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 partial 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;
105 static internal Type compiler_generated_attr_type;
106 static internal Type fixed_buffer_attr_type;
109 // An empty array of types
111 static public Type [] NoTypes;
112 static public TypeExpr [] NoTypeExprs;
116 // Expressions representing the internal types. Used during declaration
119 static public TypeExpr system_object_expr, system_string_expr;
120 static public TypeExpr system_boolean_expr, system_decimal_expr;
121 static public TypeExpr system_single_expr, system_double_expr;
122 static public TypeExpr system_sbyte_expr, system_byte_expr;
123 static public TypeExpr system_int16_expr, system_uint16_expr;
124 static public TypeExpr system_int32_expr, system_uint32_expr;
125 static public TypeExpr system_int64_expr, system_uint64_expr;
126 static public TypeExpr system_char_expr, system_void_expr;
127 static public TypeExpr system_asynccallback_expr;
128 static public TypeExpr system_iasyncresult_expr;
129 static public TypeExpr system_valuetype_expr;
130 static public TypeExpr system_intptr_expr;
133 // This is only used when compiling corlib
135 static public Type system_int32_type;
136 static public Type system_array_type;
137 static public Type system_type_type;
138 static public Type system_assemblybuilder_type;
139 static public MethodInfo system_int_array_get_length;
140 static public MethodInfo system_int_array_get_rank;
141 static public MethodInfo system_object_array_clone;
142 static public MethodInfo system_int_array_get_length_int;
143 static public MethodInfo system_int_array_get_lower_bound_int;
144 static public MethodInfo system_int_array_get_upper_bound_int;
145 static public MethodInfo system_void_array_copyto_array_int;
149 // Internal, not really used outside
151 static Type runtime_helpers_type;
154 // These methods are called by code generated by the compiler
156 static public MethodInfo string_concat_string_string;
157 static public MethodInfo string_concat_string_string_string;
158 static public MethodInfo string_concat_string_string_string_string;
159 static public MethodInfo string_concat_string_dot_dot_dot;
160 static public MethodInfo string_concat_object_object;
161 static public MethodInfo string_concat_object_object_object;
162 static public MethodInfo string_concat_object_dot_dot_dot;
163 static public MethodInfo string_isinterneted_string;
164 static public MethodInfo system_type_get_type_from_handle;
165 static public MethodInfo object_getcurrent_void;
166 static public MethodInfo bool_movenext_void;
167 static public MethodInfo ienumerable_getenumerator_void;
168 static public MethodInfo void_reset_void;
169 static public MethodInfo void_dispose_void;
170 static public MethodInfo void_monitor_enter_object;
171 static public MethodInfo void_monitor_exit_object;
172 static public MethodInfo void_initializearray_array_fieldhandle;
173 static public MethodInfo int_getlength_int;
174 static public MethodInfo delegate_combine_delegate_delegate;
175 static public MethodInfo delegate_remove_delegate_delegate;
176 static public MethodInfo int_get_offset_to_string_data;
177 static public MethodInfo int_array_get_length;
178 static public MethodInfo int_array_get_rank;
179 static public MethodInfo object_array_clone;
180 static public MethodInfo int_array_get_length_int;
181 static public MethodInfo int_array_get_lower_bound_int;
182 static public MethodInfo int_array_get_upper_bound_int;
183 static public MethodInfo void_array_copyto_array_int;
186 // The attribute constructors.
188 static public ConstructorInfo object_ctor;
189 static public ConstructorInfo cons_param_array_attribute;
190 static public ConstructorInfo void_decimal_ctor_five_args;
191 static public ConstructorInfo void_decimal_ctor_int_arg;
192 static public ConstructorInfo unverifiable_code_ctor;
193 static public ConstructorInfo default_member_ctor;
194 static public ConstructorInfo decimal_constant_attribute_ctor;
195 static internal ConstructorInfo struct_layout_attribute_ctor;
200 static internal CustomAttributeBuilder compiler_generated_attr;
201 static internal ConstructorInfo fixed_buffer_attr_ctor;
204 // Holds the Array of Assemblies that have been loaded
205 // (either because it is the default or the user used the
206 // -r command line option)
208 static Assembly [] assemblies;
211 // Keeps a list of modules. We used this to do lookups
212 // on the module using GetType -- needed for arrays
214 static Module [] modules;
217 // This is the type_cache from the assemblies to avoid
218 // hitting System.Reflection on every lookup.
220 static Hashtable types;
223 // This is used to hotld the corresponding TypeContainer objects
224 // since we need this in FindMembers
226 static Hashtable typecontainers;
229 // Keeps track of those types that are defined by the
232 static ArrayList user_types;
234 static PtrHashtable builder_to_declspace;
236 static PtrHashtable builder_to_member_cache;
239 // Tracks the interfaces implemented by typebuilders. We only
240 // enter those who do implement or or more interfaces
242 static PtrHashtable builder_to_ifaces;
245 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
246 // the arguments to the method
248 static Hashtable method_arguments;
251 // Maps PropertyBuilder to a Type array that contains
252 // the arguments to the indexer
254 static Hashtable indexer_arguments;
257 // Maps a MethodBase to its ParameterData (either InternalParameters or ReflectionParameters)
259 static Hashtable method_params;
262 // Keeps track of methods
265 static Hashtable builder_to_method;
268 // Contains all public types from referenced assemblies.
269 // This member is used only if CLS Compliance verification is required.
271 public static Hashtable all_imported_types;
278 public static void CleanUp ()
280 // Lets get everything clean so that we can collect before generating code
284 typecontainers = null;
286 builder_to_declspace = null;
287 builder_to_member_cache = null;
288 builder_to_ifaces = null;
289 method_arguments = null;
290 indexer_arguments = null;
291 method_params = null;
292 builder_to_method = null;
296 negative_hits = null;
297 builder_to_constant = null;
298 fieldbuilders_to_fields = null;
300 priv_fields_events = null;
304 TypeHandle.CleanUp ();
308 /// A filter for Findmembers that uses the Signature object to
311 static bool SignatureFilter (MemberInfo mi, object criteria)
313 Signature sig = (Signature) criteria;
315 if (!(mi is MethodBase))
318 if (mi.Name != sig.name)
321 int count = sig.args.Length;
323 if (mi is MethodBuilder || mi is ConstructorBuilder){
324 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
326 if (candidate_args.Length != count)
329 for (int i = 0; i < count; i++)
330 if (candidate_args [i] != sig.args [i])
335 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
337 if (pars.Length != count)
340 for (int i = 0; i < count; i++)
341 if (pars [i].ParameterType != sig.args [i])
347 // A delegate that points to the filter above.
