = new TypeExpr [parent_count + type_ifaces.Length];
2275 parent_ifaces.CopyTo (result, 0);
2276 type_ifaces.CopyTo (result, parent_count);
2278 iface_cache [t] = result;
2280 } else if (t is GenericTypeParameterBuilder){
2281 TypeExpr[] type_ifaces = (TypeExpr []) builder_to_ifaces [t];
2282 if (type_ifaces == null)
2283 type_ifaces = NoTypeExprs;
2285 iface_cache [t] = type_ifaces;
2288 Type [] ifaces = t.GetInterfaces ();
2289 if (ifaces.Length == 0)
2292 TypeExpr [] result = new TypeExpr [ifaces.Length];
2293 for (int i = 0; i < ifaces.Length; i++)
2294 result [i] = new TypeExpression (ifaces [i], Location.Null);
2296 iface_cache [t] = result;
2302 // gets the interfaces that are declared explicitly on t
2304 public static TypeExpr [] GetExplicitInterfaces (TypeBuilder t)
2306 return (TypeExpr []) builder_to_ifaces [t];
2310 /// The following is used to check if a given type implements an interface.
2311 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2313 public static bool ImplementsInterface (Type t, Type iface)
2315 TypeExpr [] interfaces;
2318 // FIXME OPTIMIZATION:
2319 // as soon as we hit a non-TypeBuiler in the interface
2320 // chain, we could return, as the `Type.GetInterfaces'
2321 // will return all the interfaces implement by the type
2325 interfaces = GetInterfaces (t);
2327 if (interfaces != null){
2328 foreach (TypeExpr i in interfaces){
2329 if (i.Type == iface)
2335 } while (t != null);
2340 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2342 // This is a custom version of Convert.ChangeType() which works
2343 // with the TypeBuilder defined types when compiling corlib.
2344 public static object ChangeType (object value, Type conversionType, out bool error)
2346 IConvertible convert_value = value as IConvertible;
2348 if (convert_value == null){
2354 // We must use Type.Equals() here since `conversionType' is
2355 // the TypeBuilder created version of a system type and not
2356 // the system type itself. You cannot use Type.GetTypeCode()
2357 // on such a type - it'd always return TypeCode.Object.
2361 if (conversionType.Equals (typeof (Boolean)))
2362 return (object)(convert_value.ToBoolean (nf_provider));
2363 else if (conversionType.Equals (typeof (Byte)))
2364 return (object)(convert_value.ToByte (nf_provider));
2365 else if (conversionType.Equals (typeof (Char)))
2366 return (object)(convert_value.ToChar (nf_provider));
2367 else if (conversionType.Equals (typeof (DateTime)))
2368 return (object)(convert_value.ToDateTime (nf_provider));
2369 else if (conversionType.Equals (typeof (Decimal)))
2370 return (object)(convert_value.ToDecimal (nf_provider));
2371 else if (conversionType.Equals (typeof (Double)))
2372 return (object)(convert_value.ToDouble (nf_provider));
2373 else if (conversionType.Equals (typeof (Int16)))
2374 return (object)(convert_value.ToInt16 (nf_provider));
2375 else if (conversionType.Equals (typeof (Int32)))
2376 return (object)(convert_value.ToInt32 (nf_provider));
2377 else if (conversionType.Equals (typeof (Int64)))
2378 return (object)(convert_value.ToInt64 (nf_provider));
2379 else if (conversionType.Equals (typeof (SByte)))
2380 return (object)(convert_value.ToSByte (nf_provider));
2381 else if (conversionType.Equals (typeof (Single)))
2382 return (object)(convert_value.ToSingle (nf_provider));
2383 else if (conversionType.Equals (typeof (String)))
2384 return (object)(convert_value.ToString (nf_provider));
2385 else if (conversionType.Equals (typeof (UInt16)))
2386 return (object)(convert_value.ToUInt16 (nf_provider));
2387 else if (conversionType.Equals (typeof (UInt32)))
2388 return (object)(convert_value.ToUInt32 (nf_provider));
