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 default_member_type;
67 static public Type iasyncresult_type;
68 static public Type asynccallback_type;
69 static public Type intptr_type;
70 static public Type monitor_type;
71 static public Type runtime_field_handle_type;
72 static public Type attribute_type;
73 static public Type attribute_usage_type;
74 static public Type dllimport_type;
75 static public Type unverifiable_code_type;
76 static public Type methodimpl_attr_type;
77 static public Type marshal_as_attr_type;
78 static public Type new_constraint_attr_type;
79 static public Type param_array_type;
80 static public Type guid_attr_type;
81 static public Type void_ptr_type;
82 static public Type indexer_name_type;
83 static public Type exception_type;
84 static public Type activator_type;
85 static public Type invalid_operation_exception_type;
86 static public object obsolete_attribute_type;
87 static public object conditional_attribute_type;
88 static public Type in_attribute_type;
91 // An empty array of types
93 static public Type [] NoTypes;
94 static public TypeExpr [] NoTypeExprs;
98 // Expressions representing the internal types. Used during declaration
101 static public TypeExpr system_object_expr, system_string_expr;
102 static public TypeExpr system_boolean_expr, system_decimal_expr;
103 static public TypeExpr system_single_expr, system_double_expr;
104 static public TypeExpr system_sbyte_expr, system_byte_expr;
105 static public TypeExpr system_int16_expr, system_uint16_expr;
106 static public TypeExpr system_int32_expr, system_uint32_expr;
107 static public TypeExpr system_int64_expr, system_uint64_expr;
108 static public TypeExpr system_char_expr, system_void_expr;
109 static public TypeExpr system_asynccallback_expr;
110 static public TypeExpr system_iasyncresult_expr;
111 static public TypeExpr system_valuetype_expr;
114 // This is only used when compiling corlib
116 static public Type system_int32_type;
117 static public Type system_array_type;
118 static public Type system_type_type;
119 static public Type system_assemblybuilder_type;
120 static public MethodInfo system_int_array_get_length;
121 static public MethodInfo system_int_array_get_rank;
122 static public MethodInfo system_object_array_clone;
123 static public MethodInfo system_int_array_get_length_int;
124 static public MethodInfo system_int_array_get_lower_bound_int;
125 static public MethodInfo system_int_array_get_upper_bound_int;
126 static public MethodInfo system_void_array_copyto_array_int;
130 // Internal, not really used outside
132 static Type runtime_helpers_type;
135 // These methods are called by code generated by the compiler
137 static public MethodInfo string_concat_string_string;
138 static public MethodInfo string_concat_string_string_string;
139 static public MethodInfo string_concat_string_string_string_string;
140 static public MethodInfo string_concat_object_object;
141 static public MethodInfo string_isinterneted_string;
142 static public MethodInfo system_type_get_type_from_handle;
143 static public MethodInfo object_getcurrent_void;
144 static public MethodInfo bool_movenext_void;
145 static public MethodInfo ienumerable_getenumerator_void;
146 static public MethodInfo void_reset_void;
147 static public MethodInfo void_dispose_void;
148 static public MethodInfo void_monitor_enter_object;
149 static public MethodInfo void_monitor_exit_object;
150 static public MethodInfo void_initializearray_array_fieldhandle;
151 static public MethodInfo int_getlength_int;
152 static public MethodInfo delegate_combine_delegate_delegate;
153 static public MethodInfo delegate_remove_delegate_delegate;
154 static public MethodInfo int_get_offset_to_string_data;
155 static public MethodInfo int_array_get_length;
156 static public MethodInfo int_array_get_rank;
157 static public MethodInfo object_array_clone;
158 static public MethodInfo int_array_get_length_int;
159 static public MethodInfo int_array_get_lower_bound_int;
160 static public MethodInfo int_array_get_upper_bound_int;
161 static public MethodInfo void_array_copyto_array_int;
162 static public MethodInfo activator_create_instance;
165 // The attribute constructors.
167 static public ConstructorInfo object_ctor;
168 static public ConstructorInfo cons_param_array_attribute;
169 static public ConstructorInfo void_decimal_ctor_five_args;
170 static public ConstructorInfo unverifiable_code_ctor;
171 static public ConstructorInfo invalid_operation_ctor;
174 // Holds the Array of Assemblies that have been loaded
175 // (either because it is the default or the user used the
176 // -r command line option)
178 static Assembly [] assemblies;
181 // Keeps a list of modules. We used this to do lookups
182 // on the module using GetType -- needed for arrays
184 static Module [] modules;
187 // This is the type_cache from the assemblies to avoid
188 // hitting System.Reflection on every lookup.
190 static Hashtable types;
193 // This is used to hotld the corresponding TypeContainer objects
194 // since we need this in FindMembers
196 static Hashtable typecontainers;
199 // Keeps track of those types that are defined by the
202 static ArrayList user_types;
204 static PtrHashtable builder_to_declspace;
207 // Tracks the interfaces implemented by typebuilders. We only
208 // enter those who do implement or or more interfaces
210 static PtrHashtable builder_to_ifaces;
213 // Tracks the generic parameters.
215 static PtrHashtable builder_to_type_param;
218 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
219 // the arguments to the method
221 static Hashtable method_arguments;
224 // Maps PropertyBuilder to a Type array that contains
225 // the arguments to the indexer
227 static Hashtable indexer_arguments;
230 // Maybe `method_arguments' should be replaced and only
231 // method_internal_params should be kept?
233 static Hashtable method_internal_params;
236 // Keeps track of attribute types
239 static Hashtable builder_to_attr;
242 // Keeps track of methods
245 static Hashtable builder_to_method;
252 public static void CleanUp ()
254 // Lets get everything clean so that we can collect before generating code
258 typecontainers = null;
260 builder_to_declspace = null;
261 builder_to_ifaces = null;
262 method_arguments = null;
263 indexer_arguments = null;
264 method_internal_params = null;
265 builder_to_attr = null;
266 builder_to_method = null;
267 builder_to_type_param = null;
271 negative_hits = null;
272 attr_to_allowmult = null;
273 builder_to_constant = null;
274 fieldbuilders_to_fields = null;
276 priv_fields_events = null;
279 TypeHandle.CleanUp ();
283 /// A filter for Findmembers that uses the Signature object to
286 static bool SignatureFilter (MemberInfo mi, object criteria)
288 Signature sig = (Signature) criteria;
290 if (!(mi is MethodBase))
293 if (mi.Name != sig.name)
296 int count = sig.args.Length;
298 if (mi is MethodBuilder || mi is ConstructorBuilder){
299 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
301 if (candidate_args.Length != count)
304 for (int i = 0; i < count; i++)
305 if (candidate_args [i] != sig.args [i])
310 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
312 if (pars.Length != count)
315 for (int i = 0; i < count; i++)
316 if (pars [i].ParameterType != sig.args [i])
322 // A delegate that points to the filter above.