348 static MemberFilter signature_filter;
351 // These are expressions that represent some of the internal data types, used
354 static void InitExpressionTypes ()
356 system_object_expr = new TypeLookupExpression ("System.Object");
357 system_string_expr = new TypeLookupExpression ("System.String");
358 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
359 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
360 system_single_expr = new TypeLookupExpression ("System.Single");
361 system_double_expr = new TypeLookupExpression ("System.Double");
362 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
363 system_byte_expr = new TypeLookupExpression ("System.Byte");
364 system_int16_expr = new TypeLookupExpression ("System.Int16");
365 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
366 system_int32_expr = new TypeLookupExpression ("System.Int32");
367 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
368 system_int64_expr = new TypeLookupExpression ("System.Int64");
369 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
370 system_char_expr = new TypeLookupExpression ("System.Char");
371 system_void_expr = new TypeLookupExpression ("System.Void");
372 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
373 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
374 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
375 system_intptr_expr = new TypeLookupExpression ("System.IntPtr");
378 static TypeManager ()
380 assemblies = new Assembly [0];
382 user_types = new ArrayList ();
384 types = new Hashtable ();
385 typecontainers = new Hashtable ();
387 builder_to_declspace = new PtrHashtable ();
388 builder_to_member_cache = new PtrHashtable ();
389 builder_to_method = new PtrHashtable ();
390 method_arguments = new PtrHashtable ();
391 method_params = new PtrHashtable ();
392 indexer_arguments = new PtrHashtable ();
393 builder_to_ifaces = new PtrHashtable ();
395 NoTypes = new Type [0];
396 NoTypeExprs = new TypeExpr [0];
398 signature_filter = new MemberFilter (SignatureFilter);
400 InitExpressionTypes ();
403 public static void HandleDuplicate (string name, Type t)
405 Type prev = (Type) types [name];
406 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
410 // This probably never happens, as we catch this before
412 Report.Error (-17, "The type `" + name + "' has already been defined.");
416 tc = builder_to_declspace [t] as TypeContainer;
419 1595, "The type `" + name + "' is defined in an existing assembly;"+
420 " Using the new definition from: " + tc.Location);
423 1595, "The type `" + name + "' is defined in an existing assembly;");
426 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
432 public static void AddUserType (string name, TypeBuilder t)
437 HandleDuplicate (name, t);
443 // This entry point is used by types that we define under the covers
445 public static void RegisterBuilder (Type tb, Type [] ifaces)
448 builder_to_ifaces [tb] = ifaces;
451 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc)
453 builder_to_declspace.Add (t, tc);
454 typecontainers.Add (name, tc);
455 AddUserType (name, t);
458 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
463 HandleDuplicate (name, t);
466 builder_to_declspace.Add (t, del);
469 public static void AddEnumType (string name, TypeBuilder t, Enum en)
474 HandleDuplicate (name, t);
476 builder_to_declspace.Add (t, en);
479 public static void AddMethod (MethodBase builder, IMethodData method)
481 builder_to_method.Add (builder, method);
484 public static IMethodData GetMethod (MethodBase builder)
486 return (IMethodData) builder_to_method [builder];
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 MemberCache LookupMemberCache (Type t)
509 if (t is TypeBuilder) {
510 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
511 if (container != null)
512 return container.MemberCache;
515 if (t is GenericTypeParameterBuilder) {
516 IMemberContainer container = builder_to_type_param [t] as IMemberContainer;
518 if (container != null)
519 return container.MemberCache;
522 return TypeHandle.GetMemberCache (t);
525 public static MemberCache LookupBaseInterfacesCache (Type t)
527 Type [] ifaces = t.GetInterfaces ();
529 if (ifaces != null && ifaces.Length == 1)
530 return LookupMemberCache (ifaces [0]);
532 // TODO: the builder_to_member_cache should be indexed by 'ifaces', not 't'
533 MemberCache cache = builder_to_member_cache [t] as MemberCache;
537 cache = new MemberCache (ifaces);
538 builder_to_member_cache.Add (t, cache);
542 public static TypeContainer LookupInterface (Type t)
544 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
545 if ((tc == null) || (tc.Kind != Kind.Interface))
551 public static Delegate LookupDelegate (Type t)
553 return builder_to_declspace [t] as Delegate;
556 public static Enum LookupEnum (Type t)
558 return builder_to_declspace [t] as Enum;
561 public static Class LookupClass (Type t)
563 return (Class) builder_to_declspace [t];
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);
585 public static Assembly [] GetAssemblies ()
591 /// Registers a module builder to lookup types from
593 public static void AddModule (Module mb)
595 int top = modules != null ? modules.Length : 0;
596 Module [] n = new Module [top + 1];
599 modules.CopyTo (n, 0);
604 public static Module[] Modules {
610 static Hashtable references = new Hashtable ();
613 // Gets the reference to T version of the Type (T&)
615 public static Type GetReferenceType (Type t)
617 return t.MakeByRefType ();
620 static Hashtable pointers = new Hashtable ();
623 // Gets the pointer to T version of the Type (T*)
625 public static Type GetPointerType (Type t)
627 string tname = t.FullName + "*";
629 Type ret = t.Assembly.GetType (tname);
632 // If the type comes from the assembly we are building
633 // We need the Hashtable, because .NET 1.1 will return different instance types
634 // every time we call ModuleBuilder.GetType.
637 if (pointers [t] == null)
638 pointers [t] = CodeGen.Module.Builder.GetType (tname);
640 ret = (Type) pointers [t];
647 // Low-level lookup, cache-less
649 static Type LookupTypeReflection (string name)
653 foreach (Assembly a in assemblies){
654 t = a.GetType (name);
659 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
660 if (ta == TypeAttributes.NotPublic ||
661 ta == TypeAttributes.NestedPrivate ||
662 ta == TypeAttributes.NestedAssembly ||
663 ta == TypeAttributes.NestedFamANDAssem){
666 // In .NET pointers turn out to be private, even if their
667 // element type is not
670 t = t.GetElementType ();
680 foreach (Module mb in modules) {
681 t = mb.GetType (name);
689 static Hashtable negative_hits = new Hashtable ();
692 // This function is used when you want to avoid the lookups, and want to go
693 // directly to the source. This will use the cache.
695 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
696 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
697 // way to test things other than doing a fullname compare
699 public static Type LookupTypeDirect (string name)
701 Type t = (Type) types [name];
705 t = LookupTypeReflection (name);
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 if (t.FullName == null)
850 return Regex.Replace (t.FullName,
852 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
853 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
854 @"Boolean|String|Void|Null)" +
856 new MatchEvaluator (CSharpNameMatch)).Replace ('+', '.');
859 static String CSharpNameMatch (Match match)
861 string s = match.Groups [1].Captures [0].Value;
863 Replace ("int32", "int").
864 Replace ("uint32", "uint").
865 Replace ("int16", "short").
866 Replace ("uint16", "ushort").
867 Replace ("int64", "long").
868 Replace ("uint64", "ulong").
869 Replace ("single", "float").
870 Replace ("boolean", "bool")
871 + match.Groups [2].Captures [0].Value;
875 /// Returns the signature of the method with full namespace classification
877 static public string GetFullNameSignature (MemberInfo mi)
879 // Unfortunately, there's no dynamic dispatch on the arguments of a function.
880 return (mi is MethodBase)
881 ? GetFullNameSignature (mi as MethodBase)
882 : mi.DeclaringType.FullName.Replace ('+', '.') + '.' + mi.Name;
885 static public string GetFullNameSignature (MethodBase mb)
887 string name = mb.Name;
889 name = mb.DeclaringType.Name;
891 if (mb.IsSpecialName) {
892 if (name.StartsWith ("get_") || name.StartsWith ("set_")) {
893 name = name.Remove (0, 4);
900 return mb.DeclaringType.FullName.Replace ('+', '.') + '.' + name;
903 static public string GetFullName (Type t)
905 if (t.FullName == null)
908 string name = t.FullName.Replace ('+', '.');
910 DeclSpace tc = LookupDeclSpace (t);
911 if ((tc != null) && tc.IsGeneric) {
912 TypeParameter[] tparam = tc.TypeParameters;
914 StringBuilder sb = new StringBuilder (name);
916 for (int i = 0; i < tparam.Length; i++) {
919 sb.Append (tparam [i].Name);
922 return sb.ToString ();
923 } else if (t.HasGenericArguments && !t.IsGenericInstance) {
924 Type[] tparam = t.GetGenericArguments ();
926 StringBuilder sb = new StringBuilder (name);
928 for (int i = 0; i < tparam.Length; i++) {
931 sb.Append (tparam [i].Name);
934 return sb.ToString ();
941 /// Returns the signature of the property and indexer
943 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
946 return GetFullNameSignature (pb);
949 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
950 string signature = GetFullNameSignature (mb);
951 string arg = GetParameterData (mb).ParameterDesc (0);
952 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
956 /// Returns the signature of the method
958 static public string CSharpSignature (MethodBase mb)
960 StringBuilder sig = new StringBuilder ("(");
962 ParameterData iparams = GetParameterData (mb);
965 if (mb.IsSpecialName && iparams.Count == 0 && !mb.IsConstructor)
