2 // typemanager.cs: C# type manager
4 // Author: Miguel de Icaza (miguel@gnu.org)
5 // Ravi Pratap (ravi@ximian.com)
7 // Licensed under the terms of the GNU GPL
9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
14 // We will eventually remove the SIMPLE_SPEEDUP, and should never change
15 // the behavior of the compilation. This can be removed if we rework
16 // the code to get a list of namespaces available.
18 #define SIMPLE_SPEEDUP
22 using System.Globalization;
23 using System.Collections;
24 using System.Reflection;
25 using System.Reflection.Emit;
27 using System.Text.RegularExpressions;
28 using System.Runtime.CompilerServices;
29 using System.Diagnostics;
31 namespace Mono.CSharp {
33 public class TypeManager {
35 // A list of core types that the compiler requires or uses
37 static public Type object_type;
38 static public Type value_type;
39 static public Type string_type;
40 static public Type int32_type;
41 static public Type uint32_type;
42 static public Type int64_type;
43 static public Type uint64_type;
44 static public Type float_type;
45 static public Type double_type;
46 static public Type char_type;
47 static public Type char_ptr_type;
48 static public Type short_type;
49 static public Type decimal_type;
50 static public Type bool_type;
51 static public Type sbyte_type;
52 static public Type byte_type;
53 static public Type ushort_type;
54 static public Type enum_type;
55 static public Type delegate_type;
56 static public Type multicast_delegate_type;
57 static public Type void_type;
58 static public Type enumeration_type;
59 static public Type array_type;
60 static public Type runtime_handle_type;
61 static public Type icloneable_type;
62 static public Type type_type;
63 static public Type ienumerator_type;
64 static public Type ienumerable_type;
65 static public Type idisposable_type;
66 static public Type default_member_type;
67 static public Type iasyncresult_type;
68 static public Type asynccallback_type;
69 static public Type intptr_type;
70 static public Type monitor_type;
71 static public Type runtime_field_handle_type;
72 static public Type attribute_type;
73 static public Type attribute_usage_type;
74 static public Type dllimport_type;
75 static public Type unverifiable_code_type;
76 static public Type methodimpl_attr_type;
77 static public Type marshal_as_attr_type;
78 static public Type param_array_type;
79 static public Type guid_attr_type;
80 static public Type void_ptr_type;
81 static public Type indexer_name_type;
82 static public Type exception_type;
83 static public Type invalid_operation_exception_type;
84 static public object obsolete_attribute_type;
85 static public object conditional_attribute_type;
86 static public Type in_attribute_type;
89 // An empty array of types
91 static public Type [] NoTypes;
95 // Expressions representing the internal types. Used during declaration
98 static public Expression system_object_expr, system_string_expr;
99 static public Expression system_boolean_expr, system_decimal_expr;
100 static public Expression system_single_expr, system_double_expr;
101 static public Expression system_sbyte_expr, system_byte_expr;
102 static public Expression system_int16_expr, system_uint16_expr;
103 static public Expression system_int32_expr, system_uint32_expr;
104 static public Expression system_int64_expr, system_uint64_expr;
105 static public Expression system_char_expr, system_void_expr;
106 static public Expression system_asynccallback_expr;
107 static public Expression system_iasyncresult_expr;
110 // This is only used when compiling corlib
112 static public Type system_int32_type;
113 static public Type system_array_type;
114 static public Type system_type_type;
115 static public Type system_assemblybuilder_type;
116 static public MethodInfo system_int_array_get_length;
117 static public MethodInfo system_int_array_get_rank;
118 static public MethodInfo system_object_array_clone;
119 static public MethodInfo system_int_array_get_length_int;
120 static public MethodInfo system_int_array_get_lower_bound_int;
121 static public MethodInfo system_int_array_get_upper_bound_int;
122 static public MethodInfo system_void_array_copyto_array_int;
126 // Internal, not really used outside
128 static Type runtime_helpers_type;
131 // These methods are called by code generated by the compiler
133 static public MethodInfo string_concat_string_string;
134 static public MethodInfo string_concat_string_string_string;
135 static public MethodInfo string_concat_string_string_string_string;
136 static public MethodInfo string_concat_object_object;
137 static public MethodInfo string_isinterneted_string;
138 static public MethodInfo system_type_get_type_from_handle;
139 static public MethodInfo object_getcurrent_void;
140 static public MethodInfo bool_movenext_void;
141 static public MethodInfo ienumerable_getenumerator_void;
142 static public MethodInfo void_reset_void;
143 static public MethodInfo void_dispose_void;
144 static public MethodInfo void_monitor_enter_object;
145 static public MethodInfo void_monitor_exit_object;
146 static public MethodInfo void_initializearray_array_fieldhandle;
147 static public MethodInfo int_getlength_int;
148 static public MethodInfo delegate_combine_delegate_delegate;
149 static public MethodInfo delegate_remove_delegate_delegate;
150 static public MethodInfo int_get_offset_to_string_data;
151 static public MethodInfo int_array_get_length;
152 static public MethodInfo int_array_get_rank;
153 static public MethodInfo object_array_clone;
154 static public MethodInfo int_array_get_length_int;
155 static public MethodInfo int_array_get_lower_bound_int;
156 static public MethodInfo int_array_get_upper_bound_int;
157 static public MethodInfo void_array_copyto_array_int;
160 // The attribute constructors.
162 static public ConstructorInfo object_ctor;
163 static public ConstructorInfo cons_param_array_attribute;
164 static public ConstructorInfo void_decimal_ctor_five_args;
165 static public ConstructorInfo unverifiable_code_ctor;
166 static public ConstructorInfo invalid_operation_ctor;
169 // Holds the Array of Assemblies that have been loaded
170 // (either because it is the default or the user used the
171 // -r command line option)
173 static Assembly [] assemblies;
176 // Keeps a list of module builders. We used this to do lookups
177 // on the modulebuilder using GetType -- needed for arrays
179 static ModuleBuilder [] modules;
182 // This is the type_cache from the assemblies to avoid
183 // hitting System.Reflection on every lookup.
185 static Hashtable types;
188 // This is used to hotld the corresponding TypeContainer objects
189 // since we need this in FindMembers
191 static Hashtable typecontainers;
194 // Keeps track of those types that are defined by the
197 static ArrayList user_types;
199 static PtrHashtable builder_to_declspace;
202 // Tracks the interfaces implemented by typebuilders. We only
203 // enter those who do implement or or more interfaces
205 static PtrHashtable builder_to_ifaces;
208 // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
209 // the arguments to the method
211 static Hashtable method_arguments;
214 // Maps PropertyBuilder to a Type array that contains
215 // the arguments to the indexer
217 static Hashtable indexer_arguments;
220 // Maybe `method_arguments' should be replaced and only
221 // method_internal_params should be kept?
223 static Hashtable method_internal_params;
226 // Keeps track of attribute types
229 static Hashtable builder_to_attr;
232 // Keeps track of methods
235 static Hashtable builder_to_method;
243 /// A filter for Findmembers that uses the Signature object to
246 static bool SignatureFilter (MemberInfo mi, object criteria)
248 Signature sig = (Signature) criteria;
250 if (!(mi is MethodBase))
253 if (mi.Name != sig.name)
256 int count = sig.args.Length;
258 if (mi is MethodBuilder || mi is ConstructorBuilder){
259 Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
261 if (candidate_args.Length != count)
264 for (int i = 0; i < count; i++)
265 if (candidate_args [i] != sig.args [i])
270 ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
272 if (pars.Length != count)
275 for (int i = 0; i < count; i++)
276 if (pars [i].ParameterType != sig.args [i])
282 // A delegate that points to the filter above.