323 static MemberFilter signature_filter;
326 // These are expressions that represent some of the internal data types, used
329 static void InitExpressionTypes ()
331 system_object_expr = new TypeLookupExpression ("System.Object");
332 system_string_expr = new TypeLookupExpression ("System.String");
333 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
334 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
335 system_single_expr = new TypeLookupExpression ("System.Single");
336 system_double_expr = new TypeLookupExpression ("System.Double");
337 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
338 system_byte_expr = new TypeLookupExpression ("System.Byte");
339 system_int16_expr = new TypeLookupExpression ("System.Int16");
340 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
341 system_int32_expr = new TypeLookupExpression ("System.Int32");
342 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
343 system_int64_expr = new TypeLookupExpression ("System.Int64");
344 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
345 system_char_expr = new TypeLookupExpression ("System.Char");
346 system_void_expr = new TypeLookupExpression ("System.Void");
347 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
348 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
349 system_valuetype_expr = new TypeLookupExpression ("System.ValueType");
352 static TypeManager ()
354 assemblies = new Assembly [0];
356 user_types = new ArrayList ();
358 types = new Hashtable ();
359 typecontainers = new Hashtable ();
361 builder_to_declspace = new PtrHashtable ();
362 builder_to_attr = new PtrHashtable ();
363 builder_to_method = new PtrHashtable ();
364 method_arguments = new PtrHashtable ();
365 method_internal_params = new PtrHashtable ();
366 indexer_arguments = new PtrHashtable ();
367 builder_to_ifaces = new PtrHashtable ();
368 builder_to_type_param = new PtrHashtable ();
370 NoTypes = new Type [0];
371 NoTypeExprs = new TypeExpr [0];
373 signature_filter = new MemberFilter (SignatureFilter);
374 InitExpressionTypes ();
377 public static void HandleDuplicate (string name, Type t)
379 Type prev = (Type) types [name];
380 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
384 // This probably never happens, as we catch this before
386 Report.Error (-17, "The type `" + name + "' has already been defined.");
390 tc = builder_to_declspace [t] as TypeContainer;
393 1595, "The type `" + name + "' is defined in an existing assembly;"+
394 " Using the new definition from: " + tc.Location);
397 1595, "The type `" + name + "' is defined in an existing assembly;");
400 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
406 public static void AddUserType (string name, TypeBuilder t, TypeExpr[] ifaces)
411 HandleDuplicate (name, t);
416 builder_to_ifaces [t] = ifaces;
420 // This entry point is used by types that we define under the covers
422 public static void RegisterBuilder (TypeBuilder tb, TypeExpr [] ifaces)
425 builder_to_ifaces [tb] = ifaces;
428 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, TypeExpr [] ifaces)
430 builder_to_declspace.Add (t, tc);
431 typecontainers.Add (name, tc);
432 AddUserType (name, t, ifaces);
435 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
440 HandleDuplicate (name, t);
443 builder_to_declspace.Add (t, del);
446 public static void AddEnumType (string name, TypeBuilder t, Enum en)
451 HandleDuplicate (name, t);
453 builder_to_declspace.Add (t, en);
456 public static void AddUserInterface (string name, TypeBuilder t, Interface i, TypeExpr [] ifaces)
458 AddUserType (name, t, ifaces);
459 builder_to_declspace.Add (t, i);
462 public static void AddMethod (MethodBuilder builder, MethodData method)
464 builder_to_method.Add (builder, method);
467 public static void RegisterAttrType (Type t, TypeContainer tc)
469 builder_to_attr.Add (t, tc);
472 public static void AddTypeParameter (Type t, TypeParameter tparam)
474 builder_to_type_param.Add (t, tparam);
478 /// Returns the DeclSpace whose Type is `t' or null if there is no
479 /// DeclSpace for `t' (ie, the Type comes from a library)
481 public static DeclSpace LookupDeclSpace (Type t)
483 return builder_to_declspace [t] as DeclSpace;
487 /// Returns the TypeContainer whose Type is `t' or null if there is no
488 /// TypeContainer for `t' (ie, the Type comes from a library)
490 public static TypeContainer LookupTypeContainer (Type t)
492 return builder_to_declspace [t] as TypeContainer;
495 public static IMemberContainer LookupMemberContainer (Type t)
497 if (t is TypeBuilder) {
498 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
499 if (container != null)
503 return TypeHandle.GetTypeHandle (t);
506 public static Interface LookupInterface (Type t)
508 return builder_to_declspace [t] as Interface;
511 public static Delegate LookupDelegate (Type t)
513 return builder_to_declspace [t] as Delegate;
516 public static Enum LookupEnum (Type t)
518 return builder_to_declspace [t] as Enum;
521 public static TypeContainer LookupAttr (Type t)
523 return (TypeContainer) builder_to_attr [t];
526 public static TypeParameter LookupTypeParameter (Type t)
528 return (TypeParameter) builder_to_type_param [t];
531 public static bool HasConstructorConstraint (Type t)
533 if (!t.IsGenericParameter)
534 throw new InvalidOperationException ();
536 TypeParameter tparam = LookupTypeParameter (t);
538 return tparam.HasConstructorConstraint;
540 object[] attrs = t.GetCustomAttributes (
541 TypeManager.new_constraint_attr_type, false);
543 return attrs.Length > 0;
548 /// Registers an assembly to load types from.
550 public static void AddAssembly (Assembly a)
552 foreach (Assembly assembly in assemblies) {
557 int top = assemblies.Length;
558 Assembly [] n = new Assembly [top + 1];
560 assemblies.CopyTo (n, 0);
567 /// Registers a module builder to lookup types from
569 public static void AddModule (Module mb)
571 int top = modules != null ? modules.Length : 0;
572 Module [] n = new Module [top + 1];
575 modules.CopyTo (n, 0);
580 static Hashtable references = new Hashtable ();
583 // Gets the reference to T version of the Type (T&)
585 public static Type GetReferenceType (Type t)
587 return t.MakeByRefType ();
590 static Hashtable pointers = new Hashtable ();
593 // Gets the pointer to T version of the Type (T*)
595 public static Type GetPointerType (Type t)
597 string tname = t.FullName + "*";
599 Type ret = t.Assembly.GetType (tname);
602 // If the type comes from the assembly we are building
603 // We need the Hashtable, because .NET 1.1 will return different instance types
604 // every time we call ModuleBuilder.GetType.
607 if (pointers [t] == null)
608 pointers [t] = CodeGen.Module.Builder.GetType (tname);
610 ret = (Type) pointers [t];
617 // Low-level lookup, cache-less
619 static Type LookupTypeReflection (string name)
623 foreach (Assembly a in assemblies){
624 t = a.GetType (name);
629 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
630 if (ta == TypeAttributes.NotPublic ||
631 ta == TypeAttributes.NestedPrivate ||
632 ta == TypeAttributes.NestedAssembly ||
633 ta == TypeAttributes.NestedFamANDAssem){
636 // In .NET pointers turn out to be private, even if their
637 // element type is not
640 t = t.GetElementType ();
650 foreach (Module mb in modules) {
651 t = mb.GetType (name);
659 static Hashtable negative_hits = new Hashtable ();
662 // This function is used when you want to avoid the lookups, and want to go
663 // directly to the source. This will use the cache.
665 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
666 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
667 // way to test things other than doing a fullname compare
669 public static Type LookupTypeDirect (string name)
671 Type t = (Type) types [name];
675 t = LookupTypeReflection (name);
683 static readonly char [] dot_array = { '.' };
686 /// Returns the Type associated with @name, takes care of the fact that
687 /// reflection expects nested types to be separated from the main type
688 /// with a "+" instead of a "."
690 public static Type LookupType (string name)
695 // First lookup in user defined and cached values
698 t = (Type) types [name];
702 // Two thirds of the failures are caught here.
703 if (negative_hits.Contains (name))
706 // Sadly, split takes a param array, so this ends up allocating *EVERY TIME*
707 string [] elements = name.Split (dot_array);
708 int count = elements.Length;
710 for (int n = 1; n <= count; n++){
711 string top_level_type = String.Join (".", elements, 0, n);
713 // One third of the failures are caught here.
714 if (negative_hits.Contains (top_level_type))
717 t = (Type) types [top_level_type];
719 t = LookupTypeReflection (top_level_type);
721 negative_hits [top_level_type] = null;
732 // We know that System.Object does not have children, and since its the parent of
733 // all the objects, it always gets probbed for inner classes.
735 if (top_level_type == "System.Object")
738 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
739 //Console.WriteLine ("Looking up: " + newt + " " + name);
740 t = LookupTypeReflection (newt);
742 negative_hits [name] = null;
747 negative_hits [name] = null;
752 /// Computes the namespaces that we import from the assemblies we reference.
754 public static void ComputeNamespaces ()
756 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces", BindingFlags.Instance|BindingFlags.NonPublic);
759 // First add the assembly namespaces
761 if (assembly_get_namespaces != null){
762 int count = assemblies.Length;
764 for (int i = 0; i < count; i++){
765 Assembly a = assemblies [i];
766 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
767 foreach (string ns in namespaces){
770 Namespace.LookupNamespace (ns, true);
774 foreach (Assembly a in assemblies){
775 foreach (Type t in a.GetTypes ()){
776 string ns = t.Namespace;
778 // t.Namespace returns null for <PrivateImplDetails>
779 if (ns == ""|| ns == null)
781 Namespace.LookupNamespace (ns, true);
787 public static bool NamespaceClash (string name, Location loc)
789 if (Namespace.LookupNamespace (name, false) == null)
792 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
797 /// Returns the C# name of a type if possible, or the full type name otherwise
799 static public string CSharpName (Type t)
801 return Regex.Replace (t.FullName,
803 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
804 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
805 @"Boolean|String|Void)" +
807 new MatchEvaluator (CSharpNameMatch));
810 static String CSharpNameMatch (Match match)
812 string s = match.Groups [1].Captures [0].Value;
