// Dual licensed under the terms of the MIT X11 or GNU GPL
//
// Copyright 2001 Ximian, Inc (http://www.ximian.com)
-// Copyright 2003-2008 Novell, Inc (http://www.ximian.com)
+// Copyright 2003-2009 Novell, Inc (http://www.novell.com)
//
using System;
-using System.Collections;
using System.Reflection;
using System.Reflection.Emit;
-using System.Text;
+using System.Collections.Generic;
namespace Mono.CSharp {
- /// <summary>
- /// Holds Delegates
- /// </summary>
- public class Delegate : DeclSpace, IMemberContainer
+ //
+ // Delegate container implementation
+ //
+ public class Delegate : TypeContainer
{
FullNamedExpression ReturnType;
- public ParametersCompiled Parameters;
+ public readonly ParametersCompiled Parameters;
- public ConstructorBuilder ConstructorBuilder;
- public MethodBuilder InvokeBuilder;
- public MethodBuilder BeginInvokeBuilder;
- public MethodBuilder EndInvokeBuilder;
-
- Type ret_type;
+ Constructor Constructor;
+ Method InvokeBuilder;
+ Method BeginInvokeBuilder;
+ Method EndInvokeBuilder;
+
+ static readonly string[] attribute_targets = new string [] { "type", "return" };
- static string[] attribute_targets = new string [] { "type", "return" };
+ public static readonly string InvokeMethodName = "Invoke";
Expression instance_expr;
- MethodBase delegate_method;
ReturnParameter return_attributes;
- MemberCache member_cache;
+ const Modifiers MethodModifiers = Modifiers.PUBLIC | Modifiers.VIRTUAL;
- const MethodAttributes mattr = MethodAttributes.Public | MethodAttributes.HideBySig |
- MethodAttributes.Virtual | MethodAttributes.NewSlot;
-
- const int AllowedModifiers =
+ const Modifiers AllowedModifiers =
Modifiers.NEW |
Modifiers.PUBLIC |
Modifiers.PROTECTED |
Modifiers.INTERNAL |
- Modifiers.UNSAFE |
+ Modifiers.UNSAFE |
Modifiers.PRIVATE;
public Delegate (NamespaceEntry ns, DeclSpace parent, FullNamedExpression type,
- int mod_flags, MemberName name, ParametersCompiled param_list,
+ Modifiers mod_flags, MemberName name, ParametersCompiled param_list,
Attributes attrs)
- : base (ns, parent, name, attrs)
+ : base (ns, parent, name, attrs, MemberKind.Delegate)
{
this.ReturnType = type;
- ModFlags = Modifiers.Check (AllowedModifiers, mod_flags,
+ ModFlags = ModifiersExtensions.Check (AllowedModifiers, mod_flags,
IsTopLevel ? Modifiers.INTERNAL :
- Modifiers.PRIVATE, name.Location);
+ Modifiers.PRIVATE, name.Location, Report);
Parameters = param_list;
+ spec = new TypeSpec (Kind, null, this, null, ModFlags | Modifiers.SEALED);
}
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
+ public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
{
if (a.Target == AttributeTargets.ReturnValue) {
if (return_attributes == null)
- return_attributes = new ReturnParameter (InvokeBuilder, Location);
+ return_attributes = new ReturnParameter (this, InvokeBuilder.MethodBuilder, Location);
- return_attributes.ApplyAttributeBuilder (a, cb, pa);
+ return_attributes.ApplyAttributeBuilder (a, ctor, cdata, pa);
return;
}
- base.ApplyAttributeBuilder (a, cb, pa);
+ base.ApplyAttributeBuilder (a, ctor, cdata, pa);
}
- public override TypeBuilder DefineType ()
- {
- if (TypeBuilder != null)
- return TypeBuilder;
-
- if (IsTopLevel) {
- if (TypeManager.NamespaceClash (Name, Location))
- return null;
-
- ModuleBuilder builder = Module.Builder;
-
- TypeBuilder = builder.DefineType (
- Name, TypeAttr, TypeManager.multicast_delegate_type);
- } else {
- TypeBuilder builder = Parent.TypeBuilder;
-
- string name = Name.Substring (1 + Name.LastIndexOf ('.'));
- TypeBuilder = builder.DefineNestedType (
- name, TypeAttr, TypeManager.multicast_delegate_type);
- }
-
- TypeManager.AddUserType (this);
-
-#if GMCS_SOURCE
- if (IsGeneric) {
- string[] param_names = new string [TypeParameters.Length];
- for (int i = 0; i < TypeParameters.Length; i++)
- param_names [i] = TypeParameters [i].Name;
-
- GenericTypeParameterBuilder[] gen_params;
- gen_params = TypeBuilder.DefineGenericParameters (param_names);
-
- int offset = CountTypeParameters - CurrentTypeParameters.Length;
- for (int i = offset; i < gen_params.Length; i++)
- CurrentTypeParameters [i - offset].Define (gen_params [i]);
-
- foreach (TypeParameter type_param in CurrentTypeParameters) {
- if (!type_param.Resolve (this))
- return null;
- }
-
- Expression current = new SimpleName (
- MemberName.Basename, TypeParameters, Location);
- current = current.ResolveAsTypeTerminal (this, false);
- if (current == null)
- return null;
