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)
13 using System.Globalization;
14 using System.Collections;
15 using System.Reflection;
16 using System.Reflection.Emit;
17 using System.Text.RegularExpressions;
18 using System.Runtime.CompilerServices;
19 using System.Diagnostics;
21 namespace Mono.MonoBASIC {
23 public class TypeManager {
25 // A list of core types that the compiler requires or uses
27 static public Type object_type;
28 static public Type value_type;
29 static public Type string_type;
30 static public Type int32_type;
31 static public Type uint32_type;
32 static public Type int64_type;
33 static public Type uint64_type;
34 static public Type float_type;
35 static public Type double_type;
36 static public Type char_type;
37 static public Type char_ptr_type;
38 static public Type short_type;
39 static public Type decimal_type;
40 static public Type date_type;
41 static public Type bool_type;
42 static public Type sbyte_type;
43 static public Type byte_type;
44 static public Type ushort_type;
45 static public Type enum_type;
46 static public Type delegate_type;
47 static public Type multicast_delegate_type;
48 static public Type void_type;
49 static public Type enumeration_type;
50 static public Type array_type;
51 static public Type runtime_handle_type;
52 static public Type icloneable_type;
53 static public Type type_type;
54 static public Type ienumerator_type;
55 static public Type idisposable_type;
56 static public Type default_member_type;
57 static public Type iasyncresult_type;
58 static public Type asynccallback_type;
59 static public Type intptr_type;
60 static public Type monitor_type;
61 static public Type runtime_field_handle_type;
62 static public Type attribute_type;
63 static public Type attribute_usage_type;
64 static public Type dllimport_type;
65 static public Type unverifiable_code_type;
66 static public Type methodimpl_attr_type;
67 static public Type marshal_as_attr_type;
68 static public Type param_array_type;
69 static public Type void_ptr_type;
70 static public Type indexer_name_type;
71 static public Type exception_type;
72 static public object obsolete_attribute_type;
73 static public object conditional_attribute_type;
76 // An empty array of types
78 static public Type [] NoTypes;
82 // Expressions representing the internal types. Used during declaration
85 static public Expression system_object_expr, system_string_expr;
86 static public Expression system_boolean_expr, system_decimal_expr;
87 static public Expression system_single_expr, system_double_expr;
88 static public Expression system_sbyte_expr, system_byte_expr;
89 static public Expression system_int16_expr, system_uint16_expr;
90 static public Expression system_int32_expr, system_uint32_expr;
91 static public Expression system_int64_expr, system_uint64_expr;
92 static public Expression system_char_expr, system_void_expr;
93 static public Expression system_date_expr;
94 static public Expression system_asynccallback_expr;
95 static public Expression system_iasyncresult_expr;
98 // This is only used when compiling corlib
100 static public Type system_int32_type;
101 static public Type system_array_type;
102 static public Type system_type_type;
103 static public Type system_assemblybuilder_type;
104 static public MethodInfo system_int_array_get_length;
105 static public MethodInfo system_int_array_get_rank;
106 static public MethodInfo system_object_array_clone;
107 static public MethodInfo system_int_array_get_length_int;
108 static public MethodInfo system_int_array_get_lower_bound_int;
109 static public MethodInfo system_int_array_get_upper_bound_int;
110 static public MethodInfo system_void_array_copyto_array_int;
111 static public MethodInfo system_void_set_corlib_type_builders;
115 // Internal, not really used outside
117 static Type runtime_helpers_type;
120 // These methods are called by code generated by the compiler
122 static public MethodInfo string_concat_string_string;
123 static public MethodInfo string_concat_object_object;
124 static public MethodInfo string_isinterneted_string;
125 static public MethodInfo system_type_get_type_from_handle;
126 static public MethodInfo object_getcurrent_void;
127 static public MethodInfo bool_movenext_void;
128 static public MethodInfo void_dispose_void;
129 static public MethodInfo void_monitor_enter_object;
130 static public MethodInfo void_monitor_exit_object;
131 static public MethodInfo void_initializearray_array_fieldhandle;
132 static public MethodInfo int_getlength_int;
133 static public MethodInfo delegate_combine_delegate_delegate;
134 static public MethodInfo delegate_remove_delegate_delegate;
135 static public MethodInfo int_get_offset_to_string_data;
136 static public MethodInfo int_array_get_length;
137 static public MethodInfo int_array_get_rank;
138 static public MethodInfo object_array_clone;
139 static public MethodInfo int_array_get_length_int;
140 static public MethodInfo int_array_get_lower_bound_int;
141 static public MethodInfo int_array_get_upper_bound_int;
142 static public MethodInfo void_array_copyto_array_int;
145 // The attribute constructors.
147 static public ConstructorInfo cons_param_array_attribute;
148 static public ConstructorInfo void_decimal_ctor_five_args;
149 static public ConstructorInfo void_datetime_ctor_ticks_arg;
150 static public ConstructorInfo unverifiable_code_ctor;
153 // Holds the Array of Assemblies that have been loaded
154 // (either because it is the default or the user used the
155 // -r command line option)
157 static Assembly [] assemblies;
160 // Keeps a list of module builders. We used this to do lookups
161 // on the modulebuilder using GetType -- needed for arrays
163 static ModuleBuilder [] modules;
166 // This is the type_cache from the assemblies to avoid
167 // hitting System.Reflection on every lookup.
169 static CaseInsensitiveHashtable types;
172 // This is used to hotld the corresponding TypeContainer objects
173 // since we need this in FindMembers
175 static CaseInsensitiveHashtable typecontainers;
178 // Keeps track of those types that are defined by the
181 static ArrayList user_types;
183 static PtrHashtable builder_to_declspace;
186 // Tracks the interfaces implemented by typebuilders. We only
187 // enter those who do implement or or more interfaces
189 static PtrHashtable builder_to_ifaces;
192 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
193 // the arguments to the method
195 static Hashtable method_arguments;
198 // Maps PropertyBuilder to a Type array that contains
199 // the arguments to the indexer
201 static Hashtable indexer_arguments;
204 // Maybe 'method_arguments' should be replaced and only
205 // method_internal_params should be kept?
207 static Hashtable method_internal_params;
210 // Keeps track of attribute types
213 static Hashtable builder_to_attr;
216 // Keeps track of methods
219 static Hashtable builder_to_method;
227 /// A filter for Findmembers that uses the Signature object to
230 static bool SignatureFilter (MemberInfo mi, object criteria)
232 Signature sig = (Signature) criteria;
234 if (!(mi is MethodBase))
237 if (mi.Name != sig.name)
240 int count = sig.args.Length;
242 if (mi is MethodBuilder || mi is ConstructorBuilder){
243 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
245 if (candidate_args.Length != count)
248 for (int i = 0; i < count; i++)
249 if (candidate_args [i] != sig.args [i])
254 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
256 if (pars.Length != count)
259 for (int i = 0; i < count; i++)
260 if (pars [i].ParameterType != sig.args [i])
266 // A delegate that points to the filter above.
