-//\r
-// typemanager.cs: C# type manager\r
-//\r
-// Author: Miguel de Icaza (miguel@gnu.org)\r
-//\r
-// Licensed under the terms of the GNU GPL\r
-//\r
-// (C) 2001 Ximian, Inc (http://www.ximian.com)\r
-//\r
-//\r
-\r
-using System;\r
-using System.Collections;\r
-using System.Reflection;\r
-using System.Reflection.Emit;\r
-\r
-namespace Mono.CSharp {\r
-\r
-public class TypeManager {\r
- //\r
- // A list of core types that the compiler requires or uses\r
- //\r
- static public Type object_type;\r
- static public Type value_type;\r
- static public Type string_type;\r
- static public Type int32_type;\r
- static public Type uint32_type;\r
- static public Type int64_type;\r
- static public Type uint64_type;\r
- static public Type float_type;\r
- static public Type double_type;\r
- static public Type char_type;\r
- static public Type char_ptr_type;\r
- static public Type short_type;\r
- static public Type decimal_type;\r
- static public Type bool_type;\r
- static public Type sbyte_type;\r
- static public Type byte_type;\r
- static public Type ushort_type;\r
- static public Type enum_type;\r
- static public Type delegate_type;\r
- static public Type multicast_delegate_type;\r
- static public Type void_type;\r
- static public Type enumeration_type;\r
- static public Type array_type;\r
- static public Type runtime_handle_type;\r
- static public Type icloneable_type;\r
- static public Type type_type;\r
- static public Type ienumerator_type;\r
- static public Type idisposable_type;\r
- static public Type default_member_type;\r
- static public Type iasyncresult_type;\r
- static public Type asynccallback_type;\r
- static public Type intptr_type;\r
- static public Type monitor_type;\r
- static public Type runtime_field_handle_type;\r
- static public Type attribute_usage_type;\r
- static public Type dllimport_type;\r
- static public Type unverifiable_code_type;\r
- static public Type methodimpl_attr_type;\r
- static public Type marshal_as_attr_type;\r
- static public Type param_array_type;\r
- static public Type void_ptr_type;\r
-\r
- static public Type [] NoTypes;\r
- \r
- //\r
- // Internal, not really used outside\r
- //\r
- Type runtime_helpers_type;\r
- \r
- //\r
- // These methods are called by code generated by the compiler\r
- //\r
- static public MethodInfo string_concat_string_string;\r
- static public MethodInfo string_concat_object_object;\r
- static public MethodInfo string_isinterneted_string;\r
- static public MethodInfo system_type_get_type_from_handle;\r
- static public MethodInfo object_getcurrent_void;\r
- static public MethodInfo bool_movenext_void;\r
- static public MethodInfo void_dispose_void;\r
- static public MethodInfo void_monitor_enter_object;\r
- static public MethodInfo void_monitor_exit_object;\r
- static public MethodInfo void_initializearray_array_fieldhandle;\r
- static public MethodInfo int_getlength_int;\r
- static public MethodInfo delegate_combine_delegate_delegate;\r
- static public MethodInfo delegate_remove_delegate_delegate;\r
- static public MethodInfo int_get_offset_to_string_data;\r
- \r
- //\r
- // The attribute constructors.\r
- //\r
- static public ConstructorInfo cons_param_array_attribute;\r
- \r
- // <remarks>\r
- // Holds the Array of Assemblies that have been loaded\r
- // (either because it is the default or the user used the\r
- // -r command line option)\r
- // </remarks>\r
- Assembly [] assemblies;\r
-\r
- // <remarks>\r
- // Keeps a list of module builders. We used this to do lookups\r
- // on the modulebuilder using GetType -- needed for arrays\r
- // </remarks>\r
- ModuleBuilder [] modules;\r
-\r
- // <remarks>\r
- // This is the type_cache from the assemblies to avoid\r
- // hitting System.Reflection on every lookup.\r
- // </summary>\r
- Hashtable types;\r
-\r
- // <remarks>\r
- // This is used to hotld the corresponding TypeContainer objects\r
- // since we need this in FindMembers\r
- // </remarks>\r
- Hashtable typecontainers;\r
-\r
- // <remarks>\r
- // Keeps track of those types that are defined by the\r
- // user's program\r
- // </remarks>\r
- ArrayList user_types;\r
-\r
- // <remarks>\r
- // Keeps a mapping between TypeBuilders and their TypeContainers\r
- // </remarks>\r
- static PtrHashtable builder_to_container;\r
-\r
- // <remarks>\r
- // Maps MethodBase.RuntimeTypeHandle to a Type array that contains\r
- // the arguments to the method\r
- // </remarks>\r
- static Hashtable method_arguments;\r
-\r
- // <remarks>\r
- // Maybe `method_arguments' should be replaced and only\r
- // method_internal_params should be kept?\r
- // <remarks>\r
- static Hashtable method_internal_params;\r
-\r
- static PtrHashtable builder_to_interface;\r
-\r
- // <remarks>\r
- // Keeps track of delegate types\r
- // </remarks>\r
-\r
- static Hashtable builder_to_delegate;\r
-\r
- // <remarks>\r
- // Keeps track of enum types\r
- // </remarks>\r
-\r
- static Hashtable builder_to_enum;\r
-\r
- // <remarks>\r
- // Keeps track of attribute types\r
- // </remarks>\r
-\r
- static Hashtable builder_to_attr;\r
-\r
- public TypeManager ()\r
- {\r
- assemblies = new Assembly [0];\r
- modules = null;\r
- user_types = new ArrayList ();\r
- types = new Hashtable ();\r
- typecontainers = new Hashtable ();\r
- builder_to_interface = new PtrHashtable ();\r
- builder_to_delegate = new PtrHashtable ();\r
- builder_to_enum = new PtrHashtable ();\r
- builder_to_attr = new PtrHashtable ();\r
- }\r
-\r
- static TypeManager ()\r
- {\r
- method_arguments = new PtrHashtable ();\r
- method_internal_params = new PtrHashtable ();\r
- builder_to_container = new PtrHashtable ();\r
- NoTypes = new Type [0];\r
- }\r
-\r
- public void AddUserType (string name, TypeBuilder t)\r
- {\r
- try {\r
- types.Add (name, t);\r
- user_types.Add (t);\r
- } catch {\r
- Report.Error (-17, "The type `" + name + "' has already been defined");\r
- }\r
- }\r
- \r
- public void AddUserType (string name, TypeBuilder t, TypeContainer tc)\r
- {\r
- AddUserType (name, t);\r
- builder_to_container.Add (t, tc);\r
- typecontainers.Add (name, tc);\r
- }\r
-\r
- public void AddDelegateType (string name, TypeBuilder t, Delegate del)\r
- {\r
- types.Add (name, t);\r
- builder_to_delegate.Add (t, del);\r
- }\r
- \r
- public void AddEnumType (string name, TypeBuilder t, Enum en)\r
- {\r
- types.Add (name, t);\r
- builder_to_enum.Add (t, en);\r
- }\r
-\r
- public void AddUserInterface (string name, TypeBuilder t, Interface i)\r
- {\r
- AddUserType (name, t);\r
- builder_to_interface.Add (t, i);\r
- }\r
-\r
- public void RegisterAttrType (Type t, TypeContainer tc)\r
- {\r
- builder_to_attr.Add (t, tc);\r
- }\r
- \r
- /// <summary>\r
- /// Returns the TypeContainer whose Type is `t' or null if there is no\r
- /// TypeContainer for `t' (ie, the Type comes from a library)\r
- /// </summary>\r
- public static TypeContainer LookupTypeContainer (Type t)\r
- {\r
- return (TypeContainer) builder_to_container [t];\r
- }\r
-\r
- public Interface LookupInterface (Type t)\r
- {\r
- return (Interface) builder_to_interface [t];\r
- }\r
-\r
- public static Delegate LookupDelegate (Type t)\r
- {\r
- return (Delegate) builder_to_delegate [t];\r
- }\r
-\r
- public static Enum LookupEnum (Type t)\r
- {\r
- return (Enum) builder_to_enum [t];\r
- }\r
- \r
- public static TypeContainer LookupAttr (Type t)\r
- {\r
- return (TypeContainer) builder_to_attr [t];\r
- }\r
- \r
- /// <summary>\r
- /// Registers an assembly to load types from.\r
- /// </summary>\r
- public void AddAssembly (Assembly a)\r
- {\r
- int top = assemblies.Length;\r
- Assembly [] n = new Assembly [top + 1];\r
-\r
- assemblies.CopyTo (n, 0);\r
- \r
- n [top] = a;\r
- assemblies = n;\r
- }\r
-\r
- /// <summary>\r
- /// Registers a module builder to lookup types from\r
- /// </summary>\r
- public void AddModule (ModuleBuilder mb)\r
- {\r
- int top = modules != null ? modules.Length : 0;\r
- ModuleBuilder [] n = new ModuleBuilder [top + 1];\r
-\r
- if (modules != null)\r
- modules.CopyTo (n, 0);\r
- n [top] = mb;\r
- modules = n;\r
- }\r
-\r
- /// <summary>\r
- /// Returns the Type associated with @name\r
- /// </summary>\r
- public Type LookupType (string name)\r
- {\r
- Type t;\r
-\r
- //\r
- // First lookup in user defined and cached values\r
- //\r
-\r
- t = (Type) types [name];\r
- if (t != null)\r
- return t;\r
-\r
- foreach (Assembly a in assemblies){\r
- t = a.GetType (name);\r
- if (t != null){\r
- types [name] = t;\r
-\r
- return t;\r
- }\r
- }\r
-\r
- foreach (ModuleBuilder mb in modules) {\r
- t = mb.GetType (name);\r
- if (t != null) {\r
- types [name] = t;\r
- return t;\r
- }\r
- }\r
-\r
- return null;\r
- }\r
-\r
- /// <summary>\r
- /// Returns the C# name of a type if possible, or the full type name otherwise\r
- /// </summary>\r
- static public string CSharpName (Type t)\r
- {\r
- if (t == int32_type)\r
- return "int";\r
- else if (t == uint32_type)\r
- return "uint";\r
- else if (t == int64_type)\r
- return "long";\r
- else if (t == uint64_type)\r
- return "ulong";\r
- else if (t == float_type)\r
- return "float";\r
- else if (t == double_type)\r
- return "double";\r
- else if (t == char_type)\r
- return "char";\r
- else if (t == short_type)\r
- return "short";\r
- else if (t == decimal_type)\r
- return "decimal";\r
- else if (t == bool_type)\r
- return "bool";\r
- else if (t == sbyte_type)\r
- return "sbyte";\r
- else if (t == byte_type)\r
- return "byte";\r
- else if (t == short_type)\r
- return "short";\r
- else if (t == ushort_type)\r
- return "ushort";\r
- else if (t == string_type)\r
- return "string";\r
- else if (t == object_type)\r
- return "object";\r
- else if (t == void_type)\r
- return "void";\r
- else\r
- return t.FullName;\r
- }\r
-\r
- /// <summary>\r
- /// Looks up a type, and aborts if it is not found. This is used\r
- /// by types required by the compiler\r
- /// </summary>\r
- Type CoreLookupType (string name)\r
- {\r
- Type t = LookupType (name);\r
-\r
- if (t == null){\r
- Report.Error (518, "The predefined type `" + name + "' is not defined or imported");\r
- Environment.Exit (0);\r
- }\r
-\r
- return t;\r
- }\r
-\r
- /// <summary>\r
- /// Returns the MethodInfo for a method named `name' defined\r
- /// in type `t' which takes arguments of types `args'\r
- /// </summary>\r
- MethodInfo GetMethod (Type t, string name, Type [] args)\r
- {\r
- MethodInfo mi = t.GetMethod (name, args);\r
-\r
- if (mi == null)\r
- throw new Exception ("Can not find the core function `" + name + "'");\r
-\r
- return mi;\r
- }\r
-\r
- ConstructorInfo GetConstructor (Type t, Type [] args)\r
- {\r
- ConstructorInfo ci = t.GetConstructor (args);\r
-\r
- if (ci == null)\r
- throw new Exception ("Can not find the core constructor for `" + t.FullName + "'");\r
-\r
- return ci;\r
- }\r
- \r
- /// <remarks>\r
- /// The types have to be initialized after the initial\r
- /// population of the type has happened (for example, to\r
- /// bootstrap the corlib.dll\r
- /// </remarks>\r
- public void InitCoreTypes ()\r
- {\r
- object_type = CoreLookupType ("System.Object");\r
- value_type = CoreLookupType ("System.ValueType");\r
- string_type = CoreLookupType ("System.String");\r
- int32_type = CoreLookupType ("System.Int32");\r
- int64_type = CoreLookupType ("System.Int64");\r
- uint32_type = CoreLookupType ("System.UInt32"); \r
- uint64_type = CoreLookupType ("System.UInt64"); \r
- float_type = CoreLookupType ("System.Single");\r
- double_type = CoreLookupType ("System.Double");\r
- byte_type = CoreLookupType ("System.Byte");\r
- sbyte_type = CoreLookupType ("System.SByte");\r
- char_type = CoreLookupType ("System.Char");\r
- char_ptr_type = CoreLookupType ("System.Char*");\r
