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);
570 TypeAttributes ta = t.Attributes & TypeAttributes.VisibilityMask;
571 if (ta == TypeAttributes.NotPublic ||
572 ta == TypeAttributes.NestedPrivate ||
573 ta == TypeAttributes.NestedAssembly ||
574 ta == TypeAttributes.NestedFamANDAssem)
579 foreach (ModuleBuilder mb in modules) {
580 t = mb.GetType (name);
588 static Hashtable negative_hits = new Hashtable ();
591 // This function is used when you want to avoid the lookups, and want to go
592 // directly to the source. This will use the cache.
594 // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
595 // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
596 // way to test things other than doing a fullname compare
598 public static Type LookupTypeDirect (string name)
600 Type t = (Type) types [name];
604 t = LookupTypeReflection (name);
613 /// Returns the Type associated with @name, takes care of the fact that
614 /// reflection expects nested types to be separated from the main type
615 /// with a "+" instead of a "."
617 public static Type LookupType (string name)
622 // First lookup in user defined and cached values
625 t = (Type) types [name];
629 // Two thirds of the failures are caught here.
630 if (negative_hits.Contains (name))
633 string [] elements = name.Split ('.');
634 int count = elements.Length;
636 for (int n = 1; n <= count; n++){
637 string top_level_type = String.Join (".", elements, 0, n);
639 // One third of the failures are caught here.
640 if (negative_hits.Contains (top_level_type))
643 t = (Type) types [top_level_type];
645 t = LookupTypeReflection (top_level_type);
647 negative_hits [top_level_type] = true;
658 // We know that System.Object does not have children, and since its the parent of
659 // all the objects, it always gets probbed for inner classes.
661 if (top_level_type == "System.Object")
664 string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
665 //Console.WriteLine ("Looking up: " + newt + " " + name);
666 t = LookupTypeReflection (newt);
668 negative_hits [name] = true;
673 negative_hits [name] = true;
678 /// Computes the namespaces that we import from the assemblies we reference.
680 public static void ComputeNamespaces ()
682 MethodInfo assembly_get_namespaces = typeof (Assembly).GetMethod ("GetNamespaces");
685 // First add the assembly namespaces
687 if (assembly_get_namespaces != null){
688 int count = assemblies.Length;
691 for (int i = 0; i < count; i++){
692 Assembly a = assemblies [i];
693 string [] namespaces = (string []) assembly_get_namespaces.Invoke (a, null);
694 foreach (string ns in namespaces){
697 Namespace.LookupNamespace (ns, true);
701 foreach (Assembly a in assemblies){
702 foreach (Type t in a.GetTypes ()){
703 string ns = t.Namespace;
705 // t.Namespace returns null for <PrivateImplDetails>
706 if (ns == ""|| ns == null)
708 Namespace.LookupNamespace (ns, true);
714 public static bool NamespaceClash (string name, Location loc)
716 if (Namespace.LookupNamespace (name, false) == null)
719 Report.Error (519, loc, String.Format ("`{0}' clashes with a predefined namespace", name));
724 /// Returns the C# name of a type if possible, or the full type name otherwise
726 static public string CSharpName (Type t)
728 return Regex.Replace (t.FullName,
730 @"(Int32|UInt32|Int16|UInt16|Int64|UInt64|" +
731 @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
732 @"Boolean|String|Void)" +
734 new MatchEvaluator (CSharpNameMatch));
737 static String CSharpNameMatch (Match match)
739 string s = match.Groups [1].Captures [0].Value;
741 Replace ("int32", "int").
742 Replace ("uint32", "uint").
743 Replace ("int16", "short").
744 Replace ("uint16", "ushort").
745 Replace ("int64", "long").
746 Replace ("uint64", "ulong").
747 Replace ("single", "float").
748 Replace ("boolean", "bool")
749 + match.Groups [2].Captures [0].Value;
753 /// Returns the signature of the method
755 static public string CSharpSignature (MethodBase mb)
760 // FIXME: We should really have a single function to do
761 // everything instead of the following 5 line pattern
763 ParameterData iparams = LookupParametersByBuilder (mb);
765 if (iparams == null){
766 ParameterInfo [] pi = mb.GetParameters ();
767 iparams = new ReflectionParameters (pi);
770 for (int i = 0; i < iparams.Count; i++) {
774 sig += iparams.ParameterDesc(i);
778 return mb.DeclaringType.Name + "." + mb.Name + sig;
782 /// Looks up a type, and aborts if it is not found. This is used
783 /// by types required by the compiler
785 static Type CoreLookupType (string name)
787 Type t = LookupTypeDirect (name);
790 Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
791 Environment.Exit (0);
798 /// Returns the MethodInfo for a method named `name' defined
799 /// in type `t' which takes arguments of types `args'
801 static MethodInfo GetMethod (Type t, string name, Type [] args, bool report_errors)
809 list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public,
810 signature_filter, sig);
811 if (list.Count == 0) {
813 Report.Error (-19, "Can not find the core function `" + name + "'");
817 MethodInfo mi = list [0] as MethodInfo;
820 Report.Error (-19, "Can not find the core function `" + name + "'");
827 static MethodInfo GetMethod (Type t, string name, Type [] args)
829 return GetMethod (t, name, args, true);
834 /// Returns the ConstructorInfo for "args"
836 static ConstructorInfo GetConstructor (Type t, Type [] args)
844 list = FindMembers (t, MemberTypes.Constructor,
845 instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
846 signature_filter, sig);
847 if (list.Count == 0){
848 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
852 ConstructorInfo ci = list [0] as ConstructorInfo;
854 Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
861 public static void InitEnumUnderlyingTypes ()
864 int32_type = CoreLookupType ("System.Int32");
865 int64_type = CoreLookupType ("System.Int64");
866 uint32_type = CoreLookupType ("System.UInt32");
867 uint64_type = CoreLookupType ("System.UInt64");
868 byte_type = CoreLookupType ("System.Byte");
869 sbyte_type = CoreLookupType ("System.SByte");
870 short_type = CoreLookupType ("System.Int16");
871 ushort_type = CoreLookupType ("System.UInt16");
875 /// The types have to be initialized after the initial
876 /// population of the type has happened (for example, to
877 /// bootstrap the corlib.dll
879 public static void InitCoreTypes ()
881 object_type = CoreLookupType ("System.Object");
882 value_type = CoreLookupType ("System.ValueType");
884 InitEnumUnderlyingTypes ();
886 char_type = CoreLookupType ("System.Char");
887 string_type = CoreLookupType ("System.String");
888 float_type = CoreLookupType ("System.Single");
889 double_type = CoreLookupType ("System.Double");
890 char_ptr_type = CoreLookupType ("System.Char*");
891 decimal_type = CoreLookupType ("System.Decimal");
892 bool_type = CoreLookupType ("System.Boolean");
893 enum_type = CoreLookupType ("System.Enum");
895 multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
896 delegate_type = CoreLookupType ("System.Delegate");
898 array_type = CoreLookupType ("System.Array");
899 void_type = CoreLookupType ("System.Void");
900 type_type = CoreLookupType ("System.Type");
902 runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
903 runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
904 default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
905 runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
906 asynccallback_type = CoreLookupType ("System.AsyncCallback");
907 iasyncresult_type = CoreLookupType ("System.IAsyncResult");
908 ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
909 ienumerable_type = CoreLookupType ("System.Collections.IEnumerable");
910 idisposable_type = CoreLookupType ("System.IDisposable");
911 icloneable_type = CoreLookupType ("System.ICloneable");
912 monitor_type = CoreLookupType ("System.Threading.Monitor");
913 intptr_type = CoreLookupType ("System.IntPtr");
915 attribute_type = CoreLookupType ("System.Attribute");
916 attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
917 dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
918 methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
919 marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
920 param_array_type = CoreLookupType ("System.ParamArrayAttribute");
921 in_attribute_type = CoreLookupType ("System.Runtime.InteropServices.InAttribute");
924 // Sigh. Remove this before the release. Wonder what versions of Mono
925 // people are running.