267 static MemberFilter signature_filter;
270 // These are expressions that represent some of the internal data types, used
273 static void InitExpressionTypes ()
275 system_object_expr = new TypeLookupExpression ("System.Object");
276 system_string_expr = new TypeLookupExpression ("System.String");
277 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
278 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
279 system_single_expr = new TypeLookupExpression ("System.Single");
280 system_double_expr = new TypeLookupExpression ("System.Double");
281 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
282 system_byte_expr = new TypeLookupExpression ("System.Byte");
283 system_int16_expr = new TypeLookupExpression ("System.Int16");
284 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
285 system_int32_expr = new TypeLookupExpression ("System.Int32");
286 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
287 system_int64_expr = new TypeLookupExpression ("System.Int64");
288 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
289 system_char_expr = new TypeLookupExpression ("System.Char");
290 system_void_expr = new TypeLookupExpression ("System.Void");
291 system_date_expr = new TypeLookupExpression ("System.DateTime");
292 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
293 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
296 static TypeManager ()
298 assemblies = new Assembly [0];
300 user_types = new ArrayList ();
302 types = new CaseInsensitiveHashtable ();
303 typecontainers = new CaseInsensitiveHashtable ();
305 builder_to_declspace = new PtrHashtable ();
306 builder_to_attr = new PtrHashtable ();
307 builder_to_method = new PtrHashtable ();
308 method_arguments = new PtrHashtable ();
309 method_internal_params = new PtrHashtable ();
310 indexer_arguments = new PtrHashtable ();
311 builder_to_ifaces = new PtrHashtable ();
313 NoTypes = new Type [0];
315 signature_filter = new MemberFilter (SignatureFilter);
316 InitExpressionTypes ();
319 public static void AddUserType (string name, TypeBuilder t, Type [] ifaces)
324 Type prev = (Type) types [name];
325 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
329 // This probably never happens, as we catch this before
331 Report.Error (-17, "The type '" + name + "' has already been defined.");
335 tc = builder_to_declspace [t] as TypeContainer;
338 1595, "The type '" + name + "' is defined in an existing assembly;"+
339 " Using the new definition from: " + tc.Location);
340 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
348 builder_to_ifaces [t] = ifaces;
352 // This entry point is used by types that we define under the covers
354 public static void RegisterBuilder (TypeBuilder tb, Type [] ifaces)
357 builder_to_ifaces [tb] = ifaces;
360 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, Type [] ifaces)
362 builder_to_declspace.Add (t, tc);
363 typecontainers.Add (name, tc);
364 AddUserType (name, t, ifaces);
367 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
370 builder_to_declspace.Add (t, del);
373 public static void AddEnumType (string name, TypeBuilder t, Enum en)
376 builder_to_declspace.Add (t, en);
379 public static void AddUserInterface (string name, TypeBuilder t, Interface i, Type [] ifaces)
381 AddUserType (name, t, ifaces);
382 builder_to_declspace.Add (t, i);
385 public static void AddMethod (MethodBuilder builder, MethodData method)
387 builder_to_method.Add (builder, method);
390 public static void RegisterAttrType (Type t, TypeContainer tc)
392 builder_to_attr.Add (t, tc);
396 /// Returns the TypeContainer whose Type is 't' or null if there is no
397 /// TypeContainer for 't' (ie, the Type comes from a library)
399 public static TypeContainer LookupTypeContainer (Type t)
401 return builder_to_declspace [t] as TypeContainer;
404 public static IMemberContainer LookupMemberContainer (Type t)
406 if (t is TypeBuilder) {
407 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
408 if (container != null)
412 return TypeHandle.GetTypeHandle (t);
415 public static Interface LookupInterface (Type t)
417 return builder_to_declspace [t] as Interface;
420 public static Delegate LookupDelegate (Type t)
422 return builder_to_declspace [t] as Delegate;
425 public static Enum LookupEnum (Type t)
427 return builder_to_declspace [t] as Enum;
430 public static TypeContainer LookupAttr (Type t)
432 return (TypeContainer) builder_to_attr [t];
436 /// Registers an assembly to load types from.
438 public static void AddAssembly (Assembly a)
440 int top = assemblies.Length;
441 Assembly [] n = new Assembly [top + 1];
443 assemblies.CopyTo (n, 0);
450 /// Registers a module builder to lookup types from
452 public static void AddModule (ModuleBuilder mb)
454 int top = modules != null ? modules.Length : 0;
455 ModuleBuilder [] n = new ModuleBuilder [top + 1];
458 modules.CopyTo (n, 0);
464 // Low-level lookup, cache-less
466 static Type LookupTypeReflection (string name)
471 foreach (Assembly a in assemblies){
472 t = a.GetType (name, false, true);
477 foreach (ModuleBuilder mb in modules) {
478 t = mb.GetType (name, false, true);
483 } catch (Exception e) {
484 System.Console.WriteLine("\nERROR: " + e.ToString() + "WHILE EXECUTING LookupTypeReflection(\"" + name + "\")\n");
490 // This function is used when you want to avoid the lookups, and want to go
491 // directly to the source. This will use the cache.
493 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
494 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
495 // way to test things other than doing a fullname compare
497 public static Type LookupTypeDirect (string name)
499 Type t = (Type) types [name];
503 t = LookupTypeReflection (name);
512 /// Returns the Type associated with @name, takes care of the fact that
513 /// reflection expects nested types to be separated from the main type
514 /// with a "+" instead of a "."
516 public static Type LookupType (string name)
521 // First lookup in user defined and cached values
524 t = (Type) types [name];
529 // Optimization: ComposedCast will work with an existing type, and might already have the
530 // full name of the type, so the full system lookup can probably be avoided.
533 string [] elements = name.Split ('.');
534 int count = elements.Length;
536 for (int n = 1; n <= count; n++){
537 string top_level_type = String.Join (".", elements, 0, n);
539 t = (Type) types [top_level_type];
541 t = LookupTypeReflection (top_level_type);
551 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
552 t = LookupTypeDirect (newt);
561 // Returns a list of all namespaces in the assemblies and types loaded.