- short_type = CoreLookupType ("System.Int16");\r
- ushort_type = CoreLookupType ("System.UInt16");\r
- decimal_type = CoreLookupType ("System.Decimal");\r
- bool_type = CoreLookupType ("System.Boolean");\r
- enum_type = CoreLookupType ("System.Enum");\r
-\r
- multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");\r
- delegate_type = CoreLookupType ("System.Delegate");\r
-\r
- array_type = CoreLookupType ("System.Array");\r
- void_type = CoreLookupType ("System.Void");\r
- type_type = CoreLookupType ("System.Type");\r
-\r
- runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");\r
- runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");\r
- default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");\r
- runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");\r
- asynccallback_type = CoreLookupType ("System.AsyncCallback");\r
- iasyncresult_type = CoreLookupType ("System.IAsyncResult");\r
- ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");\r
- idisposable_type = CoreLookupType ("System.IDisposable");\r
- icloneable_type = CoreLookupType ("System.ICloneable");\r
- monitor_type = CoreLookupType ("System.Threading.Monitor");\r
- intptr_type = CoreLookupType ("System.IntPtr");\r
-\r
- attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");\r
- dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");\r
- methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");\r
- marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");\r
- param_array_type = CoreLookupType ("System.ParamArrayAttribute");\r
-\r
- unverifiable_code_type = CoreLookupType ("System.Security.UnverifiableCodeAttribute");\r
-\r
- void_ptr_type = CoreLookupType ("System.Void*");\r
- \r
- //\r
- // Now load the default methods that we use.\r
- //\r
- Type [] string_string = { string_type, string_type };\r
- string_concat_string_string = GetMethod (\r
- string_type, "Concat", string_string);\r
-\r
- Type [] object_object = { object_type, object_type };\r
- string_concat_object_object = GetMethod (\r
- string_type, "Concat", object_object);\r
-\r
- Type [] string_ = { string_type };\r
- string_isinterneted_string = GetMethod (\r
- string_type, "IsInterned", string_);\r
- \r
- Type [] runtime_type_handle = { runtime_handle_type };\r
- system_type_get_type_from_handle = GetMethod (\r
- type_type, "GetTypeFromHandle", runtime_type_handle);\r
-\r
- Type [] delegate_delegate = { delegate_type, delegate_type };\r
- delegate_combine_delegate_delegate = GetMethod (\r
- delegate_type, "Combine", delegate_delegate);\r
-\r
- delegate_remove_delegate_delegate = GetMethod (\r
- delegate_type, "Remove", delegate_delegate);\r
-\r
- //\r
- // Void arguments\r
- //\r
- Type [] void_arg = { };\r
- object_getcurrent_void = GetMethod (\r
- ienumerator_type, "get_Current", void_arg);\r
- bool_movenext_void = GetMethod (\r
- ienumerator_type, "MoveNext", void_arg);\r
- void_dispose_void = GetMethod (\r
- idisposable_type, "Dispose", void_arg);\r
- int_get_offset_to_string_data = GetMethod (\r
- runtime_helpers_type, "get_OffsetToStringData", void_arg);\r
-\r
- //\r
- // object arguments\r
- //\r
- Type [] object_arg = { object_type };\r
- void_monitor_enter_object = GetMethod (\r
- monitor_type, "Enter", object_arg);\r
- void_monitor_exit_object = GetMethod (\r
- monitor_type, "Exit", object_arg);\r
-\r
- Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };\r
- \r
- void_initializearray_array_fieldhandle = GetMethod (\r
- runtime_helpers_type, "InitializeArray", array_field_handle_arg);\r
-\r
- //\r
- // Array functions\r
- //\r
- Type [] int_arg = { int32_type };\r
- int_getlength_int = GetMethod (\r
- array_type, "GetLength", int_arg);\r
- \r
- //\r
- // Attributes\r
- //\r
- cons_param_array_attribute = GetConstructor (\r
- param_array_type, void_arg);\r
- \r
- }\r
-\r
- const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;\r
-\r
- //\r
- // FIXME: This can be optimized easily. speedup by having a single builder mapping\r
- //\r
- public MemberInfo [] FindMembers (Type t, MemberTypes mt, BindingFlags bf,\r
- MemberFilter filter, object criteria)\r
- {\r
- //\r
- // We have to take care of arrays specially, because GetType on\r
- // a TypeBuilder array will return a Type, not a TypeBuilder,\r
- // and we can not call FindMembers on this type.\r
- //\r
- if (t.IsSubclassOf (TypeManager.array_type))\r
- return TypeManager.array_type.FindMembers (mt, bf, filter, criteria);\r
- \r
- if (!(t is TypeBuilder)){\r
- //\r
- // Since FindMembers will not lookup both static and instance\r
- // members, we emulate this behaviour here.\r
- //\r
- if ((bf & instance_and_static) == instance_and_static){\r
- MemberInfo [] i_members = t.FindMembers (\r
- mt, bf & ~BindingFlags.Static, filter, criteria);\r
- MemberInfo [] s_members = t.FindMembers (\r
- mt, bf & ~BindingFlags.Instance, filter, criteria);\r
-\r
- int i_len = i_members.Length;\r
- int s_len = s_members.Length;\r
- if (i_len > 0 || s_len > 0){\r
- MemberInfo [] both = new MemberInfo [i_len + s_len];\r
-\r
- i_members.CopyTo (both, 0);\r
- s_members.CopyTo (both, i_len);\r
-\r
- return both;\r
- } else\r
- return i_members;\r
- }\r
- return t.FindMembers (mt, bf, filter, criteria);\r
- }\r
-\r
- //\r
- // FIXME: We should not have builder_to_blah everywhere,\r
- // we should just have a builder_to_findmemberizable\r
- // and have them implement a new ICanFindMembers interface\r
- //\r
- Enum e = (Enum) builder_to_enum [t];\r
-\r
- if (e != null)\r
- return e.FindMembers (mt, bf, filter, criteria);\r
- \r
- Delegate del = (Delegate) builder_to_delegate [t];\r
-\r
- if (del != null)\r
- return del.FindMembers (mt, bf, filter, criteria);\r
-\r
- Interface iface = (Interface) builder_to_interface [t];\r
-\r
- if (iface != null) \r
- return iface.FindMembers (mt, bf, filter, criteria);\r
- \r
- TypeContainer tc = (TypeContainer) builder_to_container [t];\r
-\r
- if (tc != null)\r
- return tc.FindMembers (mt, bf, filter, criteria);\r
-\r
- return null;\r
- }\r
-\r
- public static bool IsBuiltinType (Type t)\r
- {\r
- if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||\r
- t == int64_type || t == uint64_type || t == float_type || t == double_type ||\r
- t == char_type || t == short_type || t == decimal_type || t == bool_type ||\r
- t == sbyte_type || t == byte_type || t == ushort_type)\r
- return true;\r
- else\r
- return false;\r
- }\r
-\r
- public static bool IsDelegateType (Type t)\r
- {\r
- if (t.IsSubclassOf (TypeManager.delegate_type))\r
- return true;\r
- else\r
- return false;\r
- }\r
- \r
- public static bool IsEnumType (Type t)\r
- {\r
- if (t.IsSubclassOf (TypeManager.enum_type))\r
- return true;\r
- else\r
- return false;\r
- }\r
- \r
- public static bool IsInterfaceType (Type t)\r
- {\r
- Interface iface = (Interface) builder_to_interface [t];\r
-\r
- if (iface != null)\r
- return true;\r
- else\r
- return false;\r
- }\r
-\r
- /// <summary>\r
- /// Returns the User Defined Types\r
- /// </summary>\r
- public ArrayList UserTypes {\r
- get {\r
- return user_types;\r
- }\r
- }\r
-\r
- public Hashtable TypeContainers {\r
- get {\r
- return typecontainers;\r
- }\r
- }\r
-\r
- static Hashtable builder_to_constant;\r
-\r
- public static void RegisterConstant (FieldBuilder fb, Const c)\r
- {\r
- if (builder_to_constant == null)\r
- builder_to_constant = new PtrHashtable ();\r
-\r
- if (builder_to_constant.Contains (fb))\r
- return;\r
-\r
- builder_to_constant.Add (fb, c);\r
- }\r
-\r
- public static Const LookupConstant (FieldBuilder fb)\r
- {\r
- if (builder_to_constant == null)\r
- return null;\r
- \r
- return (Const) builder_to_constant [fb];\r
- }\r
- \r
- /// <summary>\r
- /// Gigantic work around for missing features in System.Reflection.Emit follows.\r
- /// </summary>\r
- ///\r
- /// <remarks>\r
- /// Since System.Reflection.Emit can not return MethodBase.GetParameters\r
- /// for anything which is dynamic, and we need this in a number of places,\r
- /// we register this information here, and use it afterwards.\r
- /// </remarks>\r
- static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)\r
- {\r
- if (args == null)\r
- args = NoTypes;\r
- \r
- method_arguments.Add (mb, args);\r
- method_internal_params.Add (mb, ip);\r
- \r
- return true;\r
- }\r
- \r
- static public InternalParameters LookupParametersByBuilder (MethodBase mb)\r
- {\r
- if (! (mb is ConstructorBuilder || mb is MethodBuilder))\r
- return null;\r
- \r
- if (method_internal_params.Contains (mb))\r
- return (InternalParameters) method_internal_params [mb];\r
- else\r
- throw new Exception ("Argument for Method not registered" + mb);\r
- }\r
-\r
- /// <summary>\r
- /// Returns the argument types for a method based on its methodbase\r
- ///\r
- /// For dynamic methods, we use the compiler provided types, for\r
- /// methods from existing assemblies we load them from GetParameters,\r
- /// and insert them into the cache\r
- /// </summary>\r
- static public Type [] GetArgumentTypes (MethodBase mb)\r
- {\r
- if (method_arguments.Contains (mb))\r
- return (Type []) method_arguments [mb];\r
- else {\r
- ParameterInfo [] pi = mb.GetParameters ();\r
- int c = pi.Length;\r
- Type [] types = new Type [c];\r
- \r
- for (int i = 0; i < c; i++)\r
- types [i] = pi [i].ParameterType;\r
-\r
- method_arguments.Add (mb, types);\r
- return types;\r
- }\r
- }\r
- \r
- // <remarks>\r
- // This is a workaround the fact that GetValue is not\r
- // supported for dynamic types\r
- // </remarks>\r
- static Hashtable fields = new Hashtable ();\r
- static public bool RegisterFieldValue (FieldBuilder fb, object value)\r
- {\r
- if (fields.Contains (fb))\r
- return false;\r
-\r
- fields.Add (fb, value);\r
-\r
- return true;\r
- }\r
-\r
- static public object GetValue (FieldBuilder fb)\r
- {\r
- return fields [fb];\r
- }\r
-\r
- static Hashtable fieldbuilders_to_fields = new Hashtable ();\r
- static public bool RegisterField (FieldBuilder fb, Field f)\r
- {\r
- if (fieldbuilders_to_fields.Contains (fb))\r
- return false;\r
-\r
- fieldbuilders_to_fields.Add (fb, f);\r
- return true;\r
- }\r
-\r
- static public Field GetField (FieldInfo fb)\r
- {\r
- return (Field) fieldbuilders_to_fields [fb];\r
- }\r
- \r
- static Hashtable events;\r
-\r
- static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)\r
- {\r
- if (events == null)\r
- events = new Hashtable ();\r
-\r
- if (events.Contains (eb))\r
- return false;\r
-\r
- events.Add (eb, new Pair (add, remove));\r
-\r
- return true;\r
- }\r
-\r
- static public MethodInfo GetAddMethod (EventInfo ei)\r
- {\r
- if (ei is MyEventBuilder) {\r
- Pair pair = (Pair) events [ei];\r
-\r
- return (MethodInfo) pair.First;\r
- } else\r
- return ei.GetAddMethod ();\r
- }\r
-\r
- static public MethodInfo GetRemoveMethod (EventInfo ei)\r
- {\r
- if (ei is MyEventBuilder) {\r
- Pair pair = (Pair) events [ei];\r
-\r
- return (MethodInfo) pair.Second;\r
- } else\r
- return ei.GetAddMethod ();\r
- }\r
-\r
- static Hashtable properties;\r
- \r
- static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)\r
- {\r
- if (properties == null)\r
- properties = new Hashtable ();\r
-\r
- if (properties.Contains (pb))\r
- return false;\r
-\r
- properties.Add (pb, new Pair (get, set));\r
-\r
- return true;\r
- }\r
- \r
- //\r
- // FIXME: we need to return the accessors depending on whether\r
- // they are visible or not.\r
- //\r
- static public MethodInfo [] GetAccessors (PropertyInfo pi)\r
- {\r
- MethodInfo [] ret;\r
-\r
- if (pi is PropertyBuilder){\r
- Pair pair = (Pair) properties [pi];\r
-\r
- ret = new MethodInfo [2];\r
- ret [0] = (MethodInfo) pair.First;\r
- ret [1] = (MethodInfo) pair.Second;\r
-\r
