+
//
// class.cs: Class and Struct handlers
//
-// Author: Miguel de Icaza (miguel@gnu.org)
+// Authors: Miguel de Icaza (miguel@gnu.org)
+// Martin Baulig (martin@gnome.org)
//
// Licensed under the terms of the GNU GPL
//
-// (C) 2001 Ximian, Inc (http://www.ximian.com)
+// (C) 2001, 2002 Ximian, Inc (http://www.ximian.com)
//
//
+using System;
using System.Collections;
using System.Reflection;
using System.Reflection.Emit;
-using System;
using System.Runtime.CompilerServices;
+using System.Diagnostics.SymbolStore;
namespace Mono.CSharp {
// Holds the list of
ArrayList interfaces;
+ // Holds order in which interfaces must be closed
+ ArrayList interface_order;
+
// Holds the methods.
ArrayList methods;
// Holds the operators
ArrayList operators;
+ // The emit context for toplevel objects.
+ EmitContext ec;
+
//
// Pointers to the default constructor and the default static constructor
//
// Whether we have seen a static constructor for this class or not
//
bool have_static_constructor = false;
+
+ //
+ // Whether we have at least one non-static field
+ //
+ bool have_nonstatic_fields = false;
//
// This one is computed after we can distinguish interfaces
// Information in the case we are an attribute type
- public AttributeTargets Targets;
- public bool AllowMultiple;
+ public AttributeTargets Targets = AttributeTargets.All;
+ public bool AllowMultiple = false;
public bool Inherited;
+
+ // The interfaces we implement.
+ Type [] ifaces;
+ //
+ // The indexer name for this class
+ //
+ public string IndexerName;
public TypeContainer (TypeContainer parent, string name, Location l)
: base (parent, name, l)
if (value != null && (!(value is Method)))
return AdditionResult.NameExists;
+ if (name == Basename)
+ return AdditionResult.EnclosingClash;
+
if (methods == null)
methods = new ArrayList ();
- methods.Add (method);
+ if (method.Name.IndexOf (".") != -1)
+ methods.Insert (0, method);
+ else
+ methods.Add (method);
+
if (value != null)
DefineName (name, method);
{
AdditionResult res;
string name = field.Name;
-
+
if ((res = IsValid (name)) != AdditionResult.Success)
return res;
-
+
if (fields == null)
fields = new ArrayList ();
-
+
fields.Add (field);
- if (field.Initializer != null){
+ if (field.HasInitializer){
if ((field.ModFlags & Modifiers.STATIC) != 0){
if (initialized_static_fields == null)
initialized_static_fields = new ArrayList ();
initialized_fields.Add (field);
}
}
-
+
+ if ((field.ModFlags & Modifiers.STATIC) == 0)
+ have_nonstatic_fields = true;
+
DefineName (name, field);
return AdditionResult.Success;
}
if (properties == null)
properties = new ArrayList ();
- properties.Add (prop);
+ if (prop.Name.IndexOf (".") != -1)
+ properties.Insert (0, prop);
+ else
+ properties.Add (prop);
DefineName (name, prop);
return AdditionResult.Success;
if (indexers == null)
indexers = new ArrayList ();
- indexers.Add (i);
+ if (i.InterfaceType != null)
+ indexers.Insert (0, i);
+ else
+ indexers.Add (i);
return AdditionResult.Success;
}
return AdditionResult.Success;
}
+
+ public void RegisterOrder (Interface iface)
+ {
+ if (interface_order == null)
+ interface_order = new ArrayList ();
+
+ interface_order.Add (iface);
+ }
public ArrayList Types {
get {
get {
return fields;
}
+
+ set {
+ fields = value;
+ }
}
public ArrayList InstanceConstructors {
}
}
- //
- // root_types contains all the types. All TopLevel types
- // hence have a parent that points to `root_types', that is
- // why there is a non-obvious test down here.
- //
- public bool IsTopLevel {
- get {
- if (Parent != null){
- if (Parent.Parent == null)
- return true;
- }
- return false;
- }
- }
-
public bool HaveStaticConstructor {
get {
return have_static_constructor;
//
// Emits the instance field initializers
//
- public bool EmitFieldInitializers (EmitContext ec, bool is_static)
+ public bool EmitFieldInitializers (EmitContext ec)
{
ArrayList fields;
ILGenerator ig = ec.ig;
-
- if (is_static)
+ Expression instance_expr;
+
+ if (ec.IsStatic){
fields = initialized_static_fields;
- else
+ instance_expr = null;
+ } else {
fields = initialized_fields;
+ instance_expr = new This (Location.Null).Resolve (ec);
+ }
if (fields == null)
return true;
-
+
foreach (Field f in fields){
- Object init = f.Initializer;
+ Expression e = f.GetInitializerExpression (ec);
+ if (e == null)
+ return false;
+
+ Location l = f.Location;
+ FieldExpr fe = new FieldExpr (f.FieldBuilder, l);
+ fe.InstanceExpression = instance_expr;
+ Expression a = new Assign (fe, e, l);
- Expression e;
- if (init is Expression)
- e = (Expression) init;
+ a = a.Resolve (ec);
+ if (a == null)
+ return false;
+
+ if (a is ExpressionStatement)
+ ((ExpressionStatement) a).EmitStatement (ec);
else {
- string base_type = f.Type.Substring (0, f.Type.IndexOf ("["));
- string rank = f.Type.Substring (f.Type.IndexOf ("["));
- e = new ArrayCreation (base_type, rank, (ArrayList) init, f.Location);
+ throw new Exception ("Assign.Resolve returned a non ExpressionStatement");
}
-
- e = e.Resolve (ec);
- if (e == null)
- return false;
-
- if (!is_static)
- ig.Emit (OpCodes.Ldarg_0);
-
- e.Emit (ec);
-
- if (is_static)
- ig.Emit (OpCodes.Stsfld, f.FieldBuilder);
- else
- ig.Emit (OpCodes.Stfld, f.FieldBuilder);
-
}
-
+
return true;
}
Constructor c;
int mods = 0;
- c = new Constructor (Basename, Parameters.GetEmptyReadOnlyParameters (),
- new ConstructorBaseInitializer (null, new Location (-1)),
- new Location (-1));
+ c = new Constructor (Basename, Parameters.EmptyReadOnlyParameters,
+ new ConstructorBaseInitializer (
+ null, Parameters.EmptyReadOnlyParameters,
+ Location.Null),
+ Location.Null);
if (is_static)
mods = Modifiers.STATIC;
}
}
- struct TypeAndMethods {
- public Type type;
- public MethodInfo [] methods;
-
- // Far from ideal, but we want to avoid creating a copy
- // of methods above.
- public Type [][] args;
-
- //
- // This flag on the method says `We found a match, but
- // because it was private, we could not use the match
- //
- public bool [] found;
- }
-
- //
- // This array keeps track of the pending implementations
- //
- TypeAndMethods [] pending_implementations;
-
- //
- // Returns a list of the abstract methods that are exposed by all of our
- // parents that we must implement. Notice that this `flattens' the
- // method search space, and takes into account overrides.
- //
- ArrayList GetAbstractMethods (Type t)
- {
- ArrayList list = null;
- bool searching = true;
- Type current_type = t;
-
- do {
- MemberInfo [] mi;
-
- mi = FindMembers (
- current_type, MemberTypes.Method,
- BindingFlags.Public | BindingFlags.Instance |
- BindingFlags.DeclaredOnly,
- virtual_method_filter, null);
-
- if (current_type == TypeManager.object_type)
- searching = false;
- else {
- current_type = current_type.BaseType;
- if (!current_type.IsAbstract)
- searching = false;
- }
-
- if (mi == null)
- continue;
-
- int count = mi.Length;
- if (count == 0)
- continue;
-
- if (count == 1 && !(mi [0] is MethodBase))
- searching = false;
- else
- list = Expression.CopyNewMethods (list, mi);
- } while (searching);
-
- if (list == null)
- return null;
-
- for (int i = 0; i < list.Count; i++){
- while (list.Count > i && !((MethodInfo) list [i]).IsAbstract)
- list.RemoveAt (i);
- }
-
- if (list.Count == 0)
- return null;
-
- return list;
- }
-
- //
- // Registers the required method implementations for this class
- //
- // Register method implementations are either abstract methods
- // flagged as such on the base class or interface methods
- //
- public void RegisterRequiredImplementations ()
- {
- Type [] ifaces = TypeBuilder.GetInterfaces ();
- Type b = TypeBuilder.BaseType;
- int icount = 0;
-
- if (false)
- {
- Type x = TypeBuilder;
-
- while (x != null){
- Type [] iff = x.GetInterfaces ();
- Console.WriteLine ("Type: " + x.Name);
-
- foreach (Type tt in iff){
- Console.WriteLine (" Iface: " + tt.Name);
- }
- x = x.BaseType;
- }
- }
-
- icount = ifaces.Length;
-
- //
- // If we are implementing an abstract class, and we are not
- // ourselves abstract, and there are abstract methods (C# allows
- // abstract classes that have no abstract methods), then allocate
- // one slot.
- //
- // We also pre-compute the methods.
- //
- bool implementing_abstract = (b.IsAbstract && !TypeBuilder.IsAbstract);
- ArrayList abstract_methods = null;
-
- if (implementing_abstract){
- abstract_methods = GetAbstractMethods (b);
-
- if (abstract_methods == null)
- implementing_abstract = false;
- }
-
- int total = icount + (implementing_abstract ? 1 : 0);
- if (total == 0)
- return;
-
- pending_implementations = new TypeAndMethods [total];
-
- int i = 0;
- if (ifaces != null){
- foreach (Type t in ifaces){
- MethodInfo [] mi;
-
- if (t is TypeBuilder){
- Interface iface;
-
- iface = RootContext.TypeManager.LookupInterface (t);
-
- mi = iface.GetMethods ();
- } else
- mi = t.GetMethods ();
-
- int count = mi.Length;
- pending_implementations [i].type = t;
- pending_implementations [i].methods = mi;
- pending_implementations [i].args = new Type [count][];
- pending_implementations [i].found = new bool [count];
-
- int j = 0;
- foreach (MethodInfo m in mi){
- Type [] types = TypeManager.GetArgumentTypes (m);
-
- pending_implementations [i].args [j] = types;
- j++;
- }
- i++;
- }
- }
-
- if (abstract_methods != null){
- int count = abstract_methods.Count;
- pending_implementations [i].methods = new MethodInfo [count];
-
- abstract_methods.CopyTo (pending_implementations [i].methods, 0);
- pending_implementations [i].found = new bool [count];
- pending_implementations [i].args = new Type [count][];
- pending_implementations [i].type = TypeBuilder;
-
- int j = 0;
- foreach (MemberInfo m in abstract_methods){
- MethodInfo mi = (MethodInfo) m;
-
- Type [] types = TypeManager.GetArgumentTypes (mi);
-
- pending_implementations [i].args [j] = types;
- j++;
- }
- }
- }
-
- public static string MakeFQN (string nsn, string name)
- {
- string prefix = (nsn == "" ? "" : nsn + ".");
-
- return prefix + name;
- }
-
- Type LookupInterfaceOrClass (object builder, string ns, string name, bool is_class, out bool error)
- {
- TypeContainer parent;
- Type t;
-
- error = false;
- name = MakeFQN (ns, name);
-
- t = RootContext.TypeManager.LookupType (name);
- if (t != null)
- return t;
-
- if (is_class)
- parent = (Class) RootContext.Tree.Classes [name];
- else
- parent = (Struct) RootContext.Tree.Structs [name];
-
- if (parent == null) {
- Enum en = null;
-
- if (RootContext.Tree.Enums != null)
- en = (Enum) RootContext.Tree.Enums [name];
-
- if (en != null) {
- t = en.DefineEnum (builder);
-
- if (t != null)
- return t;
- }
- }
-
- if (parent != null){
- t = parent.DefineType (builder);
- if (t == null){
- Report.Error (146, "Class definition is circular: `"+name+"'");
- error = true;
- return null;
- }
-
- return t;
- }
-
- return null;
- }
-
- //
- // returns the type for an interface or a class, this will recursively
- // try to define the types that it depends on.
- //
- Type GetInterfaceOrClass (object builder, string name, bool is_class)
- {
- Type t;
- bool error;
-
- //
- // Attempt to lookup the class on our namespace and all it's implicit parents
- //
- for (string ns = Namespace.Name; ns != null; ns = RootContext.ImplicitParent (ns)) {
-
- t = LookupInterfaceOrClass (builder, ns, name, is_class, out error);
- if (error)
- return null;
-
- if (t != null)
- return t;
- }
-
- //
- // Attempt to do a direct unqualified lookup
- //
- t = LookupInterfaceOrClass (builder, "", name, is_class, out error);
- if (error)
- return null;
-
- if (t != null)
- return t;
-
- //
- // Attempt to lookup the class on any of the `using'
- // namespaces
- //
-
- for (Namespace ns = Namespace; ns != null; ns = ns.Parent){
-
- t = LookupInterfaceOrClass (builder, ns.Name, name, is_class, out error);
- if (error)
- return null;
-
- if (t != null)
- return t;
-
- //
- // Now check the using clause list
- //
- ArrayList using_list = ns.UsingTable;
-
- if (using_list == null)
- continue;
-
- foreach (string n in using_list){
- t = LookupInterfaceOrClass (builder, n, name, is_class, out error);
- if (error)
- return null;
-
- if (t != null)
- return t;
- }
-
- }
-
- Report.Error (246, Location, "Can not find type `"+name+"'");
- return null;
- }
+ /// <remarks>
+ /// The pending methods that need to be implemented (interfaces or abstract methods)
+ /// </remarks>
+ public PendingImplementation Pending;
/// <summary>
/// This function computes the Base class and also the
/// The @parent argument is set to the parent object or null
/// if this is `System.Object'.
/// </summary>
- Type [] GetClassBases (object builder, bool is_class, out Type parent, out bool error)
+ Type [] GetClassBases (bool is_class, out Type parent, out bool error)
{
ArrayList bases = Bases;
int count;
count = bases.Count;
if (is_class){
- string name = (string) bases [0];
- Type first = GetInterfaceOrClass (builder, name, is_class);
+ Expression name = (Expression) bases [0];
+ name = ResolveTypeExpr (name, false, Location);
- if (first == null){
+ if (name == null){
error = true;
return null;
}
-
+
+ Type first = name.Type;
+
if (first.IsClass){
parent = first;
start = 1;
parent = TypeManager.object_type;
start = 0;
}
+
+ if (!AsAccessible (parent, ModFlags))
+ Report.Error (60, Location,
+ "Inconsistent accessibility: base class `" +
+ TypeManager.CSharpName (parent) + "' is less " +
+ "accessible than class `" +
+ Name + "'");
+
} else {
start = 0;
}
Type [] ifaces = new Type [count-start];
for (i = start, j = 0; i < count; i++, j++){
- string name = (string) bases [i];
- Type t = GetInterfaceOrClass (builder, name, is_class);
-
+ Expression name = (Expression) bases [i];
+ Expression resolved = ResolveTypeExpr (name, false, Location);
+ bases [i] = resolved;
+ Type t = resolved.Type;
+
if (t == null){
error = true;
return null;
return null;
}
}
-
+
+ for (int x = 0; x < j; x++) {
+ if (t == ifaces [x]) {
+ Report.Error (528, "`" + name + "' is already listed in interface list");
+ error = true;
+ return null;
+ }
+ }
+
ifaces [j] = t;
}
- return ifaces;
+ return TypeManager.ExpandInterfaces (ifaces);
}
//
// Defines the type in the appropriate ModuleBuilder or TypeBuilder.