2389 else if (conversionType.Equals (typeof (UInt64)))
2390 return (object)(convert_value.ToUInt64 (nf_provider));
2391 else if (conversionType.Equals (typeof (Object)))
2392 return (object)(value);
2402 // This is needed, because enumerations from assemblies
2403 // do not report their underlyingtype, but they report
2406 public static Type EnumToUnderlying (Type t)
2408 if (t == TypeManager.enum_type)
2411 t = t.UnderlyingSystemType;
2412 if (!TypeManager.IsEnumType (t))
2415 if (t is TypeBuilder) {
2416 // slow path needed to compile corlib
2417 if (t == TypeManager.bool_type ||
2418 t == TypeManager.byte_type ||
2419 t == TypeManager.sbyte_type ||
2420 t == TypeManager.char_type ||
2421 t == TypeManager.short_type ||
2422 t == TypeManager.ushort_type ||
2423 t == TypeManager.int32_type ||
2424 t == TypeManager.uint32_type ||
2425 t == TypeManager.int64_type ||
2426 t == TypeManager.uint64_type)
2428 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2430 TypeCode tc = Type.GetTypeCode (t);
2433 case TypeCode.Boolean:
2434 return TypeManager.bool_type;
2436 return TypeManager.byte_type;
2437 case TypeCode.SByte:
2438 return TypeManager.sbyte_type;
2440 return TypeManager.char_type;
2441 case TypeCode.Int16:
2442 return TypeManager.short_type;
2443 case TypeCode.UInt16:
2444 return TypeManager.ushort_type;
2445 case TypeCode.Int32:
2446 return TypeManager.int32_type;
2447 case TypeCode.UInt32:
2448 return TypeManager.uint32_type;
2449 case TypeCode.Int64:
2450 return TypeManager.int64_type;
2451 case TypeCode.UInt64:
2452 return TypeManager.uint64_type;
2454 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2458 // When compiling corlib and called with one of the core types, return
2459 // the corresponding typebuilder for that type.
2461 public static Type TypeToCoreType (Type t)
2463 if (RootContext.StdLib || (t is TypeBuilder))
2466 TypeCode tc = Type.GetTypeCode (t);
2469 case TypeCode.Boolean:
2470 return TypeManager.bool_type;
2472 return TypeManager.byte_type;
2473 case TypeCode.SByte:
2474 return TypeManager.sbyte_type;
2476 return TypeManager.char_type;
2477 case TypeCode.Int16:
2478 return TypeManager.short_type;
2479 case TypeCode.UInt16:
2480 return TypeManager.ushort_type;
2481 case TypeCode.Int32:
2482 return TypeManager.int32_type;
2483 case TypeCode.UInt32:
2484 return TypeManager.uint32_type;
2485 case TypeCode.Int64:
2486 return TypeManager.int64_type;
2487 case TypeCode.UInt64:
2488 return TypeManager.uint64_type;
2489 case TypeCode.Single:
2490 return TypeManager.float_type;
2491 case TypeCode.Double:
2492 return TypeManager.double_type;
2493 case TypeCode.String:
2494 return TypeManager.string_type;
2496 if (t == typeof (void))
2497 return TypeManager.void_type;
2498 if (t == typeof (object))
2499 return TypeManager.object_type;
2500 if (t == typeof (System.Type))
2501 return TypeManager.type_type;
2502 if (t == typeof (System.IntPtr))
2503 return TypeManager.intptr_type;
2509 /// Utility function that can be used to probe whether a type
2510 /// is managed or not.
2512 public static bool VerifyUnManaged (Type t, Location loc)
2514 if (t.IsValueType || t.IsPointer){
2516 // FIXME: this is more complex, we actually need to
2517 // make sure that the type does not contain any
2523 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2524 // We need this explicit check here to make it work when
2525 // compiling corlib.
2530 "Cannot take the address or size of a variable of a managed type ('" +
2531 CSharpName (t) + "')");
2536 /// Returns the name of the indexer in a given type.
2539 /// The default is not always `Item'. The user can change this behaviour by
2540 /// using the DefaultMemberAttribute in the class.
