using System.Reflection.Emit;\r
using System.Text;\r
\r
-namespace CIR {\r
- \r
- public class Delegate {\r
+namespace Mono.CSharp {\r
\r
- public readonly string Name;\r
- public readonly string ReturnType;\r
- public int mod_flags;\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
- public TypeBuilder TypeBuilder;\r
\r
public ConstructorBuilder ConstructorBuilder;\r
public MethodBuilder InvokeBuilder;\r
public MethodBuilder BeginInvokeBuilder;\r
public MethodBuilder EndInvokeBuilder;\r
\r
- public readonly RootContext RootContext;\r
-\r
Type [] param_types;\r
Type ret_type;\r
\r
Expression instance_expr;\r
MethodBase delegate_method;\r
\r
- Location loc;\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 (RootContext rc, string type, int mod_flags, string name, Parameters param_list,\r
- Attributes attrs, Location loc)\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.RootContext = rc;\r
- this.Name = name;\r
this.ReturnType = type;\r
- this.mod_flags = Modifiers.Check (AllowedModifiers, mod_flags, Modifiers.PUBLIC);\r
+ ModFlags = Modifiers.Check (AllowedModifiers, mod_flags,\r
+ IsTopLevel ? Modifiers.INTERNAL :\r
+ Modifiers.PRIVATE, l);\r
Parameters = param_list;\r
OptAttributes = attrs;\r
- this.loc = loc;\r
}\r
\r
- public void DefineDelegate (object parent_builder)\r
+ public override TypeBuilder DefineType ()\r
{\r
TypeAttributes attr;\r
+\r
+ if (TypeBuilder != null)\r
+ return TypeBuilder;\r
\r
- if (parent_builder is ModuleBuilder) {\r
- ModuleBuilder builder = (ModuleBuilder) parent_builder;\r
- \r
+ if (IsTopLevel) {\r
+ ModuleBuilder builder = CodeGen.ModuleBuilder;\r
attr = TypeAttributes.Public | TypeAttributes.Class | TypeAttributes.Sealed;\r
\r
- TypeBuilder = builder.DefineType (Name, attr, TypeManager.delegate_type);\r
- \r
+ TypeBuilder = builder.DefineType (\r
+ Name, attr, TypeManager.multicast_delegate_type);\r
} else {\r
- TypeBuilder builder = (TypeBuilder) parent_builder;\r
- \r
- attr = TypeAttributes.NestedPublic | TypeAttributes.Class | TypeAttributes.Sealed;\r
-\r
- TypeBuilder = builder.DefineNestedType (Name, attr, TypeManager.delegate_type);\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
- RootContext.TypeManager.AddDelegateType (Name, TypeBuilder, this);\r
+ TypeManager.AddDelegateType (Name, TypeBuilder, this);\r
+\r
+ return TypeBuilder;\r
}\r
\r
- public void Populate (TypeContainer parent)\r
+ public override bool Define (TypeContainer container)\r
{\r
-\r
MethodAttributes mattr;\r
- \r
- Type [] const_arg_types = new Type [2];\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
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
- ConstructorBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\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
- param_types = Parameters.GetParameterInfo (parent);\r
- ret_type = parent.LookupType (ReturnType, false);\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
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
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 | MethodAttributes.Virtual |\r
- MethodAttributes.NewSlot;\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
-\r
end_param_types [0] = TypeManager.iasyncresult_type;\r
\r
EndInvokeBuilder = TypeBuilder.DefineMethod ("EndInvoke",\r
cc,\r
ret_type,\r
end_param_types);\r
-\r
- EndInvokeBuilder.SetImplementationFlags (MethodImplAttributes.Runtime);\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
- public MethodBase VerifyMethod (MethodBase mb, Location loc)\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
ParameterData pd = Invocation.GetParameterData (mb);\r
\r
- bool mismatch = false;\r
- for (int i = param_types.Length; i > 0; ) {\r