//
- public TypeBuilder DefineType (object parent_builder)
+ public override TypeBuilder DefineType ()
{
Type parent;
- Type [] ifaces;
bool error;
bool is_class;
return null;
InTransit = true;
-
+
if (this is Class)
is_class = true;
else
is_class = false;
- ifaces = GetClassBases (parent_builder, is_class, out parent, out error);
+ ec = new EmitContext (this, Mono.CSharp.Location.Null, null, null, ModFlags);
+
+ ifaces = GetClassBases (is_class, out parent, out error);
if (error)
return null;
- if (this is Class){
+ if (is_class && parent != null){
if (parent == TypeManager.enum_type ||
(parent == TypeManager.value_type && RootContext.StdLib) ||
parent == TypeManager.delegate_type ||
return null;
}
}
-
- if (parent_builder is ModuleBuilder) {
- ModuleBuilder builder = (ModuleBuilder) parent_builder;
+
+ if (!is_class && TypeManager.value_type == null)
+ throw new Exception ();
+
+ TypeAttributes type_attributes = TypeAttr;
+
+ // if (parent_builder is ModuleBuilder) {
+ if (IsTopLevel){
+ ModuleBuilder builder = CodeGen.ModuleBuilder;
+
//
// Structs with no fields need to have a ".size 1"
// appended
//
- if (!is_class && Fields == null)
+ if (!is_class && !have_nonstatic_fields)
TypeBuilder = builder.DefineType (Name,
- TypeAttr,
+ type_attributes,
parent,
PackingSize.Unspecified, 1);
else
// classes or structs with fields
//
TypeBuilder = builder.DefineType (Name,
- TypeAttr,
+ type_attributes,
parent,
ifaces);
} else {
- TypeBuilder builder = (System.Reflection.Emit.TypeBuilder) parent_builder;
+ TypeBuilder builder = Parent.TypeBuilder;
//
// Structs with no fields need to have a ".size 1"
// appended
//
- if (!is_class && Fields == null)
+ if (!is_class && !have_nonstatic_fields)
TypeBuilder = builder.DefineNestedType (Basename,
- TypeAttr,
+ type_attributes,
parent,
PackingSize.Unspecified);
- else
- //
- // classes or structs with fields
- //
+ else {
+ //
+ // classes or structs with fields
+ //
TypeBuilder = builder.DefineNestedType (Basename,
- TypeAttr,
+ type_attributes,
parent,
ifaces);
+ }
+ }
+
+ // add interfaces that were not added at type creation (weird API issue)
+ if (!is_class && !have_nonstatic_fields && (ifaces != null)) {
+ foreach (Type i in ifaces)
+ TypeBuilder.AddInterfaceImplementation (i);
}
+
+ //
+ // Finish the setup for the EmitContext
+ //
+ ec.ContainerType = TypeBuilder;
- RootContext.TypeManager.AddUserType (Name, TypeBuilder, this);
- RootContext.RegisterOrder (this);
+ TypeManager.AddUserType (Name, TypeBuilder, this, ifaces);
+
+ if ((parent != null) &&
+ (parent == TypeManager.attribute_type ||
+ parent.IsSubclassOf (TypeManager.attribute_type))) {
+ RootContext.RegisterAttribute (this);
+ TypeManager.RegisterAttrType (TypeBuilder, this);
+ } else
+ RootContext.RegisterOrder (this);
+
+ if (Interfaces != null) {
+ foreach (Interface iface in Interfaces)
+ iface.DefineType ();
+ }
if (Types != null) {
foreach (TypeContainer tc in Types)
- tc.DefineType (TypeBuilder);
+ tc.DefineType ();
}
if (Delegates != null) {
foreach (Delegate d in Delegates)
- d.DefineDelegate (TypeBuilder);
+ d.DefineType ();
}
if (Enums != null) {
foreach (Enum en in Enums)
- en.DefineEnum (TypeBuilder);
+ en.DefineType ();
}
-
+
InTransit = false;
return TypeBuilder;
}
if (defined_names == null)
continue;
-
+
idx = Array.BinarySearch (defined_names, mc.Name, mif_compare);
-
if (idx < 0){
if (RootContext.WarningLevel >= 4){
if ((mc.ModFlags & Modifiers.NEW) != 0)
- Report109 (mc.Location, mc);
+ Warning_KewywordNewNotRequired (mc.Location, mc);
}
continue;
}
- if (defined_names [idx] is PropertyInfo &&
- ((mc.ModFlags & Modifiers.OVERRIDE) != 0)){
+ MemberInfo match = defined_names [idx];
+
+ if (match is PropertyInfo && ((mc.ModFlags & Modifiers.OVERRIDE) != 0))
continue;
- }
-
-#if WANT_TO_VERIFY_SIGNATURES_HERE
- if (defined_names [idx] is MethodBase && mc is MethodCore){
- MethodBase mb = (MethodBase) defined_names [idx];
- MethodCore met = (MethodCore) mc;
-
- if ((mb.IsVirtual || mb.IsAbstract) &&
- (mc.ModFlags & Modifiers.OVERRIDE) != 0)
- continue;
- //
- // FIXME: Compare the signatures here. If they differ,
- // then: `continue;'
- }
-#endif
- Report108 (mc.Location, defined_names [idx]);
+ //
+ // If we are both methods, let the method resolution emit warnings
+ //
+ if (match is MethodBase && mc is MethodCore)
+ continue;
+
+ if ((mc.ModFlags & Modifiers.NEW) == 0)
+ Warning_KeywordNewRequired (mc.Location, defined_names [idx]);
}
foreach (object o in remove_list)
remove_list.Clear ();
}
-
+
+ //
+ // Defines the indexers, and also verifies that the IndexerNameAttribute in the
+ // class is consisten. Either it is `Item' or it is the name defined by all the
+ // indexers with the `IndexerName' attribute.
+ //
+ // Turns out that the IndexerNameAttribute is applied to each indexer,
+ // but it is never emitted, instead a DefaultName attribute is attached
+ // to the class.
+ //
+ void DefineIndexers ()
+ {
+ string class_indexer_name = null;
+
+ foreach (Indexer i in Indexers){
+ string name;
+
+ i.Define (this);
+
+ name = i.IndexerName;
+
+ if (i.InterfaceType != null)
+ continue;
+
+ if (class_indexer_name == null){
+ class_indexer_name = name;
+ continue;
+ }
+
+ if (name == class_indexer_name)
+ continue;
+
+ Report.Error (
+ 668, "Two indexers have different names, " +
+ " you should use the same name for all your indexers");
+ }
+ if (class_indexer_name == null)
+ class_indexer_name = "Item";
+ IndexerName = class_indexer_name;
+ }
+
+ static void Report1530 (Location loc)
+ {
+ Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
+ }
+
/// <summary>
/// Populates our TypeBuilder with fields and methods
/// </summary>
- public override bool Define (TypeContainer parent)
+ public override bool DefineMembers (TypeContainer parent)
{
MemberInfo [] defined_names = null;
+ if (interface_order != null){
+ foreach (Interface iface in interface_order)
+ if ((iface.ModFlags & Modifiers.NEW) == 0)
+ iface.DefineMembers (this);
+ else
+ Report1530 (iface.Location);
+ }
+
if (RootContext.WarningLevel > 1){
Type ptype;
//
ptype = TypeBuilder.BaseType;
if (ptype != null){
- defined_names = FindMembers (
+ defined_names = (MemberInfo []) FindMembers (
ptype, MemberTypes.All & ~MemberTypes.Constructor,
BindingFlags.Public | BindingFlags.Instance |
BindingFlags.Static, null, null);
if (this is Class){
if (instance_constructors == null){
- if (default_constructor == null)
+ if (default_constructor == null)
DefineDefaultConstructor (false);
}
ReportStructInitializedInstanceError ();
}
- RegisterRequiredImplementations ();
-
+ Pending = PendingImplementation.GetPendingImplementations (this);
+
//
// Constructors are not in the defined_names array
//
default_static_constructor.Define (this);
if (methods != null)
- DefineMembers (methods, null);
+ DefineMembers (methods, defined_names);
if (properties != null)
DefineMembers (properties, defined_names);
DefineMembers (events, defined_names);
if (indexers != null) {
- foreach (Indexer i in Indexers)
- i.Define (this);
- }
+ DefineIndexers ();
+ } else
+ IndexerName = "Item";
if (operators != null)
DefineMembers (operators, null);
return true;
}
- /// <summary>
- /// Looks up the alias for the name
- /// </summary>
- public string LookupAlias (string name)
+ public override bool Define (TypeContainer parent)
{
- if (Namespace != null)
- return Namespace.LookupAlias (name);
- else
- return null;
+ if (interface_order != null){
+ foreach (Interface iface in interface_order)
+ if ((iface.ModFlags & Modifiers.NEW) == 0)
+ iface.Define (this);
+ }
+
+ return true;
}
-
+
/// <summary>
/// This function is based by a delegate to the FindMembers routine
/// </summary>
/// </summary>
static MemberFilter accepting_filter;
- static bool IsVirtualFilter (MemberInfo m, object filterCriteria)
- {
- if (!(m is MethodInfo))
- return false;
-
- return ((MethodInfo) m).IsVirtual;
- }
-
- /// <summary>
- /// This filter is used by FindMembers, and it is used to
- /// extract only virtual/abstract fields
- /// </summary>
- static MemberFilter virtual_method_filter;
/// <summary>
/// A member comparission method based on name only
static TypeContainer ()
{
accepting_filter = new MemberFilter (AlwaysAccept);
- virtual_method_filter = new MemberFilter (IsVirtualFilter);
mif_compare = new MemberInfoCompare ();
}
// FIXME: return an empty static array instead of null, that cleans up
// some code and is consistent with some coding conventions I just found
// out existed ;-)
- public MemberInfo [] FindMembers (MemberTypes mt, BindingFlags bf,
- MemberFilter filter, object criteria)
+ //
+ //
+ // Notice that in various cases we check if our field is non-null,
+ // something that would normally mean that there was a bug elsewhere.
+ //
+ // The problem happens while we are defining p-invoke methods, as those
+ // will trigger a FindMembers, but this happens before things are defined
+ //
+ // Since the whole process is a no-op, it is fine to check for null here.
+ //
+ internal override MemberList FindMembers (MemberTypes mt, BindingFlags bf,
+ MemberFilter filter, object criteria)
{
ArrayList members = new ArrayList ();
+ bool priv = (bf & BindingFlags.NonPublic) != 0;
if (filter == null)
filter = accepting_filter;
-
+
if ((mt & MemberTypes.Field) != 0) {
if (fields != null) {
foreach (Field f in fields) {
+ if ((f.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
FieldBuilder fb = f.FieldBuilder;
- if (filter (fb, criteria) == true)
+ if (fb != null && filter (fb, criteria) == true)
members.Add (fb);
}
}
if (constants != null) {
foreach (Const con in constants) {
+ if ((con.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
FieldBuilder fb = con.FieldBuilder;
- if (filter (fb, criteria) == true)
+ if (fb != null && filter (fb, criteria) == true)
members.Add (fb);
}
}
if ((mt & MemberTypes.Method) != 0) {
if (methods != null) {
foreach (Method m in methods) {
+ if ((m.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
MethodBuilder mb = m.MethodBuilder;
- // If we are in transit, ignore
- // This case arises when we are still defining a PInvoke method
- // and we hit FindMembers because of the need to resolve named
- // arguments inside of Attribute.DefinePInvokeMethod
- if (mb == null)
- continue;
-
- if (filter (mb, criteria) == true)
+ if (mb != null && filter (mb, criteria) == true)
members.Add (mb);
}
}
if (operators != null){
foreach (Operator o in operators) {
+ if ((o.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
MethodBuilder ob = o.OperatorMethodBuilder;
-
- if (filter (ob, criteria) == true)
+ if (ob != null && filter (ob, criteria) == true)
members.Add (ob);
}
}
if (properties != null){
foreach (Property p in properties){
+ if ((p.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
MethodBuilder b;
b = p.GetBuilder;
if ((mt & MemberTypes.Event) != 0) {
if (events != null)
foreach (Event e in events) {
- if (filter (e.EventBuilder, criteria) == true)
+ if ((e.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
+ MemberInfo eb = e.EventBuilder;
+ if (eb != null && filter (eb, criteria) == true)
members.Add (e.EventBuilder);
}
}
if ((mt & MemberTypes.Property) != 0){
if (properties != null)
foreach (Property p in properties) {
- if (filter (p.PropertyBuilder, criteria) == true) {
+ if ((p.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
+ MemberInfo pb = p.PropertyBuilder;
+ if (pb != null && filter (pb, criteria) == true) {
members.Add (p.PropertyBuilder);
}
}
if (indexers != null)
foreach (Indexer ix in indexers) {
- if (filter (ix.PropertyBuilder, criteria) == true) {
+ if ((ix.ModFlags & Modifiers.PRIVATE) != 0)
+ if (!priv)
+ continue;
+
+ MemberInfo ib = ix.PropertyBuilder;
+ if (ib != null && filter (ib, criteria) == true) {
members.Add (ix.PropertyBuilder);
}
}
}
if ((mt & MemberTypes.NestedType) != 0) {
+ if (types != null){
+ foreach (TypeContainer t in types) {
+ TypeBuilder tb = t.TypeBuilder;
+
+ if (tb != null && (filter (tb, criteria) == true))
+ members.Add (tb);
+ }
+ }
- if (Types != null)
- foreach (TypeContainer t in Types)
- if (filter (t.TypeBuilder, criteria) == true)
- members.Add (t.TypeBuilder);
+ if (enums != null){
+ foreach (Enum en in enums){
+ TypeBuilder tb = en.TypeBuilder;
- if (Enums != null)
- foreach (Enum en in Enums)
- if (filter (en.TypeBuilder, criteria) == true)
- members.Add (en.TypeBuilder);
+ if (tb != null && (filter (tb, criteria) == true))
+ members.Add (tb);
+ }
+ }
+ if (delegates != null){
+ foreach (Delegate d in delegates){
+ TypeBuilder tb = d.TypeBuilder;
+
+ if (tb != null && (filter (tb, criteria) == true))
+ members.Add (tb);
+ }
+ }
}
if ((mt & MemberTypes.Constructor) != 0){
foreach (Constructor c in instance_constructors){
ConstructorBuilder cb = c.ConstructorBuilder;
- if (filter (cb, criteria) == true)
- members.Add (cb);
+ if (cb != null)
+ if (filter (cb, criteria) == true)
+ members.Add (cb);
}
}
ConstructorBuilder cb =
default_static_constructor.ConstructorBuilder;
+ if (cb != null)
if (filter (cb, criteria) == true)
members.Add (cb);
}
//
// Lookup members in parent if requested.
//
- if ((bf & BindingFlags.DeclaredOnly) == 0){
- MemberInfo [] mi;
-
- mi = FindMembers (TypeBuilder.BaseType, mt, bf, filter, criteria);
- if (mi != null)
- members.AddRange (mi);
- }
-
- int count = members.Count;
- if (count > 0){
- MemberInfo [] mi = new MemberInfo [count];
- members.CopyTo (mi);
- return mi;
+ if (((bf & BindingFlags.DeclaredOnly) == 0) && (TypeBuilder.BaseType != null)) {
+ MemberList list = FindMembers (TypeBuilder.BaseType, mt, bf, filter, criteria);
+ members.AddRange (list);
}
- return null;
+ return new MemberList (members);
}
- public MemberInfo GetFieldFromEvent (EventExpr event_expr)
- {
- EventInfo ei = event_expr.EventInfo;
-
- foreach (Event e in events) {
-
- if (e.FieldBuilder == null)
- continue;
-
- if (Type.FilterName (e.FieldBuilder, ei.Name))
- return e.FieldBuilder;
- }
-
- return null;
- }
+
- public static MemberInfo [] FindMembers (Type t, MemberTypes mt, BindingFlags bf,
- MemberFilter filter, object criteria)
+ public static MemberList FindMembers (Type t, MemberTypes mt, BindingFlags bf,
+ MemberFilter filter, object criteria)
{
TypeContainer tc = TypeManager.LookupTypeContainer (t);
if (tc != null)
return tc.FindMembers (mt, bf, filter, criteria);
else
- return t.FindMembers (mt, bf, filter, criteria);
+ return new MemberList (t.FindMembers (mt, bf, filter, criteria));
}
//
return null;
}
- /// <summary>
- /// Whether the specified method is an interface method implementation
- /// </summary>
- ///
- /// <remarks>
- /// If a method in Type `t' (or null to look in all interfaces
- /// and the base abstract class) with name `Name', return type `ret_type' and
- /// arguments `args' implements an interface, this method will
- /// return the MethodInfo that this method implements.
- ///
- /// This will remove the method from the list of "pending" methods
- /// that are required to be implemented for this class as a side effect.
- ///
- /// </remarks>
- public MethodInfo IsInterfaceMethod (Type t, string Name, Type ret_type, Type [] args,
- bool clear)
- {
- int arg_len = args.Length;
-
- if (pending_implementations == null)
- return null;
-
- foreach (TypeAndMethods tm in pending_implementations){
- if (!(t == null || tm.type == t))
- continue;
-
- int i = 0;
- foreach (MethodInfo m in tm.methods){
- if (m == null){
- i++;
- continue;
- }
-
- if (Name != m.Name){
- i++;
- continue;
- }
-
- if (ret_type != m.ReturnType){
- if (!((ret_type == null && m.ReturnType == TypeManager.void_type) ||
- (m.ReturnType == null && ret_type == TypeManager.void_type)))
- {
- i++;
- continue;
- }
- }
-
- //
- // Check if we have the same parameters
- //
- if (tm.args [i].Length != arg_len){
- i++;
- continue;
- }
-
- int j, top = args.Length;
- bool fail = false;
-
- for (j = 0; j < top; j++){
- if (tm.args [i][j] != args[j]){
- fail = true;
- break;
- }
- }
- if (fail){
- i++;
- continue;
- }
-
- if (clear)
- tm.methods [i] = null;
- tm.found [i] = true;
- return m;
- }
-
- // If a specific type was requested, we can stop now.
- if (tm.type == t)
- return null;
- }
- return null;
- }
-
- /// <summary>
- /// C# allows this kind of scenarios:
- /// interface I { void M (); }
- /// class X { public void M (); }
- /// class Y : X, I { }
- ///
- /// For that case, we create an explicit implementation function
- /// I.M in Y.