966 return GetFullNameSignature (mb);
968 for (int i = 0; i < iparams.Count; i++) {
972 sig.Append (iparams.ParameterDesc (i));
977 if (mb.IsSpecialName && iparams.Count == 1 && !mb.IsConstructor) {
978 sig.Replace ('(', '[');
979 sig.Replace (')', ']');
982 return GetFullNameSignature (mb) + sig.ToString ();
985 public static string GetMethodName (MethodInfo m)
987 if (!IsGenericMethod (m))
990 return MemberName.MakeName (m.Name, m.GetGenericArguments ().Length);
994 /// Looks up a type, and aborts if it is not found. This is used
995 /// by types required by the compiler
997 static Type CoreLookupType (string name)
999 Type t = LookupTypeDirect (name);
1002 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
1003 Environment.Exit (1);
1010 /// Returns the MethodInfo for a method named `name' defined
1011 /// in type `t' which takes arguments of types `args'
1013 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
1017 BindingFlags flags = instance_and_static | BindingFlags.Public;
1023 flags |= BindingFlags.NonPublic;
1025 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
1026 if (list.Count == 0) {
1028 Report.Error (-19, "Can not find the core function `" + name + "'");
1032 MethodInfo mi = list [0] as MethodInfo;
1035 Report.Error (-19, "Can not find the core function `" + name + "'");
1042 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
1044 return GetMethod (t, name, args, false, report_errors);
1047 static MethodInfo GetMethod (Type t, string name, Type [] args)
1049 return GetMethod (t, name, args, true);
1054 /// Returns the ConstructorInfo for "args"
1056 static ConstructorInfo GetConstructor (Type t, Type [] args)
1064 list = FindMembers (t, MemberTypes.Constructor,
1065 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
1066 signature_filter, sig);
1067 if (list.Count == 0){
1068 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1072 ConstructorInfo ci = list [0] as ConstructorInfo;
1074 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1081 public static void InitEnumUnderlyingTypes ()
1084 int32_type = CoreLookupType ("System.Int32");
1085 int64_type = CoreLookupType ("System.Int64");
1086 uint32_type = CoreLookupType ("System.UInt32");
1087 uint64_type = CoreLookupType ("System.UInt64");
1088 byte_type = CoreLookupType ("System.Byte");
1089 sbyte_type = CoreLookupType ("System.SByte");
1090 short_type = CoreLookupType ("System.Int16");
1091 ushort_type = CoreLookupType ("System.UInt16");
1095 /// The types have to be initialized after the initial
1096 /// population of the type has happened (for example, to
1097 /// bootstrap the corlib.dll
1099 public static void InitCoreTypes ()
1101 object_type = CoreLookupType ("System.Object");
1102 value_type = CoreLookupType ("System.ValueType");
1104 InitEnumUnderlyingTypes ();
1106 char_type = CoreLookupType ("System.Char");
1107 string_type = CoreLookupType ("System.String");
1108 float_type = CoreLookupType ("System.Single");
1109 double_type = CoreLookupType ("System.Double");
1110 char_ptr_type = CoreLookupType ("System.Char*");
1111 decimal_type = CoreLookupType ("System.Decimal");
1112 bool_type = CoreLookupType ("System.Boolean");
1113 enum_type = CoreLookupType ("System.Enum");
1115 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1116 delegate_type = CoreLookupType ("System.Delegate");
1118 array_type = CoreLookupType ("System.Array");
1119 void_type = CoreLookupType ("System.Void");
1120 type_type = CoreLookupType ("System.Type");
1122 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1123 runtime_argument_handle_type = CoreLookupType ("System.RuntimeArgumentHandle");
1124 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1125 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1126 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1127 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1128 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1129 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1130 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1131 idisposable_type = CoreLookupType ("System.IDisposable");
1132 icloneable_type = CoreLookupType ("System.ICloneable");
1133 iconvertible_type = CoreLookupType ("System.IConvertible");
1134 monitor_type = CoreLookupType ("System.Threading.Monitor");
1135 intptr_type = CoreLookupType ("System.IntPtr");
1137 attribute_type = CoreLookupType ("System.Attribute");
1138 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1139 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1140 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1141 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1142 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1143 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1144 out_attribute_type = CoreLookupType ("System.Runtime.InteropServices.OutAttribute");
1145 typed_reference_type = CoreLookupType ("System.TypedReference");
1146 arg_iterator_type = CoreLookupType ("System.ArgIterator");
1147 mbr_type = CoreLookupType ("System.MarshalByRefObject");
1148 decimal_constant_attribute_type = CoreLookupType ("System.Runtime.CompilerServices.DecimalConstantAttribute");
1151 // Sigh. Remove this before the release. Wonder what versions of Mono
1152 // people are running.
1154 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1156 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1158 void_ptr_type = CoreLookupType ("System.Void*");
1160 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1162 exception_type = CoreLookupType ("System.Exception");
1163 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1164 not_supported_exception_type = CoreLookupType ("System.NotSupportedException");
1169 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1170 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1171 cls_compliant_attribute_type = CoreLookupType ("System.CLSCompliantAttribute");
1172 struct_layout_attribute_type = CoreLookupType ("System.Runtime.InteropServices.StructLayoutAttribute");
1173 field_offset_attribute_type = CoreLookupType ("System.Runtime.InteropServices.FieldOffsetAttribute");
1174 security_attr_type = CoreLookupType ("System.Security.Permissions.SecurityAttribute");
1176 InitGenericCoreTypes ();
1181 compiler_generated_attr_type = CoreLookupType ("System.Runtime.CompilerServices.CompilerGeneratedAttribute");
1182 fixed_buffer_attr_type = CoreLookupType ("System.Runtime.CompilerServices.FixedBufferAttribute");
1184 // When compiling corlib, store the "real" types here.
1186 if (!RootContext.StdLib) {
1187 system_int32_type = typeof (System.Int32);
1188 system_array_type = typeof (System.Array);
1189 system_type_type = typeof (System.Type);
1190 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1192 Type [] void_arg = { };
1193 system_int_array_get_length = GetMethod (
1194 system_array_type, "get_Length", void_arg);
1195 system_int_array_get_rank = GetMethod (
1196 system_array_type, "get_Rank", void_arg);
1197 system_object_array_clone = GetMethod (
1198 system_array_type, "Clone", void_arg);
1200 Type [] system_int_arg = { system_int32_type };
1201 system_int_array_get_length_int = GetMethod (
1202 system_array_type, "GetLength", system_int_arg);
1203 system_int_array_get_upper_bound_int = GetMethod (
1204 system_array_type, "GetUpperBound", system_int_arg);
1205 system_int_array_get_lower_bound_int = GetMethod (
1206 system_array_type, "GetLowerBound", system_int_arg);
1208 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1209 system_void_array_copyto_array_int = GetMethod (
1210 system_array_type, "CopyTo", system_array_int_arg);
1212 Type [] system_3_type_arg = {
1213 system_type_type, system_type_type, system_type_type };
1214 Type [] system_4_type_arg = {
1215 system_type_type, system_type_type, system_type_type, system_type_type };
1217 MethodInfo set_corlib_type_builders = GetMethod (
1218 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1219 system_4_type_arg, true, false);
1221 if (set_corlib_type_builders != null) {
1222 object[] args = new object [4];
1223 args [0] = object_type;
1224 args [1] = value_type;
1225 args [2] = enum_type;
1226 args [3] = void_type;
1228 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1230 // Compatibility for an older version of the class libs.
1231 set_corlib_type_builders = GetMethod (
1232 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1233 system_3_type_arg, true, true);
1235 if (set_corlib_type_builders == null) {
1236 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1240 object[] args = new object [3];
1241 args [0] = object_type;
1242 args [1] = value_type;
1243 args [2] = enum_type;
1245 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1249 system_object_expr.Type = object_type;
1250 system_string_expr.Type = string_type;
1251 system_boolean_expr.Type = bool_type;
1252 system_decimal_expr.Type = decimal_type;
1253 system_single_expr.Type = float_type;
1254 system_double_expr.Type = double_type;
1255 system_sbyte_expr.Type = sbyte_type;
1256 system_byte_expr.Type = byte_type;
1257 system_int16_expr.Type = short_type;
1258 system_uint16_expr.Type = ushort_type;
1259 system_int32_expr.Type = int32_type;
1260 system_uint32_expr.Type = uint32_type;
1261 system_int64_expr.Type = int64_type;
1262 system_uint64_expr.Type = uint64_type;
1263 system_char_expr.Type = char_type;
1264 system_void_expr.Type = void_type;
1265 system_asynccallback_expr.Type = asynccallback_type;
1266 system_iasyncresult_expr.Type = iasyncresult_type;
1267 system_valuetype_expr.Type = value_type;
1270 // These are only used for compare purposes
1272 anonymous_method_type = typeof (AnonymousMethod);
1273 null_type = typeof (NullType);
1277 // The helper methods that are used by the compiler
1279 public static void InitCodeHelpers ()
1282 // Now load the default methods that we use.
