2 // import.cs: System.Reflection conversions
4 // Authors: Marek Safar (marek.safar@gmail.com)
6 // Dual licensed under the terms of the MIT X11 or GNU GPL
8 // Copyright 2009-2011 Novell, Inc
9 // Copyright 2011-2012 Xamarin, Inc (http://www.xamarin.com)
13 using System.Runtime.CompilerServices;
15 using System.Collections.Generic;
19 using MetaType = IKVM.Reflection.Type;
20 using IKVM.Reflection;
21 using IKVM.Reflection.Emit;
23 using MetaType = System.Type;
24 using System.Reflection;
25 using System.Reflection.Emit;
30 public abstract class MetadataImporter
33 // Dynamic types reader with additional logic to reconstruct a dynamic
34 // type using DynamicAttribute values
36 protected struct DynamicTypeReader
38 static readonly bool[] single_attribute = { true };
43 // There is no common type for CustomAttributeData and we cannot
44 // use ICustomAttributeProvider
48 // A member provider which can be used to get CustomAttributeData
50 public DynamicTypeReader (object provider)
54 this.provider = provider;
58 // Returns true when object at local position has dynamic attribute flag
60 public bool IsDynamicObject ()
65 return flags != null && Position < flags.Length && flags[Position];
69 // Returns true when DynamicAttribute exists
71 public bool HasDynamicAttribute ()
79 IList<CustomAttributeData> GetCustomAttributes ()
81 var mi = provider as MemberInfo;
83 return CustomAttributeData.GetCustomAttributes (mi);
85 var pi = provider as ParameterInfo;
87 return CustomAttributeData.GetCustomAttributes (pi);
95 var cad = GetCustomAttributes ();
101 foreach (var ca in cad) {
102 var dt = ca.Constructor.DeclaringType;
103 if (dt.Name != "DynamicAttribute" || dt.Namespace != CompilerServicesNamespace)
106 if (ca.ConstructorArguments.Count == 0) {
107 flags = single_attribute;
111 var arg_type = ca.ConstructorArguments[0].ArgumentType;
113 if (arg_type.IsArray && MetaType.GetTypeCode (arg_type.GetElementType ()) == TypeCode.Boolean) {
114 var carg = (IList<CustomAttributeTypedArgument>) ca.ConstructorArguments[0].Value;
115 flags = new bool[carg.Count];
116 for (int i = 0; i < flags.Length; ++i) {
117 if (MetaType.GetTypeCode (carg[i].ArgumentType) == TypeCode.Boolean)
118 flags[i] = (bool) carg[i].Value;
130 protected readonly Dictionary<MetaType, TypeSpec> import_cache;
131 protected readonly Dictionary<MetaType, TypeSpec> compiled_types;
132 protected readonly Dictionary<Assembly, IAssemblyDefinition> assembly_2_definition;
133 protected readonly ModuleContainer module;
135 public static readonly string CompilerServicesNamespace = "System.Runtime.CompilerServices";
137 protected MetadataImporter (ModuleContainer module)
139 this.module = module;
141 import_cache = new Dictionary<MetaType, TypeSpec> (1024, ReferenceEquality<MetaType>.Default);
142 compiled_types = new Dictionary<MetaType, TypeSpec> (40, ReferenceEquality<MetaType>.Default);
143 assembly_2_definition = new Dictionary<Assembly, IAssemblyDefinition> (ReferenceEquality<Assembly>.Default);
144 IgnorePrivateMembers = true;
145 IgnoreCompilerGeneratedField = true;
150 public ICollection<IAssemblyDefinition> Assemblies {
152 return assembly_2_definition.Values;
156 public bool IgnorePrivateMembers { get; set; }
158 public bool IgnoreCompilerGeneratedField { get; set; }
162 public abstract void AddCompiledType (TypeBuilder builder, TypeSpec spec);
163 protected abstract MemberKind DetermineKindFromBaseType (MetaType baseType);
164 protected abstract bool HasVolatileModifier (MetaType[] modifiers);
166 public FieldSpec CreateField (FieldInfo fi, TypeSpec declaringType)
169 var fa = fi.Attributes;
170 switch (fa & FieldAttributes.FieldAccessMask) {
171 case FieldAttributes.Public:
172 mod = Modifiers.PUBLIC;
174 case FieldAttributes.Assembly:
175 mod = Modifiers.INTERNAL;
177 case FieldAttributes.Family:
178 mod = Modifiers.PROTECTED;
180 case FieldAttributes.FamORAssem:
181 mod = Modifiers.PROTECTED | Modifiers.INTERNAL;
184 // Ignore private fields (even for error reporting) to not require extra dependencies
185 if (IgnorePrivateMembers && !declaringType.IsStruct)
188 if (IgnoreCompilerGeneratedField && HasAttribute (CustomAttributeData.GetCustomAttributes (fi), "CompilerGeneratedAttribute", CompilerServicesNamespace))
191 mod = Modifiers.PRIVATE;
198 field_type = ImportType (fi.FieldType, new DynamicTypeReader (fi), declaringType);
201 // Private field has private type which is not fixed buffer
203 if (field_type == null)
205 } catch (Exception e) {
206 // TODO: I should construct fake TypeSpec based on TypeRef signature
207 // but there is no way to do it with System.Reflection
208 throw new InternalErrorException (e, "Cannot import field `{0}.{1}' referenced in assembly `{2}'",
209 declaringType.GetSignatureForError (), fi.Name, declaringType.MemberDefinition.DeclaringAssembly);
212 var definition = new ImportedMemberDefinition (fi, field_type, this);
214 if ((fa & FieldAttributes.Literal) != 0) {
215 Constant c = field_type.Kind == MemberKind.MissingType ?
216 new NullConstant (InternalType.ErrorType, Location.Null) :
217 CreateConstantFromValue (field_type, fi);
218 return new ConstSpec (declaringType, definition, field_type, fi, mod | Modifiers.STATIC, c);
221 if ((fa & FieldAttributes.InitOnly) != 0) {
222 if (field_type.BuiltinType == BuiltinTypeSpec.Type.Decimal) {
223 var dc = ReadDecimalConstant (CustomAttributeData.GetCustomAttributes (fi));
225 return new ConstSpec (declaringType, definition, field_type, fi, mod | Modifiers.STATIC, dc);
228 mod |= Modifiers.READONLY;
230 var req_mod = fi.GetRequiredCustomModifiers ();
231 if (req_mod.Length > 0 && HasVolatileModifier (req_mod))
232 mod |= Modifiers.VOLATILE;
235 if ((fa & FieldAttributes.Static) != 0) {
236 mod |= Modifiers.STATIC;
238 // Fixed buffers cannot be static
239 if (declaringType.IsStruct && field_type.IsStruct && field_type.IsNested &&
240 HasAttribute (CustomAttributeData.GetCustomAttributes (fi), "FixedBufferAttribute", CompilerServicesNamespace)) {
242 // TODO: Sanity check on field_type (only few types are allowed)
243 var element_field = CreateField (fi.FieldType.GetField (FixedField.FixedElementName), declaringType);
244 return new FixedFieldSpec (module, declaringType, definition, fi, element_field, mod);
248 return new FieldSpec (declaringType, definition, field_type, fi, mod);
251 Constant CreateConstantFromValue (TypeSpec fieldType, FieldInfo fi)
253 var value = fi.GetRawConstantValue ();
255 // Metadata value can be encoded using different constant value type
256 // than is actual field type
258 // e.g. unsigned int16 CONSTANT = int16 (0x0000ffff)
260 if (value != null && !fieldType.IsEnum) {
261 var c = ImportConstant (value);
263 return fieldType == c.Type ? c : c.ConvertExplicitly (false, fieldType);
267 return Constant.CreateConstantFromValue (fieldType, value, Location.Null);
270 public EventSpec CreateEvent (EventInfo ei, TypeSpec declaringType, MethodSpec add, MethodSpec remove)
272 add.IsAccessor = true;
273 remove.IsAccessor = true;
275 if (add.Modifiers != remove.Modifiers)
276 throw new NotImplementedException ("Different accessor modifiers " + ei.Name);
278 var event_type = ImportType (ei.EventHandlerType, new DynamicTypeReader (ei), declaringType);
279 var definition = new ImportedMemberDefinition (ei, event_type, this);
280 return new EventSpec (declaringType, definition, event_type, add.Modifiers, add, remove);
283 TypeParameterSpec[] CreateGenericParameters (MetaType type, TypeSpec declaringType)
285 var tparams = type.GetGenericArguments ();
287 int parent_owned_count;
289 parent_owned_count = type.DeclaringType.GetGenericArguments ().Length;
292 // System.Reflection duplicates parent type parameters for each