927 guid_attr_type = LookupType ("System.Runtime.InteropServices.GuidAttribute");
929 unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
931 void_ptr_type = CoreLookupType ("System.Void*");
933 indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
935 exception_type = CoreLookupType ("System.Exception");
936 invalid_operation_exception_type = CoreLookupType ("System.InvalidOperationException");
941 obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
942 conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
945 // When compiling corlib, store the "real" types here.
947 if (!RootContext.StdLib) {
948 system_int32_type = typeof (System.Int32);
949 system_array_type = typeof (System.Array);
950 system_type_type = typeof (System.Type);
951 system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
953 Type [] void_arg = { };
954 system_int_array_get_length = GetMethod (
955 system_array_type, "get_Length", void_arg);
956 system_int_array_get_rank = GetMethod (
957 system_array_type, "get_Rank", void_arg);
958 system_object_array_clone = GetMethod (
959 system_array_type, "Clone", void_arg);
961 Type [] system_int_arg = { system_int32_type };
962 system_int_array_get_length_int = GetMethod (
963 system_array_type, "GetLength", system_int_arg);
964 system_int_array_get_upper_bound_int = GetMethod (
965 system_array_type, "GetUpperBound", system_int_arg);
966 system_int_array_get_lower_bound_int = GetMethod (
967 system_array_type, "GetLowerBound", system_int_arg);
969 Type [] system_array_int_arg = { system_array_type, system_int32_type };
970 system_void_array_copyto_array_int = GetMethod (
971 system_array_type, "CopyTo", system_array_int_arg);
973 Type [] system_3_type_arg = {
974 system_type_type, system_type_type, system_type_type };
975 Type [] system_4_type_arg = {
976 system_type_type, system_type_type, system_type_type, system_type_type };
978 MethodInfo set_corlib_type_builders = GetMethod (
979 system_assemblybuilder_type, "SetCorlibTypeBuilders",
980 system_4_type_arg, false);
982 if (set_corlib_type_builders != null) {
983 object[] args = new object [4];
984 args [0] = object_type;
985 args [1] = value_type;
986 args [2] = enum_type;
987 args [3] = void_type;
989 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
991 // Compatibility for an older version of the class libs.
992 set_corlib_type_builders = GetMethod (
993 system_assemblybuilder_type, "SetCorlibTypeBuilders",
994 system_3_type_arg, true);
996 if (set_corlib_type_builders == null) {
997 Report.Error (-26, "Corlib compilation is not supported in Microsoft.NET due to bugs in it");
1001 object[] args = new object [3];
1002 args [0] = object_type;
1003 args [1] = value_type;
1004 args [2] = enum_type;
1006 set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
1012 // The helper methods that are used by the compiler
1014 public static void InitCodeHelpers ()
1017 // Now load the default methods that we use.
1019 Type [] string_string = { string_type, string_type };
1020 string_concat_string_string = GetMethod (
1021 string_type, "Concat", string_string);
1022 Type [] string_string_string = { string_type, string_type, string_type };
1023 string_concat_string_string_string = GetMethod (
1024 string_type, "Concat", string_string_string);
1025 Type [] string_string_string_string = { string_type, string_type, string_type, string_type };
1026 string_concat_string_string_string_string = GetMethod (
1027 string_type, "Concat", string_string_string_string);
1029 Type [] object_object = { object_type, object_type };
1030 string_concat_object_object = GetMethod (
1031 string_type, "Concat", object_object);
1033 Type [] string_ = { string_type };
1034 string_isinterneted_string = GetMethod (
1035 string_type, "IsInterned", string_);
1037 Type [] runtime_type_handle = { runtime_handle_type };
1038 system_type_get_type_from_handle = GetMethod (
1039 type_type, "GetTypeFromHandle", runtime_type_handle);
1041 Type [] delegate_delegate = { delegate_type, delegate_type };
1042 delegate_combine_delegate_delegate = GetMethod (
1043 delegate_type, "Combine", delegate_delegate);
1045 delegate_remove_delegate_delegate = GetMethod (
1046 delegate_type, "Remove", delegate_delegate);
1051 Type [] void_arg = { };
1052 object_getcurrent_void = GetMethod (
1053 ienumerator_type, "get_Current", void_arg);
1054 bool_movenext_void = GetMethod (
1055 ienumerator_type, "MoveNext", void_arg);
1056 void_reset_void = GetMethod (
1057 ienumerator_type, "Reset", void_arg);
1058 void_dispose_void = GetMethod (
1059 idisposable_type, "Dispose", void_arg);
1060 int_get_offset_to_string_data = GetMethod (
1061 runtime_helpers_type, "get_OffsetToStringData", void_arg);
1062 int_array_get_length = GetMethod (
1063 array_type, "get_Length", void_arg);
1064 int_array_get_rank = GetMethod (
1065 array_type, "get_Rank", void_arg);
1066 ienumerable_getenumerator_void = GetMethod (
1067 ienumerable_type, "GetEnumerator", void_arg);
1072 Type [] int_arg = { int32_type };
1073 int_array_get_length_int = GetMethod (
1074 array_type, "GetLength", int_arg);
1075 int_array_get_upper_bound_int = GetMethod (
1076 array_type, "GetUpperBound", int_arg);
1077 int_array_get_lower_bound_int = GetMethod (
1078 array_type, "GetLowerBound", int_arg);
1081 // System.Array methods
1083 object_array_clone = GetMethod (
1084 array_type, "Clone", void_arg);
1085 Type [] array_int_arg = { array_type, int32_type };
1086 void_array_copyto_array_int = GetMethod (
1087 array_type, "CopyTo", array_int_arg);
1092 Type [] object_arg = { object_type };
1093 void_monitor_enter_object = GetMethod (
1094 monitor_type, "Enter", object_arg);
1095 void_monitor_exit_object = GetMethod (
1096 monitor_type, "Exit", object_arg);
1098 Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
1100 void_initializearray_array_fieldhandle = GetMethod (
1101 runtime_helpers_type, "InitializeArray", array_field_handle_arg);
1106 int_getlength_int = GetMethod (
1107 array_type, "GetLength", int_arg);
1110 // Decimal constructors
1112 Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
1113 void_decimal_ctor_five_args = GetConstructor (
1114 decimal_type, dec_arg);
1119 cons_param_array_attribute = GetConstructor (
1120 param_array_type, void_arg);
1122 unverifiable_code_ctor = GetConstructor (
1123 unverifiable_code_type, void_arg);
1126 // InvalidOperationException
1128 invalid_operation_ctor = GetConstructor (
1129 invalid_operation_exception_type, void_arg);
1133 object_ctor = GetConstructor (object_type, void_arg);
1137 const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
1139 static Hashtable type_hash = new Hashtable ();
1142 /// This is the "old", non-cache based FindMembers() function. We cannot use
1143 /// the cache here because there is no member name argument.