-
- CurrentType = current.Type;
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Delegate;
}
-#endif
-
- return TypeBuilder;
}
- public override bool Define ()
+ protected override bool DoDefineMembers ()
{
- if (IsGeneric) {
- foreach (TypeParameter type_param in TypeParameters) {
- if (!type_param.Resolve (this))
- return false;
- }
-
- foreach (TypeParameter type_param in TypeParameters) {
- if (!type_param.DefineType (this))
- return false;
+ var ctor_parameters = ParametersCompiled.CreateFullyResolved (
+ new [] {
+ new Parameter (new TypeExpression (TypeManager.object_type, Location), "object", Parameter.Modifier.NONE, null, Location),
+ new Parameter (new TypeExpression (TypeManager.intptr_type, Location), "method", Parameter.Modifier.NONE, null, Location)
+ },
+ new [] {
+ TypeManager.object_type,
+ TypeManager.intptr_type
}
- }
-
- member_cache = new MemberCache (TypeManager.multicast_delegate_type, this);
-
- // FIXME: POSSIBLY make this static, as it is always constant
- //
- Type [] const_arg_types = new Type [2];
- const_arg_types [0] = TypeManager.object_type;
- const_arg_types [1] = TypeManager.intptr_type;
-
- const MethodAttributes ctor_mattr = MethodAttributes.RTSpecialName | MethodAttributes.SpecialName |
- MethodAttributes.HideBySig | MethodAttributes.Public;
-
- ConstructorBuilder = TypeBuilder.DefineConstructor (ctor_mattr,
- CallingConventions.Standard,
- const_arg_types);
+ );
- ConstructorBuilder.DefineParameter (1, ParameterAttributes.None, "object");
- ConstructorBuilder.DefineParameter (2, ParameterAttributes.None, "method");
- //
- // HACK because System.Reflection.Emit is lame
- //
- IParameterData [] fixed_pars = new IParameterData [] {
- new ParameterData ("object", Parameter.Modifier.NONE),
- new ParameterData ("method", Parameter.Modifier.NONE)
- };
-
- AParametersCollection const_parameters = new ParametersImported (
- fixed_pars,
- new Type[] { TypeManager.object_type, TypeManager.intptr_type });
-
- TypeManager.RegisterMethod (ConstructorBuilder, const_parameters);
- member_cache.AddMember (ConstructorBuilder, this);
-
- ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
+ Constructor = new Constructor (this, System.Reflection.ConstructorInfo.ConstructorName,
+ Modifiers.PUBLIC, null, ctor_parameters, null, Location);
+ Constructor.Define ();
//
// Here the various methods like Invoke, BeginInvoke etc are defined
//
// First, call the `out of band' special method for
// defining recursively any types we need:
-
- if (!Parameters.Resolve (this))
+ //
+ var p = Parameters;
+
+ if (!p.Resolve (this))
return false;
//
//
// Check accessibility
- foreach (Type partype in Parameters.Types){
+ foreach (var partype in p.Types) {
if (!IsAccessibleAs (partype)) {
Report.SymbolRelatedToPreviousError (partype);
Report.Error (59, Location,
- "Inconsistent accessibility: parameter type `{0}' is less accessible than delegate `{1}'",
- TypeManager.CSharpName (partype),
- GetSignatureForError ());
- return false;
+ "Inconsistent accessibility: parameter type `{0}' is less accessible than delegate `{1}'",
+ TypeManager.CSharpName (partype), GetSignatureForError ());
}
}
-
+
ReturnType = ReturnType.ResolveAsTypeTerminal (this, false);
if (ReturnType == null)
return false;
- ret_type = ReturnType.Type;
-
+ var ret_type = ReturnType.Type;
+
+ //
+ // We don't have to check any others because they are all
+ // guaranteed to be accessible - they are standard types.
+ //
if (!IsAccessibleAs (ret_type)) {
Report.SymbolRelatedToPreviousError (ret_type);
Report.Error (58, Location,
- "Inconsistent accessibility: return type `" +
- TypeManager.CSharpName (ret_type) + "' is less " +
- "accessible than delegate `" + GetSignatureForError () + "'");
+ "Inconsistent accessibility: return type `" +
+ TypeManager.CSharpName (ret_type) + "' is less " +
+ "accessible than delegate `" + GetSignatureForError () + "'");
return false;
}
CheckProtectedModifier ();
if (RootContext.StdLib && TypeManager.IsSpecialType (ret_type)) {
- Method.Error1599 (Location, ret_type);
+ Method.Error1599 (Location, ret_type, Report);
return false;
}
TypeManager.CheckTypeVariance (ret_type, Variance.Covariant, this);
+ InvokeBuilder = new Method (this, null, ReturnType, MethodModifiers, new MemberName (InvokeMethodName), p, null);
+ InvokeBuilder.Define ();
+
//
- // We don't have to check any others because they are all
- // guaranteed to be accessible - they are standard types.
