using System.Collections;\r
using System.Reflection;\r
using System.Reflection.Emit;\r
+using System.Text;\r
\r
-namespace CIR {\r
- \r
- public class Delegate : DeclSpace {\r
+namespace Mono.CSharp {\r
\r
- public string name;\r
- public string type;\r
- public int mod_flags;\r
- public Parameters Parameters;\r
- public Attributes OptAttributes;\r
- public TypeBuilder DelegateBuilder;\r
+ /// <summary>\r
+ /// Holds Delegates\r
+ /// </summary>\r
+ public class Delegate : DeclSpace {\r
+ public Expression ReturnType;\r
+ public Parameters Parameters;\r
+ public Attributes OptAttributes;\r
\r
+ public ConstructorBuilder ConstructorBuilder;\r
+ public MethodBuilder InvokeBuilder;\r
+ public MethodBuilder BeginInvokeBuilder;\r
+ public MethodBuilder EndInvokeBuilder;\r
+ \r
+ Type [] param_types;\r
+ Type ret_type;\r
+ \r
+ Expression instance_expr;\r
+ MethodBase delegate_method;\r
+ \r
const int AllowedModifiers =\r
Modifiers.NEW |\r
Modifiers.PUBLIC |\r
Modifiers.PROTECTED |\r
Modifiers.INTERNAL |\r
+ Modifiers.UNSAFE |\r
Modifiers.PRIVATE;\r
\r
- public Delegate (string type, int mod_flags, string name, Parameters param_list,\r
- Attributes attrs) : base (name)\r
+ public Delegate (TypeContainer parent, Expression type, int mod_flags,\r
+ string name, Parameters param_list,\r
+ Attributes attrs, Location l)\r
+ : base (parent, name, l)\r
{\r
- this.name = name;\r
- this.type = type;\r
- this.mod_flags = Modifiers.Check (AllowedModifiers, mod_flags, Modifiers.PUBLIC);\r
+ this.ReturnType = type;\r
+ ModFlags = Modifiers.Check (AllowedModifiers, mod_flags,\r
+ IsTopLevel ? Modifiers.INTERNAL :\r
+ Modifiers.PRIVATE, l);\r
Parameters = param_list;\r
OptAttributes = attrs;\r
}\r
\r
- public void Define (TypeContainer parent)\r
+ public override TypeBuilder DefineType ()\r
+ {\r
+ TypeAttributes attr;\r
+\r
+ if (TypeBuilder != null)\r
+ return TypeBuilder;\r
+ \r
+ if (IsTopLevel) {\r
+ ModuleBuilder builder = CodeGen.ModuleBuilder;\r
+ attr = TypeAttributes.Public | TypeAttributes.Class | TypeAttributes.Sealed;\r
+\r
+ TypeBuilder = builder.DefineType (\r
+ Name, attr, TypeManager.multicast_delegate_type);\r
+ } else {\r
+ TypeBuilder builder = Parent.TypeBuilder;\r
+ attr = TypeAttributes.NestedPublic | TypeAttributes.Class |\r
+ TypeAttributes.Sealed;\r
+\r
+ string name = Name.Substring (1 + Name.LastIndexOf ('.'));\r
+ TypeBuilder = builder.DefineNestedType (\r
+ name, attr, TypeManager.multicast_delegate_type);\r
+ }\r
+\r
+ TypeManager.AddDelegateType (Name, TypeBuilder, this);\r
+\r
+ return TypeBuilder;\r
+ }\r
+\r
+ public override bool DefineMembers (TypeContainer container)\r
+ {\r
+ return true;\r
+ }\r
+\r
+ public override bool Define (TypeContainer container)\r
+ {\r
+ MethodAttributes mattr;\r
+ int i;\r
+\r
+ // FIXME: POSSIBLY make this static, as it is always constant\r
+ //\r
+ Type [] const_arg_types = new Type [2];\r
+ const_arg_types [0] = TypeManager.object_type;\r
+ const_arg_types [1] = TypeManager.intptr_type;\r
+\r
+ mattr = MethodAttributes.RTSpecialName | MethodAttributes.SpecialName |\r
+ MethodAttributes.HideBySig | MethodAttributes.Public;\r
+\r