293 // nested type with slightly modified properties (eg. different owner)
294 // This just makes things more complicated (think of cloned constraints)
295 // therefore we remap any nested type owned by parent using `type_cache'
296 // to the single TypeParameterSpec
298 if (declaringType != null && parent_owned_count > 0) {
300 while (read_count != parent_owned_count) {
301 var tparams_count = declaringType.Arity;
302 if (tparams_count != 0) {
303 var parent_tp = declaringType.MemberDefinition.TypeParameters;
304 read_count += tparams_count;
305 for (int i = 0; i < tparams_count; i++) {
306 import_cache.Add (tparams[parent_owned_count - read_count + i], parent_tp[i]);
310 declaringType = declaringType.DeclaringType;
314 parent_owned_count = 0;
317 if (tparams.Length - parent_owned_count == 0)
320 return CreateGenericParameters (parent_owned_count, tparams);
323 TypeParameterSpec[] CreateGenericParameters (int first, MetaType[] tparams)
325 var tspec = new TypeParameterSpec[tparams.Length - first];
326 for (int pos = first; pos < tparams.Length; ++pos) {
327 var type = tparams[pos];
328 int index = pos - first;
330 tspec[index] = (TypeParameterSpec) CreateType (type, new DynamicTypeReader (), false);
336 TypeSpec[] CreateGenericArguments (int first, MetaType[] tparams, DynamicTypeReader dtype)
340 var tspec = new TypeSpec [tparams.Length - first];
341 for (int pos = first; pos < tparams.Length; ++pos) {
342 var type = tparams[pos];
343 int index = pos - first;
346 if (type.HasElementType) {
347 var element = type.GetElementType ();
349 spec = ImportType (element, dtype, null);
352 throw new NotImplementedException ("Unknown element type " + type.ToString ());
355 spec = ArrayContainer.MakeType (module, spec, type.GetArrayRank ());
357 spec = CreateType (type, dtype, true);
360 // We treat nested generic types as inflated internally where
361 // reflection uses type definition
364 // IFoo<A<T>> foo; // A<T> is definition in this case
367 if (!IsMissingType (type) && type.IsGenericTypeDefinition) {
368 var start_pos = GetDeclaringTypesTypeParametersCount (spec);
369 var targs = CreateGenericArguments (start_pos, type.GetGenericArguments (), dtype);
370 spec = spec.MakeGenericType (module, targs);
384 static int GetDeclaringTypesTypeParametersCount (TypeSpec spec)
387 while (spec.DeclaringType != null) {
388 total += spec.DeclaringType.MemberDefinition.TypeParametersCount;
389 spec = spec.DeclaringType;
395 public MethodSpec CreateMethod (MethodBase mb, TypeSpec declaringType)
397 Modifiers mod = ReadMethodModifiers (mb, declaringType);
398 TypeParameterSpec[] tparams;
400 var parameters = CreateParameters (declaringType, mb.GetParameters (), mb);
402 if (mb.IsGenericMethod) {
403 if (!mb.IsGenericMethodDefinition)
404 throw new NotSupportedException ("assert");
406 tparams = CreateGenericParameters (0, mb.GetGenericArguments ());
413 if (mb.MemberType == MemberTypes.Constructor) {
414 kind = MemberKind.Constructor;
415 returnType = module.Compiler.BuiltinTypes.Void;
418 // Detect operators and destructors
420 string name = mb.Name;
421 kind = MemberKind.Method;
422 if (tparams == null && !mb.DeclaringType.IsInterface && name.Length > 6) {
423 if ((mod & (Modifiers.STATIC | Modifiers.PUBLIC)) == (Modifiers.STATIC | Modifiers.PUBLIC)) {
424 if (name[2] == '_' && name[1] == 'p' && name[0] == 'o' && (mb.Attributes & MethodAttributes.SpecialName) != 0) {
425 var op_type = Operator.GetType (name);
426 if (op_type.HasValue && parameters.Count > 0 && parameters.Count < 3) {
427 kind = MemberKind.Operator;
430 } else if (parameters.IsEmpty && name == Destructor.MetadataName) {
431 kind = MemberKind.Destructor;
432 if (declaringType.BuiltinType == BuiltinTypeSpec.Type.Object) {
433 mod &= ~Modifiers.OVERRIDE;
434 mod |= Modifiers.VIRTUAL;
439 var mi = (MethodInfo) mb;
440 returnType = ImportType (mi.ReturnType, new DynamicTypeReader (mi.ReturnParameter), declaringType);
442 // Cannot set to OVERRIDE without full hierarchy checks
443 // this flag indicates that the method could be override
444 // but further validation is needed
445 if ((mod & Modifiers.OVERRIDE) != 0) {
446 bool is_real_override = false;
447 if (kind == MemberKind.Method && declaringType.BaseType != null) {
448 var btype = declaringType.BaseType;
449 if (IsOverrideMethodBaseTypeAccessible (btype)) {
450 var filter = MemberFilter.Method (name, tparams != null ? tparams.Length : 0, parameters, null);
451 var candidate = MemberCache.FindMember (btype, filter, BindingRestriction.None);
454 // For imported class method do additional validation to be sure that metadata
455 // override flag was correct
457 // Difference between protected internal and protected is ok
459 const Modifiers conflict_mask = Modifiers.AccessibilityMask & ~Modifiers.INTERNAL;
460 if (candidate != null && (candidate.Modifiers & conflict_mask) == (mod & conflict_mask) && !candidate.IsStatic) {
461 is_real_override = true;
466 if (!is_real_override) {
467 mod &= ~Modifiers.OVERRIDE;
468 if ((mod & Modifiers.SEALED) != 0)
469 mod &= ~Modifiers.SEALED;
471 mod |= Modifiers.VIRTUAL;
473 } else if (parameters.HasExtensionMethodType) {
474 mod |= Modifiers.METHOD_EXTENSION;
478 IMethodDefinition definition;
479 if (tparams != null) {
480 var gmd = new ImportedGenericMethodDefinition ((MethodInfo) mb, returnType, parameters, tparams, this);
481 foreach (var tp in gmd.TypeParameters) {
482 ImportTypeParameterTypeConstraints (tp, tp.GetMetaInfo ());
487 definition = new ImportedMethodDefinition (mb, returnType, parameters, this);
490 MethodSpec ms = new MethodSpec (kind, declaringType, definition, returnType, parameters, mod);
497 bool IsOverrideMethodBaseTypeAccessible (TypeSpec baseType)
499 switch (baseType.Modifiers & Modifiers.AccessibilityMask) {
500 case Modifiers.PUBLIC:
502 case Modifiers.INTERNAL:
504 // Check whether imported method in base type is accessible from compiled
507 return baseType.MemberDefinition.IsInternalAsPublic (module.DeclaringAssembly);
508 case Modifiers.PRIVATE:
512 // protected internal
514 // Method accessibility checks will be done later based on context
515 // where the method is called (CS0122 error will be reported for inaccessible)
522 // Imports System.Reflection parameters
524 AParametersCollection CreateParameters (TypeSpec parent, ParameterInfo[] pi, MethodBase method)
526 int varargs = method != null && (method.CallingConvention & CallingConventions.VarArgs) != 0 ? 1 : 0;
528 if (pi.Length == 0 && varargs == 0)
529 return ParametersCompiled.EmptyReadOnlyParameters;
531 TypeSpec[] types = new TypeSpec[pi.Length + varargs];
532 IParameterData[] par = new IParameterData[pi.Length + varargs];
533 bool is_params = false;
534 for (int i = 0; i < pi.Length; i++) {
535 ParameterInfo p = pi[i];
536 Parameter.Modifier mod = 0;
537 Expression default_value = null;
538 if (p.ParameterType.IsByRef) {
539 if ((p.Attributes & (ParameterAttributes.Out | ParameterAttributes.In)) == ParameterAttributes.Out)
540 mod = Parameter.Modifier.OUT;
542 mod = Parameter.Modifier.REF;
545 // Strip reference wrapping
547 var el = p.ParameterType.GetElementType ();
548 types[i] = ImportType (el, new DynamicTypeReader (p), parent); // TODO: 1-based positio to be csc compatible
549 } else if (i == 0 && method.IsStatic && (parent.Modifiers & Modifiers.METHOD_EXTENSION) != 0 &&
550 HasAttribute (CustomAttributeData.GetCustomAttributes (method), "ExtensionAttribute", CompilerServicesNamespace)) {
551 mod = Parameter.Modifier.This;
552 types[i] = ImportType (p.ParameterType, new DynamicTypeReader (p), parent);
554 types[i] = ImportType (p.ParameterType, new DynamicTypeReader (p), parent);
556 if (i >= pi.Length - 2 && types[i] is ArrayContainer) {
557 if (HasAttribute (CustomAttributeData.GetCustomAttributes (p), "ParamArrayAttribute", "System")) {