+ // Don't emit async method for compiler generated delegates (e.g. dynamic site containers)
//
-
- CallingConventions cc = Parameters.CallingConvention;
-
- InvokeBuilder = TypeBuilder.DefineMethod ("Invoke",
- mattr,
- cc,
- ret_type,
- Parameters.GetEmitTypes ());
-
- InvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
-
- TypeManager.RegisterMethod (InvokeBuilder, Parameters);
- member_cache.AddMember (InvokeBuilder, this);
-
- if (TypeManager.iasyncresult_type != null && TypeManager.asynccallback_type != null) {
- DefineAsyncMethods (cc);
+ if (TypeManager.iasyncresult_type != null && TypeManager.asynccallback_type != null && !IsCompilerGenerated) {
+ DefineAsyncMethods (Parameters.CallingConvention);
}
return true;
//
// BeginInvoke
//
- ParametersCompiled async_parameters = ParametersCompiled.MergeGenerated (Parameters, false,
- new Parameter [] {
- new Parameter (null, "callback", Parameter.Modifier.NONE, null, Location),
- new Parameter (null, "object", Parameter.Modifier.NONE, null, Location)
+ Parameter[] compiled = new Parameter[Parameters.Count];
+ for (int i = 0; i < compiled.Length; ++i)
+ compiled[i] = new Parameter (new TypeExpression (Parameters.Types[i], Location),
+ Parameters.FixedParameters[i].Name,
+ Parameters.FixedParameters[i].ModFlags & (Parameter.Modifier.REF | Parameter.Modifier.OUT),
+ null, Location);
+
+ ParametersCompiled async_parameters = new ParametersCompiled (Compiler, compiled);
+
+ async_parameters = ParametersCompiled.MergeGenerated (Compiler, async_parameters, false,
+ new Parameter[] {
+ new Parameter (new TypeExpression (TypeManager.asynccallback_type, Location), "callback", Parameter.Modifier.NONE, null, Location),
+ new Parameter (new TypeExpression (TypeManager.object_type, Location), "object", Parameter.Modifier.NONE, null, Location)
},
- new Type [] {
+ new [] {
TypeManager.asynccallback_type,
TypeManager.object_type
}
);
- BeginInvokeBuilder = TypeBuilder.DefineMethod ("BeginInvoke",
- mattr, cc, TypeManager.iasyncresult_type, async_parameters.GetEmitTypes ());
-
- BeginInvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
- TypeManager.RegisterMethod (BeginInvokeBuilder, async_parameters);
- member_cache.AddMember (BeginInvokeBuilder, this);
+ BeginInvokeBuilder = new Method (this, null,
+ new TypeExpression (TypeManager.iasyncresult_type, Location), MethodModifiers,
+ new MemberName ("BeginInvoke"), async_parameters, null);
+ BeginInvokeBuilder.Define ();
//
// EndInvoke is a bit more interesting, all the parameters labeled as
}
if (out_params > 0) {
- Type [] end_param_types = new Type [out_params];
- Parameter[] end_params = new Parameter [out_params];
+ var end_param_types = new TypeSpec [out_params];
+ Parameter[] end_params = new Parameter[out_params];
int param = 0;
for (int i = 0; i < Parameters.FixedParameters.Length; ++i) {
if ((p.ModFlags & Parameter.Modifier.ISBYREF) == 0)
continue;
- end_param_types [param] = Parameters.Types [i];
- end_params [param] = p;
+ end_param_types[param] = Parameters.Types[i];
+ end_params[param] = p;
++param;
}
end_parameters = ParametersCompiled.CreateFullyResolved (end_params, end_param_types);
end_parameters = ParametersCompiled.EmptyReadOnlyParameters;
}
- end_parameters = ParametersCompiled.MergeGenerated (end_parameters, false,
- new Parameter (null, "result", Parameter.Modifier.NONE, null, Location), TypeManager.iasyncresult_type);
+ end_parameters = ParametersCompiled.MergeGenerated (Compiler, end_parameters, false,
+ new Parameter (
+ new TypeExpression (TypeManager.iasyncresult_type, Location),
+ "result", Parameter.Modifier.NONE, null, Location),
+ TypeManager.iasyncresult_type);
//
// Create method, define parameters, register parameters with type system
//
- EndInvokeBuilder = TypeBuilder.DefineMethod ("EndInvoke", mattr, cc, ret_type, end_parameters.GetEmitTypes ());
- EndInvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
+ EndInvokeBuilder = new Method (this, null, ReturnType, MethodModifiers, new MemberName ("EndInvoke"), end_parameters, null);
+ EndInvokeBuilder.Define ();
+ }
- end_parameters.ApplyAttributes (EndInvokeBuilder);
- TypeManager.RegisterMethod (EndInvokeBuilder, end_parameters);
- member_cache.AddMember (EndInvokeBuilder, this);
+ public override void DefineConstants ()
+ {
+ if (!Parameters.IsEmpty && Parameters[Parameters.Count - 1].HasDefaultValue) {
+ var rc = new ResolveContext (this);
+ Parameters.ResolveDefaultValues (rc);
+ }
}
- public override void Emit ()
+ public override void EmitType ()
{
- Parameters.ApplyAttributes (InvokeBuilder);
+ if (ReturnType.Type == InternalType.Dynamic) {
+ return_attributes = new ReturnParameter (this, InvokeBuilder.MethodBuilder, Location);
+ PredefinedAttributes.Get.Dynamic.EmitAttribute (return_attributes.Builder);
+ } else {
+ var trans_flags = TypeManager.HasDynamicTypeUsed (ReturnType.Type);
+ if (trans_flags != null) {
+ var pa = PredefinedAttributes.Get.DynamicTransform;
+ if (pa.Constructor != null || pa.ResolveConstructor (Location, ArrayContainer.MakeType (TypeManager.bool_type))) {
+ return_attributes = new ReturnParameter (this, InvokeBuilder.MethodBuilder, Location);