+ ConstructorBuilder = TypeBuilder.DefineConstructor (mattr,\r
+ CallingConventions.Standard,\r
+ const_arg_types);\r
+\r
+ ConstructorBuilder.DefineParameter (1, ParameterAttributes.None, "object");\r
+ ConstructorBuilder.DefineParameter (2, ParameterAttributes.None, "method");\r
+ //\r
+ // HACK because System.Reflection.Emit is lame\r
+ //\r
+ //\r
+ // FIXME: POSSIBLY make these static, as they are always the same\r
+ Parameter [] fixed_pars = new Parameter [2];\r
+ fixed_pars [0] = new Parameter (null, null, Parameter.Modifier.NONE, null);\r
+ fixed_pars [1] = new Parameter (null, null, Parameter.Modifier.NONE, null);\r
+ Parameters const_parameters = new Parameters (fixed_pars, null, Location);\r
+ \r
+ TypeManager.RegisterMethod (\r
+ ConstructorBuilder,\r
+ new InternalParameters (const_arg_types, const_parameters),\r
+ const_arg_types);\r
+ \r
+ \r
+ ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\r
+\r
+ //\r
+ // Here the various methods like Invoke, BeginInvoke etc are defined\r
+ //\r
+ // First, call the `out of band' special method for\r
+ // defining recursively any types we need:\r
+ \r
+ if (!Parameters.ComputeAndDefineParameterTypes (this))\r
+ return false;\r
+ \r
+ param_types = Parameters.GetParameterInfo (this);\r
+ if (param_types == null)\r
+ return false;\r
+\r
+ //\r
+ // Invoke method\r
+ //\r
+\r
+ // Check accessibility\r
+ foreach (Type partype in param_types)\r
+ if (!container.AsAccessible (partype, ModFlags)) {\r
+ Report.Error (59, Location,\r
+ "Inconsistent accessibility: parameter type `" +\r
+ TypeManager.CSharpName (partype) + "` is less " +\r
+ "accessible than delegate `" + Name + "'");\r
+ return false;\r
+ }\r
+ \r
+ ReturnType = ResolveTypeExpr (ReturnType, false, Location);\r
+ ret_type = ReturnType.Type;\r
+ if (ret_type == null)\r
+ return false;\r
+\r
+ if (!container.AsAccessible (ret_type, ModFlags)) {\r
+ Report.Error (58, Location,\r
+ "Inconsistent accessibility: return type `" +\r
+ TypeManager.CSharpName (ret_type) + "` is less " +\r
+ "accessible than delegate `" + Name + "'");\r
+ return false;\r
+ }\r
+\r
+ //\r
+ // We don't have to check any others because they are all\r
+ // guaranteed to be accessible - they are standard types.\r
+ //\r
+ \r
+ CallingConventions cc = Parameters.GetCallingConvention ();\r
+\r
+ mattr = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.Virtual;\r
+\r
+ InvokeBuilder = TypeBuilder.DefineMethod ("Invoke", \r
+ mattr, \r
+ cc,\r
+ ret_type, \r
+ param_types);\r
+\r
+ i = 0;\r
+ if (Parameters.FixedParameters != null){\r
+ int top = Parameters.FixedParameters.Length;\r
+ Parameter p;\r
+ \r
+ for (; i < top; i++) {\r
+ p = Parameters.FixedParameters [i];\r
+\r
+ InvokeBuilder.DefineParameter (\r
+ i+1, p.Attributes, p.Name);\r
+ }\r
+ }\r
+ if (Parameters.ArrayParameter != null){\r
+ Parameter p = Parameters.ArrayParameter;\r
+ \r
+ InvokeBuilder.DefineParameter (\r
+ i+1, p.Attributes, p.Name);\r
+ }\r
+ \r
+ InvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\r
+\r
+ TypeManager.RegisterMethod (InvokeBuilder,\r
+ new InternalParameters (container, Parameters),\r
+ param_types);\r
+\r
+ //\r