- return ret;\r
- } else {\r
- MethodInfo [] mi = new MethodInfo [2];\r
-\r
- //\r
- // Why this and not pi.GetAccessors?\r
- // Because sometimes index 0 is the getter\r
- // sometimes it is 1\r
- //\r
- mi [0] = pi.GetGetMethod (true);\r
- mi [1] = pi.GetSetMethod (true);\r
-\r
- return mi;\r
- }\r
- }\r
-\r
- static public MethodInfo GetPropertyGetter (PropertyInfo pi)\r
- {\r
- if (pi is PropertyBuilder){\r
- Pair de = (Pair) properties [pi];\r
-\r
- return (MethodInfo) de.Second;\r
- } else\r
- return pi.GetSetMethod ();\r
- }\r
-\r
- static public MethodInfo GetPropertySetter (PropertyInfo pi)\r
- {\r
- if (pi is PropertyBuilder){\r
- Pair de = (Pair) properties [pi];\r
-\r
- return (MethodInfo) de.First;\r
- } else\r
- return pi.GetGetMethod ();\r
- }\r
- \r
- /// <remarks>\r
- /// The following is used to check if a given type implements an interface.\r
- /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.\r
- /// </remarks>\r
- public static bool ImplementsInterface (Type t, Type iface)\r
- {\r
- Type [] interfaces;\r
-\r
- //\r
- // FIXME OPTIMIZATION:\r
- // as soon as we hit a non-TypeBuiler in the interface\r
- // chain, we could return, as the `Type.GetInterfaces'\r
- // will return all the interfaces implement by the type\r
- // or its parents.\r
- //\r
- do {\r
- interfaces = t.GetInterfaces ();\r
-\r
- for (int i = interfaces.Length; i > 0; ){\r
- i--;\r
- if (interfaces [i] == iface)\r
- return true;\r
- }\r
- t = t.BaseType;\r
- } while (t != null);\r
- \r
- return false;\r
- }\r
-\r
- //\r
- // This is needed, because enumerations from assemblies\r
- // do not report their underlyingtype, but they report\r
- // themselves\r
- //\r
- public static Type EnumToUnderlying (Type t)\r
- {\r
- t = t.UnderlyingSystemType;\r
- if (!TypeManager.IsEnumType (t))\r
- return t;\r
- \r
- TypeCode tc = Type.GetTypeCode (t);\r
-\r
- switch (tc){\r
- case TypeCode.Boolean:\r
- return TypeManager.bool_type;\r
- case TypeCode.Byte:\r
- return TypeManager.byte_type;\r
- case TypeCode.SByte:\r
- return TypeManager.sbyte_type;\r
- case TypeCode.Char:\r
- return TypeManager.char_type;\r
- case TypeCode.Int16:\r
- return TypeManager.short_type;\r
- case TypeCode.UInt16:\r
- return TypeManager.ushort_type;\r
- case TypeCode.Int32:\r
- return TypeManager.int32_type;\r
- case TypeCode.UInt32:\r
- return TypeManager.uint32_type;\r
- case TypeCode.Int64:\r
- return TypeManager.int64_type;\r
- case TypeCode.UInt64:\r
- return TypeManager.uint64_type;\r
- }\r
- throw new Exception ("Unhandled typecode in enum" + tc);\r
- }\r
-\r
- /// <summary>\r
- /// Utility function that can be used to probe whether a type\r
- /// is managed or not. \r
- /// </summary>\r
- public static bool VerifyUnManaged (Type t, Location loc)\r
- {\r
- if (t.IsValueType){\r
- //\r
- // FIXME: this is more complex, we actually need to\r
- // make sure that the type does not contain any\r
- // classes itself\r
- //\r
- return true;\r
- }\r
-\r
- Report.Error (\r
- 208, loc,\r
- "Cannot take the address or size of a variable of a managed type ('" +\r
- CSharpName (t) + "')");\r
- return false; \r
- }\r
- \r
- /// <summary>\r
- /// Returns the name of the indexer in a given type.\r
- /// </summary>\r
- /// <remarks>\r
- /// The default is not always `Item'. The user can change this behaviour by\r
- /// using the DefaultMemberAttribute in the class.\r
- ///\r
- /// For example, the String class indexer is named `Chars' not `Item' \r
- /// </remarks>\r
- public static string IndexerPropertyName (Type t)\r
- {\r
- \r
- if (t is TypeBuilder) {\r
- TypeContainer tc = (TypeContainer) builder_to_container [t];\r
-\r
- Attributes attrs = tc.OptAttributes;\r
- \r
- if (attrs == null || attrs.AttributeSections == null)\r
- return "Item";\r
-\r
- foreach (AttributeSection asec in attrs.AttributeSections) {\r
-\r
- if (asec.Attributes == null)\r
- continue;\r
-\r
- foreach (Attribute a in asec.Attributes) {\r
- if (a.Name.IndexOf ("DefaultMember") != -1) {\r
- ArrayList pos_args = (ArrayList) a.Arguments [0];\r
- Expression e = ((Argument) pos_args [0]).expr;\r
-\r
- if (e is StringConstant)\r
- return ((StringConstant) e).Value;\r
- }\r
- }\r
- }\r
-\r
- return "Item";\r
- }\r
- \r
- System.Attribute attr = System.Attribute.GetCustomAttribute (t, TypeManager.default_member_type);\r
- \r
- if (attr != null)\r
- {\r
- DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;\r
- \r
- return dma.MemberName;\r
- }\r
-\r
- return "Item";\r
- }\r
-\r
- public static void MakePinned (LocalBuilder builder)\r
- {\r
- //\r
- // FIXME: Flag the "LocalBuilder" type as being\r
- // pinned. Figure out API.\r
- //\r
- }\r
-}\r
-\r
-}\r
+//
+// typemanager.cs: C# type manager
+//
+// Author: Miguel de Icaza (miguel@gnu.org)
+// Ravi Pratap (ravi@ximian.com)
+//
+// Licensed under the terms of the GNU GPL
+//
+// (C) 2001 Ximian, Inc (http://www.ximian.com)
+//
+//
+using System;
+using System.Globalization;
+using System.Collections;
+using System.Reflection;
+using System.Reflection.Emit;
+using System.Text.RegularExpressions;
+using System.Runtime.CompilerServices;
+using System.Diagnostics;
+
+namespace Mono.CSharp {
+
+public class TypeManager {
+ //
+ // A list of core types that the compiler requires or uses
+ //
+ static public Type object_type;
+ static public Type value_type;
+ static public Type string_type;
+ static public Type int32_type;
+ static public Type uint32_type;
+ static public Type int64_type;
+ static public Type uint64_type;
+ static public Type float_type;
+ static public Type double_type;
+ static public Type char_type;
+ static public Type char_ptr_type;
+ static public Type short_type;
+ static public Type decimal_type;
+ static public Type bool_type;
+ static public Type sbyte_type;
+ static public Type byte_type;
+ static public Type ushort_type;
+ static public Type enum_type;
+ static public Type delegate_type;
+ static public Type multicast_delegate_type;
+ static public Type void_type;
+ static public Type enumeration_type;
+ static public Type array_type;
+ static public Type runtime_handle_type;
+ static public Type icloneable_type;
+ static public Type type_type;
+ static public Type ienumerator_type;
+ static public Type idisposable_type;
+ static public Type default_member_type;
+ static public Type iasyncresult_type;
+ static public Type asynccallback_type;
+ static public Type intptr_type;
+ static public Type monitor_type;
+ static public Type runtime_field_handle_type;
+ static public Type attribute_type;
+ static public Type attribute_usage_type;
+ static public Type dllimport_type;
+ static public Type unverifiable_code_type;
+ static public Type methodimpl_attr_type;
+ static public Type marshal_as_attr_type;
+ static public Type param_array_type;
+ static public Type void_ptr_type;
+ static public Type indexer_name_type;
+ static public Type exception_type;
+ static public object obsolete_attribute_type;
+ static public object conditional_attribute_type;
+
+ //
+ // An empty array of types
+ //
+ static public Type [] NoTypes;
+
+
+ //
+ // Expressions representing the internal types. Used during declaration
+ // definition.
+ //
+ static public Expression system_object_expr, system_string_expr;
+ static public Expression system_boolean_expr, system_decimal_expr;
+ static public Expression system_single_expr, system_double_expr;
+ static public Expression system_sbyte_expr, system_byte_expr;
+ static public Expression system_int16_expr, system_uint16_expr;
+ static public Expression system_int32_expr, system_uint32_expr;
+ static public Expression system_int64_expr, system_uint64_expr;
+ static public Expression system_char_expr, system_void_expr;
+ static public Expression system_asynccallback_expr;
+ static public Expression system_iasyncresult_expr;
+
+ //
+ // This is only used when compiling corlib
+ //
+ static public Type system_int32_type;
+ static public Type system_array_type;
+ static public Type system_type_type;
+ static public Type system_assemblybuilder_type;
+ static public MethodInfo system_int_array_get_length;
+ static public MethodInfo system_int_array_get_rank;
+ static public MethodInfo system_object_array_clone;
+ static public MethodInfo system_int_array_get_length_int;
+ static public MethodInfo system_int_array_get_lower_bound_int;
+ static public MethodInfo system_int_array_get_upper_bound_int;
+ static public MethodInfo system_void_array_copyto_array_int;
+ static public MethodInfo system_void_set_corlib_type_builders;
+
+
+ //
+ // Internal, not really used outside
+ //
+ static Type runtime_helpers_type;
+
+ //
+ // These methods are called by code generated by the compiler
+ //
+ static public MethodInfo string_concat_string_string;
+ static public MethodInfo string_concat_object_object;
+ static public MethodInfo string_isinterneted_string;
+ static public MethodInfo system_type_get_type_from_handle;
+ static public MethodInfo object_getcurrent_void;
+ static public MethodInfo bool_movenext_void;
+ static public MethodInfo void_dispose_void;
+ static public MethodInfo void_monitor_enter_object;
+ static public MethodInfo void_monitor_exit_object;
+ static public MethodInfo void_initializearray_array_fieldhandle;
+ static public MethodInfo int_getlength_int;
+ static public MethodInfo delegate_combine_delegate_delegate;
+ static public MethodInfo delegate_remove_delegate_delegate;
+ static public MethodInfo int_get_offset_to_string_data;
+ static public MethodInfo int_array_get_length;
+ static public MethodInfo int_array_get_rank;
+ static public MethodInfo object_array_clone;
+ static public MethodInfo int_array_get_length_int;
+ static public MethodInfo int_array_get_lower_bound_int;
+ static public MethodInfo int_array_get_upper_bound_int;
+ static public MethodInfo void_array_copyto_array_int;
+
+ //
+ // The attribute constructors.
+ //
+ static public ConstructorInfo cons_param_array_attribute;
+ static public ConstructorInfo void_decimal_ctor_five_args;
+ static public ConstructorInfo unverifiable_code_ctor;
+
+ // <remarks>
+ // Holds the Array of Assemblies that have been loaded
+ // (either because it is the default or the user used the
+ // -r command line option)
+ // </remarks>
+ static Assembly [] assemblies;
+
+ // <remarks>
+ // Keeps a list of module builders. We used this to do lookups
+ // on the modulebuilder using GetType -- needed for arrays
+ // </remarks>
+ static ModuleBuilder [] modules;
+
+ // <remarks>
+ // This is the type_cache from the assemblies to avoid
+ // hitting System.Reflection on every lookup.
+ // </summary>
+ static CaseInsensitiveHashtable types;
+
+ // <remarks>
+ // This is used to hotld the corresponding TypeContainer objects
+ // since we need this in FindMembers
+ // </remarks>
+ static CaseInsensitiveHashtable typecontainers;
+
+ // <remarks>
+ // Keeps track of those types that are defined by the
+ // user's program
+ // </remarks>
+ static ArrayList user_types;
+
+ static PtrHashtable builder_to_declspace;
+
+ // <remarks>
+ // Tracks the interfaces implemented by typebuilders. We only
+ // enter those who do implement or or more interfaces
+ // </remarks>
+ static PtrHashtable builder_to_ifaces;
+
+ // <remarks>
+ // Maps MethodBase.RuntimeTypeHandle to a Type array that contains
+ // the arguments to the method
+ // </remarks>
+ static Hashtable method_arguments;
+
+ // <remarks>
+ // Maps PropertyBuilder to a Type array that contains
+ // the arguments to the indexer
+ // </remarks>
+ static Hashtable indexer_arguments;
+
+ // <remarks>
+ // Maybe `method_arguments' should be replaced and only
+ // method_internal_params should be kept?