+ return_attributes.Builder.SetCustomAttribute (
+ new CustomAttributeBuilder (pa.Constructor, new object [] { trans_flags }));
+ }
+ }
+ }
+
+ Parameters.ApplyAttributes (InvokeBuilder.MethodBuilder);
+
+ Constructor.ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
+ InvokeBuilder.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
if (BeginInvokeBuilder != null) {
- ParametersCompiled p = (ParametersCompiled) TypeManager.GetParameterData (BeginInvokeBuilder);
- p.ApplyAttributes (BeginInvokeBuilder);
+ BeginInvokeBuilder.ParameterInfo.ApplyAttributes (BeginInvokeBuilder.MethodBuilder);
+
+ BeginInvokeBuilder.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
+ EndInvokeBuilder.MethodBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);
}
if (OptAttributes != null) {
base.Emit ();
}
+ protected override TypeExpr[] ResolveBaseTypes (out TypeExpr base_class)
+ {
+ base_type = TypeManager.multicast_delegate_type;
+ base_class = null;
+ return null;
+ }
+
protected override TypeAttributes TypeAttr {
get {
- return Modifiers.TypeAttr (ModFlags, IsTopLevel) |
+ return ModifiersExtensions.TypeAttr (ModFlags, IsTopLevel) |
TypeAttributes.Class | TypeAttributes.Sealed |
base.TypeAttr;
}
return false;
}
- Parameters.VerifyClsCompliance ();
+ Parameters.VerifyClsCompliance (this);
- if (!AttributeTester.IsClsCompliant (ReturnType.Type)) {
+ if (!ReturnType.Type.IsCLSCompliant ()) {
Report.Warning (3002, 1, Location, "Return type of `{0}' is not CLS-compliant",
GetSignatureForError ());
}
}
- public static ConstructorInfo GetConstructor (Type container_type, Type delegate_type)
+ public static MethodSpec GetConstructor (CompilerContext ctx, TypeSpec container_type, TypeSpec delType)
{
- Type dt = delegate_type;
- Type[] g_args = null;
- if (TypeManager.IsGenericType (delegate_type)) {
- g_args = TypeManager.GetTypeArguments (delegate_type);
- delegate_type = TypeManager.DropGenericTypeArguments (delegate_type);
- }
-
- Delegate d = TypeManager.LookupDelegate (delegate_type);
- if (d != null) {
-#if GMCS_SOURCE
- if (g_args != null)
- return TypeBuilder.GetConstructor (dt, d.ConstructorBuilder);
-#endif
- return d.ConstructorBuilder;
- }
-
- Expression ml = Expression.MemberLookup (container_type,
- null, dt, ConstructorInfo.ConstructorName, MemberTypes.Constructor,
- BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly, Location.Null);
-
- MethodGroupExpr mg = ml as MethodGroupExpr;
- if (mg == null) {
- Report.Error (-100, Location.Null, "Internal error: could not find delegate constructor!");
- // FIXME: null will cause a crash later
- return null;
- }
-
- return (ConstructorInfo) mg.Methods[0];
+ var ctor = MemberCache.FindMember (delType, MemberFilter.Constructor (null), BindingRestriction.DeclaredOnly);
+ return (MethodSpec) ctor;
}
//
- // Returns the MethodBase for "Invoke" from a delegate type, this is used
- // to extract the signature of a delegate.
+ // Returns the "Invoke" from a delegate type
//
- public static MethodInfo GetInvokeMethod (Type container_type, Type delegate_type)
+ public static MethodSpec GetInvokeMethod (CompilerContext ctx, TypeSpec delType)
{
- Type dt = delegate_type;
-
- Type[] g_args = null;
- if (TypeManager.IsGenericType (delegate_type)) {
- g_args = TypeManager.GetTypeArguments (delegate_type);
- delegate_type = TypeManager.DropGenericTypeArguments (delegate_type);
- }
-
- Delegate d = TypeManager.LookupDelegate (delegate_type);
- MethodInfo invoke;
- if (d != null) {
-#if GMCS_SOURCE
- if (g_args != null) {
- invoke = TypeBuilder.GetMethod (dt, d.InvokeBuilder);
-#if MS_COMPATIBLE
- ParametersCompiled p = (ParametersCompiled) d.Parameters.InflateTypes (g_args, g_args);
- TypeManager.RegisterMethod (invoke, p);
-#endif
- return invoke;
- }
-#endif
- return d.InvokeBuilder;
- }
+ var invoke = MemberCache.FindMember (delType,
+ MemberFilter.Method (InvokeMethodName, 0, null, null),
+ BindingRestriction.DeclaredOnly);
- Expression ml = Expression.MemberLookup (container_type, null, dt,
- "Invoke", Location.Null);
-
- MethodGroupExpr mg = ml as MethodGroupExpr;
- if (mg == null) {
- Report.Error (-100, Location.Null, "Internal error: could not find Invoke method!");
- // FIXME: null will cause a crash later
- return null;
- }
-
- invoke = (MethodInfo) mg.Methods[0];
-#if MS_COMPATIBLE
- if (g_args != null) {
- AParametersCollection p = TypeManager.GetParameterData (invoke);
- p = p.InflateTypes (g_args, g_args);
- TypeManager.RegisterMethod (invoke, p);
- return invoke;
- }
-#endif
+ return (MethodSpec) invoke;
+ }
- return invoke;
+ public static AParametersCollection GetParameters (CompilerContext ctx, TypeSpec delType)
+ {
+ var invoke_mb = GetInvokeMethod (ctx, delType);
+ return invoke_mb.Parameters;
}
//
// 15.2 Delegate compatibility
//
- public static bool IsTypeCovariant (Expression a, Type b)
+ public static bool IsTypeCovariant (Expression a, TypeSpec b)
{
//
// For each value parameter (a parameter with no ref or out modifier), an
return Convert.ImplicitReferenceConversionExists (a, b);
}
-
- /// <summary>
- /// Verifies whether the method in question is compatible with the delegate
- /// Returns the method itself if okay and null if not.