- /// </summary>
- void DefineProxy (Type iface, MethodInfo parent_method, MethodInfo iface_method,
- Type [] args)
- {
- MethodBuilder proxy;
-
- string proxy_name = iface.Name + "." + iface_method.Name;
-
- proxy = TypeBuilder.DefineMethod (
- proxy_name,
- MethodAttributes.HideBySig |
- MethodAttributes.NewSlot |
- MethodAttributes.Virtual,
- CallingConventions.Standard | CallingConventions.HasThis,
- parent_method.ReturnType, args);
-
- int top = args.Length;
- ILGenerator ig = proxy.GetILGenerator ();
-
- ig.Emit (OpCodes.Ldarg_0);
- for (int i = 0; i < top; i++){
- switch (i){
- case 0:
- ig.Emit (OpCodes.Ldarg_1); break;
- case 1:
- ig.Emit (OpCodes.Ldarg_2); break;
- case 2:
- ig.Emit (OpCodes.Ldarg_3); break;
- default:
- ig.Emit (OpCodes.Ldarg, i - 1); break;
- }
- }
- ig.Emit (OpCodes.Call, parent_method);
- ig.Emit (OpCodes.Ret);
-
- TypeBuilder.DefineMethodOverride (proxy, iface_method);
- }
-
- /// <summary>
- /// This function tells whether one of our parent classes implements
- /// the given method (which turns out, it is valid to have an interface
- /// implementation in a parent
- /// </summary>
- bool ParentImplements (Type iface_type, MethodInfo mi)
- {
- MethodSignature ms;
-
- Type [] args = TypeManager.GetArgumentTypes (mi);
- ms = new MethodSignature (mi.Name, mi.ReturnType, args);
- MemberInfo [] list = FindMembers (
- TypeBuilder.BaseType, MemberTypes.Method | MemberTypes.Property,
- BindingFlags.Public | BindingFlags.Instance,
- MethodSignature.method_signature_filter, ms);
-
- if (list == null || list.Length == 0)
- return false;
-
- DefineProxy (iface_type, (MethodInfo) list [0], mi, args);
- return true;
- }
-
- /// <summary>
- /// Verifies that any pending abstract methods or interface methods
- /// were implemented.
- /// </summary>
- bool VerifyPendingMethods ()
- {
- int top = pending_implementations.Length;
- bool errors = false;
- int i;
-
- for (i = 0; i < top; i++){
- Type type = pending_implementations [i].type;
- int j = 0;
-
- foreach (MethodInfo mi in pending_implementations [i].methods){
- if (mi == null)
- continue;
-
- if (type.IsInterface){
- if (ParentImplements (type, mi))
- continue;
-
- string extra = "";
-
- if (pending_implementations [i].found [j])
- extra = ". (method might be private or static)";
- Report.Error (
- 536, Location,
- "`" + Name + "' does not implement " +
- "interface member `" +
- type.FullName + "." + mi.Name + "'" + extra);
- } else {
- Report.Error (
- 534, Location,
- "`" + Name + "' does not implement " +
- "inherited abstract member `" +
- type.FullName + "." + mi.Name + "'");
- }
- errors = true;
- j++;
- }
- }
- return errors;
- }
-
/// <summary>
/// Emits the values for the constants
/// </summary>
con.EmitConstant (this);
return;
}
-
+
/// <summary>
/// Emits the code, this step is performed after all
/// the types, enumerations, constructors
foreach (Property p in properties)
p.Emit (this);
- if (indexers != null) {
+ if (indexers != null){
foreach (Indexer ix in indexers)
ix.Emit (this);
-
- CustomAttributeBuilder cb = Interface.EmitDefaultMemberAttr (this, ModFlags, Location);
-
+
+ CustomAttributeBuilder cb = Interface.EmitDefaultMemberAttr (
+ this, IndexerName, ModFlags, Location);
TypeBuilder.SetCustomAttribute (cb);
}
e.Emit (this);
}
- if (pending_implementations != null)
- if (!VerifyPendingMethods ())
+ if (Pending != null)
+ if (Pending.VerifyPendingMethods ())
return;
-
- EmitContext ec = new EmitContext (
- this, Mono.CSharp.Location.Null, null, null,
- ModFlags);
-
+
Attribute.ApplyAttributes (ec, TypeBuilder, this, OptAttributes, Location);
//
// Check for internal or private fields that were never assigned
//
- if (RootContext.WarningLevel >= 3){
- foreach (Field f in fields){
+ if (fields != null && RootContext.WarningLevel >= 3) {
+ foreach (Field f in fields) {
if ((f.ModFlags & Modifiers.PUBLIC) != 0)
continue;
//
if (RootContext.WarningLevel < 4)
continue;
-
+
if ((f.status & Field.Status.ASSIGNED) != 0)
continue;
//
// Report.Warning (-20, "Exception while creating class: " + TypeBuilder.Name);
// Console.WriteLine (e.Message);
+ } catch {
+ Console.WriteLine ("In type: " + Name);
+ throw;
}
if (Enums != null)
foreach (Enum en in Enums)
en.CloseType ();
+
+ if (interface_order != null){
+ foreach (Interface iface in interface_order)
+ iface.CloseType ();
+ }
if (Types != null){
foreach (TypeContainer tc in Types)
return "`" + Name + "." + n + "'";
}
- public void Report108 (Location l, MemberInfo mi)
+ public void Warning_KeywordNewRequired (Location l, MemberInfo mi)
{
Report.Warning (
108, l, "The keyword new is required on " +
mi.ReflectedType.Name + "." + mi.Name + "'");
}
- public void Report109 (Location l, MemberCore mc)
+ public void Warning_KewywordNewNotRequired (Location l, MemberCore mc)
{
Report.Warning (
109, l, "The member " + MakeName (mc.Name) + " does not hide an " +
public bool MethodModifiersValid (int flags, string n, Location loc)
{
const int vao = (Modifiers.VIRTUAL | Modifiers.ABSTRACT | Modifiers.OVERRIDE);
+ const int va = (Modifiers.VIRTUAL | Modifiers.ABSTRACT);
const int nv = (Modifiers.NEW | Modifiers.VIRTUAL);
bool ok = true;
string name = MakeName (n);
}
}
+ if (this is Struct){
+ if ((flags & va) != 0){
+ Modifiers.Error_InvalidModifier (loc, "virtual or abstract");
+ ok = false;
+ }
+ }
+
if ((flags & Modifiers.OVERRIDE) != 0 && (flags & nv) != 0){
Report.Error (
113, loc, name +
return ok;
}
+ // Access level of a type.
+ enum AccessLevel {
+ Public = 0,
+ ProtectedInternal = 1,
+ Internal = 2,
+ Protected = 3,
+ Private = 4
+ }
+
+ // Check whether `flags' denotes a more restricted access than `level'
+ // and return the new level.
+ static AccessLevel CheckAccessLevel (AccessLevel level, int flags)
+ {
+ AccessLevel old_level = level;
+
+ if ((flags & Modifiers.INTERNAL) != 0) {
+ if ((flags & Modifiers.PROTECTED) != 0) {
+ if ((int) level < (int) AccessLevel.ProtectedInternal)
+ level = AccessLevel.ProtectedInternal;
+ } else {
+ if ((int) level < (int) AccessLevel.Internal)
+ level = AccessLevel.Internal;
+ }
+ } else if ((flags & Modifiers.PROTECTED) != 0) {
+ if ((int) level < (int) AccessLevel.Protected)
+ level = AccessLevel.Protected;
+ } else if ((flags & Modifiers.PRIVATE) != 0)
+ level = AccessLevel.Private;
+
+ return level;
+ }
+
+ // Return the access level for a new member which is defined in the current
+ // TypeContainer with access modifiers `flags'.
+ AccessLevel GetAccessLevel (int flags)
+ {
+ if ((flags & Modifiers.PRIVATE) != 0)
+ return AccessLevel.Private;
+
+ AccessLevel level;
+ if (!IsTopLevel && (Parent != null))
+ level = Parent.GetAccessLevel (flags);
+ else
+ level = AccessLevel.Public;
+
+ return CheckAccessLevel (CheckAccessLevel (level, flags), ModFlags);
+ }
+
+ // Return the access level for type `t', but don't give more access than `flags'.
+ static AccessLevel GetAccessLevel (Type t, int flags)
+ {
+ if (((flags & Modifiers.PRIVATE) != 0) || t.IsNestedPrivate)
+ return AccessLevel.Private;
+
+ AccessLevel level;
+ if (TypeManager.IsBuiltinType (t))
+ return AccessLevel.Public;
+ else if ((t.DeclaringType != null) && (t != t.DeclaringType))
+ level = GetAccessLevel (t.DeclaringType, flags);
+ else {
+ level = CheckAccessLevel (AccessLevel.Public, flags);
+ }
+
+ if (t.IsNestedPublic)
+ return level;
+
+ if (t.IsNestedAssembly || t.IsNotPublic) {
+ if ((int) level < (int) AccessLevel.Internal)
+ level = AccessLevel.Internal;
+ }
+
+ if (t.IsNestedFamily) {
+ if ((int) level < (int) AccessLevel.Protected)
+ level = AccessLevel.Protected;
+ }
+
+ if (t.IsNestedFamORAssem) {
+ if ((int) level < (int) AccessLevel.ProtectedInternal)
+ level = AccessLevel.ProtectedInternal;
+ }
+
+ return level;
+ }
+
//
- // Returns true if `type' is as accessible as the flags `flags'
- // given for this member
+ // Returns true if `parent' is as accessible as the flags `flags'
+ // given for this member.
//
- static public bool AsAccessible (Type type, int flags)
+ public bool AsAccessible (Type parent, int flags)
{
- return true;
+ while (parent.IsArray || parent.IsPointer || parent.IsByRef)
+ parent = parent.GetElementType ();
+
+ AccessLevel level = GetAccessLevel (flags);
+ AccessLevel level2 = GetAccessLevel (parent, flags);
+
+ return (int) level >= (int) level2;
}
Hashtable builder_and_args;
builder_and_args = new Hashtable ();
return true;
}
+
+ /// <summary>
+ /// Performs checks for an explicit interface implementation. First it
+ /// checks whether the `interface_type' is a base inteface implementation.
+ /// Then it checks whether `name' exists in the interface type.
+ /// </summary>
+ public bool VerifyImplements (Type interface_type, string full, string name, Location loc)
+ {
+ bool found = false;
+
+ if (ifaces != null){
+ foreach (Type t in ifaces){
+ if (t == interface_type){
+ found = true;
+ break;
+ }
+ }
+ }
+
+ if (!found){
+ Report.Error (540, "`" + full + "': containing class does not implement interface `" + interface_type.FullName + "'");
+ return false;
+ }
+
+ return true;
+ }
+
+ public static void Error_ExplicitInterfaceNotMemberInterface (Location loc, string name)
+ {
+ Report.Error (539, loc, "Explicit implementation: `" + name + "' is not a member of the interface");
+ }
+
+ public override MemberCache MemberCache {
+ get {
+ return null;
+ }
+ }
}
public class Class : TypeContainer {
}
}
- public abstract class MethodCore : MemberCore {
+ public abstract class MethodCore : MemberBase {
public readonly Parameters Parameters;
Block block;
//
// Parameters, cached for semantic analysis.
//
- InternalParameters parameter_info;
-
- public MethodCore (string name, Parameters parameters, Location l)
- : base (name, l)
+ protected InternalParameters parameter_info;
+ protected Type [] parameter_types;
+
+ public MethodCore (Expression type, int mod, int allowed_mod, string name,
+ Attributes attrs, Parameters parameters, Location loc)
+ : base (type, mod, allowed_mod, name, attrs, loc)
{
- Name = name;
Parameters = parameters;
}
//
// Returns the System.Type array for the parameters of this method
//
- Type [] parameter_types;
- public Type [] ParameterTypes (TypeContainer parent)
- {
- if (Parameters == null)
- return TypeManager.NoTypes;
-
- if (parameter_types == null)
- parameter_types = Parameters.GetParameterInfo (parent);
-
- return parameter_types;
+ public Type [] ParameterTypes {
+ get {
+ return parameter_types;
+ }
}
public InternalParameters ParameterInfo
get {
return parameter_info;
}
-
- set {
- parameter_info = value;
- }
}
public Block Block {
}
}
- public CallingConventions GetCallingConvention (bool is_class)
+ protected virtual bool DoDefineParameters (TypeContainer parent)
{
- CallingConventions cc = 0;
-
+ // Check if arguments were correct
+ parameter_types = Parameters.GetParameterInfo (parent);
+ if ((parameter_types == null) || !CheckParameters (parent, parameter_types))
+ return false;
+
+ parameter_info = new InternalParameters (parent, Parameters);
+
+ return true;
+ }
+
+ public CallingConventions GetCallingConvention (bool is_class)
+ {
+ CallingConventions cc = 0;
+
cc = Parameters.GetCallingConvention ();
if (is_class)
// the argument names.
//
Parameter [] p = Parameters.FixedParameters;
- if (p == null)
- return;
-
+ int i = 0;
+
MethodBuilder mb = null;
ConstructorBuilder cb = null;
mb = (MethodBuilder) builder;
else
cb = (ConstructorBuilder) builder;
-
- int i;
-
- for (i = 0; i < p.Length; i++) {
- ParameterBuilder pb;
- if (mb == null)
- pb = cb.DefineParameter (
- i + 1, p [i].Attributes, p [i].Name);
- else
- pb = mb.DefineParameter (
- i + 1, p [i].Attributes, p [i].Name);
-
- Attributes attr = p [i].OptAttributes;
- if (attr != null)
- Attribute.ApplyAttributes (ec, pb, pb, attr, Location);
+ if (p != null){
+ for (i = 0; i < p.Length; i++) {
+ ParameterBuilder pb;
+
+ if (mb == null)
+ pb = cb.DefineParameter (
+ i + 1, p [i].Attributes, p [i].Name);
+ else
+ pb = mb.DefineParameter (
+ i + 1, p [i].Attributes, p [i].Name);
+
+ Attributes attr = p [i].OptAttributes;
+ if (attr != null)
+ Attribute.ApplyAttributes (ec, pb, pb, attr, Location);
+ }
}
-
- if (i != parameters.Length) {
+
+ if (Parameters.ArrayParameter != null){
ParameterBuilder pb;
-
Parameter array_param = Parameters.ArrayParameter;
+
if (mb == null)
pb = cb.DefineParameter (
i + 1, array_param.Attributes,
}
public class Method : MethodCore {
- public readonly string ReturnType;
public MethodBuilder MethodBuilder;
- public readonly Attributes OptAttributes;
-
- MethodAttributes flags;
+ public MethodData MethodData;
/// <summary>
/// Modifiers allowed in a class declaration
//
// return_type can be "null" for VOID values.
//
- public Method (string return_type, int mod, string name, Parameters parameters,
+ public Method (Expression return_type, int mod, string name, Parameters parameters,
Attributes attrs, Location l)
- : base (name, parameters, l)
- {
- ReturnType = return_type;
- ModFlags = Modifiers.Check (AllowedModifiers, mod, Modifiers.PRIVATE, l);
- OptAttributes = attrs;
- }
+ : base (return_type, mod, AllowedModifiers, name, attrs, parameters, l)
+ { }
//
// Returns the `System.Type' for the ReturnType of this
// function. Provides a nice cache. (used between semantic analysis
// and actual code generation
//
- Type type_return_type;
-
public Type GetReturnType (TypeContainer parent)
{
- if (type_return_type == null)
- type_return_type = RootContext.LookupType (
- parent, ReturnType, false, Location);
-
- return type_return_type;
+ return MemberType;
}
- void DuplicatEntryPoint (MethodInfo b)
- {
- Report.Error (
- 17, Location,
- "Program `" + RootContext.CodeGen.FileName +
- "' has more than one entry point defined: `" +
- b.DeclaringType.Name + "." + b.Name + "'");
- }
-
+ // Whether this is an operator method.
+ public bool IsOperator;
+
+ void DuplicateEntryPoint (MethodInfo b, Location location)
+ {
+ Report.Error (
+ 17, location,
+ "Program `" + CodeGen.FileName +
+ "' has more than one entry point defined: `" +
+ TypeManager.CSharpSignature(b) + "'");
+ }
+
+ void Report28 (MethodInfo b)
+ {
+ if (RootContext.WarningLevel < 4)
+ return;
+
+ Report.Warning (
+ 28, Location,
+ "`" + TypeManager.CSharpSignature(b) +
+ "' has the wrong signature to be an entry point");
+ }
+
+ public bool IsEntryPoint (MethodBuilder b, InternalParameters pinfo)
+ {
+ if (b.ReturnType != TypeManager.void_type &&
+ b.ReturnType != TypeManager.int32_type)
+ return false;
+
+ if (pinfo.Count == 0)
+ return true;
+
+ if (pinfo.Count > 1)
+ return false;
+
+ Type t = pinfo.ParameterType(0);
+ if (t.IsArray &&
+ (t.GetArrayRank() == 1) &&
+ (t.GetElementType() == TypeManager.string_type) &&
+ (pinfo.ParameterModifier(0) == Parameter.Modifier.NONE))
+ return true;
+ else
+ return false;
+ }
+
//
- // Creates the type
+ // Checks our base implementation if any
//
- public override bool Define (TypeContainer parent)
+ protected override bool CheckBase (TypeContainer parent)
{
- Type ret_type = GetReturnType (parent);
- Type [] parameters = ParameterTypes (parent);
- bool error = false;
- MethodInfo implementing;
- Type iface_type = null;
- string iface = "", short_name;
- bool explicit_impl = false;
-
- // Check if the return type and arguments were correct
- if (ret_type == null || parameters == null)
- return false;
-
- if (!parent.MethodModifiersValid (ModFlags, Name, Location))
+ // Check whether arguments were correct.
