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);
448 foreach(Type type in a.GetTypes()) {
449 if (type.IsPublic ) // && type. attributed as standard module
450 AddStandardModule(type);
455 /// Registers a module builder to lookup types from
457 public static void AddModule (ModuleBuilder mb)
459 int top = modules != null ? modules.Length : 0;
460 ModuleBuilder [] n = new ModuleBuilder [top + 1];
463 modules.CopyTo (n, 0);
469 private class StandardModule {
470 public readonly string Namespace;
471 public readonly string Name;
472 public StandardModule(string _namespace, string name) { Namespace = _namespace; Name = name; }
473 public override string ToString() { return ((Namespace != null && Namespace.Length > 0)?(Namespace + "."):"") + Name; }
476 private static StandardModule[] standardModules;
479 /// Registers a new 'standard module' to lookup short-qualified or unqualified members
481 internal static void AddStandardModule(Module module)
483 int top = standardModules != null ? standardModules.Length : 0;
484 StandardModule [] n = new StandardModule [top + 1];
486 if (standardModules != null)
487 standardModules.CopyTo (n, 0);
488 string name = module.Name;
489 int split = name.LastIndexOf('.');
491 name = name.Substring(split+1);
492 n [top] = new StandardModule(module.Namespace.Name, name);
493 //Console.WriteLine("Standard Module added:" + module.Name + " [" + n [top] + "]");
498 /// Registers a existing 'standard module' to lookup short-qualified or unqualified members
500 private static void AddStandardModule(Type type)
502 object[] attributes = type.GetCustomAttributes(false);
503 for (int i = 0; i < attributes.Length; i ++) {
504 if (attributes[i].ToString() == "Microsoft.VisualBasic.CompilerServices.StandardModuleAttribute") {
505 int top = standardModules != null ? standardModules.Length : 0;
506 StandardModule [] n = new StandardModule [top + 1];
508 if (standardModules != null)
509 standardModules.CopyTo (n, 0);
510 n [top] = new StandardModule(type.Namespace, type.Name) ;
521 public static Type[] GetPertinentStandardModules(string[] namespaces)
523 ArrayList list = new ArrayList();
524 foreach(string Namespace in namespaces)
526 for(int i = 0; i < standardModules.Length; i++)
527 if (standardModules[i].Namespace == Namespace) {
528 string name = standardModules[i].ToString();
529 Type t = LookupType(name);
531 System.Console.WriteLine("Could not find standard module '" + name + "'");
538 return (Type[])list.ToArray(typeof(Type));
542 // Low-level lookup, cache-less
544 static Type LookupTypeReflection (string name)
549 foreach (Assembly a in assemblies){
550 t = a.GetType (name, false, true);
555 foreach (ModuleBuilder mb in modules) {
556 t = mb.GetType (name, false, true);
561 } catch (Exception e) {
562 System.Console.WriteLine("\nERROR: " + e.ToString() + "WHILE EXECUTING LookupTypeReflection(\"" + name + "\")\n");
568 // This function is used when you want to avoid the lookups, and want to go
569 // directly to the source. This will use the cache.
571 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
572 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
573 // way to test things other than doing a fullname compare
575 public static Type LookupTypeDirect (string name)
577 Type t = (Type) types [name];
581 t = LookupTypeReflection (name);
590 /// Returns the Type associated with @name, takes care of the fact that
591 /// reflection expects nested types to be separated from the main type
592 /// with a "+" instead of a "."
594 public static Type LookupType (string name)
599 // First lookup in user defined and cached values
602 t = (Type) types [name];
607 // Optimization: ComposedCast will work with an existing type, and might already have the
608 // full name of the type, so the full system lookup can probably be avoided.
611 string [] elements = name.Split ('.');
612 int count = elements.Length;
614 for (int n = 1; n <= count; n++){
615 string top_level_type = String.Join (".", elements, 0, n);
617 t = (Type) types [top_level_type];
619 t = LookupTypeReflection (top_level_type);
629 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
630 t = LookupTypeDirect (newt);
639 // Returns a list of all namespaces in the assemblies and types loaded.
641 public static CaseInsensitiveHashtable GetNamespaces ()
643 CaseInsensitiveHashtable namespaces = new CaseInsensitiveHashtable ();
645 foreach (Assembly a in assemblies) {
646 foreach (Type t in a.GetTypes ()) {
647 string ns = t.Namespace;
649 if (namespaces.Contains (ns))
651 namespaces [ns] = ns;
655 foreach (ModuleBuilder mb in modules) {
656 foreach (Type t in mb.GetTypes ()) {
657 string ns = t.Namespace;
659 if (namespaces.Contains (ns))
661 namespaces [ns] = ns;
669 /// Returns the C# name of a type if possible, or the full type name otherwise
671 static public string MonoBASIC_Name (Type t)
673 return Regex.Replace (t.FullName,
675 @"(Int32|Int16|Int64|Single|Double|Char|Decimal|Byte|Object|Boolean|String|DateTime)" +
677 new MatchEvaluator (MonoBASIC_NameMatch));
680 static String MonoBASIC_NameMatch (Match match)
682 string s = match.Groups [1].Captures [0].Value;