- /// </summary>
- public static MethodBase VerifyMethod (Type container_type, Type delegate_type,
- MethodGroupExpr old_mg, MethodBase mb)
- {
- bool is_method_definition = TypeManager.IsGenericMethodDefinition (mb);
-
- MethodInfo invoke_mb = GetInvokeMethod (container_type, delegate_type);
- if (invoke_mb == null)
- return null;
-
- if (is_method_definition)
- invoke_mb = (MethodInfo) TypeManager.DropGenericMethodArguments (invoke_mb);
-
- AParametersCollection invoke_pd = TypeManager.GetParameterData (invoke_mb);
-
-#if GMCS_SOURCE
- if (!is_method_definition && old_mg.type_arguments == null &&
- !TypeManager.InferTypeArguments (invoke_pd, ref mb))
- return null;
-#endif
- AParametersCollection pd = TypeManager.GetParameterData (mb);
-
- if (invoke_pd.Count != pd.Count)
- return null;
-
- for (int i = pd.Count; i > 0; ) {
- i--;
-
- Type invoke_pd_type = invoke_pd.Types [i];
- Type pd_type = pd.Types [i];
- Parameter.Modifier invoke_pd_type_mod = invoke_pd.FixedParameters [i].ModFlags;
- Parameter.Modifier pd_type_mod = pd.FixedParameters [i].ModFlags;
-
- invoke_pd_type_mod &= ~Parameter.Modifier.PARAMS;
- pd_type_mod &= ~Parameter.Modifier.PARAMS;
-
- if (invoke_pd_type_mod != pd_type_mod)
- return null;
-
- if (TypeManager.IsEqual (invoke_pd_type, pd_type))
- continue;
-
- if (IsTypeCovariant (new EmptyExpression (invoke_pd_type), pd_type))
- continue;
-
- return null;
- }
-
- Type invoke_mb_retval = ((MethodInfo) invoke_mb).ReturnType;
- Type mb_retval = ((MethodInfo) mb).ReturnType;
- if (TypeManager.TypeToCoreType (invoke_mb_retval) == TypeManager.TypeToCoreType (mb_retval))
- return mb;
-
- //if (!IsTypeCovariant (mb_retval, invoke_mb_retval))
- // return null;
-
- if (RootContext.Version == LanguageVersion.ISO_1)
- return null;
-
- return mb;
- }
-
- // <summary>
- // Verifies whether the invocation arguments are compatible with the
- // delegate's target method
- // </summary>
- public static bool VerifyApplicability (EmitContext ec, Type delegate_type, ref Arguments args, Location loc)
- {
- int arg_count;
-
- if (args == null)
- arg_count = 0;
- else
- arg_count = args.Count;
-
- MethodBase mb = GetInvokeMethod (ec.ContainerType, delegate_type);
- MethodGroupExpr me = new MethodGroupExpr (new MemberInfo [] { mb }, delegate_type, loc);
-
- AParametersCollection pd = TypeManager.GetParameterData (mb);
-
- int pd_count = pd.Count;
-
- bool params_method = pd.HasParams;
- bool is_params_applicable = false;
- bool is_applicable = me.IsApplicable (ec, ref args, arg_count, ref mb, ref is_params_applicable) == 0;
- if (args != null)
- arg_count = args.Count;
-
- if (!is_applicable && !params_method && arg_count != pd_count) {
- Report.Error (1593, loc, "Delegate `{0}' does not take `{1}' arguments",
- TypeManager.CSharpName (delegate_type), arg_count.ToString ());
- return false;
- }
- return me.VerifyArgumentsCompat (
- ec, ref args, arg_count, mb,
- is_params_applicable || (!is_applicable && params_method),
- false, loc);
- }
-
- public static string FullDelegateDesc (MethodBase invoke_method)
+ public static string FullDelegateDesc (MethodSpec invoke_method)
{
return TypeManager.GetFullNameSignature (invoke_method).Replace (".Invoke", "");
}
- public override MemberCache MemberCache {
- get {
- return member_cache;
- }
- }
-
public Expression InstanceExpression {
get {
return instance_expr;
instance_expr = value;
}
}
-
- public MethodBase TargetMethod {
- get {
- return delegate_method;
- }
- set {
- delegate_method = value;
- }
- }
-
- public Type TargetReturnType {
- get {
- return ret_type;
- }
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Delegate;
- }
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { return "T:"; }
- }
-
- #region IMemberContainer Members
-
- string IMemberContainer.Name
- {
- get { throw new NotImplementedException (); }
- }
-
- Type IMemberContainer.Type
- {
- get { throw new NotImplementedException (); }
- }
-
- MemberCache IMemberContainer.BaseCache
- {
- get { throw new NotImplementedException (); }
- }
-
- bool IMemberContainer.IsInterface {
- get {
- return false;
- }
- }
-
- MemberList IMemberContainer.GetMembers (MemberTypes mt, BindingFlags bf)
- {
- throw new NotImplementedException ();
- }
-
- #endregion
}
//
//
public abstract class DelegateCreation : Expression, MethodGroupExpr.IErrorHandler
{
- protected ConstructorInfo constructor_method;
- protected MethodInfo delegate_method;
- // We keep this to handle IsBase only
+ protected MethodSpec constructor_method;
protected MethodGroupExpr method_group;
- protected Expression delegate_instance_expression;
- // TODO: Should either cache it or use interface to abstract it
- public static Arguments CreateDelegateMethodArguments (AParametersCollection pd, Location loc)
+ public static Arguments CreateDelegateMethodArguments (AParametersCollection pd, TypeSpec[] types, Location loc)
{
Arguments delegate_arguments = new Arguments (pd.Count);
for (int i = 0; i < pd.Count; ++i) {
Argument.AType atype_modifier;
- Type atype = pd.Types [i];
switch (pd.FixedParameters [i].ModFlags) {
case Parameter.Modifier.REF:
atype_modifier = Argument.AType.Ref;
- //atype = atype.GetElementType ();
break;
case Parameter.Modifier.OUT:
atype_modifier = Argument.AType.Out;
- //atype = atype.GetElementType ();
break;
- case Parameter.Modifier.ARGLIST:
- // __arglist is not valid
- throw new InternalErrorException ("__arglist modifier");
default:
atype_modifier = 0;
break;
}
- delegate_arguments.Add (new Argument (new TypeExpression (atype, loc), atype_modifier));
+
+ delegate_arguments.Add (new Argument (new TypeExpression (types [i], loc), atype_modifier));
}
+
return delegate_arguments;
}
- public override Expression CreateExpressionTree (EmitContext ec)
+ public override Expression CreateExpressionTree (ResolveContext ec)
{
MemberAccess ma = new MemberAccess (new MemberAccess (new QualifiedAliasMember ("global", "System", loc), "Delegate", loc), "CreateDelegate", loc);
Arguments args = new Arguments (3);
args.Add (new Argument (new TypeOf (new TypeExpression (type, loc), loc)));
args.Add (new Argument (new NullLiteral (loc)));