- i--;\r
+ int pd_count = pd.Count;\r
\r
- if (param_types [i] == pd.ParameterType (i))\r
- continue;\r
- else {\r
- mismatch = true;\r
- break;\r
- }\r
- }\r
+ Expression ml = Expression.MemberLookup (\r
+ ec, delegate_type, "Invoke", loc);\r
\r
- if (mismatch) {\r
- Report.Error (123, loc, "Method '" + Invocation.FullMethodDesc (mb) + "' does not match " +\r
- "delegate '" + FullDelegateDesc () + "'");\r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error : could not find Invoke method!");\r
return null;\r
}\r
\r
- if (ret_type == ((MethodInfo) mb).ReturnType)\r
- return mb;\r
- else\r
- mismatch = true;\r
+ MethodBase invoke_mb = ((MethodGroupExpr) ml).Methods [0];\r
+\r
+ ParameterData invoke_pd = Invocation.GetParameterData (invoke_mb);\r
\r
- if (mismatch) {\r
- Report.Error (123, loc, "Method '" + Invocation.FullMethodDesc (mb) + "' does not match " +\r
- "delegate '" + FullDelegateDesc () + "'");\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
+ continue;\r
+ else\r
+ return null;\r
}\r
\r
- return null;\r
+ if (((MethodInfo) invoke_mb).ReturnType == ((MethodInfo) mb).ReturnType)\r
+ return mb;\r
+ else\r
+ return null;\r
}\r
\r
- public bool VerifyApplicability (EmitContext ec, ArrayList args, Location loc)\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
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!");\r
+ return false;\r
+ }\r
\r
- if (param_types.Length != arg_count) {\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.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS);\r
+\r
+ if (not_params_method && pd_count != arg_count) {\r
Report.Error (1593, loc,\r
- "Delegate '" + Name + "' does not take '" + arg_count + "' arguments");\r
+ "Delegate '" + delegate_type.ToString ()\r
+ + "' does not take '" + arg_count + "' arguments");\r
return false;\r
}\r
\r
- for (int i = arg_count; i > 0;) {\r
- i--;\r
- Expression conv;\r
- Argument a = (Argument) args [i];\r
- Expression a_expr = a.Expr;\r
- \r
- if (param_types [i] != a_expr.Type) {\r
- \r
- conv = Expression.ConvertImplicitStandard (ec, a_expr, param_types [i], loc);\r
-\r
- if (conv == null) {\r
- Report.Error (1594, loc,\r
- "Delegate '" + Name + "' has some invalid arguments.");\r
-\r
- Report.Error (1503, loc,\r
- "Argument " + (i+1) +\r
- ": Cannot convert from '" +\r
- TypeManager.CSharpName (a_expr.Type)\r
- + "' to '" + TypeManager.CSharpName (param_types [i]) + "'");\r
- return false;\r
- }\r
-\r
- if (a_expr != conv)\r
- a.Expr = conv;\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 string FullDelegateDesc ()\r
+ \r
+ public static string FullDelegateDesc (Type del_type, MethodBase mb, ParameterData pd)\r
{\r
- StringBuilder sb = new StringBuilder (TypeManager.CSharpName (System.Type.GetType (ReturnType)));\r
+ StringBuilder sb = new StringBuilder (TypeManager.CSharpName (((MethodInfo) mb).ReturnType));\r
\r
- sb.Append (" " + Name);\r
+ sb.Append (" " + del_type.ToString ());\r
sb.Append (" (");\r
\r
- int length = param_types.Length;\r
+ int length = pd.Count;\r
\r
for (int i = length; i > 0; ) {\r
i--;\r
\r
- sb.Append (TypeManager.CSharpName (param_types [length - i - 1]));\r
+ sb.Append (TypeManager.CSharpName (pd.ParameterType (length - i - 1)));\r
if (i != 0)\r
sb.Append (", ");\r
}\r
\r
}\r
\r
+ // Hack around System.Reflection as found everywhere else\r
+ public MemberInfo [] FindMembers (MemberTypes mt, BindingFlags bf, 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
+ int count = members.Count;\r
+\r
+ if (count > 0) {\r
+ MemberInfo [] mi = new MemberInfo [count];\r
+ members.CopyTo (mi, 0);\r
+ return mi;\r
+ }\r
+\r
+ return null;\r
+ }\r
+ \r
public void CloseDelegate ()\r
{\r