1145 public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1146 MemberFilter filter, object criteria)
1148 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1151 // `builder_to_declspace' contains all dynamic types.
1155 Timer.StartTimer (TimerType.FindMembers);
1156 list = decl.FindMembers (mt, bf, filter, criteria);
1157 Timer.StopTimer (TimerType.FindMembers);
1162 // We have to take care of arrays specially, because GetType on
1163 // a TypeBuilder array will return a Type, not a TypeBuilder,
1164 // and we can not call FindMembers on this type.
1166 if (t.IsSubclassOf (TypeManager.array_type))
1167 return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
1170 // Since FindMembers will not lookup both static and instance
1171 // members, we emulate this behaviour here.
1173 if ((bf & instance_and_static) == instance_and_static){
1174 MemberInfo [] i_members = t.FindMembers (
1175 mt, bf & ~BindingFlags.Static, filter, criteria);
1177 int i_len = i_members.Length;
1179 MemberInfo one = i_members [0];
1182 // If any of these are present, we are done!
1184 if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
1185 return new MemberList (i_members);
1188 MemberInfo [] s_members = t.FindMembers (
1189 mt, bf & ~BindingFlags.Instance, filter, criteria);
1191 int s_len = s_members.Length;
1192 if (i_len > 0 || s_len > 0)
1193 return new MemberList (i_members, s_members);
1196 return new MemberList (i_members);
1198 return new MemberList (s_members);
1202 return new MemberList (t.FindMembers (mt, bf, filter, criteria));
1207 /// This method is only called from within MemberLookup. It tries to use the member
1208 /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
1209 /// flag tells the caller whether we used the cache or not. If we used the cache, then
1210 /// our return value will already contain all inherited members and the caller don't need
1211 /// to check base classes and interfaces anymore.
1213 private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
1214 string name, out bool used_cache)
1216 bool not_loaded_corlib = (t.Assembly == CodeGen.AssemblyBuilder);
1219 // We have to take care of arrays specially, because GetType on
1220 // a TypeBuilder array will return a Type, not a TypeBuilder,
1221 // and we can not call FindMembers on this type.
1223 if (t == TypeManager.array_type || t.IsSubclassOf (TypeManager.array_type)) {
1225 return TypeHandle.ArrayType.MemberCache.FindMembers (
1226 mt, bf, name, FilterWithClosure_delegate, null);
1230 // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
1231 // and we can ask the DeclSpace for the MemberCache.
1233 if (t is TypeBuilder) {
1234 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
1235 MemberCache cache = decl.MemberCache;
1238 // If this DeclSpace has a MemberCache, use it.
1241 if (cache != null) {
1243 return cache.FindMembers (
1244 mt, bf, name, FilterWithClosure_delegate, null);
1247 // If there is no MemberCache, we need to use the "normal" FindMembers.
1250 Timer.StartTimer (TimerType.FindMembers);
1251 list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
1252 FilterWithClosure_delegate, name);
1253 Timer.StopTimer (TimerType.FindMembers);
1259 // This call will always succeed. There is exactly one TypeHandle instance per
1260 // type, TypeHandle.GetTypeHandle() will either return it or create a new one
1261 // if it didn't already exist.
1263 TypeHandle handle = TypeHandle.GetTypeHandle (t);
1266 return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
1269 public static bool IsBuiltinType (Type t)
1271 if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
1272 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1273 t == char_type || t == short_type || t == decimal_type || t == bool_type ||
1274 t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
1281 // This is like IsBuiltinType, but lacks decimal_type, we should also clean up
1282 // the pieces in the code where we use IsBuiltinType and special case decimal_type.
1284 public static bool IsCLRType (Type t)
1286 if (t == object_type || t == int32_type || t == uint32_type ||
1287 t == int64_type || t == uint64_type || t == float_type || t == double_type ||
1288 t == char_type || t == short_type || t == bool_type ||
1289 t == sbyte_type || t == byte_type || t == ushort_type)
1295 public static bool IsDelegateType (Type t)
1297 if (t.IsSubclassOf (TypeManager.delegate_type))
1303 public static bool IsEnumType (Type t)
1305 if (t == TypeManager.enum_type || t.IsSubclassOf (TypeManager.enum_type))
1312 // Only a quick hack to get things moving, while real runtime support appears
1314 public static bool IsGeneric (Type t)
1316 DeclSpace ds = (DeclSpace) builder_to_declspace [t];
1318 return ds.IsGeneric;
1322 // Whether a type is unmanaged. This is used by the unsafe code (25.2)
1324 public static bool IsUnmanagedType (Type t)
1326 if (IsBuiltinType (t) && t != TypeManager.string_type)
1335 if (IsValueType (t)){
1336 if (t is TypeBuilder){
1337 TypeContainer tc = LookupTypeContainer (t);
1339 foreach (Field f in tc.Fields){
1340 if (f.FieldBuilder.IsStatic)
1342 if (!IsUnmanagedType (f.FieldBuilder.FieldType))
1346 FieldInfo [] fields = t.GetFields ();
1348 foreach (FieldInfo f in fields){
1351 if (!IsUnmanagedType (f.FieldType))
1361 public static bool IsValueType (Type t)
1363 if (t.IsSubclassOf (TypeManager.value_type) && (t != TypeManager.enum_type))
1369 public static bool IsInterfaceType (Type t)
1371 Interface iface = builder_to_declspace [t] as Interface;
1380 // Checks whether `type' is a subclass or nested child of `parent'.