563 public static CaseInsensitiveHashtable GetNamespaces ()
565 CaseInsensitiveHashtable namespaces = new CaseInsensitiveHashtable ();
567 foreach (Assembly a in assemblies){
568 foreach (Type t in a.GetTypes ()){
569 string ns = t.Namespace;
571 if (namespaces.Contains (ns))
573 namespaces [ns] = ns;
577 foreach (ModuleBuilder mb in modules){
578 foreach (Type t in mb.GetTypes ()){
579 string ns = t.Namespace;
581 if (namespaces.Contains (ns))
583 namespaces [ns] = ns;
590 /// Returns the C# name of a type if possible, or the full type name otherwise
592 static public string MonoBASIC_Name (Type t)
594 return Regex.Replace (t.FullName,
596 @"(Int32|Int16|Int64|Single|Double|Char|Decimal|Byte|Object|Boolean|String|DateTime)" +
598 new MatchEvaluator (MonoBASIC_NameMatch));
601 static String MonoBASIC_NameMatch (Match match)
603 string s = match.Groups [1].Captures [0].Value;
605 Replace ("int32", "integer").
606 Replace ("int16", "short").
607 Replace ("int64", "long").
608 Replace ("datetime", "date")
609 + match.Groups [2].Captures [0].Value;
613 /// Returns the signature of the method
615 static public string MonoBASIC_Signature (MethodBase mb)
620 // FIXME: We should really have a single function to do
621 // everything instead of the following 5 line pattern
623 ParameterData iparams = LookupParametersByBuilder (mb);
625 if (iparams == null){
626 ParameterInfo [] pi = mb.GetParameters ();
627 iparams = new ReflectionParameters (pi);
630 for (int i = 0; i < iparams.Count; i++) {
634 sig += iparams.ParameterDesc(i);
638 return mb.DeclaringType.Name + "." + mb.Name + sig;
642 /// Looks up a type, and aborts if it is not found. This is used
643 /// by types required by the compiler
645 static Type CoreLookupType (string name)
647 Type t = LookupType (name);
650 Report.Error (518, "The predefined type '" + name + "' is not defined or imported");
651 Environment.Exit (0);
658 /// Returns the MethodInfo for a method named 'name' defined
659 /// in type 't' which takes arguments of types 'args'
661 static MethodInfo GetMethod (Type t, string name, Type [] args)
669 list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public| BindingFlags.IgnoreCase,
670 signature_filter, sig);
671 if (list.Count == 0) {
672 Report.Error (-19, "Can not find the core function '" + name + "'");
676 MethodInfo mi = list [0] as MethodInfo;
678 Report.Error (-19, "Can not find the core function '" + name + "'");
686 /// Returns the ConstructorInfo for "args"
688 public static ConstructorInfo GetConstructor (Type t, Type [] args)
696 list = FindMembers (t, MemberTypes.Constructor,
697 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
698 signature_filter, sig);
699 if (list.Count == 0){
700 Report.Error (-19, "Can not find the core constructor for type '" + t.Name + "'");
704 ConstructorInfo ci = list [0] as ConstructorInfo;
706 Report.Error (-19, "Can not find the core constructor for type '" + t.Name + "'");
713 public static void InitEnumUnderlyingTypes ()
716 int32_type = CoreLookupType ("System.Int32");
717 int64_type = CoreLookupType ("System.Int64");
718 uint32_type = CoreLookupType ("System.UInt32");
719 uint64_type = CoreLookupType ("System.UInt64");
720 byte_type = CoreLookupType ("System.Byte");
721 sbyte_type = CoreLookupType ("System.SByte");
722 short_type = CoreLookupType ("System.Int16");
723 ushort_type = CoreLookupType ("System.UInt16");
727 /// The types have to be initialized after the initial
728 /// population of the type has happened (for example, to
729 /// bootstrap the corlib.dll
731 public static void InitCoreTypes ()
733 object_type = CoreLookupType ("System.Object");
734 value_type = CoreLookupType ("System.ValueType");
736 InitEnumUnderlyingTypes ();
738 char_type = CoreLookupType ("System.Char");
739 string_type = CoreLookupType ("System.String");
740 float_type = CoreLookupType ("System.Single");
741 double_type = CoreLookupType ("System.Double");
742 char_ptr_type = CoreLookupType ("System.Char*");
743 decimal_type = CoreLookupType ("System.Decimal");
744 bool_type = CoreLookupType ("System.Boolean");
745 enum_type = CoreLookupType ("System.Enum");
747 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
748 delegate_type = CoreLookupType ("System.Delegate");
750 array_type = CoreLookupType ("System.Array");
751 void_type = CoreLookupType ("System.Void");
752 date_type = CoreLookupType ("System.DateTime");
753 type_type = CoreLookupType ("System.Type");
755 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
756 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
757 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
758 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
759 asynccallback_type = CoreLookupType ("System.AsyncCallback");
760 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
761 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
762 idisposable_type = CoreLookupType ("System.IDisposable");
763 icloneable_type = CoreLookupType ("System.ICloneable");
764 monitor_type = CoreLookupType ("System.Threading.Monitor");
765 intptr_type = CoreLookupType ("System.IntPtr");
767 attribute_type = CoreLookupType ("System.Attribute");
768 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
769 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
770 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
771 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
772 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
774 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
776 void_ptr_type = CoreLookupType ("System.Void*");
778 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
780 exception_type = CoreLookupType ("System.Exception");
785 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
786 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
789 // When compiling corlib, store the "real" types here.
791 if (!RootContext.StdLib) {
792 system_int32_type = typeof (System.Int32);
793 system_array_type = typeof (System.Array);
794 system_type_type = typeof (System.Type);
795 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
797 Type [] void_arg = { };
798 system_int_array_get_length = GetMethod (
799 system_array_type, "get_Length", void_arg);
800 system_int_array_get_rank = GetMethod (
801 system_array_type, "get_Rank", void_arg);
802 system_object_array_clone = GetMethod (
803 system_array_type, "Clone", void_arg);
805 Type [] system_int_arg = { system_int32_type };
806 system_int_array_get_length_int = GetMethod (
807 system_array_type, "GetLength", system_int_arg);
808 system_int_array_get_upper_bound_int = GetMethod (
809 system_array_type, "GetUpperBound", system_int_arg);
810 system_int_array_get_lower_bound_int = GetMethod (
811 system_array_type, "GetLowerBound", system_int_arg);
813 Type [] system_array_int_arg = { system_array_type, system_int32_type };
814 system_void_array_copyto_array_int = GetMethod (
815 system_array_type, "CopyTo", system_array_int_arg);
817 Type [] system_type_type_arg = { system_type_type, system_type_type, system_type_type };
820 system_void_set_corlib_type_builders = GetMethod (
821 system_assemblybuilder_type, "SetCorlibTypeBuilders",
822 system_type_type_arg);
824 object[] args = new object [3];
825 args [0] = object_type;
826 args [1] = value_type;
827 args [2] = enum_type;
829 system_void_set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
831 Console.WriteLine ("Corlib compilation is not supported in Microsoft.NET due to bugs in it");
837 // The helper methods that are used by the compiler
839 public static void InitCodeHelpers ()
842 // Now load the default methods that we use.