+ // <remarks>
+ static Hashtable method_internal_params;
+
+ // <remarks>
+ // Keeps track of attribute types
+ // </remarks>
+
+ static Hashtable builder_to_attr;
+
+ // <remarks>
+ // Keeps track of methods
+ // </remarks>
+
+ static Hashtable builder_to_method;
+
+ struct Signature {
+ public string name;
+ public Type [] args;
+ }
+
+ /// <summary>
+ /// A filter for Findmembers that uses the Signature object to
+ /// extract objects
+ /// </summary>
+ static bool SignatureFilter (MemberInfo mi, object criteria)
+ {
+ Signature sig = (Signature) criteria;
+
+ if (!(mi is MethodBase))
+ return false;
+
+ if (mi.Name != sig.name)
+ return false;
+
+ int count = sig.args.Length;
+
+ if (mi is MethodBuilder || mi is ConstructorBuilder){
+ Type [] candidate_args = GetArgumentTypes ((MethodBase) mi);
+
+ if (candidate_args.Length != count)
+ return false;
+
+ for (int i = 0; i < count; i++)
+ if (candidate_args [i] != sig.args [i])
+ return false;
+
+ return true;
+ } else {
+ ParameterInfo [] pars = ((MethodBase) mi).GetParameters ();
+
+ if (pars.Length != count)
+ return false;
+
+ for (int i = 0; i < count; i++)
+ if (pars [i].ParameterType != sig.args [i])
+ return false;
+ return true;
+ }
+ }
+
+ // A delegate that points to the filter above.
+ static MemberFilter signature_filter;
+
+ //
+ // These are expressions that represent some of the internal data types, used
+ // elsewhere
+ //
+ static void InitExpressionTypes ()
+ {
+ system_object_expr = new TypeLookupExpression ("System.Object");
+ system_string_expr = new TypeLookupExpression ("System.String");
+ system_boolean_expr = new TypeLookupExpression ("System.Boolean");
+ system_decimal_expr = new TypeLookupExpression ("System.Decimal");
+ system_single_expr = new TypeLookupExpression ("System.Single");
+ system_double_expr = new TypeLookupExpression ("System.Double");
+ system_sbyte_expr = new TypeLookupExpression ("System.SByte");
+ system_byte_expr = new TypeLookupExpression ("System.Byte");
+ system_int16_expr = new TypeLookupExpression ("System.Int16");
+ system_uint16_expr = new TypeLookupExpression ("System.UInt16");
+ system_int32_expr = new TypeLookupExpression ("System.Int32");
+ system_uint32_expr = new TypeLookupExpression ("System.UInt32");
+ system_int64_expr = new TypeLookupExpression ("System.Int64");
+ system_uint64_expr = new TypeLookupExpression ("System.UInt64");
+ system_char_expr = new TypeLookupExpression ("System.Char");
+ system_void_expr = new TypeLookupExpression ("System.Void");
+ system_asynccallback_expr = new TypeLookupExpression ("System.AsyncCallback");
+ system_iasyncresult_expr = new TypeLookupExpression ("System.IAsyncResult");
+ }
+
+ static TypeManager ()
+ {
+ assemblies = new Assembly [0];
+ modules = null;
+ user_types = new ArrayList ();
+
+ types = new CaseInsensitiveHashtable ();
+ typecontainers = new CaseInsensitiveHashtable ();
+
+ builder_to_declspace = new PtrHashtable ();
+ builder_to_attr = new PtrHashtable ();
+ builder_to_method = new PtrHashtable ();
+ method_arguments = new PtrHashtable ();
+ method_internal_params = new PtrHashtable ();
+ indexer_arguments = new PtrHashtable ();
+ builder_to_ifaces = new PtrHashtable ();
+
+ NoTypes = new Type [0];
+
+ signature_filter = new MemberFilter (SignatureFilter);
+ InitExpressionTypes ();
+ }
+
+ public static void AddUserType (string name, TypeBuilder t, Type [] ifaces)
+ {
+ try {
+ types.Add (name, t);
+ } catch {
+ Type prev = (Type) types [name];
+ TypeContainer tc = builder_to_declspace [prev] as TypeContainer;
+
+ if (tc != null){
+ //
+ // This probably never happens, as we catch this before
+ //
+ Report.Error (-17, "The type `" + name + "' has already been defined.");
+ return;
+ }
+
+ tc = builder_to_declspace [t] as TypeContainer;
+
+ Report.Warning (
+ 1595, "The type `" + name + "' is defined in an existing assembly;"+
+ " Using the new definition from: " + tc.Location);
+ Report.Warning (1595, "Previously defined in: " + prev.Assembly.FullName);
+
+ types.Remove (name);
+ types.Add (name, t);
+ }
+ user_types.Add (t);
+
+ if (ifaces != null)
+ builder_to_ifaces [t] = ifaces;
+ }
+
+ //
+ // This entry point is used by types that we define under the covers
+ //
+ public static void RegisterBuilder (TypeBuilder tb, Type [] ifaces)
+ {
+ if (ifaces != null)
+ builder_to_ifaces [tb] = ifaces;
+ }
+
+ public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, Type [] ifaces)
+ {
+ builder_to_declspace.Add (t, tc);
+ typecontainers.Add (name, tc);
+ AddUserType (name, t, ifaces);
+ }
+
+ public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
+ {
+ types.Add (name, t);
+ builder_to_declspace.Add (t, del);
+ }
+
+ public static void AddEnumType (string name, TypeBuilder t, Enum en)
+ {
+ types.Add (name, t);
+ builder_to_declspace.Add (t, en);
+ }
+
+ public static void AddUserInterface (string name, TypeBuilder t, Interface i, Type [] ifaces)
+ {
+ AddUserType (name, t, ifaces);
+ builder_to_declspace.Add (t, i);
+ }
+
+ public static void AddMethod (MethodBuilder builder, MethodData method)
+ {
+ builder_to_method.Add (builder, method);
+ }
+
+ public static void RegisterAttrType (Type t, TypeContainer tc)
+ {
+ builder_to_attr.Add (t, tc);
+ }
+
+ /// <summary>
+ /// Returns the TypeContainer whose Type is `t' or null if there is no
+ /// TypeContainer for `t' (ie, the Type comes from a library)
+ /// </summary>
+ public static TypeContainer LookupTypeContainer (Type t)
+ {
+ return builder_to_declspace [t] as TypeContainer;
+ }
+
+ public static IMemberContainer LookupMemberContainer (Type t)
+ {
+ if (t is TypeBuilder) {
+ IMemberContainer container = builder_to_declspace [t] as IMemberContainer;
+ if (container != null)
+ return container;
+ }
+
+ return TypeHandle.GetTypeHandle (t);
+ }
+
+ public static Interface LookupInterface (Type t)
+ {
+ return builder_to_declspace [t] as Interface;
+ }
+
+ public static Delegate LookupDelegate (Type t)
+ {
+ return builder_to_declspace [t] as Delegate;
+ }
+
+ public static Enum LookupEnum (Type t)
+ {
+ return builder_to_declspace [t] as Enum;
+ }
+
+ public static TypeContainer LookupAttr (Type t)
+ {
+ return (TypeContainer) builder_to_attr [t];
+ }
+
+ /// <summary>
+ /// Registers an assembly to load types from.
+ /// </summary>
+ public static void AddAssembly (Assembly a)
+ {
+ int top = assemblies.Length;
+ Assembly [] n = new Assembly [top + 1];
+
+ assemblies.CopyTo (n, 0);
+
+ n [top] = a;
+ assemblies = n;
+ }
+
+ /// <summary>
+ /// Registers a module builder to lookup types from
+ /// </summary>
+ public static void AddModule (ModuleBuilder mb)
+ {
+ int top = modules != null ? modules.Length : 0;
+ ModuleBuilder [] n = new ModuleBuilder [top + 1];
+
+ if (modules != null)
+ modules.CopyTo (n, 0);
+ n [top] = mb;
+ modules = n;
+ }
+
+ //
+ // Low-level lookup, cache-less
+ //
+ static Type LookupTypeReflection (string name)
+ {
+ Type t;
+
+ foreach (Assembly a in assemblies){
+ t = a.GetType (name);
+ if (t != null)
+ return t;
+ }
+
+ foreach (ModuleBuilder mb in modules) {
+ t = mb.GetType (name);
+ if (t != null){
+ return t;
+ }
+ }
+ return null;
+ }
+
+ //
+ // This function is used when you want to avoid the lookups, and want to go
+ // directly to the source. This will use the cache.
+ //
+ // Notice that bypassing the cache is bad, because on Microsoft.NET runtime
+ // GetType ("DynamicType[]") != GetType ("DynamicType[]"), and there is no
+ // way to test things other than doing a fullname compare
+ //
+ public static Type LookupTypeDirect (string name)
+ {
+ Type t = (Type) types [name];
+ if (t != null)
+ return t;
+
+ t = LookupTypeReflection (name);
+ if (t == null)
+ return null;
+
+ types [name] = t;
+ return t;
+ }
+
+ /// <summary>
+ /// Returns the Type associated with @name, takes care of the fact that
+ /// reflection expects nested types to be separated from the main type
+ /// with a "+" instead of a "."
+ /// </summary>
+ public static Type LookupType (string name)
+ {
+ Type t;
+
+ //
+ // First lookup in user defined and cached values
+ //
+
+ t = (Type) types [name];
+ if (t != null)
+ return t;
+
+ //
+ // Optimization: ComposedCast will work with an existing type, and might already have the
+ // full name of the type, so the full system lookup can probably be avoided.
+ //
+
+ string [] elements = name.Split ('.');
+ int count = elements.Length;
+
+ for (int n = 1; n <= count; n++){
+ string top_level_type = String.Join (".", elements, 0, n);
+
+ t = (Type) types [top_level_type];
+ if (t == null){
+ t = LookupTypeReflection (top_level_type);
+ if (t == null)
+ continue;
+ }
+
+ if (count == n){
+ types [name] = t;
+ return t;
+ }
+
+ string newt = top_level_type + "+" + String.Join ("+", elements, n, count - n);
+ t = LookupTypeDirect (newt);
+ if (t != null)
+ types [newt] = t;
+ return t;
+ }
+ return null;
+ }
+
+ //
+ // Returns a list of all namespaces in the assemblies and types loaded.
+ //
+ public static CaseInsensitiveHashtable GetNamespaces ()
+ {
+ CaseInsensitiveHashtable namespaces = new CaseInsensitiveHashtable ();
+
+ foreach (Assembly a in assemblies){
+ foreach (Type t in a.GetTypes ()){
+ string ns = t.Namespace;
+
+ if (namespaces.Contains (ns))
+ continue;
+ namespaces [ns] = ns;
+ }
+ }
+
+ foreach (ModuleBuilder mb in modules){
+ foreach (Type t in mb.GetTypes ()){
+ string ns = t.Namespace;
+
+ if (namespaces.Contains (ns))
+ continue;
+ namespaces [ns] = ns;
+ }
+ }
+ return namespaces;
+ }
+
+ /// <summary>
+ /// Returns the C# name of a type if possible, or the full type name otherwise
+ /// </summary>
+ static public string CSharpName (Type t)
+ {
+ return Regex.Replace (t.FullName,
+ @"^System\." +
+ @"(Int32|UInt32|Int16|Uint16|Int64|UInt64|" +
+ @"Single|Double|Char|Decimal|Byte|SByte|Object|" +
+ @"Boolean|String|Void)" +
+ @"(\W+|\b)",
+ new MatchEvaluator (CSharpNameMatch));
+ }
+
+ static String CSharpNameMatch (Match match)
+ {
+ string s = match.Groups [1].Captures [0].Value;
+ return s.ToLower ().
+ Replace ("int32", "int").
+ Replace ("uint32", "uint").
+ Replace ("int16", "short").
+ Replace ("uint16", "ushort").
+ Replace ("int64", "long").
+ Replace ("uint64", "ulong").
+ Replace ("single", "float").