684 Replace ("int32", "integer").
685 Replace ("int16", "short").
686 Replace ("int64", "long").
687 Replace ("datetime", "date")
688 + match.Groups [2].Captures [0].Value;
692 /// Returns the signature of the method
694 static public string MonoBASIC_Signature (MethodBase mb)
699 // FIXME: We should really have a single function to do
700 // everything instead of the following 5 line pattern
702 ParameterData iparams = LookupParametersByBuilder (mb);
704 if (iparams == null){
705 ParameterInfo [] pi = mb.GetParameters ();
706 iparams = new ReflectionParameters (pi);
709 for (int i = 0; i < iparams.Count; i++) {
713 sig += iparams.ParameterDesc(i);
717 return mb.DeclaringType.Name + "." + mb.Name + sig;
721 /// Looks up a type, and aborts if it is not found. This is used
722 /// by types required by the compiler
724 static Type CoreLookupType (string name)
726 Type t = LookupType (name);
729 Report.Error (518, "The predefined type '" + name + "' is not defined or imported");
730 Environment.Exit (0);
737 /// Returns the MethodInfo for a method named 'name' defined
738 /// in type 't' which takes arguments of types 'args'
740 static MethodInfo GetMethod (Type t, string name, Type [] args)
748 list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public| BindingFlags.IgnoreCase,
749 signature_filter, sig);
750 if (list.Count == 0) {
751 Report.Error (-19, "Can not find the core function '" + name + "'");
755 MethodInfo mi = list [0] as MethodInfo;
757 Report.Error (-19, "Can not find the core function '" + name + "'");
765 /// Returns the ConstructorInfo for "args"
767 public static ConstructorInfo GetConstructor (Type t, Type [] args)
775 list = FindMembers (t, MemberTypes.Constructor,
776 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
777 signature_filter, sig);
778 if (list.Count == 0){
779 Report.Error (-19, "Can not find the core constructor for type '" + t.Name + "'");
783 ConstructorInfo ci = list [0] as ConstructorInfo;
785 Report.Error (-19, "Can not find the core constructor for type '" + t.Name + "'");
792 public static void InitEnumUnderlyingTypes ()
795 int32_type = CoreLookupType ("System.Int32");
796 int64_type = CoreLookupType ("System.Int64");
797 uint32_type = CoreLookupType ("System.UInt32");
798 uint64_type = CoreLookupType ("System.UInt64");
799 byte_type = CoreLookupType ("System.Byte");
800 sbyte_type = CoreLookupType ("System.SByte");
801 short_type = CoreLookupType ("System.Int16");
802 ushort_type = CoreLookupType ("System.UInt16");
806 /// The types have to be initialized after the initial
807 /// population of the type has happened (for example, to
808 /// bootstrap the corlib.dll
810 public static void InitCoreTypes ()
812 object_type = CoreLookupType ("System.Object");
813 value_type = CoreLookupType ("System.ValueType");
815 InitEnumUnderlyingTypes ();
817 char_type = CoreLookupType ("System.Char");
818 string_type = CoreLookupType ("System.String");
819 float_type = CoreLookupType ("System.Single");
820 double_type = CoreLookupType ("System.Double");
821 char_ptr_type = CoreLookupType ("System.Char*");
822 decimal_type = CoreLookupType ("System.Decimal");
823 bool_type = CoreLookupType ("System.Boolean");
824 enum_type = CoreLookupType ("System.Enum");
826 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
827 delegate_type = CoreLookupType ("System.Delegate");
829 array_type = CoreLookupType ("System.Array");
830 void_type = CoreLookupType ("System.Void");
831 date_type = CoreLookupType ("System.DateTime");
832 type_type = CoreLookupType ("System.Type");
834 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
835 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
836 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
837 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
838 asynccallback_type = CoreLookupType ("System.AsyncCallback");
839 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
840 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
841 idisposable_type = CoreLookupType ("System.IDisposable");
842 icloneable_type = CoreLookupType ("System.ICloneable");
843 monitor_type = CoreLookupType ("System.Threading.Monitor");
844 intptr_type = CoreLookupType ("System.IntPtr");
846 attribute_type = CoreLookupType ("System.Attribute");
847 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
848 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
849 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
850 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
851 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
853 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
855 void_ptr_type = CoreLookupType ("System.Void*");
857 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
859 exception_type = CoreLookupType ("System.Exception");
864 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
865 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
868 // When compiling corlib, store the "real" types here.
870 if (!RootContext.StdLib) {
871 system_int32_type = typeof (System.Int32);
872 system_array_type = typeof (System.Array);
873 system_type_type = typeof (System.Type);
874 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
876 Type [] void_arg = { };
877 system_int_array_get_length = GetMethod (
878 system_array_type, "get_Length", void_arg);
879 system_int_array_get_rank = GetMethod (
880 system_array_type, "get_Rank", void_arg);
881 system_object_array_clone = GetMethod (
882 system_array_type, "Clone", void_arg);
884 Type [] system_int_arg = { system_int32_type };
885 system_int_array_get_length_int = GetMethod (
886 system_array_type, "GetLength", system_int_arg);
887 system_int_array_get_upper_bound_int = GetMethod (
888 system_array_type, "GetUpperBound", system_int_arg);
889 system_int_array_get_lower_bound_int = GetMethod (
890 system_array_type, "GetLowerBound", system_int_arg);
892 Type [] system_array_int_arg = { system_array_type, system_int32_type };
893 system_void_array_copyto_array_int = GetMethod (
894 system_array_type, "CopyTo", system_array_int_arg);
896 Type [] system_type_type_arg = { system_type_type, system_type_type, system_type_type };
899 system_void_set_corlib_type_builders = GetMethod (
900 system_assemblybuilder_type, "SetCorlibTypeBuilders",
901 system_type_type_arg);
903 object[] args = new object [3];
904 args [0] = object_type;
905 args [1] = value_type;
906 args [2] = enum_type;
908 system_void_set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
910 Console.WriteLine ("Corlib compilation is not supported in Microsoft.NET due to bugs in it");
916 // The helper methods that are used by the compiler
918 public static void InitCodeHelpers ()
921 // Now load the default methods that we use.