1284 Type [] string_string = { string_type, string_type };
1285 string_concat_string_string = GetMethod (
1286 string_type, "Concat", string_string);
1287 Type [] string_string_string = { string_type, string_type, string_type };
1288 string_concat_string_string_string = GetMethod (
1289 string_type, "Concat", string_string_string);
1290 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1291 string_concat_string_string_string_string = GetMethod (
1292 string_type, "Concat", string_string_string_string);
1293 Type[] params_string = { TypeManager.LookupType ("System.String[]") };
1294 string_concat_string_dot_dot_dot = GetMethod (
1295 string_type, "Concat", params_string);
1297 Type [] object_object = { object_type, object_type };
1298 string_concat_object_object = GetMethod (
1299 string_type, "Concat", object_object);
1300 Type [] object_object_object = { object_type, object_type, object_type };
1301 string_concat_object_object_object = GetMethod (
1302 string_type, "Concat", object_object_object);
1303 Type[] params_object = { TypeManager.LookupType ("System.Object[]") };
1304 string_concat_object_dot_dot_dot = GetMethod (
1305 string_type, "Concat", params_object);
1307 Type [] string_ = { string_type };
1308 string_isinterneted_string = GetMethod (
1309 string_type, "IsInterned", string_);
1311 Type [] runtime_type_handle = { runtime_handle_type };
1312 system_type_get_type_from_handle = GetMethod (
1313 type_type, "GetTypeFromHandle", runtime_type_handle);
1315 Type [] delegate_delegate = { delegate_type, delegate_type };
1316 delegate_combine_delegate_delegate = GetMethod (
1317 delegate_type, "Combine", delegate_delegate);
1319 delegate_remove_delegate_delegate = GetMethod (
1320 delegate_type, "Remove", delegate_delegate);
1325 Type [] void_arg = { };
1326 object_getcurrent_void = GetMethod (
1327 ienumerator_type, "get_Current", void_arg);
1328 bool_movenext_void = GetMethod (
1329 ienumerator_type, "MoveNext", void_arg);
1330 void_reset_void = GetMethod (
1331 ienumerator_type, "Reset", void_arg);
1332 void_dispose_void = GetMethod (
1333 idisposable_type, "Dispose", void_arg);
1334 int_get_offset_to_string_data = GetMethod (
1335 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1336 int_array_get_length = GetMethod (
1337 array_type, "get_Length", void_arg);
1338 int_array_get_rank = GetMethod (
1339 array_type, "get_Rank", void_arg);
1340 ienumerable_getenumerator_void = GetMethod (
1341 ienumerable_type, "GetEnumerator", void_arg);
1346 Type [] int_arg = { int32_type };
1347 int_array_get_length_int = GetMethod (
1348 array_type, "GetLength", int_arg);
1349 int_array_get_upper_bound_int = GetMethod (
1350 array_type, "GetUpperBound", int_arg);
1351 int_array_get_lower_bound_int = GetMethod (
1352 array_type, "GetLowerBound", int_arg);
1355 // System.Array methods
1357 object_array_clone = GetMethod (
1358 array_type, "Clone", void_arg);
1359 Type [] array_int_arg = { array_type, int32_type };
1360 void_array_copyto_array_int = GetMethod (
1361 array_type, "CopyTo", array_int_arg);
1366 Type [] object_arg = { object_type };
1367 void_monitor_enter_object = GetMethod (
1368 monitor_type, "Enter", object_arg);
1369 void_monitor_exit_object = GetMethod (
1370 monitor_type, "Exit", object_arg);
1372 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1374 void_initializearray_array_fieldhandle = GetMethod (
1375 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1380 int_getlength_int = GetMethod (
1381 array_type, "GetLength", int_arg);
1384 // Decimal constructors
1386 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1387 void_decimal_ctor_five_args = GetConstructor (
1388 decimal_type, dec_arg);
1390 void_decimal_ctor_int_arg = GetConstructor (decimal_type, int_arg);
1395 cons_param_array_attribute = GetConstructor (param_array_type, void_arg);
1396 unverifiable_code_ctor = GetConstructor (unverifiable_code_type, void_arg);
1397 default_member_ctor = GetConstructor (default_member_type, string_);
1399 Type[] short_arg = { short_type };
1400 struct_layout_attribute_ctor = GetConstructor (struct_layout_attribute_type, short_arg);
1402 decimal_constant_attribute_ctor = GetConstructor (decimal_constant_attribute_type, new Type []
1403 { byte_type, byte_type, uint32_type, uint32_type, uint32_type } );
1409 compiler_generated_attr = new CustomAttributeBuilder (
1410 GetConstructor (compiler_generated_attr_type, void_arg), new object[0]);
1412 Type[] type_int_arg = { type_type, int32_type };
1413 fixed_buffer_attr_ctor = GetConstructor (fixed_buffer_attr_type, type_int_arg);
1416 object_ctor = GetConstructor (object_type, void_arg);
1418 InitGenericCodeHelpers ();
1421 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1424 /// This is the "old", non-cache based FindMembers() function. We cannot use
1425 /// the cache here because there is no member name argument.
1427 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1428 MemberFilter filter, object criteria)
1430 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1433 // `builder_to_declspace' contains all dynamic types.
1437 Timer.StartTimer (TimerType.FindMembers);
1438 list = decl.FindMembers (mt, bf, filter, criteria);
1439 Timer.StopTimer (TimerType.FindMembers);
1444 // We have to take care of arrays specially, because GetType on
1445 // a TypeBuilder array will return a Type, not a TypeBuilder,
1446 // and we can not call FindMembers on this type.
1448 if (t.IsSubclassOf (TypeManager.array_type))
1449 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1451 if (t is GenericTypeParameterBuilder) {
1452 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1454 Timer.StartTimer (TimerType.FindMembers);
1455 MemberList list = tparam.FindMembers (
1456 mt, bf | BindingFlags.DeclaredOnly, filter, criteria);
1457 Timer.StopTimer (TimerType.FindMembers);
1462 // Since FindMembers will not lookup both static and instance
1463 // members, we emulate this behaviour here.
1465 if ((bf & instance_and_static) == instance_and_static){
1466 MemberInfo [] i_members = t.FindMembers (
1467 mt, bf & ~BindingFlags.Static, filter, criteria);
1469 int i_len = i_members.Length;
1471 MemberInfo one = i_members [0];
1474 // If any of these are present, we are done!
1476 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1477 return new MemberList (i_members);
1480 MemberInfo [] s_members = t.FindMembers (
1481 mt, bf & ~BindingFlags.Instance, filter, criteria);
1483 int s_len = s_members.Length;
1484 if (i_len > 0 || s_len > 0)
1485 return new MemberList (i_members, s_members);
1488 return new MemberList (i_members);
1490 return new MemberList (s_members);
1494 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1499 /// This method is only called from within MemberLookup. It tries to use the member
1500 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1501 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1502 /// our return value will already contain all inherited members and the caller don't need
1503 /// to check base classes and interfaces anymore.
1505 private static MemberInfo [] MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1506 string name, out bool used_cache)
1511 // We have to take care of arrays specially, because GetType on
1512 // a TypeBuilder array will return a Type, not a TypeBuilder,
1513 // and we can not call FindMembers on this type.
1515 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1517 return TypeHandle.ArrayType.MemberCache.FindMembers (
1518 mt, bf, name, FilterWithClosure_delegate, null);
1522 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1523 // and we can ask the DeclSpace for the MemberCache.
1525 if (t is TypeBuilder) {
1526 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1527 cache = decl.MemberCache;
1530 // If this DeclSpace has a MemberCache, use it.
1533 if (cache != null) {
1535 return cache.FindMembers (
1536 mt, bf, name, FilterWithClosure_delegate, null);
1539 // If there is no MemberCache, we need to use the "normal" FindMembers.
1540 // Note, this is a VERY uncommon route!
1543 Timer.StartTimer (TimerType.FindMembers);
1544 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1545 FilterWithClosure_delegate, name);
1546 Timer.StopTimer (TimerType.FindMembers);
1548 return (MemberInfo []) list;
1551 if (t is GenericTypeParameterBuilder) {
1552 TypeParameter tparam = (TypeParameter) builder_to_type_param [t];
1555 Timer.StartTimer (TimerType.FindMembers);
1556 list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1557 FilterWithClosure_delegate, name);
1558 Timer.StopTimer (TimerType.FindMembers);
1560 return (MemberInfo []) list;
1564 // This call will always succeed. There is exactly one TypeHandle instance per
1565 // type, TypeHandle.GetMemberCache() will, if necessary, create a new one, and return
1566 // the corresponding MemberCache.
1568 cache = TypeHandle.GetMemberCache (t);
1571 return cache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1574 public static bool IsBuiltinType (Type t)
1576 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1577 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1578 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1579 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1585 public static bool IsBuiltinType (TypeContainer tc)
1587 return IsBuiltinType (tc.TypeBuilder);
1591 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1592 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1594 public static bool IsCLRType (Type t)
1596 if (t == object_type || t == int32_type || t == uint32_type ||
1597 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1598 t == char_type || t == short_type || t == bool_type ||
1599 t == sbyte_type || t == byte_type || t == ushort_type)
1605 public static bool IsDelegateType (Type t)
1607 if (t.IsGenericInstance)
1608 t = t.GetGenericTypeDefinition ();
1610 if (t.IsSubclassOf (TypeManager.delegate_type))
1616 public static bool IsEnumType (Type t)
1618 if (t.IsSubclassOf (TypeManager.enum_type))
1623 public static bool IsBuiltinOrEnum (Type t)
1625 if (IsBuiltinType (t))
1634 public static bool IsNullType (Type t)
1636 return t == null_type;
1640 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1642 public static bool IsUnmanagedType (Type t)
1644 if (IsBuiltinType (t) && t != TypeManager.string_type)
1653 if (IsValueType (t)){
1654 if (t is TypeBuilder){
1655 TypeContainer tc = LookupTypeContainer (t);
1657 if (tc.Fields != null){
1658 foreach (Field f in tc.Fields){
1659 if (f.FieldBuilder.IsStatic)
1661 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1667 FieldInfo [] fields = t.GetFields ();
1669 foreach (FieldInfo f in fields){
1672 if (!IsUnmanagedType (f.FieldType))
1682 public static bool IsValueType (Type t)
1684 return t.IsGenericParameter || t.IsValueType;
1687 public static bool IsInterfaceType (Type t)
1689 TypeContainer tc = (TypeContainer) builder_to_declspace [t];
1693 return tc.Kind == Kind.Interface;
1696 public static bool IsSubclassOf (Type type, Type base_type)
1698 TypeParameter tparam = LookupTypeParameter (type);
1699 TypeParameter pparam = LookupTypeParameter (base_type);
1701 if ((tparam != null) && (pparam != null)) {
1702 if (tparam == pparam)
1705 return tparam.IsSubclassOf (base_type);
1709 if (type.Equals (base_type))
1712 type = type.BaseType;
1713 } while (type != null);
1718 public static bool IsPrivateAccessible (Type type, Type parent)
1720 if (type.Equals (parent))
1723 if ((type is TypeBuilder) && type.IsGenericTypeDefinition && parent.IsGenericInstance) {
1725 // `a' is a generic type definition's TypeBuilder and `b' is a
1726 // generic instance of the same type.