814 Replace ("int32", "int").
815 Replace ("uint32", "uint").
816 Replace ("int16", "short").
817 Replace ("uint16", "ushort").
818 Replace ("int64", "long").
819 Replace ("uint64", "ulong").
820 Replace ("single", "float").
821 Replace ("boolean", "bool")
822 + match.Groups [2].Captures [0].Value;
826 /// Returns the signature of the method with full namespace classification
828 static public string GetFullNameSignature (MemberInfo mi)
832 n = mi.DeclaringType.Name;
834 return mi.DeclaringType.FullName.Replace ('+', '.') + '.' + n;
837 static public string GetFullName (Type t)
839 string name = t.FullName.Replace ('+', '.');
841 DeclSpace tc = LookupDeclSpace (t);
842 if ((tc != null) && tc.IsGeneric) {
843 TypeParameter[] tparam = tc.TypeParameters;
845 StringBuilder sb = new StringBuilder (name);
847 for (int i = 0; i < tparam.Length; i++) {
850 sb.Append (tparam [i].Name);
853 return sb.ToString ();
854 } else if (t.HasGenericArguments && !t.IsGenericInstance) {
855 Type[] tparam = t.GetGenericArguments ();
857 StringBuilder sb = new StringBuilder (name);
859 for (int i = 0; i < tparam.Length; i++) {
862 sb.Append (tparam [i].Name);
865 return sb.ToString ();
872 /// Returns the signature of the property and indexer
874 static public string CSharpSignature (PropertyBuilder pb, bool is_indexer)
877 return GetFullNameSignature (pb);
880 MethodBase mb = pb.GetSetMethod (true) != null ? pb.GetSetMethod (true) : pb.GetGetMethod (true);
881 string signature = GetFullNameSignature (mb);
882 string arg = TypeManager.LookupParametersByBuilder (mb).ParameterDesc (0);
883 return String.Format ("{0}.this[{1}]", signature.Substring (0, signature.LastIndexOf ('.')), arg);
887 /// Returns the signature of the method
889 static public string CSharpSignature (MethodBase mb)
894 // FIXME: We should really have a single function to do
895 // everything instead of the following 5 line pattern
897 ParameterData iparams = LookupParametersByBuilder (mb);
900 iparams = new ReflectionParameters (mb);
902 for (int i = 0; i < iparams.Count; i++) {
906 sig += iparams.ParameterDesc(i);
910 return GetFullNameSignature (mb) + sig;
914 /// Looks up a type, and aborts if it is not found. This is used
915 /// by types required by the compiler
917 static Type CoreLookupType (string name)
919 Type t = LookupTypeDirect (name);
922 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
923 Environment.Exit (0);
930 /// Returns the MethodInfo for a method named `name' defined
931 /// in type `t' which takes arguments of types `args'
933 static MethodInfo GetMethod (Type t, string name, Type [] args, bool is_private, bool report_errors)
937 BindingFlags flags = instance_and_static | BindingFlags.Public;
943 flags |= BindingFlags.NonPublic;
945 list = FindMembers (t, MemberTypes.Method, flags, signature_filter, sig);
946 if (list.Count == 0) {
948 Report.Error (-19, "Can not find the core function `" + name + "'");
952 MethodInfo mi = list [0] as MethodInfo;
955 Report.Error (-19, "Can not find the core function `" + name + "'");
962 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
964 return GetMethod (t, name, args, false, report_errors);
967 static MethodInfo GetMethod (Type t, string name, Type [] args)
969 return GetMethod (t, name, args, true);
974 /// Returns the ConstructorInfo for "args"
976 static ConstructorInfo GetConstructor (Type t, Type [] args)
984 list = FindMembers (t, MemberTypes.Constructor,
985 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
986 signature_filter, sig);
987 if (list.Count == 0){
988 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
992 ConstructorInfo ci = list [0] as ConstructorInfo;
994 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
1001 public static void InitEnumUnderlyingTypes ()
1004 int32_type = CoreLookupType ("System.Int32");
1005 int64_type = CoreLookupType ("System.Int64");
1006 uint32_type = CoreLookupType ("System.UInt32");
1007 uint64_type = CoreLookupType ("System.UInt64");
1008 byte_type = CoreLookupType ("System.Byte");
1009 sbyte_type = CoreLookupType ("System.SByte");
1010 short_type = CoreLookupType ("System.Int16");
1011 ushort_type = CoreLookupType ("System.UInt16");
1015 /// The types have to be initialized after the initial
1016 /// population of the type has happened (for example, to
1017 /// bootstrap the corlib.dll
1019 public static void InitCoreTypes ()
1021 object_type = CoreLookupType ("System.Object");
1022 value_type = CoreLookupType ("System.ValueType");
1024 InitEnumUnderlyingTypes ();
1026 char_type = CoreLookupType ("System.Char");
1027 string_type = CoreLookupType ("System.String");
1028 float_type = CoreLookupType ("System.Single");
1029 double_type = CoreLookupType ("System.Double");
1030 char_ptr_type = CoreLookupType ("System.Char*");
1031 decimal_type = CoreLookupType ("System.Decimal");
1032 bool_type = CoreLookupType ("System.Boolean");
1033 enum_type = CoreLookupType ("System.Enum");
1035 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
1036 delegate_type = CoreLookupType ("System.Delegate");
1038 array_type = CoreLookupType ("System.Array");
1039 void_type = CoreLookupType ("System.Void");
1040 type_type = CoreLookupType ("System.Type");
1042 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
1043 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
1044 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
1045 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
1046 asynccallback_type = CoreLookupType ("System.AsyncCallback");
1047 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
1048 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
1049 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
1050 idisposable_type = CoreLookupType ("System.IDisposable");
1051 icloneable_type = CoreLookupType ("System.ICloneable");
1052 monitor_type = CoreLookupType ("System.Threading.Monitor");
1053 intptr_type = CoreLookupType ("System.IntPtr");
1055 attribute_type = CoreLookupType ("System.Attribute");
1056 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
1057 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
1058 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
1059 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
1060 new_constraint_attr_type = CoreLookupType ("System.Runtime.CompilerServices.NewConstraintAttribute");
1061 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
1062 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
1065 // Sigh. Remove this before the release. Wonder what versions of Mono
1066 // people are running.
1068 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
1070 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
1072 void_ptr_type = CoreLookupType ("System.Void*");
1074 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
1076 exception_type = CoreLookupType ("System.Exception");
1077 activator_type = CoreLookupType ("System.Activator");
1078 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
1083 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
1084 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
1087 // When compiling corlib, store the "real" types here.
1089 if (!RootContext.StdLib) {
1090 system_int32_type = typeof (System.Int32);
1091 system_array_type = typeof (System.Array);
1092 system_type_type = typeof (System.Type);
1093 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
1095 Type [] void_arg = { };
1096 system_int_array_get_length = GetMethod (
1097 system_array_type, "get_Length", void_arg);
1098 system_int_array_get_rank = GetMethod (
1099 system_array_type, "get_Rank", void_arg);
1100 system_object_array_clone = GetMethod (
1101 system_array_type, "Clone", void_arg);
1103 Type [] system_int_arg = { system_int32_type };
1104 system_int_array_get_length_int = GetMethod (
1105 system_array_type, "GetLength", system_int_arg);
1106 system_int_array_get_upper_bound_int = GetMethod (
1107 system_array_type, "GetUpperBound", system_int_arg);
1108 system_int_array_get_lower_bound_int = GetMethod (
1109 system_array_type, "GetLowerBound", system_int_arg);
1111 Type [] system_array_int_arg = { system_array_type, system_int32_type };
1112 system_void_array_copyto_array_int = GetMethod (
1113 system_array_type, "CopyTo", system_array_int_arg);
1115 Type [] system_3_type_arg = {
1116 system_type_type, system_type_type, system_type_type };
1117 Type [] system_4_type_arg = {
1118 system_type_type, system_type_type, system_type_type, system_type_type };
1120 MethodInfo set_corlib_type_builders = GetMethod (
1121 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1122 system_4_type_arg, true, false);
1124 if (set_corlib_type_builders != null) {
1125 object[] args = new object [4];
1126 args [0] = object_type;
1127 args [1] = value_type;
1128 args [2] = enum_type;
1129 args [3] = void_type;
1131 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1133 // Compatibility for an older version of the class libs.
1134 set_corlib_type_builders = GetMethod (
1135 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1136 system_3_type_arg, true, true);
1138 if (set_corlib_type_builders == null) {
1139 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1143 object[] args = new object [3];
1144 args [0] = object_type;
1145 args [1] = value_type;
1146 args [2] = enum_type;
1148 set_corlib_type_builders.Invoke (CodeGen.Assembly.Builder, args);
1152 system_object_expr.Type = object_type;
1153 system_string_expr.Type = string_type;
1154 system_boolean_expr.Type = bool_type;
1155 system_decimal_expr.Type = decimal_type;
1156 system_single_expr.Type = float_type;
1157 system_double_expr.Type = double_type;
1158 system_sbyte_expr.Type = sbyte_type;
1159 system_byte_expr.Type = byte_type;
1160 system_int16_expr.Type = short_type;
1161 system_uint16_expr.Type = ushort_type;
1162 system_int32_expr.Type = int32_type;
1163 system_uint32_expr.Type = uint32_type;
1164 system_int64_expr.Type = int64_type;
1165 system_uint64_expr.Type = uint64_type;
1166 system_char_expr.Type = char_type;
1167 system_void_expr.Type = void_type;
1168 system_asynccallback_expr.Type = asynccallback_type;
1169 system_iasyncresult_expr.Type = iasyncresult_type;
1170 system_valuetype_expr.Type = value_type;
1174 // The helper methods that are used by the compiler
1176 public static void InitCodeHelpers ()
1179 // Now load the default methods that we use.