+ // BeginInvoke\r
+ //\r
+ int params_num = param_types.Length;\r
+ Type [] async_param_types = new Type [params_num + 2];\r
+\r
+ param_types.CopyTo (async_param_types, 0);\r
+\r
+ async_param_types [params_num] = TypeManager.asynccallback_type;\r
+ async_param_types [params_num + 1] = TypeManager.object_type;\r
+\r
+ mattr = MethodAttributes.Public | MethodAttributes.HideBySig |\r
+ MethodAttributes.Virtual | MethodAttributes.NewSlot;\r
+ \r
+ BeginInvokeBuilder = TypeBuilder.DefineMethod ("BeginInvoke",\r
+ mattr,\r
+ cc,\r
+ TypeManager.iasyncresult_type,\r
+ async_param_types);\r
+\r
+ i = 0;\r
+ if (Parameters.FixedParameters != null){\r
+ int top = Parameters.FixedParameters.Length;\r
+ Parameter p;\r
+ \r
+ for (i = 0 ; i < top; i++) {\r
+ p = Parameters.FixedParameters [i];\r
+\r
+ BeginInvokeBuilder.DefineParameter (\r
+ i+1, p.Attributes, p.Name);\r
+ }\r
+ }\r
+ if (Parameters.ArrayParameter != null){\r
+ Parameter p = Parameters.ArrayParameter;\r
+ \r
+ BeginInvokeBuilder.DefineParameter (\r
+ i+1, p.Attributes, p.Name);\r
+ i++;\r
+ }\r
+\r
+ BeginInvokeBuilder.DefineParameter (i + 1, ParameterAttributes.None, "callback");\r
+ BeginInvokeBuilder.DefineParameter (i + 2, ParameterAttributes.None, "object");\r
+ \r
+ BeginInvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\r
+\r
+ Parameter [] async_params = new Parameter [params_num + 2];\r
+ int n = 0;\r
+ if (Parameters.FixedParameters != null){\r
+ Parameters.FixedParameters.CopyTo (async_params, 0);\r
+ n = Parameters.FixedParameters.Length;\r
+ }\r
+ if (Parameters.ArrayParameter != null)\r
+ async_params [n] = Parameters.ArrayParameter;\r
+ \r
+ async_params [params_num] = new Parameter (\r
+ TypeManager.system_asynccallback_expr, "callback",\r
+ Parameter.Modifier.NONE, null);\r
+ async_params [params_num + 1] = new Parameter (\r
+ TypeManager.system_object_expr, "object",\r
+ Parameter.Modifier.NONE, null);\r
+\r
+ Parameters async_parameters = new Parameters (async_params, null, Location);\r
+ \r
+ async_parameters.ComputeAndDefineParameterTypes (this);\r
+ TypeManager.RegisterMethod (BeginInvokeBuilder,\r
+ new InternalParameters (container, async_parameters),\r
+ async_param_types);\r
+\r
+ //\r
+ // EndInvoke\r
+ //\r
+ Type [] end_param_types = new Type [1];\r
+ end_param_types [0] = TypeManager.iasyncresult_type;\r
+ \r
+ EndInvokeBuilder = TypeBuilder.DefineMethod ("EndInvoke",\r
+ mattr,\r
+ cc,\r
+ ret_type,\r
+ end_param_types);\r
+ EndInvokeBuilder.DefineParameter (1, ParameterAttributes.None, "result");\r
+ \r
+ EndInvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\r
+\r
+ Parameter [] end_params = new Parameter [1];\r
+ end_params [0] = new Parameter (\r
+ TypeManager.system_iasyncresult_expr, "result",\r
+ Parameter.Modifier.NONE, null);\r
+\r
+ TypeManager.RegisterMethod (\r
+ EndInvokeBuilder, new InternalParameters (\r
+ container,\r
+ new Parameters (\r
+ end_params, null, Location)),\r
+ end_param_types);\r
+\r
+ return true;\r
+ }\r
+\r
+ /// <summary>\r
+ /// Verifies whether the method in question is compatible with the delegate\r
+ /// Returns the method itself if okay and null if not.\r