283 static MemberFilter signature_filter;
286 // These are expressions that represent some of the internal data types, used
289 static void InitExpressionTypes ()
291 system_object_expr = new TypeLookupExpression ("System.Object");
292 system_string_expr = new TypeLookupExpression ("System.String");
293 system_boolean_expr = new TypeLookupExpression ("System.Boolean");
294 system_decimal_expr = new TypeLookupExpression ("System.Decimal");
295 system_single_expr = new TypeLookupExpression ("System.Single");
296 system_double_expr = new TypeLookupExpression ("System.Double");
297 system_sbyte_expr = new TypeLookupExpression ("System.SByte");
298 system_byte_expr = new TypeLookupExpression ("System.Byte");
299 system_int16_expr = new TypeLookupExpression ("System.Int16");
300 system_uint16_expr = new TypeLookupExpression ("System.UInt16");
301 system_int32_expr = new TypeLookupExpression ("System.Int32");
302 system_uint32_expr = new TypeLookupExpression ("System.UInt32");
303 system_int64_expr = new TypeLookupExpression ("System.Int64");
304 system_uint64_expr = new TypeLookupExpression ("System.UInt64");
305 system_char_expr = new TypeLookupExpression ("System.Char");
306 system_void_expr = new TypeLookupExpression ("System.Void");
307 system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
308 system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
311 static TypeManager ()
313 assemblies = new Assembly [0];
315 user_types = new ArrayList ();
317 types = new Hashtable ();
318 typecontainers = new Hashtable ();
320 builder_to_declspace = new PtrHashtable ();
321 builder_to_attr = new PtrHashtable ();
322 builder_to_method = new PtrHashtable ();
323 method_arguments = new PtrHashtable ();
324 method_internal_params = new PtrHashtable ();
325 indexer_arguments = new PtrHashtable ();
326 builder_to_ifaces = new PtrHashtable ();
328 NoTypes = new Type [0];
330 signature_filter = new MemberFilter (SignatureFilter);
331 InitExpressionTypes ();
334 public static void HandleDuplicate (string name, Type t)
336 Type prev = (Type) types [name];
337 TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
341 // This probably never happens, as we catch this before
343 Report.Error (-17, "The type `" + name + "' has already been defined.");
348 tc = builder_to_declspace [t] as TypeContainer;
351 1595, "The type `" + name + "' is defined in an existing assembly;"+
352 " Using the new definition from: " + tc.Location);
355 1595, "The type `" + name + "' is defined in an existing assembly;");
358 Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
364 public static void AddUserType (string name, TypeBuilder t, Type [] ifaces)
369 HandleDuplicate (name, t);
374 builder_to_ifaces [t] = ifaces;
378 // This entry point is used by types that we define under the covers
380 public static void RegisterBuilder (TypeBuilder tb, Type [] ifaces)
383 builder_to_ifaces [tb] = ifaces;
386 public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, Type [] ifaces)
388 builder_to_declspace.Add (t, tc);
389 typecontainers.Add (name, tc);
390 AddUserType (name, t, ifaces);
393 public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
398 HandleDuplicate (name, t);
401 builder_to_declspace.Add (t, del);
404 public static void AddEnumType (string name, TypeBuilder t, Enum en)
409 HandleDuplicate (name, t);
411 builder_to_declspace.Add (t, en);
414 public static void AddUserInterface (string name, TypeBuilder t, Interface i, Type [] ifaces)
416 AddUserType (name, t, ifaces);
417 builder_to_declspace.Add (t, i);
420 public static void AddMethod (MethodBuilder builder, MethodData method)
422 builder_to_method.Add (builder, method);
425 public static void RegisterAttrType (Type t, TypeContainer tc)
427 builder_to_attr.Add (t, tc);
431 /// Returns the DeclSpace whose Type is `t' or null if there is no
432 /// DeclSpace for `t' (ie, the Type comes from a library)
434 public static DeclSpace LookupDeclSpace (Type t)
436 return builder_to_declspace [t] as DeclSpace;
440 /// Returns the TypeContainer whose Type is `t' or null if there is no
441 /// TypeContainer for `t' (ie, the Type comes from a library)
443 public static TypeContainer LookupTypeContainer (Type t)
445 return builder_to_declspace [t] as TypeContainer;
448 public static IMemberContainer LookupMemberContainer (Type t)
450 if (t is TypeBuilder) {
451 IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
452 if (container != null)
456 return TypeHandle.GetTypeHandle (t);
459 public static Interface LookupInterface (Type t)
461 return builder_to_declspace [t] as Interface;
464 public static Delegate LookupDelegate (Type t)
466 return builder_to_declspace [t] as Delegate;
469 public static Enum LookupEnum (Type t)
471 return builder_to_declspace [t] as Enum;
474 public static TypeContainer LookupAttr (Type t)
476 return (TypeContainer) builder_to_attr [t];
480 /// Registers an assembly to load types from.
482 public static void AddAssembly (Assembly a)
484 int top = assemblies.Length;
485 Assembly [] n = new Assembly [top + 1];
487 assemblies.CopyTo (n, 0);
494 /// Registers a module builder to lookup types from
496 public static void AddModule (ModuleBuilder mb)
498 int top = modules != null ? modules.Length : 0;
499 ModuleBuilder [] n = new ModuleBuilder [top + 1];
502 modules.CopyTo (n, 0);
507 static Hashtable references = new Hashtable ();
510 // Gets the reference to T version of the Type (T&)
512 public static Type GetReferenceType (Type t)
514 string tname = t.FullName + "&";
516 Type ret = t.Assembly.GetType (tname);
519 // If the type comes from the assembly we are building
520 // We need the Hashtable, because .NET 1.1 will return different instance types
521 // every time we call ModuleBuilder.GetType.
524 if (references [t] == null)
525 references [t] = CodeGen.ModuleBuilder.GetType (tname);
526 ret = (Type) references [t];
532 static Hashtable pointers = new Hashtable ();
535 // Gets the pointer to T version of the Type (T*)
537 public static Type GetPointerType (Type t)
539 string tname = t.FullName + "*";
541 Type ret = t.Assembly.GetType (tname);
544 // If the type comes from the assembly we are building
545 // We need the Hashtable, because .NET 1.1 will return different instance types
546 // every time we call ModuleBuilder.GetType.
549 if (pointers [t] == null)
550 pointers [t] = CodeGen.ModuleBuilder.GetType (tname);
552 ret = (Type) pointers [t];
559 // Low-level lookup, cache-less
561 static Type LookupTypeReflection (string name)
565 foreach (Assembly a in assemblies){
566 t = a.GetType (name);
571 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
572 if (ta == TypeAttributes.NotPublic ||
573 ta == TypeAttributes.NestedPrivate ||
574 ta == TypeAttributes.NestedAssembly ||
575 ta == TypeAttributes.NestedFamANDAssem){
578 // In .NET pointers turn out to be private, even if their
579 // element type is not
583 t = t.GetElementType ();
592 foreach (ModuleBuilder mb in modules) {
593 t = mb.GetType (name);
601 static Hashtable negative_hits = new Hashtable ();
604 // This function is used when you want to avoid the lookups, and want to go
605 // directly to the source. This will use the cache.
607 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
608 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
609 // way to test things other than doing a fullname compare
611 public static Type LookupTypeDirect (string name)
613 Type t = (Type) types [name];
617 t = LookupTypeReflection (name);
626 /// Returns the Type associated with @name, takes care of the fact that
627 /// reflection expects nested types to be separated from the main type
628 /// with a "+" instead of a "."
630 public static Type LookupType (string name)
635 // First lookup in user defined and cached values
638 t = (Type) types [name];
642 // Two thirds of the failures are caught here.
643 if (negative_hits.Contains (name))
646 string [] elements = name.Split ('.');
647 int count = elements.Length;
649 for (int n = 1; n <= count; n++){
650 string top_level_type = String.Join (".", elements, 0, n);
652 // One third of the failures are caught here.