844 Type [] string_string = { string_type, string_type };
845 string_concat_string_string = GetMethod (
846 string_type, "Concat", string_string);
848 Type [] object_object = { object_type, object_type };
849 string_concat_object_object = GetMethod (
850 string_type, "Concat", object_object);
852 Type [] string_ = { string_type };
853 string_isinterneted_string = GetMethod (
854 string_type, "IsInterned", string_);
856 Type [] runtime_type_handle = { runtime_handle_type };
857 system_type_get_type_from_handle = GetMethod (
858 type_type, "GetTypeFromHandle", runtime_type_handle);
860 Type [] delegate_delegate = { delegate_type, delegate_type };
861 delegate_combine_delegate_delegate = GetMethod (
862 delegate_type, "Combine", delegate_delegate);
864 delegate_remove_delegate_delegate = GetMethod (
865 delegate_type, "Remove", delegate_delegate);
870 Type [] void_arg = { };
871 object_getcurrent_void = GetMethod (
872 ienumerator_type, "get_Current", void_arg);
873 bool_movenext_void = GetMethod (
874 ienumerator_type, "MoveNext", void_arg);
875 void_dispose_void = GetMethod (
876 idisposable_type, "Dispose", void_arg);
877 int_get_offset_to_string_data = GetMethod (
878 runtime_helpers_type, "get_OffsetToStringData", void_arg);
879 int_array_get_length = GetMethod (
880 array_type, "get_Length", void_arg);
881 int_array_get_rank = GetMethod (
882 array_type, "get_Rank", void_arg);
887 Type [] int_arg = { int32_type };
888 int_array_get_length_int = GetMethod (
889 array_type, "GetLength", int_arg);
890 int_array_get_upper_bound_int = GetMethod (
891 array_type, "GetUpperBound", int_arg);
892 int_array_get_lower_bound_int = GetMethod (
893 array_type, "GetLowerBound", int_arg);
896 // System.Array methods
898 object_array_clone = GetMethod (
899 array_type, "Clone", void_arg);
900 Type [] array_int_arg = { array_type, int32_type };
901 void_array_copyto_array_int = GetMethod (
902 array_type, "CopyTo", array_int_arg);
907 Type [] object_arg = { object_type };
908 void_monitor_enter_object = GetMethod (
909 monitor_type, "Enter", object_arg);
910 void_monitor_exit_object = GetMethod (
911 monitor_type, "Exit", object_arg);
913 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
915 void_initializearray_array_fieldhandle = GetMethod (
916 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
921 int_getlength_int = GetMethod (
922 array_type, "GetLength", int_arg);
925 // Decimal constructors
927 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
928 void_decimal_ctor_five_args = GetConstructor (
929 decimal_type, dec_arg);
931 // DateTime constructor
932 Type [] ticks_arg = { int64_type };
933 void_datetime_ctor_ticks_arg = GetConstructor ( date_type, ticks_arg);
938 cons_param_array_attribute = GetConstructor (
939 param_array_type, void_arg);
941 unverifiable_code_ctor = GetConstructor (
942 unverifiable_code_type, void_arg);
946 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
948 static CaseInsensitiveHashtable type_hash = new CaseInsensitiveHashtable ();
951 /// This is the "old", non-cache based FindMembers() function. We cannot use
952 /// the cache here because there is no member name argument.
954 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
955 MemberFilter filter, object criteria)
957 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
958 bf |= BindingFlags.IgnoreCase;
960 // 'builder_to_declspace' contains all dynamic types.
964 Timer.StartTimer (TimerType.FindMembers);
965 list = decl.FindMembers (mt, bf, filter, criteria);
966 Timer.StopTimer (TimerType.FindMembers);
971 // We have to take care of arrays specially, because GetType on
972 // a TypeBuilder array will return a Type, not a TypeBuilder,
973 // and we can not call FindMembers on this type.
975 if (t.IsSubclassOf (TypeManager.array_type))
976 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
979 // Since FindMembers will not lookup both static and instance
980 // members, we emulate this behaviour here.
982 if ((bf & instance_and_static) == instance_and_static){
983 MemberInfo [] i_members = t.FindMembers (
984 mt, (bf & ~BindingFlags.Static) | BindingFlags.IgnoreCase, filter, criteria);
986 int i_len = i_members.Length;
988 MemberInfo one = i_members [0];
991 // If any of these are present, we are done!
993 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
994 return new MemberList (i_members);
997 MemberInfo [] s_members = t.FindMembers (
998 mt, (bf & ~BindingFlags.Instance) | BindingFlags.IgnoreCase, filter, criteria);
1000 int s_len = s_members.Length;
1001 if (i_len > 0 || s_len > 0)
1002 return new MemberList (i_members, s_members);
1005 return new MemberList (i_members);
1007 return new MemberList (s_members);
1011 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1016 /// This method is only called from within MemberLookup. It tries to use the member
1017 /// cache if possible and falls back to the normal FindMembers if not. The 'used_cache'
1018 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1019 /// our return value will already contain all inherited members and the caller don't need
1020 /// to check base classes and interfaces anymore.
1022 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1023 string name, out bool used_cache)
1026 // We have to take care of arrays specially, because GetType on
1027 // a TypeBuilder array will return a Type, not a TypeBuilder,
1028 // and we can not call FindMembers on this type.
1030 if (t.IsSubclassOf (TypeManager.array_type)) {
1032 return TypeHandle.ArrayType.MemberCache.FindMembers (
1033 mt, bf, name, FilterWithClosure_delegate, null);
1037 // If this is a dynamic type, it's always in the 'builder_to_declspace' hash table
1038 // and we can ask the DeclSpace for the MemberCache.
1040 if (t is TypeBuilder) {
1041 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1042 MemberCache cache = decl.MemberCache;
1045 // If this DeclSpace has a MemberCache, use it.
1048 if (cache != null) {
1050 return cache.FindMembers (
1051 mt, bf, name, FilterWithClosure_delegate, null);
1054 // If there is no MemberCache, we need to use the "normal" FindMembers.
1057 Timer.StartTimer (TimerType.FindMembers);
1058 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
1059 FilterWithClosure_delegate, name);
1060 Timer.StopTimer (TimerType.FindMembers);
1066 // This call will always succeed. There is exactly one TypeHandle instance per
1067 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1068 // if it didn't already exist.
1070 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1073 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1076 public static bool IsBuiltinType (Type t)
1078 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1079 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1080 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1081 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type ||
1088 public static bool IsDelegateType (Type t)
1090 if (t.IsSubclassOf (TypeManager.delegate_type))
1096 public static bool IsEnumType (Type t)
1098 if (t.IsSubclassOf (TypeManager.enum_type))
1105 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1107 public static bool IsUnmanagedType (Type t)
1109 if (IsBuiltinType (t) && t != TypeManager.string_type)
1118 if (IsValueType (t)){
1119 if (t is TypeBuilder){
1120 TypeContainer tc = LookupTypeContainer (t);
1122 foreach (Field f in tc.Fields){
1123 if (f.FieldBuilder.IsStatic)
1125 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1129 FieldInfo [] fields = t.GetFields ();
1131 foreach (FieldInfo f in fields){
1134 if (!IsUnmanagedType (f.FieldType))
1144 public static bool IsValueType (Type t)
1146 if (t.IsSubclassOf (TypeManager.value_type))
1152 public static bool IsInterfaceType (Type t)
1154 Interface iface = builder_to_declspace [t] as Interface;
1163 // Checks whether 'type' is a subclass or nested child of 'parent'.