1181 Type [] string_string = { string_type, string_type };
1182 string_concat_string_string = GetMethod (
1183 string_type, "Concat", string_string);
1184 Type [] string_string_string = { string_type, string_type, string_type };
1185 string_concat_string_string_string = GetMethod (
1186 string_type, "Concat", string_string_string);
1187 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1188 string_concat_string_string_string_string = GetMethod (
1189 string_type, "Concat", string_string_string_string);
1191 Type [] object_object = { object_type, object_type };
1192 string_concat_object_object = GetMethod (
1193 string_type, "Concat", object_object);
1195 Type [] string_ = { string_type };
1196 string_isinterneted_string = GetMethod (
1197 string_type, "IsInterned", string_);
1199 Type [] runtime_type_handle = { runtime_handle_type };
1200 system_type_get_type_from_handle = GetMethod (
1201 type_type, "GetTypeFromHandle", runtime_type_handle);
1203 Type [] delegate_delegate = { delegate_type, delegate_type };
1204 delegate_combine_delegate_delegate = GetMethod (
1205 delegate_type, "Combine", delegate_delegate);
1207 delegate_remove_delegate_delegate = GetMethod (
1208 delegate_type, "Remove", delegate_delegate);
1213 Type [] void_arg = { };
1214 object_getcurrent_void = GetMethod (
1215 ienumerator_type, "get_Current", void_arg);
1216 bool_movenext_void = GetMethod (
1217 ienumerator_type, "MoveNext", void_arg);
1218 void_reset_void = GetMethod (
1219 ienumerator_type, "Reset", void_arg);
1220 void_dispose_void = GetMethod (
1221 idisposable_type, "Dispose", void_arg);
1222 int_get_offset_to_string_data = GetMethod (
1223 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1224 int_array_get_length = GetMethod (
1225 array_type, "get_Length", void_arg);
1226 int_array_get_rank = GetMethod (
1227 array_type, "get_Rank", void_arg);
1228 ienumerable_getenumerator_void = GetMethod (
1229 ienumerable_type, "GetEnumerator", void_arg);
1234 Type [] int_arg = { int32_type };
1235 int_array_get_length_int = GetMethod (
1236 array_type, "GetLength", int_arg);
1237 int_array_get_upper_bound_int = GetMethod (
1238 array_type, "GetUpperBound", int_arg);
1239 int_array_get_lower_bound_int = GetMethod (
1240 array_type, "GetLowerBound", int_arg);
1243 // System.Array methods
1245 object_array_clone = GetMethod (
1246 array_type, "Clone", void_arg);
1247 Type [] array_int_arg = { array_type, int32_type };
1248 void_array_copyto_array_int = GetMethod (
1249 array_type, "CopyTo", array_int_arg);
1254 Type [] object_arg = { object_type };
1255 void_monitor_enter_object = GetMethod (
1256 monitor_type, "Enter", object_arg);
1257 void_monitor_exit_object = GetMethod (
1258 monitor_type, "Exit", object_arg);
1260 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1262 void_initializearray_array_fieldhandle = GetMethod (
1263 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1268 int_getlength_int = GetMethod (
1269 array_type, "GetLength", int_arg);
1272 // Decimal constructors
1274 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1275 void_decimal_ctor_five_args = GetConstructor (
1276 decimal_type, dec_arg);
1281 cons_param_array_attribute = GetConstructor (
1282 param_array_type, void_arg);
1284 unverifiable_code_ctor = GetConstructor (
1285 unverifiable_code_type, void_arg);
1288 // InvalidOperationException
1290 invalid_operation_ctor = GetConstructor (
1291 invalid_operation_exception_type, void_arg);
1295 object_ctor = GetConstructor (object_type, void_arg);
1298 Type [] type_arg = { type_type };
1299 activator_create_instance = GetMethod (
1300 activator_type, "CreateInstance", type_arg);
1303 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1306 /// This is the "old", non-cache based FindMembers() function. We cannot use
1307 /// the cache here because there is no member name argument.
1309 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1310 MemberFilter filter, object criteria)
1312 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1315 // `builder_to_declspace' contains all dynamic types.
1319 Timer.StartTimer (TimerType.FindMembers);
1320 list = decl.FindMembers (mt, bf, filter, criteria);
1321 Timer.StopTimer (TimerType.FindMembers);
1326 // We have to take care of arrays specially, because GetType on
1327 // a TypeBuilder array will return a Type, not a TypeBuilder,
1328 // and we can not call FindMembers on this type.
1330 if (t.IsSubclassOf (TypeManager.array_type))
1331 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1334 // Since FindMembers will not lookup both static and instance
1335 // members, we emulate this behaviour here.
1337 if ((bf & instance_and_static) == instance_and_static){
1338 MemberInfo [] i_members = t.FindMembers (
1339 mt, bf & ~BindingFlags.Static, filter, criteria);
1341 int i_len = i_members.Length;
1343 MemberInfo one = i_members [0];
1346 // If any of these are present, we are done!
1348 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1349 return new MemberList (i_members);
1352 MemberInfo [] s_members = t.FindMembers (
1353 mt, bf & ~BindingFlags.Instance, filter, criteria);
1355 int s_len = s_members.Length;
1356 if (i_len > 0 || s_len > 0)
1357 return new MemberList (i_members, s_members);
1360 return new MemberList (i_members);
1362 return new MemberList (s_members);
1366 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1371 /// This method is only called from within MemberLookup. It tries to use the member
1372 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1373 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1374 /// our return value will already contain all inherited members and the caller don't need
1375 /// to check base classes and interfaces anymore.
1377 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1378 string name, int num_type_arguments,
1379 out bool used_cache)
1382 // We have to take care of arrays specially, because GetType on
1383 // a TypeBuilder array will return a Type, not a TypeBuilder,
1384 // and we can not call FindMembers on this type.
1386 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1388 return TypeHandle.ArrayType.MemberCache.FindMembers (
1389 mt, bf, name, FilterWithClosure_delegate, null);
1393 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1394 // and we can ask the DeclSpace for the MemberCache.
1396 if (t is TypeBuilder) {
1397 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1398 MemberCache cache = decl.MemberCache;
1401 // If this DeclSpace has a MemberCache, use it.
1404 if (cache != null) {
1406 return cache.FindMembers (
1407 mt, bf, name, FilterWithClosure_delegate, null);
1410 // If there is no MemberCache, we need to use the "normal" FindMembers.
1413 Timer.StartTimer (TimerType.FindMembers);
1414 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1415 FilterWithClosure_delegate, name);
1416 Timer.StopTimer (TimerType.FindMembers);
1422 // This call will always succeed. There is exactly one TypeHandle instance per
1423 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1424 // if it didn't already exist.
1426 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1429 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1432 public static bool IsBuiltinType (Type t)
1434 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1435 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1436 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1437 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1444 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1445 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1447 public static bool IsCLRType (Type t)
1449 if (t == object_type || t == int32_type || t == uint32_type ||
1450 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1451 t == char_type || t == short_type || t == bool_type ||
1452 t == sbyte_type || t == byte_type || t == ushort_type)
1458 public static bool IsDelegateType (Type t)
1460 if (t.IsGenericInstance)
1461 t = t.GetGenericTypeDefinition ();
1463 if (t.IsSubclassOf (TypeManager.delegate_type))
1469 public static bool IsEnumType (Type t)
1471 if (t == TypeManager.enum_type || t.IsSubclassOf (TypeManager.enum_type))
1476 public static bool IsBuiltinOrEnum (Type t)
1478 if (IsBuiltinType (t))
1488 // Only a quick hack to get things moving, while real runtime support appears
1490 public static bool IsGeneric (Type t)
1492 DeclSpace ds = (DeclSpace) builder_to_declspace [t];
1494 return ds.IsGeneric;
1497 public static int GetNumberOfTypeArguments (Type t)
1499 DeclSpace tc = LookupDeclSpace (t);
1501 return tc.IsGeneric ? tc.CountTypeParameters : 0;
1503 return t.HasGenericArguments ? t.GetGenericArguments ().Length : 0;
1506 public static Type[] GetTypeArguments (Type t)
1508 DeclSpace tc = LookupDeclSpace (t);
1511 throw new InvalidOperationException ();
1513 TypeParameter[] tparam = tc.TypeParameters;
1514 Type[] ret = new Type [tparam.Length];
1515 for (int i = 0; i < tparam.Length; i++) {
1516 ret [i] = tparam [i].Type;
1517 if (ret [i] == null)
1518 throw new InternalErrorException ();
1523 return t.GetGenericArguments ();
1526 public static bool CheckGeneric (Type t, int num_type_arguments)
1528 if (num_type_arguments < 0)
1531 DeclSpace tc = LookupDeclSpace (t);
1535 return num_type_arguments == 0;
1537 if (num_type_arguments == 0)
1540 if (num_type_arguments != tc.CountTypeParameters)
1543 if (!t.HasGenericArguments)
1544 return num_type_arguments == 0;
1546 if (num_type_arguments == 0)
1549 if (num_type_arguments != t.GetGenericArguments ().Length)
1557 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1559 public static bool IsUnmanagedType (Type t)
1561 if (IsBuiltinType (t) && t != TypeManager.string_type)
1570 if (IsValueType (t)){
1571 if (t is TypeBuilder){
1572 TypeContainer tc = LookupTypeContainer (t);
1574 foreach (Field f in tc.Fields){
1575 if (f.FieldBuilder.IsStatic)
1577 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1581 FieldInfo [] fields = t.GetFields ();
1583 foreach (FieldInfo f in fields){
1586 if (!IsUnmanagedType (f.FieldType))
1596 public static bool IsValueType (Type t)
1598 return t.IsGenericParameter || t.IsValueType;
1601 public static bool IsInterfaceType (Type t)
1603 Interface iface = builder_to_declspace [t] as Interface;
1611 public static bool IsEqualGenericType (Type a, Type b)
1613 if ((a is TypeBuilder) && a.IsGenericTypeDefinition && b.IsGenericInstance) {
1615 // `a' is a generic type definition's TypeBuilder and `b' is a
1616 // generic instance of the same type.