653 if (negative_hits.Contains (top_level_type))
656 t = (Type) types [top_level_type];
658 t = LookupTypeReflection (top_level_type);
660 negative_hits [top_level_type] = true;
671 // We know that System.Object does not have children, and since its the parent of
672 // all the objects, it always gets probbed for inner classes.
674 if (top_level_type == "System.Object")
677 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
678 //Console.WriteLine ("Looking up: " + newt + " " + name);
679 t = LookupTypeReflection (newt);
681 negative_hits [name] = true;
686 negative_hits [name] = true;
691 /// Computes the namespaces that we import from the assemblies we reference.
693 public static void ComputeNamespaces ()
695 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces");
698 // First add the assembly namespaces
700 if (assembly_get_namespaces != null){
701 int count = assemblies.Length;
704 for (int i = 0; i < count; i++){
705 Assembly a = assemblies [i];
706 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
707 foreach (string ns in namespaces){
710 Namespace.LookupNamespace (ns, true);
714 foreach (Assembly a in assemblies){
715 foreach (Type t in a.GetTypes ()){
716 string ns = t.Namespace;
718 // t.Namespace returns null for <PrivateImplDetails>
719 if (ns == ""|| ns == null)
721 Namespace.LookupNamespace (ns, true);
727 public static bool NamespaceClash (string name, Location loc)
729 if (Namespace.LookupNamespace (name, false) == null)
732 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
737 /// Returns the C# name of a type if possible, or the full type name otherwise
739 static public string CSharpName (Type t)
741 return Regex.Replace (t.FullName,
743 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
744 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
745 @"Boolean|String|Void)" +
747 new MatchEvaluator (CSharpNameMatch));
750 static String CSharpNameMatch (Match match)
752 string s = match.Groups [1].Captures [0].Value;
754 Replace ("int32", "int").
755 Replace ("uint32", "uint").
756 Replace ("int16", "short").
757 Replace ("uint16", "ushort").
758 Replace ("int64", "long").
759 Replace ("uint64", "ulong").
760 Replace ("single", "float").
761 Replace ("boolean", "bool")
762 + match.Groups [2].Captures [0].Value;
766 /// Returns the signature of the method
768 static public string CSharpSignature (MethodBase mb)
773 // FIXME: We should really have a single function to do
774 // everything instead of the following 5 line pattern
776 ParameterData iparams = LookupParametersByBuilder (mb);
778 if (iparams == null){
779 ParameterInfo [] pi = mb.GetParameters ();
780 iparams = new ReflectionParameters (pi);
783 for (int i = 0; i < iparams.Count; i++) {
787 sig += iparams.ParameterDesc(i);
791 return mb.DeclaringType.Name + "." + mb.Name + sig;
795 /// Looks up a type, and aborts if it is not found. This is used
796 /// by types required by the compiler
798 static Type CoreLookupType (string name)
800 Type t = LookupTypeDirect (name);
803 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
804 Environment.Exit (0);
811 /// Returns the MethodInfo for a method named `name' defined
812 /// in type `t' which takes arguments of types `args'
814 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
822 list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public,
823 signature_filter, sig);
824 if (list.Count == 0) {
826 Report.Error (-19, "Can not find the core function `" + name + "'");
830 MethodInfo mi = list [0] as MethodInfo;
833 Report.Error (-19, "Can not find the core function `" + name + "'");
840 static MethodInfo GetMethod (Type t, string name, Type [] args)
842 return GetMethod (t, name, args, true);
847 /// Returns the ConstructorInfo for "args"
849 static ConstructorInfo GetConstructor (Type t, Type [] args)
857 list = FindMembers (t, MemberTypes.Constructor,
858 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
859 signature_filter, sig);
860 if (list.Count == 0){
861 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
865 ConstructorInfo ci = list [0] as ConstructorInfo;
867 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
874 public static void InitEnumUnderlyingTypes ()
877 int32_type = CoreLookupType ("System.Int32");
878 int64_type = CoreLookupType ("System.Int64");
879 uint32_type = CoreLookupType ("System.UInt32");
880 uint64_type = CoreLookupType ("System.UInt64");
881 byte_type = CoreLookupType ("System.Byte");
882 sbyte_type = CoreLookupType ("System.SByte");
883 short_type = CoreLookupType ("System.Int16");
884 ushort_type = CoreLookupType ("System.UInt16");
888 /// The types have to be initialized after the initial
889 /// population of the type has happened (for example, to
890 /// bootstrap the corlib.dll
892 public static void InitCoreTypes ()
894 object_type = CoreLookupType ("System.Object");
895 value_type = CoreLookupType ("System.ValueType");
897 InitEnumUnderlyingTypes ();
899 char_type = CoreLookupType ("System.Char");
900 string_type = CoreLookupType ("System.String");
901 float_type = CoreLookupType ("System.Single");
902 double_type = CoreLookupType ("System.Double");
903 char_ptr_type = CoreLookupType ("System.Char*");
904 decimal_type = CoreLookupType ("System.Decimal");
905 bool_type = CoreLookupType ("System.Boolean");
906 enum_type = CoreLookupType ("System.Enum");
908 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
909 delegate_type = CoreLookupType ("System.Delegate");
911 array_type = CoreLookupType ("System.Array");
912 void_type = CoreLookupType ("System.Void");
913 type_type = CoreLookupType ("System.Type");
915 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
916 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
917 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
918 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
919 asynccallback_type = CoreLookupType ("System.AsyncCallback");
920 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
921 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
922 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
923 idisposable_type = CoreLookupType ("System.IDisposable");
924 icloneable_type = CoreLookupType ("System.ICloneable");
925 monitor_type = CoreLookupType ("System.Threading.Monitor");
926 intptr_type = CoreLookupType ("System.IntPtr");
928 attribute_type = CoreLookupType ("System.Attribute");
929 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
930 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
931 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
932 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
933 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
934 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
937 // Sigh. Remove this before the release. Wonder what versions of Mono
938 // people are running.
940 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
942 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
944 void_ptr_type = CoreLookupType ("System.Void*");
946 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
948 exception_type = CoreLookupType ("System.Exception");
949 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
954 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
955 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
958 // When compiling corlib, store the "real" types here.
960 if (!RootContext.StdLib) {
961 system_int32_type = typeof (System.Int32);
962 system_array_type = typeof (System.Array);
963 system_type_type = typeof (System.Type);
964 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
966 Type [] void_arg = { };
967 system_int_array_get_length = GetMethod (
968 system_array_type, "get_Length", void_arg);
969 system_int_array_get_rank = GetMethod (
970 system_array_type, "get_Rank", void_arg);
971 system_object_array_clone = GetMethod (
972 system_array_type, "Clone", void_arg);
974 Type [] system_int_arg = { system_int32_type };
975 system_int_array_get_length_int = GetMethod (
976 system_array_type, "GetLength", system_int_arg);
977 system_int_array_get_upper_bound_int = GetMethod (
978 system_array_type, "GetUpperBound", system_int_arg);
979 system_int_array_get_lower_bound_int = GetMethod (
980 system_array_type, "GetLowerBound", system_int_arg);
982 Type [] system_array_int_arg = { system_array_type, system_int32_type };
983 system_void_array_copyto_array_int = GetMethod (
984 system_array_type, "CopyTo", system_array_int_arg);
986 Type [] system_3_type_arg = {
987 system_type_type, system_type_type, system_type_type };
988 Type [] system_4_type_arg = {
989 system_type_type, system_type_type, system_type_type, system_type_type };
991 MethodInfo set_corlib_type_builders = GetMethod (
992 system_assemblybuilder_type, "SetCorlibTypeBuilders",
993 system_4_type_arg, false);
995 if (set_corlib_type_builders != null) {
996 object[] args = new object [4];
997 args [0] = object_type;
998 args [1] = value_type;
999 args [2] = enum_type;
1000 args [3] = void_type;
1002 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
1004 // Compatibility for an older version of the class libs.