923 Type [] string_string = { string_type, string_type };
924 string_concat_string_string = GetMethod (
925 string_type, "Concat", string_string);
927 Type [] object_object = { object_type, object_type };
928 string_concat_object_object = GetMethod (
929 string_type, "Concat", object_object);
931 Type [] string_ = { string_type };
932 string_isinterneted_string = GetMethod (
933 string_type, "IsInterned", string_);
935 Type [] runtime_type_handle = { runtime_handle_type };
936 system_type_get_type_from_handle = GetMethod (
937 type_type, "GetTypeFromHandle", runtime_type_handle);
939 Type [] delegate_delegate = { delegate_type, delegate_type };
940 delegate_combine_delegate_delegate = GetMethod (
941 delegate_type, "Combine", delegate_delegate);
943 delegate_remove_delegate_delegate = GetMethod (
944 delegate_type, "Remove", delegate_delegate);
949 Type [] void_arg = { };
950 object_getcurrent_void = GetMethod (
951 ienumerator_type, "get_Current", void_arg);
952 bool_movenext_void = GetMethod (
953 ienumerator_type, "MoveNext", void_arg);
954 void_dispose_void = GetMethod (
955 idisposable_type, "Dispose", void_arg);
956 int_get_offset_to_string_data = GetMethod (
957 runtime_helpers_type, "get_OffsetToStringData", void_arg);
958 int_array_get_length = GetMethod (
959 array_type, "get_Length", void_arg);
960 int_array_get_rank = GetMethod (
961 array_type, "get_Rank", void_arg);
966 Type [] int_arg = { int32_type };
967 int_array_get_length_int = GetMethod (
968 array_type, "GetLength", int_arg);
969 int_array_get_upper_bound_int = GetMethod (
970 array_type, "GetUpperBound", int_arg);
971 int_array_get_lower_bound_int = GetMethod (
972 array_type, "GetLowerBound", int_arg);
975 // System.Array methods
977 object_array_clone = GetMethod (
978 array_type, "Clone", void_arg);
979 Type [] array_int_arg = { array_type, int32_type };
980 void_array_copyto_array_int = GetMethod (
981 array_type, "CopyTo", array_int_arg);
986 Type [] object_arg = { object_type };
987 void_monitor_enter_object = GetMethod (
988 monitor_type, "Enter", object_arg);
989 void_monitor_exit_object = GetMethod (
990 monitor_type, "Exit", object_arg);
992 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
994 void_initializearray_array_fieldhandle = GetMethod (
995 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1000 int_getlength_int = GetMethod (
1001 array_type, "GetLength", int_arg);
1004 // Decimal constructors
1006 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1007 void_decimal_ctor_five_args = GetConstructor (
1008 decimal_type, dec_arg);
1010 // DateTime constructor
1011 Type [] ticks_arg = { int64_type };
1012 void_datetime_ctor_ticks_arg = GetConstructor ( date_type, ticks_arg);
1017 cons_param_array_attribute = GetConstructor (
1018 param_array_type, void_arg);
1020 unverifiable_code_ctor = GetConstructor (
1021 unverifiable_code_type, void_arg);
1025 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1027 static CaseInsensitiveHashtable type_hash = new CaseInsensitiveHashtable ();
1030 /// This is the "old", non-cache based FindMembers() function. We cannot use
1031 /// the cache here because there is no member name argument.
1033 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1034 MemberFilter filter, object criteria)
1036 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1037 bf |= BindingFlags.IgnoreCase;
1039 // 'builder_to_declspace' contains all dynamic types.
1043 Timer.StartTimer (TimerType.FindMembers);
1044 list = decl.FindMembers (mt, bf, filter, criteria);
1045 Timer.StopTimer (TimerType.FindMembers);
1050 // We have to take care of arrays specially, because GetType on
1051 // a TypeBuilder array will return a Type, not a TypeBuilder,
1052 // and we can not call FindMembers on this type.
1054 if (t.IsSubclassOf (TypeManager.array_type))
1055 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1058 // Since FindMembers will not lookup both static and instance
1059 // members, we emulate this behaviour here.
1061 if ((bf & instance_and_static) == instance_and_static){
1062 MemberInfo [] i_members = t.FindMembers (
1063 mt, (bf & ~BindingFlags.Static) | BindingFlags.IgnoreCase, filter, criteria);
1065 int i_len = i_members.Length;
1067 MemberInfo one = i_members [0];
1070 // If any of these are present, we are done!
1072 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1073 return new MemberList (i_members);
1076 MemberInfo [] s_members = t.FindMembers (
1077 mt, (bf & ~BindingFlags.Instance) | BindingFlags.IgnoreCase, filter, criteria);
1079 int s_len = s_members.Length;
1080 if (i_len > 0 || s_len > 0)
1081 return new MemberList (i_members, s_members);
1084 return new MemberList (i_members);
1086 return new MemberList (s_members);
1090 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1095 /// This method is only called from within MemberLookup. It tries to use the member
1096 /// cache if possible and falls back to the normal FindMembers if not. The 'used_cache'
1097 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1098 /// our return value will already contain all inherited members and the caller don't need
1099 /// to check base classes and interfaces anymore.
1101 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1102 string name, out bool used_cache)
1105 // We have to take care of arrays specially, because GetType on
1106 // a TypeBuilder array will return a Type, not a TypeBuilder,
1107 // and we can not call FindMembers on this type.
1109 if (t.IsSubclassOf (TypeManager.array_type)) {
1111 return TypeHandle.ArrayType.MemberCache.FindMembers (
1112 mt, bf, name, FilterWithClosure_delegate, null);
1116 // If this is a dynamic type, it's always in the 'builder_to_declspace' hash table
1117 // and we can ask the DeclSpace for the MemberCache.
1119 if (t is TypeBuilder) {
1120 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1121 MemberCache cache = decl.MemberCache;
1124 // If this DeclSpace has a MemberCache, use it.
1127 if (cache != null) {
1129 return cache.FindMembers (
1130 mt, bf, name, FilterWithClosure_delegate, null);
1133 // If there is no MemberCache, we need to use the "normal" FindMembers.
