return true;
}
- /// <summary>
- /// Set the attributes on the GenericTypeParameterBuilder.
- /// </summary>
- /// <remarks>
- /// This is not done in Resolve() since Resolve() may be called before
- /// the GenericTypeParameterBuilder is created (partial generic classes).
- /// </remarks>
- public void Define (GenericTypeParameterBuilder type)
- {
- type.SetGenericParameterAttributes (attrs);
- }
-
public override GenericParameterAttributes Attributes {
get { return attrs; }
}
GenericTypeParameterBuilder type;
public TypeParameter (TypeContainer parent, DeclSpace decl, string name,
- Constraints constraints, Location loc)
- : base (parent, new MemberName (name, loc), null)
+ Constraints constraints, Attributes attrs, Location loc)
+ : base (parent, new MemberName (name, loc), attrs)
{
this.name = name;
this.decl = decl;
/// <summary>
/// This is the third method which is called during the resolving
- /// process. We're called immediately after calling Resolve() on
- /// all of the current class'es type parameters.
- ///
- /// All we do is setting the attributes on the GenericTypeParameterBuilder.
- /// </summary>
- /// <remarks>
- /// This is not done in Resolve() since Resolve() may be called before
- /// Define() for partial generic classes.
- /// </remarks>
- public void DefineConstraints ()
- {
- if (constraints != null)
- constraints.Define (type);
- }
-
- /// <summary>
- /// This is the forth method which is called during the resolving
/// process. We're called immediately after calling DefineConstraints()
/// on all of the current class'es type parameters.
///
}
/// <summary>
- /// This is the fith and last method which is called during the resolving
+ /// This is the fourth and last method which is called during the resolving
/// process. We're called after everything is fully resolved and actually
/// register the constraints with SRE and the TypeManager.
/// </summary>
mb = mb.GetGenericMethodDefinition ();
int pos = type.GenericParameterPosition;
- ParameterData pd = TypeManager.GetParameterData (mb);
- GenericConstraints temp_gc = pd.GenericConstraints (pos);
Type mparam = mb.GetGenericArguments () [pos];
+ GenericConstraints temp_gc = ReflectionConstraints.GetConstraints (mparam);
if (temp_gc != null)
gc = new InflatedConstraints (temp_gc, implementing.DeclaringType);
type.SetBaseTypeConstraint (gc.ClassConstraint);
type.SetInterfaceConstraints (gc.InterfaceConstraints);
+ type.SetGenericParameterAttributes (gc.Attributes);
TypeManager.RegisterBuilder (type, gc.InterfaceConstraints);
return true;
return constraints.CheckInterfaceMethod (ec, new_constraints);
}
+ public void EmitAttributes (EmitContext ec)
+ {
+ if (OptAttributes != null)
+ OptAttributes.Emit (ec, this);
+ }
+
public override string DocCommentHeader {
get {
throw new InvalidOperationException (
public override void ApplyAttributeBuilder (Attribute a,
CustomAttributeBuilder cb)
- { }
+ {
+ type.SetCustomAttribute (cb);
+ }
public override AttributeTargets AttributeTargets {
get {
- return (AttributeTargets) 0;
+ return (AttributeTargets) AttributeTargets.GenericParameter;
}
}
public override string[] ValidAttributeTargets {
get {
- return new string [0];
+ return new string [] { "type parameter" };
}
}
/// parser creates a `MemberName' with `TypeArguments' for both cases and
/// in case of a generic type definition, we call GetDeclarations().
/// </summary>
- public string[] GetDeclarations ()
+ public TypeParameterName[] GetDeclarations ()
{
- string[] ret = new string [args.Count];
+ TypeParameterName[] ret = new TypeParameterName [args.Count];
for (int i = 0; i < args.Count; i++) {
+ TypeParameterName name = args [i] as TypeParameterName;
+ if (name != null) {
+ ret [i] = name;
+ continue;
+ }
SimpleName sn = args [i] as SimpleName;
if (sn != null) {
- ret [i] = sn.Name;
+ ret [i] = new TypeParameterName (sn.Name, null, sn.Location);
continue;
}
Report.Error (306, Location, "The type `{0}' may not be used " +
"as a type argument.", TypeManager.CSharpName (te.Type));
return false;
+ } else if (te.Type == TypeManager.void_type) {
+ Report.Error (1547, Location,
+ "Keyword `void' cannot be used in this context");
+ return false;
}
atypes [i] = te.Type;
}
}
+ public class TypeParameterName : SimpleName
+ {
+ Attributes attributes;
+
+ public TypeParameterName (string name, Attributes attrs, Location loc)
+ : base (name, loc)
+ {
+ attributes = attrs;
+ }
+
+ public Attributes OptAttributes {
+ get {
+ return attributes;
+ }
+ }
+ }
+
/// <summary>
/// An instantiation of a generic type.