+ if (!DoDefineParameters (parent))
return false;
- flags = Modifiers.MethodAttr (ModFlags);
+ MethodSignature ms = new MethodSignature (Name, null, ParameterTypes);
+ if (!IsOperator) {
+ MemberList mi_this;
- //
- // verify accessibility
- //
- if (!TypeContainer.AsAccessible (ret_type, ModFlags))
- return false;
+ mi_this = TypeContainer.FindMembers (
+ parent.TypeBuilder, MemberTypes.Method,
+ BindingFlags.NonPublic | BindingFlags.Public |
+ BindingFlags.Static | BindingFlags.Instance |
+ BindingFlags.DeclaredOnly,
+ MethodSignature.method_signature_filter, ms);
- if (ret_type.IsPointer && !UnsafeOK (parent))
- return false;
-
- foreach (Type partype in parameters){
- if (!TypeContainer.AsAccessible (partype, ModFlags))
- error = true;
- if (partype.IsPointer && !UnsafeOK (parent))
- error = true;
+ if (mi_this.Count > 0) {
+ Report.Error (111, Location, "Class `" + parent.Name + "' " +
+ "already defines a member called `" + Name + "' " +
+ "with the same parameter types");
+ return false;
+ }
}
- if (error)
- return false;
-
//
// Verify if the parent has a type with the same name, and then
// check whether we have to create a new slot for it or not.
// ptype is only null for System.Object while compiling corlib.
if (ptype != null){
- MethodSignature ms = new MethodSignature (Name, ret_type, parameters);
- MemberInfo [] mi, mi_static, mi_instance;
+ MemberList mi, mi_static, mi_instance;
mi_static = TypeContainer.FindMembers (
ptype, MemberTypes.Method,
MethodSignature.inheritable_method_signature_filter,
ms);
- if (mi_instance != null && mi_instance.Length > 0){
+ if (mi_instance.Count > 0){
mi = mi_instance;
- } else if (mi_static != null && mi_static.Length > 0)
+ } else if (mi_static.Count > 0)
mi = mi_static;
else
mi = null;
-
- if (mi != null && mi.Length > 0){
- if (!CheckMethodAgainstBase (parent, (MethodInfo) mi [0])){
+
+ if (mi != null && mi.Count > 0){
+ parent_method = (MethodInfo) mi [0];
+ string name = parent_method.DeclaringType.Name + "." +
+ parent_method.Name;
+
+ if (!CheckMethodAgainstBase (parent, flags, parent_method, name))
return false;
+
+ if ((ModFlags & Modifiers.NEW) == 0) {
+ Type parent_ret = TypeManager.TypeToCoreType (
+ parent_method.ReturnType);
+
+ if (parent_ret != MemberType) {
+ Report.Error (
+ 508, parent.MakeName (Name) + ": cannot " +
+ "change return type when overriding " +
+ "inherited member " + name);
+ return false;
+ }
}
} else {
if ((ModFlags & Modifiers.NEW) != 0)
WarningNotHiding (parent);
-
- if ((ModFlags & Modifiers.OVERRIDE) != 0)
+
+ if ((ModFlags & Modifiers.OVERRIDE) != 0){
Report.Error (115, Location,
parent.MakeName (Name) +
" no suitable methods found to override");
+ }
}
} else if ((ModFlags & Modifiers.NEW) != 0)
WarningNotHiding (parent);
- //
- // If we implement an interface, extract the interface name.
- //
-
- if (Name.IndexOf (".") != -1){
- int pos = Name.LastIndexOf (".");
- iface = Name.Substring (0, pos);
-
- iface_type = RootContext.LookupType (parent, iface, false, Location);
- short_name = Name.Substring (pos + 1);
-
- if (iface_type == null)
- return false;
-
- // Compute the full name that we need to export
- Name = iface_type.FullName + "." + short_name;
- explicit_impl = true;
- } else
- short_name = Name;
-
- //
- // Check if we are an implementation of an interface method or
- // a method
- //
- implementing = parent.IsInterfaceMethod (
- iface_type, short_name, ret_type, parameters, false);
-
- //
- // For implicit implementations, make sure we are public, for
- // explicit implementations, make sure we are private.
- //
- if (implementing != null){
- //
- // Setting null inside this block will trigger a more
- // verbose error reporting for missing interface implementations
- //
- // The "candidate" function has been flagged already
- // but it wont get cleared
- //
- if (iface_type == null){
- if ((ModFlags & Modifiers.PUBLIC) == 0)
- implementing = null;
-
- if ((ModFlags & Modifiers.STATIC) != 0)
- implementing = null;
- } else {
- if ((ModFlags & (Modifiers.PUBLIC | Modifiers.ABSTRACT)) != 0){
- Report.Error (
- 106, Location, "`public' or `abstract' modifiers "+
- "are not allowed in explicit interface declarations"
- );
- implementing = null;
- }
- }
- }
-
- //
- // If implementing is still valid, set flags
- //
- if (implementing != null){
- flags |=
- MethodAttributes.Virtual |
- MethodAttributes.HideBySig;
+ return true;
+ }
- // If not abstract, then we can set Final.
- if (((flags & MethodAttributes.Abstract) == 0) &&
- implementing.DeclaringType.IsInterface)
- flags |= MethodAttributes.Final;
+ //
+ // Creates the type
+ //
+ public override bool Define (TypeContainer parent)
+ {
+ if (!DoDefine (parent))
+ return false;
- //
- // clear the flag
- //
- parent.IsInterfaceMethod (
- iface_type, short_name, ret_type, parameters, true);
- }
-
- Attribute dllimport_attr = null;
- if (OptAttributes != null && OptAttributes.AttributeSections != null) {
- foreach (AttributeSection asec in OptAttributes.AttributeSections) {
- if (asec.Attributes == null)
- continue;
-
- foreach (Attribute a in asec.Attributes)
- if (a.Name.IndexOf ("DllImport") != -1) {
- flags |= MethodAttributes.PinvokeImpl;
- dllimport_attr = a;
- }
- }
- }
+ if (!CheckBase (parent))
+ return false;
- //
- // Finally, define the method
- //
+ CallingConventions cc = GetCallingConvention (parent is Class);
- if ((flags & MethodAttributes.PinvokeImpl) != 0) {
- EmitContext ec = new EmitContext (
- parent, Location, null, GetReturnType (parent), ModFlags);
-
- MethodBuilder = dllimport_attr.DefinePInvokeMethod (
- ec, parent.TypeBuilder,
- Name, flags, ret_type, parameters);
- } else {
-
- MethodBuilder = parent.TypeBuilder.DefineMethod (
- Name, flags,
- GetCallingConvention (parent is Class),
- ret_type, parameters);
-
- if (implementing != null && explicit_impl)
- parent.TypeBuilder.DefineMethodOverride (
- MethodBuilder, implementing);
- }
+ MethodData = new MethodData (this, null, MemberType, ParameterTypes,
+ ParameterInfo, cc, OptAttributes,
+ ModFlags, flags, true);
- if (MethodBuilder == null)
+ if (!MethodData.Define (parent))
return false;
- //
- // HACK because System.Reflection.Emit is lame
- //
- ParameterInfo = new InternalParameters (parent, Parameters);
-
- if (!TypeManager.RegisterMethod (MethodBuilder, ParameterInfo,
- parameters)) {
- Report.Error (
- 111, Location,
- "Class `" + parent.Name + "' already contains a definition with " +
- " the same return value and parameter types for method `" +
- Name + "'");
- return false;
- }
+ MethodBuilder = MethodData.MethodBuilder;
//
// This is used to track the Entry Point,
//
- // FIXME: Allow pluggable entry point, check arguments, etc.
- //
if (Name == "Main" &&
((ModFlags & Modifiers.STATIC) != 0) &&
(RootContext.MainClass == null ||
RootContext.MainClass == parent.TypeBuilder.FullName)){
- if (RootContext.EntryPoint != null){
- DuplicatEntryPoint (MethodBuilder);
- DuplicatEntryPoint (RootContext.EntryPoint);
- } else
- RootContext.EntryPoint = MethodBuilder;
-
- //
- // FIXME: Verify that the method signature
- // is valid for an entry point, and report
- // error 28 if not.
- //
+ if (IsEntryPoint (MethodBuilder, ParameterInfo)) {
+ if (RootContext.EntryPoint == null) {
+ RootContext.EntryPoint = MethodBuilder;
+ RootContext.EntryPointLocation = Location;
+ } else {
+ DuplicateEntryPoint (RootContext.EntryPoint, RootContext.EntryPointLocation);
+ DuplicateEntryPoint (MethodBuilder, Location);
+ }
+ } else
+ Report28(MethodBuilder);
}
return true;
//
public void Emit (TypeContainer parent)
{
- ILGenerator ig;
- EmitContext ec;
-
- if ((flags & MethodAttributes.PinvokeImpl) == 0)
- ig = MethodBuilder.GetILGenerator ();
- else
- ig = null;
-
- ec = new EmitContext (parent, Location, ig, GetReturnType (parent), ModFlags);
-
- if (OptAttributes != null)
- Attribute.ApplyAttributes (ec, MethodBuilder, this, OptAttributes, Location);
-
-
- LabelParameters (ec, ParameterTypes (parent), MethodBuilder);
-
- //
- // abstract or extern methods have no bodies
- //
- if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
- return;
-
- //
- // Handle destructors specially
- //
- // FIXME: This code generates buggy code
- //
- if (Name == "Finalize" && type_return_type == TypeManager.void_type)
- EmitDestructor (ec);
- else
- ec.EmitTopBlock (Block, Location);
- }
-
- void EmitDestructor (EmitContext ec)
- {
- ILGenerator ig = ec.ig;
-
- Label finish = ig.DefineLabel ();
- bool old_in_try = ec.InTry;
- Expression member_lookup;
-
- ig.BeginExceptionBlock ();
- ec.InTry = true;
- ec.ReturnLabel = finish;
- ec.EmitTopBlock (Block, Location);
- ec.InTry = old_in_try;
-
- ig.MarkLabel (finish);
- bool old_in_finally = ec.InFinally;
- ec.InFinally = true;
- ig.BeginFinallyBlock ();
-
- member_lookup = Expression.MemberLookup (
- ec, ec.TypeContainer.TypeBuilder.BaseType, "Finalize",
- MemberTypes.Method, Expression.AllBindingFlags, Location);
-
- if (member_lookup != null){
- MethodGroupExpr parent_destructor = ((MethodGroupExpr) member_lookup);
-
- ig.Emit (OpCodes.Ldarg_0);
- ig.Emit (OpCodes.Call, (MethodInfo) parent_destructor.Methods [0]);
- }
- ec.InFinally = old_in_finally;
-
- ig.EndExceptionBlock ();
- //ig.MarkLabel (ec.ReturnLabel);
- ig.Emit (OpCodes.Ret);
+ MethodData.Emit (parent, Block, this);
}
}
public abstract class ConstructorInitializer {
ArrayList argument_list;
ConstructorInfo parent_constructor;
- Location location;
+ Parameters parameters;
+ Location loc;
- public ConstructorInitializer (ArrayList argument_list, Location location)
+ public ConstructorInitializer (ArrayList argument_list, Parameters parameters,
+ Location loc)
{
this.argument_list = argument_list;
- this.location = location;
+ this.parameters = parameters;
+ this.loc = loc;
}
public ArrayList Arguments {
{
Expression parent_constructor_group;
Type t;
-
- if (argument_list != null){
- for (int i = argument_list.Count; i > 0; ){
- --i;
- Argument a = (Argument) argument_list [i];
- if (!a.Resolve (ec, location))
+ ec.CurrentBlock = new Block (null, true, parameters);
+
+ if (argument_list != null){
+ foreach (Argument a in argument_list){
+ if (!a.Resolve (ec, loc))
return false;
}
}
- if (this is ConstructorBaseInitializer)
- t = ec.TypeContainer.TypeBuilder.BaseType;
- else
- t = ec.TypeContainer.TypeBuilder;
-
+ ec.CurrentBlock = null;
+
+ if (this is ConstructorBaseInitializer) {
+ if (ec.ContainerType.BaseType == null)
+ return true;
+
+ t = ec.ContainerType.BaseType;
+ if (ec.ContainerType.IsValueType) {
+ Report.Error (522, loc,
+ "structs cannot call base class constructors");
+ return false;
+ }
+ } else
+ t = ec.ContainerType;
+
parent_constructor_group = Expression.MemberLookup (
- ec, t, ".ctor",
+ ec, t, t, ".ctor",
MemberTypes.Constructor,
- BindingFlags.Public | BindingFlags.Instance, location);
+ BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
+ loc);
if (parent_constructor_group == null){
- Console.WriteLine ("Could not find a constructor in our parent");
+ Report.Error (1501, loc,
+ "Can not find a constructor for this argument list");
return false;
}
parent_constructor = (ConstructorInfo) Invocation.OverloadResolve (ec,
- (MethodGroupExpr) parent_constructor_group, argument_list, location);
+ (MethodGroupExpr) parent_constructor_group, argument_list, loc);
if (parent_constructor == null){
- Console.WriteLine ("Could not locate a proper overload function");
+ Report.Error (1501, loc,
+ "Can not find a constructor for this argument list");
return false;
}
public void Emit (EmitContext ec)
{
- ec.ig.Emit (OpCodes.Ldarg_0);
+ if (parent_constructor != null)
+ ec.ig.Emit (OpCodes.Ldarg_0);
if (argument_list != null)
Invocation.EmitArguments (ec, null, argument_list);
- ec.ig.Emit (OpCodes.Call, parent_constructor);
+ if (parent_constructor != null)
+ ec.ig.Emit (OpCodes.Call, parent_constructor);
}
}
public class ConstructorBaseInitializer : ConstructorInitializer {
- public ConstructorBaseInitializer (ArrayList argument_list, Location l) : base (argument_list, l)
+ public ConstructorBaseInitializer (ArrayList argument_list, Parameters pars, Location l) :
+ base (argument_list, pars, l)
{
}
}
public class ConstructorThisInitializer : ConstructorInitializer {
- public ConstructorThisInitializer (ArrayList argument_list, Location l) : base (argument_list, l)
+ public ConstructorThisInitializer (ArrayList argument_list, Parameters pars, Location l) :
+ base (argument_list, pars, l)
{
}
}
public class Constructor : MethodCore {
public ConstructorBuilder ConstructorBuilder;
public ConstructorInitializer Initializer;
- public Attributes OptAttributes;
+ new public Attributes OptAttributes;
// <summary>
// Modifiers allowed for a constructor.
// my very own code has static constructors.
//
public Constructor (string name, Parameters args, ConstructorInitializer init, Location l)
- : base (name, args, l)
+ : base (null, 0, AllowedModifiers, name, null, args, l)
{
Initializer = init;
}
MethodAttributes ca = (MethodAttributes.RTSpecialName |
MethodAttributes.SpecialName);
- Type [] parameters = ParameterTypes (parent);
+ // Check if arguments were correct.
+ if (!DoDefineParameters (parent))
+ return false;
if ((ModFlags & Modifiers.STATIC) != 0)
ca |= MethodAttributes.Static;
else {
- if (parent is Struct && parameters.Length == 0){
+ if (parent is Struct && ParameterTypes.Length == 0){
Report.Error (
568, Location,
"Structs can not contain explicit parameterless " +
ca |= MethodAttributes.Public | MethodAttributes.HideBySig;
}
- foreach (Type partype in parameters)
- if (!TypeContainer.AsAccessible (partype, ModFlags))
- return false;
-
ConstructorBuilder = parent.TypeBuilder.DefineConstructor (
- ca, GetCallingConvention (parent is Class), parameters);
+ ca, GetCallingConvention (parent is Class), ParameterTypes);
//
// HACK because System.Reflection.Emit is lame
//
- ParameterInfo = new InternalParameters (parent, Parameters);
-
- if (!TypeManager.RegisterMethod (ConstructorBuilder, ParameterInfo, parameters)) {
+ if (!TypeManager.RegisterMethod (ConstructorBuilder, ParameterInfo, ParameterTypes)) {
Report.Error (
111, Location,
"Class `" +parent.Name+ "' already contains a definition with the " +
ILGenerator ig = ConstructorBuilder.GetILGenerator ();
EmitContext ec = new EmitContext (parent, Location, ig, null, ModFlags, true);
- if (parent is Class && ((ModFlags & Modifiers.STATIC) == 0)){
- if (Initializer == null)
- Initializer = new ConstructorBaseInitializer (null, parent.Location);
-
- if (!Initializer.Resolve (ec)){
- Console.WriteLine ("Could not resolve initializer: " + parent.Name);
- }
+ if ((ModFlags & Modifiers.STATIC) == 0){
+ if (parent is Class && Initializer == null)
+ Initializer = new ConstructorBaseInitializer (
+ null, Parameters.EmptyReadOnlyParameters, parent.Location);
+
+
+ //
+ // Spec mandates that Initializers will not have
+ // `this' access
+ //
+ ec.IsStatic = true;
+ if (Initializer != null && !Initializer.Resolve (ec))
+ return;
+ ec.IsStatic = false;
}
- LabelParameters (ec, ParameterTypes (parent), ConstructorBuilder);
+ LabelParameters (ec, ParameterTypes, ConstructorBuilder);
//
// Classes can have base initializers and instance field initializers.