1136 Timer.StartTimer (TimerType.FindMembers);
1137 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
1138 FilterWithClosure_delegate, name);
1139 Timer.StopTimer (TimerType.FindMembers);
1145 // This call will always succeed. There is exactly one TypeHandle instance per
1146 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1147 // if it didn't already exist.
1149 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1152 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1155 public static bool IsBuiltinType (Type t)
1157 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1158 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1159 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1160 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type ||
1167 public static bool IsDelegateType (Type t)
1169 if (t.IsSubclassOf (TypeManager.delegate_type))
1175 public static bool IsEnumType (Type t)
1177 if (t.IsSubclassOf (TypeManager.enum_type))
1184 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1186 public static bool IsUnmanagedType (Type t)
1188 if (IsBuiltinType (t) && t != TypeManager.string_type)
1197 if (IsValueType (t)){
1198 if (t is TypeBuilder){
1199 TypeContainer tc = LookupTypeContainer (t);
1201 foreach (Field f in tc.Fields){
1202 if (f.FieldBuilder.IsStatic)
1204 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1208 FieldInfo [] fields = t.GetFields ();
1210 foreach (FieldInfo f in fields){
1213 if (!IsUnmanagedType (f.FieldType))
1223 public static bool IsValueType (Type t)
1225 if (t.IsSubclassOf (TypeManager.value_type))
1231 public static bool IsInterfaceType (Type t)
1233 Interface iface = builder_to_declspace [t] as Interface;
1242 // Checks whether 'type' is a subclass or nested child of 'parent'.
1244 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1247 if ((type == parent) || type.IsSubclassOf (parent))
1250 // Handle nested types.
1251 type = type.DeclaringType;
1252 } while (type != null);
1258 // Checks whether 'type' is a nested child of 'parent'.
1260 public static bool IsNestedChildOf (Type type, Type parent)
1262 if ((type == parent) || type.IsSubclassOf (parent))
1265 return IsSubclassOrNestedChildOf (type, parent);
1269 /// Returns the User Defined Types
1271 public static ArrayList UserTypes {
1277 public static CaseInsensitiveHashtable TypeContainers {
1279 return typecontainers;
1283 static Hashtable builder_to_constant;
1285 public static void RegisterConstant (FieldBuilder fb, Const c)
1287 if (builder_to_constant == null)
1288 builder_to_constant = new PtrHashtable ();
1290 if (builder_to_constant.Contains (fb))
1293 builder_to_constant.Add (fb, c);
1296 public static Const LookupConstant (FieldBuilder fb)
1298 if (builder_to_constant == null)
1301 return (Const) builder_to_constant [fb];
1305 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1309 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1310 /// for anything which is dynamic, and we need this in a number of places,
1311 /// we register this information here, and use it afterwards.
1313 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1318 method_arguments.Add (mb, args);
1319 method_internal_params.Add (mb, ip);
1324 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1326 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1329 if (method_internal_params.Contains (mb))
1330 return (InternalParameters) method_internal_params [mb];
1332 throw new Exception ("Argument for Method not registered" + mb);
1336 /// Returns the argument types for a method based on its methodbase
1338 /// For dynamic methods, we use the compiler provided types, for
1339 /// methods from existing assemblies we load them from GetParameters,
1340 /// and insert them into the cache
1342 static public Type [] GetArgumentTypes (MethodBase mb)
1344 if (method_arguments.Contains (mb))
1345 return (Type []) method_arguments [mb];
1347 ParameterInfo [] pi = mb.GetParameters ();
1349 Type [] types = new Type [c];
1351 for (int i = 0; i < c; i++)
1352 types [i] = pi [i].ParameterType;
1354 method_arguments.Add (mb, types);
1360 /// Returns the argument types for an indexer based on its PropertyInfo
1362 /// For dynamic indexers, we use the compiler provided types, for
1363 /// indexers from existing assemblies we load them from GetParameters,
1364 /// and insert them into the cache
1366 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1368 if (indexer_arguments.Contains (indexer))
1369 return (Type []) indexer_arguments [indexer];
1370 else if (indexer is PropertyBuilder)
1371 // If we're a PropertyBuilder and not in the
1372 // 'indexer_arguments' hash, then we're a property and
1376 ParameterInfo [] pi = indexer.GetIndexParameters ();
1377 // Property, not an indexer.