2542 /// For example, the String class indexer is named `Chars' not `Item'
2544 public static string IndexerPropertyName (Type t)
2546 if (t.IsGenericInstance)
2547 t = t.GetGenericTypeDefinition ();
2549 if (t is TypeBuilder) {
2550 if (t.IsInterface) {
2551 Interface i = LookupInterface (t);
2553 if ((i == null) || (i.IndexerName == null))
2556 return i.IndexerName;
2558 TypeContainer tc = LookupTypeContainer (t);
2560 if ((tc == null) || (tc.IndexerName == null))
2563 return tc.IndexerName;
2567 System.Attribute attr = System.Attribute.GetCustomAttribute (
2568 t, TypeManager.default_member_type);
2570 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2571 return dma.MemberName;
2577 static MethodInfo pinned_method = null;
2578 public static void MakePinned (LocalBuilder builder)
2580 if (pinned_method == null) {
2581 pinned_method = typeof (LocalBuilder).GetMethod ("MakePinned", BindingFlags.Instance | BindingFlags.NonPublic);
2582 if (pinned_method == null) {
2583 Report.Warning (-24, new Location (-1), "Microsoft.NET does not support making pinned variables." +
2584 "This code may cause errors on a runtime with a moving GC");
2590 pinned_method.Invoke (builder, null);
2595 // Returns whether the array of memberinfos contains the given method
2597 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2599 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2601 foreach (MethodBase method in array) {
2602 if (method.Name != new_method.Name)
2605 if (method is MethodInfo && new_method is MethodInfo)
2606 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2610 Type [] old_args = TypeManager.GetArgumentTypes (method);
2611 int old_count = old_args.Length;
2614 if (new_args.Length != old_count)
2617 for (i = 0; i < old_count; i++){
2618 if (old_args [i] != new_args [i])
2631 // We copy methods from `new_members' into `target_list' if the signature
2632 // for the method from in the new list does not exist in the target_list
2634 // The name is assumed to be the same.
2636 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2638 if (target_list == null){
2639 target_list = new ArrayList ();
2641 foreach (MemberInfo mi in new_members){
2642 if (mi is MethodBase)
2643 target_list.Add (mi);
2648 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2649 target_list.CopyTo (target_array, 0);
2651 foreach (MemberInfo mi in new_members){
2652 MethodBase new_method = (MethodBase) mi;
2654 if (!ArrayContainsMethod (target_array, new_method))
2655 target_list.Add (new_method);
2660 static public bool IsGenericMethod (MethodBase mb)
2662 if (mb.DeclaringType is TypeBuilder) {
2663 IMethodData method = (IMethodData) builder_to_method [mb];
2667 return method.GenericMethod != null;
2670 return mb.IsGenericMethodDefinition;
2673 #region MemberLookup implementation
2676 // Whether we allow private members in the result (since FindMembers
2677 // uses NonPublic for both protected and private), we need to distinguish.
2680 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2685 internal class Closure {
2686 internal bool private_ok;
2688 // Who is invoking us and which type is being queried currently.
2689 internal Type invocation_type;
2690 internal Type qualifier_type;
2692 // The assembly that defines the type is that is calling us
2693 internal Assembly invocation_assembly;
2694 internal IList almost_match;
2696 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2698 if (invocation_type == null)
2701 Debug.Assert (IsSubclassOrNestedChildOf (invocation_type, m.DeclaringType));
2706 // A nested class has access to all the protected members visible to its parent.
2707 if (qualifier_type != null
2708 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2711 if (invocation_type == m.DeclaringType
2712 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2713 // Although a derived class can access protected members of its base class
2714 // it cannot do so through an instance of the base class (CS1540).
2715 // => Ancestry should be: declaring_type ->* invocation_type ->* qualified_type
2716 if (qualifier_type == null
2717 || qualifier_type == invocation_type
2718 || qualifier_type.IsSubclassOf (invocation_type))
2722 if (almost_match != null)
2723 almost_match.Add (m);
2728 // This filter filters by name + whether it is ok to include private
2729 // members in the search
2731 internal bool Filter (MemberInfo m, object filter_criteria)
2734 // Hack: we know that the filter criteria will always be in the `closure'
2738 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2741 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2742 (invocation_type != null) && IsEqual (m.DeclaringType, invocation_type))
2746 // Ugly: we need to find out the type of `m', and depending
2747 // on this, tell whether we accept or not
2749 if (m is MethodBase){
2750 MethodBase mb = (MethodBase) m;
2751 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2753 if (ma == MethodAttributes.Private)
2754 return private_ok ||
2755 IsEqual (invocation_type, m.DeclaringType) ||
2756 IsNestedChildOf (invocation_type, m.DeclaringType);
2759 // FamAndAssem requires that we not only derivate, but we are on the
2762 if (ma == MethodAttributes.FamANDAssem){
2763 if (invocation_assembly != mb.DeclaringType.Assembly)
2767 // Assembly and FamORAssem succeed if we're in the same assembly.