- args.Add (new Argument (new TypeOfMethodInfo (delegate_method, loc)));
+ args.Add (new Argument (method_group.CreateExpressionTree (ec)));
Expression e = new Invocation (ma, args).Resolve (ec);
if (e == null)
return null;
return e.CreateExpressionTree (ec);
}
- public override Expression DoResolve (EmitContext ec)
+ protected override Expression DoResolve (ResolveContext ec)
{
- constructor_method = Delegate.GetConstructor (ec.ContainerType, type);
+ constructor_method = Delegate.GetConstructor (ec.Compiler, ec.CurrentType, type);
- MethodInfo invoke_method = Delegate.GetInvokeMethod (ec.ContainerType, type);
+ var invoke_method = Delegate.GetInvokeMethod (ec.Compiler, type);
method_group.DelegateType = type;
method_group.CustomErrorHandler = this;
- Arguments arguments = CreateDelegateMethodArguments (TypeManager.GetParameterData (invoke_method), loc);
+ Arguments arguments = CreateDelegateMethodArguments (invoke_method.Parameters, invoke_method.Parameters.Types, loc);
method_group = method_group.OverloadResolve (ec, ref arguments, false, loc);
if (method_group == null)
return null;
- delegate_method = (MethodInfo) method_group;
+ var delegate_method = method_group.BestCandidate;
if (TypeManager.IsNullableType (delegate_method.DeclaringType)) {
- Report.Error (1728, loc, "Cannot create delegate from method `{0}' because it is a member of System.Nullable<T> type",
- TypeManager.GetFullNameSignature (delegate_method));
+ ec.Report.Error (1728, loc, "Cannot create delegate from method `{0}' because it is a member of System.Nullable<T> type",
+ delegate_method.GetSignatureForError ());
return null;
}
- Invocation.IsSpecialMethodInvocation (delegate_method, loc);
+ Invocation.IsSpecialMethodInvocation (ec, delegate_method, loc);
ExtensionMethodGroupExpr emg = method_group as ExtensionMethodGroupExpr;
if (emg != null) {
- delegate_instance_expression = emg.ExtensionExpression;
- Type e_type = delegate_instance_expression.Type;
+ method_group.InstanceExpression = emg.ExtensionExpression;
+ TypeSpec e_type = emg.ExtensionExpression.Type;
if (TypeManager.IsValueType (e_type)) {
- Report.Error (1113, loc, "Extension method `{0}' of value type `{1}' cannot be used to create delegates",
- TypeManager.CSharpSignature (delegate_method), TypeManager.CSharpName (e_type));
+ ec.Report.Error (1113, loc, "Extension method `{0}' of value type `{1}' cannot be used to create delegates",
+ delegate_method.GetSignatureForError (), TypeManager.CSharpName (e_type));
}
}
- Type rt = TypeManager.TypeToCoreType (delegate_method.ReturnType);
+ TypeSpec rt = delegate_method.ReturnType;
Expression ret_expr = new TypeExpression (rt, loc);
- if (!Delegate.IsTypeCovariant (ret_expr, (TypeManager.TypeToCoreType (invoke_method.ReturnType)))) {
+ if (!Delegate.IsTypeCovariant (ret_expr, invoke_method.ReturnType)) {
Error_ConversionFailed (ec, delegate_method, ret_expr);
}
- if (Invocation.IsMethodExcluded (delegate_method, loc)) {
- Report.SymbolRelatedToPreviousError (delegate_method);
- MethodOrOperator m = TypeManager.GetMethod (delegate_method) as MethodOrOperator;
+ if (delegate_method.IsConditionallyExcluded (loc)) {
+ ec.Report.SymbolRelatedToPreviousError (delegate_method);
+ MethodOrOperator m = delegate_method.MemberDefinition as MethodOrOperator;
if (m != null && m.IsPartialDefinition) {
- Report.Error (762, loc, "Cannot create delegate from partial method declaration `{0}'",
- TypeManager.CSharpSignature (delegate_method));
+ ec.Report.Error (762, loc, "Cannot create delegate from partial method declaration `{0}'",
+ delegate_method.GetSignatureForError ());
} else {
- Report.Error (1618, loc, "Cannot create delegate with `{0}' because it has a Conditional attribute",
+ ec.Report.Error (1618, loc, "Cannot create delegate with `{0}' because it has a Conditional attribute",
TypeManager.CSharpSignature (delegate_method));
}
}
- DoResolveInstanceExpression (ec);
+ var expr = method_group.InstanceExpression;
+ if (expr != null && (expr.Type.IsGenericParameter || !TypeManager.IsReferenceType (expr.Type)))
+ method_group.InstanceExpression = new BoxedCast (expr, TypeManager.object_type);
+
eclass = ExprClass.Value;
return this;
}
-
- void DoResolveInstanceExpression (EmitContext ec)
- {
- //
- // Argument is another delegate
- //
- if (delegate_instance_expression != null)
- return;
-
- Expression instance = method_group.InstanceExpression;
- if (instance != null && instance != EmptyExpression.Null) {
- delegate_instance_expression = instance;
- Type instance_type = delegate_instance_expression.Type;
- if (TypeManager.IsValueType (instance_type) || TypeManager.IsGenericParameter (instance_type)) {
- delegate_instance_expression = new BoxedCast (
- delegate_instance_expression, TypeManager.object_type);
- }
- } else if (!delegate_method.IsStatic && !ec.IsStatic) {
- delegate_instance_expression = ec.GetThis (loc);
- }
- }
public override void Emit (EmitContext ec)
{
- if (delegate_instance_expression == null)
- ec.ig.Emit (OpCodes.Ldnull);
+ if (method_group.InstanceExpression == null)
+ ec.Emit (OpCodes.Ldnull);
else
- delegate_instance_expression.Emit (ec);
+ method_group.InstanceExpression.Emit (ec);
+
+ var delegate_method = method_group.BestCandidate;
- if (!delegate_method.DeclaringType.IsSealed && delegate_method.IsVirtual && !method_group.IsBase) {
- ec.ig.Emit (OpCodes.Dup);
- ec.ig.Emit (OpCodes.Ldvirtftn, delegate_method);
+ // Any delegate must be sealed
+ if (!delegate_method.DeclaringType.IsDelegate && delegate_method.IsVirtual && !method_group.IsBase) {
+ ec.Emit (OpCodes.Dup);
+ ec.Emit (OpCodes.Ldvirtftn, delegate_method);
} else {
- ec.ig.Emit (OpCodes.Ldftn, delegate_method);
+ ec.Emit (OpCodes.Ldftn, delegate_method);
}
- ec.ig.Emit (OpCodes.Newobj, constructor_method);
+ ec.Emit (OpCodes.Newobj, constructor_method);
}
- void Error_ConversionFailed (EmitContext ec, MethodBase method, Expression return_type)
+ void Error_ConversionFailed (ResolveContext ec, MethodSpec method, Expression return_type)
{
- MethodInfo invoke_method = Delegate.GetInvokeMethod (ec.ContainerType, type);
- string member_name = delegate_instance_expression != null ?
