// 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 {
+/// <summary>
+/// This is a readonly list of MemberInfo's.
+/// </summary>
+public class MemberList : IList {
+ public readonly IList List;
+ int count;
+
+ /// <summary>
+ /// Create a new MemberList from the given IList.
+ /// </summary>
+ public MemberList (IList list)
+ {
+ if (list != null)
+ this.List = list;
+ else
+ this.List = new ArrayList ();
+ count = List.Count;
+ }
+
+ /// <summary>
+ /// Concatenate the ILists `first' and `second' to a new MemberList.
+ /// </summary>
+ public MemberList (IList first, IList second)
+ {
+ ArrayList list = new ArrayList ();
+ list.AddRange (first);
+ list.AddRange (second);
+ count = list.Count;
+ List = list;
+ }
+
+ public static readonly MemberList Empty = new MemberList (new ArrayList ());
+
+ /// <summary>
+ /// Cast the MemberList into a MemberInfo[] array.
+ /// </summary>
+ /// <remarks>
+ /// This is an expensive operation, only use it if it's really necessary.
+ /// </remarks>
+ public static explicit operator MemberInfo [] (MemberList list)
+ {
+ Timer.StartTimer (TimerType.MiscTimer);
+ MemberInfo [] result = new MemberInfo [list.Count];
+ list.CopyTo (result, 0);
+ Timer.StopTimer (TimerType.MiscTimer);
+ return result;
+ }
+
+ // ICollection
+
+ public int Count {
+ get {
+ return count;
+ }
+ }
+
+ public bool IsSynchronized {
+ get {
+ return List.IsSynchronized;
+ }
+ }
+
+ public object SyncRoot {
+ get {
+ return List.SyncRoot;
+ }
+ }
+
+ public void CopyTo (Array array, int index)
+ {
+ List.CopyTo (array, index);
+ }
+
+ // IEnumerable
+
+ public IEnumerator GetEnumerator ()
+ {
+ return List.GetEnumerator ();
+ }
+
+ // IList
+
+ public bool IsFixedSize {
+ get {
+ return true;
+ }
+ }
+
+ public bool IsReadOnly {
+ get {
+ return true;
+ }
+ }
+
+ object IList.this [int index] {
+ get {
+ return List [index];
+ }
+
+ set {
+ throw new NotSupportedException ();
+ }
+ }
+
+ // FIXME: try to find out whether we can avoid the cast in this indexer.
+ public MemberInfo this [int index] {
+ get {
+ return (MemberInfo) List [index];
+ }
+ }
+
+ public int Add (object value)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public void Clear ()
+ {
+ throw new NotSupportedException ();
+ }
+
+ public bool Contains (object value)
+ {
+ return List.Contains (value);
+ }
+
+ public int IndexOf (object value)
+ {
+ return List.IndexOf (value);
+ }
+
+ public void Insert (int index, object value)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public void Remove (object value)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public void RemoveAt (int index)
+ {
+ throw new NotSupportedException ();
+ }
+}
+
+/// <summary>
+/// This interface is used to get all members of a class when creating the
+/// member cache. It must be implemented by all DeclSpace derivatives which
+/// want to support the member cache and by TypeHandle to get caching of
+/// non-dynamic types.
+/// </summary>
+public interface IMemberContainer {
+ /// <summary>
+ /// The name of the IMemberContainer. This is only used for
+ /// debugging purposes.
+ /// </summary>
+ string Name {
+ get;
+ }
+
+ /// <summary>
+ /// The type of this IMemberContainer.
+ /// </summary>
+ Type Type {
+ get;
+ }
+
+ /// <summary>
+ /// Returns the IMemberContainer of the parent class or null if this
+ /// is an interface or TypeManger.object_type.
+ /// This is used when creating the member cache for a class to get all
+ /// members from the parent class.
+ /// </summary>
+ IMemberContainer Parent {
+ get;
+ }
+
+ /// <summary>
+ /// Whether this is an interface.