TypeBuilder.CreateType ();\r
}\r
\r
- public int ModFlags {\r
- get {\r
- return mod_flags;\r
- }\r
- }\r
-\r
public Expression InstanceExpression {\r
get {\r
return instance_expr;\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
MethodBase delegate_method;\r
Expression delegate_instance_expr;\r
\r
- Location Location;\r
- \r
public NewDelegate (Type type, ArrayList Arguments, Location loc)\r
{\r
this.type = type;\r
this.Arguments = Arguments;\r
- this.Location = loc; \r
+ this.loc = loc; \r
}\r
\r
public override Expression DoResolve (EmitContext ec)\r
{\r
- Delegate del = TypeManager.LookupDelegate (type);\r
- constructor_method = del.ConstructorBuilder;\r
- \r
if (Arguments == null) {\r
- Report.Error (-11, Location,\r
+ Report.Error (-11, loc,\r
"Delegate creation expression takes only one argument");\r
return null;\r
}\r
- \r
+\r
if (Arguments.Count != 1) {\r
- Report.Error (-11, Location,\r
+ Report.Error (-11, loc,\r
"Delegate creation expression takes only one argument");\r
return null;\r
}\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.Resolve (ec))\r
+ if (!a.ResolveMethodGroup (ec, Location))\r
return null;\r
\r
Expression e = a.Expr;\r
- \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
- delegate_method = del.VerifyMethod (mg.Methods [0], Location);\r
- \r
- if (delegate_method == null)\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
if (mg.InstanceExpression != null)\r
delegate_instance_expr = mg.InstanceExpression.Resolve (ec);\r
- else\r
- delegate_instance_expr = null;\r
- \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
- \r
- del.InstanceExpression = delegate_instance_expr;\r
- del.TargetMethod = delegate_method;\r
- \r
eclass = ExprClass.Value;\r
return this;\r
- } else {\r
- Report.Error (-200, Location, "Cannot handle delegate instantiation from other delegates");\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
+ 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
}\r
\r
- public class DelegateInvocation : Expression {\r
+ public class DelegateInvocation : ExpressionStatement {\r
\r
public Expression InstanceExpr;\r
public ArrayList Arguments;\r
- public Location Location;\r
\r
MethodBase method;\r
\r
{\r
this.InstanceExpr = instance_expr;\r
this.Arguments = args;\r
- this.Location = loc;\r
+ this.loc = loc;\r
}\r
\r
public override Expression DoResolve (EmitContext ec)\r
{\r
- Delegate del = TypeManager.LookupDelegate (InstanceExpr.Type);\r
-\r
- if (del == null)\r
- return null;\r
-\r
- if (del.TargetMethod == null)\r
+ Type del_type = InstanceExpr.Type;\r
+ if (del_type == null)\r
return null;\r
\r
if (Arguments != null){\r
- for (int i = Arguments.Count; i > 0;){\r
- --i;\r
- Argument a = (Argument) Arguments [i];\r
- \r
- if (!a.Resolve (ec))\r
+ foreach (Argument a in Arguments){\r
+ if (!a.Resolve (ec, loc))\r
return null;\r
}\r
}\r
\r
- if (!del.VerifyApplicability (ec, Arguments, Location))\r
+ if (!Delegate.VerifyApplicability (ec, del_type, Arguments, loc))\r
return null;\r
+\r
+ Expression ml = Expression.MemberLookup (ec, del_type, "Invoke", loc);\r
+ if (!(ml is MethodGroupExpr)) {\r
+ Report.Error (-100, loc, "Internal error : could not find Invoke method!");\r
+ return null;\r
+ }\r
\r
- method = del.InvokeBuilder;\r
+ method = ((MethodGroupExpr) ml).Methods [0];\r
type = ((MethodInfo) method).ReturnType;\r
- \r
eclass = ExprClass.Value;\r
\r
return this;\r
public override void Emit (EmitContext ec)\r
{\r
Delegate del = TypeManager.LookupDelegate (InstanceExpr.Type);\r
- Invocation.EmitCall (ec, del.TargetMethod.IsStatic, InstanceExpr, method, Arguments);\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
projects / mono.git / blobdiff