558 mod = Parameter.Modifier.PARAMS;
563 if (!is_params && p.IsOptional) {
564 object value = p.RawDefaultValue;
565 var ptype = types[i];
566 if ((p.Attributes & ParameterAttributes.HasDefault) != 0 && ptype.Kind != MemberKind.TypeParameter && (value != null || TypeSpec.IsReferenceType (ptype))) {
568 default_value = Constant.CreateConstantFromValue (ptype, null, Location.Null);
570 default_value = ImportConstant (value);
573 default_value = new EnumConstant ((Constant) default_value, ptype);
577 var attrs = CustomAttributeData.GetCustomAttributes (p);
578 for (int ii = 0; ii < attrs.Count; ++ii) {
579 var attr = attrs[ii];
580 var dt = attr.Constructor.DeclaringType;
581 if (dt.Namespace != CompilerServicesNamespace)
584 if (dt.Name == "CallerLineNumberAttribute" && (ptype.BuiltinType == BuiltinTypeSpec.Type.Int || Convert.ImplicitNumericConversionExists (module.Compiler.BuiltinTypes.Int, ptype)))
585 mod |= Parameter.Modifier.CallerLineNumber;
586 else if (dt.Name == "CallerFilePathAttribute" && Convert.ImplicitReferenceConversionExists (module.Compiler.BuiltinTypes.String, ptype))
587 mod |= Parameter.Modifier.CallerFilePath;
588 else if (dt.Name == "CallerMemberNameAttribute" && Convert.ImplicitReferenceConversionExists (module.Compiler.BuiltinTypes.String, ptype))
589 mod |= Parameter.Modifier.CallerMemberName;
591 } else if (value == Missing.Value) {
592 default_value = EmptyExpression.MissingValue;
593 } else if (value == null) {
594 default_value = new DefaultValueExpression (new TypeExpression (ptype, Location.Null), Location.Null);
595 } else if (ptype.BuiltinType == BuiltinTypeSpec.Type.Decimal) {
596 default_value = ImportConstant (value);
601 par[i] = new ParameterData (p.Name, mod, default_value);
605 par[par.Length - 1] = new ArglistParameter (Location.Null);
606 types[types.Length - 1] = InternalType.Arglist;
609 return method != null ?
610 new ParametersImported (par, types, varargs != 0, is_params) :
611 new ParametersImported (par, types, is_params);
615 // Returns null when the property is not valid C# property
617 public PropertySpec CreateProperty (PropertyInfo pi, TypeSpec declaringType, MethodSpec get, MethodSpec set)
620 AParametersCollection param = null;
621 TypeSpec type = null;
624 param = get.Parameters;
625 type = get.ReturnType;
628 bool is_valid_property = true;
630 if (set.ReturnType.Kind != MemberKind.Void)
631 is_valid_property = false;
633 var set_param_count = set.Parameters.Count - 1;
635 if (set_param_count < 0) {
637 is_valid_property = false;
640 var set_type = set.Parameters.Types[set_param_count];
643 AParametersCollection set_based_param;
645 if (set_param_count == 0) {
646 set_based_param = ParametersCompiled.EmptyReadOnlyParameters;
649 // Create indexer parameters based on setter method parameters (the last parameter has to be removed)
651 var data = new IParameterData[set_param_count];
652 var types = new TypeSpec[set_param_count];
653 Array.Copy (set.Parameters.FixedParameters, data, set_param_count);
654 Array.Copy (set.Parameters.Types, types, set_param_count);
655 set_based_param = new ParametersImported (data, types, set.Parameters.HasParams);
659 param = set_based_param;
662 if (set_param_count != get.Parameters.Count)
663 is_valid_property = false;
665 if (get.ReturnType != set_type)
666 is_valid_property = false;
668 // Possible custom accessor modifiers
669 if ((mod & Modifiers.AccessibilityMask) != (set.Modifiers & Modifiers.AccessibilityMask)) {
670 var get_acc = mod & Modifiers.AccessibilityMask;
671 if (get_acc != Modifiers.PUBLIC) {
672 var set_acc = set.Modifiers & Modifiers.AccessibilityMask;
673 // If the accessor modifiers are not same, do extra restriction checks
674 if (get_acc != set_acc) {
675 var get_restr = ModifiersExtensions.IsRestrictedModifier (get_acc, set_acc);
676 var set_restr = ModifiersExtensions.IsRestrictedModifier (set_acc, get_acc);
677 if (get_restr && set_restr) {
678 is_valid_property = false; // Neither is more restrictive
682 mod &= ~Modifiers.AccessibilityMask;
691 PropertySpec spec = null;
692 if (!param.IsEmpty) {
693 if (is_valid_property) {
694 var index_name = declaringType.MemberDefinition.GetAttributeDefaultMember ();
695 if (index_name == null || index_name != pi.Name) {
696 is_valid_property = false;
700 is_valid_property = false;
704 is_valid_property = false;
708 if (is_valid_property) {
709 spec = new IndexerSpec (declaringType, new ImportedParameterMemberDefinition (pi, type, param, this), type, param, pi, mod);
710 } else if (declaringType.MemberDefinition.IsComImport && param.FixedParameters[0].HasDefaultValue) {
712 // Enables support for properties with parameters (must have default value) of COM-imported types
714 is_valid_property = true;
716 for (int i = 0; i < param.FixedParameters.Length; ++i) {
717 if (!param.FixedParameters[i].HasDefaultValue) {
718 is_valid_property = false;
727 spec = new PropertySpec (MemberKind.Property, declaringType, new ImportedMemberDefinition (pi, type, this), type, pi, mod);
729 if (!is_valid_property) {
730 spec.IsNotCSharpCompatible = true;
742 public TypeSpec CreateType (MetaType type)
744 return CreateType (type, new DynamicTypeReader (), true);
747 public TypeSpec CreateNestedType (MetaType type, TypeSpec declaringType)
749 return CreateType (type, declaringType, new DynamicTypeReader (type), false);
752 TypeSpec CreateType (MetaType type, DynamicTypeReader dtype, bool canImportBaseType)
754 TypeSpec declaring_type;
755 if (type.IsNested && !type.IsGenericParameter)
756 declaring_type = CreateType (type.DeclaringType, new DynamicTypeReader (type.DeclaringType), true);
758 declaring_type = null;
760 return CreateType (type, declaring_type, dtype, canImportBaseType);
763 protected TypeSpec CreateType (MetaType type, TypeSpec declaringType, DynamicTypeReader dtype, bool canImportBaseType)
766 if (import_cache.TryGetValue (type, out spec)) {
767 if (spec.BuiltinType == BuiltinTypeSpec.Type.Object) {
768 if (dtype.IsDynamicObject ())
769 return module.Compiler.BuiltinTypes.Dynamic;
774 if (!spec.IsGeneric || type.IsGenericTypeDefinition)
777 if (!dtype.HasDynamicAttribute ())
780 // We've found same object in the cache but this one has a dynamic custom attribute
781 // and it's most likely dynamic version of same type IFoo<object> agains IFoo<dynamic>
782 // Do type resolve process again in that case
784 // TODO: Handle cases where they still unify
787 if (IsMissingType (type)) {
788 spec = new TypeSpec (MemberKind.MissingType, declaringType, new ImportedTypeDefinition (type, this), type, Modifiers.PUBLIC);
789 spec.MemberCache = MemberCache.Empty;
790 import_cache.Add (type, spec);
794 if (type.IsGenericType && !type.IsGenericTypeDefinition) {
795 var type_def = type.GetGenericTypeDefinition ();
797 // Generic type definition can also be forwarded
798 if (compiled_types.TryGetValue (type_def, out spec))
801 var targs = CreateGenericArguments (0, type.GetGenericArguments (), dtype);
804 if (declaringType == null) {
805 // Simple case, no nesting
806 spec = CreateType (type_def, null, new DynamicTypeReader (), canImportBaseType);
807 spec = spec.MakeGenericType (module, targs);
810 // Nested type case, converting .NET types like
811 // A`1.B`1.C`1<int, long, string> to typespec like
812 // A<int>.B<long>.C<string>
814 var nested_hierarchy = new List<TypeSpec> ();
815 while (declaringType.IsNested) {
816 nested_hierarchy.Add (declaringType);
817 declaringType = declaringType.DeclaringType;
821 if (declaringType.Arity > 0) {
822 spec = declaringType.MakeGenericType (module, targs.Skip (targs_pos).Take (declaringType.Arity).ToArray ());
823 targs_pos = spec.Arity;
825 spec = declaringType;
828 for (int i = nested_hierarchy.Count; i != 0; --i) {