//
if (parent is Class){
- if ((ModFlags & Modifiers.STATIC) == 0){
- Initializer.Emit (ec);
- parent.EmitFieldInitializers (ec, false);
- }
+ if ((ModFlags & Modifiers.STATIC) == 0)
+ parent.EmitFieldInitializers (ec);
}
+ if (Initializer != null)
+ Initializer.Emit (ec);
if ((ModFlags & Modifiers.STATIC) != 0)
- parent.EmitFieldInitializers (ec, true);
+ parent.EmitFieldInitializers (ec);
Attribute.ApplyAttributes (ec, ConstructorBuilder, this, OptAttributes, Location);
- ec.EmitTopBlock (Block, Location);
+ // If this is a non-static `struct' constructor and doesn't have any
+ // initializer, it must initialize all of the struct's fields.
+ if ((parent is Struct) && ((ModFlags & Modifiers.STATIC) == 0) &&
+ (Initializer == null))
+ Block.AddThisVariable (parent, Location);
+
+ ec.EmitTopBlock (Block, ParameterInfo, Location);
}
}
-
- public class Field : MemberCore {
- public readonly string Type;
- public readonly Object Initializer;
+
+ public class MethodData {
+ //
+ // The return type of this method
+ //
+ public readonly Type ReturnType;
+ public readonly Type[] ParameterTypes;
+ public readonly InternalParameters ParameterInfo;
+ public readonly CallingConventions CallingConventions;
public readonly Attributes OptAttributes;
- public FieldBuilder FieldBuilder;
- public Status status;
+ public readonly Location Location;
- [Flags]
- public enum Status : byte { ASSIGNED = 1, USED = 2 }
+ //
+ // Are we implementing an interface ?
+ //
+ public bool IsImplementing = false;
-
- // <summary>
- // Modifiers allowed in a class declaration
- // </summary>
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
+ //
+ // Protected data.
+ //
+ protected MemberBase member;
+ protected int modifiers;
+ protected MethodAttributes flags;
+ protected bool is_method;
+ protected string accessor_name;
+ ArrayList conditionals;
+
+ MethodBuilder builder = null;
+ public MethodBuilder MethodBuilder {
+ get {
+ return builder;
+ }
+ }
+
+ public MethodData (MemberBase member, string name, Type return_type,
+ Type [] parameter_types, InternalParameters parameters,
+ CallingConventions cc, Attributes opt_attrs,
+ int modifiers, MethodAttributes flags, bool is_method)
+ {
+ this.member = member;
+ this.accessor_name = name;
+ this.ReturnType = return_type;
+ this.ParameterTypes = parameter_types;
+ this.ParameterInfo = parameters;
+ this.CallingConventions = cc;
+ this.OptAttributes = opt_attrs;
+ this.modifiers = modifiers;
+ this.flags = flags;
+ this.is_method = is_method;
+ this.Location = member.Location;
+ this.conditionals = new ArrayList ();
+ }
+
+ //
+ // Attributes.
+ //
+ Attribute dllimport_attribute = null;
+ string obsolete = null;
+ bool obsolete_error = false;
+
+ public virtual bool ApplyAttributes (Attributes opt_attrs, bool is_method)
+ {
+ if ((opt_attrs == null) || (opt_attrs.AttributeSections == null))
+ return true;
+
+ foreach (AttributeSection asec in opt_attrs.AttributeSections) {
+ if (asec.Attributes == null)
+ continue;
+
+ foreach (Attribute a in asec.Attributes) {
+ if (a.Name == "Conditional") {
+ if (!ApplyConditionalAttribute (a))
+ return false;
+ } else if (a.Name == "Obsolete") {
+ if (!ApplyObsoleteAttribute (a))
+ return false;
+ } else if (a.Name.IndexOf ("DllImport") != -1) {
+ if (!is_method) {
+ a.Type = TypeManager.dllimport_type;
+ Attribute.Error_AttributeNotValidForElement (a, Location);
+ return false;
+ }
+ if (!ApplyDllImportAttribute (a))
+ return false;
+ }
+ }
+ }
+
+ return true;
+ }
+
+ //
+ // Applies the `DllImport' attribute to the method.
+ //
+ protected virtual bool ApplyDllImportAttribute (Attribute a)
+ {
+ const int extern_static = Modifiers.EXTERN | Modifiers.STATIC;
+ if ((modifiers & extern_static) != extern_static) {
+ Report.Error (601, Location,
+ "The DllImport attribute must be specified on a method " +
+ "marked `static' and `extern'.");
+ return false;
+ }
+
+ flags |= MethodAttributes.PinvokeImpl;
+ dllimport_attribute = a;
+ return true;
+ }
+
+ //
+ // Applies the `Obsolete' attribute to the method.
+ //
+ protected virtual bool ApplyObsoleteAttribute (Attribute a)
+ {
+ if (obsolete != null) {
+ Report.Error (579, Location, "Duplicate `Obsolete' attribute");
+ return false;
+ }
+
+ obsolete = a.Obsolete_GetObsoleteMessage (out obsolete_error);
+ return obsolete != null;
+ }
+
+ //
+ // Applies the `Conditional' attribute to the method.
+ //
+ protected virtual bool ApplyConditionalAttribute (Attribute a)
+ {
+ // The Conditional attribute is only valid on methods.
+ if (!is_method) {
+ Attribute.Error_AttributeNotValidForElement (a, Location);
+ return false;
+ }
+
+ string condition = a.Conditional_GetConditionName ();
+
+ if (condition == null)
+ return false;
+
+ if (ReturnType != TypeManager.void_type) {
+ Report.Error (578, Location,
+ "Conditional not valid on `" + member.Name + "' " +
+ "because its return type is not void");
+ return false;
+ }
+
+ if ((modifiers & Modifiers.OVERRIDE) != 0) {
+ Report.Error (243, Location,
+ "Conditional not valid on `" + member.Name + "' " +
+ "because it is an override method");
+ return false;
+ }
+
+ if (member.IsExplicitImpl) {
+ Report.Error (577, Location,
+ "Conditional not valid on `" + member.Name + "' " +
+ "because it is an explicit interface implementation");
+ return false;
+ }
+
+ if (IsImplementing) {
+ Report.Error (623, Location,
+ "Conditional not valid on `" + member.Name + "' " +
+ "because it is an interface method");
+ return false;
+ }
+
+ conditionals.Add (condition);
+
+ return true;
+ }
+
+ //
+ // Checks whether this method should be ignored due to its Conditional attributes.
+ //
+ bool ShouldIgnore (Location loc)
+ {
+ // When we're overriding a virtual method, we implicitly inherit the
+ // Conditional attributes from our parent.
+ if (member.ParentMethod != null) {
+ TypeManager.MethodFlags flags = TypeManager.GetMethodFlags (
+ member.ParentMethod, loc);
+
+ if ((flags & TypeManager.MethodFlags.ShouldIgnore) != 0)
+ return true;
+ }
+
+ foreach (string condition in conditionals)
+ if (RootContext.AllDefines [condition] == null)
+ return true;
+
+ return false;
+ }
+
+ //
+ // 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.
+ //
+ public virtual TypeManager.MethodFlags GetMethodFlags (Location loc)
+ {
+ TypeManager.MethodFlags flags = 0;
+
+ if (obsolete != null) {
+ if (obsolete_error) {
+ Report.Error (619, loc, "Method `" + member.Name +
+ "' is obsolete: `" + obsolete + "'");
+ return TypeManager.MethodFlags.IsObsoleteError;
+ } else
+ Report.Warning (618, loc, "Method `" + member.Name +
+ "' is obsolete: `" + obsolete + "'");
+
+ flags |= TypeManager.MethodFlags.IsObsolete;
+ }
+
+ if (ShouldIgnore (loc))
+ flags |= TypeManager.MethodFlags.ShouldIgnore;
+
+ return flags;
+ }
+
+ public virtual bool Define (TypeContainer parent)
+ {
+ MethodInfo implementing = null;
+ string method_name, name, prefix;
+
+ if (OptAttributes != null)
+ if (!ApplyAttributes (OptAttributes, is_method))
+ return false;
+
+ if (member.IsExplicitImpl)
+ prefix = member.InterfaceType.FullName + ".";
+ else
+ prefix = "";
+
+ if (accessor_name != null)
+ name = accessor_name + "_" + member.ShortName;
+ else
+ name = member.ShortName;
+ method_name = prefix + name;
+
+ if (parent.Pending != null){
+ if (member is Indexer)
+ implementing = parent.Pending.IsInterfaceIndexer (
+ member.InterfaceType, ReturnType, ParameterTypes);
+ else
+ implementing = parent.Pending.IsInterfaceMethod (
+ member.InterfaceType, name, ReturnType, ParameterTypes);
+
+ if (member.InterfaceType != null && implementing == null){
+ TypeContainer.Error_ExplicitInterfaceNotMemberInterface (
+ Location, name);
+ return false;
+ }
+ }
+
+ //
+ // For implicit implementations, make sure we are public, for
+ // explicit implementations, make sure we are private.
+ //
+ if (implementing != null){
+ //
+ // Setting null inside this block will trigger a more
+ // verbose error reporting for missing interface implementations
+ //
+ // The "candidate" function has been flagged already
+ // but it wont get cleared
+ //
+ if (!member.IsExplicitImpl){
+ //
+ // We already catch different accessibility settings
+ // so we just need to check that we are not private
+ //
+ if ((modifiers & Modifiers.PRIVATE) != 0)
+ implementing = null;
+
+ //
+ // Static is not allowed
+ //
+ if ((modifiers & Modifiers.STATIC) != 0)
+ implementing = null;
+ } else {
+ if ((modifiers & (Modifiers.PUBLIC | Modifiers.ABSTRACT | Modifiers.VIRTUAL)) != 0){
+ Modifiers.Error_InvalidModifier (Location, "public, virtual or abstract");
+ implementing = null;
+ }
+ }
+ }
+
+ //
+ // If implementing is still valid, set flags
+ //
+ if (implementing != null){
+ //
+ // When implementing interface methods, set NewSlot.
+ //
+ if (implementing.DeclaringType.IsInterface)
+ flags |= MethodAttributes.NewSlot;
+
+ flags |=
+ MethodAttributes.Virtual |
+ MethodAttributes.HideBySig;
+
+ // Get the method name from the explicit interface.
+ if (member.InterfaceType != null) {
+ name = implementing.Name;
+ method_name = prefix + name;
+ }
+
+ IsImplementing = true;
+ }
+
+ //
+ // Create the MethodBuilder for the method
+ //
+ if ((flags & MethodAttributes.PinvokeImpl) != 0) {
+ if ((modifiers & Modifiers.STATIC) == 0) {
+ Report.Error (601, Location,
+ "The DllImport attribute must be specified on " +
+ "a method marked 'static' and 'extern'.");
+ return false;
+ }
+
+ EmitContext ec = new EmitContext (
+ parent, Location, null, ReturnType, modifiers);
+
+ builder = dllimport_attribute.DefinePInvokeMethod (
+ ec, parent.TypeBuilder, method_name, flags,
+ ReturnType, ParameterTypes);
+ } else
+ builder = parent.TypeBuilder.DefineMethod (
+ method_name, flags, CallingConventions,
+ ReturnType, ParameterTypes);
+
+ if (builder == null)
+ return false;
+
+ if (IsImplementing) {
+ //
+ // clear the pending implemntation flag
+ //
+ if (member is Indexer) {
+ parent.Pending.ImplementIndexer (
+ member.InterfaceType, builder, ReturnType,
+ ParameterTypes, true);
+ } else
+ parent.Pending.ImplementMethod (
+ member.InterfaceType, name, ReturnType,
+ ParameterTypes, member.IsExplicitImpl);
+
+ if (member.IsExplicitImpl)
+ parent.TypeBuilder.DefineMethodOverride (
+ builder, implementing);
+ }
+
+ if (!TypeManager.RegisterMethod (builder, ParameterInfo, ParameterTypes)) {
+ Report.Error (111, Location,
+ "Class `" + parent.Name +
+ "' already contains a definition with the " +
+ "same return value and parameter types as the " +
+ "'get' method of property `" + member.Name + "'");
+ return false;
+ }
+
+ TypeManager.AddMethod (builder, this);
+
+ return true;
+ }
+
+ //
+ // Emits the code
+ //
+ public virtual void Emit (TypeContainer parent, Block block, object kind)
+ {
+ ILGenerator ig;
+ EmitContext ec;
+
+ if ((flags & MethodAttributes.PinvokeImpl) == 0)
+ ig = builder.GetILGenerator ();
+ else
+ ig = null;
+
+ ec = new EmitContext (parent, Location, ig, ReturnType, modifiers);
+
+ if (OptAttributes != null)
+ Attribute.ApplyAttributes (ec, builder, kind, OptAttributes, Location);
+
+ if (member is MethodCore)
+ ((MethodCore) member).LabelParameters (ec, ParameterTypes, MethodBuilder);
+
+ //
+ // abstract or extern methods have no bodies
+ //
+ if ((modifiers & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0){
+ if (block == null)
+ return;
+
+ //
+ // abstract or extern methods have no bodies.
+ //
+ if ((modifiers & Modifiers.ABSTRACT) != 0)
+ Report.Error (
+ 500, Location, "Abstract method `" +
+ TypeManager.CSharpSignature (builder) +
+ "' can not have a body");
+
+ if ((modifiers & Modifiers.EXTERN) != 0)
+ Report.Error (
+ 179, Location, "External method `" +
+ TypeManager.CSharpSignature (builder) +
+ "' can not have a body");
+
+ return;
+ }
+
+ //
+ // Methods must have a body unless they're extern or abstract
+ //
+ if (block == null) {
+ Report.Error (
+ 501, Location, "Method `" +
+ TypeManager.CSharpSignature (builder) +
+ "' must declare a body since it is not marked " +
+ "abstract or extern");
+ return;
+ }
+
+ //
+ // Handle destructors specially
+ //
+ // FIXME: This code generates buggy code
+ //
+ if (member.Name == "Finalize" && ReturnType == TypeManager.void_type)
+ EmitDestructor (ec, block);
+ else {
+ ISymbolWriter sw = CodeGen.SymbolWriter;
+
+ if ((sw != null) && !Location.IsNull (Location) &&
+ !Location.IsNull (block.EndLocation)) {
+ Location end = block.EndLocation;
+ MethodToken token = MethodBuilder.GetToken ();
+ sw.OpenMethod (new SymbolToken (token.Token));
+ sw.SetMethodSourceRange (Location.SymbolDocument,
+ Location.Row, 0,
+ end.SymbolDocument,
+ end.Row, 0);
+
+ ec.EmitTopBlock (block, ParameterInfo, Location);
+
+ sw.CloseMethod ();
+ } else
+ ec.EmitTopBlock (block, ParameterInfo, Location);
+ }
+ }
+
+ void EmitDestructor (EmitContext ec, Block block)
+ {
+ ILGenerator ig = ec.ig;
+
+ Label finish = ig.DefineLabel ();
+ bool old_in_try = ec.InTry;
+
+ ig.BeginExceptionBlock ();
+ ec.InTry = true;
+ ec.ReturnLabel = finish;
+ ec.HasReturnLabel = true;
+ ec.EmitTopBlock (block, null, Location);
+ ec.InTry = old_in_try;
+
+ // ig.MarkLabel (finish);
+ bool old_in_finally = ec.InFinally;
+ ec.InFinally = true;
+ ig.BeginFinallyBlock ();
+
+ if (ec.ContainerType.BaseType != null) {
+ Expression member_lookup = Expression.MemberLookup (
+ ec, ec.ContainerType.BaseType, "Finalize",
+ MemberTypes.Method, Expression.AllBindingFlags, Location);
+
+ if (member_lookup != null){
+ MethodGroupExpr parent_destructor = ((MethodGroupExpr) member_lookup);
+
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Call, (MethodInfo) parent_destructor.Methods [0]);
+ }
+ }
+ ec.InFinally = old_in_finally;
+
+ ig.EndExceptionBlock ();
+ //ig.MarkLabel (ec.ReturnLabel);
+ ig.Emit (OpCodes.Ret);
+ }
+ }
+
+ abstract public class MemberBase : MemberCore {
+ public Expression Type;
+ public readonly Attributes OptAttributes;
+
+ protected MethodAttributes flags;
+
+ //
+ // The "short" name of this property / indexer / event. This is the
+ // name without the explicit interface.