+ /// </summary>
+ bool IsInterface {
+ get;
+ }
+
+ /// <summary>
+ /// Returns all members of this class with the corresponding MemberTypes
+ /// and BindingFlags.
+ /// </summary>
+ /// <remarks>
+ /// When implementing this method, make sure not to return any inherited
+ /// members and check the MemberTypes and BindingFlags properly.
+ /// Unfortunately, System.Reflection is lame and doesn't provide a way to
+ /// get the BindingFlags (static/non-static,public/non-public) in the
+ /// MemberInfo class, but the cache needs this information. That's why
+ /// this method is called multiple times with different BindingFlags.
+ /// </remarks>
+ MemberList GetMembers (MemberTypes mt, BindingFlags bf);
+
+ /// <summary>
+ /// Return the container's member cache.
+ /// </summary>
+ MemberCache MemberCache {
+ get;
+ }
+}
+
public class TypeManager {
//
// A list of core types that the compiler requires or uses
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 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
//
- Type runtime_helpers_type;
+ static Type runtime_helpers_type;
//
// These methods are called by code generated by the compiler
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>
- ArrayList assemblies;
+ 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>
- ArrayList modules;
+ static ModuleBuilder [] modules;
// <remarks>
// This is the type_cache from the assemblies to avoid
// hitting System.Reflection on every lookup.
// </summary>
- Hashtable types;
+ static Hashtable types;
// <remarks>
// This is used to hotld the corresponding TypeContainer objects
// since we need this in FindMembers
// </remarks>
- Hashtable typecontainers;
+ static Hashtable typecontainers;
// <remarks>
// Keeps track of those types that are defined by the
// user's program
// </remarks>
- ArrayList user_types;
+ static ArrayList user_types;
+
+ static PtrHashtable builder_to_declspace;
// <remarks>
- // Keeps a mapping between TypeBuilders and their TypeContainers
+ // Tracks the interfaces implemented by typebuilders. We only
+ // enter those who do implement or or more interfaces
// </remarks>
- static PtrHashtable builder_to_container;
+ static PtrHashtable builder_to_ifaces;
// <remarks>
// Maps MethodBase.RuntimeTypeHandle to a Type array that contains
// </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;
- static PtrHashtable builder_to_interface;
-
// <remarks>
- // Keeps track of delegate types
+ // Keeps track of attribute types
// </remarks>
- static Hashtable builder_to_delegate;
+ static Hashtable builder_to_attr;
// <remarks>
- // Keeps track of enum types
+ // Keeps track of methods
// </remarks>
- static Hashtable builder_to_enum;
+ static Hashtable builder_to_method;
- // <remarks>
- // Keeps track of attribute types
- // </remarks>
+ struct Signature {
+ public string name;
+ public Type [] args;
+ }
- static Hashtable builder_to_attr;
+ /// <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;
- public TypeManager ()
+ //
+ // 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 ArrayList ();
- modules = new ArrayList ();
+ assemblies = new Assembly [0];
+ modules = null;
user_types = new ArrayList ();
+
types = new Hashtable ();
typecontainers = new Hashtable ();
- builder_to_interface = new PtrHashtable ();
- builder_to_delegate = new PtrHashtable ();
- builder_to_enum = new PtrHashtable ();
+
+ builder_to_declspace = new PtrHashtable ();
builder_to_attr = new PtrHashtable ();
- }
-
- static TypeManager ()
- {
+ builder_to_method = new PtrHashtable ();
method_arguments = new PtrHashtable ();
method_internal_params = new PtrHashtable ();
- builder_to_container = new PtrHashtable ();
- type_interface_cache = new PtrHashtable ();
+ indexer_arguments = new PtrHashtable ();
+ builder_to_ifaces = new PtrHashtable ();
+
+ NoTypes = new Type [0];
+
+ signature_filter = new MemberFilter (SignatureFilter);
+ InitExpressionTypes ();
}
- public void AddUserType (string name, TypeBuilder t)
+ public static void AddUserType (string name, TypeBuilder t, Type [] ifaces)