829 var t = nested_hierarchy [i - 1];
830 if (t.Kind == MemberKind.MissingType)
833 spec = MemberCache.FindNestedType (spec, t.Name, t.Arity, false);
836 spec = spec.MakeGenericType (module, targs.Skip (targs_pos).Take (spec.Arity).ToArray ());
837 targs_pos += t.Arity;
841 if (spec.Kind == MemberKind.MissingType) {
842 spec = new TypeSpec (MemberKind.MissingType, spec, new ImportedTypeDefinition (type_def, this), type_def, Modifiers.PUBLIC);
843 spec.MemberCache = MemberCache.Empty;
845 if ((type_def.Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate && IgnorePrivateMembers)
848 string name = type.Name;
849 int index = name.IndexOf ('`');
851 name = name.Substring (0, index);
853 spec = MemberCache.FindNestedType (spec, name, targs.Length - targs_pos, false);
855 if (spec.Arity > 0) {
856 spec = spec.MakeGenericType (module, targs.Skip (targs_pos).ToArray ());
861 // Don't add generic type with dynamic arguments, they can interfere with same type
862 // using object type arguments
863 if (!spec.HasDynamicElement) {
865 // Add to reading cache to speed up reading
866 if (!import_cache.ContainsKey (type))
867 import_cache.Add (type, spec);
876 var ma = type.Attributes;
877 switch (ma & TypeAttributes.VisibilityMask) {
878 case TypeAttributes.Public:
879 case TypeAttributes.NestedPublic:
880 mod = Modifiers.PUBLIC;
882 case TypeAttributes.NestedPrivate:
883 mod = Modifiers.PRIVATE;
885 case TypeAttributes.NestedFamily:
886 mod = Modifiers.PROTECTED;
888 case TypeAttributes.NestedFamORAssem:
889 mod = Modifiers.PROTECTED | Modifiers.INTERNAL;
892 mod = Modifiers.INTERNAL;
896 if ((ma & TypeAttributes.Interface) != 0) {
897 kind = MemberKind.Interface;
898 } else if (type.IsGenericParameter) {
899 kind = MemberKind.TypeParameter;
901 var base_type = type.BaseType;
902 if (base_type == null || (ma & TypeAttributes.Abstract) != 0) {
903 kind = MemberKind.Class;
905 kind = DetermineKindFromBaseType (base_type);
906 if (kind == MemberKind.Struct || kind == MemberKind.Delegate) {
907 mod |= Modifiers.SEALED;
911 if (kind == MemberKind.Class) {
912 if ((ma & TypeAttributes.Sealed) != 0) {
913 if ((ma & TypeAttributes.Abstract) != 0)
914 mod |= Modifiers.STATIC;
916 mod |= Modifiers.SEALED;
917 } else if ((ma & TypeAttributes.Abstract) != 0) {
918 mod |= Modifiers.ABSTRACT;
923 var definition = new ImportedTypeDefinition (type, this);
926 if (kind == MemberKind.Enum) {
927 const BindingFlags underlying_member = BindingFlags.DeclaredOnly |
928 BindingFlags.Instance |
929 BindingFlags.Public | BindingFlags.NonPublic;
931 var type_members = type.GetFields (underlying_member);
932 foreach (var type_member in type_members) {
933 spec = new EnumSpec (declaringType, definition, CreateType (type_member.FieldType), type, mod);
938 kind = MemberKind.Class;
940 } else if (kind == MemberKind.TypeParameter) {
941 spec = CreateTypeParameter (type, declaringType);
942 } else if (type.IsGenericTypeDefinition) {
943 definition.TypeParameters = CreateGenericParameters (type, declaringType);
944 } else if (compiled_types.TryGetValue (type, out pt)) {
946 // Same type was found in inside compiled types. It's
947 // either build-in type or forward referenced typed
948 // which point into just compiled assembly.
951 BuiltinTypeSpec bts = pt as BuiltinTypeSpec;
953 bts.SetDefinition (definition, type, mod);
957 spec = new TypeSpec (kind, declaringType, definition, type, mod);
959 import_cache.Add (type, spec);
961 if (kind == MemberKind.TypeParameter) {
962 if (canImportBaseType)
963 ImportTypeParameterTypeConstraints ((TypeParameterSpec) spec, type);
969 // Two stage setup as the base type can be inflated declaring type or
970 // another nested type inside same declaring type which has not been
971 // loaded, therefore we can import a base type of nested types once
972 // the types have been imported
974 if (canImportBaseType)
975 ImportTypeBase (spec, type);
980 public IAssemblyDefinition GetAssemblyDefinition (Assembly assembly)
982 IAssemblyDefinition found;
983 if (!assembly_2_definition.TryGetValue (assembly, out found)) {
985 // This can happen in dynamic context only
986 var def = new ImportedAssemblyDefinition (assembly);
987 assembly_2_definition.Add (assembly, def);
988 def.ReadAttributes ();
995 public ImportedAssemblyDefinition GetImportedAssemblyDefinition (AssemblyName assemblyName)
997 foreach (var a in Assemblies) {
998 var ia = a as ImportedAssemblyDefinition;
1002 if (a.Name == assemblyName.Name)
1010 public void ImportTypeBase (MetaType type)
1012 TypeSpec spec = import_cache[type];
1014 ImportTypeBase (spec, type);
1017 TypeParameterSpec CreateTypeParameter (MetaType type, TypeSpec declaringType)
1020 switch (type.GenericParameterAttributes & GenericParameterAttributes.VarianceMask) {
1021 case GenericParameterAttributes.Covariant:
1022 variance = Variance.Covariant;
1024 case GenericParameterAttributes.Contravariant:
1025 variance = Variance.Contravariant;
1028 variance = Variance.None;
1032 SpecialConstraint special = SpecialConstraint.None;
1033 var import_special = type.GenericParameterAttributes & GenericParameterAttributes.SpecialConstraintMask;
1035 if ((import_special & GenericParameterAttributes.NotNullableValueTypeConstraint) != 0) {
1036 special |= SpecialConstraint.Struct;
1037 } else if ((import_special & GenericParameterAttributes.DefaultConstructorConstraint) != 0) {
1038 special = SpecialConstraint.Constructor;
1041 if ((import_special & GenericParameterAttributes.ReferenceTypeConstraint) != 0) {
1042 special |= SpecialConstraint.Class;
1045 TypeParameterSpec spec;
1046 var def = new ImportedTypeParameterDefinition (type, this);
1047 if (type.DeclaringMethod != null) {
1048 spec = new TypeParameterSpec (type.GenericParameterPosition, def, special, variance, type);
1050 spec = new TypeParameterSpec (declaringType, type.GenericParameterPosition, def, special, variance, type);
1057 // Test for a custom attribute type match. Custom attributes are not really predefined globaly
1058 // they can be assembly specific therefore we do check based on names only
1060 public static bool HasAttribute (IList<CustomAttributeData> attributesData, string attrName, string attrNamespace)
1062 if (attributesData.Count == 0)
1065 foreach (var attr in attributesData) {
1066 var dt = attr.Constructor.DeclaringType;
1067 if (dt.Name == attrName && dt.Namespace == attrNamespace)
1074 void ImportTypeBase (TypeSpec spec, MetaType type)
1076 if (spec.Kind == MemberKind.Interface)
1077 spec.BaseType = module.Compiler.BuiltinTypes.Object;
1078 else if (type.BaseType != null) {
1080 if (!IsMissingType (type.BaseType) && type.BaseType.IsGenericType)
1081 base_type = CreateType (type.BaseType, new DynamicTypeReader (type), true);
1083 base_type = CreateType (type.BaseType);
1085 spec.BaseType = base_type;
1088 if (spec.MemberDefinition.TypeParametersCount > 0) {
1089 foreach (var tp in spec.MemberDefinition.TypeParameters) {
1090 ImportTypeParameterTypeConstraints (tp, tp.GetMetaInfo ());
1095 public void ImportTypes (MetaType[] types, Namespace targetNamespace, bool importExtensionTypes)
1097 Namespace ns = targetNamespace;
1098 string prev_namespace = null;
1099 foreach (var t in types) {
1103 // Be careful not to trigger full parent type loading
1104 if (t.MemberType == MemberTypes.NestedType)
1107 if (t.Name[0] == '<')
1110 var it = CreateType (t, null, new DynamicTypeReader (t), true);
1114 if (prev_namespace != t.Namespace) {
1115 ns = t.Namespace == null ? targetNamespace : targetNamespace.GetNamespace (t.Namespace, true);
1116 prev_namespace = t.Namespace;
1119 // Cannot rely on assembly level Extension attribute or static modifier because they
1120 // are not followed by other compilers (e.g. F#).