1622 // void Test (Stack<T> stack) { }
1625 // The first argument of `Test' will be the generic instance
1626 // "Stack<!0>" - which is the same type than the "Stack" TypeBuilder.
1628 if (a != b.GetGenericTypeDefinition ())
1631 Type[] aparams = a.GetGenericArguments ();
1632 Type[] bparams = b.GetGenericArguments ();
1634 if (aparams.Length != bparams.Length)
1637 for (int i = 0; i < aparams.Length; i++)
1638 if (!aparams [i].Equals (bparams [i]))
1647 public static bool IsEqual (Type a, Type b)
1652 return IsEqualGenericType (a, b);
1655 public static bool MayBecomeEqualGenericTypes (Type a, Type b)
1657 if (a.IsGenericParameter) {
1659 // If a is an array of a's type, they may never
1663 b = b.GetElementType ();
1669 // If b is a generic parameter or an actual type,
1670 // they may become equal:
1672 // class X<T,U> : I<T>, I<U>
1673 // class X<T> : I<T>, I<float>
1675 if (b.IsGenericParameter || !b.IsGenericInstance)
1679 // We're now comparing a type parameter with a
1680 // generic instance. They may become equal unless
1681 // the type parameter appears anywhere in the
1682 // generic instance:
1684 // class X<T,U> : I<T>, I<X<U>>
1685 // -> error because you could instanciate it as
1688 // class X<T> : I<T>, I<X<T>> -> ok
1691 Type[] bargs = GetTypeArguments (b);
1692 for (int i = 0; i < bargs.Length; i++) {
1693 if (a.Equals (bargs [i]))
1700 if (b.IsGenericParameter)
1701 return MayBecomeEqualGenericTypes (b, a);
1704 // At this point, neither a nor b are a type parameter.
1706 // If one of them is a generic instance, let
1707 // MayBecomeEqualGenericInstances() compare them (if the
1708 // other one is not a generic instance, they can never
1712 if (a.IsGenericInstance || b.IsGenericInstance)
1713 return MayBecomeEqualGenericInstances (a, b);
1716 // If both of them are arrays.
1719 if (a.IsArray && b.IsArray) {
1720 if (a.GetArrayRank () != b.GetArrayRank ())
1723 a = a.GetElementType ();
1724 b = b.GetElementType ();
1726 return MayBecomeEqualGenericTypes (a, b);
1730 // Ok, two ordinary types.
1733 return a.Equals (b);
1737 // Checks whether two generic instances may become equal for some
1738 // particular instantiation (26.3.1).
1740 public static bool MayBecomeEqualGenericInstances (Type a, Type b)
1742 if (!a.IsGenericInstance || !b.IsGenericInstance)
1744 if (a.GetGenericTypeDefinition () != b.GetGenericTypeDefinition ())
1747 Type[] aargs = GetTypeArguments (a);
1748 Type[] bargs = GetTypeArguments (b);
1750 if (aargs.Length != bargs.Length)
1753 for (int i = 0; i < aargs.Length; i++) {
1754 if (MayBecomeEqualGenericTypes (aargs [i], bargs [i]))
1761 public static bool IsSubclassOf (Type type, Type parent)
1763 if (type.IsGenericInstance && !parent.IsGenericInstance)
1764 type = type.GetGenericTypeDefinition ();
1766 return type.IsSubclassOf (parent);
1770 // Checks whether `type' is a subclass or nested child of `parent'.
1772 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1775 if ((type == parent) || type.IsSubclassOf (parent) ||
1776 IsEqualGenericType (type, parent))
1779 // Handle nested types.
1780 type = type.DeclaringType;
1781 } while (type != null);
1787 // Checks whether `type' is a nested child of `parent'.
1789 public static bool IsNestedChildOf (Type type, Type parent)
1794 type = type.DeclaringType;
1795 while (type != null) {
1799 type = type.DeclaringType;
1806 // Do the right thing when returning the element type of an
1807 // array type based on whether we are compiling corlib or not
1809 public static Type GetElementType (Type t)
1811 if (RootContext.StdLib)
1812 return t.GetElementType ();
1814 return TypeToCoreType (t.GetElementType ());
1818 /// Returns the User Defined Types
1820 public static ArrayList UserTypes {
1826 public static Hashtable TypeContainers {
1828 return typecontainers;
1832 static Hashtable attr_to_allowmult;
1834 public static void RegisterAttributeAllowMultiple (Type attr_type, bool allow)
1836 if (attr_to_allowmult == null)
1837 attr_to_allowmult = new PtrHashtable ();
1839 if (attr_to_allowmult.Contains (attr_type))
1842 attr_to_allowmult.Add (attr_type, allow);
1846 public static bool AreMultipleAllowed (Type attr_type)
1848 if (!(attr_type is TypeBuilder)) {
1849 System.Attribute [] attrs = System.Attribute.GetCustomAttributes (attr_type);
1851 foreach (System.Attribute tmp in attrs)
1852 if (tmp is AttributeUsageAttribute) {
1853 return ((AttributeUsageAttribute) tmp).AllowMultiple;
1859 if (attr_to_allowmult == null)
1862 return (bool) attr_to_allowmult [attr_type];
1865 static Hashtable builder_to_constant;
1867 public static void RegisterConstant (FieldBuilder fb, Const c)
1869 if (builder_to_constant == null)
1870 builder_to_constant = new PtrHashtable ();
1872 if (builder_to_constant.Contains (fb))
1875 builder_to_constant.Add (fb, c);
1878 public static Const LookupConstant (FieldBuilder fb)
1880 if (builder_to_constant == null)
1883 return (Const) builder_to_constant [fb];
1887 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1891 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1892 /// for anything which is dynamic, and we need this in a number of places,
1893 /// we register this information here, and use it afterwards.
1895 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1900 method_arguments.Add (mb, args);
1901 method_internal_params.Add (mb, ip);
1906 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1908 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1911 if (method_internal_params.Contains (mb))
1912 return (InternalParameters) method_internal_params [mb];
1914 throw new Exception ("Argument for Method not registered" + mb);
1918 /// Returns the argument types for a method based on its methodbase
1920 /// For dynamic methods, we use the compiler provided types, for
1921 /// methods from existing assemblies we load them from GetParameters,
1922 /// and insert them into the cache
1924 static public Type [] GetArgumentTypes (MethodBase mb)
1926 if (method_arguments.Contains (mb))
1927 return (Type []) method_arguments [mb];
1929 ParameterInfo [] pi = mb.GetParameters ();
1931 Type [] types = new Type [c];
1933 for (int i = 0; i < c; i++)
1934 types [i] = pi [i].ParameterType;
1936 method_arguments.Add (mb, types);
1942 /// Returns the argument types for an indexer based on its PropertyInfo
1944 /// For dynamic indexers, we use the compiler provided types, for
1945 /// indexers from existing assemblies we load them from GetParameters,
1946 /// and insert them into the cache
1948 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1950 if (indexer_arguments.Contains (indexer))
1951 return (Type []) indexer_arguments [indexer];
1952 else if (indexer is PropertyBuilder)
1953 // If we're a PropertyBuilder and not in the
1954 // `indexer_arguments' hash, then we're a property and
1958 ParameterInfo [] pi = indexer.GetIndexParameters ();
1959 // Property, not an indexer.
1963 Type [] types = new Type [c];
1965 for (int i = 0; i < c; i++)
1966 types [i] = pi [i].ParameterType;
1968 indexer_arguments.Add (indexer, types);
1974 // This is a workaround the fact that GetValue is not
1975 // supported for dynamic types
1977 static Hashtable fields = new Hashtable ();
1978 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1980 if (fields.Contains (fb))
1983 fields.Add (fb, value);
1988 static public object GetValue (FieldBuilder fb)
1993 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1994 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1996 if (fieldbuilders_to_fields.Contains (fb))
1999 fieldbuilders_to_fields.Add (fb, f);
2004 // The return value can be null; This will be the case for
2005 // auxiliary FieldBuilders created by the compiler that have no
2006 // real field being declared on the source code
2008 static public FieldBase GetField (FieldInfo fb)
2010 return (FieldBase) fieldbuilders_to_fields [fb];
2013 static Hashtable events;
2015 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
2018 events = new Hashtable ();
2020 if (events.Contains (eb))
2023 events.Add (eb, new Pair (add, remove));
2028 static public MethodInfo GetAddMethod (EventInfo ei)
2030 if (ei is MyEventBuilder) {
2031 Pair pair = (Pair) events [ei];
2033 return (MethodInfo) pair.First;
2035 return ei.GetAddMethod ();
2038 static public MethodInfo GetRemoveMethod (EventInfo ei)
2040 if (ei is MyEventBuilder) {
2041 Pair pair = (Pair) events [ei];
2043 return (MethodInfo) pair.Second;
2045 return ei.GetRemoveMethod ();
2048 static Hashtable priv_fields_events;
2050 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
2052 if (priv_fields_events == null)
2053 priv_fields_events = new Hashtable ();
2055 if (priv_fields_events.Contains (einfo))
2058 priv_fields_events.Add (einfo, builder);
2063 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
2065 if (priv_fields_events == null)
2068 return (MemberInfo) priv_fields_events [ei];
2071 static Hashtable properties;
2073 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
2075 if (properties == null)
2076 properties = new Hashtable ();
2078 if (properties.Contains (pb))
2081 properties.Add (pb, new Pair (get, set));
2086 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
2087 MethodBase set, Type[] args)
2089 if (!RegisterProperty (pb, get,set))
2092 indexer_arguments.Add (pb, args);
2098 /// Given an array of interface types, expand and eliminate repeated ocurrences
2099 /// of an interface.