+ var invoke_method = Delegate.GetInvokeMethod (ec.Compiler, type);
+ string member_name = method_group.InstanceExpression != null ?
Delegate.FullDelegateDesc (method) :
TypeManager.GetFullNameSignature (method);
- Report.SymbolRelatedToPreviousError (type);
- Report.SymbolRelatedToPreviousError (method);
+ ec.Report.SymbolRelatedToPreviousError (type);
+ ec.Report.SymbolRelatedToPreviousError (method);
if (RootContext.Version == LanguageVersion.ISO_1) {
- Report.Error (410, loc, "A method or delegate `{0} {1}' parameters and return type must be same as delegate `{2} {3}' parameters and return type",
- TypeManager.CSharpName (((MethodInfo) method).ReturnType), member_name,
+ ec.Report.Error (410, loc, "A method or delegate `{0} {1}' parameters and return type must be same as delegate `{2} {3}' parameters and return type",
+ TypeManager.CSharpName (method.ReturnType), member_name,
TypeManager.CSharpName (invoke_method.ReturnType), Delegate.FullDelegateDesc (invoke_method));
return;
}
if (return_type == null) {
- Report.Error (123, loc, "A method or delegate `{0}' parameters do not match delegate `{1}' parameters",
+ ec.Report.Error (123, loc, "A method or delegate `{0}' parameters do not match delegate `{1}' parameters",
member_name, Delegate.FullDelegateDesc (invoke_method));
return;
}
- Report.Error (407, loc, "A method or delegate `{0} {1}' return type does not match delegate `{2} {3}' return type",
+ ec.Report.Error (407, loc, "A method or delegate `{0} {1}' return type does not match delegate `{2} {3}' return type",
return_type.GetSignatureForError (), member_name,
TypeManager.CSharpName (invoke_method.ReturnType), Delegate.FullDelegateDesc (invoke_method));
}
- public static MethodBase ImplicitStandardConversionExists (MethodGroupExpr mg, Type target_type)
+ public static bool ImplicitStandardConversionExists (ResolveContext ec, MethodGroupExpr mg, TypeSpec target_type)
{
if (target_type == TypeManager.delegate_type || target_type == TypeManager.multicast_delegate_type)
- return null;
-
- foreach (MethodInfo mi in mg.Methods){
- MethodBase mb = Delegate.VerifyMethod (mg.DeclaringType, target_type, mg, mi);
- if (mb != null)
- return mb;
- }
- return null;
- }
+ return false;
- public override void MutateHoistedGenericType (AnonymousMethodStorey storey)
- {
- if (delegate_instance_expression != null)
- delegate_instance_expression.MutateHoistedGenericType (storey);
+ mg.DelegateType = target_type;
+ var invoke = Delegate.GetInvokeMethod (ec.Compiler, target_type);
- delegate_method = storey.MutateGenericMethod (delegate_method);
- constructor_method = storey.MutateConstructor (constructor_method);
+ Arguments arguments = CreateDelegateMethodArguments (invoke.Parameters, invoke.Parameters.Types, mg.Location);
+ return mg.OverloadResolve (ec, ref arguments, true, mg.Location) != null;
}
#region IErrorHandler Members
- public bool NoExactMatch (EmitContext ec, MethodBase method)
+ public bool NoExactMatch (ResolveContext ec, MethodSpec method)
{
- if (TypeManager.IsGenericMethod (method))
+ if (method.IsGeneric)
return false;
Error_ConversionFailed (ec, method, null);
return true;
}
- public bool AmbiguousCall (MethodBase ambiguous)
+ public bool AmbiguousCall (ResolveContext ec, MethodGroupExpr mg, MethodSpec ambiguous)
{
return false;
}
//
public class ImplicitDelegateCreation : DelegateCreation
{
- ImplicitDelegateCreation (Type t, MethodGroupExpr mg, Location l)
+ ImplicitDelegateCreation (TypeSpec t, MethodGroupExpr mg, Location l)
{
type = t;
this.method_group = mg;
loc = l;
}
- static public Expression Create (EmitContext ec, MethodGroupExpr mge,
- Type target_type, Location loc)
+ static public Expression Create (ResolveContext ec, MethodGroupExpr mge,
+ TypeSpec target_type, Location loc)
{
ImplicitDelegateCreation d = new ImplicitDelegateCreation (target_type, mge, loc);
return d.DoResolve (ec);
//
// This constructor is invoked from the `New' expression
//
- public NewDelegate (Type type, Arguments Arguments, Location loc)
+ public NewDelegate (TypeSpec type, Arguments Arguments, Location loc)
{
this.type = type;
this.Arguments = Arguments;
this.loc = loc;
}
- public override Expression DoResolve (EmitContext ec)
+ protected override Expression DoResolve (ResolveContext ec)
{
if (Arguments == null || Arguments.Count != 1) {
- Error_InvalidDelegateArgument ();
+ ec.Report.Error (149, loc, "Method name expected");
return null;
}