1382 public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
1385 if ((type == parent) || type.IsSubclassOf (parent))
1388 // Handle nested types.
1389 type = type.DeclaringType;
1390 } while (type != null);
1396 // Checks whether `type' is a nested child of `parent'.
1398 public static bool IsNestedChildOf (Type type, Type parent)
1403 type = type.DeclaringType;
1404 while (type != null) {
1408 type = type.DeclaringType;
1415 // Do the right thing when returning the element type of
1416 // an array type based on whether we
1418 public static Type GetElementType (Type t)
1420 if (RootContext.StdLib)
1421 return t.GetElementType ();
1423 return TypeToCoreType (t.GetElementType ());
1427 /// Returns the User Defined Types
1429 public static ArrayList UserTypes {
1435 public static Hashtable TypeContainers {
1437 return typecontainers;
1441 static Hashtable attr_to_allowmult;
1443 public static void RegisterAttributeAllowMultiple (Type attr_type, bool allow)
1445 if (attr_to_allowmult == null)
1446 attr_to_allowmult = new PtrHashtable ();
1448 if (attr_to_allowmult.Contains (attr_type))
1451 attr_to_allowmult.Add (attr_type, allow);
1455 public static bool AreMultipleAllowed (Type attr_type)
1457 if (!(attr_type is TypeBuilder)) {
1458 System.Attribute [] attrs = System.Attribute.GetCustomAttributes (attr_type);
1460 foreach (System.Attribute tmp in attrs)
1461 if (tmp is AttributeUsageAttribute) {
1462 return ((AttributeUsageAttribute) tmp).AllowMultiple;
1468 if (attr_to_allowmult == null)
1471 return (bool) attr_to_allowmult [attr_type];
1474 static Hashtable builder_to_constant;
1476 public static void RegisterConstant (FieldBuilder fb, Const c)
1478 if (builder_to_constant == null)
1479 builder_to_constant = new PtrHashtable ();
1481 if (builder_to_constant.Contains (fb))
1484 builder_to_constant.Add (fb, c);
1487 public static Const LookupConstant (FieldBuilder fb)
1489 if (builder_to_constant == null)
1492 return (Const) builder_to_constant [fb];
1496 /// Gigantic work around for missing features in System.Reflection.Emit follows.
1500 /// Since System.Reflection.Emit can not return MethodBase.GetParameters
1501 /// for anything which is dynamic, and we need this in a number of places,
1502 /// we register this information here, and use it afterwards.
1504 static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
1509 method_arguments.Add (mb, args);
1510 method_internal_params.Add (mb, ip);
1515 static public InternalParameters LookupParametersByBuilder (MethodBase mb)
1517 if (! (mb is ConstructorBuilder || mb is MethodBuilder))
1520 if (method_internal_params.Contains (mb))
1521 return (InternalParameters) method_internal_params [mb];
1523 throw new Exception ("Argument for Method not registered" + mb);
1527 /// Returns the argument types for a method based on its methodbase
1529 /// For dynamic methods, we use the compiler provided types, for
1530 /// methods from existing assemblies we load them from GetParameters,
1531 /// and insert them into the cache
1533 static public Type [] GetArgumentTypes (MethodBase mb)
1535 if (method_arguments.Contains (mb))
1536 return (Type []) method_arguments [mb];
1538 ParameterInfo [] pi = mb.GetParameters ();
1540 Type [] types = new Type [c];
1542 for (int i = 0; i < c; i++)
1543 types [i] = pi [i].ParameterType;
1545 method_arguments.Add (mb, types);
1551 /// Returns the argument types for an indexer based on its PropertyInfo
1553 /// For dynamic indexers, we use the compiler provided types, for
1554 /// indexers from existing assemblies we load them from GetParameters,
1555 /// and insert them into the cache
1557 static public Type [] GetArgumentTypes (PropertyInfo indexer)
1559 if (indexer_arguments.Contains (indexer))
1560 return (Type []) indexer_arguments [indexer];
1561 else if (indexer is PropertyBuilder)
1562 // If we're a PropertyBuilder and not in the
1563 // `indexer_arguments' hash, then we're a property and
1567 ParameterInfo [] pi = indexer.GetIndexParameters ();
1568 // Property, not an indexer.
1572 Type [] types = new Type [c];
1574 for (int i = 0; i < c; i++)
1575 types [i] = pi [i].ParameterType;
1577 indexer_arguments.Add (indexer, types);
1583 // This is a workaround the fact that GetValue is not
1584 // supported for dynamic types
1586 static Hashtable fields = new Hashtable ();
1587 static public bool RegisterFieldValue (FieldBuilder fb, object value)
1589 if (fields.Contains (fb))
1592 fields.Add (fb, value);
1597 static public object GetValue (FieldBuilder fb)
1602 static Hashtable fieldbuilders_to_fields = new Hashtable ();
1603 static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
1605 if (fieldbuilders_to_fields.Contains (fb))
1608 fieldbuilders_to_fields.Add (fb, f);
1612 static public FieldBase GetField (FieldInfo fb)
1614 return (FieldBase) fieldbuilders_to_fields [fb];
1617 static Hashtable events;
1619 static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
1622 events = new Hashtable ();
1624 if (events.Contains (eb))
1627 events.Add (eb, new Pair (add, remove));
1632 static public MethodInfo GetAddMethod (EventInfo ei)
1634 if (ei is MyEventBuilder) {
1635 Pair pair = (Pair) events [ei];
1637 return (MethodInfo) pair.First;
1639 return ei.GetAddMethod ();
1642 static public MethodInfo GetRemoveMethod (EventInfo ei)
1644 if (ei is MyEventBuilder) {
1645 Pair pair = (Pair) events [ei];
1647 return (MethodInfo) pair.Second;
1649 return ei.GetRemoveMethod ();
1652 static Hashtable priv_fields_events;
1654 static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
1656 if (priv_fields_events == null)
1657 priv_fields_events = new Hashtable ();
1659 if (priv_fields_events.Contains (einfo))
1662 priv_fields_events.Add (einfo, builder);
1667 static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
1669 if (priv_fields_events == null)
1672 return (MemberInfo) priv_fields_events [ei];
1675 static Hashtable properties;
1677 static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
1679 if (properties == null)
1680 properties = new Hashtable ();
1682 if (properties.Contains (pb))
1685 properties.Add (pb, new Pair (get, set));
1690 static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get,
1691 MethodBase set, Type[] args)
1693 if (!RegisterProperty (pb, get,set))
1696 indexer_arguments.Add (pb, args);
1702 /// Given an array of interface types, expand and eliminate repeated ocurrences
1703 /// of an interface.