+ Replace ("boolean", "bool")
+ + match.Groups [2].Captures [0].Value;
+ }
+
+ /// <summary>
+ /// Returns the signature of the method
+ /// </summary>
+ static public string CSharpSignature (MethodBase mb)
+ {
+ string sig = "(";
+
+ //
+ // FIXME: We should really have a single function to do
+ // everything instead of the following 5 line pattern
+ //
+ ParameterData iparams = LookupParametersByBuilder (mb);
+
+ if (iparams == null){
+ ParameterInfo [] pi = mb.GetParameters ();
+ iparams = new ReflectionParameters (pi);
+ }
+
+ for (int i = 0; i < iparams.Count; i++) {
+ if (i > 0) {
+ sig += ", ";
+ }
+ sig += iparams.ParameterDesc(i);
+ }
+ sig += ")";
+
+ return mb.DeclaringType.Name + "." + mb.Name + sig;
+ }
+
+ /// <summary>
+ /// Looks up a type, and aborts if it is not found. This is used
+ /// by types required by the compiler
+ /// </summary>
+ static Type CoreLookupType (string name)
+ {
+ Type t = LookupType (name);
+
+ if (t == null){
+ Report.Error (518, "The predefined type `" + name + "' is not defined or imported");
+ Environment.Exit (0);
+ }
+
+ return t;
+ }
+
+ /// <summary>
+ /// Returns the MethodInfo for a method named `name' defined
+ /// in type `t' which takes arguments of types `args'
+ /// </summary>
+ static MethodInfo GetMethod (Type t, string name, Type [] args)
+ {
+ MemberList list;
+ Signature sig;
+
+ sig.name = name;
+ sig.args = args;
+
+ list = FindMembers (t, MemberTypes.Method, instance_and_static | BindingFlags.Public,
+ signature_filter, sig);
+ if (list.Count == 0) {
+ Report.Error (-19, "Can not find the core function `" + name + "'");
+ return null;
+ }
+
+ MethodInfo mi = list [0] as MethodInfo;
+ if (mi == null) {
+ Report.Error (-19, "Can not find the core function `" + name + "'");
+ return null;
+ }
+
+ return mi;
+ }
+
+ /// <summary>
+ /// Returns the ConstructorInfo for "args"
+ /// </summary>
+ public static ConstructorInfo GetConstructor (Type t, Type [] args)
+ {
+ MemberList list;
+ Signature sig;
+
+ sig.name = ".ctor";
+ sig.args = args;
+
+ list = FindMembers (t, MemberTypes.Constructor,
+ instance_and_static | BindingFlags.Public | BindingFlags.DeclaredOnly,
+ signature_filter, sig);
+ if (list.Count == 0){
+ Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
+ return null;
+ }
+
+ ConstructorInfo ci = list [0] as ConstructorInfo;
+ if (ci == null){
+ Report.Error (-19, "Can not find the core constructor for type `" + t.Name + "'");
+ return null;
+ }
+
+ return ci;
+ }
+
+ public static void InitEnumUnderlyingTypes ()
+ {
+
+ int32_type = CoreLookupType ("System.Int32");
+ int64_type = CoreLookupType ("System.Int64");
+ uint32_type = CoreLookupType ("System.UInt32");
+ uint64_type = CoreLookupType ("System.UInt64");
+ byte_type = CoreLookupType ("System.Byte");
+ sbyte_type = CoreLookupType ("System.SByte");
+ short_type = CoreLookupType ("System.Int16");
+ ushort_type = CoreLookupType ("System.UInt16");
+ }
+
+ /// <remarks>
+ /// The types have to be initialized after the initial
+ /// population of the type has happened (for example, to
+ /// bootstrap the corlib.dll
+ /// </remarks>
+ public static void InitCoreTypes ()
+ {
+ object_type = CoreLookupType ("System.Object");
+ value_type = CoreLookupType ("System.ValueType");
+
+ InitEnumUnderlyingTypes ();
+
+ char_type = CoreLookupType ("System.Char");
+ string_type = CoreLookupType ("System.String");
+ float_type = CoreLookupType ("System.Single");
+ double_type = CoreLookupType ("System.Double");
+ char_ptr_type = CoreLookupType ("System.Char*");
+ decimal_type = CoreLookupType ("System.Decimal");
+ bool_type = CoreLookupType ("System.Boolean");
+ enum_type = CoreLookupType ("System.Enum");
+
+ multicast_delegate_type = CoreLookupType ("System.MulticastDelegate");
+ delegate_type = CoreLookupType ("System.Delegate");
+
+ array_type = CoreLookupType ("System.Array");
+ void_type = CoreLookupType ("System.Void");
+ type_type = CoreLookupType ("System.Type");
+
+ runtime_field_handle_type = CoreLookupType ("System.RuntimeFieldHandle");
+ runtime_helpers_type = CoreLookupType ("System.Runtime.CompilerServices.RuntimeHelpers");
+ default_member_type = CoreLookupType ("System.Reflection.DefaultMemberAttribute");
+ runtime_handle_type = CoreLookupType ("System.RuntimeTypeHandle");
+ asynccallback_type = CoreLookupType ("System.AsyncCallback");
+ iasyncresult_type = CoreLookupType ("System.IAsyncResult");
+ ienumerator_type = CoreLookupType ("System.Collections.IEnumerator");
+ idisposable_type = CoreLookupType ("System.IDisposable");
+ icloneable_type = CoreLookupType ("System.ICloneable");
+ monitor_type = CoreLookupType ("System.Threading.Monitor");
+ intptr_type = CoreLookupType ("System.IntPtr");
+
+ attribute_type = CoreLookupType ("System.Attribute");
+ attribute_usage_type = CoreLookupType ("System.AttributeUsageAttribute");
+ dllimport_type = CoreLookupType ("System.Runtime.InteropServices.DllImportAttribute");
+ methodimpl_attr_type = CoreLookupType ("System.Runtime.CompilerServices.MethodImplAttribute");
+ marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
+ param_array_type = CoreLookupType ("System.ParamArrayAttribute");
+
+ unverifiable_code_type= CoreLookupType ("System.Security.UnverifiableCodeAttribute");
+
+ void_ptr_type = CoreLookupType ("System.Void*");
+
+ indexer_name_type = CoreLookupType ("System.Runtime.CompilerServices.IndexerNameAttribute");
+
+ exception_type = CoreLookupType ("System.Exception");
+
+ //
+ // Attribute types
+ //
+ obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
+ conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
+
+ //
+ // When compiling corlib, store the "real" types here.
+ //
+ if (!RootContext.StdLib) {
+ system_int32_type = typeof (System.Int32);
+ system_array_type = typeof (System.Array);
+ system_type_type = typeof (System.Type);
+ system_assemblybuilder_type = typeof (System.Reflection.Emit.AssemblyBuilder);
+
+ Type [] void_arg = { };
+ system_int_array_get_length = GetMethod (
+ system_array_type, "get_Length", void_arg);
+ system_int_array_get_rank = GetMethod (
+ system_array_type, "get_Rank", void_arg);
+ system_object_array_clone = GetMethod (
+ system_array_type, "Clone", void_arg);
+
+ Type [] system_int_arg = { system_int32_type };
+ system_int_array_get_length_int = GetMethod (
+ system_array_type, "GetLength", system_int_arg);
+ system_int_array_get_upper_bound_int = GetMethod (
+ system_array_type, "GetUpperBound", system_int_arg);
+ system_int_array_get_lower_bound_int = GetMethod (
+ system_array_type, "GetLowerBound", system_int_arg);
+
+ Type [] system_array_int_arg = { system_array_type, system_int32_type };
+ system_void_array_copyto_array_int = GetMethod (
+ system_array_type, "CopyTo", system_array_int_arg);
+
+ Type [] system_type_type_arg = { system_type_type, system_type_type, system_type_type };
+
+ try {
+ system_void_set_corlib_type_builders = GetMethod (
+ system_assemblybuilder_type, "SetCorlibTypeBuilders",
+ system_type_type_arg);
+
+ object[] args = new object [3];
+ args [0] = object_type;
+ args [1] = value_type;
+ args [2] = enum_type;
+
+ system_void_set_corlib_type_builders.Invoke (CodeGen.AssemblyBuilder, args);
+ } catch {
+ Console.WriteLine ("Corlib compilation is not supported in Microsoft.NET due to bugs in it");
+ }
+ }
+ }
+
+ //
+ // The helper methods that are used by the compiler
+ //
+ public static void InitCodeHelpers ()
+ {
+ //
+ // Now load the default methods that we use.
+ //
+ Type [] string_string = { string_type, string_type };
+ string_concat_string_string = GetMethod (
+ string_type, "Concat", string_string);
+
+ Type [] object_object = { object_type, object_type };
+ string_concat_object_object = GetMethod (
+ string_type, "Concat", object_object);
+
+ Type [] string_ = { string_type };
+ string_isinterneted_string = GetMethod (
+ string_type, "IsInterned", string_);
+
+ Type [] runtime_type_handle = { runtime_handle_type };
+ system_type_get_type_from_handle = GetMethod (
+ type_type, "GetTypeFromHandle", runtime_type_handle);
+
+ Type [] delegate_delegate = { delegate_type, delegate_type };
+ delegate_combine_delegate_delegate = GetMethod (
+ delegate_type, "Combine", delegate_delegate);
+
+ delegate_remove_delegate_delegate = GetMethod (
+ delegate_type, "Remove", delegate_delegate);
+
+ //
+ // Void arguments
+ //
+ Type [] void_arg = { };
+ object_getcurrent_void = GetMethod (
+ ienumerator_type, "get_Current", void_arg);
+ bool_movenext_void = GetMethod (
+ ienumerator_type, "MoveNext", void_arg);
+ void_dispose_void = GetMethod (
+ idisposable_type, "Dispose", void_arg);
+ int_get_offset_to_string_data = GetMethod (
+ runtime_helpers_type, "get_OffsetToStringData", void_arg);
+ int_array_get_length = GetMethod (
+ array_type, "get_Length", void_arg);
+ int_array_get_rank = GetMethod (
+ array_type, "get_Rank", void_arg);
+
+ //
+ // Int32 arguments
+ //
+ Type [] int_arg = { int32_type };
+ int_array_get_length_int = GetMethod (
+ array_type, "GetLength", int_arg);
+ int_array_get_upper_bound_int = GetMethod (
+ array_type, "GetUpperBound", int_arg);
+ int_array_get_lower_bound_int = GetMethod (
+ array_type, "GetLowerBound", int_arg);
+
+ //
+ // System.Array methods
+ //
+ object_array_clone = GetMethod (
+ array_type, "Clone", void_arg);
+ Type [] array_int_arg = { array_type, int32_type };
+ void_array_copyto_array_int = GetMethod (
+ array_type, "CopyTo", array_int_arg);
+
+ //
+ // object arguments
+ //
+ Type [] object_arg = { object_type };
+ void_monitor_enter_object = GetMethod (
+ monitor_type, "Enter", object_arg);
+ void_monitor_exit_object = GetMethod (
+ monitor_type, "Exit", object_arg);
+
+ Type [] array_field_handle_arg = { array_type, runtime_field_handle_type };
+
+ void_initializearray_array_fieldhandle = GetMethod (
+ runtime_helpers_type, "InitializeArray", array_field_handle_arg);
+
+ //
+ // Array functions
+ //
+ int_getlength_int = GetMethod (
+ array_type, "GetLength", int_arg);
+
+ //
+ // Decimal constructors
+ //
+ Type [] dec_arg = { int32_type, int32_type, int32_type, bool_type, byte_type };
+ void_decimal_ctor_five_args = GetConstructor (
+ decimal_type, dec_arg);
+
+ //
+ // Attributes
+ //
+ cons_param_array_attribute = GetConstructor (
+ param_array_type, void_arg);
+
+ unverifiable_code_ctor = GetConstructor (
+ unverifiable_code_type, void_arg);
+
+ }
+
+ const BindingFlags instance_and_static = BindingFlags.Static | BindingFlags.Instance;
+
+ static CaseInsensitiveHashtable type_hash = new CaseInsensitiveHashtable ();
+
+ /// <remarks>
+ /// This is the "old", non-cache based FindMembers() function. We cannot use
+ /// the cache here because there is no member name argument.
+ /// </remarks>
+ public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
+ MemberFilter filter, object criteria)
+ {
+ DeclSpace decl = (DeclSpace) builder_to_declspace [t];
+bf |= BindingFlags.IgnoreCase;
+ //
+ // `builder_to_declspace' contains all dynamic types.
+ //
+ if (decl != null) {
+ MemberList list;
+ Timer.StartTimer (TimerType.FindMembers);
+ list = decl.FindMembers (mt, bf, filter, criteria);
+ Timer.StopTimer (TimerType.FindMembers);
+ return list;
+ }
+
+ //
+ // We have to take care of arrays specially, because GetType on
+ // a TypeBuilder array will return a Type, not a TypeBuilder,
+ // and we can not call FindMembers on this type.
+ //
+ if (t.IsSubclassOf (TypeManager.array_type))
+ return new MemberList (TypeManager.array_type.FindMembers (mt, bf, filter, criteria));
+
+ //
+ // Since FindMembers will not lookup both static and instance
+ // members, we emulate this behaviour here.
+ //
+ if ((bf & instance_and_static) == instance_and_static){
+ MemberInfo [] i_members = t.FindMembers (
+ mt, bf & ~BindingFlags.Static, filter, criteria);
+
+ int i_len = i_members.Length;
+ if (i_len == 1){
+ MemberInfo one = i_members [0];
+
+ //
+ // If any of these are present, we are done!
+ //
+ if ((one is Type) || (one is EventInfo) || (one is FieldInfo))
+ return new MemberList (i_members);
+ }
+
+ MemberInfo [] s_members = t.FindMembers (
+ mt, bf & ~BindingFlags.Instance, filter, criteria);
+
+ int s_len = s_members.Length;
+ if (i_len > 0 || s_len > 0)
+ return new MemberList (i_members, s_members);
+ else {
+ if (i_len > 0)
+ return new MemberList (i_members);
+ else
+ return new MemberList (s_members);
+ }
+ }
+
+ return new MemberList (t.FindMembers (mt, bf, filter, criteria));
+ }
+
+
+ /// <summary>
+ /// This method is only called from within MemberLookup. It tries to use the member
+ /// cache if possible and falls back to the normal FindMembers if not. The `used_cache'
+ /// flag tells the caller whether we used the cache or not. If we used the cache, then
+ /// our return value will already contain all inherited members and the caller don't need
+ /// to check base classes and interfaces anymore.
+ /// </summary>
+ private static MemberList MemberLookup_FindMembers (Type t, MemberTypes mt, BindingFlags bf,
+ string name, out bool used_cache)
+ {
+ //
+ // We have to take care of arrays specially, because GetType on
+ // a TypeBuilder array will return a Type, not a TypeBuilder,
+ // and we can not call FindMembers on this type.