method_group = e as MethodGroupExpr;
if (method_group == null) {
- if (!TypeManager.IsDelegateType (e.Type)) {
- e.Error_UnexpectedKind (ResolveFlags.MethodGroup | ResolveFlags.Type, loc);
+ if (e.Type == InternalType.Dynamic) {
+ e = Convert.ImplicitConversionRequired (ec, e, type, loc);
+ } else if (!e.Type.IsDelegate) {
+ e.Error_UnexpectedKind (ec, ResolveFlags.MethodGroup | ResolveFlags.Type, loc);
return null;
}
//
// An argument is not a method but another delegate
//
- delegate_instance_expression = e;
- method_group = new MethodGroupExpr (new MemberInfo [] {
- Delegate.GetInvokeMethod (ec.ContainerType, e.Type) }, e.Type, loc);
+ method_group = new MethodGroupExpr (Delegate.GetInvokeMethod (ec.Compiler, e.Type), e.Type, loc);
+ method_group.InstanceExpression = e;
}
return base.DoResolve (ec);
}
-
- void Error_InvalidDelegateArgument ()
- {
- Report.Error (149, loc, "Method name expected");
- }
}
- public class DelegateInvocation : ExpressionStatement {
-
+ //
+ // Invocation converted to delegate Invoke call
+ //
+ class DelegateInvocation : ExpressionStatement
+ {
readonly Expression InstanceExpr;
- Arguments Arguments;
- MethodInfo method;
+ Arguments arguments;
+ MethodSpec method;
public DelegateInvocation (Expression instance_expr, Arguments args, Location loc)
{
this.InstanceExpr = instance_expr;
- this.Arguments = args;
+ this.arguments = args;
this.loc = loc;
}
- public override Expression CreateExpressionTree (EmitContext ec)
+ public override Expression CreateExpressionTree (ResolveContext ec)
{
- Arguments args = Arguments.CreateForExpressionTree (ec, Arguments,
+ Arguments args = Arguments.CreateForExpressionTree (ec, this.arguments,
InstanceExpr.CreateExpressionTree (ec));
- return CreateExpressionFactoryCall ("Invoke", args);
+ return CreateExpressionFactoryCall (ec, "Invoke", args);
}
- public override Expression DoResolve (EmitContext ec)
+ protected override Expression DoResolve (ResolveContext ec)
{
if (InstanceExpr is EventExpr) {
- ((EventExpr) InstanceExpr).Error_CannotAssign ();
+ ((EventExpr) InstanceExpr).Error_CannotAssign (ec);
return null;
}
- Type del_type = InstanceExpr.Type;
+ TypeSpec del_type = InstanceExpr.Type;
if (del_type == null)
return null;
- if (Arguments != null){
- Arguments.Resolve (ec);
+ method = Delegate.GetInvokeMethod (ec.Compiler, del_type);
+ var mb = method;
+ var me = new MethodGroupExpr (mb, del_type, loc);
+ me.InstanceExpression = InstanceExpr;
+
+ AParametersCollection pd = mb.Parameters;
+ int pd_count = pd.Count;
+
+ int arg_count = arguments == null ? 0 : arguments.Count;
+
+ bool params_method = pd.HasParams;
+ bool is_params_applicable = false;
+ bool is_applicable = me.IsApplicable (ec, ref arguments, arg_count, ref mb, ref is_params_applicable) == 0;
+ if (arguments != null)
+ arg_count = arguments.Count;
+
+ if (!is_applicable && !params_method && arg_count != pd_count) {
+ ec.Report.Error (1593, loc, "Delegate `{0}' does not take `{1}' arguments",
+ TypeManager.CSharpName (del_type), arg_count.ToString ());
+ } else if (arguments == null || !arguments.HasDynamic) {
+ me.VerifyArgumentsCompat (ec, ref arguments, arg_count, mb,
+ is_params_applicable || (!is_applicable && params_method), false, loc);
}
-
- if (!Delegate.VerifyApplicability (ec, del_type, ref Arguments, loc))
- return null;
- method = Delegate.GetInvokeMethod (ec.ContainerType, del_type);
- type = TypeManager.TypeToCoreType (method.ReturnType);
+ type = method.ReturnType;
eclass = ExprClass.Value;
-
return this;
}
// Invocation on delegates call the virtual Invoke member
// so we are always `instance' calls
//
- Invocation.EmitCall (ec, false, InstanceExpr, method, Arguments, loc);
+ Invocation.EmitCall (ec, InstanceExpr, method, arguments, loc);
}
public override void EmitStatement (EmitContext ec)
// Pop the return value if there is one
//
if (type != TypeManager.void_type)
- ec.ig.Emit (OpCodes.Pop);
+ ec.Emit (OpCodes.Pop);
}
- public override void MutateHoistedGenericType (AnonymousMethodStorey storey)
+ public override System.Linq.Expressions.Expression MakeExpression (BuilderContext ctx)
{
- method = storey.MutateGenericMethod (method);
- type = storey.MutateType (type);
-
- if (Arguments != null)
- Arguments.MutateHoistedGenericType (storey);
-
- InstanceExpr.MutateHoistedGenericType (storey);
+ return Invocation.MakeExpression (ctx, InstanceExpr, method, arguments);
}
}
}
projects / mono.git / blobdiff