1707 /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
1710 public static Type [] ExpandInterfaces (Type [] base_interfaces)
1712 ArrayList new_ifaces = new ArrayList ();
1714 foreach (Type iface in base_interfaces){
1715 if (!new_ifaces.Contains (iface))
1716 new_ifaces.Add (iface);
1718 Type [] implementing = TypeManager.GetInterfaces (iface);
1720 foreach (Type imp in implementing){
1721 if (!new_ifaces.Contains (imp))
1722 new_ifaces.Add (imp);
1725 Type [] ret = new Type [new_ifaces.Count];
1726 new_ifaces.CopyTo (ret, 0);
1731 /// This function returns the interfaces in the type `t'. Works with
1732 /// both types and TypeBuilders.
1734 public static Type [] GetInterfaces (Type t)
1737 // The reason for catching the Array case is that Reflection.Emit
1738 // will not return a TypeBuilder for Array types of TypeBuilder types,
1739 // but will still throw an exception if we try to call GetInterfaces
1742 // Since the array interfaces are always constant, we return those for
1747 t = TypeManager.array_type;
1749 if (t is TypeBuilder){
1750 Type [] parent_ifaces;
1752 if (t.BaseType == null)
1753 parent_ifaces = NoTypes;
1755 parent_ifaces = GetInterfaces (t.BaseType);
1756 Type [] type_ifaces = (Type []) builder_to_ifaces [t];
1757 if (type_ifaces == null)
1758 type_ifaces = NoTypes;
1760 int parent_count = parent_ifaces.Length;
1761 Type [] result = new Type [parent_count + type_ifaces.Length];
1762 parent_ifaces.CopyTo (result, 0);
1763 type_ifaces.CopyTo (result, parent_count);
1767 return t.GetInterfaces ();
1771 /// The following is used to check if a given type implements an interface.
1772 /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
1774 public static bool ImplementsInterface (Type t, Type iface)
1779 // FIXME OPTIMIZATION:
1780 // as soon as we hit a non-TypeBuiler in the interface
1781 // chain, we could return, as the `Type.GetInterfaces'
1782 // will return all the interfaces implement by the type
1786 interfaces = GetInterfaces (t);
1788 if (interfaces != null){
1789 foreach (Type i in interfaces){
1796 } while (t != null);
1801 // This is a custom version of Convert.ChangeType() which works
1802 // with the TypeBuilder defined types when compiling corlib.
1803 public static object ChangeType (object value, Type conversionType, out bool error)
1805 if (!(value is IConvertible)){
1810 IConvertible convertValue = (IConvertible) value;
1811 CultureInfo ci = CultureInfo.CurrentCulture;
1812 NumberFormatInfo provider = ci.NumberFormat;
1815 // We must use Type.Equals() here since `conversionType' is
1816 // the TypeBuilder created version of a system type and not
1817 // the system type itself. You cannot use Type.GetTypeCode()
1818 // on such a type - it'd always return TypeCode.Object.
1822 if (conversionType.Equals (typeof (Boolean)))
1823 return (object)(convertValue.ToBoolean (provider));
1824 else if (conversionType.Equals (typeof (Byte)))
1825 return (object)(convertValue.ToByte (provider));
1826 else if (conversionType.Equals (typeof (Char)))
1827 return (object)(convertValue.ToChar (provider));
1828 else if (conversionType.Equals (typeof (DateTime)))
1829 return (object)(convertValue.ToDateTime (provider));
1830 else if (conversionType.Equals (typeof (Decimal)))
1831 return (object)(convertValue.ToDecimal (provider));
1832 else if (conversionType.Equals (typeof (Double)))
1833 return (object)(convertValue.ToDouble (provider));
1834 else if (conversionType.Equals (typeof (Int16)))
1835 return (object)(convertValue.ToInt16 (provider));
1836 else if (conversionType.Equals (typeof (Int32)))
1837 return (object)(convertValue.ToInt32 (provider));
1838 else if (conversionType.Equals (typeof (Int64)))
1839 return (object)(convertValue.ToInt64 (provider));
1840 else if (conversionType.Equals (typeof (SByte)))
1841 return (object)(convertValue.ToSByte (provider));
1842 else if (conversionType.Equals (typeof (Single)))
1843 return (object)(convertValue.ToSingle (provider));
1844 else if (conversionType.Equals (typeof (String)))
1845 return (object)(convertValue.ToString (provider));
1846 else if (conversionType.Equals (typeof (UInt16)))
1847 return (object)(convertValue.ToUInt16 (provider));
1848 else if (conversionType.Equals (typeof (UInt32)))
1849 return (object)(convertValue.ToUInt32 (provider));
1850 else if (conversionType.Equals (typeof (UInt64)))
1851 return (object)(convertValue.ToUInt64 (provider));
1852 else if (conversionType.Equals (typeof (Object)))
1853 return (object)(value);
1863 // This is needed, because enumerations from assemblies
1864 // do not report their underlyingtype, but they report
1867 public static Type EnumToUnderlying (Type t)
1869 if (t == TypeManager.enum_type)
1872 t = t.UnderlyingSystemType;
1873 if (!TypeManager.IsEnumType (t))
1876 if (t is TypeBuilder) {
1877 // slow path needed to compile corlib
1878 if (t == TypeManager.bool_type ||
1879 t == TypeManager.byte_type ||
1880 t == TypeManager.sbyte_type ||
1881 t == TypeManager.char_type ||
1882 t == TypeManager.short_type ||
1883 t == TypeManager.ushort_type ||
1884 t == TypeManager.int32_type ||
1885 t == TypeManager.uint32_type ||
1886 t == TypeManager.int64_type ||
1887 t == TypeManager.uint64_type)
1889 throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
1891 TypeCode tc = Type.GetTypeCode (t);
1894 case TypeCode.Boolean:
1895 return TypeManager.bool_type;
1897 return TypeManager.byte_type;
1898 case TypeCode.SByte:
1899 return TypeManager.sbyte_type;
1901 return TypeManager.char_type;
1902 case TypeCode.Int16:
1903 return TypeManager.short_type;
1904 case TypeCode.UInt16:
1905 return TypeManager.ushort_type;
1906 case TypeCode.Int32:
1907 return TypeManager.int32_type;
1908 case TypeCode.UInt32:
1909 return TypeManager.uint32_type;
1910 case TypeCode.Int64:
1911 return TypeManager.int64_type;
1912 case TypeCode.UInt64:
1913 return TypeManager.uint64_type;
1915 throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
1919 // When compiling corlib and called with one of the core types, return
1920 // the corresponding typebuilder for that type.