{
- types.Add (name, t);
+ 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 void AddUserType (string name, TypeBuilder t, TypeContainer tc)
+ public static void AddUserType (string name, TypeBuilder t, TypeContainer tc, Type [] ifaces)
{
- AddUserType (name, t);
- builder_to_container.Add (t, tc);
+ builder_to_declspace.Add (t, tc);
typecontainers.Add (name, tc);
+ AddUserType (name, t, ifaces);
}
- public void AddDelegateType (string name, TypeBuilder t, Delegate del)
+ public static void AddDelegateType (string name, TypeBuilder t, Delegate del)
{
types.Add (name, t);
- builder_to_delegate.Add (t, del);
+ builder_to_declspace.Add (t, del);
}
- public void AddEnumType (string name, TypeBuilder t, Enum en)
+ public static void AddEnumType (string name, TypeBuilder t, Enum en)
{
types.Add (name, t);
- builder_to_enum.Add (t, en);
+ 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 void AddUserInterface (string name, TypeBuilder t, Interface i)
+ public static void AddMethod (MethodBuilder builder, MethodData method)
{
- AddUserType (name, t);
- builder_to_interface.Add (t, i);
+ builder_to_method.Add (builder, method);
}
- public void RegisterAttrType (Type t, TypeContainer tc)
+ 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 (TypeContainer) builder_to_container [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 Interface LookupInterface (Type t)
+ public static Interface LookupInterface (Type t)
{
- return (Interface) builder_to_interface [t];
+ return builder_to_declspace [t] as Interface;
}
public static Delegate LookupDelegate (Type t)
{
- return (Delegate) builder_to_delegate [t];
+ return builder_to_declspace [t] as Delegate;
}
public static Enum LookupEnum (Type t)
{
- return (Enum) builder_to_enum [t];
+ return builder_to_declspace [t] as Enum;
}
public static TypeContainer LookupAttr (Type t)
/// <summary>
/// Registers an assembly to load types from.
/// </summary>
- public void AddAssembly (Assembly a)
+ public static void AddAssembly (Assembly a)
{
- assemblies.Add (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 void AddModule (ModuleBuilder mb)
+ public static void AddModule (ModuleBuilder mb)
{
- modules.Add (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;
}
/// <summary>
/// Returns the Type associated with @name
/// </summary>
- public Type LookupType (string name)
+ public static Type LookupType (string name)
{
Type t;
return t;
}
}
-
+
return null;
}
/// </summary>
static public string CSharpName (Type t)
{
- if (t == int32_type)
- return "int";
- else if (t == uint32_type)
- return "uint";
- else if (t == int64_type)
- return "long";
- else if (t == uint64_type)
- return "ulong";
- else if (t == float_type)
- return "float";
- else if (t == double_type)
- return "double";
- else if (t == char_type)
- return "char";
- else if (t == short_type)
- return "short";
- else if (t == decimal_type)
- return "decimal";
- else if (t == bool_type)
- return "bool";
- else if (t == sbyte_type)
- return "sbyte";
- else if (t == byte_type)
- return "byte";
- else if (t == short_type)
- return "short";
- else if (t == ushort_type)
- return "ushort";
- else if (t == string_type)
- return "string";
- else if (t == object_type)
- return "object";
- else if (t == void_type)
- return "void";
- else
- return t.FullName;
+ 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>
- Type CoreLookupType (string name)
+ static Type CoreLookupType (string name)
{
Type t = LookupType (name);
/// Returns the MethodInfo for a method named `name' defined
/// in type `t' which takes arguments of types `args'
/// </summary>
- MethodInfo GetMethod (Type t, string name, Type [] args)
+ static MethodInfo GetMethod (Type t, string name, Type [] args)
{
- MethodInfo mi = t.GetMethod (name, 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;
+ }
- if (mi == null)
- throw new Exception ("Can not find the core function `" + name + "'");
+ MethodInfo mi = list [0] as MethodInfo;
+ if (mi == null) {