/// </summary>
return TypeManager.CSharpName (gt);
}
- protected bool CheckConstraint (EmitContext ec, Type ptype, Expression expr,
- Type ctype)
+ protected override TypeExpr DoResolveAsTypeStep (EmitContext ec)
{
- if (TypeManager.HasGenericArguments (ctype)) {
- Type[] types = TypeManager.GetTypeArguments (ctype);
+ if (!ResolveConstructedType (ec))
+ return null;
- TypeArguments new_args = new TypeArguments (loc);
+ return this;
+ }
- for (int i = 0; i < types.Length; i++) {
- Type t = types [i];
+ /// <summary>
+ /// Check the constraints; we're called from ResolveAsTypeTerminal()
+ /// after fully resolving the constructed type.
+ /// </summary>
+ public bool CheckConstraints (EmitContext ec)
+ {
+ return ConstraintChecker.CheckConstraints (ec, gt, gen_params, atypes, loc);
+ }
- if (t.IsGenericParameter) {
- int pos = t.GenericParameterPosition;
- t = args.Arguments [pos];
- }
- new_args.Add (new TypeExpression (t, loc));
- }
+ /// <summary>
+ /// Resolve the constructed type, but don't check the constraints.
+ /// </summary>
+ public bool ResolveConstructedType (EmitContext ec)
+ {
+ if (type != null)
+ return true;
+ // If we already know the fully resolved generic type.
+ if (gt != null)
+ return DoResolveType (ec);
- TypeExpr ct = new ConstructedType (ctype, new_args, loc);
- if (ct.ResolveAsTypeStep (ec) == null)
+ int num_args;
+ Type t = name.Type;
+
+ if (t == null) {
+ Report.Error (246, loc, "Cannot find type `{0}'<...>", Name);
+ return false;
+ }
+
+ num_args = TypeManager.GetNumberOfTypeArguments (t);
+ if (num_args == 0) {
+ Report.Error (308, loc,
+ "The non-generic type `{0}' cannot " +
+ "be used with type arguments.",
+ TypeManager.CSharpName (t));
+ return false;
+ }
+
+ gt = t.GetGenericTypeDefinition ();
+ return DoResolveType (ec);
+ }
+
+ bool DoResolveType (EmitContext ec)
+ {
+ //
+ // Resolve the arguments.
+ //
+ if (args.Resolve (ec) == false)
+ return false;
+
+ gen_params = gt.GetGenericArguments ();
+ atypes = args.Arguments;
+
+ if (atypes.Length != gen_params.Length) {
+ Report.Error (305, loc,
+ "Using the generic type `{0}' " +
+ "requires {1} type arguments",
+ TypeManager.CSharpName (gt),
+ gen_params.Length.ToString ());
+ return false;
+ }
+
+ //
+ // Now bind the parameters.
+ //
+ type = gt.MakeGenericType (atypes);
+ return true;
+ }
+
+ public Expression GetSimpleName (EmitContext ec)
+ {
+ return this;
+ }
+
+ public override bool CheckAccessLevel (DeclSpace ds)
+ {
+ return ds.CheckAccessLevel (gt);
+ }
+
+ public override bool AsAccessible (DeclSpace ds, int flags)
+ {
+ return ds.AsAccessible (gt, flags);
+ }
+
+ public override bool IsClass {
+ get { return gt.IsClass; }
+ }
+
+ public override bool IsValueType {
+ get { return gt.IsValueType; }
+ }
+
+ public override bool IsInterface {
+ get { return gt.IsInterface; }
+ }
+
+ public override bool IsSealed {
+ get { return gt.IsSealed; }
+ }
+
+ public override bool Equals (object obj)
+ {
+ ConstructedType cobj = obj as ConstructedType;
+ if (cobj == null)
+ return false;
+
+ if ((type == null) || (cobj.type == null))
+ return false;
+
+ return type == cobj.type;
+ }
+
+ public override int GetHashCode ()
+ {
+ return base.GetHashCode ();
+ }
+
+ public override string Name {
+ get {
+ return full_name;
+ }
+ }
+
+
+ public override string FullName {
+ get {
+ return full_name;
+ }
+ }
+ }
+
+ public abstract class ConstraintChecker
+ {
+ protected readonly Type[] gen_params;
+ protected readonly Type[] atypes;
+ protected readonly Location loc;
+
+ protected ConstraintChecker (Type[] gen_params, Type[] atypes, Location loc)
+ {
+ this.gen_params = gen_params;
+ this.atypes = atypes;
+ this.loc = loc;
+ }
+
+ /// <summary>
+ /// Check the constraints; we're called from ResolveAsTypeTerminal()
+ /// after fully resolving the constructed type.