1005 set_corlib_type_builders = GetMethod (
1006 system_assemblybuilder_type, "SetCorlibTypeBuilders",
1007 system_3_type_arg, true);
1009 if (set_corlib_type_builders == null) {
1010 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1014 object[] args = new object [3];
1015 args [0] = object_type;
1016 args [1] = value_type;
1017 args [2] = enum_type;
1019 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
1025 // The helper methods that are used by the compiler
1027 public static void InitCodeHelpers ()
1030 // Now load the default methods that we use.
1032 Type [] string_string = { string_type, string_type };
1033 string_concat_string_string = GetMethod (
1034 string_type, "Concat", string_string);
1035 Type [] string_string_string = { string_type, string_type, string_type };
1036 string_concat_string_string_string = GetMethod (
1037 string_type, "Concat", string_string_string);
1038 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1039 string_concat_string_string_string_string = GetMethod (
1040 string_type, "Concat", string_string_string_string);
1042 Type [] object_object = { object_type, object_type };
1043 string_concat_object_object = GetMethod (
1044 string_type, "Concat", object_object);
1046 Type [] string_ = { string_type };
1047 string_isinterneted_string = GetMethod (
1048 string_type, "IsInterned", string_);
1050 Type [] runtime_type_handle = { runtime_handle_type };
1051 system_type_get_type_from_handle = GetMethod (
1052 type_type, "GetTypeFromHandle", runtime_type_handle);
1054 Type [] delegate_delegate = { delegate_type, delegate_type };
1055 delegate_combine_delegate_delegate = GetMethod (
1056 delegate_type, "Combine", delegate_delegate);
1058 delegate_remove_delegate_delegate = GetMethod (
1059 delegate_type, "Remove", delegate_delegate);
1064 Type [] void_arg = { };
1065 object_getcurrent_void = GetMethod (
1066 ienumerator_type, "get_Current", void_arg);
1067 bool_movenext_void = GetMethod (
1068 ienumerator_type, "MoveNext", void_arg);
1069 void_reset_void = GetMethod (
1070 ienumerator_type, "Reset", void_arg);
1071 void_dispose_void = GetMethod (
1072 idisposable_type, "Dispose", void_arg);
1073 int_get_offset_to_string_data = GetMethod (
1074 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1075 int_array_get_length = GetMethod (
1076 array_type, "get_Length", void_arg);
1077 int_array_get_rank = GetMethod (
1078 array_type, "get_Rank", void_arg);
1079 ienumerable_getenumerator_void = GetMethod (
1080 ienumerable_type, "GetEnumerator", void_arg);
1085 Type [] int_arg = { int32_type };
1086 int_array_get_length_int = GetMethod (
1087 array_type, "GetLength", int_arg);
1088 int_array_get_upper_bound_int = GetMethod (
1089 array_type, "GetUpperBound", int_arg);
1090 int_array_get_lower_bound_int = GetMethod (
1091 array_type, "GetLowerBound", int_arg);
1094 // System.Array methods
1096 object_array_clone = GetMethod (
1097 array_type, "Clone", void_arg);
1098 Type [] array_int_arg = { array_type, int32_type };
1099 void_array_copyto_array_int = GetMethod (
1100 array_type, "CopyTo", array_int_arg);
1105 Type [] object_arg = { object_type };
1106 void_monitor_enter_object = GetMethod (
1107 monitor_type, "Enter", object_arg);
1108 void_monitor_exit_object = GetMethod (
1109 monitor_type, "Exit", object_arg);
1111 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1113 void_initializearray_array_fieldhandle = GetMethod (
1114 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1119 int_getlength_int = GetMethod (
1120 array_type, "GetLength", int_arg);
1123 // Decimal constructors
1125 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1126 void_decimal_ctor_five_args = GetConstructor (
1127 decimal_type, dec_arg);
1132 cons_param_array_attribute = GetConstructor (
1133 param_array_type, void_arg);
1135 unverifiable_code_ctor = GetConstructor (
1136 unverifiable_code_type, void_arg);
1139 // InvalidOperationException
1141 invalid_operation_ctor = GetConstructor (
1142 invalid_operation_exception_type, void_arg);
1146 object_ctor = GetConstructor (object_type, void_arg);
1150 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1152 static Hashtable type_hash = new Hashtable ();
1155 /// This is the "old", non-cache based FindMembers() function. We cannot use
1156 /// the cache here because there is no member name argument.
1158 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1159 MemberFilter filter, object criteria)
1161 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1164 // `builder_to_declspace' contains all dynamic types.
1168 Timer.StartTimer (TimerType.FindMembers);
1169 list = decl.FindMembers (mt, bf, filter, criteria);
1170 Timer.StopTimer (TimerType.FindMembers);
1175 // We have to take care of arrays specially, because GetType on
1176 // a TypeBuilder array will return a Type, not a TypeBuilder,
1177 // and we can not call FindMembers on this type.
1179 if (t.IsSubclassOf (TypeManager.array_type))
1180 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1183 // Since FindMembers will not lookup both static and instance
1184 // members, we emulate this behaviour here.
1186 if ((bf & instance_and_static) == instance_and_static){
1187 MemberInfo [] i_members = t.FindMembers (
1188 mt, bf & ~BindingFlags.Static, filter, criteria);
1190 int i_len = i_members.Length;
1192 MemberInfo one = i_members [0];
1195 // If any of these are present, we are done!
1197 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1198 return new MemberList (i_members);
1201 MemberInfo [] s_members = t.FindMembers (
1202 mt, bf & ~BindingFlags.Instance, filter, criteria);
1204 int s_len = s_members.Length;
1205 if (i_len > 0 || s_len > 0)
1206 return new MemberList (i_members, s_members);
1209 return new MemberList (i_members);
1211 return new MemberList (s_members);
1215 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1220 /// This method is only called from within MemberLookup. It tries to use the member
1221 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1222 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1223 /// our return value will already contain all inherited members and the caller don't need
1224 /// to check base classes and interfaces anymore.
1226 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1227 string name, out bool used_cache)
1229 bool not_loaded_corlib = (t.Assembly == CodeGen.AssemblyBuilder);
1232 // We have to take care of arrays specially, because GetType on
1233 // a TypeBuilder array will return a Type, not a TypeBuilder,
1234 // and we can not call FindMembers on this type.
1236 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1238 return TypeHandle.ArrayType.MemberCache.FindMembers (
1239 mt, bf, name, FilterWithClosure_delegate, null);
1243 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1244 // and we can ask the DeclSpace for the MemberCache.
1246 if (t is TypeBuilder) {
1247 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1248 MemberCache cache = decl.MemberCache;
1251 // If this DeclSpace has a MemberCache, use it.
1254 if (cache != null) {
1256 return cache.FindMembers (
1257 mt, bf, name, FilterWithClosure_delegate, null);
1260 // If there is no MemberCache, we need to use the "normal" FindMembers.
1263 Timer.StartTimer (TimerType.FindMembers);
1264 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1265 FilterWithClosure_delegate, name);
1266 Timer.StopTimer (TimerType.FindMembers);
1273 // This call will always succeed. There is exactly one TypeHandle instance per
1274 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1275 // if it didn't already exist.