1732 // void Test (Stack<T> stack) { }
1735 // The first argument of `Test' will be the generic instance
1736 // "Stack<!0>" - which is the same type than the "Stack" TypeBuilder.
1739 // We hit this via Closure.Filter() for gen-82.cs.
1741 if (type != parent.GetGenericTypeDefinition ())
1747 if (type.IsGenericInstance && parent.IsGenericInstance) {
1748 if (type.GetGenericTypeDefinition () != parent.GetGenericTypeDefinition ())
1757 public static bool IsFamilyAccessible (Type type, Type parent)
1759 TypeParameter tparam = LookupTypeParameter (type);
1760 TypeParameter pparam = LookupTypeParameter (parent);
1762 if ((tparam != null) && (pparam != null)) {
1763 if (tparam == pparam)
1766 return tparam.IsSubclassOf (parent);
1770 if (IsEqualGenericInstance (type, parent))
1773 type = type.BaseType;
1774 } while (type != null);
1780 // Checks whether `type' is a subclass or nested child of `base_type'.
1782 public static bool IsNestedFamilyAccessible (Type type, Type base_type)
1785 if (IsFamilyAccessible (type, base_type))
1788 // Handle nested types.
1789 type = type.DeclaringType;
1790 } while (type != null);
1796 // Checks whether `type' is a nested child of `parent'.
1798 public static bool IsNestedChildOf (Type type, Type parent)
1800 if (IsEqual (type, parent))
1803 type = type.DeclaringType;
1804 while (type != null) {
1805 if (IsEqual (type, parent))
1808 type = type.DeclaringType;
1815 // Do the right thing when returning the element type of an
1816 // array type based on whether we are compiling corlib or not
1818 public static Type GetElementType (Type t)
1820 if (RootContext.StdLib)
1821 return t.GetElementType ();
1823 return TypeToCoreType (t.GetElementType ());
1827 /// This method is not implemented by MS runtime for dynamic types
1829 public static bool HasElementType (Type t)
1831 return t.IsArray || t.IsPointer || t.IsByRef;
1835 /// Returns the User Defined Types
1837 public static ArrayList UserTypes {
1843 public static Hashtable TypeContainers {
1845 return typecontainers;
1849 static Hashtable builder_to_constant;
1851 public static void RegisterConstant (FieldBuilder fb, Const c)
1853 if (builder_to_constant == null)
1854 builder_to_constant = new PtrHashtable ();
1856 if (builder_to_constant.Contains (fb))
1859 builder_to_constant.Add (fb, c);
1862 public static Const LookupConstant (FieldBuilder fb)
1864 if (builder_to_constant == null)
1867 return (Const) builder_to_constant [fb];
1871 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1875 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1876 /// for anything which is dynamic, and we need this in a number of places,
1877 /// we register this information here, and use it afterwards.
1879 static public void RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1884 method_arguments.Add (mb, args);
1885 method_params.Add (mb, ip);
1888 static public ParameterData GetParameterData (MethodBase mb)
1890 object pd = method_params [mb];
1892 if (mb is MethodBuilder || mb is ConstructorBuilder)
1893 throw new InternalErrorException ("Argument for Method not registered" + mb);
1895 method_params [mb] = pd = new ReflectionParameters (mb);
1898 return (ParameterData) pd;
1902 /// Returns the argument types for a method based on its methodbase
1904 /// For dynamic methods, we use the compiler provided types, for
1905 /// methods from existing assemblies we load them from GetParameters,
1906 /// and insert them into the cache
1908 static public Type [] GetArgumentTypes (MethodBase mb)
1910 object t = method_arguments [mb];
1914 ParameterInfo [] pi = mb.GetParameters ();
1921 types = new Type [c];
1922 for (int i = 0; i < c; i++)
1923 types [i] = pi [i].ParameterType;
1925 method_arguments.Add (mb, types);
1930 /// Returns the argument types for an indexer based on its PropertyInfo
1932 /// For dynamic indexers, we use the compiler provided types, for
1933 /// indexers from existing assemblies we load them from GetParameters,
1934 /// and insert them into the cache
1936 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1938 if (indexer_arguments.Contains (indexer))
1939 return (Type []) indexer_arguments [indexer];
1940 else if (indexer is PropertyBuilder)
1941 // If we're a PropertyBuilder and not in the
1942 // `indexer_arguments' hash, then we're a property and
1946 ParameterInfo [] pi = indexer.GetIndexParameters ();
1947 // Property, not an indexer.
1951 Type [] types = new Type [c];
1953 for (int i = 0; i < c; i++)
1954 types [i] = pi [i].ParameterType;
1956 indexer_arguments.Add (indexer, types);
1962 // This is a workaround the fact that GetValue is not
1963 // supported for dynamic types
1965 static Hashtable fields = new Hashtable ();
1966 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1968 if (fields.Contains (fb))
1971 fields.Add (fb, value);
1976 static public object GetValue (FieldBuilder fb)
1981 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1982 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1984 if (fieldbuilders_to_fields.Contains (fb))
1987 fieldbuilders_to_fields.Add (fb, f);
1992 // The return value can be null; This will be the case for
1993 // auxiliary FieldBuilders created by the compiler that have no
1994 // real field being declared on the source code
1996 static public FieldBase GetField (FieldInfo fb)
1998 if (fb.DeclaringType.IsGenericInstance)
1999 fb = fb.Mono_GetGenericFieldDefinition ();
2001 return (FieldBase) fieldbuilders_to_fields [fb];
2004 static Hashtable events;
2006 static public void RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
2009 events = new Hashtable ();
2011 if (!events.Contains (eb)) {
2012 events.Add (eb, new Pair (add, remove));
2016 static public MethodInfo GetAddMethod (EventInfo ei)
2018 if (ei is MyEventBuilder) {
2019 Pair pair = (Pair) events [ei];
2021 return (MethodInfo) pair.First;
2023 return ei.GetAddMethod (true);
2026 static public MethodInfo GetRemoveMethod (EventInfo ei)
2028 if (ei is MyEventBuilder) {
2029 Pair pair = (Pair) events [ei];
2031 return (MethodInfo) pair.Second;
2033 return ei.GetRemoveMethod (true);
2036 static Hashtable priv_fields_events;
2038 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
2040 if (priv_fields_events == null)
2041 priv_fields_events = new Hashtable ();
2043 if (priv_fields_events.Contains (einfo))
2046 priv_fields_events.Add (einfo, builder);
2051 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
2053 if (priv_fields_events == null)
2056 return (MemberInfo) priv_fields_events [ei];
2059 static Hashtable properties;
2061 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
2063 if (properties == null)
2064 properties = new Hashtable ();
2066 if (properties.Contains (pb))
2069 properties.Add (pb, new Pair (get, set));
2074 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
2075 MethodBase set, Type[] args)
2077 if (!RegisterProperty (pb, get,set))
2080 indexer_arguments.Add (pb, args);
2085 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen)
2087 Hashtable hash = new Hashtable ();
2088 return CheckStructCycles (tc, seen, hash);
2091 public static bool CheckStructCycles (TypeContainer tc, Hashtable seen,
2094 if ((tc.Kind != Kind.Struct) || IsBuiltinType (tc))
2098 // `seen' contains all types we've already visited.
2100 if (seen.Contains (tc))
2102 seen.Add (tc, null);
2104 if (tc.Fields == null)
2107 foreach (FieldMember field in tc.Fields) {
2108 if (field.FieldBuilder == null || field.FieldBuilder.IsStatic)
2111 Type ftype = field.FieldBuilder.FieldType;
2112 TypeContainer ftc = LookupTypeContainer (ftype);
2116 if (hash.Contains (ftc)) {
2117 Report.Error (523, tc.Location,
2118 "Struct member `{0}.{1}' of type `{2}' " +
2119 "causes a cycle in the struct layout",
2120 tc.Name, field.Name, ftc.Name);
2125 // `hash' contains all types in the current path.