+ //
+ public string ShortName;
+
+ //
+ // The type of this property / indexer / event
+ //
+ public Type MemberType;
+
+ //
+ // If true, this is an explicit interface implementation
+ //
+ public bool IsExplicitImpl = false;
+
+ //
+ // The name of the interface we are explicitly implementing
+ //
+ public string ExplicitInterfaceName = null;
+
+ //
+ // If true, the interface type we are explicitly implementing
+ //
+ public Type InterfaceType = null;
+
+ //
+ // The method we're overriding if this is an override method.
+ //
+ protected MethodInfo parent_method = null;
+ public MethodInfo ParentMethod {
+ get {
+ return parent_method;
+ }
+ }
+
+ //
+ // The constructor is only exposed to our children
+ //
+ protected MemberBase (Expression type, int mod, int allowed_mod, string name,
+ Attributes attrs, Location loc)
+ : base (name, loc)
+ {
+ Type = type;
+ ModFlags = Modifiers.Check (allowed_mod, mod, Modifiers.PRIVATE, loc);
+ OptAttributes = attrs;
+ }
+
+ protected virtual bool CheckBase (TypeContainer parent)
+ {
+ return true;
+ }
+
+ protected virtual bool CheckParameters (TypeContainer parent, Type [] parameters)
+ {
+ bool error = false;
+
+ foreach (Type partype in parameters){
+ if (partype.IsPointer && !UnsafeOK (parent))
+ error = true;
+
+ if (parent.AsAccessible (partype, ModFlags))
+ continue;
+
+ if (this is Indexer)
+ Report.Error (55, Location,
+ "Inconsistent accessibility: parameter type `" +
+ TypeManager.CSharpName (partype) + "' is less " +
+ "accessible than indexer `" + Name + "'");
+ else
+ Report.Error (51, Location,
+ "Inconsistent accessibility: parameter type `" +
+ TypeManager.CSharpName (partype) + "' is less " +
+ "accessible than method `" + Name + "'");
+ error = true;
+ }
+
+ return !error;
+ }
+
+ protected virtual bool DoDefine (TypeContainer parent)
+ {
+ if (Name == null)
+ Name = "this";
+
+ if (!parent.MethodModifiersValid (ModFlags, Name, Location))
+ return false;
+
+ flags = Modifiers.MethodAttr (ModFlags);
+
+ // Lookup Type, verify validity
+ MemberType = parent.ResolveType (Type, false, Location);
+ if (MemberType == null)
+ return false;
+
+ // verify accessibility
+ if (!parent.AsAccessible (MemberType, ModFlags)) {
+ if (this is Property)
+ Report.Error (53, Location,
+ "Inconsistent accessibility: property type `" +
+ TypeManager.CSharpName (MemberType) + "' is less " +
+ "accessible than property `" + Name + "'");
+ else if (this is Indexer)
+ Report.Error (54, Location,
+ "Inconsistent accessibility: indexer return type `" +
+ TypeManager.CSharpName (MemberType) + "' is less " +
+ "accessible than indexer `" + Name + "'");
+ else if (this is Method)
+ Report.Error (50, Location,
+ "Inconsistent accessibility: return type `" +
+ TypeManager.CSharpName (MemberType) + "' is less " +
+ "accessible than method `" + Name + "'");
+ else
+ Report.Error (52, Location,
+ "Inconsistent accessibility: field type `" +
+ TypeManager.CSharpName (MemberType) + "' is less " +
+ "accessible than field `" + Name + "'");
+ return false;
+ }
+
+ if (MemberType.IsPointer && !UnsafeOK (parent))
+ return false;
+
+ //
+ // Check for explicit interface implementation
+ //
+ if ((ExplicitInterfaceName == null) && (Name.IndexOf (".") != -1)){
+ int pos = Name.LastIndexOf (".");
+
+ ExplicitInterfaceName = Name.Substring (0, pos);
+ ShortName = Name.Substring (pos + 1);
+ } else
+ ShortName = Name;
+
+ if (ExplicitInterfaceName != null) {
+ InterfaceType = RootContext.LookupType (
+ parent, ExplicitInterfaceName, false, Location);
+ if (InterfaceType == null)
+ return false;
+
+ // Compute the full name that we need to export.
+ Name = InterfaceType.FullName + "." + ShortName;
+
+ if (!parent.VerifyImplements (InterfaceType, ShortName, Name, Location))
+ return false;
+
+ IsExplicitImpl = true;
+ } else
+ IsExplicitImpl = false;
+
+ return true;
+ }
+ }
+
+ //
+ // Fields and Events both generate FieldBuilders, we use this to share
+ // their common bits. This is also used to flag usage of the field
+ //
+ abstract public class FieldBase : MemberBase {
+ public FieldBuilder FieldBuilder;
+ public Status status;
+
+ [Flags]
+ public enum Status : byte { ASSIGNED = 1, USED = 2 }
+
+ //
+ // The constructor is only exposed to our children
+ //
+ protected FieldBase (Expression type, int mod, int allowed_mod, string name,
+ object init, Attributes attrs, Location loc)
+ : base (type, mod, allowed_mod, name, attrs, loc)
+ {
+ this.init = init;
+ }
+
+ //
+ // Whether this field has an initializer.
+ //
+ public bool HasInitializer {
+ get {
+ return init != null;
+ }
+ }
+
+ // Private.
+ readonly Object init;
+ Expression init_expr;
+ bool init_expr_initialized = false;
+
+ //
+ // Resolves and returns the field initializer.
+ //
+ public Expression GetInitializerExpression (EmitContext ec)
+ {
+ if (init_expr_initialized)
+ return init_expr;
+
+ Expression e;
+ if (init is Expression)
+ e = (Expression) init;
+ else
+ e = new ArrayCreation (Type, "", (ArrayList)init, Location);
+
+ ec.IsFieldInitializer = true;
+ e = e.DoResolve (ec);
+ ec.IsFieldInitializer = false;
+
+ init_expr = e;
+ init_expr_initialized = true;
+
+ return init_expr;
+ }
+ }
+
+ //
+ // The Field class is used to represents class/struct fields during parsing.
+ //
+ public class Field : FieldBase {
+ // <summary>
+ // Modifiers allowed in a class declaration
+ // </summary>
+ const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
Modifiers.INTERNAL |
Modifiers.PRIVATE |
Modifiers.STATIC |
Modifiers.UNSAFE |
Modifiers.READONLY;
- public Field (string type, int mod, string name, Object expr_or_array_init,
+ public Field (Expression type, int mod, string name, Object expr_or_array_init,
Attributes attrs, Location loc)
- : base (name, loc)
+ : base (type, mod, AllowedModifiers, name, expr_or_array_init, attrs, loc)
{
- Type = type;
- ModFlags = Modifiers.Check (AllowedModifiers, mod, Modifiers.PRIVATE, loc);
- Initializer = expr_or_array_init;
- OptAttributes = attrs;
}
public override bool Define (TypeContainer parent)
{
- Type t = RootContext.LookupType (parent, Type, false, Location);
+ Type t = parent.ResolveType (Type, false, Location);
if (t == null)
return false;
- if (!TypeContainer.AsAccessible (t, ModFlags))
+ if (!parent.AsAccessible (t, ModFlags)) {
+ Report.Error (52, Location,
+ "Inconsistent accessibility: field type `" +
+ TypeManager.CSharpName (t) + "' is less " +
+ "accessible than field `" + Name + "'");
return false;
+ }
if (t.IsPointer && !UnsafeOK (parent))
return false;
// ptype is only null for System.Object while compiling corlib.
if (ptype != null){
- MemberInfo [] mi;
-
- mi = TypeContainer.FindMembers (
+ TypeContainer.FindMembers (
ptype, MemberTypes.Method,
BindingFlags.Public |
BindingFlags.Static | BindingFlags.Instance,
FieldBuilder = parent.TypeBuilder.DefineField (
Name, t, Modifiers.FieldAttr (ModFlags));
- TypeManager.RegisterField (FieldBuilder, this);
+ TypeManager.RegisterFieldBase (FieldBuilder, this);
return true;
}
}
}
- public class Property : MemberCore {
- public readonly string Type;
- public Block Get, Set;
- public PropertyBuilder PropertyBuilder;
- public Attributes OptAttributes;
- public MethodBuilder GetBuilder, SetBuilder;
-
+ //
+ // `set' and `get' accessors are represented with an Accessor.
+ //
+ public class Accessor {
+ //
+ // Null if the accessor is empty, or a Block if not
//
- // The type, once we compute it.
+ public Block Block;
+ public Attributes OptAttributes;
- Type PropertyType;
+ public Accessor (Block b, Attributes attrs)
+ {
+ Block = b;
+ OptAttributes = attrs;
+ }
+ }
- const int AllowedModifiers =
- Modifiers.NEW |
- Modifiers.PUBLIC |
- Modifiers.PROTECTED |
- Modifiers.INTERNAL |
- Modifiers.PRIVATE |
- Modifiers.STATIC |
- Modifiers.SEALED |
- Modifiers.OVERRIDE |
- Modifiers.ABSTRACT |
- Modifiers.UNSAFE |
- Modifiers.VIRTUAL;
+ //
+ // Properties and Indexers both generate PropertyBuilders, we use this to share
+ // their common bits.
+ //
+ abstract public class PropertyBase : MethodCore {
+ public Accessor Get, Set;
+ public PropertyBuilder PropertyBuilder;
+ public MethodBuilder GetBuilder, SetBuilder;
+ public MethodData GetData, SetData;
- public Property (string type, string name, int mod_flags, Block get_block, Block set_block,
- Attributes attrs, Location loc)
- : base (name, loc)
+ protected EmitContext ec;
+
+ public PropertyBase (Expression type, string name, int mod_flags, int allowed_mod,
+ Parameters parameters, Accessor get_block, Accessor set_block,
+ Attributes attrs, Location loc)
+ : base (type, mod_flags, allowed_mod, name, attrs, parameters, loc)
{
- Type = type;
- ModFlags = Modifiers.Check (AllowedModifiers, mod_flags, Modifiers.PRIVATE, loc);
Get = get_block;
Set = set_block;
- OptAttributes = attrs;
+ }
+
+ protected override bool DoDefine (TypeContainer parent)
+ {
+ if (!base.DoDefine (parent))
+ return false;
+
+ ec = new EmitContext (parent, Location, null, MemberType, ModFlags);
+
+ return true;
}
//
// Checks our base implementation if any
//
- bool CheckBase (TypeContainer parent)
+ protected override bool CheckBase (TypeContainer parent)
{
+ // Check whether arguments were correct.
+ if (!DoDefineParameters (parent))
+ return false;
+
+ MethodSignature ms = new MethodSignature (Name, null, ParameterTypes);
+ MemberList props_this;
+
+ props_this = TypeContainer.FindMembers (
+ parent.TypeBuilder, MemberTypes.Property,
+ BindingFlags.NonPublic | BindingFlags.Public |
+ BindingFlags.Static | BindingFlags.Instance |
+ BindingFlags.DeclaredOnly,
+ MethodSignature.method_signature_filter, ms);
+
+ if (props_this.Count > 0) {
+ Report.Error (111, Location, "Class `" + parent.Name + "' " +
+ "already defines a member called `" + Name + "' " +
+ "with the same parameter types");
+ return false;
+ }
+
//
// Find properties with the same name on the base class
//
- MemberInfo [] props;
- MemberInfo [] props_static = TypeContainer.FindMembers (
- parent.TypeBuilder.BaseType,
- MemberTypes.All, BindingFlags.Public | BindingFlags.Static,
- System.Type.FilterName, Name);
-
- MemberInfo [] props_instance = TypeContainer.FindMembers (
- parent.TypeBuilder.BaseType,
- MemberTypes.All, BindingFlags.Public | BindingFlags.Instance,
- System.Type.FilterName, Name);
+ MemberList props;
+ MemberList props_static = TypeContainer.FindMembers (
+ parent.TypeBuilder.BaseType, MemberTypes.Property,
+ BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static,
+ MethodSignature.inheritable_property_signature_filter, ms);
+
+ MemberList props_instance = TypeContainer.FindMembers (
+ parent.TypeBuilder.BaseType, MemberTypes.Property,
+ BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance,
+ MethodSignature.inheritable_property_signature_filter,
+ ms);
//
// Find if we have anything
//
- if (props_static != null && props_static.Length > 0)
+ if (props_static.Count > 0)
props = props_static;
- else if (props_instance != null && props_instance.Length > 0)
+ else if (props_instance.Count > 0)
props = props_instance;
else
props = null;
//
// If we have something on the base.
- if (props != null && props.Length > 0){
- //
- // FIXME:
- // Currently we expect only to get 1 match at most from our
- // base class, maybe we can get more than one, investigate
- // whether this is possible
- //
- if (props.Length > 1)
- throw new Exception ("How do we handle this?");
-
+ if (props != null && props.Count > 0){
PropertyInfo pi = (PropertyInfo) props [0];
MethodInfo inherited_get = TypeManager.GetPropertyGetter (pi);
MethodInfo reference = inherited_get == null ?
inherited_set : inherited_get;
- if (!CheckMethodAgainstBase (parent, reference))
+ if (reference != null) {
+ string name = reference.DeclaringType.Name + "." + Name;
+
+ if (!CheckMethodAgainstBase (parent, flags, reference, name))
+ return false;
+ }
+
+ if (((ModFlags & Modifiers.NEW) == 0) && (pi.PropertyType != MemberType)) {
+ Report.Error (508, parent.MakeName (Name) + ": cannot " +
+ "change return type when overriding inherited " +
+ "member `" + pi.DeclaringType + "." + pi.Name + "'");
return false;
+ }
} else {
if ((ModFlags & Modifiers.NEW) != 0)
WarningNotHiding (parent);
if ((ModFlags & Modifiers.OVERRIDE) != 0){
- Report.Error (115, Location,
- parent.MakeName (Name) +
- " no suitable methods found to override");
+ if (this is Indexer)
+ Report.Error (115, Location,
+ parent.MakeName (Name) +
+ " no suitable indexers found to override");
+ else
+ Report.Error (115, Location,
+ parent.MakeName (Name) +
+ " no suitable properties found to override");
return false;
}
}
return true;
}
- bool DefineMethod (TypeContainer parent, Type iface_type, string short_name, bool is_get)
+ public void Emit (TypeContainer tc)
{
- MethodAttributes flags = Modifiers.MethodAttr (ModFlags);
- Type [] parameters = TypeManager.NoTypes;
- MethodInfo implementing;
- Type fn_type;
- string name;
-
- flags |= MethodAttributes.HideBySig |
- MethodAttributes.SpecialName;
-
- if (is_get){
- fn_type = PropertyType;
- name = "get_" + short_name;
- } else {
- name = "set_" + short_name;
- parameters = new Type [1];
- parameters [0] = PropertyType;
- fn_type = TypeManager.void_type;
- }
-
- implementing = parent.IsInterfaceMethod (
- iface_type, name, fn_type, parameters, false);
-
- //
- // For implicit implementations, make sure we are public, for
- // explicit implementations, make sure we are private.
- //
- if (implementing != null){
- //
- // Setting null inside this block will trigger a more
- // verbose error reporting for missing interface implementations
- //
- // The "candidate" function has been flagged already
- // but it wont get cleared
- //
- if (iface_type == null){
- if ((ModFlags & Modifiers.PUBLIC) == 0)
- implementing = null;
- if ((ModFlags & Modifiers.STATIC) != 0)
- implementing = null;
- } else {
- if ((ModFlags & (Modifiers.PUBLIC | Modifiers.ABSTRACT)) != 0){
- Report.Error (
- 106, Location, "`public' or `abstract' modifiers "+
- "are not allowed in explicit interface declarations"
- );
- implementing = null;
- }
- }
- }
-
//
- // If implementing is still valid, set flags
+ // The PropertyBuilder can be null for explicit implementations, in that
+ // case, we do not actually emit the ".property", so there is nowhere to
+ // put the attribute
//
- if (implementing != null){
- flags |=
- MethodAttributes.Virtual |
- // removed newslot
- MethodAttributes.HideBySig;
+ if (PropertyBuilder != null)
+ Attribute.ApplyAttributes (ec, PropertyBuilder, this, OptAttributes, Location);
- // If an interface implementation, then we can set Final.