1165 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1168 if ((type == parent) || type.IsSubclassOf (parent))
1171 // Handle nested types.
1172 type = type.DeclaringType;
1173 } while (type != null);
1179 // Checks whether 'type' is a nested child of 'parent'.
1181 public static bool IsNestedChildOf (Type type, Type parent)
1183 if ((type == parent) || type.IsSubclassOf (parent))
1186 return IsSubclassOrNestedChildOf (type, parent);
1190 /// Returns the User Defined Types
1192 public static ArrayList UserTypes {
1198 public static CaseInsensitiveHashtable TypeContainers {
1200 return typecontainers;
1204 static Hashtable builder_to_constant;
1206 public static void RegisterConstant (FieldBuilder fb, Const c)
1208 if (builder_to_constant == null)
1209 builder_to_constant = new PtrHashtable ();
1211 if (builder_to_constant.Contains (fb))
1214 builder_to_constant.Add (fb, c);
1217 public static Const LookupConstant (FieldBuilder fb)
1219 if (builder_to_constant == null)
1222 return (Const) builder_to_constant [fb];
1226 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1230 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1231 /// for anything which is dynamic, and we need this in a number of places,
1232 /// we register this information here, and use it afterwards.
1234 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1239 method_arguments.Add (mb, args);
1240 method_internal_params.Add (mb, ip);
1245 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1247 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1250 if (method_internal_params.Contains (mb))
1251 return (InternalParameters) method_internal_params [mb];
1253 throw new Exception ("Argument for Method not registered" + mb);
1257 /// Returns the argument types for a method based on its methodbase
1259 /// For dynamic methods, we use the compiler provided types, for
1260 /// methods from existing assemblies we load them from GetParameters,
1261 /// and insert them into the cache
1263 static public Type [] GetArgumentTypes (MethodBase mb)
1265 if (method_arguments.Contains (mb))
1266 return (Type []) method_arguments [mb];
1268 ParameterInfo [] pi = mb.GetParameters ();
1270 Type [] types = new Type [c];
1272 for (int i = 0; i < c; i++)
1273 types [i] = pi [i].ParameterType;
1275 method_arguments.Add (mb, types);
1281 /// Returns the argument types for an indexer based on its PropertyInfo
1283 /// For dynamic indexers, we use the compiler provided types, for
1284 /// indexers from existing assemblies we load them from GetParameters,
1285 /// and insert them into the cache
1287 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1289 if (indexer_arguments.Contains (indexer))
1290 return (Type []) indexer_arguments [indexer];
1291 else if (indexer is PropertyBuilder)
1292 // If we're a PropertyBuilder and not in the
1293 // 'indexer_arguments' hash, then we're a property and
1297 ParameterInfo [] pi = indexer.GetIndexParameters ();
1298 // Property, not an indexer.
1302 Type [] types = new Type [c];
1304 for (int i = 0; i < c; i++)
1305 types [i] = pi [i].ParameterType;
1307 indexer_arguments.Add (indexer, types);
1313 // This is a workaround the fact that GetValue is not
1314 // supported for dynamic types
1316 static CaseInsensitiveHashtable fields = new CaseInsensitiveHashtable ();
1317 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1319 if (fields.Contains (fb))
1322 fields.Add (fb, value);
1327 static public object GetValue (FieldBuilder fb)
1332 static CaseInsensitiveHashtable fieldbuilders_to_fields = new CaseInsensitiveHashtable ();
1333 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1335 if (fieldbuilders_to_fields.Contains (fb))
1338 fieldbuilders_to_fields.Add (fb, f);
1342 static public FieldBase GetField (FieldInfo fb)
1344 return (FieldBase) fieldbuilders_to_fields [fb];
1347 static CaseInsensitiveHashtable events;
1349 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1352 events = new CaseInsensitiveHashtable ();
1354 if (events.Contains (eb))
1357 events.Add (eb, new Pair (add, remove));
1362 static public MethodInfo GetAddMethod (EventInfo ei)
1364 if (ei is MyEventBuilder) {
1365 Pair pair = (Pair) events [ei];
1367 return (MethodInfo) pair.First;
1369 return ei.GetAddMethod ();
1372 static public MethodInfo GetRemoveMethod (EventInfo ei)
1374 if (ei is MyEventBuilder) {
1375 Pair pair = (Pair) events [ei];
1377 return (MethodInfo) pair.Second;
1379 return ei.GetAddMethod ();
1382 static CaseInsensitiveHashtable priv_fields_events;
1384 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1386 if (priv_fields_events == null)
1387 priv_fields_events = new CaseInsensitiveHashtable ();
1389 if (priv_fields_events.Contains (einfo))
1392 priv_fields_events.Add (einfo, builder);
1397 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1399 return (MemberInfo) priv_fields_events [ei];
1402 static CaseInsensitiveHashtable properties;
1404 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1406 if (properties == null)
1407 properties = new CaseInsensitiveHashtable ();
1409 if (properties.Contains (pb))
1412 properties.Add (pb, new Pair (get, set));
1417 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get, MethodBase set, Type[] args)
1419 if (!RegisterProperty (pb, get,set))
1422 indexer_arguments.Add (pb, args);
1427 static public MethodInfo GetPropertyGetter (PropertyInfo pi)
1429 if (pi is PropertyBuilder){
1430 Pair de = (Pair) properties [pi];
1432 return (MethodInfo) de.Second;
1434 return pi.GetSetMethod ();
1437 static public MethodInfo GetPropertySetter (PropertyInfo pi)
1439 if (pi is PropertyBuilder){
1440 Pair de = (Pair) properties [pi];
1442 return (MethodInfo) de.First;
1444 return pi.GetGetMethod ();
1448 /// Given an array of interface types, expand and eliminate repeated ocurrences
1449 /// of an interface.
1453 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1456 public static Type [] ExpandInterfaces (Type [] base_interfaces)
1458 ArrayList new_ifaces = new ArrayList ();
1460 foreach (Type iface in base_interfaces){
1461 if (!new_ifaces.Contains (iface))
1462 new_ifaces.Add (iface);
1464 Type [] implementing = TypeManager.GetInterfaces (iface);
1466 foreach (Type imp in implementing){
1467 if (!new_ifaces.Contains (imp))
1468 new_ifaces.Add (imp);
1471 Type [] ret = new Type [new_ifaces.Count];
1472 new_ifaces.CopyTo (ret, 0);
1477 /// This function returns the interfaces in the type 't'. Works with
1478 /// both types and TypeBuilders.