+ //
+ if (t.IsSubclassOf (TypeManager.array_type)) {
+ used_cache = true;
+ return TypeHandle.ArrayType.MemberCache.FindMembers (
+ mt, bf, name, FilterWithClosure_delegate, null);
+ }
+
+ //
+ // If this is a dynamic type, it's always in the `builder_to_declspace' hash table
+ // and we can ask the DeclSpace for the MemberCache.
+ //
+ if (t is TypeBuilder) {
+ DeclSpace decl = (DeclSpace) builder_to_declspace [t];
+ MemberCache cache = decl.MemberCache;
+
+ //
+ // If this DeclSpace has a MemberCache, use it.
+ //
+
+ if (cache != null) {
+ used_cache = true;
+ return cache.FindMembers (
+ mt, bf, name, FilterWithClosure_delegate, null);
+ }
+
+ // If there is no MemberCache, we need to use the "normal" FindMembers.
+
+ MemberList list;
+ Timer.StartTimer (TimerType.FindMembers);
+ list = decl.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
+ FilterWithClosure_delegate, name);
+ Timer.StopTimer (TimerType.FindMembers);
+ used_cache = false;
+ return list;
+ }
+
+ //
+ // This call will always succeed. There is exactly one TypeHandle instance per
+ // type, TypeHandle.GetTypeHandle() will either return it or create a new one
+ // if it didn't already exist.
+ //
+ TypeHandle handle = TypeHandle.GetTypeHandle (t);
+
+ used_cache = true;
+ return handle.MemberCache.FindMembers (mt, bf, name, FilterWithClosure_delegate, null);
+ }
+
+ public static bool IsBuiltinType (Type t)
+ {
+ if (t == object_type || t == string_type || t == int32_type || t == uint32_type ||
+ t == int64_type || t == uint64_type || t == float_type || t == double_type ||
+ t == char_type || t == short_type || t == decimal_type || t == bool_type ||
+ t == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
+ return true;
+ else
+ return false;
+ }
+
+ public static bool IsDelegateType (Type t)
+ {
+ if (t.IsSubclassOf (TypeManager.delegate_type))
+ return true;
+ else
+ return false;
+ }
+
+ public static bool IsEnumType (Type t)
+ {
+ if (t.IsSubclassOf (TypeManager.enum_type))
+ return true;
+ else
+ return false;
+ }
+
+ //
+ // Whether a type is unmanaged. This is used by the unsafe code (25.2)
+ //
+ public static bool IsUnmanagedType (Type t)
+ {
+ if (IsBuiltinType (t) && t != TypeManager.string_type)
+ return true;
+
+ if (IsEnumType (t))
+ return true;
+
+ if (t.IsPointer)
+ return true;
+
+ if (IsValueType (t)){
+ if (t is TypeBuilder){
+ TypeContainer tc = LookupTypeContainer (t);
+
+ foreach (Field f in tc.Fields){
+ if (f.FieldBuilder.IsStatic)
+ continue;
+ if (!IsUnmanagedType (f.FieldBuilder.FieldType))
+ return false;
+ }
+ } else {
+ FieldInfo [] fields = t.GetFields ();
+
+ foreach (FieldInfo f in fields){
+ if (f.IsStatic)
+ continue;
+ if (!IsUnmanagedType (f.FieldType))
+ return false;
+ }
+ }
+ return true;
+ }
+
+ return false;
+ }
+
+ public static bool IsValueType (Type t)
+ {
+ if (t.IsSubclassOf (TypeManager.value_type))
+ return true;
+ else
+ return false;
+ }
+
+ public static bool IsInterfaceType (Type t)
+ {
+ Interface iface = builder_to_declspace [t] as Interface;
+
+ if (iface != null)
+ return true;
+ else
+ return false;
+ }
+
+ //
+ // Checks whether `type' is a subclass or nested child of `parent'.
+ //
+ public static bool IsSubclassOrNestedChildOf (Type type, Type parent)
+ {
+ do {
+ if ((type == parent) || type.IsSubclassOf (parent))
+ return true;
+
+ // Handle nested types.
+ type = type.DeclaringType;
+ } while (type != null);
+
+ return false;
+ }
+
+ //
+ // Checks whether `type' is a nested child of `parent'.
+ //
+ public static bool IsNestedChildOf (Type type, Type parent)
+ {
+ if ((type == parent) || type.IsSubclassOf (parent))
+ return false;
+ else
+ return IsSubclassOrNestedChildOf (type, parent);
+ }
+
+ /// <summary>
+ /// Returns the User Defined Types
+ /// </summary>
+ public static ArrayList UserTypes {
+ get {
+ return user_types;
+ }
+ }
+
+ public static CaseInsensitiveHashtable TypeContainers {
+ get {
+ return typecontainers;
+ }
+ }
+
+ static Hashtable builder_to_constant;
+
+ public static void RegisterConstant (FieldBuilder fb, Const c)
+ {
+ if (builder_to_constant == null)
+ builder_to_constant = new PtrHashtable ();
+
+ if (builder_to_constant.Contains (fb))
+ return;
+
+ builder_to_constant.Add (fb, c);
+ }
+
+ public static Const LookupConstant (FieldBuilder fb)
+ {
+ if (builder_to_constant == null)
+ return null;
+
+ return (Const) builder_to_constant [fb];
+ }
+
+ /// <summary>
+ /// Gigantic work around for missing features in System.Reflection.Emit follows.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Since System.Reflection.Emit can not return MethodBase.GetParameters
+ /// for anything which is dynamic, and we need this in a number of places,
+ /// we register this information here, and use it afterwards.
+ /// </remarks>
+ static public bool RegisterMethod (MethodBase mb, InternalParameters ip, Type [] args)
+ {
+ if (args == null)
+ args = NoTypes;
+
+ method_arguments.Add (mb, args);
+ method_internal_params.Add (mb, ip);
+
+ return true;
+ }
+
+ static public InternalParameters LookupParametersByBuilder (MethodBase mb)
+ {
+ if (! (mb is ConstructorBuilder || mb is MethodBuilder))
+ return null;
+
+ if (method_internal_params.Contains (mb))
+ return (InternalParameters) method_internal_params [mb];
+ else
+ throw new Exception ("Argument for Method not registered" + mb);
+ }
+
+ /// <summary>
+ /// Returns the argument types for a method based on its methodbase
+ ///
+ /// For dynamic methods, we use the compiler provided types, for
+ /// methods from existing assemblies we load them from GetParameters,
+ /// and insert them into the cache
+ /// </summary>
+ static public Type [] GetArgumentTypes (MethodBase mb)
+ {
+ if (method_arguments.Contains (mb))
+ return (Type []) method_arguments [mb];
+ else {
+ ParameterInfo [] pi = mb.GetParameters ();
+ int c = pi.Length;
+ Type [] types = new Type [c];
+
+ for (int i = 0; i < c; i++)
+ types [i] = pi [i].ParameterType;
+
+ method_arguments.Add (mb, types);
+ return types;
+ }
+ }
+
+ /// <summary>
+ /// Returns the argument types for an indexer based on its PropertyInfo
+ ///
+ /// For dynamic indexers, we use the compiler provided types, for
+ /// indexers from existing assemblies we load them from GetParameters,
+ /// and insert them into the cache
+ /// </summary>
+ static public Type [] GetArgumentTypes (PropertyInfo indexer)
+ {
+ if (indexer_arguments.Contains (indexer))
+ return (Type []) indexer_arguments [indexer];
+ else if (indexer is PropertyBuilder)
+ // If we're a PropertyBuilder and not in the
+ // `indexer_arguments' hash, then we're a property and
+ // not an indexer.
+ return NoTypes;
+ else {
+ ParameterInfo [] pi = indexer.GetIndexParameters ();
+ // Property, not an indexer.
+ if (pi == null)
+ return NoTypes;
+ int c = pi.Length;
+ Type [] types = new Type [c];
+
+ for (int i = 0; i < c; i++)
+ types [i] = pi [i].ParameterType;
+
+ indexer_arguments.Add (indexer, types);
+ return types;
+ }
+ }
+
+ // <remarks>
+ // This is a workaround the fact that GetValue is not
+ // supported for dynamic types
+ // </remarks>
+ static CaseInsensitiveHashtable fields = new CaseInsensitiveHashtable ();
+ static public bool RegisterFieldValue (FieldBuilder fb, object value)
+ {
+ if (fields.Contains (fb))
+ return false;
+
+ fields.Add (fb, value);
+
+ return true;
+ }
+
+ static public object GetValue (FieldBuilder fb)
+ {
+ return fields [fb];
+ }
+
+ static CaseInsensitiveHashtable fieldbuilders_to_fields = new CaseInsensitiveHashtable ();
+ static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
+ {
+ if (fieldbuilders_to_fields.Contains (fb))
+ return false;
+
+ fieldbuilders_to_fields.Add (fb, f);
+ return true;
+ }
+
+ static public FieldBase GetField (FieldInfo fb)
+ {
+ return (FieldBase) fieldbuilders_to_fields [fb];
+ }
+
+ static CaseInsensitiveHashtable events;
+
+ static public bool RegisterEvent (MyEventBuilder eb, MethodBase add, MethodBase remove)
+ {
+ if (events == null)
+ events = new CaseInsensitiveHashtable ();
+
+ if (events.Contains (eb))
+ return false;
+
+ events.Add (eb, new Pair (add, remove));
+
+ return true;
+ }
+
+ static public MethodInfo GetAddMethod (EventInfo ei)
+ {
+ if (ei is MyEventBuilder) {
+ Pair pair = (Pair) events [ei];
+
+ return (MethodInfo) pair.First;
+ } else
+ return ei.GetAddMethod ();
+ }
+
+ static public MethodInfo GetRemoveMethod (EventInfo ei)
+ {
+ if (ei is MyEventBuilder) {
+ Pair pair = (Pair) events [ei];
+
+ return (MethodInfo) pair.Second;
+ } else
+ return ei.GetAddMethod ();
+ }
+
+ static CaseInsensitiveHashtable priv_fields_events;
+
+ static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
+ {
+ if (priv_fields_events == null)
+ priv_fields_events = new CaseInsensitiveHashtable ();
+
+ if (priv_fields_events.Contains (einfo))
+ return false;
+
+ priv_fields_events.Add (einfo, builder);
+
+ return true;
+ }
+
+ static public MemberInfo GetPrivateFieldOfEvent (EventInfo ei)
+ {
+ return (MemberInfo) priv_fields_events [ei];
+ }
+
+ static CaseInsensitiveHashtable properties;
+
+ static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase set)
+ {
+ if (properties == null)
+ properties = new CaseInsensitiveHashtable ();
+
+ if (properties.Contains (pb))
+ return false;
+
+ properties.Add (pb, new Pair (get, set));
+
+ return true;
+ }
+
+ static public bool RegisterIndexer (PropertyBuilder pb, MethodBase get, MethodBase set, Type[] args)
+ {
+ if (!RegisterProperty (pb, get,set))
+ return false;
+
+ indexer_arguments.Add (pb, args);
+
+ return true;
+ }
+
+ static public MethodInfo GetPropertyGetter (PropertyInfo pi)
+ {
+ if (pi is PropertyBuilder){
+ Pair de = (Pair) properties [pi];
+
+ return (MethodInfo) de.Second;
+ } else
+ return pi.GetSetMethod ();
+ }
+
+ static public MethodInfo GetPropertySetter (PropertyInfo pi)
+ {
+ if (pi is PropertyBuilder){
+ Pair de = (Pair) properties [pi];
+
+ return (MethodInfo) de.First;
+ } else
+ return pi.GetGetMethod ();
+ }
+
+ /// <summary>
+ /// Given an array of interface types, expand and eliminate repeated ocurrences
+ /// of an interface.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This expands in context like: IA; IB : IA; IC : IA, IB; the interface "IC" to
+ /// be IA, IB, IC.
+ /// </remarks>
+ public static Type [] ExpandInterfaces (Type [] base_interfaces)
+ {
+ ArrayList new_ifaces = new ArrayList ();
+
+ foreach (Type iface in base_interfaces){
+ if (!new_ifaces.Contains (iface))
+ new_ifaces.Add (iface);
+
+ Type [] implementing = TypeManager.GetInterfaces (iface);
+
+ foreach (Type imp in implementing){
+ if (!new_ifaces.Contains (imp))
+ new_ifaces.Add (imp);
+ }
+ }
+ Type [] ret = new Type [new_ifaces.Count];
+ new_ifaces.CopyTo (ret, 0);
+ return ret;
+ }
+
+ /// <summary>
+ /// This function returns the interfaces in the type `t'. Works with
+ /// both types and TypeBuilders.
+ /// </summary>
+ public static Type [] GetInterfaces (Type t)
+ {
+ //
+ // The reason for catching the Array case is that Reflection.Emit
+ // will not return a TypeBuilder for Array types of TypeBuilder types,
+ // but will still throw an exception if we try to call GetInterfaces
+ // on the type.