+ Report.Error (-19, "Can not find the core function `" + name + "'");
+ return null;
+ }
return mi;
}
- ConstructorInfo GetConstructor (Type t, Type [] args)
+ /// <summary>
+ /// Returns the ConstructorInfo for "args"
+ /// </summary>
+ static ConstructorInfo GetConstructor (Type t, Type [] args)
{
- ConstructorInfo ci = t.GetConstructor (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;
+ }
- if (ci == null)
- throw new Exception ("Can not find the core constructor for `" + t.FullName + "'");
+ 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 void InitCoreTypes ()
+ 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");
- int32_type = CoreLookupType ("System.Int32");
- int64_type = CoreLookupType ("System.Int64");
- uint32_type = CoreLookupType ("System.UInt32");
- uint64_type = CoreLookupType ("System.UInt64");
float_type = CoreLookupType ("System.Single");
double_type = CoreLookupType ("System.Double");
- byte_type = CoreLookupType ("System.Byte");
- sbyte_type = CoreLookupType ("System.SByte");
- char_type = CoreLookupType ("System.Char");
- short_type = CoreLookupType ("System.Int16");
- ushort_type = CoreLookupType ("System.UInt16");
+ char_ptr_type = CoreLookupType ("System.Char*");
decimal_type = CoreLookupType ("System.Decimal");
bool_type = CoreLookupType ("System.Boolean");
enum_type = CoreLookupType ("System.Enum");
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");
- param_array_type = CoreLookupType ("System.ParamArrayAttribute");
+ marshal_as_attr_type = CoreLookupType ("System.Runtime.InteropServices.MarshalAsAttribute");
+ param_array_type = CoreLookupType ("System.ParamArrayAttribute");
- unverifiable_code_type = CoreLookupType ("System.Security.UnverifiableCodeAttribute");
+ 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");
- void_ptr_type = CoreLookupType ("System.Void*");
-
//
- // Now load the default methods that we use.
+ // Attribute types
//
- 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);
+ obsolete_attribute_type = CoreLookupType ("System.ObsoleteAttribute");
+ conditional_attribute_type = CoreLookupType ("System.Diagnostics.ConditionalAttribute");
- Type [] string_ = { string_type };
+ //
+ // 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_);
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
//
//
// Array functions
//
- Type [] int_arg = { int32_type };
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;
-
- public MemberInfo [] FindMembers (Type t, MemberTypes mt, BindingFlags bf,
- MemberFilter filter, object criteria)
+
+ static Hashtable type_hash = new Hashtable ();
+
+ /// <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];
+
+ //
+ // `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 TypeManager.array_type.FindMembers (mt, bf, filter, criteria);
-
- if (!(t is TypeBuilder)){
- //
- // 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);
- MemberInfo [] s_members = t.FindMembers (
- mt, bf & ~BindingFlags.Instance, filter, criteria);
+ 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);
+ }
+ }
- int i_len = i_members.Length;
- int s_len = s_members.Length;
- if (i_len > 0 || s_len > 0){
- MemberInfo [] both = new MemberInfo [i_len + s_len];
+ return new MemberList (t.FindMembers (mt, bf, filter, criteria));
+ }
- i_members.CopyTo (both, 0);
- s_members.CopyTo (both, i_len);
- return both;
- } else
- return i_members;
- }
- return 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);
}
//
- // FIXME: We should not have builder_to_blah everywhere,
- // we should just have a builder_to_findmemberizable
- // and have them implement a new ICanFindMembers interface
+ // 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.
//
- Enum e = (Enum) builder_to_enum [t];
+ if (t is TypeBuilder) {
+ DeclSpace decl = (DeclSpace) builder_to_declspace [t];
+ MemberCache cache = decl.MemberCache;
- if (e != null)
- return e.FindMembers (mt, bf, filter, criteria);
-
- Delegate del = (Delegate) builder_to_delegate [t];
+ //
+ // If this DeclSpace has a MemberCache, use it.