2768 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2769 if (invocation_assembly == mb.DeclaringType.Assembly)
2773 // We already know that we aren't in the same assembly.
2774 if (ma == MethodAttributes.Assembly)
2777 // Family and FamANDAssem require that we derive.
2778 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2779 if (invocation_type == null)
2782 if (!IsSubclassOrNestedChildOf (invocation_type, mb.DeclaringType))
2785 // Although a derived class can access protected members of its base class
2786 // it cannot do so through an instance of the base class (CS1540).
2787 if (!mb.IsStatic && (invocation_type != qualifier_type) &&
2788 (qualifier_type != null) &&
2789 invocation_type.IsSubclassOf (qualifier_type) &&
2790 !TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2800 if (m is FieldInfo){
2801 FieldInfo fi = (FieldInfo) m;
2802 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2804 if (fa == FieldAttributes.Private)
2805 return private_ok ||
2806 IsEqual (invocation_type, m.DeclaringType) ||
2807 IsNestedChildOf (invocation_type, m.DeclaringType);
2810 // FamAndAssem requires that we not only derivate, but we are on the
2813 if (fa == FieldAttributes.FamANDAssem){
2814 if (invocation_assembly != fi.DeclaringType.Assembly)
2818 // Assembly and FamORAssem succeed if we're in the same assembly.
2819 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2820 if (invocation_assembly == fi.DeclaringType.Assembly)
2824 // We already know that we aren't in the same assembly.
2825 if (fa == FieldAttributes.Assembly)
2828 // Family and FamANDAssem require that we derive.
2829 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2830 if (invocation_type == null)
2833 if (!IsSubclassOrNestedChildOf (invocation_type, fi.DeclaringType))
2836 // Although a derived class can access protected members of its base class
2837 // it cannot do so through an instance of the base class (CS1540).
2838 if (!fi.IsStatic && (invocation_type != qualifier_type) &&
2839 (qualifier_type != null) &&
2840 invocation_type.IsSubclassOf (qualifier_type) &&
2841 !TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2852 // EventInfos and PropertyInfos, return true because they lack permission
2853 // information, so we need to check later on the methods.
2859 static Closure closure = new Closure ();
2860 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2861 static MemberFilter FilterNone_delegate = new MemberFilter (FilterNone);
2864 // Looks up a member called `name' in the `queried_type'. This lookup
2865 // is done by code that is contained in the definition for `invocation_type'
2866 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2868 // `invocation_type' is used to check whether we're allowed to access the requested
2869 // member wrt its protection level.
2871 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2872 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2873 // is B and qualifier_type is A). This is used to do the CS1540 check.
2875 // When resolving a SimpleName, `qualifier_type' is null.
2877 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2878 // the same than `queried_type' - except when we're being called from BaseAccess;
2879 // in this case, `invocation_type' is the current type and `queried_type' the base
2880 // type, so this'd normally trigger a CS1540.
2882 // The binding flags are `bf' and the kind of members being looked up are `mt'
2884 // The return value always includes private members which code in `invocation_type'
2885 // is allowed to access (using the specified `qualifier_type' if given); only use
2886 // BindingFlags.NonPublic to bypass the permission check.
2888 // The 'almost_match' argument is used for reporting error CS1540.
2890 // Returns an array of a single element for everything but Methods/Constructors
2891 // that might return multiple matches.