1480 public static Type [] GetInterfaces (Type t)
1483 // The reason for catching the Array case is that Reflection.Emit
1484 // will not return a TypeBuilder for Array types of TypeBuilder types,
1485 // but will still throw an exception if we try to call GetInterfaces
1488 // Since the array interfaces are always constant, we return those for
1493 t = TypeManager.array_type;
1495 if (t is TypeBuilder){
1496 Type [] parent_ifaces;
1498 if (t.BaseType == null)
1499 parent_ifaces = NoTypes;
1501 parent_ifaces = GetInterfaces (t.BaseType);
1502 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
1503 if (type_ifaces == null)
1504 type_ifaces = NoTypes;
1506 int parent_count = parent_ifaces.Length;
1507 Type [] result = new Type [parent_count + type_ifaces.Length];
1508 parent_ifaces.CopyTo (result, 0);
1509 type_ifaces.CopyTo (result, parent_count);
1513 return t.GetInterfaces ();
1517 /// The following is used to check if a given type implements an interface.
1518 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1520 public static bool ImplementsInterface (Type t, Type iface)
1525 // FIXME OPTIMIZATION:
1526 // as soon as we hit a non-TypeBuiler in the interface
1527 // chain, we could return, as the 'Type.GetInterfaces'
1528 // will return all the interfaces implement by the type
1532 interfaces = GetInterfaces (t);
1534 if (interfaces != null){
1535 foreach (Type i in interfaces){
1542 } while (t != null);
1547 // This is a custom version of Convert.ChangeType() which works
1548 // with the TypeBuilder defined types when compiling corlib.
1549 public static object ChangeType (object value, Type conversionType)
1551 if (!(value is IConvertible))
1552 throw new ArgumentException ();
1554 IConvertible convertValue = (IConvertible) value;
1555 CultureInfo ci = CultureInfo.CurrentCulture;
1556 NumberFormatInfo provider = ci.NumberFormat;
1559 // We must use Type.Equals() here since 'conversionType' is
1560 // the TypeBuilder created version of a system type and not
1561 // the system type itself. You cannot use Type.GetTypeCode()
1562 // on such a type - it'd always return TypeCode.Object.
1564 if (conversionType.Equals (typeof (Boolean)))
1565 return (object)(convertValue.ToBoolean (provider));
1566 else if (conversionType.Equals (typeof (Byte)))
1567 return (object)(convertValue.ToByte (provider));
1568 else if (conversionType.Equals (typeof (Char)))
1569 return (object)(convertValue.ToChar (provider));
1570 else if (conversionType.Equals (typeof (DateTime)))
1571 return (object)(convertValue.ToDateTime (provider));
1572 else if (conversionType.Equals (typeof (Decimal)))
1573 return (object)(convertValue.ToDecimal (provider));
1574 else if (conversionType.Equals (typeof (Double)))
1575 return (object)(convertValue.ToDouble (provider));
1576 else if (conversionType.Equals (typeof (Int16)))
1577 return (object)(convertValue.ToInt16 (provider));
1578 else if (conversionType.Equals (typeof (Int32)))
1579 return (object)(convertValue.ToInt32 (provider));
1580 else if (conversionType.Equals (typeof (Int64)))
1581 return (object)(convertValue.ToInt64 (provider));
1582 else if (conversionType.Equals (typeof (SByte)))
1583 return (object)(convertValue.ToSByte (provider));
1584 else if (conversionType.Equals (typeof (Single)))
1585 return (object)(convertValue.ToSingle (provider));
1586 else if (conversionType.Equals (typeof (String)))
1587 return (object)(convertValue.ToString (provider));
1588 else if (conversionType.Equals (typeof (UInt16)))
1589 return (object)(convertValue.ToUInt16 (provider));
1590 else if (conversionType.Equals (typeof (UInt32)))
1591 return (object)(convertValue.ToUInt32 (provider));
1592 else if (conversionType.Equals (typeof (UInt64)))
1593 return (object)(convertValue.ToUInt64 (provider));
1594 else if (conversionType.Equals (typeof (Object)))
1595 return (object)(value);
1597 throw new InvalidCastException ();
1601 // This is needed, because enumerations from assemblies
1602 // do not report their underlyingtype, but they report
1605 public static Type EnumToUnderlying (Type t)
1607 if (t == TypeManager.enum_type)
1610 t = t.UnderlyingSystemType;
1611 if (!TypeManager.IsEnumType (t))
1614 if (t is TypeBuilder) {
1615 // slow path needed to compile corlib
1616 if (t == TypeManager.bool_type ||
1617 t == TypeManager.byte_type ||
1618 t == TypeManager.sbyte_type ||
1619 t == TypeManager.char_type ||
1620 t == TypeManager.short_type ||
1621 t == TypeManager.ushort_type ||
1622 t == TypeManager.int32_type ||
1623 t == TypeManager.uint32_type ||
1624 t == TypeManager.int64_type ||
1625 t == TypeManager.uint64_type)
1627 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1629 TypeCode tc = Type.GetTypeCode (t);
1632 case TypeCode.Boolean:
1633 return TypeManager.bool_type;
1635 return TypeManager.byte_type;
1636 case TypeCode.SByte:
1637 return TypeManager.sbyte_type;
1639 return TypeManager.char_type;
1640 case TypeCode.Int16:
1641 return TypeManager.short_type;
1642 case TypeCode.UInt16:
1643 return TypeManager.ushort_type;
1644 case TypeCode.Int32:
1645 return TypeManager.int32_type;
1646 case TypeCode.UInt32:
1647 return TypeManager.uint32_type;
1648 case TypeCode.Int64:
1649 return TypeManager.int64_type;
1650 case TypeCode.UInt64:
1651 return TypeManager.uint64_type;
1653 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1657 // When compiling corlib and called with one of the core types, return
1658 // the corresponding typebuilder for that type.
1660 public static Type TypeToCoreType (Type t)
1662 if (RootContext.StdLib || (t is TypeBuilder))
1665 TypeCode tc = Type.GetTypeCode (t);
1668 case TypeCode.Boolean:
1669 return TypeManager.bool_type;
1671 return TypeManager.byte_type;
1672 case TypeCode.SByte:
1673 return TypeManager.sbyte_type;
1675 return TypeManager.char_type;
1676 case TypeCode.Int16:
1677 return TypeManager.short_type;
1678 case TypeCode.UInt16:
1679 return TypeManager.ushort_type;
1680 case TypeCode.Int32:
1681 return TypeManager.int32_type;
1682 case TypeCode.UInt32:
1683 return TypeManager.uint32_type;
1684 case TypeCode.Int64:
1685 return TypeManager.int64_type;
1686 case TypeCode.UInt64:
1687 return TypeManager.uint64_type;
1688 case TypeCode.String:
1689 return TypeManager.string_type;
1690 case TypeCode.DateTime:
1691 return TypeManager.date_type;
1693 if (t == typeof (void))
1694 return TypeManager.void_type;
1695 if (t == typeof (object))
1696 return TypeManager.object_type;
1697 if (t == typeof (System.Type))
1698 return TypeManager.type_type;
1704 /// Utility function that can be used to probe whether a type
1705 /// is managed or not.