+ //
- if (del != null)
- return del.FindMembers (mt, bf, filter, criteria);
+ if (cache != null) {
+ used_cache = true;
+ return cache.FindMembers (
+ mt, bf, name, FilterWithClosure_delegate, null);
+ }
- Interface iface = (Interface) builder_to_interface [t];
+ // If there is no MemberCache, we need to use the "normal" FindMembers.
- if (iface != null)
- return iface.FindMembers (mt, bf, filter, criteria);
-
- TypeContainer tc = (TypeContainer) builder_to_container [t];
+ 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;
+ }
- if (tc != null)
- return tc.FindMembers (mt, bf, filter, criteria);
+ //
+ // 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);
- return null;
+ 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 == sbyte_type || t == byte_type || t == ushort_type || t == void_type)
return true;
else
return false;
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 = (Interface) builder_to_interface [t];
+ Interface iface = builder_to_declspace [t] as Interface;
if (iface != null)
return true;
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;
+ }
+
/// <summary>
/// Returns the User Defined Types
/// </summary>
- public ArrayList UserTypes {
+ public static ArrayList UserTypes {
get {
return user_types;
}
}
- public Hashtable TypeContainers {
+ public static Hashtable TypeContainers {
get {
return typecontainers;
}
/// </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 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
}
static Hashtable fieldbuilders_to_fields = new Hashtable ();
- static public bool RegisterField (FieldBuilder fb, Field f)
+ static public bool RegisterFieldBase (FieldBuilder fb, FieldBase f)
{
if (fieldbuilders_to_fields.Contains (fb))
return false;
return true;
}
- static public Field GetField (FieldInfo fb)
+ static public FieldBase GetField (FieldInfo fb)
{
- return (Field) fieldbuilders_to_fields [fb];
+ return (FieldBase) fieldbuilders_to_fields [fb];
}
static Hashtable events;
return ei.GetAddMethod ();
}
+ static Hashtable priv_fields_events;
+
+ static public bool RegisterPrivateFieldOfEvent (EventInfo einfo, FieldBuilder builder)
+ {
+ if (priv_fields_events == null)
+ priv_fields_events = new Hashtable ();
+
+ 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 Hashtable properties;
static public bool RegisterProperty (PropertyBuilder pb, MethodBase get, MethodBase 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;
+ }
+
//
// FIXME: we need to return the accessors depending on whether
// they are visible or not.
} else
return pi.GetGetMethod ();
}
-
- // <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>
- static Hashtable type_interface_cache;
+ /// <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 = t.GetInterfaces ();
+ interfaces = GetInterfaces (t);
- for (int i = interfaces.Length; i > 0; ){
- i--;
- if (interfaces [i] == iface)
- return true;
+ 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
//
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){
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;
}
- throw new Exception ("Unhandled typecode in enum" + tc);
}
/// <summary>
/// </summary>
public static bool VerifyUnManaged (Type t, Location loc)
{
- if (t.IsValueType){
+ if (t.IsValueType || t.IsPointer){
//
// FIXME: this is more complex, we actually need to
// make sure that the type does not contain any
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 ('" +
/// </remarks>
public static string IndexerPropertyName (Type t)
{
-
if (t is TypeBuilder) {
- TypeContainer tc = (TypeContainer) builder_to_container [t];
+ if (t.IsInterface) {
+ Interface i = LookupInterface (t);
- Attributes attrs = tc.OptAttributes;
-
- if (attrs == null || attrs.AttributeSections == null)
- return "Item";
-
- foreach (AttributeSection asec in attrs.AttributeSections) {
+ if ((i == null) || (i.IndexerName == null))
+ return "Item";
- if (asec.Attributes == null)
- continue;
+ return i.IndexerName;
+ } else {
+ TypeContainer tc = LookupTypeContainer (t);
- foreach (Attribute a in asec.Attributes) {
- if (a.Name.IndexOf ("DefaultMember") != -1) {
- ArrayList pos_args = (ArrayList) a.Arguments [0];
- Expression e = ((Argument) pos_args [0]).expr;
+ if ((tc == null) || (tc.IndexerName == null))
+ return "Item";
- if (e is StringConstant)
- return ((StringConstant) e).Value;
- }
- }
+ return tc.IndexerName;
}
-
- return "Item";
}
- System.Attribute attr = System.Attribute.GetCustomAttribute (t, TypeManager.default_member_type);
-
- if (attr != null)
- {
+ 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)
+ 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;
+
+ // 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;
+ }
+
+ 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 = true;
+ } else
+ private_ok = always_ok_flag;
+
+ if (private_ok || invocation_type.IsSubclassOf (current_type))
+ 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
+
+}
+
+public class MemberCache {
+ public readonly IMemberContainer Container;
+ protected Hashtable member_hash;
+
+ /// <summary>
+ /// Create a new MemberCache for the given IMemberContainer `container'.