1277 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1280 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1283 public static bool IsBuiltinType (Type t)
1285 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1286 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1287 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1288 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1295 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1296 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1298 public static bool IsCLRType (Type t)
1300 if (t == object_type || t == int32_type || t == uint32_type ||
1301 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1302 t == char_type || t == short_type || t == bool_type ||
1303 t == sbyte_type || t == byte_type || t == ushort_type)
1309 public static bool IsDelegateType (Type t)
1311 if (t.IsSubclassOf (TypeManager.delegate_type))
1317 public static bool IsEnumType (Type t)
1319 if (t == TypeManager.enum_type || t.IsSubclassOf (TypeManager.enum_type))
1324 public static bool IsBuiltinOrEnum (Type t)
1326 if (IsBuiltinType (t))
1336 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1338 public static bool IsUnmanagedType (Type t)
1340 if (IsBuiltinType (t) && t != TypeManager.string_type)
1349 if (IsValueType (t)){
1350 if (t is TypeBuilder){
1351 TypeContainer tc = LookupTypeContainer (t);
1353 foreach (Field f in tc.Fields){
1354 if (f.FieldBuilder.IsStatic)
1356 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1360 FieldInfo [] fields = t.GetFields ();
1362 foreach (FieldInfo f in fields){
1365 if (!IsUnmanagedType (f.FieldType))
1375 public static bool IsValueType (Type t)
1377 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1383 public static bool IsInterfaceType (Type t)
1385 Interface iface = builder_to_declspace [t] as Interface;
1394 // Checks whether `type' is a subclass or nested child of `parent'.
1396 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1399 if ((type == parent) || type.IsSubclassOf (parent))
1402 // Handle nested types.
1403 type = type.DeclaringType;
1404 } while (type != null);
1410 // Checks whether `type' is a nested child of `parent'.
1412 public static bool IsNestedChildOf (Type type, Type parent)
1417 type = type.DeclaringType;
1418 while (type != null) {
1422 type = type.DeclaringType;
1429 // Do the right thing when returning the element type of an
1430 // array type based on whether we are compiling corlib or not
1432 public static Type GetElementType (Type t)
1434 if (RootContext.StdLib)
1435 return t.GetElementType ();
1437 return TypeToCoreType (t.GetElementType ());
1441 /// Returns the User Defined Types
1443 public static ArrayList UserTypes {
1449 public static Hashtable TypeContainers {
1451 return typecontainers;
1455 static Hashtable attr_to_allowmult;
1457 public static void RegisterAttributeAllowMultiple (Type attr_type, bool allow)
1459 if (attr_to_allowmult == null)
1460 attr_to_allowmult = new PtrHashtable ();
1462 if (attr_to_allowmult.Contains (attr_type))
1465 attr_to_allowmult.Add (attr_type, allow);
1469 public static bool AreMultipleAllowed (Type attr_type)
1471 if (!(attr_type is TypeBuilder)) {
1472 System.Attribute [] attrs = System.Attribute.GetCustomAttributes (attr_type);
1474 foreach (System.Attribute tmp in attrs)
1475 if (tmp is AttributeUsageAttribute) {
1476 return ((AttributeUsageAttribute) tmp).AllowMultiple;
1482 if (attr_to_allowmult == null)
1485 return (bool) attr_to_allowmult [attr_type];
1488 static Hashtable builder_to_constant;
1490 public static void RegisterConstant (FieldBuilder fb, Const c)
1492 if (builder_to_constant == null)
1493 builder_to_constant = new PtrHashtable ();
1495 if (builder_to_constant.Contains (fb))
1498 builder_to_constant.Add (fb, c);
1501 public static Const LookupConstant (FieldBuilder fb)
1503 if (builder_to_constant == null)
1506 return (Const) builder_to_constant [fb];
1510 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1514 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1515 /// for anything which is dynamic, and we need this in a number of places,
1516 /// we register this information here, and use it afterwards.
1518 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1523 method_arguments.Add (mb, args);
1524 method_internal_params.Add (mb, ip);
1529 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1531 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1534 if (method_internal_params.Contains (mb))
1535 return (InternalParameters) method_internal_params [mb];
1537 throw new Exception ("Argument for Method not registered" + mb);
1541 /// Returns the argument types for a method based on its methodbase
1543 /// For dynamic methods, we use the compiler provided types, for
1544 /// methods from existing assemblies we load them from GetParameters,
1545 /// and insert them into the cache
1547 static public Type [] GetArgumentTypes (MethodBase mb)
1549 if (method_arguments.Contains (mb))
1550 return (Type []) method_arguments [mb];
1552 ParameterInfo [] pi = mb.GetParameters ();
1554 Type [] types = new Type [c];
1556 for (int i = 0; i < c; i++)
1557 types [i] = pi [i].ParameterType;
1559 method_arguments.Add (mb, types);
1565 /// Returns the argument types for an indexer based on its PropertyInfo
1567 /// For dynamic indexers, we use the compiler provided types, for
1568 /// indexers from existing assemblies we load them from GetParameters,
1569 /// and insert them into the cache
1571 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1573 if (indexer_arguments.Contains (indexer))
1574 return (Type []) indexer_arguments [indexer];
1575 else if (indexer is PropertyBuilder)
1576 // If we're a PropertyBuilder and not in the
1577 // `indexer_arguments' hash, then we're a property and
1581 ParameterInfo [] pi = indexer.GetIndexParameters ();
1582 // Property, not an indexer.
1586 Type [] types = new Type [c];
1588 for (int i = 0; i < c; i++)
1589 types [i] = pi [i].ParameterType;
1591 indexer_arguments.Add (indexer, types);
1597 // This is a workaround the fact that GetValue is not
1598 // supported for dynamic types
1600 static Hashtable fields = new Hashtable ();
1601 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1603 if (fields.Contains (fb))
1606 fields.Add (fb, value);
1611 static public object GetValue (FieldBuilder fb)
1616 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1617 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1619 if (fieldbuilders_to_fields.Contains (fb))
1622 fieldbuilders_to_fields.Add (fb, f);
1627 // The return value can be null; This will be the case for
1628 // auxiliary FieldBuilders created by the compiler that have no
1629 // real field being declared on the source code
1631 static public FieldBase GetField (FieldInfo fb)
1633 return (FieldBase) fieldbuilders_to_fields [fb];
1636 static Hashtable events;
1638 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1641 events = new Hashtable ();
1643 if (events.Contains (eb))
1646 events.Add (eb, new Pair (add, remove));
1651 static public MethodInfo GetAddMethod (EventInfo ei)
1653 if (ei is MyEventBuilder) {
1654 Pair pair = (Pair) events [ei];
1656 return (MethodInfo) pair.First;
1658 return ei.GetAddMethod ();
1661 static public MethodInfo GetRemoveMethod (EventInfo ei)
1663 if (ei is MyEventBuilder) {
1664 Pair pair = (Pair) events [ei];
1666 return (MethodInfo) pair.Second;
1668 return ei.GetRemoveMethod ();
1671 static Hashtable priv_fields_events;
1673 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1675 if (priv_fields_events == null)
1676 priv_fields_events = new Hashtable ();
1678 if (priv_fields_events.Contains (einfo))
1681 priv_fields_events.Add (einfo, builder);
1686 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1688 if (priv_fields_events == null)
1691 return (MemberInfo) priv_fields_events [ei];
1694 static Hashtable properties;
1696 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1698 if (properties == null)
1699 properties = new Hashtable ();
1701 if (properties.Contains (pb))
1704 properties.Add (pb, new Pair (get, set));
1709 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1710 MethodBase set, Type[] args)
1712 if (!RegisterProperty (pb, get,set))
1715 indexer_arguments.Add (pb, args);
1721 /// Given an array of interface types, expand and eliminate repeated ocurrences
1722 /// of an interface.
1726 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1729 public static Type [] ExpandInterfaces (Type [] base_interfaces)
1731 ArrayList new_ifaces = new ArrayList ();
1733 foreach (Type iface in base_interfaces){
1734 if (!new_ifaces.Contains (iface))
1735 new_ifaces.Add (iface);
1737 Type [] implementing = TypeManager.GetInterfaces (iface);
1739 foreach (Type imp in implementing){
1740 if (!new_ifaces.Contains (imp))
1741 new_ifaces.Add (imp);
1744 Type [] ret = new Type [new_ifaces.Count];
1745 new_ifaces.CopyTo (ret, 0);
1750 /// This function returns the interfaces in the type `t'. Works with
1751 /// both types and TypeBuilders.