+ //
+ // Since the array interfaces are always constant, we return those for
+ // the System.Array
+ //
+
+ if (t.IsArray)
+ t = TypeManager.array_type;
+
+ if (t is TypeBuilder){
+ Type [] parent_ifaces;
+
+ if (t.BaseType == null)
+ parent_ifaces = NoTypes;
+ else
+ parent_ifaces = GetInterfaces (t.BaseType);
+ Type [] type_ifaces = (Type []) builder_to_ifaces [t];
+ if (type_ifaces == null)
+ type_ifaces = NoTypes;
+
+ int parent_count = parent_ifaces.Length;
+ Type [] result = new Type [parent_count + type_ifaces.Length];
+ parent_ifaces.CopyTo (result, 0);
+ type_ifaces.CopyTo (result, parent_count);
+
+ return result;
+ } else
+ return t.GetInterfaces ();
+ }
+
+ /// <remarks>
+ /// The following is used to check if a given type implements an interface.
+ /// The cache helps us reduce the expense of hitting Type.GetInterfaces everytime.
+ /// </remarks>
+ public static bool ImplementsInterface (Type t, Type iface)
+ {
+ Type [] interfaces;
+
+ //
+ // FIXME OPTIMIZATION:
+ // as soon as we hit a non-TypeBuiler in the interface
+ // chain, we could return, as the `Type.GetInterfaces'
+ // will return all the interfaces implement by the type
+ // or its parents.
+ //
+ do {
+ interfaces = GetInterfaces (t);
+
+ if (interfaces != null){
+ foreach (Type i in interfaces){
+ if (i == iface)
+ return true;
+ }
+ }
+
+ t = t.BaseType;
+ } while (t != null);
+
+ return false;
+ }
+
+ // This is a custom version of Convert.ChangeType() which works
+ // with the TypeBuilder defined types when compiling corlib.
+ public static object ChangeType (object value, Type conversionType)
+ {
+ if (!(value is IConvertible))
+ throw new ArgumentException ();
+
+ IConvertible convertValue = (IConvertible) value;
+ CultureInfo ci = CultureInfo.CurrentCulture;
+ NumberFormatInfo provider = ci.NumberFormat;
+
+ //
+ // We must use Type.Equals() here since `conversionType' is
+ // the TypeBuilder created version of a system type and not
+ // the system type itself. You cannot use Type.GetTypeCode()
+ // on such a type - it'd always return TypeCode.Object.
+ //
+ if (conversionType.Equals (typeof (Boolean)))
+ return (object)(convertValue.ToBoolean (provider));
+ else if (conversionType.Equals (typeof (Byte)))
+ return (object)(convertValue.ToByte (provider));
+ else if (conversionType.Equals (typeof (Char)))
+ return (object)(convertValue.ToChar (provider));
+ else if (conversionType.Equals (typeof (DateTime)))
+ return (object)(convertValue.ToDateTime (provider));
+ else if (conversionType.Equals (typeof (Decimal)))
+ return (object)(convertValue.ToDecimal (provider));
+ else if (conversionType.Equals (typeof (Double)))
+ return (object)(convertValue.ToDouble (provider));
+ else if (conversionType.Equals (typeof (Int16)))
+ return (object)(convertValue.ToInt16 (provider));
+ else if (conversionType.Equals (typeof (Int32)))
+ return (object)(convertValue.ToInt32 (provider));
+ else if (conversionType.Equals (typeof (Int64)))
+ return (object)(convertValue.ToInt64 (provider));
+ else if (conversionType.Equals (typeof (SByte)))
+ return (object)(convertValue.ToSByte (provider));
+ else if (conversionType.Equals (typeof (Single)))
+ return (object)(convertValue.ToSingle (provider));
+ else if (conversionType.Equals (typeof (String)))
+ return (object)(convertValue.ToString (provider));
+ else if (conversionType.Equals (typeof (UInt16)))
+ return (object)(convertValue.ToUInt16 (provider));
+ else if (conversionType.Equals (typeof (UInt32)))
+ return (object)(convertValue.ToUInt32 (provider));
+ else if (conversionType.Equals (typeof (UInt64)))
+ return (object)(convertValue.ToUInt64 (provider));
+ else if (conversionType.Equals (typeof (Object)))
+ return (object)(value);
+ else
+ throw new InvalidCastException ();
+ }
+
+ //
+ // This is needed, because enumerations from assemblies
+ // do not report their underlyingtype, but they report
+ // themselves
+ //
+ public static Type EnumToUnderlying (Type t)
+ {
+ if (t == TypeManager.enum_type)
+ return t;
+
+ t = t.UnderlyingSystemType;
+ if (!TypeManager.IsEnumType (t))
+ return t;
+
+ if (t is TypeBuilder) {
+ // slow path needed to compile corlib
+ if (t == TypeManager.bool_type ||
+ t == TypeManager.byte_type ||
+ t == TypeManager.sbyte_type ||
+ t == TypeManager.char_type ||
+ t == TypeManager.short_type ||
+ t == TypeManager.ushort_type ||
+ t == TypeManager.int32_type ||
+ t == TypeManager.uint32_type ||
+ t == TypeManager.int64_type ||
+ t == TypeManager.uint64_type)
+ return t;
+ throw new Exception ("Unhandled typecode in enum " + " from " + t.AssemblyQualifiedName);
+ }
+ TypeCode tc = Type.GetTypeCode (t);
+
+ switch (tc){
+ case TypeCode.Boolean:
+ return TypeManager.bool_type;
+ case TypeCode.Byte:
+ return TypeManager.byte_type;
+ case TypeCode.SByte:
+ return TypeManager.sbyte_type;
+ case TypeCode.Char:
+ return TypeManager.char_type;
+ case TypeCode.Int16:
+ return TypeManager.short_type;
+ case TypeCode.UInt16:
+ return TypeManager.ushort_type;
+ case TypeCode.Int32:
+ return TypeManager.int32_type;
+ case TypeCode.UInt32:
+ return TypeManager.uint32_type;
+ case TypeCode.Int64:
+ return TypeManager.int64_type;
+ case TypeCode.UInt64:
+ return TypeManager.uint64_type;
+ }
+ throw new Exception ("Unhandled typecode in enum " + tc + " from " + t.AssemblyQualifiedName);
+ }
+
+ //
+ // When compiling corlib and called with one of the core types, return
+ // the corresponding typebuilder for that type.
+ //
+ public static Type TypeToCoreType (Type t)
+ {
+ if (RootContext.StdLib || (t is TypeBuilder))
+ return t;
+
+ TypeCode tc = Type.GetTypeCode (t);
+
+ switch (tc){
+ case TypeCode.Boolean:
+ return TypeManager.bool_type;
+ case TypeCode.Byte:
+ return TypeManager.byte_type;
+ case TypeCode.SByte:
+ return TypeManager.sbyte_type;
+ case TypeCode.Char:
+ return TypeManager.char_type;
+ case TypeCode.Int16:
+ return TypeManager.short_type;
+ case TypeCode.UInt16:
+ return TypeManager.ushort_type;
+ case TypeCode.Int32:
+ return TypeManager.int32_type;
+ case TypeCode.UInt32:
+ return TypeManager.uint32_type;
+ case TypeCode.Int64:
+ return TypeManager.int64_type;
+ case TypeCode.UInt64:
+ return TypeManager.uint64_type;
+ case TypeCode.String:
+ return TypeManager.string_type;
+ default:
+ if (t == typeof (void))
+ return TypeManager.void_type;
+ if (t == typeof (object))
+ return TypeManager.object_type;
+ if (t == typeof (System.Type))
+ return TypeManager.type_type;
+ return t;
+ }
+ }
+
+ /// <summary>
+ /// Utility function that can be used to probe whether a type
+ /// is managed or not.
+ /// </summary>
+ public static bool VerifyUnManaged (Type t, Location loc)
+ {
+ if (t.IsValueType || t.IsPointer){
+ //
+ // FIXME: this is more complex, we actually need to
+ // make sure that the type does not contain any
+ // classes itself
+ //
+ return true;
+ }
+
+ if (!RootContext.StdLib && (t == TypeManager.decimal_type))
+ // We need this explicit check here to make it work when
+ // compiling corlib.
+ return true;
+
+ Report.Error (
+ 208, loc,
+ "Cannot take the address or size of a variable of a managed type ('" +
+ CSharpName (t) + "')");
+ return false;
+ }
+
+ /// <summary>
+ /// Returns the name of the indexer in a given type.
+ /// </summary>
+ /// <remarks>
+ /// The default is not always `Item'. The user can change this behaviour by
+ /// using the DefaultMemberAttribute in the class.
+ ///
+ /// For example, the String class indexer is named `Chars' not `Item'
+ /// </remarks>
+ public static string IndexerPropertyName (Type t)
+ {
+ if (t is TypeBuilder) {
+ if (t.IsInterface) {
+ Interface i = LookupInterface (t);
+
+ if ((i == null) || (i.IndexerName == null))
+ return "Item";
+
+ return i.IndexerName;
+ } else {
+ TypeContainer tc = LookupTypeContainer (t);
+
+ if ((tc == null) || (tc.IndexerName == null))
+ return "Item";
+
+ return tc.IndexerName;
+ }
+ }
+
+ System.Attribute attr = System.Attribute.GetCustomAttribute (
+ t, TypeManager.default_member_type);
+ if (attr != null){
+ DefaultMemberAttribute dma = (DefaultMemberAttribute) attr;
+ return dma.MemberName;
+ }
+
+ return "Item";
+ }
+
+ public static void MakePinned (LocalBuilder builder)
+ {
+ //
+ // FIXME: Flag the "LocalBuilder" type as being
+ // pinned. Figure out API.
+ //
+ }
+
+
+ //
+ // Returns whether the array of memberinfos contains the given method
+ //
+ static bool ArrayContainsMethod (MemberInfo [] array, MethodBase new_method)
+ {
+ Type [] new_args = TypeManager.GetArgumentTypes (new_method);
+
+ foreach (MethodBase method in array){
+ if (method.Name != new_method.Name)
+ continue;
+
+ Type [] old_args = TypeManager.GetArgumentTypes (method);
+ int old_count = old_args.Length;
+ int i;
+
+ if (new_args.Length != old_count)
+ continue;
+
+ for (i = 0; i < old_count; i++){
+ if (old_args [i] != new_args [i])
+ break;
+ }
+ if (i != old_count)
+ continue;
+
+ return true;
+ }
+ return false;
+ }
+
+ //
+ // We copy methods from `new_members' into `target_list' if the signature
+ // for the method from in the new list does not exist in the target_list
+ //
+ // The name is assumed to be the same.
+ //
+ public static ArrayList CopyNewMethods (ArrayList target_list, MemberList new_members)
+ {
+ if (target_list == null){
+ target_list = new ArrayList ();
+
+ foreach (MemberInfo mi in new_members){
+ if (mi is MethodBase)
+ target_list.Add (mi);
+ }
+ return target_list;
+ }
+
+ MemberInfo [] target_array = new MemberInfo [target_list.Count];
+ target_list.CopyTo (target_array, 0);
+
+ foreach (MemberInfo mi in new_members){
+ MethodBase new_method = (MethodBase) mi;
+
+ if (!ArrayContainsMethod (target_array, new_method))
+ target_list.Add (new_method);
+ }
+ return target_list;
+ }
+
+ [Flags]
+ public enum MethodFlags {
+ IsObsolete = 1,
+ IsObsoleteError = 2,
+ ShouldIgnore = 3
+ }
+
+ //
+ // Returns the TypeManager.MethodFlags for this method.
+ // This emits an error 619 / warning 618 if the method is obsolete.
+ // In the former case, TypeManager.MethodFlags.IsObsoleteError is returned.
+ //
+ static public MethodFlags GetMethodFlags (MethodBase mb, Location loc)
+ {
+ MethodFlags flags = 0;
+
+ if (mb.DeclaringType is TypeBuilder){
+ MethodData method = (MethodData) builder_to_method [mb];
+ if (method == null) {
+ // FIXME: implement Obsolete attribute on Property,
+ // Indexer and Event.
+ return 0;
+ }
+
+ return method.GetMethodFlags (loc);
+ }
+
+ object [] attrs = mb.GetCustomAttributes (true);
+ foreach (object ta in attrs){
+ if (!(ta is System.Attribute)){
+ Console.WriteLine ("Unknown type in GetMethodFlags: " + ta);
+ continue;
+ }
+ System.Attribute a = (System.Attribute) ta;
+ if (a.TypeId == TypeManager.obsolete_attribute_type){
+ ObsoleteAttribute oa = (ObsoleteAttribute) a;
+
+ string method_desc = TypeManager.CSharpSignature (mb);
+
+ if (oa.IsError) {
+ Report.Error (619, loc, "Method `" + method_desc +
+ "' is obsolete: `" + oa.Message + "'");
+ return MethodFlags.IsObsoleteError;
+ } else
+ Report.Warning (618, loc, "Method `" + method_desc +
+ "' is obsolete: `" + oa.Message + "'");
+
+ flags |= MethodFlags.IsObsolete;
+
+ continue;
+ }
+
+ //
+ // Skip over conditional code.