+ /// </summary>
+ public bool CheckConstraints (EmitContext ec)
+ {
+ for (int i = 0; i < gen_params.Length; i++) {
+ if (!CheckConstraints (ec, i))
return false;
- ctype = ct.Type;
}
- return Convert.ImplicitStandardConversionExists (ec, expr, ctype);
+ return true;
}
protected bool CheckConstraints (EmitContext ec, int index)
if (HasDefaultConstructor (ec, atype))
return true;
- Report.SymbolRelatedToPreviousError (gt);
+ Report_SymbolRelatedToPreviousError ();
Report.SymbolRelatedToPreviousError (atype);
Report.Error (310, loc, "The type `{0}' must have a public " +
"parameterless constructor in order to use it " +
return false;
}
- void Error_TypeMustBeConvertible (Type atype, Type gc, Type ptype)
+ protected bool CheckConstraint (EmitContext ec, Type ptype, Expression expr,
+ Type ctype)
{
- Report.SymbolRelatedToPreviousError (gt);
- Report.SymbolRelatedToPreviousError (atype);
- Report.Error (309, loc, "The type `{0}' must be convertible to `{1}' in order to " +
- "use it as parameter `{2}' in the generic type or method `{3}'",
- TypeManager.CSharpName (atype), TypeManager.CSharpName (gc),
- TypeManager.CSharpName (ptype), GetSignatureForError ());
+ if (TypeManager.HasGenericArguments (ctype)) {
+ Type[] types = TypeManager.GetTypeArguments (ctype);
+
+ TypeArguments new_args = new TypeArguments (loc);
+
+ for (int i = 0; i < types.Length; i++) {
+ Type t = types [i];
+
+ if (t.IsGenericParameter) {
+ int pos = t.GenericParameterPosition;
+ t = atypes [pos];
+ }
+ new_args.Add (new TypeExpression (t, loc));
+ }
+
+ TypeExpr ct = new ConstructedType (ctype, new_args, loc);
+ if (ct.ResolveAsTypeStep (ec) == null)
+ return false;
+ ctype = ct.Type;
+ }
+
+ return Convert.ImplicitStandardConversionExists (ec, expr, ctype);
}
bool HasDefaultConstructor (EmitContext ec, Type atype)
if ((c.Parameters.FixedParameters != null) &&
(c.Parameters.FixedParameters.Length != 0))
continue;
- if (c.Parameters.HasArglist ||
- (c.Parameters.ArrayParameter != null))
+ if (c.Parameters.HasArglist || c.Parameters.HasParams)
continue;
return true;
return false;
}
- protected override TypeExpr DoResolveAsTypeStep (EmitContext ec)
- {
- if (!ResolveConstructedType (ec))
- return null;
-
- return this;
- }
-
- /// <summary>
- /// Check the constraints; we're called from ResolveAsTypeTerminal()
- /// after fully resolving the constructed type.
- /// </summary>
- public bool CheckConstraints (EmitContext ec)
- {
- for (int i = 0; i < gen_params.Length; i++) {
- if (!CheckConstraints (ec, i))
- return false;
- }
-
- return true;
- }
+ protected abstract string GetSignatureForError ();
+ protected abstract void Report_SymbolRelatedToPreviousError ();
- /// <summary>
- /// Resolve the constructed type, but don't check the constraints.
- /// </summary>
- public bool ResolveConstructedType (EmitContext ec)
+ void Error_TypeMustBeConvertible (Type atype, Type gc, Type ptype)
{
- if (type != null)
- return true;
- // If we already know the fully resolved generic type.