2103 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
2106 public static TypeExpr[] ExpandInterfaces (TypeExpr [] base_interfaces)
2108 ArrayList new_ifaces = new ArrayList ();
2110 foreach (TypeExpr iface in base_interfaces){
2111 if (!new_ifaces.Contains (iface))
2112 new_ifaces.Add (iface);
2114 TypeExpr [] implementing = iface.GetInterfaces ();
2116 foreach (TypeExpr imp in implementing){
2117 if (!new_ifaces.Contains (imp))
2118 new_ifaces.Add (imp);
2121 TypeExpr [] ret = new TypeExpr [new_ifaces.Count];
2122 new_ifaces.CopyTo (ret, 0);
2126 static PtrHashtable iface_cache = new PtrHashtable ();
2129 /// This function returns the interfaces in the type `t'. Works with
2130 /// both types and TypeBuilders.
2132 public static TypeExpr [] GetInterfaces (Type t)
2135 TypeExpr [] cached = iface_cache [t] as TypeExpr [];
2140 // The reason for catching the Array case is that Reflection.Emit
2141 // will not return a TypeBuilder for Array types of TypeBuilder types,
2142 // but will still throw an exception if we try to call GetInterfaces
2145 // Since the array interfaces are always constant, we return those for
2150 t = TypeManager.array_type;
2152 if (t is TypeBuilder){
2153 TypeExpr [] parent_ifaces;
2155 if (t.BaseType == null)
2156 parent_ifaces = NoTypeExprs;
2158 parent_ifaces = GetInterfaces (t.BaseType);
2159 TypeExpr [] type_ifaces = (TypeExpr []) builder_to_ifaces [t];
2160 if (type_ifaces == null)
2161 type_ifaces = NoTypeExprs;
2163 int parent_count = parent_ifaces.Length;
2164 TypeExpr [] result = new TypeExpr [parent_count + type_ifaces.Length];
2165 parent_ifaces.CopyTo (result, 0);
2166 type_ifaces.CopyTo (result, parent_count);
2168 iface_cache [t] = result;
2171 Type [] ifaces = t.GetInterfaces ();
2172 if (ifaces.Length == 0)
2175 TypeExpr [] result = new TypeExpr [ifaces.Length];
2176 for (int i = 0; i < ifaces.Length; i++)
2177 result [i] = new TypeExpression (ifaces [i], Location.Null);
2179 iface_cache [t] = result;
2185 // gets the interfaces that are declared explicitly on t
2187 public static TypeExpr [] GetExplicitInterfaces (TypeBuilder t)
2189 return (TypeExpr []) builder_to_ifaces [t];
2193 /// The following is used to check if a given type implements an interface.
2194 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
2196 public static bool ImplementsInterface (Type t, Type iface)
2198 TypeExpr [] interfaces;
2201 // FIXME OPTIMIZATION:
2202 // as soon as we hit a non-TypeBuiler in the interface
2203 // chain, we could return, as the `Type.GetInterfaces'
2204 // will return all the interfaces implement by the type
2208 interfaces = GetInterfaces (t);
2210 if (interfaces != null){
2211 foreach (TypeExpr i in interfaces){
2212 if (i.Type == iface)
2218 } while (t != null);
2223 static NumberFormatInfo nf_provider = CultureInfo.CurrentCulture.NumberFormat;
2225 // This is a custom version of Convert.ChangeType() which works
2226 // with the TypeBuilder defined types when compiling corlib.
2227 public static object ChangeType (object value, Type conversionType, out bool error)
2229 IConvertible convert_value = value as IConvertible;
2231 if (convert_value == null){
2237 // We must use Type.Equals() here since `conversionType' is
2238 // the TypeBuilder created version of a system type and not
2239 // the system type itself. You cannot use Type.GetTypeCode()
2240 // on such a type - it'd always return TypeCode.Object.
2244 if (conversionType.Equals (typeof (Boolean)))
2245 return (object)(convert_value.ToBoolean (nf_provider));
2246 else if (conversionType.Equals (typeof (Byte)))
2247 return (object)(convert_value.ToByte (nf_provider));
2248 else if (conversionType.Equals (typeof (Char)))
2249 return (object)(convert_value.ToChar (nf_provider));
2250 else if (conversionType.Equals (typeof (DateTime)))
2251 return (object)(convert_value.ToDateTime (nf_provider));
2252 else if (conversionType.Equals (typeof (Decimal)))
2253 return (object)(convert_value.ToDecimal (nf_provider));
2254 else if (conversionType.Equals (typeof (Double)))
2255 return (object)(convert_value.ToDouble (nf_provider));
2256 else if (conversionType.Equals (typeof (Int16)))
2257 return (object)(convert_value.ToInt16 (nf_provider));
2258 else if (conversionType.Equals (typeof (Int32)))
2259 return (object)(convert_value.ToInt32 (nf_provider));
2260 else if (conversionType.Equals (typeof (Int64)))
2261 return (object)(convert_value.ToInt64 (nf_provider));
2262 else if (conversionType.Equals (typeof (SByte)))
2263 return (object)(convert_value.ToSByte (nf_provider));
2264 else if (conversionType.Equals (typeof (Single)))
2265 return (object)(convert_value.ToSingle (nf_provider));
2266 else if (conversionType.Equals (typeof (String)))
2267 return (object)(convert_value.ToString (nf_provider));
2268 else if (conversionType.Equals (typeof (UInt16)))
2269 return (object)(convert_value.ToUInt16 (nf_provider));
2270 else if (conversionType.Equals (typeof (UInt32)))
2271 return (object)(convert_value.ToUInt32 (nf_provider));
2272 else if (conversionType.Equals (typeof (UInt64)))
2273 return (object)(convert_value.ToUInt64 (nf_provider));
2274 else if (conversionType.Equals (typeof (Object)))
2275 return (object)(value);
2285 // This is needed, because enumerations from assemblies
2286 // do not report their underlyingtype, but they report
2289 public static Type EnumToUnderlying (Type t)
2291 if (t == TypeManager.enum_type)
2294 t = t.UnderlyingSystemType;
2295 if (!TypeManager.IsEnumType (t))
2298 if (t is TypeBuilder) {
2299 // slow path needed to compile corlib
2300 if (t == TypeManager.bool_type ||
2301 t == TypeManager.byte_type ||
2302 t == TypeManager.sbyte_type ||
2303 t == TypeManager.char_type ||
2304 t == TypeManager.short_type ||
2305 t == TypeManager.ushort_type ||
2306 t == TypeManager.int32_type ||
2307 t == TypeManager.uint32_type ||
2308 t == TypeManager.int64_type ||
2309 t == TypeManager.uint64_type)
2311 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
2313 TypeCode tc = Type.GetTypeCode (t);
2316 case TypeCode.Boolean:
2317 return TypeManager.bool_type;
2319 return TypeManager.byte_type;
2320 case TypeCode.SByte:
2321 return TypeManager.sbyte_type;
2323 return TypeManager.char_type;
2324 case TypeCode.Int16:
2325 return TypeManager.short_type;
2326 case TypeCode.UInt16:
2327 return TypeManager.ushort_type;
2328 case TypeCode.Int32:
2329 return TypeManager.int32_type;
2330 case TypeCode.UInt32:
2331 return TypeManager.uint32_type;
2332 case TypeCode.Int64:
2333 return TypeManager.int64_type;
2334 case TypeCode.UInt64:
2335 return TypeManager.uint64_type;
2337 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
2341 // When compiling corlib and called with one of the core types, return
2342 // the corresponding typebuilder for that type.