1121 if (it.IsClass && it.Arity == 0 && importExtensionTypes &&
1122 HasAttribute (CustomAttributeData.GetCustomAttributes (t), "ExtensionAttribute", CompilerServicesNamespace)) {
1123 it.SetExtensionMethodContainer ();
1126 ns.AddType (module, it);
1130 void ImportTypeParameterTypeConstraints (TypeParameterSpec spec, MetaType type)
1132 var constraints = type.GetGenericParameterConstraints ();
1133 List<TypeSpec> tparams = null;
1134 foreach (var ct in constraints) {
1135 if (ct.IsGenericParameter) {
1136 if (tparams == null)
1137 tparams = new List<TypeSpec> ();
1139 tparams.Add (CreateType (ct));
1143 var constraint_type = CreateType (ct);
1144 if (constraint_type.IsClass) {
1145 spec.BaseType = constraint_type;
1149 spec.AddInterface (constraint_type);
1152 if (spec.BaseType == null)
1153 spec.BaseType = module.Compiler.BuiltinTypes.Object;
1155 if (tparams != null)
1156 spec.TypeArguments = tparams.ToArray ();
1159 Constant ImportConstant (object value)
1162 // Get type of underlying value as int constant can be used for object
1163 // parameter type. This is not allowed in C# but other languages can do that
1165 var types = module.Compiler.BuiltinTypes;
1166 switch (System.Type.GetTypeCode (value.GetType ())) {
1167 case TypeCode.Boolean:
1168 return new BoolConstant (types, (bool) value, Location.Null);
1170 return new ByteConstant (types, (byte) value, Location.Null);
1172 return new CharConstant (types, (char) value, Location.Null);
1173 case TypeCode.Decimal:
1174 return new DecimalConstant (types, (decimal) value, Location.Null);
1175 case TypeCode.Double:
1176 return new DoubleConstant (types, (double) value, Location.Null);
1177 case TypeCode.Int16:
1178 return new ShortConstant (types, (short) value, Location.Null);
1179 case TypeCode.Int32:
1180 return new IntConstant (types, (int) value, Location.Null);
1181 case TypeCode.Int64:
1182 return new LongConstant (types, (long) value, Location.Null);
1183 case TypeCode.SByte:
1184 return new SByteConstant (types, (sbyte) value, Location.Null);
1185 case TypeCode.Single:
1186 return new FloatConstant (types, (float) value, Location.Null);
1187 case TypeCode.String:
1188 return new StringConstant (types, (string) value, Location.Null);
1189 case TypeCode.UInt16:
1190 return new UShortConstant (types, (ushort) value, Location.Null);
1191 case TypeCode.UInt32:
1192 return new UIntConstant (types, (uint) value, Location.Null);
1193 case TypeCode.UInt64:
1194 return new ULongConstant (types, (ulong) value, Location.Null);
1197 throw new NotImplementedException (value.GetType ().ToString ());
1200 public TypeSpec ImportType (MetaType type)
1202 return ImportType (type, new DynamicTypeReader (type), null);
1205 TypeSpec ImportType (MetaType type, DynamicTypeReader dtype, TypeSpec currentType)
1207 if (type.HasElementType) {
1208 var element = type.GetElementType ();
1210 var spec = ImportType (element, dtype, currentType);
1213 return ArrayContainer.MakeType (module, spec, type.GetArrayRank ());
1215 return ReferenceContainer.MakeType (module, spec);
1217 return PointerContainer.MakeType (module, spec);
1219 throw new NotImplementedException ("Unknown element type " + type.ToString ());
1222 TypeSpec compiled_type;
1223 if (compiled_types.TryGetValue (type, out compiled_type)) {
1224 if (compiled_type.BuiltinType == BuiltinTypeSpec.Type.Object && dtype.IsDynamicObject ())
1225 return module.Compiler.BuiltinTypes.Dynamic;
1227 compiled_type = CreateType (type, dtype, true);
1230 if (currentType == compiled_type && currentType?.IsGeneric == true) {
1232 // Inflates current type to match behaviour of TypeDefinition::CurrentType used by compiled types
1234 var targs = compiled_type.MemberDefinition.TypeParameters;
1235 compiled_type = compiled_type.MakeGenericType (module, targs);
1238 return compiled_type;
1241 static bool IsMissingType (MetaType type)
1244 return type.__IsMissing;
1251 // Decimal constants cannot be encoded in the constant blob, and thus are marked
1252 // as IsInitOnly ('readonly' in C# parlance). We get its value from the
1253 // DecimalConstantAttribute metadata.