1753 public static Type [] GetInterfaces (Type t)
1756 // The reason for catching the Array case is that Reflection.Emit
1757 // will not return a TypeBuilder for Array types of TypeBuilder types,
1758 // but will still throw an exception if we try to call GetInterfaces
1761 // Since the array interfaces are always constant, we return those for
1766 t = TypeManager.array_type;
1768 if (t is TypeBuilder){
1769 Type [] parent_ifaces;
1771 if (t.BaseType == null)
1772 parent_ifaces = NoTypes;
1774 parent_ifaces = GetInterfaces (t.BaseType);
1775 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
1776 if (type_ifaces == null)
1777 type_ifaces = NoTypes;
1779 int parent_count = parent_ifaces.Length;
1780 Type [] result = new Type [parent_count + type_ifaces.Length];
1781 parent_ifaces.CopyTo (result, 0);
1782 type_ifaces.CopyTo (result, parent_count);
1786 return t.GetInterfaces ();
1790 /// The following is used to check if a given type implements an interface.
1791 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1793 public static bool ImplementsInterface (Type t, Type iface)
1798 // FIXME OPTIMIZATION:
1799 // as soon as we hit a non-TypeBuiler in the interface
1800 // chain, we could return, as the `Type.GetInterfaces'
1801 // will return all the interfaces implement by the type
1805 interfaces = GetInterfaces (t);
1807 if (interfaces != null){
1808 foreach (Type i in interfaces){
1815 } while (t != null);
1820 // This is a custom version of Convert.ChangeType() which works
1821 // with the TypeBuilder defined types when compiling corlib.
1822 public static object ChangeType (object value, Type conversionType, out bool error)
1824 if (!(value is IConvertible)){
1829 IConvertible convertValue = (IConvertible) value;
1830 CultureInfo ci = CultureInfo.CurrentCulture;
1831 NumberFormatInfo provider = ci.NumberFormat;
1834 // We must use Type.Equals() here since `conversionType' is
1835 // the TypeBuilder created version of a system type and not
1836 // the system type itself. You cannot use Type.GetTypeCode()
1837 // on such a type - it'd always return TypeCode.Object.
1841 if (conversionType.Equals (typeof (Boolean)))
1842 return (object)(convertValue.ToBoolean (provider));
1843 else if (conversionType.Equals (typeof (Byte)))
1844 return (object)(convertValue.ToByte (provider));
1845 else if (conversionType.Equals (typeof (Char)))
1846 return (object)(convertValue.ToChar (provider));
1847 else if (conversionType.Equals (typeof (DateTime)))
1848 return (object)(convertValue.ToDateTime (provider));
1849 else if (conversionType.Equals (typeof (Decimal)))
1850 return (object)(convertValue.ToDecimal (provider));
1851 else if (conversionType.Equals (typeof (Double)))
1852 return (object)(convertValue.ToDouble (provider));
1853 else if (conversionType.Equals (typeof (Int16)))
1854 return (object)(convertValue.ToInt16 (provider));
1855 else if (conversionType.Equals (typeof (Int32)))
1856 return (object)(convertValue.ToInt32 (provider));
1857 else if (conversionType.Equals (typeof (Int64)))
1858 return (object)(convertValue.ToInt64 (provider));
1859 else if (conversionType.Equals (typeof (SByte)))
1860 return (object)(convertValue.ToSByte (provider));
1861 else if (conversionType.Equals (typeof (Single)))
1862 return (object)(convertValue.ToSingle (provider));
1863 else if (conversionType.Equals (typeof (String)))
1864 return (object)(convertValue.ToString (provider));
1865 else if (conversionType.Equals (typeof (UInt16)))
1866 return (object)(convertValue.ToUInt16 (provider));
1867 else if (conversionType.Equals (typeof (UInt32)))
1868 return (object)(convertValue.ToUInt32 (provider));
1869 else if (conversionType.Equals (typeof (UInt64)))
1870 return (object)(convertValue.ToUInt64 (provider));
1871 else if (conversionType.Equals (typeof (Object)))
1872 return (object)(value);
1882 // This is needed, because enumerations from assemblies
1883 // do not report their underlyingtype, but they report
1886 public static Type EnumToUnderlying (Type t)
1888 if (t == TypeManager.enum_type)
1891 t = t.UnderlyingSystemType;
1892 if (!TypeManager.IsEnumType (t))
1895 if (t is TypeBuilder) {
1896 // slow path needed to compile corlib
1897 if (t == TypeManager.bool_type ||
1898 t == TypeManager.byte_type ||
1899 t == TypeManager.sbyte_type ||
1900 t == TypeManager.char_type ||
1901 t == TypeManager.short_type ||
1902 t == TypeManager.ushort_type ||
1903 t == TypeManager.int32_type ||
1904 t == TypeManager.uint32_type ||
1905 t == TypeManager.int64_type ||
1906 t == TypeManager.uint64_type)
1908 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1910 TypeCode tc = Type.GetTypeCode (t);
1913 case TypeCode.Boolean:
1914 return TypeManager.bool_type;
1916 return TypeManager.byte_type;
1917 case TypeCode.SByte:
1918 return TypeManager.sbyte_type;
1920 return TypeManager.char_type;
1921 case TypeCode.Int16:
1922 return TypeManager.short_type;
1923 case TypeCode.UInt16:
1924 return TypeManager.ushort_type;
1925 case TypeCode.Int32:
1926 return TypeManager.int32_type;
1927 case TypeCode.UInt32:
1928 return TypeManager.uint32_type;
1929 case TypeCode.Int64:
1930 return TypeManager.int64_type;
1931 case TypeCode.UInt64:
1932 return TypeManager.uint64_type;
1934 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1938 // When compiling corlib and called with one of the core types, return
1939 // the corresponding typebuilder for that type.
1941 public static Type TypeToCoreType (Type t)
1943 if (RootContext.StdLib || (t is TypeBuilder))
1946 TypeCode tc = Type.GetTypeCode (t);
1949 case TypeCode.Boolean:
1950 return TypeManager.bool_type;
1952 return TypeManager.byte_type;
1953 case TypeCode.SByte:
1954 return TypeManager.sbyte_type;
1956 return TypeManager.char_type;
1957 case TypeCode.Int16:
1958 return TypeManager.short_type;
1959 case TypeCode.UInt16:
1960 return TypeManager.ushort_type;
1961 case TypeCode.Int32:
1962 return TypeManager.int32_type;
1963 case TypeCode.UInt32:
1964 return TypeManager.uint32_type;
1965 case TypeCode.Int64:
1966 return TypeManager.int64_type;
1967 case TypeCode.UInt64:
1968 return TypeManager.uint64_type;
1969 case TypeCode.Single:
1970 return TypeManager.float_type;
1971 case TypeCode.Double:
1972 return TypeManager.double_type;
1973 case TypeCode.String:
1974 return TypeManager.string_type;
1976 if (t == typeof (void))
1977 return TypeManager.void_type;
1978 if (t == typeof (object))
1979 return TypeManager.object_type;
1980 if (t == typeof (System.Type))
1981 return TypeManager.type_type;
1987 /// Utility function that can be used to probe whether a type
1988 /// is managed or not.
1990 public static bool VerifyUnManaged (Type t, Location loc)
1992 if (t.IsValueType || t.IsPointer){
1994 // FIXME: this is more complex, we actually need to
1995 // make sure that the type does not contain any
2001 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
2002 // We need this explicit check here to make it work when
2003 // compiling corlib.
2008 "Cannot take the address or size of a variable of a managed type ('" +
2009 CSharpName (t) + "')");
2014 /// Returns the name of the indexer in a given type.