- if (((flags & MethodAttributes.Abstract) == 0) &&
- implementing.DeclaringType.IsInterface)
- flags |= MethodAttributes.Final;
-
- //
- // clear the pending flag
- //
- parent.IsInterfaceMethod (
- iface_type, name, fn_type, parameters, true);
- }
+ if (GetData != null)
+ GetData.Emit (tc, Get.Block, Get);
- //
- // If this is not an explicit interface implementation,
- // clear implementing, as it is only used for explicit
- // interface implementation
- //
- if (Name.IndexOf (".") == -1)
- implementing = null;
-
- if (is_get){
- GetBuilder = parent.TypeBuilder.DefineMethod (
- name, flags, PropertyType, null);
- PropertyBuilder.SetGetMethod (GetBuilder);
+ if (SetData != null)
+ SetData.Emit (tc, Set.Block, Set);
+ }
+ }
- if (implementing != null)
- parent.TypeBuilder.DefineMethodOverride (
- GetBuilder, implementing);
-
- //
- // HACK because System.Reflection.Emit is lame
- //
- InternalParameters ip = new InternalParameters (
- parent, Parameters.GetEmptyReadOnlyParameters ());
-
- if (!TypeManager.RegisterMethod (GetBuilder, ip, null)) {
- Report.Error (111, Location,
- "Class `" + parent.Name +
- "' already contains a definition with the " +
- "same return value and parameter types as the " +
- "'get' method of property `" + Name + "'");
- return false;
- }
- } else {
- SetBuilder = parent.TypeBuilder.DefineMethod (
- name, flags, null, parameters);
-
- if (implementing != null)
- parent.TypeBuilder.DefineMethodOverride (
- SetBuilder, implementing);
-
- SetBuilder.DefineParameter (1, ParameterAttributes.None, "value");
- PropertyBuilder.SetSetMethod (SetBuilder);
-
- //
- // HACK because System.Reflection.Emit is lame
- //
- Parameter [] parms = new Parameter [1];
- parms [0] = new Parameter (Type, "value", Parameter.Modifier.NONE, null);
- InternalParameters ip = new InternalParameters (
- parent, new Parameters (parms, null, Location));
-
- if (!TypeManager.RegisterMethod (SetBuilder, ip, parameters)) {
- Report.Error (
- 111, Location,
- "Class `" + parent.Name +
- "' already contains a definition with the " +
- "same return value and parameter types as the " +
- "'set' method of property `" + Name + "'");
- return false;
- }
- }
+ public class Property : PropertyBase {
+ const int AllowedModifiers =
+ Modifiers.NEW |
+ Modifiers.PUBLIC |
+ Modifiers.PROTECTED |
+ Modifiers.INTERNAL |
+ Modifiers.PRIVATE |
+ Modifiers.STATIC |
+ Modifiers.SEALED |
+ Modifiers.OVERRIDE |
+ Modifiers.ABSTRACT |
+ Modifiers.UNSAFE |
+ Modifiers.EXTERN |
+ Modifiers.VIRTUAL;
- return true;
+ public Property (Expression type, string name, int mod_flags,
+ Accessor get_block, Accessor set_block,
+ Attributes attrs, Location loc)
+ : base (type, name, mod_flags, AllowedModifiers,
+ Parameters.EmptyReadOnlyParameters,
+ get_block, set_block, attrs, loc)
+ {
}
public override bool Define (TypeContainer parent)
{
- Type iface_type = null;
- string short_name;
-
- if (!parent.MethodModifiersValid (ModFlags, Name, Location))
- return false;
-
- // Lookup Type, verify validity
- PropertyType = RootContext.LookupType (parent, Type, false, Location);
- if (PropertyType == null)
- return false;
-
- // verify accessibility
- if (!TypeContainer.AsAccessible (PropertyType, ModFlags))
+ if (!DoDefine (parent))
return false;
- if (PropertyType.IsPointer && !UnsafeOK (parent))
- return false;
-
if (!CheckBase (parent))
return false;
- //
- // Check for explicit interface implementation
- //
- if (Name.IndexOf (".") != -1){
- int pos = Name.LastIndexOf (".");
- string iface = Name.Substring (0, pos);
-
- iface_type = RootContext.LookupType (parent, iface, false, Location);
- if (iface_type == null)
- return false;
-
- short_name = Name.Substring (pos + 1);
+ flags |= MethodAttributes.HideBySig | MethodAttributes.SpecialName;
- // Compute the full name that we need to export.
- Name = iface_type.FullName + "." + short_name;
- } else
- short_name = Name;
+ if (Get != null) {
+ Type [] parameters = TypeManager.NoTypes;
- // FIXME - PropertyAttributes.HasDefault ?
+ InternalParameters ip = new InternalParameters (
+ parent, Parameters.EmptyReadOnlyParameters);
- PropertyAttributes prop_attr = PropertyAttributes.RTSpecialName |
- PropertyAttributes.SpecialName;
-
- PropertyBuilder = parent.TypeBuilder.DefineProperty (
- Name, prop_attr, PropertyType, null);
+ GetData = new MethodData (this, "get", MemberType,
+ parameters, ip, CallingConventions.Standard,
+ Get.OptAttributes, ModFlags, flags, false);
- if (Get != null)
- if (!DefineMethod (parent, iface_type, short_name, true))
- return false;
-
- if (Set != null)
- if (!DefineMethod (parent, iface_type, short_name, false))
+ if (!GetData.Define (parent))
return false;
-
- //
- // HACK for the reasons exposed above
- //
- if (!TypeManager.RegisterProperty (PropertyBuilder, GetBuilder, SetBuilder)) {
- Report.Error (
- 111, Location,
- "Class `" + parent.Name +
- "' already contains a definition for the property `" +
- Name + "'");
- return false;
+
+ GetBuilder = GetData.MethodBuilder;
}
- return true;
- }
-
- public void Emit (TypeContainer tc)
- {
- ILGenerator ig;
- EmitContext ec;
+ if (Set != null) {
+ Type [] parameters = new Type [1];
+ parameters [0] = MemberType;
- ec = new EmitContext (tc, Location, null, PropertyType, ModFlags);
- Attribute.ApplyAttributes (ec, PropertyBuilder, this, OptAttributes, Location);
-
+ Parameter [] parms = new Parameter [1];
+ parms [0] = new Parameter (Type, "value", Parameter.Modifier.NONE, null);
+ InternalParameters ip = new InternalParameters (
+ parent, new Parameters (parms, null, Location));
+
+ SetData = new MethodData (this, "set", TypeManager.void_type,
+ parameters, ip, CallingConventions.Standard,
+ Set.OptAttributes, ModFlags, flags, false);
- //
- // abstract or extern properties have no bodies
- //
- if ((ModFlags & (Modifiers.ABSTRACT | Modifiers.EXTERN)) != 0)
- return;
+ if (!SetData.Define (parent))
+ return false;
- if (Get != null){
- ig = GetBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, PropertyType, ModFlags);
-
- ec.EmitTopBlock (Get, Location);
+ SetBuilder = SetData.MethodBuilder;
+ SetBuilder.DefineParameter (1, ParameterAttributes.None, "value");
}
- if (Set != null){
- ig = SetBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, null, ModFlags);
+ // FIXME - PropertyAttributes.HasDefault ?
+
+ PropertyAttributes prop_attr =
+ PropertyAttributes.RTSpecialName |
+ PropertyAttributes.SpecialName;
+
+ if (!IsExplicitImpl){
+ PropertyBuilder = parent.TypeBuilder.DefineProperty (
+ Name, prop_attr, MemberType, null);
+
+ if (Get != null)
+ PropertyBuilder.SetGetMethod (GetBuilder);
- ec.EmitTopBlock (Set, Location);
+ if (Set != null)
+ PropertyBuilder.SetSetMethod (SetBuilder);
+
+ //
+ // HACK for the reasons exposed above
+ //
+ if (!TypeManager.RegisterProperty (PropertyBuilder, GetBuilder, SetBuilder)) {
+ Report.Error (
+ 111, Location,
+ "Class `" + parent.Name +
+ "' already contains a definition for the property `" +
+ Name + "'");
+ return false;
+ }
}
+ return true;
}
}
-
/// </summary>
/// Gigantic workaround for lameness in SRE follows :
- /// This class derived from EventInfo and attempts to basically
+ /// This class derives from EventInfo and attempts to basically
/// wrap around the EventBuilder so that FindMembers can quickly
/// return this in it search for members
/// </summary>
declaring_type = type_builder;
- // FIXME : This is supposed to be MyBuilder but since that doesn't
- // derive from Type, I have no clue what to do with this.
- reflected_type = null;
+ reflected_type = type_builder;
attributes = event_attr;
this.name = name;
}
}
- public class Event : MemberCore {
-
+ public class Event : FieldBase {
const int AllowedModifiers =
Modifiers.NEW |
Modifiers.PUBLIC |
Modifiers.UNSAFE |
Modifiers.ABSTRACT;
- public readonly string Type;
- public readonly Object Initializer;
- public readonly Block Add;
- public readonly Block Remove;
+ public readonly Accessor Add;
+ public readonly Accessor Remove;
public MyEventBuilder EventBuilder;
- public FieldBuilder FieldBuilder;
- public Attributes OptAttributes;
- Type EventType;
MethodBuilder AddBuilder, RemoveBuilder;
+ MethodData AddData, RemoveData;
-
- public Event (string type, string name, Object init, int flags, Block add_block,
- Block rem_block, Attributes attrs, Location loc)
- : base (name, loc)
+ public Event (Expression type, string name, Object init, int mod, Accessor add,
+ Accessor remove, Attributes attrs, Location loc)
+ : base (type, mod, AllowedModifiers, name, init, attrs, loc)
{
- Type = type;
- Initializer = init;
- ModFlags = Modifiers.Check (AllowedModifiers, flags, Modifiers.PRIVATE, loc);
- Add = add_block;
- Remove = rem_block;
- OptAttributes = attrs;
+ Add = add;
+ Remove = remove;
}
public override bool Define (TypeContainer parent)
{
- if (!parent.MethodModifiersValid (ModFlags, Name, Location))
- return false;
-
- MethodAttributes m_attr = Modifiers.MethodAttr (ModFlags);
EventAttributes e_attr = EventAttributes.RTSpecialName | EventAttributes.SpecialName;
- EventType = RootContext.LookupType (parent, Type, false, Location);
- if (EventType == null)
- return false;
-
- if (!TypeContainer.AsAccessible (EventType, ModFlags))
+ if (!DoDefine (parent))
return false;
- if (EventType.IsPointer && !UnsafeOK (parent))
- return false;
-
- if (!EventType.IsSubclassOf (TypeManager.delegate_type)) {
+ if (!MemberType.IsSubclassOf (TypeManager.delegate_type)) {
Report.Error (66, Location, "'" + parent.Name + "." + Name +
"' : event must be of a delegate type");
return false;
}
-
- Type [] parameters = new Type [1];
- parameters [0] = EventType;
-
- EventBuilder = new MyEventBuilder (parent.TypeBuilder, Name, e_attr, EventType);
- if (Add == null && Remove == null)
- FieldBuilder = parent.TypeBuilder.DefineField (Name, EventType, FieldAttributes.Private);
-
- //
- // Now define the accessors
- //
-
- AddBuilder = parent.TypeBuilder.DefineMethod (
- "add_" + Name, m_attr, null, parameters);
- AddBuilder.DefineParameter (1, ParameterAttributes.None, "value");
- EventBuilder.SetAddOnMethod (AddBuilder);
+ Type [] parameter_types = new Type [1];
+ parameter_types [0] = MemberType;
- //
- // HACK because System.Reflection.Emit is lame
- //
Parameter [] parms = new Parameter [1];
parms [0] = new Parameter (Type, "value", Parameter.Modifier.NONE, null);
InternalParameters ip = new InternalParameters (
- parent, new Parameters (parms, null, Location));
-
- if (!TypeManager.RegisterMethod (AddBuilder, ip, parameters)) {
- Report.Error (111, Location,
- "Class `" + parent.Name + "' already contains a definition with the " +
- "same return value and parameter types for the " +
- "'add' method of event `" + Name + "'");
+ parent, new Parameters (parms, null, Location));
+
+ if (!CheckBase (parent))
return false;
- }
-
- RemoveBuilder = parent.TypeBuilder.DefineMethod (
- "remove_" + Name, m_attr, null, parameters);
- RemoveBuilder.DefineParameter (1, ParameterAttributes.None, "value");
- EventBuilder.SetRemoveOnMethod (RemoveBuilder);
//
- // HACK because System.Reflection.Emit is lame
+ // Now define the accessors
//
+ AddData = new MethodData (this, "add", TypeManager.void_type,
+ parameter_types, ip, CallingConventions.Standard,
+ (Add != null) ? Add.OptAttributes : null,
+ ModFlags, flags, false);
- if (!TypeManager.RegisterMethod (RemoveBuilder, ip, parameters)) {
- Report.Error (111, Location,
- "Class `" + parent.Name + "' already contains a definition with the " +
- "same return value and parameter types for the " +
- "'remove' method of event `" + Name + "'");
+ if (!AddData.Define (parent))
return false;
- }
-
- if (!TypeManager.RegisterEvent (EventBuilder, AddBuilder, RemoveBuilder)) {
- Report.Error (111, Location,
- "Class `" + parent.Name +
- "' already contains a definition for the event `" +
- Name + "'");
+
+ AddBuilder = AddData.MethodBuilder;
+ AddBuilder.DefineParameter (1, ParameterAttributes.None, "value");
+
+ RemoveData = new MethodData (this, "remove", TypeManager.void_type,
+ parameter_types, ip, CallingConventions.Standard,
+ (Remove != null) ? Remove.OptAttributes : null,
+ ModFlags, flags, false);
+
+ if (!RemoveData.Define (parent))
return false;
+
+ RemoveBuilder = RemoveData.MethodBuilder;
+ RemoveBuilder.DefineParameter (1, ParameterAttributes.None, "value");
+
+ if (!IsExplicitImpl){
+ EventBuilder = new MyEventBuilder (
+ parent.TypeBuilder, Name, e_attr, MemberType);
+
+ if (Add == null && Remove == null) {
+ FieldBuilder = parent.TypeBuilder.DefineField (
+ Name, MemberType, FieldAttributes.FamANDAssem);
+ TypeManager.RegisterPrivateFieldOfEvent (
+ (EventInfo) EventBuilder, FieldBuilder);
+ TypeManager.RegisterFieldBase (FieldBuilder, this);
+ }
+
+ EventBuilder.SetAddOnMethod (AddBuilder);
+ EventBuilder.SetRemoveOnMethod (RemoveBuilder);
+
+ if (!TypeManager.RegisterEvent (EventBuilder, AddBuilder, RemoveBuilder)) {
+ Report.Error (111, Location,
+ "Class `" + parent.Name +
+ "' already contains a definition for the event `" +
+ Name + "'");
+ return false;
+ }
}
return true;
method = TypeManager.delegate_combine_delegate_delegate;
else
method = TypeManager.delegate_remove_delegate_delegate;
-
- ig.Emit (OpCodes.Ldarg_0);
- ig.Emit (OpCodes.Ldarg_0);
- ig.Emit (OpCodes.Ldfld, (FieldInfo) FieldBuilder);
- ig.Emit (OpCodes.Ldarg_1);
- ig.Emit (OpCodes.Call, method);
- ig.Emit (OpCodes.Castclass, EventType);
- ig.Emit (OpCodes.Stfld, (FieldInfo) FieldBuilder);
+
+ if ((ModFlags & Modifiers.STATIC) != 0) {
+ ig.Emit (OpCodes.Ldsfld, (FieldInfo) FieldBuilder);
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Call, method);
+ ig.Emit (OpCodes.Castclass, MemberType);
+ ig.Emit (OpCodes.Stsfld, (FieldInfo) FieldBuilder);
+ } else {
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Ldarg_0);
+ ig.Emit (OpCodes.Ldfld, (FieldInfo) FieldBuilder);
+ ig.Emit (OpCodes.Ldarg_1);
+ ig.Emit (OpCodes.Call, method);
+ ig.Emit (OpCodes.Castclass, MemberType);
+ ig.Emit (OpCodes.Stfld, (FieldInfo) FieldBuilder);
+ }
ig.Emit (OpCodes.Ret);
}
public void Emit (TypeContainer tc)
{
EmitContext ec;
- ILGenerator ig;
- ig = AddBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
+ ec = new EmitContext (tc, Location, null, MemberType, ModFlags);
+ Attribute.ApplyAttributes (ec, EventBuilder, this, OptAttributes, Location);
if (Add != null)
- ec.EmitTopBlock (Add, Location);
- else
+ AddData.Emit (tc, Add.Block, Add);
+ else {
+ ILGenerator ig = AddData.MethodBuilder.GetILGenerator ();
+ ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
EmitDefaultMethod (ec, true);
+ }
- ig = RemoveBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
-
if (Remove != null)
- ec.EmitTopBlock (Remove, Location);
- else
+ RemoveData.Emit (tc, Remove.Block, Remove);
+ else {
+ ILGenerator ig = RemoveData.MethodBuilder.GetILGenerator ();
+ ec = new EmitContext (tc, Location, ig, TypeManager.void_type, ModFlags);
EmitDefaultMethod (ec, false);
-
- ec = new EmitContext (tc, Location, null, EventType, ModFlags);
- Attribute.ApplyAttributes (ec, EventBuilder, this, OptAttributes, Location);
-
+ }
}
}
// FIXME: This does not handle:
//
// int INTERFACENAME [ args ]
+ // Does not
//
// Only:
//
// int this [ args ]
- public class Indexer : MemberCore {
+ public class Indexer : PropertyBase {
const int AllowedModifiers =
Modifiers.NEW |
Modifiers.SEALED |
Modifiers.OVERRIDE |
Modifiers.UNSAFE |
+ Modifiers.EXTERN |
Modifiers.ABSTRACT;
- public readonly string Type;
- public readonly string InterfaceType;
- public readonly Parameters FormalParameters;
- public readonly Block Get;
- public readonly Block Set;
- public Attributes OptAttributes;
- public MethodBuilder GetBuilder;
- public MethodBuilder SetBuilder;
- public PropertyBuilder PropertyBuilder;
- public Type IndexerType;
+ public string IndexerName;
+ public string InterfaceIndexerName;
- public Indexer (string type, string int_type, int flags, Parameters parms,
- Block get_block, Block set_block, Attributes attrs, Location loc)
- : base ("", loc)
+ //
+ // Are we implementing an interface ?