1707 public static bool VerifyUnManaged (Type t, Location loc)
1709 if (t.IsValueType || t.IsPointer){
1711 // FIXME: this is more complex, we actually need to
1712 // make sure that the type does not contain any
1718 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
1719 // We need this explicit check here to make it work when
1720 // compiling corlib.
1725 "Cannot take the address or size of a variable of a managed type ('" +
1726 MonoBASIC_Name (t) + "')");
1731 /// Returns the name of the indexer in a given type.
1734 /// The default is not always 'Item'. The user can change this behaviour by
1735 /// using the DefaultMemberAttribute in the class.
1737 /// For example, the String class indexer is named 'Chars' not 'Item'
1739 public static string IndexerPropertyName (Type t)
1741 if (t is TypeBuilder) {
1742 if (t.IsInterface) {
1743 Interface i = LookupInterface (t);
1745 if ((i == null) || (i.IndexerName == null))
1748 return i.IndexerName;
1750 TypeContainer tc = LookupTypeContainer (t);
1752 if ((tc == null) || (tc.IndexerName == null))
1755 return tc.IndexerName;
1759 System.Attribute attr = System.Attribute.GetCustomAttribute (
1760 t, TypeManager.default_member_type);
1762 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
1763 return dma.MemberName;
1769 public static void MakePinned (LocalBuilder builder)
1772 // FIXME: Flag the "LocalBuilder" type as being
1773 // pinned. Figure out API.
1779 // Returns whether the array of memberinfos contains the given method
1781 static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
1783 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
1785 foreach (MethodBase method in array){
1786 if (method.Name != new_method.Name)
1789 Type [] old_args = TypeManager.GetArgumentTypes (method);
1790 int old_count = old_args.Length;
1793 if (new_args.Length != old_count)
1796 for (i = 0; i < old_count; i++){
1797 if (old_args [i] != new_args [i])
1809 // We copy methods from 'new_members' into 'target_list' if the signature
1810 // for the method from in the new list does not exist in the target_list
1812 // The name is assumed to be the same.
1814 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
1816 if (target_list == null){
1817 target_list = new ArrayList ();
1819 foreach (MemberInfo mi in new_members){
1820 if (mi is MethodBase)
1821 target_list.Add (mi);
1826 MemberInfo [] target_array = new MemberInfo [target_list.Count];
1827 target_list.CopyTo (target_array, 0);
1829 foreach (MemberInfo mi in new_members){
1830 MethodBase new_method = (MethodBase) mi;
1832 if (!ArrayContainsMethod (target_array, new_method))
1833 target_list.Add (new_method);
1839 public enum MethodFlags {
1841 IsObsoleteError = 2,
1846 // Returns the TypeManager.MethodFlags for this method.
1847 // This emits an error 619 / warning 618 if the method is obsolete.
1848 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
1850 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
1852 MethodFlags flags = 0;
1854 if (mb.DeclaringType is TypeBuilder){
1855 MethodData method = (MethodData) builder_to_method [mb];
1856 if (method == null) {
1857 // FIXME: implement Obsolete attribute on Property,
1858 // Indexer and Event.
1862 return method.GetMethodFlags (loc);
1865 object [] attrs = mb.GetCustomAttributes (true);
1866 foreach (object ta in attrs){
1867 if (!(ta is System.Attribute)){
1868 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
1871 System.Attribute a = (System.Attribute) ta;
1872 if (a.TypeId == TypeManager.obsolete_attribute_type){
1873 ObsoleteAttribute oa = (ObsoleteAttribute) a;
1875 string method_desc = TypeManager.MonoBASIC_Signature (mb);
1878 Report.Error (619, loc, "Method '" + method_desc +
1879 "' is obsolete: '" + oa.Message + "'");
1880 return MethodFlags.IsObsoleteError;
1882 Report.Warning (618, loc, "Method '" + method_desc +
1883 "' is obsolete: '" + oa.Message + "'");
1885 flags |= MethodFlags.IsObsolete;
1891 // Skip over conditional code.
1893 if (a.TypeId == TypeManager.conditional_attribute_type){
1894 ConditionalAttribute ca = (ConditionalAttribute) a;
1896 if (RootContext.AllDefines [ca.ConditionString] == null)
1897 flags |= MethodFlags.ShouldIgnore;
1904 #region MemberLookup implementation
1907 // Name of the member
1909 static string closure_name;
1912 // Whether we allow private members in the result (since FindMembers
1913 // uses NonPublic for both protected and private), we need to distinguish.
1915 static bool closure_private_ok;
1918 // Who is invoking us and which type is being queried currently.
1920 static Type closure_invocation_type;
1921 static Type closure_queried_type;
1922 static Type closure_start_type;
1925 // The assembly that defines the type is that is calling us
1927 static Assembly closure_invocation_assembly;
1930 // This filter filters by name + whether it is ok to include private
1931 // members in the search
1933 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
1936 // Hack: we know that the filter criteria will always be in the 'closure'
1940 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
1943 if ((closure_start_type == closure_invocation_type) &&
1944 (m.DeclaringType == closure_invocation_type))
1948 // Ugly: we need to find out the type of 'm', and depending
1949 // on this, tell whether we accept or not
1951 if (m is MethodBase){
1952 MethodBase mb = (MethodBase) m;
1953 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
1955 if (ma == MethodAttributes.Private)
1956 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
1959 // FamAndAssem requires that we not only derivate, but we are on the
1962 if (ma == MethodAttributes.FamANDAssem){
1963 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
1967 // Assembly and FamORAssem succeed if we're in the same assembly.
1968 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
1969 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
1973 // We already know that we aren't in the same assembly.
1974 if (ma == MethodAttributes.Assembly)
1977 // Family and FamANDAssem require that we derive.
1978 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
1979 if (closure_invocation_type == null)
1982 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
1992 if (m is FieldInfo){
1993 FieldInfo fi = (FieldInfo) m;
1994 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
1996 if (fa == FieldAttributes.Private)
1997 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
2000 // FamAndAssem requires that we not only derivate, but we are on the
2003 if (fa == FieldAttributes.FamANDAssem){
2004 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2008 // Assembly and FamORAssem succeed if we're in the same assembly.
2009 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2010 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2014 // We already know that we aren't in the same assembly.
2015 if (fa == FieldAttributes.Assembly)
2018 // Family and FamANDAssem require that we derive.
2019 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2020 if (closure_invocation_type == null)
2023 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2026 // Although a derived class can access protected members of its base class
2027 // it cannot do so through an instance of the base class (CS1540).