+ /// </summary>\r
+ public static MethodBase VerifyMethod (EmitContext ec, Type delegate_type, MethodBase mb,\r
+ Location loc)\r
{\r
- TypeAttributes attr = Modifiers.TypeAttr (ModFlags, parent);\r
+ ParameterData pd = Invocation.GetParameterData (mb);\r
\r
- Type t = parent.LookupType (type, false);\r
- Type [] param_types = Parameters.GetParameterInfo (parent);\r
- Type base_type = System.Type.GetType ("System.MulticastDelegate");\r
+ int pd_count = pd.Count;\r
\r
- DelegateBuilder = parent.TypeBuilder.DefineNestedType (name, attr, base_type);\r
+ Expression ml = Expression.MemberLookup (\r
+ ec, delegate_type, "Invoke", loc);\r
\r
- // FIXME : Need to figure out how to proceed from here. \r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: could not find Invoke method!");\r
+ return null;\r
+ }\r
+\r
+ MethodBase invoke_mb = ((MethodGroupExpr) ml).Methods [0];\r
+\r
+ ParameterData invoke_pd = Invocation.GetParameterData (invoke_mb);\r
\r
+ if (invoke_pd.Count != pd_count)\r
+ return null;\r
+\r
+ for (int i = pd_count; i > 0; ) {\r
+ i--;\r
+\r
+ if (invoke_pd.ParameterType (i) == pd.ParameterType (i) &&\r
+ invoke_pd.ParameterModifier (i) == pd.ParameterModifier (i))\r
+ continue;\r
+ else\r
+ return null;\r
+ }\r
+\r
+ if (((MethodInfo) invoke_mb).ReturnType == ((MethodInfo) mb).ReturnType)\r
+ return mb;\r
+ else\r
+ return null;\r
+ }\r
+\r
+ // <summary>\r
+ // Verifies whether the invocation arguments are compatible with the\r
+ // delegate's target method\r
+ // </summary>\r
+ public static bool VerifyApplicability (EmitContext ec,\r
+ Type delegate_type,\r
+ ArrayList args,\r
+ Location loc)\r
+ {\r
+ int arg_count;\r
+\r
+ if (args == null)\r
+ arg_count = 0;\r
+ else\r
+ arg_count = args.Count;\r
+\r
+ Expression ml = Expression.MemberLookup (\r
+ ec, delegate_type, "Invoke", loc);\r
+\r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: could not find Invoke method!" + delegate_type);\r
+ return false;\r
+ }\r
+ \r
+ MethodBase mb = ((MethodGroupExpr) ml).Methods [0];\r
+ ParameterData pd = Invocation.GetParameterData (mb);\r
+\r
+ int pd_count = pd.Count;\r
+\r
+ bool not_params_method = (pd_count == 0) ||\r
+ (pd.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS);\r
+\r
+ if (not_params_method && pd_count != arg_count) {\r
+ Report.Error (1593, loc,\r
+ "Delegate '" + delegate_type.ToString ()\r
+ + "' does not take '" + arg_count + "' arguments");\r
+ return false;\r
+ }\r
+\r
+ return Invocation.VerifyArgumentsCompat (ec, args, arg_count, mb, !not_params_method,\r
+ delegate_type, loc);\r
}\r
\r
+ /// <summary>\r
+ /// Verifies whether the delegate in question is compatible with this one in\r
+ /// order to determine if instantiation from the same is possible.\r
+ /// </summary>\r
+ public static bool VerifyDelegate (EmitContext ec, Type delegate_type, Type probe_type, Location loc)\r
+ {\r
+ Expression ml = Expression.MemberLookup (\r
+ ec, delegate_type, "Invoke", loc);\r
+ \r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: could not find Invoke method!");\r
+ return false;\r
+ }\r
+ \r
+ MethodBase mb = ((MethodGroupExpr) ml).Methods [0];\r