1381 Type [] types = new Type [c];
1383 for (int i = 0; i < c; i++)
1384 types [i] = pi [i].ParameterType;
1386 indexer_arguments.Add (indexer, types);
1392 // This is a workaround the fact that GetValue is not
1393 // supported for dynamic types
1395 static CaseInsensitiveHashtable fields = new CaseInsensitiveHashtable ();
1396 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1398 if (fields.Contains (fb))
1401 fields.Add (fb, value);
1406 static public object GetValue (FieldBuilder fb)
1411 static CaseInsensitiveHashtable fieldbuilders_to_fields = new CaseInsensitiveHashtable ();
1412 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1414 if (fieldbuilders_to_fields.Contains (fb))
1417 fieldbuilders_to_fields.Add (fb, f);
1421 static public FieldBase GetField (FieldInfo fb)
1423 return (FieldBase) fieldbuilders_to_fields [fb];
1426 static CaseInsensitiveHashtable events;
1428 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1431 events = new CaseInsensitiveHashtable ();
1433 if (events.Contains (eb))
1436 events.Add (eb, new Pair (add, remove));
1441 static public MethodInfo GetAddMethod (EventInfo ei)
1443 if (ei is MyEventBuilder) {
1444 Pair pair = (Pair) events [ei];
1446 return (MethodInfo) pair.First;
1448 return ei.GetAddMethod ();
1451 static public MethodInfo GetRemoveMethod (EventInfo ei)
1453 if (ei is MyEventBuilder) {
1454 Pair pair = (Pair) events [ei];
1456 return (MethodInfo) pair.Second;
1458 return ei.GetAddMethod ();
1461 static CaseInsensitiveHashtable priv_fields_events;
1463 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1465 if (priv_fields_events == null)
1466 priv_fields_events = new CaseInsensitiveHashtable ();
1468 if (priv_fields_events.Contains (einfo))
1471 priv_fields_events.Add (einfo, builder);
1476 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1478 return (MemberInfo) priv_fields_events [ei];
1481 static CaseInsensitiveHashtable properties;
1483 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1485 if (properties == null)
1486 properties = new CaseInsensitiveHashtable ();
1488 if (properties.Contains (pb))
1491 properties.Add (pb, new Pair (get, set));
1496 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get, MethodBase set, Type[] args)
1498 if (!RegisterProperty (pb, get,set))
1501 indexer_arguments.Add (pb, args);
1506 static public MethodInfo GetPropertyGetter (PropertyInfo pi)
1508 if (pi is PropertyBuilder){
1509 Pair de = (Pair) properties [pi];
1511 return (MethodInfo) de.Second;
1513 return pi.GetSetMethod (true);
1516 static public MethodInfo GetPropertySetter (PropertyInfo pi)
1518 if (pi is PropertyBuilder){
1519 Pair de = (Pair) properties [pi];
1521 return (MethodInfo) de.First;
1523 return pi.GetGetMethod (true);
1527 /// Given an array of interface types, expand and eliminate repeated ocurrences
1528 /// of an interface.
1532 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1535 public static Type [] ExpandInterfaces (Type [] base_interfaces)
1537 ArrayList new_ifaces = new ArrayList ();
1539 foreach (Type iface in base_interfaces){
1540 if (!new_ifaces.Contains (iface))
1541 new_ifaces.Add (iface);
1543 Type [] implementing = TypeManager.GetInterfaces (iface);
1545 foreach (Type imp in implementing){
1546 if (!new_ifaces.Contains (imp))
1547 new_ifaces.Add (imp);
1550 Type [] ret = new Type [new_ifaces.Count];
1551 new_ifaces.CopyTo (ret, 0);
1556 /// This function returns the interfaces in the type 't'. Works with
1557 /// both types and TypeBuilders.
1559 public static Type [] GetInterfaces (Type t)
1562 // The reason for catching the Array case is that Reflection.Emit
1563 // will not return a TypeBuilder for Array types of TypeBuilder types,
1564 // but will still throw an exception if we try to call GetInterfaces
1567 // Since the array interfaces are always constant, we return those for
1572 t = TypeManager.array_type;
1574 if (t is TypeBuilder){
1575 Type [] parent_ifaces;
1577 if (t.BaseType == null)
1578 parent_ifaces = NoTypes;
1580 parent_ifaces = GetInterfaces (t.BaseType);
1581 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
1582 if (type_ifaces == null)
1583 type_ifaces = NoTypes;
1585 int parent_count = parent_ifaces.Length;
1586 Type [] result = new Type [parent_count + type_ifaces.Length];
1587 parent_ifaces.CopyTo (result, 0);
1588 type_ifaces.CopyTo (result, parent_count);
1592 return t.GetInterfaces ();
1596 /// The following is used to check if a given type implements an interface.
1597 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1599 public static bool ImplementsInterface (Type t, Type iface)
1604 // FIXME OPTIMIZATION:
1605 // as soon as we hit a non-TypeBuiler in the interface
1606 // chain, we could return, as the 'Type.GetInterfaces'
1607 // will return all the interfaces implement by the type
1611 interfaces = GetInterfaces (t);
1613 if (interfaces != null){
1614 foreach (Type i in interfaces){
1621 } while (t != null);
1626 // This is a custom version of Convert.ChangeType() which works
1627 // with the TypeBuilder defined types when compiling corlib.
1628 public static object ChangeType (object value, Type conversionType)
1630 if (!(value is IConvertible))
1631 throw new ArgumentException ();
1633 IConvertible convertValue = (IConvertible) value;
1634 CultureInfo ci = CultureInfo.CurrentCulture;
1635 NumberFormatInfo provider = ci.NumberFormat;
1638 // We must use Type.Equals() here since 'conversionType' is
1639 // the TypeBuilder created version of a system type and not
1640 // the system type itself. You cannot use Type.GetTypeCode()
1641 // on such a type - it'd always return TypeCode.Object.