2344 public static Type TypeToCoreType (Type t)
2346 if (RootContext.StdLib || (t is TypeBuilder))
2349 TypeCode tc = Type.GetTypeCode (t);
2352 case TypeCode.Boolean:
2353 return TypeManager.bool_type;
2355 return TypeManager.byte_type;
2356 case TypeCode.SByte:
2357 return TypeManager.sbyte_type;
2359 return TypeManager.char_type;
2360 case TypeCode.Int16:
2361 return TypeManager.short_type;
2362 case TypeCode.UInt16:
2363 return TypeManager.ushort_type;
2364 case TypeCode.Int32:
2365 return TypeManager.int32_type;
2366 case TypeCode.UInt32:
2367 return TypeManager.uint32_type;
2368 case TypeCode.Int64:
2369 return TypeManager.int64_type;
2370 case TypeCode.UInt64:
2371 return TypeManager.uint64_type;
2372 case TypeCode.Single:
2373 return TypeManager.float_type;
2374 case TypeCode.Double:
2375 return TypeManager.double_type;
2376 case TypeCode.String:
2377 return TypeManager.string_type;
2379 if (t == typeof (void))
2380 return TypeManager.void_type;
2381 if (t == typeof (object))
2382 return TypeManager.object_type;
2383 if (t == typeof (System.Type))
2384 return TypeManager.type_type;
2390 /// Utility function that can be used to probe whether a type
2391 /// is managed or not.
2393 public static bool VerifyUnManaged (Type t, Location loc)
2395 if (t.IsValueType || t.IsPointer){
2397 // FIXME: this is more complex, we actually need to
2398 // make sure that the type does not contain any
2404 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2405 // We need this explicit check here to make it work when
2406 // compiling corlib.
2411 "Cannot take the address or size of a variable of a managed type ('" +
2412 CSharpName (t) + "')");
2417 /// Returns the name of the indexer in a given type.
2420 /// The default is not always `Item'. The user can change this behaviour by
2421 /// using the DefaultMemberAttribute in the class.
2423 /// For example, the String class indexer is named `Chars' not `Item'
2425 public static string IndexerPropertyName (Type t)
2427 if (t.IsGenericInstance)
2428 t = t.GetGenericTypeDefinition ();
2430 if (t is TypeBuilder) {
2431 if (t.IsInterface) {
2432 Interface i = LookupInterface (t);
2434 if ((i == null) || (i.IndexerName == null))
2437 return i.IndexerName;
2439 TypeContainer tc = LookupTypeContainer (t);
2441 if ((tc == null) || (tc.IndexerName == null))
2444 return tc.IndexerName;
2448 System.Attribute attr = System.Attribute.GetCustomAttribute (
2449 t, TypeManager.default_member_type);
2451 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2452 return dma.MemberName;
2458 public static void MakePinned (LocalBuilder builder)
2461 // FIXME: Flag the "LocalBuilder" type as being
2462 // pinned. Figure out API.
2468 // Returns whether the array of memberinfos contains the given method
2470 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2472 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2474 foreach (MethodBase method in array) {
2475 if (method.Name != new_method.Name)
2478 if (method is MethodInfo && new_method is MethodInfo)
2479 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2483 Type [] old_args = TypeManager.GetArgumentTypes (method);
2484 int old_count = old_args.Length;
2487 if (new_args.Length != old_count)
2490 for (i = 0; i < old_count; i++){
2491 if (old_args [i] != new_args [i])
2504 // We copy methods from `new_members' into `target_list' if the signature
2505 // for the method from in the new list does not exist in the target_list
2507 // The name is assumed to be the same.
2509 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
2511 if (target_list == null){
2512 target_list = new ArrayList ();
2514 foreach (MemberInfo mi in new_members){
2515 if (mi is MethodBase)
2516 target_list.Add (mi);
2521 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2522 target_list.CopyTo (target_array, 0);
2524 foreach (MemberInfo mi in new_members){
2525 MethodBase new_method = (MethodBase) mi;
2527 if (!ArrayContainsMethod (target_array, new_method))
2528 target_list.Add (new_method);
2534 public enum MethodFlags {
2536 IsObsoleteError = 1 << 1,
2537 ShouldIgnore = 1 << 2
2540 static public bool IsGenericMethod (MethodBase mb)
2542 if (mb.DeclaringType is TypeBuilder) {
2543 MethodData method = (MethodData) builder_to_method [mb];
2547 return method.GenericMethod != null;
2550 return mb.IsGenericMethodDefinition;
2554 // Returns the TypeManager.MethodFlags for this method.
2555 // This emits an error 619 / warning 618 if the method is obsolete.
2556 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
2558 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
2560 MethodFlags flags = 0;
2562 if (mb.Mono_IsInflatedMethod)
2563 mb = mb.GetGenericMethodDefinition ();
2565 if (mb.DeclaringType is TypeBuilder){
2566 MethodData method = (MethodData) builder_to_method [mb];
2567 if (method == null) {
2568 // FIXME: implement Obsolete attribute on Property,
2569 // Indexer and Event.
2573 return method.GetMethodFlags (loc);
2576 object [] attrs = mb.GetCustomAttributes (true);
2577 foreach (object ta in attrs){
2578 if (!(ta is System.Attribute)){
2579 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
2582 System.Attribute a = (System.Attribute) ta;
2583 if (a.TypeId == TypeManager.obsolete_attribute_type){
2584 ObsoleteAttribute oa = (ObsoleteAttribute) a;
2586 string method_desc = TypeManager.CSharpSignature (mb);
2589 Report.Error (619, loc, "Method `" + method_desc +
2590 "' is obsolete: `" + oa.Message + "'");
2591 return MethodFlags.IsObsoleteError;
2593 Report.Warning (618, loc, "Method `" + method_desc +
2594 "' is obsolete: `" + oa.Message + "'");
2596 flags |= MethodFlags.IsObsolete;
2602 // Skip over conditional code.
2604 if (a.TypeId == TypeManager.conditional_attribute_type){
2605 ConditionalAttribute ca = (ConditionalAttribute) a;
2607 if (RootContext.AllDefines [ca.ConditionString] == null)
2608 flags |= MethodFlags.ShouldIgnore;
2615 #region MemberLookup implementation
2618 // Whether we allow private members in the result (since FindMembers
2619 // uses NonPublic for both protected and private), we need to distinguish.
2621 static bool closure_private_ok;
2624 // Who is invoking us and which type is being queried currently.
2626 static Type closure_invocation_type;
2627 static Type closure_qualifier_type;
2628 static int closure_num_type_arguments;
2631 // The assembly that defines the type is that is calling us
2633 static Assembly closure_invocation_assembly;
2635 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2641 // This filter filters by name + whether it is ok to include private
2642 // members in the search
2644 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
2647 // Hack: we know that the filter criteria will always be in the `closure'
2651 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2655 return TypeManager.CheckGeneric ((Type) m, closure_num_type_arguments);
2657 if (((closure_qualifier_type == null) || (closure_qualifier_type == closure_invocation_type)) &&
2658 (closure_invocation_type != null) && IsEqual (m.DeclaringType, closure_invocation_type))
2662 // Ugly: we need to find out the type of `m', and depending
2663 // on this, tell whether we accept or not
2665 if (m is MethodBase){
2666 MethodBase mb = (MethodBase) m;
2667 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2669 if (ma == MethodAttributes.Private)
2670 return closure_private_ok ||
2671 IsEqual (closure_invocation_type, m.DeclaringType) ||
2672 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2675 // FamAndAssem requires that we not only derivate, but we are on the
2678 if (ma == MethodAttributes.FamANDAssem){
2679 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
2683 // Assembly and FamORAssem succeed if we're in the same assembly.
2684 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2685 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
2689 // We already know that we aren't in the same assembly.
2690 if (ma == MethodAttributes.Assembly)
2693 // Family and FamANDAssem require that we derive.
2694 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2695 if (closure_invocation_type == null)
2698 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2701 // Although a derived class can access protected members of its base class
2702 // it cannot do so through an instance of the base class (CS1540).
2703 if (!mb.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2704 (closure_qualifier_type != null) &&
2705 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2715 if (m is FieldInfo){
2716 FieldInfo fi = (FieldInfo) m;
2717 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2719 if (fa == FieldAttributes.Private)
2720 return closure_private_ok ||
2721 IsEqual (closure_invocation_type, m.DeclaringType) ||
2722 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2725 // FamAndAssem requires that we not only derivate, but we are on the
2728 if (fa == FieldAttributes.FamANDAssem){
2729 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2733 // Assembly and FamORAssem succeed if we're in the same assembly.
2734 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2735 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2739 // We already know that we aren't in the same assembly.
2740 if (fa == FieldAttributes.Assembly)
2743 // Family and FamANDAssem require that we derive.
2744 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2745 if (closure_invocation_type == null)
2748 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2751 // Although a derived class can access protected members of its base class
2752 // it cannot do so through an instance of the base class (CS1540).
2753 if (!fi.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2754 (closure_qualifier_type != null) &&
2755 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2766 // EventInfos and PropertyInfos, return true because they lack permission
2767 // informaiton, so we need to check later on the methods.
2772 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2773 static MemberFilter FilterNone_delegate = new MemberFilter (FilterNone);
2776 // Looks up a member called `name' in the `queried_type'. This lookup
2777 // is done by code that is contained in the definition for `invocation_type'
2778 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2780 // `invocation_type' is used to check whether we're allowed to access the requested
2781 // member wrt its protection level.