1255 Constant ReadDecimalConstant (IList<CustomAttributeData> attrs)
1257 if (attrs.Count == 0)
1260 foreach (var ca in attrs) {
1261 var dt = ca.Constructor.DeclaringType;
1262 if (dt.Name != "DecimalConstantAttribute" || dt.Namespace != CompilerServicesNamespace)
1265 var value = new decimal (
1266 (int) (uint) ca.ConstructorArguments[4].Value,
1267 (int) (uint) ca.ConstructorArguments[3].Value,
1268 (int) (uint) ca.ConstructorArguments[2].Value,
1269 (byte) ca.ConstructorArguments[1].Value != 0,
1270 (byte) ca.ConstructorArguments[0].Value);
1272 return new DecimalConstant (module.Compiler.BuiltinTypes, value, Location.Null);
1278 static Modifiers ReadMethodModifiers (MethodBase mb, TypeSpec declaringType)
1281 var ma = mb.Attributes;
1282 switch (ma & MethodAttributes.MemberAccessMask) {
1283 case MethodAttributes.Public:
1284 mod = Modifiers.PUBLIC;
1286 case MethodAttributes.Assembly:
1287 mod = Modifiers.INTERNAL;
1289 case MethodAttributes.Family:
1290 mod = Modifiers.PROTECTED;
1292 case MethodAttributes.FamORAssem:
1293 mod = Modifiers.PROTECTED | Modifiers.INTERNAL;
1296 mod = Modifiers.PRIVATE;
1300 if ((ma & MethodAttributes.Static) != 0) {
1301 mod |= Modifiers.STATIC;
1304 if ((ma & MethodAttributes.Abstract) != 0 && declaringType.IsClass) {
1305 mod |= Modifiers.ABSTRACT;
1309 // It can be sealed and override
1310 if ((ma & MethodAttributes.Final) != 0)
1311 mod |= Modifiers.SEALED;
1313 if ((ma & MethodAttributes.Virtual) != 0) {
1314 // Not every member can be detected based on MethodAttribute, we
1315 // set virtual or non-virtual only when we are certain. Further checks
1316 // to really find out what `virtual' means for this member are done
1318 if ((ma & MethodAttributes.NewSlot) != 0) {
1319 if ((mod & Modifiers.SEALED) != 0) {
1320 mod &= ~Modifiers.SEALED;
1322 mod |= Modifiers.VIRTUAL;
1325 mod |= Modifiers.OVERRIDE;
1333 abstract class ImportedDefinition : IMemberDefinition
1335 protected class AttributesBag
1337 public static readonly AttributesBag Default = new AttributesBag ();
1339 public AttributeUsageAttribute AttributeUsage;
1340 public ObsoleteAttribute Obsolete;
1341 public string[] Conditionals;
1342 public string DefaultIndexerName;
1343 public bool? CLSAttributeValue;
1344 public TypeSpec CoClass;
1346 static bool HasMissingType (ConstructorInfo ctor)
1350 // Mimic odd csc behaviour where missing type on predefined
1351 // attributes means the attribute is silently ignored. This can
1352 // happen with PCL facades
1354 foreach (var p in ctor.GetParameters ()) {
1355 if (p.ParameterType.__ContainsMissingType)
1363 public static AttributesBag Read (MemberInfo mi, MetadataImporter importer)
1365 AttributesBag bag = null;
1366 List<string> conditionals = null;
1368 // It should not throw any loading exception
1369 IList<CustomAttributeData> attrs = CustomAttributeData.GetCustomAttributes (mi);
1371 foreach (var a in attrs) {
1372 var dt = a.Constructor.DeclaringType;
1373 string name = dt.Name;
1374 if (name == "ObsoleteAttribute") {
1375 if (dt.Namespace != "System")
1379 bag = new AttributesBag ();
1381 var args = a.ConstructorArguments;
1383 if (args.Count == 1) {
1384 bag.Obsolete = new ObsoleteAttribute ((string) args[0].Value);
1385 } else if (args.Count == 2) {
1386 bag.Obsolete = new ObsoleteAttribute ((string) args[0].Value, (bool) args[1].Value);
1388 bag.Obsolete = new ObsoleteAttribute ();
1394 if (name == "ConditionalAttribute") {
1395 if (dt.Namespace != "System.Diagnostics")
1399 bag = new AttributesBag ();
1401 if (conditionals == null)
1402 conditionals = new List<string> (2);
1404 conditionals.Add ((string) a.ConstructorArguments[0].Value);
1408 if (name == "CLSCompliantAttribute") {
1409 if (dt.Namespace != "System")
1413 bag = new AttributesBag ();
1415 bag.CLSAttributeValue = (bool) a.ConstructorArguments[0].Value;
1419 // Type only attributes
1420 if (mi.MemberType == MemberTypes.TypeInfo || mi.MemberType == MemberTypes.NestedType) {
1421 if (name == "DefaultMemberAttribute") {
1422 if (dt.Namespace != "System.Reflection")
1426 bag = new AttributesBag ();
1428 bag.DefaultIndexerName = (string) a.ConstructorArguments[0].Value;
1432 if (name == "AttributeUsageAttribute") {
1433 if (dt.Namespace != "System")
1436 if (HasMissingType (a.Constructor))
1440 bag = new AttributesBag ();
1442 bag.AttributeUsage = new AttributeUsageAttribute ((AttributeTargets) a.ConstructorArguments[0].Value);
1443 foreach (var named in a.NamedArguments) {
1444 if (named.MemberInfo.Name == "AllowMultiple")
1445 bag.AttributeUsage.AllowMultiple = (bool) named.TypedValue.Value;
1446 else if (named.MemberInfo.Name == "Inherited")
1447 bag.AttributeUsage.Inherited = (bool) named.TypedValue.Value;
1452 // Interface only attribute
1453 if (name == "CoClassAttribute") {
1454 if (dt.Namespace != "System.Runtime.InteropServices")
1457 if (HasMissingType (a.Constructor))
1461 bag = new AttributesBag ();
1463 bag.CoClass = importer.ImportType ((MetaType) a.ConstructorArguments[0].Value);
1472 if (conditionals != null)
1473 bag.Conditionals = conditionals.ToArray ();
1479 protected readonly MemberInfo provider;
1480 protected AttributesBag cattrs;
1481 protected readonly MetadataImporter importer;
1483 protected ImportedDefinition (MemberInfo provider, MetadataImporter importer)
1485 this.provider = provider;
1486 this.importer = importer;
1491 public bool IsImported {
1497 public virtual string Name {
1499 return provider.Name;
1505 public string[] ConditionalConditions ()
1510 return cattrs.Conditionals;
1513 public ObsoleteAttribute GetAttributeObsolete ()
1518 return cattrs.Obsolete;
1521 public bool? CLSAttributeValue {
1526 return cattrs.CLSAttributeValue;
1530 protected void ReadAttributes ()
1532 cattrs = AttributesBag.Read (provider, importer);
1535 public void SetIsAssigned ()
1537 // Unused for imported members
1540 public void SetIsUsed ()
1542 // Unused for imported members
1546 public class ImportedModuleDefinition
1548 readonly Module module;
1551 public ImportedModuleDefinition (Module module)
1553 this.module = module;
1558 public bool IsCLSCompliant {
1560 return cls_compliant;
1564 public string Name {
1572 public void ReadAttributes ()
1574 IList<CustomAttributeData> attrs = CustomAttributeData.GetCustomAttributes (module);
1576 foreach (var a in attrs) {
1577 var dt = a.Constructor.DeclaringType;
1578 if (dt.Name == "CLSCompliantAttribute") {
1579 if (dt.Namespace != "System")
1582 cls_compliant = (bool) a.ConstructorArguments[0].Value;
1589 // Reads assembly attributes which where attached to a special type because
1590 // module does have assembly manifest
1592 public List<Attribute> ReadAssemblyAttributes ()
1594 var t = module.GetType (AssemblyAttributesPlaceholder.GetGeneratedName (Name));
1598 var field = t.GetField (AssemblyAttributesPlaceholder.AssemblyFieldName, BindingFlags.NonPublic | BindingFlags.Static);
1602 // TODO: implement, the idea is to fabricate specil Attribute class and
1603 // add it to OptAttributes before resolving the source code attributes
1604 // Need to build module location as well for correct error reporting
1606 //var assembly_attributes = CustomAttributeData.GetCustomAttributes (field);
1607 //var attrs = new List<Attribute> (assembly_attributes.Count);
1608 //foreach (var a in assembly_attributes)