+ /// </summary>
+ public MemberCache (IMemberContainer container)
+ {
+ this.Container = container;
+
+ Timer.IncrementCounter (CounterType.MemberCache);
+ Timer.StartTimer (TimerType.CacheInit);
+
+ // If we have a parent class (we have a parent class unless we're
+ // TypeManager.object_type), we deep-copy its MemberCache here.
+ if (Container.Parent != null)
+ member_hash = SetupCache (Container.Parent.MemberCache);
+ else if (Container.IsInterface)
+ member_hash = SetupCacheForInterface ();
+ else
+ member_hash = new Hashtable ();
+
+ // Add all members from the current class.
+ AddMembers (Container);
+
+ Timer.StopTimer (TimerType.CacheInit);
+ }
+
+ /// <summary>
+ /// Bootstrap this member cache by doing a deep-copy of our parent.
+ /// </summary>
+ Hashtable SetupCache (MemberCache parent)
+ {
+ Hashtable hash = new Hashtable ();
+
+ IDictionaryEnumerator it = parent.member_hash.GetEnumerator ();
+ while (it.MoveNext ()) {
+ hash [it.Key] = ((ArrayList) it.Value).Clone ();
+ }
+
+ return hash;
+ }
+
+ /// <summary>
+ /// Add the contents of `new_hash' to `hash'.
+ /// </summary>
+ void AddHashtable (Hashtable hash, Hashtable new_hash)
+ {
+ IDictionaryEnumerator it = new_hash.GetEnumerator ();
+ while (it.MoveNext ()) {
+ ArrayList list = (ArrayList) hash [it.Key];
+ if (list != null)
+ list.AddRange ((ArrayList) it.Value);
+ else
+ hash [it.Key] = ((ArrayList) it.Value).Clone ();
+ }
+ }
+
+ /// <summary>
+ /// Bootstrap the member cache for an interface type.
+ /// Type.GetMembers() won't return any inherited members for interface types, so we
+ /// need to do this manually. Interfaces also inherit from System.Object.
+ /// </summary>
+ Hashtable SetupCacheForInterface ()
+ {
+ Hashtable hash = SetupCache (TypeHandle.ObjectType.MemberCache);
+ Type [] ifaces = TypeManager.GetInterfaces (Container.Type);
+
+ foreach (Type iface in ifaces) {
+ IMemberContainer iface_container = TypeManager.LookupMemberContainer (iface);
+
+ MemberCache iface_cache = iface_container.MemberCache;
+ AddHashtable (hash, iface_cache.member_hash);
+ }
+
+ return hash;
+ }
+
+ /// <summary>
+ /// Add all members from class `container' to the cache.