2028 if ((closure_invocation_type != closure_start_type) &&
2029 closure_invocation_type.IsSubclassOf (closure_start_type))
2040 // EventInfos and PropertyInfos, return true
2045 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2048 // Looks up a member called 'name' in the 'queried_type'. This lookup
2049 // is done by code that is contained in the definition for 'invocation_type'.
2051 // The binding flags are 'bf' and the kind of members being looked up are 'mt'
2053 // Returns an array of a single element for everything but Methods/Constructors
2054 // that might return multiple matches.
2056 public static MemberInfo [] MemberLookup (Type invocation_type, Type queried_type,
2057 MemberTypes mt, BindingFlags original_bf, string name)
2059 Timer.StartTimer (TimerType.MemberLookup);
2061 MemberInfo[] retval = RealMemberLookup (invocation_type, queried_type,
2062 mt, original_bf, name);
2064 Timer.StopTimer (TimerType.MemberLookup);
2069 static MemberInfo [] RealMemberLookup (Type invocation_type, Type queried_type,
2070 MemberTypes mt, BindingFlags original_bf, string name)
2072 BindingFlags bf = original_bf;
2074 ArrayList method_list = null;
2075 Type current_type = queried_type;
2076 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2078 bool always_ok_flag = false;
2079 bool skip_iface_check = true, used_cache = false;
2081 closure_name = name;
2082 closure_invocation_type = invocation_type;
2083 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2084 closure_start_type = queried_type;
2087 // If we are a nested class, we always have access to our container
2090 if (invocation_type != null){
2091 string invocation_name = invocation_type.FullName;
2092 if (invocation_name.IndexOf ('+') != -1){
2093 string container = queried_type.FullName + "+";
2094 int container_length = container.Length;
2096 if (invocation_name.Length > container_length){
2097 string shared = invocation_name.Substring (0, container_length);
2099 if (shared == container)
2100 always_ok_flag = true;
2109 // 'NonPublic' is lame, because it includes both protected and
2110 // private methods, so we need to control this behavior by
2111 // explicitly tracking if a private method is ok or not.
2113 // The possible cases are:
2114 // public, private and protected (internal does not come into the
2117 if (invocation_type != null){
2118 if (invocation_type == current_type){
2119 private_ok = (bf & BindingFlags.NonPublic) != 0;
2121 private_ok = always_ok_flag;
2123 if (invocation_type.IsSubclassOf (current_type))
2127 bf = original_bf | BindingFlags.NonPublic;
2130 bf = original_bf & ~BindingFlags.NonPublic;
2133 closure_private_ok = private_ok;
2134 closure_queried_type = current_type;
2136 Timer.StopTimer (TimerType.MemberLookup);
2137 bf |= BindingFlags.IgnoreCase;
2138 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2140 Timer.StartTimer (TimerType.MemberLookup);
2143 // When queried for an interface type, the cache will automatically check all
2144 // inherited members, so we don't need to do this here. However, this only
2145 // works if we already used the cache in the first iteration of this loop.
2147 // If we used the cache in any further iteration, we can still terminate the
2148 // loop since the cache always looks in all parent classes.
2154 skip_iface_check = false;
2156 if (current_type == TypeManager.object_type)
2159 current_type = current_type.BaseType;
2162 // This happens with interfaces, they have a null
2163 // basetype. Look members up in the Object class.
2165 if (current_type == null)
2166 current_type = TypeManager.object_type;
2169 if (list.Count == 0)
2173 // Events and types are returned by both 'static' and 'instance'
2174 // searches, which means that our above FindMembers will
2175 // return two copies of the same.
2177 if (list.Count == 1 && !(list [0] is MethodBase)){
2178 return (MemberInfo []) list;
2182 // Multiple properties: we query those just to find out the indexer
2185 if (list [0] is PropertyInfo)
2186 return (MemberInfo []) list;
2189 // We found methods, turn the search into "method scan"
2193 method_list = CopyNewMethods (method_list, list);
2194 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2195 } while (searching);
2197 if (method_list != null && method_list.Count > 0)
2198 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2201 // This happens if we already used the cache in the first iteration, in this case
2202 // the cache already looked in all interfaces.
2204 if (skip_iface_check)
2208 // Interfaces do not list members they inherit, so we have to
2211 if (!queried_type.IsInterface)
2214 if (queried_type.IsArray)
2215 queried_type = TypeManager.array_type;
2217 Type [] ifaces = GetInterfaces (queried_type);
2221 foreach (Type itype in ifaces){
2224 x = MemberLookup (null, itype, mt, bf, name);
2236 /// There is exactly one instance of this class per type.
2238 public sealed class TypeHandle : IMemberContainer {
2239 public readonly TypeHandle BaseType;
2241 readonly int id = ++next_id;
2242 static int next_id = 0;
2245 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2246 /// a TypeHandle yet, a new instance of it is created. This static method
2247 /// ensures that we'll only have one TypeHandle instance per type.
2249 public static TypeHandle GetTypeHandle (Type t)
2251 TypeHandle handle = (TypeHandle) type_hash [t];
2255 handle = new TypeHandle (t);
2256 type_hash.Add (t, handle);
2261 /// Returns the TypeHandle for TypeManager.object_type.
2263 public static IMemberContainer ObjectType {
2265 if (object_type != null)
2268 object_type = GetTypeHandle (TypeManager.object_type);
2275 /// Returns the TypeHandle for TypeManager.array_type.
2277 public static IMemberContainer ArrayType {
2279 if (array_type != null)
2282 array_type = GetTypeHandle (TypeManager.array_type);
2288 private static PtrHashtable type_hash = new PtrHashtable ();
2290 private static TypeHandle object_type = null;
2291 private static TypeHandle array_type = null;
2294 private bool is_interface;
2295 private MemberCache member_cache;
2297 private TypeHandle (Type type)
2300 if (type.BaseType != null)
2301 BaseType = GetTypeHandle (type.BaseType);
2302 else if ((type != TypeManager.object_type) && (type != typeof (object)))
2303 is_interface = true;
2304 this.member_cache = new MemberCache (this);
2307 // IMemberContainer methods
2309 public string Name {
2311 return type.FullName;
2321 public IMemberContainer Parent {
2327 public bool IsInterface {
2329 return is_interface;
2333 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2335 if (mt == MemberTypes.Event)
2336 return new MemberList (type.GetEvents (bf | BindingFlags.DeclaredOnly));
2338 return new MemberList (type.FindMembers (mt, bf | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
2342 // IMemberFinder methods
2344 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2345 MemberFilter filter, object criteria)
2347 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2350 public MemberCache MemberCache {
2352 return member_cache;
2356 public override string ToString ()
2358 if (BaseType != null)
2359 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2361 return "TypeHandle (" + id + "," + Name + ")";