2893 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2894 Type queried_type, MemberTypes mt,
2895 BindingFlags original_bf, string name, IList almost_match)
2897 Timer.StartTimer (TimerType.MemberLookup);
2899 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2900 queried_type, mt, original_bf, name, almost_match);
2902 Timer.StopTimer (TimerType.MemberLookup);
2907 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2908 Type queried_type, MemberTypes mt,
2909 BindingFlags original_bf, string name, IList almost_match)
2911 BindingFlags bf = original_bf;
2913 ArrayList method_list = null;
2914 Type current_type = queried_type;
2915 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2916 bool skip_iface_check = true, used_cache = false;
2917 bool always_ok_flag = false;
2919 closure.invocation_type = invocation_type;
2920 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2921 closure.qualifier_type = qualifier_type;
2922 closure.almost_match = almost_match;
2925 // If we are a nested class, we always have access to our container
2928 if (invocation_type != null){
2929 string invocation_name = invocation_type.FullName;
2930 if ((invocation_name != null) && (invocation_name.IndexOf ('+') != -1)){
2931 string container = queried_type.FullName + "+";
2932 int container_length = container.Length;
2934 if (invocation_name.Length > container_length){
2935 string shared = invocation_name.Substring (0, container_length);
2937 if (shared == container)
2938 always_ok_flag = true;
2943 // This is from the first time we find a method
2944 // in most cases, we do not actually find a method in the base class
2945 // so we can just ignore it, and save the arraylist allocation
2946 MemberInfo [] first_members_list = null;
2947 bool use_first_members_list = false;
2953 // `NonPublic' is lame, because it includes both protected and
2954 // private methods, so we need to control this behavior by
2955 // explicitly tracking if a private method is ok or not.
2957 // The possible cases are:
2958 // public, private and protected (internal does not come into the
2961 if ((invocation_type != null) &&
2962 ((invocation_type == current_type) ||
2963 IsNestedChildOf (invocation_type, current_type)) ||
2965 bf = original_bf | BindingFlags.NonPublic;
2969 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2971 Timer.StopTimer (TimerType.MemberLookup);
2973 list = MemberLookup_FindMembers (
2974 current_type, mt, bf, name, out used_cache);
2976 Timer.StartTimer (TimerType.MemberLookup);
2979 // When queried for an interface type, the cache will automatically check all
2980 // inherited members, so we don't need to do this here. However, this only
2981 // works if we already used the cache in the first iteration of this loop.
2983 // If we used the cache in any further iteration, we can still terminate the
2984 // loop since the cache always looks in all parent classes.
2990 skip_iface_check = false;
2992 if (current_type == TypeManager.object_type)
2995 current_type = current_type.BaseType;
2998 // This happens with interfaces, they have a null
2999 // basetype. Look members up in the Object class.
3001 if (current_type == null)
3002 current_type = TypeManager.object_type;
3005 if (list.Length == 0)
3009 // Events and types are returned by both `static' and `instance'
3010 // searches, which means that our above FindMembers will
3011 // return two copies of the same.
3013 if (list.Length == 1 && !(list [0] is MethodBase)){
3018 // Multiple properties: we query those just to find out the indexer
3021 if (list [0] is PropertyInfo)
3025 // We found an event: the cache lookup returns both the event and
3026 // its private field.
3028 if (list [0] is EventInfo) {
3029 if ((list.Length == 2) && (list [1] is FieldInfo))
3030 return new MemberInfo [] { list [0] };
3037 // We found methods, turn the search into "method scan"
3041 if (first_members_list != null) {
3042 if (use_first_members_list) {
3043 method_list = CopyNewMethods (method_list, first_members_list);
3044 use_first_members_list = false;
3047 method_list = CopyNewMethods (method_list, list);
3049 first_members_list = list;
3050 use_first_members_list = true;
3052 mt &= (MemberTypes.Method | MemberTypes.Constructor);
3054 } while (searching);
3056 if (use_first_members_list) {
3057 foreach (MemberInfo mi in first_members_list) {
3058 if (! (mi is MethodBase)) {
3059 method_list = CopyNewMethods (method_list, first_members_list);
3060 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3063 return (MemberInfo []) first_members_list;
3066 if (method_list != null && method_list.Count > 0) {
3067 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
3070 // This happens if we already used the cache in the first iteration, in this case
3071 // the cache already looked in all interfaces.