+ /// </summary>
+ void AddMembers (IMemberContainer container)
+ {
+ AddMembers (MemberTypes.Constructor | MemberTypes.Field | MemberTypes.Method |
+ MemberTypes.Property, container);
+ AddMembers (MemberTypes.NestedType | MemberTypes.Event,
+ BindingFlags.Public, container);
+ AddMembers (MemberTypes.NestedType | MemberTypes.Event,
+ BindingFlags.NonPublic, container);
+ }
+
+ void AddMembers (MemberTypes mt, IMemberContainer container)
+ {
+ AddMembers (mt, BindingFlags.Static | BindingFlags.Public, container);
+ AddMembers (mt, BindingFlags.Static | BindingFlags.NonPublic, container);
+ AddMembers (mt, BindingFlags.Instance | BindingFlags.Public, container);
+ AddMembers (mt, BindingFlags.Instance | BindingFlags.NonPublic, container);
+ }
+
+
+ /// <summary>
+ /// Add all members from class `container' with the requested MemberTypes and BindingFlags
+ /// to the cache. This method is called multiple times with different MemberTypes and
+ /// BindingFlags.
+ /// </summary>
+ void AddMembers (MemberTypes mt, BindingFlags bf, IMemberContainer container)
+ {
+ MemberList members = container.GetMembers (mt, bf);
+ BindingFlags new_bf = (container == Container) ? bf | BindingFlags.DeclaredOnly : bf;
+
+ foreach (MemberInfo member in members) {
+ string name = member.Name;
+
+ // We use a name-based hash table of ArrayList's.
+ ArrayList list = (ArrayList) member_hash [name];
+ if (list == null) {
+ list = new ArrayList ();
+ member_hash.Add (name, list);
+ }
+
+ // When this method is called for the current class, the list will already
+ // contain all inherited members from our parent classes. We cannot add
+ // new members in front of the list since this'd be a expensive operation,
+ // that's why the list is sorted in reverse order (ie. members from the
+ // current class are coming last).
+ list.Add (new CacheEntry (container, member, mt, new_bf));
+ }
+ }
+
+ /// <summary>
+ /// Compute and return a appropriate `EntryType' magic number for the given
+ /// MemberTypes and BindingFlags.
+ /// </summary>
+ protected static EntryType GetEntryType (MemberTypes mt, BindingFlags bf)
+ {
+ EntryType type = EntryType.None;
+
+ if ((mt & MemberTypes.Constructor) != 0)
+ type |= EntryType.Constructor;
+ if ((mt & MemberTypes.Event) != 0)
+ type |= EntryType.Event;
+ if ((mt & MemberTypes.Field) != 0)
+ type |= EntryType.Field;
+ if ((mt & MemberTypes.Method) != 0)
+ type |= EntryType.Method;
+ if ((mt & MemberTypes.Property) != 0)
+ type |= EntryType.Property;
+ if ((mt & MemberTypes.NestedType) != 0)
+ type |= EntryType.NestedType;
+
+ if ((bf & BindingFlags.Instance) != 0)
+ type |= EntryType.Instance;
+ if ((bf & BindingFlags.Static) != 0)
+ type |= EntryType.Static;
+ if ((bf & (BindingFlags.Instance | BindingFlags.Static)) == 0)
+ type |= EntryType.Instance | EntryType.Static;
+ if ((bf & BindingFlags.Public) != 0)
+ type |= EntryType.Public;
+ if ((bf & BindingFlags.NonPublic) != 0)
+ type |= EntryType.NonPublic;
+ if ((bf & BindingFlags.DeclaredOnly) != 0)
+ type |= EntryType.Declared;
+
+ return type;
+ }
+
+ /// <summary>
+ /// The `MemberTypes' enumeration type is a [Flags] type which means that it may
+ /// denote multiple member types. Returns true if the given flags value denotes a
+ /// single member types.
+ /// </summary>
+ public static bool IsSingleMemberType (MemberTypes mt)
+ {
+ switch (mt) {
+ case MemberTypes.Constructor:
+ case MemberTypes.Event:
+ case MemberTypes.Field:
+ case MemberTypes.Method:
+ case MemberTypes.Property:
+ case MemberTypes.NestedType:
+ return true;
+
+ default:
+ return false;
+ }
+ }
+
+ /// <summary>
+ /// We encode the MemberTypes and BindingFlags of each members in a "magic"
+ /// number to speed up the searching process.