1643 if (conversionType.Equals (typeof (Boolean)))
1644 return (object)(convertValue.ToBoolean (provider));
1645 else if (conversionType.Equals (typeof (Byte)))
1646 return (object)(convertValue.ToByte (provider));
1647 else if (conversionType.Equals (typeof (Char)))
1648 return (object)(convertValue.ToChar (provider));
1649 else if (conversionType.Equals (typeof (DateTime)))
1650 return (object)(convertValue.ToDateTime (provider));
1651 else if (conversionType.Equals (typeof (Decimal)))
1652 return (object)(convertValue.ToDecimal (provider));
1653 else if (conversionType.Equals (typeof (Double)))
1654 return (object)(convertValue.ToDouble (provider));
1655 else if (conversionType.Equals (typeof (Int16)))
1656 return (object)(convertValue.ToInt16 (provider));
1657 else if (conversionType.Equals (typeof (Int32)))
1658 return (object)(convertValue.ToInt32 (provider));
1659 else if (conversionType.Equals (typeof (Int64)))
1660 return (object)(convertValue.ToInt64 (provider));
1661 else if (conversionType.Equals (typeof (SByte)))
1662 return (object)(convertValue.ToSByte (provider));
1663 else if (conversionType.Equals (typeof (Single)))
1664 return (object)(convertValue.ToSingle (provider));
1665 else if (conversionType.Equals (typeof (String)))
1666 return (object)(convertValue.ToString (provider));
1667 else if (conversionType.Equals (typeof (UInt16)))
1668 return (object)(convertValue.ToUInt16 (provider));
1669 else if (conversionType.Equals (typeof (UInt32)))
1670 return (object)(convertValue.ToUInt32 (provider));
1671 else if (conversionType.Equals (typeof (UInt64)))
1672 return (object)(convertValue.ToUInt64 (provider));
1673 else if (conversionType.Equals (typeof (Object)))
1674 return (object)(value);
1676 throw new InvalidCastException ();
1680 // This is needed, because enumerations from assemblies
1681 // do not report their underlyingtype, but they report
1684 public static Type EnumToUnderlying (Type t)
1686 if (t == TypeManager.enum_type)
1689 t = t.UnderlyingSystemType;
1690 if (!TypeManager.IsEnumType (t))
1693 if (t is TypeBuilder) {
1694 // slow path needed to compile corlib
1695 if (t == TypeManager.bool_type ||
1696 t == TypeManager.byte_type ||
1697 t == TypeManager.sbyte_type ||
1698 t == TypeManager.char_type ||
1699 t == TypeManager.short_type ||
1700 t == TypeManager.ushort_type ||
1701 t == TypeManager.int32_type ||
1702 t == TypeManager.uint32_type ||
1703 t == TypeManager.int64_type ||
1704 t == TypeManager.uint64_type)
1706 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1708 TypeCode tc = Type.GetTypeCode (t);
1711 case TypeCode.Boolean:
1712 return TypeManager.bool_type;
1714 return TypeManager.byte_type;
1715 case TypeCode.SByte:
1716 return TypeManager.sbyte_type;
1718 return TypeManager.char_type;
1719 case TypeCode.Int16:
1720 return TypeManager.short_type;
1721 case TypeCode.UInt16:
1722 return TypeManager.ushort_type;
1723 case TypeCode.Int32:
1724 return TypeManager.int32_type;
1725 case TypeCode.UInt32:
1726 return TypeManager.uint32_type;
1727 case TypeCode.Int64:
1728 return TypeManager.int64_type;
1729 case TypeCode.UInt64:
1730 return TypeManager.uint64_type;
1732 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1736 // When compiling corlib and called with one of the core types, return
1737 // the corresponding typebuilder for that type.
1739 public static Type TypeToCoreType (Type t)
1741 if (RootContext.StdLib || (t is TypeBuilder))
1744 TypeCode tc = Type.GetTypeCode (t);
1747 case TypeCode.Boolean:
1748 return TypeManager.bool_type;
1750 return TypeManager.byte_type;
1751 case TypeCode.SByte:
1752 return TypeManager.sbyte_type;
1754 return TypeManager.char_type;
1755 case TypeCode.Int16:
1756 return TypeManager.short_type;
1757 case TypeCode.UInt16:
1758 return TypeManager.ushort_type;
1759 case TypeCode.Int32:
1760 return TypeManager.int32_type;
1761 case TypeCode.UInt32:
1762 return TypeManager.uint32_type;
1763 case TypeCode.Int64:
1764 return TypeManager.int64_type;
1765 case TypeCode.UInt64:
1766 return TypeManager.uint64_type;
1767 case TypeCode.String:
1768 return TypeManager.string_type;
1769 case TypeCode.DateTime:
1770 return TypeManager.date_type;
1772 if (t == typeof (void))
1773 return TypeManager.void_type;
1774 if (t == typeof (object))
1775 return TypeManager.object_type;
1776 if (t == typeof (System.Type))
1777 return TypeManager.type_type;
1783 /// Utility function that can be used to probe whether a type
1784 /// is managed or not.
1786 public static bool VerifyUnManaged (Type t, Location loc)
1788 if (t.IsValueType || t.IsPointer){
1790 // FIXME: this is more complex, we actually need to
1791 // make sure that the type does not contain any
1797 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
1798 // We need this explicit check here to make it work when
1799 // compiling corlib.
1804 "Cannot take the address or size of a variable of a managed type ('" +
1805 MonoBASIC_Name (t) + "')");
1810 /// Returns the name of the indexer in a given type.
1813 /// The default is not always 'Item'. The user can change this behaviour by
1814 /// using the DefaultMemberAttribute in the class.
1816 /// For example, the String class indexer is named 'Chars' not 'Item'
1818 public static string IndexerPropertyName (Type t)
1820 if (t is TypeBuilder) {
1821 if (t.IsInterface) {
1822 Interface i = LookupInterface (t);
1824 if ((i == null) || (i.IndexerName == null))
1827 return i.IndexerName;
1829 TypeContainer tc = LookupTypeContainer (t);
1831 if ((tc == null) || (tc.IndexerName == null))
1834 return tc.IndexerName;
1838 System.Attribute attr = System.Attribute.GetCustomAttribute (
1839 t, TypeManager.default_member_type);
1841 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
1842 return dma.MemberName;
1848 public static void MakePinned (LocalBuilder builder)
1851 // FIXME: Flag the "LocalBuilder" type as being
1852 // pinned. Figure out API.
1858 // Returns whether the array of memberinfos contains the given method
1860 static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
1862 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
1864 foreach (MethodBase method in array){
1865 if (method.Name != new_method.Name)
1868 Type [] old_args = TypeManager.GetArgumentTypes (method);
1869 int old_count = old_args.Length;
1872 if (new_args.Length != old_count)
1875 for (i = 0; i < old_count; i++){
1876 if (old_args [i] != new_args [i])
1888 // We copy methods from 'new_members' into 'target_list' if the signature
1889 // for the method from in the new list does not exist in the target_list
1891 // The name is assumed to be the same.