2017 /// The default is not always `Item'. The user can change this behaviour by
2018 /// using the DefaultMemberAttribute in the class.
2020 /// For example, the String class indexer is named `Chars' not `Item'
2022 public static string IndexerPropertyName (Type t)
2024 if (t is TypeBuilder) {
2025 if (t.IsInterface) {
2026 Interface i = LookupInterface (t);
2028 if ((i == null) || (i.IndexerName == null))
2031 return i.IndexerName;
2033 TypeContainer tc = LookupTypeContainer (t);
2035 if ((tc == null) || (tc.IndexerName == null))
2038 return tc.IndexerName;
2042 System.Attribute attr = System.Attribute.GetCustomAttribute (
2043 t, TypeManager.default_member_type);
2045 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2046 return dma.MemberName;
2052 public static void MakePinned (LocalBuilder builder)
2055 // FIXME: Flag the "LocalBuilder" type as being
2056 // pinned. Figure out API.
2062 // Returns whether the array of memberinfos contains the given method
2064 public static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2066 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2068 foreach (MethodBase method in array) {
2069 if (method.Name != new_method.Name)
2072 if (method is MethodInfo && new_method is MethodInfo)
2073 if (((MethodInfo) method).ReturnType != ((MethodInfo) new_method).ReturnType)
2077 Type [] old_args = TypeManager.GetArgumentTypes (method);
2078 int old_count = old_args.Length;
2081 if (new_args.Length != old_count)
2084 for (i = 0; i < old_count; i++){
2085 if (old_args [i] != new_args [i])
2098 // We copy methods from `new_members' into `target_list' if the signature
2099 // for the method from in the new list does not exist in the target_list
2101 // The name is assumed to be the same.
2103 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
2105 if (target_list == null){
2106 target_list = new ArrayList ();
2108 foreach (MemberInfo mi in new_members){
2109 if (mi is MethodBase)
2110 target_list.Add (mi);
2115 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2116 target_list.CopyTo (target_array, 0);
2118 foreach (MemberInfo mi in new_members){
2119 MethodBase new_method = (MethodBase) mi;
2121 if (!ArrayContainsMethod (target_array, new_method))
2122 target_list.Add (new_method);
2128 public enum MethodFlags {
2130 IsObsoleteError = 1 << 1,
2131 ShouldIgnore = 1 << 2
2135 // Returns the TypeManager.MethodFlags for this method.
2136 // This emits an error 619 / warning 618 if the method is obsolete.
2137 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
2139 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
2141 MethodFlags flags = 0;
2143 if (mb.DeclaringType is TypeBuilder){
2144 MethodData method = (MethodData) builder_to_method [mb];
2145 if (method == null) {
2146 // FIXME: implement Obsolete attribute on Property,
2147 // Indexer and Event.
2151 return method.GetMethodFlags (loc);
2154 object [] attrs = mb.GetCustomAttributes (true);
2155 foreach (object ta in attrs){
2156 if (!(ta is System.Attribute)){
2157 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
2160 System.Attribute a = (System.Attribute) ta;
2161 if (a.TypeId == TypeManager.obsolete_attribute_type){
2162 ObsoleteAttribute oa = (ObsoleteAttribute) a;
2164 string method_desc = TypeManager.CSharpSignature (mb);
2167 Report.Error (619, loc, "Method `" + method_desc +
2168 "' is obsolete: `" + oa.Message + "'");
2169 return MethodFlags.IsObsoleteError;
2171 Report.Warning (618, loc, "Method `" + method_desc +
2172 "' is obsolete: `" + oa.Message + "'");
2174 flags |= MethodFlags.IsObsolete;
2180 // Skip over conditional code.
2182 if (a.TypeId == TypeManager.conditional_attribute_type){
2183 ConditionalAttribute ca = (ConditionalAttribute) a;
2185 if (RootContext.AllDefines [ca.ConditionString] == null)
2186 flags |= MethodFlags.ShouldIgnore;
2193 #region MemberLookup implementation
2196 // Name of the member
2198 static string closure_name;
2201 // Whether we allow private members in the result (since FindMembers
2202 // uses NonPublic for both protected and private), we need to distinguish.
2204 static bool closure_private_ok;
2207 // Who is invoking us and which type is being queried currently.
2209 static Type closure_invocation_type;
2210 static Type closure_queried_type;
2211 static Type closure_qualifier_type;
2214 // The assembly that defines the type is that is calling us
2216 static Assembly closure_invocation_assembly;
2218 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2224 // This filter filters by name + whether it is ok to include private
2225 // members in the search
2227 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
2230 // Hack: we know that the filter criteria will always be in the `closure'
2234 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2237 if (((closure_qualifier_type == null) || (closure_qualifier_type == closure_invocation_type)) &&
2238 (m.DeclaringType == closure_invocation_type))
2242 // Ugly: we need to find out the type of `m', and depending
2243 // on this, tell whether we accept or not
2245 if (m is MethodBase){
2246 MethodBase mb = (MethodBase) m;
2247 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2249 if (ma == MethodAttributes.Private)
2250 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2251 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2254 // FamAndAssem requires that we not only derivate, but we are on the
2257 if (ma == MethodAttributes.FamANDAssem){
2258 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
2262 // Assembly and FamORAssem succeed if we're in the same assembly.
2263 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2264 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
2268 // We already know that we aren't in the same assembly.
2269 if (ma == MethodAttributes.Assembly)
2272 // Family and FamANDAssem require that we derive.
2273 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2274 if (closure_invocation_type == null)
2277 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2280 // Although a derived class can access protected members of its base class
2281 // it cannot do so through an instance of the base class (CS1540).
2282 if (!mb.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2283 (closure_qualifier_type != null) &&
2284 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2294 if (m is FieldInfo){
2295 FieldInfo fi = (FieldInfo) m;
2296 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2298 if (fa == FieldAttributes.Private)
2299 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2300 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2303 // FamAndAssem requires that we not only derivate, but we are on the
2306 if (fa == FieldAttributes.FamANDAssem){
2307 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2311 // Assembly and FamORAssem succeed if we're in the same assembly.
2312 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2313 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2317 // We already know that we aren't in the same assembly.
2318 if (fa == FieldAttributes.Assembly)
2321 // Family and FamANDAssem require that we derive.
2322 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2323 if (closure_invocation_type == null)
2326 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2329 // Although a derived class can access protected members of its base class
2330 // it cannot do so through an instance of the base class (CS1540).
2331 if (!fi.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2332 (closure_qualifier_type != null) &&
2333 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2344 // EventInfos and PropertyInfos, return true because they lack permission
2345 // informaiton, so we need to check later on the methods.
2350 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2351 static MemberFilter FilterNone_delegate = new MemberFilter (FilterNone);
2354 // Looks up a member called `name' in the `queried_type'. This lookup
2355 // is done by code that is contained in the definition for `invocation_type'
2356 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2358 // `invocation_type' is used to check whether we're allowed to access the requested
2359 // member wrt its protection level.
2361 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2362 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2363 // is B and qualifier_type is A). This is used to do the CS1540 check.
2365 // When resolving a SimpleName, `qualifier_type' is null.
2367 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2368 // the same than `queried_type' - except when we're being called from BaseAccess;
2369 // in this case, `invocation_type' is the current type and `queried_type' the base
2370 // type, so this'd normally trigger a CS1540.
2372 // The binding flags are `bf' and the kind of members being looked up are `mt'
2374 // The return value always includes private members which code in `invocation_type'
2375 // is allowed to access (using the specified `qualifier_type' if given); only use
2376 // BindingFlags.NonPublic to bypass the permission check.
2378 // Returns an array of a single element for everything but Methods/Constructors
2379 // that might return multiple matches.