1610 // var type = metaImporter.ImportType (a.Constructor.DeclaringType);
1611 // var ctor = metaImporter.CreateMethod (a.Constructor, type);
1613 // foreach (var carg in a.ConstructorArguments) {
1617 // attrs.Add (new Attribute ("assembly", ctor, null, Location.Null, true));
1624 public class ImportedAssemblyDefinition : IAssemblyDefinition
1626 readonly Assembly assembly;
1627 readonly AssemblyName aname;
1630 List<AssemblyName> internals_visible_to;
1631 Dictionary<IAssemblyDefinition, AssemblyName> internals_visible_to_cache;
1633 public ImportedAssemblyDefinition (Assembly assembly)
1635 this.assembly = assembly;
1636 this.aname = assembly.GetName ();
1641 public Assembly Assembly {
1647 public string FullName {
1649 return aname.FullName;
1653 public bool HasStrongName {
1655 return aname.GetPublicKey ().Length != 0;
1659 public bool IsMissing {
1662 return assembly.__IsMissing;
1669 public bool IsCLSCompliant {
1671 return cls_compliant;
1675 public string Location {
1677 return assembly.Location;
1681 public string Name {
1689 public byte[] GetPublicKeyToken ()
1691 return aname.GetPublicKeyToken ();
1694 public AssemblyName GetAssemblyVisibleToName (IAssemblyDefinition assembly)
1696 return internals_visible_to_cache [assembly];
1699 public bool IsFriendAssemblyTo (IAssemblyDefinition assembly)
1701 if (internals_visible_to == null)
1704 AssemblyName is_visible = null;
1705 if (internals_visible_to_cache == null) {
1706 internals_visible_to_cache = new Dictionary<IAssemblyDefinition, AssemblyName> ();
1708 if (internals_visible_to_cache.TryGetValue (assembly, out is_visible))
1709 return is_visible != null;
1712 var token = assembly.GetPublicKeyToken ();
1713 if (token != null && token.Length == 0)
1716 foreach (var internals in internals_visible_to) {
1717 if (!String.Equals(internals.Name, assembly.Name, StringComparison.OrdinalIgnoreCase))
1720 if (token == null && assembly is AssemblyDefinition) {
1721 is_visible = internals;
1725 if (!ArrayComparer.IsEqual (token, internals.GetPublicKeyToken ()))
1728 is_visible = internals;
1732 internals_visible_to_cache.Add (assembly, is_visible);
1733 return is_visible != null;
1736 public void ReadAttributes ()
1739 if (assembly.__IsMissing)
1743 IList<CustomAttributeData> attrs = CustomAttributeData.GetCustomAttributes (assembly);
1745 foreach (var a in attrs) {
1746 var dt = a.Constructor.DeclaringType;
1748 if (name == "CLSCompliantAttribute") {
1749 if (dt.Namespace == "System") {
1750 cls_compliant = (bool) a.ConstructorArguments[0].Value;
1755 if (name == "InternalsVisibleToAttribute") {
1756 if (dt.Namespace != MetadataImporter.CompilerServicesNamespace)
1759 string s = a.ConstructorArguments[0].Value as string;
1765 an = new AssemblyName (s);
1766 } catch (FileLoadException) {
1767 // Invalid assembly name reuses FileLoadException
1771 if (internals_visible_to == null)
1772 internals_visible_to = new List<AssemblyName> ();
1774 internals_visible_to.Add (an);
1780 public override string ToString ()
1786 class ImportedMemberDefinition : ImportedDefinition
1788 readonly TypeSpec type;
1790 public ImportedMemberDefinition (MemberInfo member, TypeSpec type, MetadataImporter importer)
1791 : base (member, importer)
1798 public TypeSpec MemberType {
1807 class ImportedParameterMemberDefinition : ImportedMemberDefinition, IParametersMember
1809 readonly AParametersCollection parameters;
1811 protected ImportedParameterMemberDefinition (MethodBase provider, TypeSpec type, AParametersCollection parameters, MetadataImporter importer)
1812 : base (provider, type, importer)
1814 this.parameters = parameters;
1817 public ImportedParameterMemberDefinition (PropertyInfo provider, TypeSpec type, AParametersCollection parameters, MetadataImporter importer)
1818 : base (provider, type, importer)
1820 this.parameters = parameters;
1825 public AParametersCollection Parameters {
1834 class ImportedMethodDefinition : ImportedParameterMemberDefinition, IMethodDefinition
1836 public ImportedMethodDefinition (MethodBase provider, TypeSpec type, AParametersCollection parameters, MetadataImporter importer)
1837 : base (provider, type, parameters, importer)
1841 MethodBase IMethodDefinition.Metadata {
1843 return (MethodBase) provider;
1848 class ImportedGenericMethodDefinition : ImportedMethodDefinition, IGenericMethodDefinition
1850 readonly TypeParameterSpec[] tparams;
1852 public ImportedGenericMethodDefinition (MethodInfo provider, TypeSpec type, AParametersCollection parameters, TypeParameterSpec[] tparams, MetadataImporter importer)
1853 : base (provider, type, parameters, importer)
1855 this.tparams = tparams;
1860 public TypeParameterSpec[] TypeParameters {
1866 public int TypeParametersCount {
1868 return tparams.Length;
1875 class ImportedTypeDefinition : ImportedDefinition, ITypeDefinition
1877 TypeParameterSpec[] tparams;
1880 public ImportedTypeDefinition (MetaType type, MetadataImporter importer)
1881 : base (type, importer)
1887 public IAssemblyDefinition DeclaringAssembly {
1889 return importer.GetAssemblyDefinition (provider.Module.Assembly);
1893 bool ITypeDefinition.IsComImport {
1895 return ((MetaType) provider).IsImport;
1900 bool ITypeDefinition.IsPartial {
1906 bool ITypeDefinition.IsTypeForwarder {
1909 return ((MetaType) provider).__IsTypeForwarder;
1916 bool ITypeDefinition.IsCyclicTypeForwarder {
1919 return ((MetaType) provider).__IsCyclicTypeForwarder;
1926 public override string Name {
1930 if (tparams != null) {
1931 int arity_start = name.IndexOf ('`');
1932 if (arity_start > 0)
1933 name = name.Substring (0, arity_start);
1941 public string Namespace {
1943 return ((MetaType) provider).Namespace;
1947 public int TypeParametersCount {
1949 return tparams == null ? 0 : tparams.Length;
1953 public TypeParameterSpec[] TypeParameters {
1964 public void DefineInterfaces (TypeSpec spec)
1966 var type = (MetaType) provider;
1969 ifaces = type.__GetDeclaredInterfaces ();
1970 if (ifaces.Length != 0) {
1971 foreach (var iface in ifaces) {
1972 var it = importer.CreateType (iface);
1976 spec.AddInterfaceDefined (it);
1978 // Unfortunately not all languages expand inherited interfaces
1979 var bifaces = it.Interfaces;
1980 if (bifaces != null) {
1981 foreach (var biface in bifaces) {
1982 spec.AddInterfaceDefined (biface);
1989 // It's impossible to get declared interfaces only using System.Reflection
1990 // hence we need to mimic the behavior with ikvm-reflection too to keep
1991 // our type look-up logic same
1993 if (spec.BaseType != null) {
1994 var bifaces = spec.BaseType.Interfaces;
1995 if (bifaces != null) {
1997 // Before adding base class interfaces close defined interfaces
1998 // on type parameter
2000 var tp = spec as TypeParameterSpec;
2001 if (tp != null && tp.InterfacesDefined == null) {
2002 tp.InterfacesDefined = TypeSpec.EmptyTypes;
2005 foreach (var iface in bifaces)
2006 spec.AddInterfaceDefined (iface);
2010 ifaces = type.GetInterfaces ();
2012 if (ifaces.Length > 0) {
2013 foreach (var iface in ifaces) {
2014 spec.AddInterface (importer.CreateType (iface));
2021 public static void Error_MissingDependency (IMemberContext ctx, List<MissingTypeSpecReference> missing, Location loc)
2024 // Report details about missing type and most likely cause of the problem.