+ ParameterData pd = Invocation.GetParameterData (mb);\r
+\r
+ Expression probe_ml = Expression.MemberLookup (\r
+ ec, delegate_type, "Invoke", loc);\r
+ \r
+ if (!(probe_ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: could not find Invoke method!");\r
+ return false;\r
+ }\r
+ \r
+ MethodBase probe_mb = ((MethodGroupExpr) probe_ml).Methods [0];\r
+ ParameterData probe_pd = Invocation.GetParameterData (probe_mb);\r
+ \r
+ if (((MethodInfo) mb).ReturnType != ((MethodInfo) probe_mb).ReturnType)\r
+ return false;\r
+\r
+ if (pd.Count != probe_pd.Count)\r
+ return false;\r
+\r
+ for (int i = pd.Count; i > 0; ) {\r
+ i--;\r
+\r
+ if (pd.ParameterType (i) != probe_pd.ParameterType (i) ||\r
+ pd.ParameterModifier (i) != probe_pd.ParameterModifier (i))\r
+ return false;\r
+ }\r
+ \r
+ return true;\r
+ }\r
+ \r
+ public static string FullDelegateDesc (Type del_type, MethodBase mb, ParameterData pd)\r
+ {\r
+ StringBuilder sb = new StringBuilder (TypeManager.CSharpName (((MethodInfo) mb).ReturnType));\r
+ \r
+ sb.Append (" " + del_type.ToString ());\r
+ sb.Append (" (");\r
+\r
+ int length = pd.Count;\r
+ \r
+ for (int i = length; i > 0; ) {\r
+ i--;\r
+\r
+ sb.Append (pd.ParameterDesc (length - i - 1));\r
+ if (i != 0)\r
+ sb.Append (", ");\r
+ }\r
+ \r
+ sb.Append (")");\r
+ return sb.ToString ();\r
+ \r
+ }\r
\r
- public string Type {\r
+ // Hack around System.Reflection as found everywhere else\r
+ public override MemberList FindMembers (MemberTypes mt, BindingFlags bf,\r
+ MemberFilter filter, object criteria)\r
+ {\r
+ ArrayList members = new ArrayList ();\r
+\r
+ if ((mt & MemberTypes.Method) != 0) {\r
+ if (ConstructorBuilder != null)\r
+ if (filter (ConstructorBuilder, criteria))\r
+ members.Add (ConstructorBuilder);\r
+\r
+ if (InvokeBuilder != null)\r
+ if (filter (InvokeBuilder, criteria))\r
+ members.Add (InvokeBuilder);\r
+\r
+ if (BeginInvokeBuilder != null)\r
+ if (filter (BeginInvokeBuilder, criteria))\r
+ members.Add (BeginInvokeBuilder);\r
+\r
+ if (EndInvokeBuilder != null)\r
+ if (filter (EndInvokeBuilder, criteria))\r
+ members.Add (EndInvokeBuilder);\r
+ }\r
+\r
+ return new MemberList (members);\r
+ }\r
+\r
+ public override MemberCache MemberCache {\r
get {\r
- return type;\r
+ return null;\r
}\r
}\r
\r
- public int ModFlags {\r
+ public Expression InstanceExpression {\r
get {\r
- return mod_flags;\r
+ return instance_expr;\r
+ }\r
+ set {\r
+ instance_expr = value;\r
+ }\r
+ }\r
+\r
+ public MethodBase TargetMethod {\r
+ get {\r
+ return delegate_method;\r
+ }\r
+ set {\r
+ delegate_method = value;\r
+ }\r
+ }\r
+\r
+ public Type TargetReturnType {\r
+ get {\r
+ return ret_type;\r
+ }\r
+ }\r
+\r
+ public Type [] ParameterTypes {\r
+ get {\r
+ return param_types;\r
+ }\r
+ }\r
+ \r
+ }\r
+\r
+ public class NewDelegate : Expression {\r
+\r
+ public ArrayList Arguments;\r
+\r
+ MethodBase constructor_method;\r
+ MethodBase delegate_method;\r
+ Expression delegate_instance_expr;\r
+\r
+ public NewDelegate (Type type, ArrayList Arguments, Location loc)\r
+ {\r
+ this.type = type;\r
+ this.Arguments = Arguments;\r
+ this.loc = loc; \r
+ }\r
+\r