- if (gt != null)
- return DoResolveType (ec);
-
- int num_args;
- Type t = name.Type;
-
- if (t == null) {
- Report.Error (246, loc, "Cannot find type `{0}'<...>", Name);
- return false;
- }
-
- num_args = TypeManager.GetNumberOfTypeArguments (t);
- if (num_args == 0) {
- Report.Error (308, loc,
- "The non-generic type `{0}' cannot " +
- "be used with type arguments.",
- TypeManager.CSharpName (t));
- return false;
- }
-
- gt = t.GetGenericTypeDefinition ();
- return DoResolveType (ec);
+ Report_SymbolRelatedToPreviousError ();
+ Report.SymbolRelatedToPreviousError (atype);
+ Report.Error (309, loc,
+ "The type `{0}' must be convertible to `{1}' in order to " +
+ "use it as parameter `{2}' in the generic type or method `{3}'",
+ TypeManager.CSharpName (atype), TypeManager.CSharpName (gc),
+ TypeManager.CSharpName (ptype), GetSignatureForError ());
}
- bool DoResolveType (EmitContext ec)
+ public static bool CheckConstraints (EmitContext ec, MethodBase definition,
+ MethodBase instantiated, Location loc)
{
- //
- // Resolve the arguments.
- //
- if (args.Resolve (ec) == false)
- return false;
-
- gen_params = gt.GetGenericArguments ();
- atypes = args.Arguments;
+ MethodConstraintChecker checker = new MethodConstraintChecker (
+ definition, definition.GetGenericArguments (),
+ instantiated.GetGenericArguments (), loc);
- if (atypes.Length != gen_params.Length) {
- Report.Error (305, loc,
- "Using the generic type `{0}' " +
- "requires {1} type arguments",
- TypeManager.CSharpName (gt),
- gen_params.Length.ToString ());
- return false;
- }
-
- //
- // Now bind the parameters.
- //
- type = gt.MakeGenericType (atypes);
- return true;
+ return checker.CheckConstraints (ec);
}
- public Expression GetSimpleName (EmitContext ec)
+ public static bool CheckConstraints (EmitContext ec, Type gt, Type[] gen_params,
+ Type[] atypes, Location loc)
{
- return this;
- }
+ TypeConstraintChecker checker = new TypeConstraintChecker (
+ gt, gen_params, atypes, loc);
- public override bool CheckAccessLevel (DeclSpace ds)
- {
- return ds.CheckAccessLevel (gt);
+ return checker.CheckConstraints (ec);
}
- public override bool AsAccessible (DeclSpace ds, int flags)
+ protected class MethodConstraintChecker : ConstraintChecker
{
- return ds.AsAccessible (gt, flags);
- }
-
- public override bool IsClass {
- get { return gt.IsClass; }
- }
+ MethodBase definition;
- public override bool IsValueType {
- get { return gt.IsValueType; }
- }
-
- public override bool IsInterface {
- get { return gt.IsInterface; }
- }
-
- public override bool IsSealed {
- get { return gt.IsSealed; }
- }
-
- public override bool Equals (object obj)
- {
- ConstructedType cobj = obj as ConstructedType;
- if (cobj == null)
- return false;
+ public MethodConstraintChecker (MethodBase definition, Type[] gen_params,
+ Type[] atypes, Location loc)
+ : base (gen_params, atypes, loc)
+ {
+ this.definition = definition;
+ }
- if ((type == null) || (cobj.type == null))
- return false;
+ protected override string GetSignatureForError ()
+ {
+ return TypeManager.CSharpSignature (definition);
+ }
- return type == cobj.type;
+ protected override void Report_SymbolRelatedToPreviousError ()
+ {
+ Report.SymbolRelatedToPreviousError (definition);
+ }
}
- public override int GetHashCode ()
+ protected class TypeConstraintChecker : ConstraintChecker
{
- return base.GetHashCode ();
- }
+ Type gt;
- public override string Name {
- get {
- return full_name;
+ public TypeConstraintChecker (Type gt, Type[] gen_params, Type[] atypes,
+ Location loc)
+ : base (gen_params, atypes, loc)
+ {
+ this.gt = gt;
}
- }
+ protected override string GetSignatureForError ()
+ {