2025 // csc used to reports 1683, 1684 (now 7069) as warnings but we report them only when used
2026 // or referenced from the user core in which case compilation error has to
2027 // be reported because compiler cannot continue anyway
2030 var report = ctx.Module.Compiler.Report;
2032 for (int i = 0; i < missing.Count; ++i) {
2033 var t = missing [i].Type;
2036 // Report missing types only once
2038 if (report.Printer.MissingTypeReported (t.MemberDefinition))
2041 string name = t.GetSignatureForError ();
2043 var caller = missing[i].Caller;
2044 if (caller.Kind != MemberKind.MissingType)
2045 report.SymbolRelatedToPreviousError (caller);
2047 var definition = t.MemberDefinition;
2048 if (definition.DeclaringAssembly == ctx.Module.DeclaringAssembly) {
2049 report.Error (1683, loc,
2050 "Reference to type `{0}' claims it is defined in this assembly, but it is not defined in source or any added modules",
2052 } else if (definition.DeclaringAssembly.IsMissing) {
2053 if (definition.IsTypeForwarder) {
2054 report.Error (1070, loc,
2055 "The type `{0}' has been forwarded to an assembly that is not referenced. Consider adding a reference to assembly `{1}'",
2056 name, definition.DeclaringAssembly.FullName);
2058 report.Error (12, loc,
2059 "The type `{0}' is defined in an assembly that is not referenced. Consider adding a reference to assembly `{1}'",
2060 name, definition.DeclaringAssembly.FullName);
2062 } else if (definition.IsTypeForwarder) {
2063 report.Error (731, loc, "The type forwarder for type `{0}' in assembly `{1}' has circular dependency",
2064 name, definition.DeclaringAssembly.FullName);
2066 report.Error (7069, loc,
2067 "Reference to type `{0}' claims it is defined assembly `{1}', but it could not be found",
2068 name, t.MemberDefinition.DeclaringAssembly.FullName);
2073 public TypeSpec GetAttributeCoClass ()
2078 return cattrs.CoClass;
2081 public string GetAttributeDefaultMember ()
2086 return cattrs.DefaultIndexerName;
2089 public AttributeUsageAttribute GetAttributeUsage (PredefinedAttribute pa)
2094 return cattrs.AttributeUsage;
2097 bool ITypeDefinition.IsInternalAsPublic (IAssemblyDefinition assembly)
2099 var a = importer.GetAssemblyDefinition (provider.Module.Assembly);
2100 return a == assembly || a.IsFriendAssemblyTo (assembly);
2103 public void LoadMembers (TypeSpec declaringType, bool onlyTypes, ref MemberCache cache)
2106 // Not interested in members of nested private types unless the importer needs them
2108 if (declaringType.IsPrivate && importer.IgnorePrivateMembers) {
2109 cache = MemberCache.Empty;
2113 var loading_type = (MetaType) provider;
2114 const BindingFlags all_members = BindingFlags.DeclaredOnly |
2115 BindingFlags.Static | BindingFlags.Instance |
2116 BindingFlags.Public | BindingFlags.NonPublic;
2118 const MethodAttributes explicit_impl = MethodAttributes.NewSlot |
2119 MethodAttributes.Virtual | MethodAttributes.HideBySig |
2120 MethodAttributes.Final;
2122 Dictionary<MethodBase, MethodSpec> possible_accessors = null;
2123 List<EventSpec> imported_events = null;
2124 EventSpec event_spec;
2125 MemberSpec imported;
2129 all = loading_type.GetMembers (all_members);
2130 } catch (Exception e) {
2131 throw new InternalErrorException (e, "Could not import type `{0}' from `{1}'",
2132 declaringType.GetSignatureForError (), declaringType.MemberDefinition.DeclaringAssembly.FullName);
2135 if (cache == null) {
2136 cache = new MemberCache (all.Length);
2139 // Do the types first as they can be referenced by the members before
2140 // they are found or inflated
2142 foreach (var member in all) {
2143 if (member.MemberType != MemberTypes.NestedType)
2146 var t = (MetaType) member;
2148 // Ignore compiler generated types, mostly lambda containers
2149 if ((t.Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate && importer.IgnorePrivateMembers)
2153 imported = importer.CreateNestedType (t, declaringType);
2154 } catch (Exception e) {
2155 throw new InternalErrorException (e, "Could not import nested type `{0}' from `{1}'",
2156 t.FullName, declaringType.MemberDefinition.DeclaringAssembly.FullName);
2159 cache.AddMemberImported (imported);
2162 foreach (var member in all) {
2163 if (member.MemberType != MemberTypes.NestedType)
2166 var t = (MetaType) member;
2168 if ((t.Attributes & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPrivate && importer.IgnorePrivateMembers)
2171 importer.ImportTypeBase (t);
2176 // Load base interfaces first to minic behaviour of compiled members
2178 if (declaringType.IsInterface && declaringType.Interfaces != null) {
2179 foreach (var iface in declaringType.Interfaces) {
2180 cache.AddInterface (iface);
2186 // The logic here requires methods to be returned first which seems to work for both Mono and .NET
2188 foreach (var member in all) {
2189 switch (member.MemberType) {
2190 case MemberTypes.Constructor:
2191 if (declaringType.IsInterface)
2194 goto case MemberTypes.Method;
2195 case MemberTypes.Method:
2196 MethodBase mb = (MethodBase) member;
2197 var attrs = mb.Attributes;
2199 if ((attrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Private) {
2200 if (importer.IgnorePrivateMembers)
2203 // Ignore explicitly implemented members
2204 if ((attrs & explicit_impl) == explicit_impl)
2207 // Ignore compiler generated methods
2208 if (MetadataImporter.HasAttribute (CustomAttributeData.GetCustomAttributes (mb), "CompilerGeneratedAttribute", MetadataImporter.CompilerServicesNamespace))
2212 imported = importer.CreateMethod (mb, declaringType);
2213 if (imported.Kind == MemberKind.Method && !imported.IsGeneric) {
2214 if (possible_accessors == null)
2215 possible_accessors = new Dictionary<MethodBase, MethodSpec> (ReferenceEquality<MethodBase>.Default);
2217 // There are no metadata rules for accessors, we have to consider any method as possible candidate
2218 possible_accessors.Add (mb, (MethodSpec) imported);
2222 case MemberTypes.Property:
2223 if (possible_accessors == null)
2226 var p = (PropertyInfo) member;
2228 // Links possible accessors with property
2230 MethodSpec get, set;
2231 m = p.GetGetMethod (true);
2232 if (m == null || !possible_accessors.TryGetValue (m, out get))
2235 m = p.GetSetMethod (true);
2236 if (m == null || !possible_accessors.TryGetValue (m, out set))
2239 // No accessors registered (e.g. explicit implementation)
2240 if (get == null && set == null)
2244 imported = importer.CreateProperty (p, declaringType, get, set);
2245 } catch (Exception ex) {
2246 throw new InternalErrorException (ex, "Could not import property `{0}' inside `{1}'",
2247 p.Name, declaringType.GetSignatureForError ());
2250 if (imported == null)
2254 case MemberTypes.Event:
2255 if (possible_accessors == null)
2258 var e = (EventInfo) member;
2260 // Links accessors with event
2262 MethodSpec add, remove;
2263 m = e.GetAddMethod (true);
2264 if (m == null || !possible_accessors.TryGetValue (m, out add))
2267 m = e.GetRemoveMethod (true);
2268 if (m == null || !possible_accessors.TryGetValue (m, out remove))
2271 // Both accessors are required
2272 if (add == null || remove == null)
2275 event_spec = importer.CreateEvent (e, declaringType, add, remove);
2276 if (!importer.IgnorePrivateMembers) {
2277 if (imported_events == null)
2278 imported_events = new List<EventSpec> ();
2280 imported_events.Add (event_spec);
2283 imported = event_spec;
2285 case MemberTypes.Field:
2286 var fi = (FieldInfo) member;
2288 imported = importer.CreateField (fi, declaringType);
2289 if (imported == null)
2293 // For dynamic binder event has to be fully restored to allow operations
2294 // within the type container to work correctly
2296 if (imported_events != null) {
2297 // The backing event field should be private but it may not
2299 for (i = 0; i < imported_events.Count; ++i) {
2300 var ev = imported_events[i];
2301 if (ev.Name == fi.Name) {
2302 ev.BackingField = (FieldSpec) imported;
2303 imported_events.RemoveAt (i);
2314 case MemberTypes.NestedType:
2315 // Already in the cache from the first pass
2318 throw new NotImplementedException (member.ToString ());
2321 if (imported.IsStatic && declaringType.IsInterface)
2324 cache.AddMemberImported (imported);
2330 class ImportedTypeParameterDefinition : ImportedDefinition, ITypeDefinition
2332 public ImportedTypeParameterDefinition (MetaType type, MetadataImporter importer)
2333 : base (type, importer)
2339 public IAssemblyDefinition DeclaringAssembly {
2341 throw new NotImplementedException ();
2345 bool ITypeDefinition.IsComImport {
2351 bool ITypeDefinition.IsPartial {
2357 bool ITypeDefinition.IsTypeForwarder {
2363 bool ITypeDefinition.IsCyclicTypeForwarder {
2369 public string Namespace {
2375 public int TypeParametersCount {
2381 public TypeParameterSpec[] TypeParameters {
2389 public TypeSpec GetAttributeCoClass ()
2394 public string GetAttributeDefaultMember ()
2396 throw new NotSupportedException ();
2399 public AttributeUsageAttribute GetAttributeUsage (PredefinedAttribute pa)
2401 throw new NotSupportedException ();
2404 bool ITypeDefinition.IsInternalAsPublic (IAssemblyDefinition assembly)
2406 throw new NotImplementedException ();
2409 public void LoadMembers (TypeSpec declaringType, bool onlyTypes, ref MemberCache cache)
2411 throw new NotImplementedException ();