+ public override Expression DoResolve (EmitContext ec)\r
+ {\r
+ if (Arguments == null) {\r
+ Report.Error (-11, loc,\r
+ "Delegate creation expression takes only one argument");\r
+ return null;\r
+ }\r
+\r
+ if (Arguments.Count != 1) {\r
+ Report.Error (-11, loc,\r
+ "Delegate creation expression takes only one argument");\r
+ return null;\r
+ }\r
+\r
+ Expression ml = Expression.MemberLookup (\r
+ ec, type, ".ctor", loc);\r
+\r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: Could not find delegate constructor!");\r
+ return null;\r
+ }\r
+\r
+ constructor_method = ((MethodGroupExpr) ml).Methods [0];\r
+ Argument a = (Argument) Arguments [0];\r
+ \r
+ if (!a.ResolveMethodGroup (ec, Location))\r
+ return null;\r
+ \r
+ Expression e = a.Expr;\r
+\r
+ Expression invoke_method = Expression.MemberLookup (\r
+ ec, type, "Invoke", MemberTypes.Method,\r
+ Expression.AllBindingFlags, loc);\r
+\r
+ if (invoke_method == null) {\r
+ Report.Error (-200, loc, "Internal error ! Could not find Invoke method!");\r
+ return null;\r
+ }\r
+\r
+ if (e is MethodGroupExpr) {\r
+ MethodGroupExpr mg = (MethodGroupExpr) e;\r
+\r
+ foreach (MethodInfo mi in mg.Methods){\r
+ delegate_method = Delegate.VerifyMethod (ec, type, mi, loc);\r
+\r
+ if (delegate_method != null)\r
+ break;\r
+ }\r
+ \r
+ if (delegate_method == null) {\r
+ string method_desc;\r
+ if (mg.Methods.Length > 1)\r
+ method_desc = mg.Methods [0].Name;\r
+ else\r
+ method_desc = Invocation.FullMethodDesc (mg.Methods [0]);\r
+\r
+ MethodBase dm = ((MethodGroupExpr) invoke_method).Methods [0];\r
+ ParameterData param = Invocation.GetParameterData (dm);\r
+ string delegate_desc = Delegate.FullDelegateDesc (type, dm, param);\r
+\r
+ Report.Error (123, loc, "Method '" + method_desc + "' does not " +\r
+ "match delegate '" + delegate_desc + "'");\r
+\r
+ return null;\r
+ }\r
+\r
+ //\r
+ // Check safe/unsafe of the delegate\r
+ //\r
+ if (!ec.InUnsafe){\r
+ ParameterData param = Invocation.GetParameterData (delegate_method);\r
+ int count = param.Count;\r
+ \r
+ for (int i = 0; i < count; i++){\r
+ if (param.ParameterType (i).IsPointer){\r
+ Expression.UnsafeError (loc);\r
+ return null;\r
+ }\r
+ }\r
+ }\r
+ \r
+ if (mg.InstanceExpression != null)\r
+ delegate_instance_expr = mg.InstanceExpression.Resolve (ec);\r
+ else {\r
+ if (!ec.IsStatic)\r
+ delegate_instance_expr = ec.This;\r
+ else\r
+ delegate_instance_expr = null;\r
+ }\r
+\r
+ if (delegate_instance_expr != null)\r
+ if (delegate_instance_expr.Type.IsValueType)\r
+ delegate_instance_expr = new BoxedCast (delegate_instance_expr);\r
+ \r
+ eclass = ExprClass.Value;\r
+ return this;\r
+ }\r
+\r
+ Type e_type = e.Type;\r
+\r
+ if (!TypeManager.IsDelegateType (e_type)) {\r
+ Report.Error (-12, loc, "Cannot create a delegate from something " +\r
+ "not a delegate or a method.");\r
+ return null;\r
+ }\r
+\r
+ // This is what MS' compiler reports. We could always choose\r
+ // to be more verbose and actually give delegate-level specifics\r
+ \r
+ if (!Delegate.VerifyDelegate (ec, type, e_type, loc)) {\r
+ Report.Error (29, loc, "Cannot implicitly convert type '" + e_type + "' " +\r
+ "to type '" + type + "'");\r