1893 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
1895 if (target_list == null){
1896 target_list = new ArrayList ();
1898 foreach (MemberInfo mi in new_members){
1899 if (mi is MethodBase)
1900 target_list.Add (mi);
1905 MemberInfo [] target_array = new MemberInfo [target_list.Count];
1906 target_list.CopyTo (target_array, 0);
1908 foreach (MemberInfo mi in new_members){
1909 MethodBase new_method = (MethodBase) mi;
1911 if (!ArrayContainsMethod (target_array, new_method))
1912 target_list.Add (new_method);
1918 public enum MethodFlags {
1920 IsObsoleteError = 2,
1925 // Returns the TypeManager.MethodFlags for this method.
1926 // This emits an error 619 / warning 618 if the method is obsolete.
1927 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
1929 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
1931 MethodFlags flags = 0;
1933 if (mb.DeclaringType is TypeBuilder){
1934 MethodData method = (MethodData) builder_to_method [mb];
1935 if (method == null) {
1936 // FIXME: implement Obsolete attribute on Property,
1937 // Indexer and Event.
1941 return method.GetMethodFlags (loc);
1944 object [] attrs = mb.GetCustomAttributes (true);
1945 foreach (object ta in attrs){
1946 if (!(ta is System.Attribute)){
1947 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
1950 System.Attribute a = (System.Attribute) ta;
1951 if (a.TypeId == TypeManager.obsolete_attribute_type){
1952 ObsoleteAttribute oa = (ObsoleteAttribute) a;
1954 string method_desc = TypeManager.MonoBASIC_Signature (mb);
1957 Report.Error (619, loc, "Method '" + method_desc +
1958 "' is obsolete: '" + oa.Message + "'");
1959 return MethodFlags.IsObsoleteError;
1961 Report.Warning (618, loc, "Method '" + method_desc +
1962 "' is obsolete: '" + oa.Message + "'");
1964 flags |= MethodFlags.IsObsolete;
1970 // Skip over conditional code.
1972 if (a.TypeId == TypeManager.conditional_attribute_type){
1973 ConditionalAttribute ca = (ConditionalAttribute) a;
1975 if (RootContext.AllDefines [ca.ConditionString] == null)
1976 flags |= MethodFlags.ShouldIgnore;
1983 #region MemberLookup implementation
1986 // Name of the member
1988 static string closure_name;
1991 // Whether we allow private members in the result (since FindMembers
1992 // uses NonPublic for both protected and private), we need to distinguish.
1994 static bool closure_private_ok;
1997 // Who is invoking us and which type is being queried currently.
1999 static Type closure_invocation_type;
2000 static Type closure_queried_type;
2001 static Type closure_start_type;
2004 // The assembly that defines the type is that is calling us
2006 static Assembly closure_invocation_assembly;
2009 // This filter filters by name + whether it is ok to include private
2010 // members in the search
2012 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
2015 // Hack: we know that the filter criteria will always be in the 'closure'
2019 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2022 if ((closure_start_type == closure_invocation_type) &&
2023 (m.DeclaringType == closure_invocation_type))
2027 // Ugly: we need to find out the type of 'm', and depending
2028 // on this, tell whether we accept or not
2030 if (m is MethodBase){
2031 MethodBase mb = (MethodBase) m;
2032 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2034 if (ma == MethodAttributes.Private)
2035 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
2038 // FamAndAssem requires that we not only derivate, but we are on the
2041 if (ma == MethodAttributes.FamANDAssem){
2042 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
2046 // Assembly and FamORAssem succeed if we're in the same assembly.
2047 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2048 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
2052 // We already know that we aren't in the same assembly.
2053 if (ma == MethodAttributes.Assembly)
2056 // Family and FamANDAssem require that we derive.
2057 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2058 if (closure_invocation_type == null)
2061 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2071 if (m is FieldInfo){
2072 FieldInfo fi = (FieldInfo) m;
2073 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2075 if (fa == FieldAttributes.Private)
2076 return closure_private_ok || (closure_invocation_type == m.DeclaringType);
2079 // FamAndAssem requires that we not only derivate, but we are on the
2082 if (fa == FieldAttributes.FamANDAssem){
2083 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2087 // Assembly and FamORAssem succeed if we're in the same assembly.
2088 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2089 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2093 // We already know that we aren't in the same assembly.
2094 if (fa == FieldAttributes.Assembly)
2097 // Family and FamANDAssem require that we derive.
2098 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2099 if (closure_invocation_type == null)
2102 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2105 // Although a derived class can access protected members of its base class
2106 // it cannot do so through an instance of the base class (CS1540).
2107 if ((closure_invocation_type != closure_start_type) &&
2108 closure_invocation_type.IsSubclassOf (closure_start_type))
2119 // EventInfos and PropertyInfos, return true
2124 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2127 // Looks up a member called 'name' in the 'queried_type'. This lookup
2128 // is done by code that is contained in the definition for 'invocation_type'.
2130 // The binding flags are 'bf' and the kind of members being looked up are 'mt'
2132 // Returns an array of a single element for everything but Methods/Constructors
2133 // that might return multiple matches.