2127 hash.Add (tc, null);
2129 bool ok = CheckStructCycles (ftc, seen, hash);
2136 if (!seen.Contains (ftc))
2137 seen.Add (ftc, null);
2144 /// Given an array of interface types, expand and eliminate repeated ocurrences
2145 /// of an interface.
2149 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2152 public static Type[] ExpandInterfaces (EmitContext ec, TypeExpr [] base_interfaces)
2154 ArrayList new_ifaces = new ArrayList ();
2156 foreach (TypeExpr iface in base_interfaces){
2157 TypeExpr texpr = iface.ResolveAsTypeTerminal (ec);
2161 if (!new_ifaces.Contains (texpr.Type))
2162 new_ifaces.Add (texpr.Type);
2164 Type [] implementing = texpr.Type.GetInterfaces ();
2166 foreach (Type imp in implementing){
2167 if (!new_ifaces.Contains (imp))
2168 new_ifaces.Add (imp);
2171 Type [] ret = new Type [new_ifaces.Count];
2172 new_ifaces.CopyTo (ret, 0);
2176 static PtrHashtable iface_cache = new PtrHashtable ();
2179 /// This function returns the interfaces in the type `t'. Works with
2180 /// both types and TypeBuilders.
2182 public static Type [] GetInterfaces (Type t)
2185 Type [] cached = iface_cache [t] as Type [];
2190 // The reason for catching the Array case is that Reflection.Emit
2191 // will not return a TypeBuilder for Array types of TypeBuilder types,
2192 // but will still throw an exception if we try to call GetInterfaces
2195 // Since the array interfaces are always constant, we return those for
2200 t = TypeManager.array_type;
2202 if (t is TypeBuilder){
2203 Type [] base_ifaces;
2205 if (t.BaseType == null)
2206 base_ifaces = NoTypes;
2208 base_ifaces = GetInterfaces (t.BaseType);
2209 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2210 if (type_ifaces == null)
2211 type_ifaces = NoTypes;
2213 int base_count = base_ifaces.Length;
2214 Type [] result = new Type [base_count + type_ifaces.Length];
2215 base_ifaces.CopyTo (result, 0);
2216 type_ifaces.CopyTo (result, base_count);
2218 iface_cache [t] = result;
2220 } else if (t is GenericTypeParameterBuilder){
2221 Type[] type_ifaces = (Type []) builder_to_ifaces [t];
2222 if (type_ifaces == null)
2223 type_ifaces = NoTypes;
2225 iface_cache [t] = type_ifaces;
2228 Type[] ifaces = t.GetInterfaces ();
2229 iface_cache [t] = ifaces;
2235 // gets the interfaces that are declared explicitly on t
2237 public static Type [] GetExplicitInterfaces (TypeBuilder t)
2239 return (Type []) builder_to_ifaces [t];
2243 /// The following is used to check if a given type implements an interface.
2244 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2246 public static bool ImplementsInterface (Type t, Type iface)
2251 // FIXME OPTIMIZATION:
2252 // as soon as we hit a non-TypeBuiler in the interface
2253 // chain, we could return, as the `Type.GetInterfaces'
2254 // will return all the interfaces implement by the type
2258 interfaces = GetInterfaces (t);
2260 if (interfaces != null){
2261 foreach (Type i in interfaces){
2268 } while (t != null);
2273 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2275 // This is a custom version of Convert.ChangeType() which works
2276 // with the TypeBuilder defined types when compiling corlib.
2277 public static object ChangeType (object value, Type conversionType, out bool error)
2279 IConvertible convert_value = value as IConvertible;
2281 if (convert_value == null){
2287 // We must use Type.Equals() here since `conversionType' is
2288 // the TypeBuilder created version of a system type and not
2289 // the system type itself. You cannot use Type.GetTypeCode()
2290 // on such a type - it'd always return TypeCode.Object.
2294 if (conversionType.Equals (typeof (Boolean)))
2295 return (object)(convert_value.ToBoolean (nf_provider));
2296 else if (conversionType.Equals (typeof (Byte)))
2297 return (object)(convert_value.ToByte (nf_provider));
2298 else if (conversionType.Equals (typeof (Char)))
2299 return (object)(convert_value.ToChar (nf_provider));
2300 else if (conversionType.Equals (typeof (DateTime)))
2301 return (object)(convert_value.ToDateTime (nf_provider));
2302 else if (conversionType.Equals (TypeManager.decimal_type)) // typeof (Decimal)))
2303 return (object)(convert_value.ToDecimal (nf_provider));
2304 else if (conversionType.Equals (typeof (Double)))
2305 return (object)(convert_value.ToDouble (nf_provider));
2306 else if (conversionType.Equals (typeof (Int16)))
2307 return (object)(convert_value.ToInt16 (nf_provider));
2308 else if (conversionType.Equals (typeof (Int32)))
2309 return (object)(convert_value.ToInt32 (nf_provider));
2310 else if (conversionType.Equals (typeof (Int64)))
2311 return (object)(convert_value.ToInt64 (nf_provider));
2312 else if (conversionType.Equals (typeof (SByte)))
2313 return (object)(convert_value.ToSByte (nf_provider));
2314 else if (conversionType.Equals (typeof (Single)))
2315 return (object)(convert_value.ToSingle (nf_provider));
2316 else if (conversionType.Equals (typeof (String)))
2317 return (object)(convert_value.ToString (nf_provider));
2318 else if (conversionType.Equals (typeof (UInt16)))
2319 return (object)(convert_value.ToUInt16 (nf_provider));
2320 else if (conversionType.Equals (typeof (UInt32)))
2321 return (object)(convert_value.ToUInt32 (nf_provider));
2322 else if (conversionType.Equals (typeof (UInt64)))
2323 return (object)(convert_value.ToUInt64 (nf_provider));
2324 else if (conversionType.Equals (typeof (Object)))
2325 return (object)(value);
2335 // This is needed, because enumerations from assemblies
2336 // do not report their underlyingtype, but they report
2339 public static Type EnumToUnderlying (Type t)
2341 if (t == TypeManager.enum_type)
2344 t = t.UnderlyingSystemType;
2345 if (!TypeManager.IsEnumType (t))
2348 if (t is TypeBuilder) {
2349 // slow path needed to compile corlib
2350 if (t == TypeManager.bool_type ||
2351 t == TypeManager.byte_type ||
2352 t == TypeManager.sbyte_type ||
2353 t == TypeManager.char_type ||
2354 t == TypeManager.short_type ||
2355 t == TypeManager.ushort_type ||
2356 t == TypeManager.int32_type ||
2357 t == TypeManager.uint32_type ||
2358 t == TypeManager.int64_type ||
2359 t == TypeManager.uint64_type)
2361 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2363 TypeCode tc = Type.GetTypeCode (t);
2366 case TypeCode.Boolean:
2367 return TypeManager.bool_type;
2369 return TypeManager.byte_type;
2370 case TypeCode.SByte:
2371 return TypeManager.sbyte_type;
2373 return TypeManager.char_type;
2374 case TypeCode.Int16:
2375 return TypeManager.short_type;
2376 case TypeCode.UInt16:
2377 return TypeManager.ushort_type;
2378 case TypeCode.Int32:
2379 return TypeManager.int32_type;
2380 case TypeCode.UInt32:
2381 return TypeManager.uint32_type;
2382 case TypeCode.Int64:
2383 return TypeManager.int64_type;
2384 case TypeCode.UInt64:
2385 return TypeManager.uint64_type;
2387 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2391 // When compiling corlib and called with one of the core types, return
2392 // the corresponding typebuilder for that type.
2394 public static Type TypeToCoreType (Type t)
2396 if (RootContext.StdLib || (t is TypeBuilder))
2399 TypeCode tc = Type.GetTypeCode (t);
2402 case TypeCode.Boolean:
2403 return TypeManager.bool_type;
2405 return TypeManager.byte_type;
2406 case TypeCode.SByte:
2407 return TypeManager.sbyte_type;
2409 return TypeManager.char_type;
2410 case TypeCode.Int16:
2411 return TypeManager.short_type;
2412 case TypeCode.UInt16:
2413 return TypeManager.ushort_type;
2414 case TypeCode.Int32:
2415 return TypeManager.int32_type;
2416 case TypeCode.UInt32:
2417 return TypeManager.uint32_type;
2418 case TypeCode.Int64:
2419 return TypeManager.int64_type;
2420 case TypeCode.UInt64:
2421 return TypeManager.uint64_type;
2422 case TypeCode.Single:
2423 return TypeManager.float_type;
2424 case TypeCode.Double:
2425 return TypeManager.double_type;
2426 case TypeCode.String:
2427 return TypeManager.string_type;
2428 case TypeCode.Decimal:
2429 return TypeManager.decimal_type;
2431 if (t == typeof (void))
2432 return TypeManager.void_type;
2433 if (t == typeof (object))
2434 return TypeManager.object_type;
2435 if (t == typeof (System.Type))
2436 return TypeManager.type_type;
2437 if (t == typeof (System.IntPtr))
2438 return TypeManager.intptr_type;
2444 /// Utility function that can be used to probe whether a type
2445 /// is managed or not.