+ return null;\r
}\r
+ \r
+ delegate_instance_expr = e;\r
+ delegate_method = ((MethodGroupExpr) invoke_method).Methods [0];\r
+ \r
+ eclass = ExprClass.Value;\r
+ return this;\r
}\r
\r
+ public override void Emit (EmitContext ec)\r
+ {\r
+ if (delegate_instance_expr == null ||\r
+ delegate_method.IsStatic)\r
+ ec.ig.Emit (OpCodes.Ldnull);\r
+ else\r
+ delegate_instance_expr.Emit (ec);\r
+ \r
+ if (delegate_method.IsVirtual) {\r
+ ec.ig.Emit (OpCodes.Dup);\r
+ ec.ig.Emit (OpCodes.Ldvirtftn, (MethodInfo) delegate_method);\r
+ } else\r
+ ec.ig.Emit (OpCodes.Ldftn, (MethodInfo) delegate_method);\r
+ ec.ig.Emit (OpCodes.Newobj, (ConstructorInfo) constructor_method);\r
+ }\r
+ }\r
+\r
+ public class DelegateInvocation : ExpressionStatement {\r
+\r
+ public Expression InstanceExpr;\r
+ public ArrayList Arguments;\r
+\r
+ MethodBase method;\r
+ \r
+ public DelegateInvocation (Expression instance_expr, ArrayList args, Location loc)\r
+ {\r
+ this.InstanceExpr = instance_expr;\r
+ this.Arguments = args;\r
+ this.loc = loc;\r
+ }\r
+\r
+ public override Expression DoResolve (EmitContext ec)\r
+ {\r
+ if (InstanceExpr is EventExpr) {\r
+ \r
+ EventInfo ei = ((EventExpr) InstanceExpr).EventInfo;\r
+ \r
+ Expression ml = MemberLookup (\r
+ ec, ec.ContainerType, ei.Name,\r
+ MemberTypes.Event, AllBindingFlags | BindingFlags.DeclaredOnly, loc);\r
+\r
+ if (ml == null) {\r
+ //\r
+ // If this is the case, then the Event does not belong \r
+ // to this Type and so, according to the spec\r
+ // cannot be accessed directly\r
+ //\r
+ // Note that target will not appear as an EventExpr\r
+ // in the case it is being referenced within the same type container;\r
+ // it will appear as a FieldExpr in that case.\r
+ //\r
+ \r
+ Assign.error70 (ei, loc);\r
+ return null;\r
+ }\r
+ }\r
+ \r
+ \r
+ Type del_type = InstanceExpr.Type;\r
+ if (del_type == null)\r
+ return null;\r
+ \r
+ if (Arguments != null){\r
+ foreach (Argument a in Arguments){\r
+ if (!a.Resolve (ec, loc))\r
+ return null;\r
+ }\r
+ }\r
+ \r
+ if (!Delegate.VerifyApplicability (ec, del_type, Arguments, loc))\r
+ return null;\r
+\r
+ Expression lookup = Expression.MemberLookup (ec, del_type, "Invoke", loc);\r
+ if (!(lookup is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error: could not find Invoke method!");\r
+ return null;\r
+ }\r
+ \r
+ method = ((MethodGroupExpr) lookup).Methods [0];\r
+ type = ((MethodInfo) method).ReturnType;\r
+ eclass = ExprClass.Value;\r
+ \r
+ return this;\r
+ }\r
+\r
+ public override void Emit (EmitContext ec)\r
+ {\r
+ Delegate del = TypeManager.LookupDelegate (InstanceExpr.Type);\r
+\r
+ //\r
+ // Invocation on delegates call the virtual Invoke member\r
+ // so we are always `instance' calls\r
+ //\r
+ Invocation.EmitCall (ec, false, false, InstanceExpr, method, Arguments, loc);\r
+ }\r
+\r
+ public override void EmitStatement (EmitContext ec)\r
+ {\r
+ Emit (ec);\r
+ // \r
+ // Pop the return value if there is one\r
+ //\r
+ if (method is MethodInfo){\r
+ if (((MethodInfo) method).ReturnType != TypeManager.void_type)\r
+ ec.ig.Emit (OpCodes.Pop);\r
+ }\r
+ }\r
\r
}\r
- \r
}\r
projects / mono.git / blobdiff