1922 public static Type TypeToCoreType (Type t)
1924 if (RootContext.StdLib || (t is TypeBuilder))
1927 TypeCode tc = Type.GetTypeCode (t);
1930 case TypeCode.Boolean:
1931 return TypeManager.bool_type;
1933 return TypeManager.byte_type;
1934 case TypeCode.SByte:
1935 return TypeManager.sbyte_type;
1937 return TypeManager.char_type;
1938 case TypeCode.Int16:
1939 return TypeManager.short_type;
1940 case TypeCode.UInt16:
1941 return TypeManager.ushort_type;
1942 case TypeCode.Int32:
1943 return TypeManager.int32_type;
1944 case TypeCode.UInt32:
1945 return TypeManager.uint32_type;
1946 case TypeCode.Int64:
1947 return TypeManager.int64_type;
1948 case TypeCode.UInt64:
1949 return TypeManager.uint64_type;
1950 case TypeCode.String:
1951 return TypeManager.string_type;
1953 if (t == typeof (void))
1954 return TypeManager.void_type;
1955 if (t == typeof (object))
1956 return TypeManager.object_type;
1957 if (t == typeof (System.Type))
1958 return TypeManager.type_type;
1964 /// Utility function that can be used to probe whether a type
1965 /// is managed or not.
1967 public static bool VerifyUnManaged (Type t, Location loc)
1969 if (t.IsValueType || t.IsPointer){
1971 // FIXME: this is more complex, we actually need to
1972 // make sure that the type does not contain any
1978 if (!RootContext.StdLib && (t == TypeManager.decimal_type))
1979 // We need this explicit check here to make it work when
1980 // compiling corlib.
1985 "Cannot take the address or size of a variable of a managed type ('" +
1986 CSharpName (t) + "')");
1991 /// Returns the name of the indexer in a given type.
1994 /// The default is not always `Item'. The user can change this behaviour by
1995 /// using the DefaultMemberAttribute in the class.
1997 /// For example, the String class indexer is named `Chars' not `Item'
1999 public static string IndexerPropertyName (Type t)
2001 if (t is TypeBuilder) {
2002 if (t.IsInterface) {
2003 Interface i = LookupInterface (t);
2005 if ((i == null) || (i.IndexerName == null))
2008 return i.IndexerName;
2010 TypeContainer tc = LookupTypeContainer (t);
2012 if ((tc == null) || (tc.IndexerName == null))
2015 return tc.IndexerName;
2019 System.Attribute attr = System.Attribute.GetCustomAttribute (
2020 t, TypeManager.default_member_type);
2022 DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
2023 return dma.MemberName;
2029 public static void MakePinned (LocalBuilder builder)
2032 // FIXME: Flag the "LocalBuilder" type as being
2033 // pinned. Figure out API.
2039 // Returns whether the array of memberinfos contains the given method
2041 static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
2043 Type [] new_args = TypeManager.GetArgumentTypes (new_method);
2045 foreach (MethodBase method in array){
2046 if (method.Name != new_method.Name)
2049 Type [] old_args = TypeManager.GetArgumentTypes (method);
2050 int old_count = old_args.Length;
2053 if (new_args.Length != old_count)
2056 for (i = 0; i < old_count; i++){
2057 if (old_args [i] != new_args [i])
2069 // We copy methods from `new_members' into `target_list' if the signature
2070 // for the method from in the new list does not exist in the target_list
2072 // The name is assumed to be the same.
2074 public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
2076 if (target_list == null){
2077 target_list = new ArrayList ();
2079 foreach (MemberInfo mi in new_members){
2080 if (mi is MethodBase)
2081 target_list.Add (mi);
2086 MemberInfo [] target_array = new MemberInfo [target_list.Count];
2087 target_list.CopyTo (target_array, 0);
2089 foreach (MemberInfo mi in new_members){
2090 MethodBase new_method = (MethodBase) mi;
2092 if (!ArrayContainsMethod (target_array, new_method))
2093 target_list.Add (new_method);
2099 public enum MethodFlags {
2101 IsObsoleteError = 2,
2106 // Returns the TypeManager.MethodFlags for this method.
2107 // This emits an error 619 / warning 618 if the method is obsolete.
2108 // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
2110 static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
2112 MethodFlags flags = 0;
2114 if (mb.DeclaringType is TypeBuilder){
2115 MethodData method = (MethodData) builder_to_method [mb];
2116 if (method == null) {
2117 // FIXME: implement Obsolete attribute on Property,
2118 // Indexer and Event.
2122 return method.GetMethodFlags (loc);
2125 object [] attrs = mb.GetCustomAttributes (true);
2126 foreach (object ta in attrs){
2127 if (!(ta is System.Attribute)){
2128 Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
2131 System.Attribute a = (System.Attribute) ta;
2132 if (a.TypeId == TypeManager.obsolete_attribute_type){
2133 ObsoleteAttribute oa = (ObsoleteAttribute) a;
2135 string method_desc = TypeManager.CSharpSignature (mb);
2138 Report.Error (619, loc, "Method `" + method_desc +
2139 "' is obsolete: `" + oa.Message + "'");
2140 return MethodFlags.IsObsoleteError;
2142 Report.Warning (618, loc, "Method `" + method_desc +
2143 "' is obsolete: `" + oa.Message + "'");
2145 flags |= MethodFlags.IsObsolete;
2151 // Skip over conditional code.
2153 if (a.TypeId == TypeManager.conditional_attribute_type){
2154 ConditionalAttribute ca = (ConditionalAttribute) a;
2156 if (RootContext.AllDefines [ca.ConditionString] == null)
2157 flags |= MethodFlags.ShouldIgnore;
2164 #region MemberLookup implementation
2167 // Name of the member
2169 static string closure_name;
2172 // Whether we allow private members in the result (since FindMembers
2173 // uses NonPublic for both protected and private), we need to distinguish.
2175 static bool closure_private_ok;
2178 // Who is invoking us and which type is being queried currently.