2447 public static bool VerifyUnManaged (Type t, Location loc)
2449 if (t.IsValueType || t.IsPointer){
2451 // FIXME: this is more complex, we actually need to
2452 // make sure that the type does not contain any
2458 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2459 // We need this explicit check here to make it work when
2460 // compiling corlib.
2465 "Cannot take the address or size of a variable of a managed type ('" +
2466 CSharpName (t) + "')");
2471 /// Returns the name of the indexer in a given type.
2474 /// The default is not always `Item'. The user can change this behaviour by
2475 /// using the IndexerNameAttribute in the container.
2477 /// For example, the String class indexer is named `Chars' not `Item'
2479 public static string IndexerPropertyName (Type t)
2481 if (t.IsGenericInstance)
2482 t = t.GetGenericTypeDefinition ();
2484 if (t is TypeBuilder) {
2485 TypeContainer tc = t.IsInterface ? LookupInterface (t) : LookupTypeContainer (t);
2486 return tc == null ? TypeContainer.DefaultIndexerName : tc.IndexerName;
2489 System.Attribute attr = System.Attribute.GetCustomAttribute (
2490 t, TypeManager.default_member_type);
2492 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2493 return dma.MemberName;
2496 return TypeContainer.DefaultIndexerName;
2499 static MethodInfo declare_local_method = null;
2501 public static LocalBuilder DeclareLocalPinned (ILGenerator ig, Type t)
2503 if (declare_local_method == null){
2504 declare_local_method = typeof (ILGenerator).GetMethod (
2506 BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,
2508 new Type [] { typeof (Type), typeof (bool)},
2510 if (declare_local_method == null){
2511 Report.Warning (-24, new Location (-1),
2512 "This version of the runtime does not support making pinned local variables. " +
2513 "This code may cause errors on a runtime with a moving GC");
2514 return ig.DeclareLocal (t);
2517 return (LocalBuilder) declare_local_method.Invoke (ig, new object [] { t, true });
2521 // Returns whether the array of memberinfos contains the given method
2523 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2525 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2527 foreach (MethodBase method in array) {
2528 if (method.Name != new_method.Name)
2531 if (method is MethodInfo && new_method is MethodInfo)
2532 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2536 Type [] old_args = TypeManager.GetArgumentTypes (method);
2537 int old_count = old_args.Length;
2540 if (new_args.Length != old_count)
2543 for (i = 0; i < old_count; i++){
2544 if (old_args [i] != new_args [i])
2557 // We copy methods from `new_members' into `target_list' if the signature
2558 // for the method from in the new list does not exist in the target_list
2560 // The name is assumed to be the same.
2562 public static ArrayList CopyNewMethods (ArrayList target_list, IList new_members)
2564 if (target_list == null){
2565 target_list = new ArrayList ();
2567 foreach (MemberInfo mi in new_members){
2568 if (mi is MethodBase)
2569 target_list.Add (mi);
2574 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2575 target_list.CopyTo (target_array, 0);
2577 foreach (MemberInfo mi in new_members){
2578 MethodBase new_method = (MethodBase) mi;
2580 if (!ArrayContainsMethod (target_array, new_method))
2581 target_list.Add (new_method);
2586 #region MemberLookup implementation
2589 // Whether we allow private members in the result (since FindMembers
2590 // uses NonPublic for both protected and private), we need to distinguish.
2593 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2598 internal class Closure {
2599 internal bool private_ok;
2601 // Who is invoking us and which type is being queried currently.
2602 internal Type invocation_type;
2603 internal Type qualifier_type;
2605 // The assembly that defines the type is that is calling us
2606 internal Assembly invocation_assembly;
2607 internal IList almost_match;
2609 private bool CheckValidFamilyAccess (bool is_static, MemberInfo m)
2611 if (invocation_type == null)
2614 Debug.Assert (IsNestedFamilyAccessible (invocation_type, m.DeclaringType));
2619 // A nested class has access to all the protected members visible
2621 if (qualifier_type != null
2622 && TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2625 if (invocation_type == m.DeclaringType
2626 || invocation_type.IsSubclassOf (m.DeclaringType)) {
2627 // Although a derived class can access protected members of
2628 // its base class it cannot do so through an instance of the
2629 // base class (CS1540).
2630 // => Ancestry should be: declaring_type ->* invocation_type
2631 // ->* qualified_type
2632 if (qualifier_type == null
2633 || qualifier_type == invocation_type
2634 || qualifier_type.IsSubclassOf (invocation_type))
2638 if (almost_match != null)
2639 almost_match.Add (m);
2643 bool Filter (MethodBase mb, object filter_criteria)
2645 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2647 if (ma == MethodAttributes.Private)
2648 return private_ok ||
2649 IsPrivateAccessible (invocation_type, mb.DeclaringType) ||
2650 IsNestedChildOf (invocation_type, mb.DeclaringType);
2653 // FamAndAssem requires that we not only derivate, but we are on the
2656 if (ma == MethodAttributes.FamANDAssem){
2657 if (invocation_assembly != mb.DeclaringType.Assembly)
2661 // Assembly and FamORAssem succeed if we're in the same assembly.
2662 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2663 if (invocation_assembly == mb.DeclaringType.Assembly)
2667 // We already know that we aren't in the same assembly.
2668 if (ma == MethodAttributes.Assembly)
2671 // Family and FamANDAssem require that we derive.
2672 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2673 if (invocation_type == null)
2676 if (!IsNestedFamilyAccessible (invocation_type, mb.DeclaringType))
2679 // Although a derived class can access protected members of its base class
2680 // it cannot do so through an instance of the base class (CS1540).
2681 if (!mb.IsStatic && (qualifier_type != null) &&
2682 !IsEqualGenericInstance (invocation_type, qualifier_type) &&
2683 TypeManager.IsFamilyAccessible (invocation_type, qualifier_type) &&
2684 !TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2694 bool Filter (FieldInfo fi, object filter_criteria)
2696 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2698 if (fa == FieldAttributes.Private)
2699 return private_ok ||
2700 IsPrivateAccessible (invocation_type, fi.DeclaringType) ||
2701 IsNestedChildOf (invocation_type, fi.DeclaringType);
2704 // FamAndAssem requires that we not only derivate, but we are on the
2707 if (fa == FieldAttributes.FamANDAssem){
2708 if (invocation_assembly != fi.DeclaringType.Assembly)
2712 // Assembly and FamORAssem succeed if we're in the same assembly.
2713 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2714 if (invocation_assembly == fi.DeclaringType.Assembly)
2718 // We already know that we aren't in the same assembly.
2719 if (fa == FieldAttributes.Assembly)
2722 // Family and FamANDAssem require that we derive.
2723 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2724 if (invocation_type == null)
2727 if (!IsNestedFamilyAccessible (invocation_type, fi.DeclaringType))
2730 // Although a derived class can access protected members of its base class
2731 // it cannot do so through an instance of the base class (CS1540).
2732 if (!fi.IsStatic && (qualifier_type != null) &&
2733 !IsEqualGenericInstance (invocation_type, qualifier_type) &&
2734 TypeManager.IsFamilyAccessible (invocation_type, qualifier_type) &&
2735 !TypeManager.IsNestedChildOf (invocation_type, qualifier_type))
2746 // This filter filters by name + whether it is ok to include private
2747 // members in the search
2749 internal bool Filter (MemberInfo m, object filter_criteria)
2752 // Hack: we know that the filter criteria will always be in the
2753 // `closure' // fields.
2756 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2759 if (((qualifier_type == null) || (qualifier_type == invocation_type)) &&
2760 (invocation_type != null) &&
2761 IsPrivateAccessible (m.DeclaringType, invocation_type))
2765 // Ugly: we need to find out the type of `m', and depending
2766 // on this, tell whether we accept or not
2768 if (m is MethodBase)
2769 return Filter ((MethodBase) m, filter_criteria);
2772 return Filter ((FieldInfo) m, filter_criteria);
2775 // EventInfos and PropertyInfos, return true because they lack
2776 // permission information, so we need to check later on the methods.
2782 static Closure closure = new Closure ();
2783 static MemberFilter FilterWithClosure_delegate = new MemberFilter (closure.Filter);
2786 // Looks up a member called `name' in the `queried_type'. This lookup
2787 // is done by code that is contained in the definition for `invocation_type'
2788 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2790 // `invocation_type' is used to check whether we're allowed to access the requested
2791 // member wrt its protection level.
2793 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2794 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2795 // is B and qualifier_type is A). This is used to do the CS1540 check.