2783 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2784 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2785 // is B and qualifier_type is A). This is used to do the CS1540 check.
2787 // When resolving a SimpleName, `qualifier_type' is null.
2789 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2790 // the same than `queried_type' - except when we're being called from BaseAccess;
2791 // in this case, `invocation_type' is the current type and `queried_type' the base
2792 // type, so this'd normally trigger a CS1540.
2794 // The binding flags are `bf' and the kind of members being looked up are `mt'
2796 // The return value always includes private members which code in `invocation_type'
2797 // is allowed to access (using the specified `qualifier_type' if given); only use
2798 // BindingFlags.NonPublic to bypass the permission check.
2800 // Returns an array of a single element for everything but Methods/Constructors
2801 // that might return multiple matches.
2803 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2804 Type queried_type, int num_type_arguments,
2805 MemberTypes mt, BindingFlags original_bf,
2808 Timer.StartTimer (TimerType.MemberLookup);
2810 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2811 queried_type, num_type_arguments,
2812 mt, original_bf, name);
2814 Timer.StopTimer (TimerType.MemberLookup);
2819 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2820 Type queried_type, int num_type_arguments,
2821 MemberTypes mt, BindingFlags original_bf,
2824 BindingFlags bf = original_bf;
2826 ArrayList method_list = null;
2827 Type current_type = queried_type;
2828 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2829 bool skip_iface_check = true, used_cache = false;
2830 bool always_ok_flag = false;
2832 closure_invocation_type = invocation_type;
2833 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2834 closure_qualifier_type = qualifier_type;
2836 closure_num_type_arguments = num_type_arguments;
2839 // If we are a nested class, we always have access to our container
2842 if (invocation_type != null){
2843 string invocation_name = invocation_type.FullName;
2844 if (invocation_name.IndexOf ('+') != -1){
2845 string container = queried_type.FullName + "+";
2846 int container_length = container.Length;
2848 if (invocation_name.Length > container_length){
2849 string shared = invocation_name.Substring (0, container_length);
2851 if (shared == container)
2852 always_ok_flag = true;
2861 // `NonPublic' is lame, because it includes both protected and
2862 // private methods, so we need to control this behavior by
2863 // explicitly tracking if a private method is ok or not.
2865 // The possible cases are:
2866 // public, private and protected (internal does not come into the
2869 if ((invocation_type != null) &&
2870 ((invocation_type == current_type) ||
2871 IsNestedChildOf (invocation_type, current_type)) ||
2873 bf = original_bf | BindingFlags.NonPublic;
2877 closure_private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2879 Timer.StopTimer (TimerType.MemberLookup);
2881 list = MemberLookup_FindMembers (current_type, mt, bf, name,
2882 num_type_arguments, out used_cache);
2884 Timer.StartTimer (TimerType.MemberLookup);
2887 // When queried for an interface type, the cache will automatically check all
2888 // inherited members, so we don't need to do this here. However, this only
2889 // works if we already used the cache in the first iteration of this loop.
2891 // If we used the cache in any further iteration, we can still terminate the
2892 // loop since the cache always looks in all parent classes.
2898 skip_iface_check = false;
2900 if (current_type == TypeManager.object_type)
2903 current_type = current_type.BaseType;
2906 // This happens with interfaces, they have a null
2907 // basetype. Look members up in the Object class.
2909 if (current_type == null)
2910 current_type = TypeManager.object_type;
2913 if (list.Count == 0)
2917 // Events and types are returned by both `static' and `instance'
2918 // searches, which means that our above FindMembers will
2919 // return two copies of the same.
2921 if (list.Count == 1 && !(list [0] is MethodBase)){
2922 return (MemberInfo []) list;
2926 // Multiple properties: we query those just to find out the indexer
2929 if (list [0] is PropertyInfo)
2930 return (MemberInfo []) list;
2933 // We found an event: the cache lookup returns both the event and
2934 // its private field.
2936 if (list [0] is EventInfo) {
2937 if ((list.Count == 2) && (list [1] is FieldInfo))
2938 return new MemberInfo [] { list [0] };
2945 // We found methods, turn the search into "method scan"
2949 method_list = CopyNewMethods (method_list, list);
2950 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2951 } while (searching);
2953 if (method_list != null && method_list.Count > 0) {
2954 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2957 // This happens if we already used the cache in the first iteration, in this case
2958 // the cache already looked in all interfaces.
2960 if (skip_iface_check)
2964 // Interfaces do not list members they inherit, so we have to
2967 if (!queried_type.IsInterface)
2970 if (queried_type.IsArray)
2971 queried_type = TypeManager.array_type;
2973 TypeExpr [] ifaces = GetInterfaces (queried_type);
2977 foreach (TypeExpr itype in ifaces){
2980 x = MemberLookup (null, null, itype.Type, num_type_arguments,
2990 // This is used to extract properties and event declarations from a type
2992 static MemberInfo [] SpecialContainerLookup (Type t, bool is_static)
2994 BindingFlags bf = BindingFlags.DeclaredOnly | (is_static ? BindingFlags.Static : BindingFlags.Instance);
2996 bf |= BindingFlags.Public | BindingFlags.NonPublic;
2998 if (t is TypeBuilder) {
2999 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
3001 return (MemberInfo []) decl.FindMembers (
3002 MemberTypes.Property | MemberTypes.Event,
3003 bf, FilterNone_delegate, null);
3005 return t.FindMembers (MemberTypes.Property | MemberTypes.Event,
3006 bf, FilterNone_delegate, null);
3011 public static bool IsSpecialMethod (MethodBase mb)
3013 Type t = mb.DeclaringType;
3015 MemberInfo [] matches = TypeManager.SpecialContainerLookup (t, mb.IsStatic);
3016 if (matches == null)
3019 foreach (MemberInfo mi in matches){
3020 if (mi is PropertyBuilder){
3021 Pair p = (Pair) properties [mi];
3023 if (p.First == mb || p.Second == mb)
3025 } else if (mi is PropertyInfo){
3026 MethodInfo [] methods = ((PropertyInfo) mi).GetAccessors (true);
3028 foreach (MethodInfo m in methods){
3032 } else if (mi is MyEventBuilder){
3033 Pair p = (Pair) events [mi];
3035 if (p.First == mb || p.Second == mb)
3037 } else if (mi is EventInfo){
3038 EventInfo ei = ((EventInfo) mi);
3040 if (ei.GetAddMethod (true) == mb)
3043 if (ei.GetRemoveMethod (true) == mb)
3046 if (ei.GetRaiseMethod (true) == mb)
3052 // Now check if it is an operator method
3056 if (s.StartsWith ("op_")){
3057 foreach (string name in Unary.oper_names){
3062 foreach (string name in Binary.oper_names){
3076 /// There is exactly one instance of this class per type.
3078 public sealed class TypeHandle : IMemberContainer {
3079 public readonly TypeHandle BaseType;
3081 readonly int id = ++next_id;
3082 static int next_id = 0;
3085 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
3086 /// a TypeHandle yet, a new instance of it is created. This static method
3087 /// ensures that we'll only have one TypeHandle instance per type.
3089 public static TypeHandle GetTypeHandle (Type t)
3091 TypeHandle handle = (TypeHandle) type_hash [t];
3095 handle = new TypeHandle (t);
3096 type_hash.Add (t, handle);
3100 public static void CleanUp ()
3106 /// Returns the TypeHandle for TypeManager.object_type.
3108 public static IMemberContainer ObjectType {
3110 if (object_type != null)
3113 object_type = GetTypeHandle (TypeManager.object_type);
3120 /// Returns the TypeHandle for TypeManager.array_type.
3122 public static IMemberContainer ArrayType {
3124 if (array_type != null)
3127 array_type = GetTypeHandle (TypeManager.array_type);
3133 private static PtrHashtable type_hash = new PtrHashtable ();
3135 private static TypeHandle object_type = null;
3136 private static TypeHandle array_type = null;
3139 private bool is_interface;
3140 private MemberCache member_cache;
3142 private TypeHandle (Type type)
3145 if (type.BaseType != null)
3146 BaseType = GetTypeHandle (type.BaseType);
3147 this.is_interface = type.IsInterface || type.IsGenericParameter;
3148 this.member_cache = new MemberCache (this);
3151 // IMemberContainer methods
3153 public string Name {
3155 return type.FullName;
3165 public IMemberContainer Parent {
3171 public bool IsInterface {
3173 return is_interface;
3177 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
3179 MemberInfo [] members;
3180 if (mt == MemberTypes.Event)
3181 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
3183 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
3185 Array.Reverse (members);
3187 return new MemberList (members);
3190 // IMemberFinder methods
3192 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
3193 MemberFilter filter, object criteria)
3195 return member_cache.FindMembers (mt, bf, name, filter, criteria);
3198 public MemberCache MemberCache {
3200 return member_cache;
3204 public override string ToString ()
3206 if (BaseType != null)
3207 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
3209 return "TypeHandle (" + id + "," + Name + ")";