+ return TypeManager.CSharpName (gt);
+ }
- public override string FullName {
- get {
- return full_name;
+ protected override void Report_SymbolRelatedToPreviousError ()
+ {
+ Report.SymbolRelatedToPreviousError (gt);
}
}
}
public bool Define (MethodBuilder mb)
{
GenericTypeParameterBuilder[] gen_params;
- string[] names = MemberName.TypeArguments.GetDeclarations ();
- gen_params = mb.DefineGenericParameters (names);
+ TypeParameterName[] names = MemberName.TypeArguments.GetDeclarations ();
+ string[] snames = new string [names.Length];
+ for (int i = 0; i < names.Length; i++)
+ snames [i] = names [i].Name;
+ gen_params = mb.DefineGenericParameters (snames);
for (int i = 0; i < TypeParameters.Length; i++)
TypeParameters [i].Define (gen_params [i]);
return false;
}
- for (int i = 0; i < TypeParameters.Length; i++)
- TypeParameters [i].DefineConstraints ();
-
return true;
}
return false;
bool ok = true;
- if (parameters.FixedParameters != null) {
- foreach (Parameter p in parameters.FixedParameters){
- if (!p.Resolve (ec))
- ok = false;
- }
- }
- if (parameters.ArrayParameter != null) {
- if (!parameters.ArrayParameter.Resolve (ec))
+ foreach (Parameter p in parameters.FixedParameters){
+ if (!p.Resolve (ec))
ok = false;
}
if ((return_type != null) && (return_type.ResolveAsTypeTerminal (ec) == null))
return ok;
}
+ public void EmitAttributes (EmitContext ec)
+ {
+ for (int i = 0; i < TypeParameters.Length; i++)
+ TypeParameters [i].EmitAttributes (ec);
+
+ if (OptAttributes != null)
+ OptAttributes.Emit (ec, this);
+ }
+
public override bool DefineMembers (TypeContainer parent)
{
return true;
public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
{
- // FIXME
+ base.ApplyAttributeBuilder (a, cb);
}
public override AttributeTargets AttributeTargets {
public static TypeContainer LookupGenericTypeContainer (Type t)
{
- while (t.IsGenericInstance)
- t = t.GetGenericTypeDefinition ();
-
+ t = DropGenericTypeArguments (t);
return LookupTypeContainer (t);
}
if (tparam != null)
return tparam.GenericConstraints;
- return new ReflectionConstraints (t);
+ return ReflectionConstraints.GetConstraints (t);
}
public static bool IsGeneric (Type t)
return t.GetGenericArguments ();
}
+ public static Type DropGenericTypeArguments (Type t)
+ {
+ if (!t.IsGenericType)
+ return t;
+ // Micro-optimization: a generic typebuilder is always a generic type definition
+ if (t is TypeBuilder)
+ return t;
+ return t.GetGenericTypeDefinition ();
+ }
+
//
// Whether `array' is an array of T and `enumerator' is `IEnumerable<T>'.
// For instance "string[]" -> "IEnumerable<string>".
int tcount = GetNumberOfTypeArguments (type);
int pcount = GetNumberOfTypeArguments (parent);
- if (type.IsGenericInstance)
- type = type.GetGenericTypeDefinition ();
- if (parent.IsGenericInstance)
- parent = parent.GetGenericTypeDefinition ();
-
if (tcount != pcount)
return false;
+ type = DropGenericTypeArguments (type);
+ parent = DropGenericTypeArguments (parent);
+
return type.Equals (parent);
}
public static bool IsNullableType (Type t)
{
- if (!t.IsGenericInstance)
- return false;
-
- Type gt = t.GetGenericTypeDefinition ();
- return gt == generic_nullable_type;
+ return generic_nullable_type == DropGenericTypeArguments (t);
}
}
Type = type;
UnderlyingType = TypeManager.GetTypeArguments (type) [0];
- PropertyInfo has_value_pi = type.GetProperty ("HasValue");
- PropertyInfo value_pi = type.GetProperty ("Value");
+ PropertyInfo has_value_pi = TypeManager.GetProperty (type, "HasValue");
+ PropertyInfo value_pi = TypeManager.GetProperty (type, "Value");
HasValue = has_value_pi.GetGetMethod (false);
Value = value_pi.GetGetMethod (false);
projects / mono.git / blobdiff