2180 static Type closure_invocation_type;
2181 static Type closure_queried_type;
2182 static Type closure_qualifier_type;
2185 // The assembly that defines the type is that is calling us
2187 static Assembly closure_invocation_assembly;
2189 static internal bool FilterNone (MemberInfo m, object filter_criteria)
2195 // This filter filters by name + whether it is ok to include private
2196 // members in the search
2198 static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
2201 // Hack: we know that the filter criteria will always be in the `closure'
2205 if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
2208 if (((closure_qualifier_type == null) || (closure_qualifier_type == closure_invocation_type)) &&
2209 (m.DeclaringType == closure_invocation_type))
2213 // Ugly: we need to find out the type of `m', and depending
2214 // on this, tell whether we accept or not
2216 if (m is MethodBase){
2217 MethodBase mb = (MethodBase) m;
2218 MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
2220 if (ma == MethodAttributes.Private)
2221 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2222 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2225 // FamAndAssem requires that we not only derivate, but we are on the
2228 if (ma == MethodAttributes.FamANDAssem){
2229 if (closure_invocation_assembly != mb.DeclaringType.Assembly)
2233 // Assembly and FamORAssem succeed if we're in the same assembly.
2234 if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
2235 if (closure_invocation_assembly == mb.DeclaringType.Assembly)
2239 // We already know that we aren't in the same assembly.
2240 if (ma == MethodAttributes.Assembly)
2243 // Family and FamANDAssem require that we derive.
2244 if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
2245 if (closure_invocation_type == null)
2248 if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
2251 // Although a derived class can access protected members of its base class
2252 // it cannot do so through an instance of the base class (CS1540).
2253 if (!mb.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2254 (closure_qualifier_type != null) &&
2255 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2265 if (m is FieldInfo){
2266 FieldInfo fi = (FieldInfo) m;
2267 FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
2269 if (fa == FieldAttributes.Private)
2270 return closure_private_ok || (closure_invocation_type == m.DeclaringType) ||
2271 IsNestedChildOf (closure_invocation_type, m.DeclaringType);
2274 // FamAndAssem requires that we not only derivate, but we are on the
2277 if (fa == FieldAttributes.FamANDAssem){
2278 if (closure_invocation_assembly != fi.DeclaringType.Assembly)
2282 // Assembly and FamORAssem succeed if we're in the same assembly.
2283 if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
2284 if (closure_invocation_assembly == fi.DeclaringType.Assembly)
2288 // We already know that we aren't in the same assembly.
2289 if (fa == FieldAttributes.Assembly)
2292 // Family and FamANDAssem require that we derive.
2293 if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
2294 if (closure_invocation_type == null)
2297 if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
2300 // Although a derived class can access protected members of its base class
2301 // it cannot do so through an instance of the base class (CS1540).
2302 if (!fi.IsStatic && (closure_invocation_type != closure_qualifier_type) &&
2303 (closure_qualifier_type != null) &&
2304 closure_invocation_type.IsSubclassOf (closure_qualifier_type))
2315 // EventInfos and PropertyInfos, return true because they lack permission
2316 // informaiton, so we need to check later on the methods.
2321 static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
2322 static MemberFilter FilterNone_delegate = new MemberFilter (FilterNone);
2325 // Looks up a member called `name' in the `queried_type'. This lookup
2326 // is done by code that is contained in the definition for `invocation_type'
2327 // through a qualifier of type `qualifier_type' (or null if there is no qualifier).
2329 // `invocation_type' is used to check whether we're allowed to access the requested
2330 // member wrt its protection level.
2332 // When called from MemberAccess, `qualifier_type' is the type which is used to access
2333 // the requested member (`class B { A a = new A (); a.foo = 5; }'; here invocation_type
2334 // is B and qualifier_type is A). This is used to do the CS1540 check.
2336 // When resolving a SimpleName, `qualifier_type' is null.
2338 // The `qualifier_type' is used for the CS1540 check; it's normally either null or
2339 // the same than `queried_type' - except when we're being called from BaseAccess;
2340 // in this case, `invocation_type' is the current type and `queried_type' the base
2341 // type, so this'd normally trigger a CS1540.
2343 // The binding flags are `bf' and the kind of members being looked up are `mt'
2345 // The return value always includes private members which code in `invocation_type'
2346 // is allowed to access (using the specified `qualifier_type' if given); only use
2347 // BindingFlags.NonPublic to bypass the permission check.
2349 // Returns an array of a single element for everything but Methods/Constructors
2350 // that might return multiple matches.
2352 public static MemberInfo [] MemberLookup (Type invocation_type, Type qualifier_type,
2353 Type queried_type, MemberTypes mt,
2354 BindingFlags original_bf, string name)
2356 Timer.StartTimer (TimerType.MemberLookup);
2358 MemberInfo[] retval = RealMemberLookup (invocation_type, qualifier_type,
2359 queried_type, mt, original_bf, name);
2361 Timer.StopTimer (TimerType.MemberLookup);
2366 static MemberInfo [] RealMemberLookup (Type invocation_type, Type qualifier_type,
2367 Type queried_type, MemberTypes mt,
2368 BindingFlags original_bf, string name)
2370 BindingFlags bf = original_bf;
2372 ArrayList method_list = null;
2373 Type current_type = queried_type;
2374 bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
2375 bool skip_iface_check = true, used_cache = false;
2376 bool always_ok_flag = false;
2378 closure_name = name;
2379 closure_invocation_type = invocation_type;
2380 closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
2381 closure_qualifier_type = qualifier_type;
2384 // If we are a nested class, we always have access to our container
2387 if (invocation_type != null){
2388 string invocation_name = invocation_type.FullName;
2389 if (invocation_name.IndexOf ('+') != -1){
2390 string container = queried_type.FullName + "+";
2391 int container_length = container.Length;
2393 if (invocation_name.Length > container_length){
2394 string shared = invocation_name.Substring (0, container_length);
2396 if (shared == container)
2397 always_ok_flag = true;
2406 // `NonPublic' is lame, because it includes both protected and
2407 // private methods, so we need to control this behavior by
2408 // explicitly tracking if a private method is ok or not.
2410 // The possible cases are:
2411 // public, private and protected (internal does not come into the
2414 if ((invocation_type != null) &&
2415 ((invocation_type == current_type) ||
2416 IsNestedChildOf (invocation_type, current_type)) ||
2418 bf = original_bf | BindingFlags.NonPublic;
2422 closure_private_ok = (original_bf & BindingFlags.NonPublic) != 0;
2423 closure_queried_type = current_type;
2425 Timer.StopTimer (TimerType.MemberLookup);
2427 list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
2429 Timer.StartTimer (TimerType.MemberLookup);
2432 // When queried for an interface type, the cache will automatically check all
2433 // inherited members, so we don't need to do this here. However, this only
2434 // works if we already used the cache in the first iteration of this loop.