3073 if (skip_iface_check)
3077 // Interfaces do not list members they inherit, so we have to
3080 if (!queried_type.IsInterface)
3083 if (queried_type.IsArray)
3084 queried_type = TypeManager.array_type;
3086 TypeExpr [] ifaces = GetInterfaces (queried_type);
3090 foreach (TypeExpr itype in ifaces){
3093 x = MemberLookup (null, null, itype.Type, mt, bf, name, null);
3102 // This is used to extract properties and event declarations from a type
3104 static MemberInfo [] SpecialContainerLookup (Type t, bool is_static)
3106 BindingFlags bf = BindingFlags.DeclaredOnly | (is_static ? BindingFlags.Static : BindingFlags.Instance);
3108 bf |= BindingFlags.Public | BindingFlags.NonPublic;
3110 if (t is TypeBuilder) {
3111 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
3113 return (MemberInfo []) decl.FindMembers (
3114 MemberTypes.Property | MemberTypes.Event,
3115 bf, FilterNone_delegate, null);
3117 return t.FindMembers (MemberTypes.Property | MemberTypes.Event,
3118 bf, FilterNone_delegate, null);
3123 public static bool IsSpecialMethod (MethodBase mb)
3125 Type t = mb.DeclaringType;
3127 MemberInfo [] matches = TypeManager.SpecialContainerLookup (t, mb.IsStatic);
3128 if (matches == null)
3131 foreach (MemberInfo mi in matches){
3132 if (mi is PropertyBuilder){
3133 Pair p = (Pair) properties [mi];
3135 if (p.First == mb || p.Second == mb)
3137 } else if (mi is PropertyInfo){
3138 MethodInfo [] methods = ((PropertyInfo) mi).GetAccessors (true);
3140 foreach (MethodInfo m in methods){
3144 } else if (mi is MyEventBuilder){
3145 Pair p = (Pair) events [mi];
3147 if (p.First == mb || p.Second == mb)
3149 } else if (mi is EventInfo){
3150 EventInfo ei = ((EventInfo) mi);
3152 if (ei.GetAddMethod (true) == mb)
3155 if (ei.GetRemoveMethod (true) == mb)
3158 if (ei.GetRaiseMethod (true) == mb)
3164 // Now check if it is an operator method
3168 if (s.StartsWith ("op_")){
3169 foreach (string name in Unary.oper_names){
3174 foreach (string name in Binary.oper_names){
3188 /// There is exactly one instance of this class per type.
3190 public sealed class TypeHandle : IMemberContainer {
3191 public readonly TypeHandle BaseType;
3193 readonly int id = ++next_id;
3194 static int next_id = 0;
3197 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3198 /// a TypeHandle yet, a new instance of it is created. This static method
3199 /// ensures that we'll only have one TypeHandle instance per type.
3201 public static TypeHandle GetTypeHandle (Type t)
3203 TypeHandle handle = (TypeHandle) type_hash [t];
3207 handle = new TypeHandle (t);
3208 type_hash.Add (t, handle);
3212 public static void CleanUp ()
3218 /// Returns the TypeHandle for TypeManager.object_type.
3220 public static IMemberContainer ObjectType {
3222 if (object_type != null)
3225 object_type = GetTypeHandle (TypeManager.object_type);
3232 /// Returns the TypeHandle for TypeManager.array_type.
3234 public static IMemberContainer ArrayType {
3236 if (array_type != null)
3239 array_type = GetTypeHandle (TypeManager.array_type);
3245 private static PtrHashtable type_hash = new PtrHashtable ();
3247 private static TypeHandle object_type = null;
3248 private static TypeHandle array_type = null;
3251 private string full_name;
3252 private bool is_interface;
3253 private MemberCache member_cache;
3255 private TypeHandle (Type type)
3258 full_name = type.FullName != null ? type.FullName : type.Name;
3259 if (type.BaseType != null)
3260 BaseType = GetTypeHandle (type.BaseType);
3261 this.is_interface = type.IsInterface || type.IsGenericParameter;
3262 this.member_cache = new MemberCache (this);
3265 // IMemberContainer methods
3267 public string Name {
3279 public IMemberContainer Parent {
3285 public bool IsInterface {
3287 return is_interface;
3291 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3293 MemberInfo [] members;
3294 if (type is GenericTypeParameterBuilder)
3295 return MemberList.Empty;
3296 if (mt == MemberTypes.Event)
3297 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3299 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3301 Array.Reverse (members);
3303 return new MemberList (members);
3306 // IMemberFinder methods
3308 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3309 MemberFilter filter, object criteria)
3311 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3314 public MemberCache MemberCache {
3316 return member_cache;
3320 public override string ToString ()
3322 if (BaseType != null)
3323 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3325 return "TypeHandle (" + id + "," + Name + ")";