2135 public static MemberInfo [] MemberLookup (Type invocation_type, Type queried_type,
2136 MemberTypes mt, BindingFlags original_bf, string name)
2138 Timer.StartTimer (TimerType.MemberLookup);
2140 MemberInfo[] retval = RealMemberLookup (invocation_type, queried_type,
2141 mt, original_bf, name);
2143 Timer.StopTimer (TimerType.MemberLookup);
2148 static MemberInfo [] RealMemberLookup (Type invocation_type, Type queried_type,
2149 MemberTypes mt, BindingFlags original_bf, string name)
2151 BindingFlags bf = original_bf;
2153 ArrayList method_list = null;
2154 Type current_type = queried_type;
2155 if (queried_type == null)
2156 throw new ArgumentNullException("queried_type");
2157 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2159 bool always_ok_flag = false;
2160 bool skip_iface_check = true, used_cache = false;
2162 closure_name = name;
2163 closure_invocation_type = invocation_type;
2164 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2165 closure_start_type = queried_type;
2168 // If we are a nested class, we always have access to our container
2171 if (invocation_type != null){
2172 string invocation_name = invocation_type.FullName;
2173 if (invocation_name.IndexOf ('+') != -1){
2174 string container = queried_type.FullName + "+";
2175 int container_length = container.Length;
2177 if (invocation_name.Length > container_length){
2178 string shared = invocation_name.Substring (0, container_length);
2180 if (shared == container)
2181 always_ok_flag = true;
2190 // 'NonPublic' is lame, because it includes both protected and
2191 // private methods, so we need to control this behavior by
2192 // explicitly tracking if a private method is ok or not.
2194 // The possible cases are:
2195 // public, private and protected (internal does not come into the
2198 if (invocation_type != null){
2199 if (invocation_type == current_type){
2200 private_ok = (bf & BindingFlags.NonPublic) != 0;
2202 private_ok = always_ok_flag;
2204 if (invocation_type.IsSubclassOf (current_type))
2208 bf = original_bf | BindingFlags.NonPublic;
2211 bf = original_bf & ~BindingFlags.NonPublic;
2214 closure_private_ok = private_ok;
2215 closure_queried_type = current_type;
2217 Timer.StopTimer (TimerType.MemberLookup);
2218 bf |= BindingFlags.IgnoreCase;
2219 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2221 Timer.StartTimer (TimerType.MemberLookup);
2224 // When queried for an interface type, the cache will automatically check all
2225 // inherited members, so we don't need to do this here. However, this only
2226 // works if we already used the cache in the first iteration of this loop.
2228 // If we used the cache in any further iteration, we can still terminate the
2229 // loop since the cache always looks in all parent classes.
2235 skip_iface_check = false;
2237 if (current_type == TypeManager.object_type)
2240 current_type = current_type.BaseType;
2243 // This happens with interfaces, they have a null
2244 // basetype. Look members up in the Object class.
2246 if (current_type == null)
2247 current_type = TypeManager.object_type;
2250 if (list.Count == 0)
2254 // Events and types are returned by both 'static' and 'instance'
2255 // searches, which means that our above FindMembers will
2256 // return two copies of the same.
2258 if (list.Count == 1 && !(list [0] is MethodBase)){
2259 return (MemberInfo []) list;
2263 // Multiple properties: we query those just to find out the indexer
2266 if (list [0] is PropertyInfo)
2267 return (MemberInfo []) list;
2270 // We found methods, turn the search into "method scan"
2274 method_list = CopyNewMethods (method_list, list);
2275 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2276 } while (searching);
2278 if (method_list != null && method_list.Count > 0)
2279 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2282 // This happens if we already used the cache in the first iteration, in this case
2283 // the cache already looked in all interfaces.
2285 if (skip_iface_check)
2289 // Interfaces do not list members they inherit, so we have to
2292 if (!queried_type.IsInterface)
2295 if (queried_type.IsArray)
2296 queried_type = TypeManager.array_type;
2298 Type [] ifaces = GetInterfaces (queried_type);
2302 foreach (Type itype in ifaces){
2305 x = MemberLookup (null, itype, mt, bf, name);
2317 /// There is exactly one instance of this class per type.
2319 public sealed class TypeHandle : IMemberContainer {
2320 public readonly TypeHandle BaseType;
2322 readonly int id = ++next_id;
2323 static int next_id = 0;
2326 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2327 /// a TypeHandle yet, a new instance of it is created. This static method
2328 /// ensures that we'll only have one TypeHandle instance per type.
2330 public static TypeHandle GetTypeHandle (Type t)
2332 TypeHandle handle = (TypeHandle) type_hash [t];
2336 handle = new TypeHandle (t);
2337 type_hash.Add (t, handle);
2342 /// Returns the TypeHandle for TypeManager.object_type.
2344 public static IMemberContainer ObjectType {
2346 if (object_type != null)
2349 object_type = GetTypeHandle (TypeManager.object_type);
2356 /// Returns the TypeHandle for TypeManager.array_type.
2358 public static IMemberContainer ArrayType {
2360 if (array_type != null)
2363 array_type = GetTypeHandle (TypeManager.array_type);
2369 private static PtrHashtable type_hash = new PtrHashtable ();
2371 private static TypeHandle object_type = null;
2372 private static TypeHandle array_type = null;
2375 private bool is_interface;
2376 private MemberCache member_cache;
2378 private TypeHandle (Type type)
2381 if (type.BaseType != null)
2382 BaseType = GetTypeHandle (type.BaseType);
2383 else if ((type != TypeManager.object_type) && (type != typeof (object)))
2384 is_interface = true;
2385 this.member_cache = new MemberCache (this);
2388 // IMemberContainer methods
2390 public string Name {
2392 return type.FullName;
2402 public IMemberContainer Parent {
2408 public bool IsInterface {
2410 return is_interface;
2414 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2416 if (mt == MemberTypes.Event)
2417 return new MemberList (type.GetEvents (bf | BindingFlags.DeclaredOnly));
2419 return new MemberList (type.FindMembers (mt, bf | BindingFlags.DeclaredOnly | BindingFlags.IgnoreCase,
2423 // IMemberFinder methods
2425 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2426 MemberFilter filter, object criteria)
2428 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2431 public MemberCache MemberCache {
2433 return member_cache;
2437 public override string ToString ()
2439 if (BaseType != null)
2440 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2442 return "TypeHandle (" + id + "," + Name + ")";