2436 // If we used the cache in any further iteration, we can still terminate the
2437 // loop since the cache always looks in all parent classes.
2443 skip_iface_check = false;
2445 if (current_type == TypeManager.object_type)
2448 current_type = current_type.BaseType;
2451 // This happens with interfaces, they have a null
2452 // basetype. Look members up in the Object class.
2454 if (current_type == null)
2455 current_type = TypeManager.object_type;
2458 if (list.Count == 0)
2462 // Events and types are returned by both `static' and `instance'
2463 // searches, which means that our above FindMembers will
2464 // return two copies of the same.
2466 if (list.Count == 1 && !(list [0] is MethodBase)){
2467 return (MemberInfo []) list;
2471 // Multiple properties: we query those just to find out the indexer
2474 if (list [0] is PropertyInfo)
2475 return (MemberInfo []) list;
2478 // We found an event: the cache lookup returns both the event and
2479 // its private field.
2481 if (list [0] is EventInfo) {
2482 if ((list.Count == 2) && (list [1] is FieldInfo))
2483 return new MemberInfo [] { list [0] };
2490 // We found methods, turn the search into "method scan"
2494 method_list = CopyNewMethods (method_list, list);
2495 mt &= (MemberTypes.Method | MemberTypes.Constructor);
2496 } while (searching);
2498 if (method_list != null && method_list.Count > 0) {
2499 return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
2502 // This happens if we already used the cache in the first iteration, in this case
2503 // the cache already looked in all interfaces.
2505 if (skip_iface_check)
2509 // Interfaces do not list members they inherit, so we have to
2512 if (!queried_type.IsInterface)
2515 if (queried_type.IsArray)
2516 queried_type = TypeManager.array_type;
2518 Type [] ifaces = GetInterfaces (queried_type);
2522 foreach (Type itype in ifaces){
2525 x = MemberLookup (null, null, itype, mt, bf, name);
2534 // This is used to extract properties and event declarations from a type
2536 static MemberInfo [] SpecialContainerLookup (Type t, bool is_static)
2538 BindingFlags bf = BindingFlags.DeclaredOnly | (is_static ? BindingFlags.Static : BindingFlags.Instance);
2540 bf |= BindingFlags.Public | BindingFlags.NonPublic;
2542 if (t is TypeBuilder) {
2543 DeclSpace decl = (DeclSpace) builder_to_declspace [t];
2545 return (MemberInfo []) decl.FindMembers (
2546 MemberTypes.Property | MemberTypes.Event,
2547 bf, FilterNone_delegate, null);
2549 return t.FindMembers (MemberTypes.Property | MemberTypes.Event,
2550 bf, FilterNone_delegate, null);
2555 public static bool IsSpecialMethod (MethodBase mb)
2557 Type t = mb.DeclaringType;
2559 MemberInfo [] matches = TypeManager.SpecialContainerLookup (t, mb.IsStatic);
2560 if (matches == null)
2563 foreach (MemberInfo mi in matches){
2564 if (mi is PropertyBuilder){
2565 Pair p = (Pair) properties [mi];
2567 if (p.First == mb || p.Second == mb)
2569 } else if (mi is PropertyInfo){
2570 MethodInfo [] methods = ((PropertyInfo) mi).GetAccessors (true);
2572 foreach (MethodInfo m in methods){
2576 } else if (mi is MyEventBuilder){
2577 Pair p = (Pair) events [mi];
2579 if (p.First == mb || p.Second == mb)
2581 } else if (mi is EventInfo){
2582 EventInfo ei = ((EventInfo) mi);
2584 if (ei.GetAddMethod (true) == mb)
2587 if (ei.GetRemoveMethod (true) == mb)
2590 if (ei.GetRaiseMethod (true) == mb)
2596 // Now check if it is an operator method
2600 if (s.StartsWith ("op_")){
2601 foreach (string name in Unary.oper_names){
2606 foreach (string name in Binary.oper_names){
2620 /// There is exactly one instance of this class per type.
2622 public sealed class TypeHandle : IMemberContainer {
2623 public readonly TypeHandle BaseType;
2625 readonly int id = ++next_id;
2626 static int next_id = 0;
2629 /// Lookup a TypeHandle instance for the given type. If the type doesn't have
2630 /// a TypeHandle yet, a new instance of it is created. This static method
2631 /// ensures that we'll only have one TypeHandle instance per type.
2633 public static TypeHandle GetTypeHandle (Type t)
2635 TypeHandle handle = (TypeHandle) type_hash [t];
2639 handle = new TypeHandle (t);
2640 type_hash.Add (t, handle);
2645 /// Returns the TypeHandle for TypeManager.object_type.
2647 public static IMemberContainer ObjectType {
2649 if (object_type != null)
2652 object_type = GetTypeHandle (TypeManager.object_type);
2659 /// Returns the TypeHandle for TypeManager.array_type.
2661 public static IMemberContainer ArrayType {
2663 if (array_type != null)
2666 array_type = GetTypeHandle (TypeManager.array_type);
2672 private static PtrHashtable type_hash = new PtrHashtable ();
2674 private static TypeHandle object_type = null;
2675 private static TypeHandle array_type = null;
2678 private bool is_interface;
2679 private MemberCache member_cache;
2681 private TypeHandle (Type type)
2684 if (type.BaseType != null)
2685 BaseType = GetTypeHandle (type.BaseType);
2686 else if ((type != TypeManager.object_type) && (type != typeof (object)))
2687 is_interface = true;
2688 this.member_cache = new MemberCache (this);
2691 // IMemberContainer methods
2693 public string Name {
2695 return type.FullName;
2705 public IMemberContainer Parent {
2711 public bool IsInterface {
2713 return is_interface;
2717 public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
2719 if (mt == MemberTypes.Event)
2720 return new MemberList (type.GetEvents (bf | BindingFlags.DeclaredOnly));
2722 return new MemberList (type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
2726 // IMemberFinder methods
2728 public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
2729 MemberFilter filter, object criteria)
2731 return member_cache.FindMembers (mt, bf, name, filter, criteria);
2734 public MemberCache MemberCache {
2736 return member_cache;
2740 public override string ToString ()
2742 if (BaseType != null)
2743 return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
2745 return "TypeHandle (" + id + "," + Name + ")";