2797 // When resolving a SimpleName, `qualifier_type' is null.
2799 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2800 // the same than `queried_type' - except when we're being called from BaseAccess;
2801 // in this case, `invocation_type' is the current type and `queried_type' the base
2802 // type, so this'd normally trigger a CS1540.
2804 // The binding flags are `bf' and the kind of members being looked up are `mt'
2806 // The return value always includes private members which code in `invocation_type'
2807 // is allowed to access (using the specified `qualifier_type' if given); only use
2808 // BindingFlags.NonPublic to bypass the permission check.
2810 // The 'almost_match' argument is used for reporting error CS1540.
2812 // Returns an array of a single element for everything but Methods/Constructors
2813 // that might return multiple matches.
2815 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2816 Type queried_type, MemberTypes mt,
2817 BindingFlags original_bf, string name, IList almost_match)
2819 Timer.StartTimer (TimerType.MemberLookup);
2821 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2822 queried_type, mt, original_bf, name, almost_match);
2824 Timer.StopTimer (TimerType.MemberLookup);
2829 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2830 Type queried_type, MemberTypes mt,
2831 BindingFlags original_bf, string name, IList almost_match)
2833 BindingFlags bf = original_bf;
2835 ArrayList method_list = null;
2836 Type current_type = queried_type;
2837 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2838 bool skip_iface_check = true, used_cache = false;
2839 bool always_ok_flag = false;
2841 closure.invocation_type = invocation_type;
2842 closure.invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2843 closure.qualifier_type = qualifier_type;
2844 closure.almost_match = almost_match;
2847 // If we are a nested class, we always have access to our container
2850 if (invocation_type != null){
2851 string invocation_name = invocation_type.FullName;
2852 if ((invocation_name != null) && (invocation_name.IndexOf ('+') != -1)){
2853 string container = queried_type.FullName + "+";
2854 int container_length = container.Length;
2856 if (invocation_name.Length > container_length){
2857 string shared = invocation_name.Substring (0, container_length);
2859 if (shared == container)
2860 always_ok_flag = true;
2865 // This is from the first time we find a method
2866 // in most cases, we do not actually find a method in the base class
2867 // so we can just ignore it, and save the arraylist allocation
2868 MemberInfo [] first_members_list = null;
2869 bool use_first_members_list = false;
2875 // `NonPublic' is lame, because it includes both protected and
2876 // private methods, so we need to control this behavior by
2877 // explicitly tracking if a private method is ok or not.
2879 // The possible cases are:
2880 // public, private and protected (internal does not come into the
2883 if ((invocation_type != null) &&
2884 ((invocation_type == current_type) ||
2885 IsNestedChildOf (invocation_type, current_type)) ||
2887 bf = original_bf | BindingFlags.NonPublic;
2891 closure.private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2893 Timer.StopTimer (TimerType.MemberLookup);
2895 list = MemberLookup_FindMembers (
2896 current_type, mt, bf, name, out used_cache);
2898 Timer.StartTimer (TimerType.MemberLookup);
2901 // When queried for an interface type, the cache will automatically check all
2902 // inherited members, so we don't need to do this here. However, this only
2903 // works if we already used the cache in the first iteration of this loop.
2905 // If we used the cache in any further iteration, we can still terminate the
2906 // loop since the cache always looks in all base classes.
2912 skip_iface_check = false;
2914 if (current_type == TypeManager.object_type)
2917 current_type = current_type.BaseType;
2920 // This happens with interfaces, they have a null
2921 // basetype. Look members up in the Object class.
2923 if (current_type == null) {
2924 current_type = TypeManager.object_type;
2929 if (list.Length == 0)
2933 // Events and types are returned by both `static' and `instance'
2934 // searches, which means that our above FindMembers will
2935 // return two copies of the same.
2937 if (list.Length == 1 && !(list [0] is MethodBase)){
2942 // Multiple properties: we query those just to find out the indexer
2945 if (list [0] is PropertyInfo)
2949 // We found an event: the cache lookup returns both the event and
2950 // its private field.
2952 if (list [0] is EventInfo) {
2953 if ((list.Length == 2) && (list [1] is FieldInfo))
2954 return new MemberInfo [] { list [0] };
2961 // We found methods, turn the search into "method scan"
2965 if (first_members_list != null) {
2966 if (use_first_members_list) {
2967 method_list = CopyNewMethods (method_list, first_members_list);
2968 use_first_members_list = false;
2971 method_list = CopyNewMethods (method_list, list);
2973 first_members_list = list;
2974 use_first_members_list = true;
2976 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2978 } while (searching);
2980 if (use_first_members_list) {
2981 foreach (MemberInfo mi in first_members_list) {
2982 if (! (mi is MethodBase)) {
2983 method_list = CopyNewMethods (method_list, first_members_list);
2984 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2987 return (MemberInfo []) first_members_list;
2990 if (method_list != null && method_list.Count > 0) {
2991 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2994 // This happens if we already used the cache in the first iteration, in this case
2995 // the cache already looked in all interfaces.
2997 if (skip_iface_check)
3001 // Interfaces do not list members they inherit, so we have to
3004 if (!queried_type.IsInterface)
3007 if (queried_type.IsArray)
3008 queried_type = TypeManager.array_type;
3010 Type [] ifaces = GetInterfaces (queried_type);
3014 foreach (Type itype in ifaces){
3017 x = MemberLookup (null, null, itype, mt, bf, name, null);
3025 // Tests whether external method is really special
3026 public static bool IsSpecialMethod (MethodBase mb)
3028 string name = mb.Name;
3029 if (name.StartsWith ("get_") || name.StartsWith ("set_"))
3030 return mb.DeclaringType.GetProperty (name.Substring (4)) != null;
3032 if (name.StartsWith ("add_"))
3033 return mb.DeclaringType.GetEvent (name.Substring (4)) != null;
3035 if (name.StartsWith ("remove_"))
3036 return mb.DeclaringType.GetEvent (name.Substring (7)) != null;
3038 if (name.StartsWith ("op_")){
3039 foreach (string oname in Unary.oper_names) {
3044 foreach (string oname in Binary.oper_names) {
3057 /// There is exactly one instance of this class per type.
3059 public sealed class TypeHandle : IMemberContainer {
3060 public readonly IMemberContainer BaseType;
3062 readonly int id = ++next_id;
3063 static int next_id = 0;
3066 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3067 /// a TypeHandle yet, a new instance of it is created. This static method
3068 /// ensures that we'll only have one TypeHandle instance per type.
3070 private static TypeHandle GetTypeHandle (Type t)
3072 TypeHandle handle = (TypeHandle) type_hash [t];
3076 handle = new TypeHandle (t);
3077 type_hash.Add (t, handle);
3081 public static MemberCache GetMemberCache (Type t)
3083 return GetTypeHandle (t).MemberCache;
3086 public static void CleanUp ()
3092 /// Returns the TypeHandle for TypeManager.object_type.
3094 public static IMemberContainer ObjectType {
3096 if (object_type != null)
3099 object_type = GetTypeHandle (TypeManager.object_type);
3106 /// Returns the TypeHandle for TypeManager.array_type.
3108 public static IMemberContainer ArrayType {
3110 if (array_type != null)
3113 array_type = GetTypeHandle (TypeManager.array_type);
3119 private static PtrHashtable type_hash = new PtrHashtable ();
3121 private static TypeHandle object_type = null;
3122 private static TypeHandle array_type = null;
3125 private string full_name;
3126 private bool is_interface;
3127 private MemberCache member_cache;
3128 private MemberCache base_cache;
3130 private TypeHandle (Type type)
3133 full_name = type.FullName != null ? type.FullName : type.Name;
3134 if (type.BaseType != null) {
3135 base_cache = TypeManager.LookupMemberCache (type.BaseType);
3136 BaseType = base_cache.Container;
3137 } else if (type.IsInterface)
3138 base_cache = TypeManager.LookupBaseInterfacesCache (type);
3139 this.is_interface = type.IsInterface || type.IsGenericParameter;
3140 this.member_cache = new MemberCache (this);
3143 // IMemberContainer methods
3145 public string Name {
3157 public MemberCache BaseCache {
3163 public bool IsInterface {
3165 return is_interface;
3169 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3171 MemberInfo [] members;
3172 if (type is GenericTypeParameterBuilder)
3173 return MemberList.Empty;
3174 if (mt == MemberTypes.Event)
3175 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3177 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3179 Array.Reverse (members);
3181 return new MemberList (members);
3184 // IMemberFinder methods
3186 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3187 MemberFilter filter, object criteria)
3189 return new MemberList (member_cache.FindMembers (mt, bf, name, filter, criteria));
3192 public MemberCache MemberCache {
3194 return member_cache;
3198 public override string ToString ()
3200 if (BaseType != null)
3201 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3203 return "TypeHandle (" + id + "," + Name + ")";