+ /// </summary>
+ [Flags]
+ protected enum EntryType {
+ None = 0x000,
+
+ Instance = 0x001,
+ Static = 0x002,
+ MaskStatic = Instance|Static,
+
+ Public = 0x004,
+ NonPublic = 0x008,
+ MaskProtection = Public|NonPublic,
+
+ Declared = 0x010,
+
+ Constructor = 0x020,
+ Event = 0x040,
+ Field = 0x080,
+ Method = 0x100,
+ Property = 0x200,
+ NestedType = 0x400,
+
+ MaskType = Constructor|Event|Field|Method|Property|NestedType
+ }
+
+ protected struct CacheEntry {
+ public readonly IMemberContainer Container;
+ public readonly EntryType EntryType;
+ public readonly MemberInfo Member;
+
+ public CacheEntry (IMemberContainer container, MemberInfo member,
+ MemberTypes mt, BindingFlags bf)
+ {
+ this.Container = container;
+ this.Member = member;
+ this.EntryType = GetEntryType (mt, bf);
+ }
+ }
+
+ /// <summary>
+ /// This is called each time we're walking up one level in the class hierarchy
+ /// and checks whether we can abort the search since we've already found what
+ /// we were looking for.
+ /// </summary>
+ protected bool DoneSearching (ArrayList list)
+ {
+ //
+ // We've found exactly one member in the current class and it's not
+ // a method or constructor.
+ //
+ if (list.Count == 1 && !(list [0] is MethodBase))
+ return true;
+
+ //
+ // Multiple properties: we query those just to find out the indexer
+ // name
+ //
+ if ((list.Count > 0) && (list [0] is PropertyInfo))
+ return true;
+
+ return false;
+ }
+
+ /// <summary>
+ /// Looks up members with name `name'. If you provide an optional
+ /// filter function, it'll only be called with members matching the
+ /// requested member name.
+ ///
+ /// This method will try to use the cache to do the lookup if possible.
+ ///
+ /// Unlike other FindMembers implementations, this method will always
+ /// check all inherited members - even when called on an interface type.
+ /// </summary>
+ public MemberList FindMembers (MemberTypes mt, BindingFlags bf, string name,
+ MemberFilter filter, object criteria)
+ {
+ bool declared_only = (bf & BindingFlags.DeclaredOnly) != 0;
+
+ ArrayList applicable = (ArrayList) member_hash [name];
+ if (applicable == null)
+ return MemberList.Empty;
+
+ ArrayList list = new ArrayList ();
+
+ Timer.StartTimer (TimerType.CachedLookup);
+
+ IMemberContainer current = Container;
+
+ // `applicable' is a list of all members with the given member name `name'
+ // in the current class and all its parent classes. The list is sorted in
+ // reverse order due to the way how the cache is initialy created (to speed
+ // things up, we're doing a deep-copy of our parent).
+
+ for (int i = applicable.Count-1; i >= 0; i--) {
+ CacheEntry entry = (CacheEntry) applicable [i];
+
+ // This happens each time we're walking one level up in the class
+ // hierarchy. If we're doing a DeclaredOnly search, we must abort
+ // the first time this happens (this may already happen in the first
+ // iteration of this loop if there are no members with the name we're
+ // looking for in the current class).
+ if (entry.Container != current) {
+ if (declared_only || DoneSearching (list))
+ break;
+
+ current = entry.Container;
+ }
+
+ EntryType type = GetEntryType (mt, bf);
+
+ // Is the member of the correct type ?
+ if ((entry.EntryType & type & EntryType.MaskType) == 0)
+ continue;
+
+ // Is the member static/non-static ?
+ if ((entry.EntryType & type & EntryType.MaskStatic) == 0)
+ continue;
+
+ // Apply the filter to it.
+ if (filter (entry.Member, criteria))
+ list.Add (entry.Member);
+ }
+
+ Timer.StopTimer (TimerType.CachedLookup);
+
+ return new MemberList (list);
+ }
+}
+
+/// <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)
+ {
+ 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