2381 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2382 Type queried_type, MemberTypes mt,
2383 BindingFlags original_bf, string name)
2385 Timer.StartTimer (TimerType.MemberLookup);
2387 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2388 queried_type, mt, original_bf, name);
2390 Timer.StopTimer (TimerType.MemberLookup);
2395 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2396 Type queried_type, MemberTypes mt,
2397 BindingFlags original_bf, string name)
2399 BindingFlags bf = original_bf;
2401 ArrayList method_list = null;
2402 Type current_type = queried_type;
2403 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2404 bool skip_iface_check = true, used_cache = false;
2405 bool always_ok_flag = false;
2407 closure_name = name;
2408 closure_invocation_type = invocation_type;
2409 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2410 closure_qualifier_type = qualifier_type;
2413 // If we are a nested class, we always have access to our container
2416 if (invocation_type != null){
2417 string invocation_name = invocation_type.FullName;
2418 if (invocation_name.IndexOf ('+') != -1){
2419 string container = queried_type.FullName + "+";
2420 int container_length = container.Length;
2422 if (invocation_name.Length > container_length){
2423 string shared = invocation_name.Substring (0, container_length);
2425 if (shared == container)
2426 always_ok_flag = true;
2435 // `NonPublic' is lame, because it includes both protected and
2436 // private methods, so we need to control this behavior by
2437 // explicitly tracking if a private method is ok or not.
2439 // The possible cases are:
2440 // public, private and protected (internal does not come into the
2443 if ((invocation_type != null) &&
2444 ((invocation_type == current_type) ||
2445 IsNestedChildOf (invocation_type, current_type)) ||
2447 bf = original_bf | BindingFlags.NonPublic;
2451 closure_private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2452 closure_queried_type = current_type;
2454 Timer.StopTimer (TimerType.MemberLookup);
2456 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2458 Timer.StartTimer (TimerType.MemberLookup);
2461 // When queried for an interface type, the cache will automatically check all
2462 // inherited members, so we don't need to do this here. However, this only
2463 // works if we already used the cache in the first iteration of this loop.
2465 // If we used the cache in any further iteration, we can still terminate the
2466 // loop since the cache always looks in all parent classes.
2472 skip_iface_check = false;
2474 if (current_type == TypeManager.object_type)
2477 current_type = current_type.BaseType;
2480 // This happens with interfaces, they have a null
2481 // basetype. Look members up in the Object class.
2483 if (current_type == null)
2484 current_type = TypeManager.object_type;
2487 if (list.Count == 0)
2491 // Events and types are returned by both `static' and `instance'
2492 // searches, which means that our above FindMembers will
2493 // return two copies of the same.
2495 if (list.Count == 1 && !(list [0] is MethodBase)){
2496 return (MemberInfo []) list;
2500 // Multiple properties: we query those just to find out the indexer
2503 if (list [0] is PropertyInfo)
2504 return (MemberInfo []) list;
2507 // We found an event: the cache lookup returns both the event and
2508 // its private field.
2510 if (list [0] is EventInfo) {
2511 if ((list.Count == 2) && (list [1] is FieldInfo))
2512 return new MemberInfo [] { list [0] };
2519 // We found methods, turn the search into "method scan"
2523 method_list = CopyNewMethods (method_list, list);
2524 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2525 } while (searching);
2527 if (method_list != null && method_list.Count > 0)
2528 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2531 // This happens if we already used the cache in the first iteration, in this case
2532 // the cache already looked in all interfaces.
2534 if (skip_iface_check)
2538 // Interfaces do not list members they inherit, so we have to
2541 if (!queried_type.IsInterface)
2544 if (queried_type.IsArray)
2545 queried_type = TypeManager.array_type;
2547 Type [] ifaces = GetInterfaces (queried_type);
2551 foreach (Type itype in ifaces){
2554 x = MemberLookup (null, null, itype, mt, bf, name);
2563 // This is used to extract properties and event declarations from a type
2565 static MemberInfo [] SpecialContainerLookup (Type t, bool is_static)
2567 BindingFlags bf = BindingFlags.DeclaredOnly | (is_static ? BindingFlags.Static : BindingFlags.Instance);
2569 bf |= BindingFlags.Public | BindingFlags.NonPublic;
2571 if (t is TypeBuilder) {
2572 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
2574 return (MemberInfo []) decl.FindMembers (
2575 MemberTypes.Property | MemberTypes.Event,
2576 bf, FilterNone_delegate, null);
2578 return t.FindMembers (MemberTypes.Property | MemberTypes.Event,
2579 bf, FilterNone_delegate, null);
2584 public static bool IsSpecialMethod (MethodBase mb)
2586 Type t = mb.DeclaringType;
2588 MemberInfo [] matches = TypeManager.SpecialContainerLookup (t, mb.IsStatic);
2589 if (matches == null)
2592 foreach (MemberInfo mi in matches){
2593 if (mi is PropertyBuilder){
2594 Pair p = (Pair) properties [mi];
2596 if (p.First == mb || p.Second == mb)
2598 } else if (mi is PropertyInfo){
2599 MethodInfo [] methods = ((PropertyInfo) mi).GetAccessors (true);
2601 foreach (MethodInfo m in methods){
2605 } else if (mi is MyEventBuilder){
2606 Pair p = (Pair) events [mi];
2608 if (p.First == mb || p.Second == mb)
2610 } else if (mi is EventInfo){
2611 EventInfo ei = ((EventInfo) mi);
2613 if (ei.GetAddMethod (true) == mb)
2616 if (ei.GetRemoveMethod (true) == mb)
2619 if (ei.GetRaiseMethod (true) == mb)
2625 // Now check if it is an operator method
2629 if (s.StartsWith ("op_")){
2630 foreach (string name in Unary.oper_names){
2635 foreach (string name in Binary.oper_names){
2649 /// There is exactly one instance of this class per type.
2651 public sealed class TypeHandle : IMemberContainer {
2652 public readonly TypeHandle BaseType;
2654 readonly int id = ++next_id;
2655 static int next_id = 0;
2658 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2659 /// a TypeHandle yet, a new instance of it is created. This static method
2660 /// ensures that we'll only have one TypeHandle instance per type.
2662 public static TypeHandle GetTypeHandle (Type t)
2664 TypeHandle handle = (TypeHandle) type_hash [t];
2668 handle = new TypeHandle (t);
2669 type_hash.Add (t, handle);
2674 /// Returns the TypeHandle for TypeManager.object_type.
2676 public static IMemberContainer ObjectType {
2678 if (object_type != null)
2681 object_type = GetTypeHandle (TypeManager.object_type);
2688 /// Returns the TypeHandle for TypeManager.array_type.
2690 public static IMemberContainer ArrayType {
2692 if (array_type != null)
2695 array_type = GetTypeHandle (TypeManager.array_type);
2701 private static PtrHashtable type_hash = new PtrHashtable ();
2703 private static TypeHandle object_type = null;
2704 private static TypeHandle array_type = null;
2707 private bool is_interface;
2708 private MemberCache member_cache;
2710 private TypeHandle (Type type)
2713 if (type.BaseType != null)
2714 BaseType = GetTypeHandle (type.BaseType);
2715 this.is_interface = type.IsInterface;
2716 this.member_cache = new MemberCache (this);
2719 // IMemberContainer methods
2721 public string Name {
2723 return type.FullName;
2733 public IMemberContainer Parent {
2739 public bool IsInterface {
2741 return is_interface;
2745 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2747 MemberInfo [] members;
2748 if (mt == MemberTypes.Event)
2749 members = type.GetEvents (bf | BindingFlags.DeclaredOnly);
2751 members = type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2753 Array.Reverse (members);
2755 return new MemberList (members);
2758 // IMemberFinder methods
2760 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2761 MemberFilter filter, object criteria)
2763 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2766 public MemberCache MemberCache {
2768 return member_cache;
2772 public override string ToString ()
2774 if (BaseType != null)
2775 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2777 return "TypeHandle (" + id + "," + Name + ")";