+ //
+ bool IsImplementing = false;
+
+ public Indexer (Expression type, string int_type, int flags, Parameters parameters,
+ Accessor get_block, Accessor set_block, Attributes attrs, Location loc)
+ : base (type, "", flags, AllowedModifiers, parameters, get_block, set_block,
+ attrs, loc)
{
-
- Type = type;
- InterfaceType = int_type;
- ModFlags = Modifiers.Check (AllowedModifiers, flags, Modifiers.PRIVATE, loc);
- FormalParameters = parms;
- Get = get_block;
- Set = set_block;
- OptAttributes = attrs;
+ ExplicitInterfaceName = int_type;
}
- void DefineMethod (TypeContainer parent, Type iface_type,
- Type ret_type, string name,
- Type [] parameters, bool is_get)
- {
- MethodAttributes attr = Modifiers.MethodAttr (ModFlags);
- MethodInfo implementing;
-
- implementing = parent.IsInterfaceMethod (
- iface_type, name, ret_type, parameters, false);
-
- //
- // Setting null inside this block will trigger a more
- // verbose error reporting for missing interface implementations
- //
- // The "candidate" function has been flagged already
- // but it wont get cleared
- //
- if (implementing != null){
- if (iface_type == null){
- if ((ModFlags & Modifiers.PUBLIC) == 0)
- implementing = null;
- if ((ModFlags & Modifiers.STATIC) != 0)
- implementing = null;
- } else {
- if((ModFlags&(Modifiers.PUBLIC | Modifiers.ABSTRACT)) != 0){
- Report.Error (
- 106, Location,
- "`public' or `abstract' modifiers are not "+
- "allowed in explicit interface declarations"
- );
- implementing = null;
- }
- }
- }
- if (implementing != null){
- attr |=
- MethodAttributes.Virtual |
- // removed newslot
- MethodAttributes.HideBySig;
-
- // If an interface implementing, then we can set final.
- if (((attr & MethodAttributes.Abstract) == 0) &&
- implementing.DeclaringType.IsInterface)
- attr |= MethodAttributes.Final;
-
- //
- // clear the pending flag
- //
- parent.IsInterfaceMethod (
- iface_type, name, ret_type, parameters, true);
- }
-
- //
- // If this is not an explicit interface implementation,
- // clear implementing, as it is only used for explicit
- // interface implementation
- //
- if (Name.IndexOf (".") == -1)
- implementing = null;
-
- if (is_get){
-
- string meth_name = "get_Item";
- if (iface_type != null)
- meth_name = iface_type + ".get_Item";
-
- GetBuilder = parent.TypeBuilder.DefineMethod (
- meth_name, attr, IndexerType, parameters);
-
- if (implementing != null)
- parent.TypeBuilder.DefineMethodOverride (
- GetBuilder, implementing);
-
-
- PropertyBuilder.SetGetMethod (GetBuilder);
- } else {
-
- string meth_name = "set_Item";
-
- if (iface_type != null)
- meth_name = iface_type + ".set_Item";
-
- SetBuilder = parent.TypeBuilder.DefineMethod (
- meth_name, attr, null, parameters);
- if (implementing != null)
- parent.TypeBuilder.DefineMethodOverride (
- SetBuilder, implementing);
-
- PropertyBuilder.SetSetMethod (SetBuilder);
- }
- }
-
public override bool Define (TypeContainer parent)
{
PropertyAttributes prop_attr =
PropertyAttributes.RTSpecialName |
PropertyAttributes.SpecialName;
- bool error = false;
- IndexerType = RootContext.LookupType (parent, Type, false, Location);
- Type [] parameters = FormalParameters.GetParameterInfo (parent);
-
- // Check if the return type and arguments were correct
- if (IndexerType == null || parameters == null)
- return false;
-
- if (!parent.MethodModifiersValid (ModFlags, InterfaceType == null ?
- "this" : InterfaceType, Location))
+ if (!DoDefine (parent))
return false;
- //
- // verify accessibility and unsafe pointers
- //
- if (!TypeContainer.AsAccessible (IndexerType, ModFlags))
- return false;
+ IndexerName = Attribute.ScanForIndexerName (ec, OptAttributes);
+ if (IndexerName == null)
+ IndexerName = "Item";
+ else if (IsExplicitImpl)
+ Report.Error (592, Location,
+ "Attribute 'IndexerName' is not valid on this declaration " +
+ "type. It is valid on `property' declarations only.");
+
+ ShortName = IndexerName;
+ if (IsExplicitImpl) {
+ InterfaceIndexerName = TypeManager.IndexerPropertyName (InterfaceType);
+ Name = InterfaceType.FullName + "." + IndexerName;
+ } else {
+ InterfaceIndexerName = IndexerName;
+ Name = ShortName;
+ }
- if (IndexerType.IsPointer && !UnsafeOK (parent))
+ if (!CheckBase (parent))
return false;
- foreach (Type partype in parameters){
- if (!TypeContainer.AsAccessible (partype, ModFlags))
- error = true;
- if (partype.IsPointer && !UnsafeOK (parent))
- error = true;
- }
+ if (Get != null){
+ InternalParameters ip = new InternalParameters (parent, Parameters);
- if (error)
- return false;
-
- Type iface_type = null;
+ GetData = new MethodData (this, "get", MemberType,
+ ParameterTypes, ip, CallingConventions.Standard,
+ Get.OptAttributes, ModFlags, flags, false);
- if (InterfaceType != null){
- iface_type = RootContext.LookupType (parent, InterfaceType, false, Location);
- if (iface_type == null)
+ if (!GetData.Define (parent))
return false;
- }
-
-
- PropertyBuilder = parent.TypeBuilder.DefineProperty (
- TypeManager.IndexerPropertyName (parent.TypeBuilder),
- prop_attr, IndexerType, parameters);
- if (Get != null){
- DefineMethod (parent, iface_type, IndexerType, "get_Item", parameters, true);
- InternalParameters pi = new InternalParameters (parent, FormalParameters);
- if (!TypeManager.RegisterMethod (GetBuilder, pi, parameters)) {
- Report.Error (111, Location,
- "Class `" + parent.Name +
- "' already contains a definition with the " +
- "same return value and parameter types for the " +
- "'get' indexer");
- return false;
- }
+ GetBuilder = GetData.MethodBuilder;
}
if (Set != null){
- int top = parameters.Length;
+ int top = ParameterTypes.Length;
Type [] set_pars = new Type [top + 1];
- parameters.CopyTo (set_pars, 0);
- set_pars [top] = IndexerType;
+ ParameterTypes.CopyTo (set_pars, 0);
+ set_pars [top] = MemberType;
- Parameter [] fixed_parms = FormalParameters.FixedParameters;
+ Parameter [] fixed_parms = Parameters.FixedParameters;
+ if (fixed_parms == null){
+ throw new Exception ("We currently do not support only array arguments in an indexer");
+ // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
+ // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
+ //
+ // Here is the problem: the `value' parameter has
+ // to come *after* the array parameter in the declaration
+ // like this:
+ // X (object [] x, Type value)
+ // .param [0]
+ //
+ // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
+ // BUG BUG BUG BUG BUG BUG BUG BUG BUG BUG
+
+ }
+
Parameter [] tmp = new Parameter [fixed_parms.Length + 1];
+
fixed_parms.CopyTo (tmp, 0);
tmp [fixed_parms.Length] = new Parameter (
Type, "value", Parameter.Modifier.NONE, null);
Parameters set_formal_params = new Parameters (tmp, null, Location);
- DefineMethod (
- parent, iface_type, TypeManager.void_type,
- "set_Item", set_pars, false);
-
InternalParameters ip = new InternalParameters (parent, set_formal_params);
-
- if (!TypeManager.RegisterMethod (SetBuilder, ip, set_pars)) {
- Report.Error (
- 111, Location,
- "Class `" + parent.Name + "' already contains a " +
- "definition with the " +
- "same return value and parameter types for the " +
- "'set' indexer");
+
+ SetData = new MethodData (this, "set", TypeManager.void_type,
+ set_pars, ip, CallingConventions.Standard,
+ Set.OptAttributes, ModFlags, flags, false);
+
+ if (!SetData.Define (parent))
return false;
- }
+
+ SetBuilder = SetData.MethodBuilder;
}
//
// Now name the parameters
//
- Parameter [] p = FormalParameters.FixedParameters;
+ Parameter [] p = Parameters.FixedParameters;
if (p != null) {
int i;
SetBuilder.DefineParameter (
i + 1, ParameterAttributes.None, "value");
- if (i != parameters.Length) {
- Parameter array_param = FormalParameters.ArrayParameter;
- SetBuilder.DefineParameter (i + 1, array_param.Attributes,
- array_param.Name);
+ if (i != ParameterTypes.Length) {
+ Parameter array_param = Parameters.ArrayParameter;
+ SetBuilder.DefineParameter (
+ i + 1, array_param.Attributes, array_param.Name);
}
}
- TypeManager.RegisterProperty (PropertyBuilder, GetBuilder, SetBuilder);
-
- return true;
- }
+ if (GetData != null)
+ IsImplementing = GetData.IsImplementing;
+ else if (SetData != null)
+ IsImplementing = SetData.IsImplementing;
- public void Emit (TypeContainer tc)
- {
- ILGenerator ig;
- EmitContext ec;
+ //
+ // Define the PropertyBuilder if one of the following conditions are met:
+ // a) we're not implementing an interface indexer.
+ // b) the indexer has a different IndexerName and this is no
+ // explicit interface implementation.
+ //
+ if (!IsExplicitImpl) {
+ PropertyBuilder = parent.TypeBuilder.DefineProperty (
+ IndexerName, prop_attr, MemberType, ParameterTypes);
- ec = new EmitContext (tc, Location, null, IndexerType, ModFlags);
- Attribute.ApplyAttributes (ec, PropertyBuilder, this, OptAttributes, Location);
+ if (GetData != null)
+ PropertyBuilder.SetGetMethod (GetBuilder);
- if (Get != null){
- ig = GetBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, IndexerType, ModFlags);
+ if (SetData != null)
+ PropertyBuilder.SetSetMethod (SetBuilder);
- ec.EmitTopBlock (Get, Location);
+ TypeManager.RegisterIndexer (PropertyBuilder, GetBuilder, SetBuilder,
+ ParameterTypes);
}
- if (Set != null){
- ig = SetBuilder.GetILGenerator ();
- ec = new EmitContext (tc, Location, ig, null, ModFlags);
-
- ec.EmitTopBlock (Set, Location);
- }
+ return true;
}
}
};
public readonly OpType OperatorType;
- public readonly string ReturnType;
- public readonly string FirstArgType;
- public readonly string FirstArgName;
- public readonly string SecondArgType;
- public readonly string SecondArgName;
+ public readonly Expression ReturnType;
+ public readonly Expression FirstArgType, SecondArgType;
+ public readonly string FirstArgName, SecondArgName;
public readonly Block Block;
public Attributes OptAttributes;
public MethodBuilder OperatorMethodBuilder;
public string MethodName;
public Method OperatorMethod;
- public Operator (OpType type, string ret_type, int flags, string arg1type, string arg1name,
- string arg2type, string arg2name, Block block, Attributes attrs, Location loc)
+ public Operator (OpType type, Expression ret_type, int flags,
+ Expression arg1type, string arg1name,
+ Expression arg2type, string arg2name,
+ Block block, Attributes attrs, Location loc)
: base ("", loc)
{
OperatorType = type;
OperatorMethod = new Method (ReturnType, ModFlags, MethodName,
new Parameters (param_list, null, Location),
OptAttributes, Mono.CSharp.Location.Null);
-
+
+ OperatorMethod.IsOperator = true;
OperatorMethod.Define (parent);
if (OperatorMethod.MethodBuilder == null)
OperatorMethodBuilder = OperatorMethod.MethodBuilder;
- Type [] param_types = OperatorMethod.ParameterTypes (parent);
+ Type [] param_types = OperatorMethod.ParameterTypes;
Type declaring_type = OperatorMethodBuilder.DeclaringType;
Type return_type = OperatorMethod.GetReturnType (parent);
Type first_arg_type = param_types [0];
/// from the current assembly and class
/// </summary>
public static MemberFilter inheritable_method_signature_filter;
+
+ /// <summary>
+ /// This delegate is used to extract inheritable methods which
+ /// have the same signature as the argument. By inheritable,
+ /// this means that we have permissions to override the method
+ /// from the current assembly and class
+ /// </summary>
+ public static MemberFilter inheritable_property_signature_filter;
static MethodSignature ()
{
method_signature_filter = new MemberFilter (MemberSignatureCompare);
inheritable_method_signature_filter = new MemberFilter (
InheritableMemberSignatureCompare);
+ inheritable_property_signature_filter = new MemberFilter (
+ InheritablePropertySignatureCompare);
}
public MethodSignature (string name, Type ret_type, Type [] parameters)
static bool MemberSignatureCompare (MemberInfo m, object filter_criteria)
{
- MethodInfo mi;
-
- if (! (m is MethodInfo))
- return false;
-
MethodSignature sig = (MethodSignature) filter_criteria;
if (m.Name != sig.Name)
return false;
-
- mi = (MethodInfo) m;
- if (mi.ReturnType != sig.RetType)
+ Type ReturnType;
+ MethodInfo mi = m as MethodInfo;
+ PropertyInfo pi = m as PropertyInfo;
+
+ if (mi != null)
+ ReturnType = mi.ReturnType;
+ else if (pi != null)
+ ReturnType = pi.PropertyType;
+ else
return false;
+
+ //
+ // we use sig.RetType == null to mean `do not check the
+ // method return value.
+ //
+ if (sig.RetType != null)
+ if (ReturnType != sig.RetType)
+ return false;
- Type [] args = TypeManager.GetArgumentTypes (mi);
+ Type [] args;
+ if (mi != null)
+ args = TypeManager.GetArgumentTypes (mi);
+ else
+ args = TypeManager.GetArgumentTypes (pi);
Type [] sigp = sig.Parameters;
if (args.Length != sigp.Length)
//
// This filter should be used when we are requesting methods that
- // we want to override.
+ // we want to override.
+ //
+ // This makes a number of assumptions, for example
+ // that the methods being extracted are of a parent
+ // class (this means we know implicitly that we are
+ // being called to find out about members by a derived
+ // class).
//
static bool InheritableMemberSignatureCompare (MemberInfo m, object filter_criteria)
{
// If only accessible to the defining assembly or
if (prot == MethodAttributes.FamANDAssem ||
prot == MethodAttributes.Assembly){
- if (m is MethodBuilder)
+ if (m.DeclaringType.Assembly == CodeGen.AssemblyBuilder)
+ return true;
+ else
+ return false;
+ }
+
+ // Anything else (FamOrAssembly and Public) is fine
+ return true;
+ }
+ return false;
+ }
+
+ //
+ // This filter should be used when we are requesting properties that
+ // we want to override.
+ //
+ // This makes a number of assumptions, for example
+ // that the methods being extracted are of a parent
+ // class (this means we know implicitly that we are
+ // being called to find out about members by a derived
+ // class).
+ //
+ static bool InheritablePropertySignatureCompare (MemberInfo m, object filter_criteria)
+ {
+ if (MemberSignatureCompare (m, filter_criteria)){
+ PropertyInfo pi = (PropertyInfo) m;
+
+ MethodInfo inherited_get = TypeManager.GetPropertyGetter (pi);
+ MethodInfo inherited_set = TypeManager.GetPropertySetter (pi);
+
+ MethodInfo mi = inherited_get == null ? inherited_set : inherited_get;
+
+ MethodAttributes prot = mi.Attributes & MethodAttributes.MemberAccessMask;
+
+ // If only accessible to the current class.
+ if (prot == MethodAttributes.Private)
+ return false;
+
+ // If only accessible to the defining assembly or
+ if (prot == MethodAttributes.FamANDAssem ||
+ prot == MethodAttributes.Assembly){
+ if (m.DeclaringType.Assembly == CodeGen.AssemblyBuilder)
return true;
else
return false;
}
return false;
}
- }
+ }
}
projects / mono.git / blobdiff