+ //
+ if (a.TypeId == TypeManager.conditional_attribute_type){
+ ConditionalAttribute ca = (ConditionalAttribute) a;
+
+ if (RootContext.AllDefines [ca.ConditionString] == null)
+ flags |= MethodFlags.ShouldIgnore;
+ }
+ }
+
+ return flags;
+ }
+
+#region MemberLookup implementation
+
+ //
+ // Name of the member
+ //
+ static string closure_name;
+
+ //
+ // Whether we allow private members in the result (since FindMembers
+ // uses NonPublic for both protected and private), we need to distinguish.
+ //
+ static bool closure_private_ok;
+
+ //
+ // Who is invoking us and which type is being queried currently.
+ //
+ static Type closure_invocation_type;
+ static Type closure_queried_type;
+ static Type closure_start_type;
+
+ //
+ // The assembly that defines the type is that is calling us
+ //
+ static Assembly closure_invocation_assembly;
+
+ //
+ // This filter filters by name + whether it is ok to include private
+ // members in the search
+ //
+ static internal bool FilterWithClosure (MemberInfo m, object filter_criteria)
+ {
+ //
+ // Hack: we know that the filter criteria will always be in the `closure'
+ // fields.
+ //
+
+ if ((filter_criteria != null) && (m.Name != (string) filter_criteria))
+ return false;
+
+ if ((closure_start_type == closure_invocation_type) &&
+ (m.DeclaringType == closure_invocation_type))
+ return true;
+
+ //
+ // Ugly: we need to find out the type of `m', and depending
+ // on this, tell whether we accept or not
+ //
+ if (m is MethodBase){
+ MethodBase mb = (MethodBase) m;
+ MethodAttributes ma = mb.Attributes & MethodAttributes.MemberAccessMask;
+
+ if (ma == MethodAttributes.Private)
+ return closure_private_ok || (closure_invocation_type == m.DeclaringType);
+
+ //
+ // FamAndAssem requires that we not only derivate, but we are on the
+ // same assembly.
+ //
+ if (ma == MethodAttributes.FamANDAssem){
+ if (closure_invocation_assembly != mb.DeclaringType.Assembly)
+ return false;
+ }
+
+ // Assembly and FamORAssem succeed if we're in the same assembly.
+ if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
+ if (closure_invocation_assembly == mb.DeclaringType.Assembly)
+ return true;
+ }
+
+ // We already know that we aren't in the same assembly.
+ if (ma == MethodAttributes.Assembly)
+ return false;
+
+ // Family and FamANDAssem require that we derive.
+ if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
+ if (closure_invocation_type == null)
+ return false;
+
+ if (!IsSubclassOrNestedChildOf (closure_invocation_type, mb.DeclaringType))
+ return false;
+
+ return true;
+ }
+
+ // Public.
+ return true;
+ }
+
+ if (m is FieldInfo){
+ FieldInfo fi = (FieldInfo) m;
+ FieldAttributes fa = fi.Attributes & FieldAttributes.FieldAccessMask;
+
+ if (fa == FieldAttributes.Private)
+ return closure_private_ok || (closure_invocation_type == m.DeclaringType);
+
+ //
+ // FamAndAssem requires that we not only derivate, but we are on the
+ // same assembly.
+ //
+ if (fa == FieldAttributes.FamANDAssem){
+ if (closure_invocation_assembly != fi.DeclaringType.Assembly)
+ return false;
+ }
+
+ // Assembly and FamORAssem succeed if we're in the same assembly.
+ if ((fa == FieldAttributes.Assembly) || (fa == FieldAttributes.FamORAssem)){
+ if (closure_invocation_assembly == fi.DeclaringType.Assembly)
+ return true;
+ }
+
+ // We already know that we aren't in the same assembly.
+ if (fa == FieldAttributes.Assembly)
+ return false;
+
+ // Family and FamANDAssem require that we derive.
+ if ((fa == FieldAttributes.Family) || (fa == FieldAttributes.FamANDAssem)){
+ if (closure_invocation_type == null)
+ return false;
+
+ if (!IsSubclassOrNestedChildOf (closure_invocation_type, fi.DeclaringType))
+ return false;
+
+ // Although a derived class can access protected members of its base class
+ // it cannot do so through an instance of the base class (CS1540).
+ if ((closure_invocation_type != closure_start_type) &&
+ closure_invocation_type.IsSubclassOf (closure_start_type))
+ return false;
+
+ return true;
+ }
+
+ // Public.
+ return true;
+ }
+
+ //
+ // EventInfos and PropertyInfos, return true
+ //
+ return true;
+ }
+
+ static MemberFilter FilterWithClosure_delegate = new MemberFilter (FilterWithClosure);
+
+ //
+ // Looks up a member called `name' in the `queried_type'. This lookup
+ // is done by code that is contained in the definition for `invocation_type'.
+ //
+ // The binding flags are `bf' and the kind of members being looked up are `mt'
+ //
+ // Returns an array of a single element for everything but Methods/Constructors
+ // that might return multiple matches.
+ //
+ public static MemberInfo [] MemberLookup (Type invocation_type, Type queried_type,
+ MemberTypes mt, BindingFlags original_bf, string name)
+ {
+ Timer.StartTimer (TimerType.MemberLookup);
+
+ MemberInfo[] retval = RealMemberLookup (invocation_type, queried_type,
+ mt, original_bf, name);
+
+ Timer.StopTimer (TimerType.MemberLookup);
+
+ return retval;
+ }
+
+ static MemberInfo [] RealMemberLookup (Type invocation_type, Type queried_type,
+ MemberTypes mt, BindingFlags original_bf, string name)
+ {
+ BindingFlags bf = original_bf;
+
+ ArrayList method_list = null;
+ Type current_type = queried_type;
+ bool searching = (original_bf & BindingFlags.DeclaredOnly) == 0;
+ bool private_ok;
+ bool always_ok_flag = false;
+ bool skip_iface_check = true, used_cache = false;
+
+ closure_name = name;
+ closure_invocation_type = invocation_type;
+ closure_invocation_assembly = invocation_type != null ? invocation_type.Assembly : null;
+ closure_start_type = queried_type;
+
+ //
+ // If we are a nested class, we always have access to our container
+ // type names
+ //
+ if (invocation_type != null){
+ string invocation_name = invocation_type.FullName;
+ if (invocation_name.IndexOf ('+') != -1){
+ string container = queried_type.FullName + "+";
+ int container_length = container.Length;
+
+ if (invocation_name.Length > container_length){
+ string shared = invocation_name.Substring (0, container_length);
+
+ if (shared == container)
+ always_ok_flag = true;
+ }
+ }
+ }
+
+ do {
+ MemberList list;
+
+ //
+ // `NonPublic' is lame, because it includes both protected and
+ // private methods, so we need to control this behavior by
+ // explicitly tracking if a private method is ok or not.
+ //
+ // The possible cases are:
+ // public, private and protected (internal does not come into the
+ // equation)
+ //
+ if (invocation_type != null){
+ if (invocation_type == current_type){
+ private_ok = (bf & BindingFlags.NonPublic) != 0;
+ } else
+ private_ok = always_ok_flag;
+
+ if (invocation_type.IsSubclassOf (current_type))
+ private_ok = true;
+
+ if (private_ok)
+ bf = original_bf | BindingFlags.NonPublic;
+ } else {
+ private_ok = false;
+ bf = original_bf & ~BindingFlags.NonPublic;
+ }
+
+ closure_private_ok = private_ok;
+ closure_queried_type = current_type;
+
+ Timer.StopTimer (TimerType.MemberLookup);
+
+ list = MemberLookup_FindMembers (current_type, mt, bf, name, out used_cache);
+
+ Timer.StartTimer (TimerType.MemberLookup);
+
+ //
+ // When queried for an interface type, the cache will automatically check all
+ // inherited members, so we don't need to do this here. However, this only
+ // works if we already used the cache in the first iteration of this loop.
+ //
+ // If we used the cache in any further iteration, we can still terminate the
+ // loop since the cache always looks in all parent classes.
+ //
+
+ if (used_cache)
+ searching = false;
+ else
+ skip_iface_check = false;
+
+ if (current_type == TypeManager.object_type)
+ searching = false;
+ else {
+ current_type = current_type.BaseType;
+
+ //
+ // This happens with interfaces, they have a null
+ // basetype. Look members up in the Object class.
+ //
+ if (current_type == null)
+ current_type = TypeManager.object_type;
+ }
+
+ if (list.Count == 0)
+ continue;
+
+ //
+ // Events and types are returned by both `static' and `instance'
+ // searches, which means that our above FindMembers will
+ // return two copies of the same.
+ //
+ if (list.Count == 1 && !(list [0] is MethodBase)){
+ return (MemberInfo []) list;
+ }
+
+ //
+ // Multiple properties: we query those just to find out the indexer
+ // name
+ //
+ if (list [0] is PropertyInfo)
+ return (MemberInfo []) list;
+
+ //
+ // We found methods, turn the search into "method scan"
+ // mode.
+ //
+
+ method_list = CopyNewMethods (method_list, list);
+ mt &= (MemberTypes.Method | MemberTypes.Constructor);
+ } while (searching);
+
+ if (method_list != null && method_list.Count > 0)
+ return (MemberInfo []) method_list.ToArray (typeof (MemberInfo));
+
+ //
+ // This happens if we already used the cache in the first iteration, in this case
+ // the cache already looked in all interfaces.
+ //
+ if (skip_iface_check)
+ return null;
+
+ //
+ // Interfaces do not list members they inherit, so we have to
+ // scan those.
+ //
+ if (!queried_type.IsInterface)
+ return null;
+
+ if (queried_type.IsArray)
+ queried_type = TypeManager.array_type;
+
+ Type [] ifaces = GetInterfaces (queried_type);
+ if (ifaces == null)
+ return null;
+
+ foreach (Type itype in ifaces){
+ MemberInfo [] x;
+
+ x = MemberLookup (null, itype, mt, bf, name);
+ if (x != null)
+ return x;
+ }
+
+ return null;
+ }
+#endregion
+
+}
+
+/// <summary>
+/// There is exactly one instance of this class per type.
+/// </summary>
+public sealed class TypeHandle : IMemberContainer {
+ public readonly TypeHandle BaseType;
+
+ readonly int id = ++next_id;
+ static int next_id = 0;
+
+ /// <summary>
+ /// Lookup a TypeHandle instance for the given type. If the type doesn't have
+ /// a TypeHandle yet, a new instance of it is created. This static method
+ /// ensures that we'll only have one TypeHandle instance per type.
+ /// </summary>
+ public static TypeHandle GetTypeHandle (Type t)
+ {
+ TypeHandle handle = (TypeHandle) type_hash [t];
+ if (handle != null)
+ return handle;
+
+ handle = new TypeHandle (t);
+ type_hash.Add (t, handle);
+ return handle;
+ }
+
+ /// <summary>
+ /// Returns the TypeHandle for TypeManager.object_type.
+ /// </summary>
+ public static IMemberContainer ObjectType {
+ get {
+ if (object_type != null)
+ return object_type;
+
+ object_type = GetTypeHandle (TypeManager.object_type);
+
+ return object_type;
+ }
+ }
+
+ /// <summary>
+ /// Returns the TypeHandle for TypeManager.array_type.
+ /// </summary>
+ public static IMemberContainer ArrayType {
+ get {
+ if (array_type != null)
+ return array_type;
+
+ array_type = GetTypeHandle (TypeManager.array_type);
+
+ return array_type;
+ }
+ }
+
+ private static PtrHashtable type_hash = new PtrHashtable ();
+
+ private static TypeHandle object_type = null;
+ private static TypeHandle array_type = null;
+
+ private Type type;
+ private bool is_interface;
+ private MemberCache member_cache;
+
+ private TypeHandle (Type type)
+ {
+ this.type = type;
+ if (type.BaseType != null)
+ BaseType = GetTypeHandle (type.BaseType);
+ else if ((type != TypeManager.object_type) && (type != typeof (object)))
+ is_interface = true;
+ this.member_cache = new MemberCache (this);
+ }
+
+ // IMemberContainer methods
+
+ public string Name {
+ get {
+ return type.FullName;
+ }
+ }
+
+ public Type Type {
+ get {
+ return type;
+ }
+ }
+
+ public IMemberContainer Parent {
+ get {
+ return BaseType;
+ }
+ }
+
+ public bool IsInterface {
+ get {
+ return is_interface;
+ }
+ }
+
+ public MemberList GetMembers (MemberTypes mt, BindingFlags bf)
+ {
+ if (mt == MemberTypes.Event)
+ return new MemberList (type.GetEvents (bf | BindingFlags.DeclaredOnly));
+ else
+ return new MemberList (type.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
+ null, null));
+ }
+
+ // IMemberFinder methods
+
+ public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
+ MemberFilter filter, object criteria)
+ {
+ return member_cache.FindMembers (mt, bf, name, filter, criteria);
+ }
+
+ public MemberCache MemberCache {
+ get {
+ return member_cache;
+ }
+ }
+
+ public override string ToString ()
+ {
+ if (BaseType != null)
+ return "TypeHandle (" + id + "," + Name + " : " + BaseType + ")";
+ else
+ return "TypeHandle (" + id + "," + Name + ")";
+ }
+}
+
+}
projects / mono.git / blobdiff