// attribute.cs: Attribute Handler
//
// Author: Ravi Pratap (ravi@ximian.com)
+// Marek Safar (marek.safar@seznam.cz)
//
// Licensed under the terms of the GNU GPL
//
}
set {
attributes = value;
+ if (attributes != null)
+ attributes.CheckTargets (ValidAttributeTargets);
}
}
public abstract bool IsClsCompliaceRequired (DeclSpace ds);
/// <summary>
- /// Gets list of valid attribute targets for explicit target declaration
+ /// Gets list of valid attribute targets for explicit target declaration.
+ /// The first array item is default target. Don't break this rule.
/// </summary>
protected abstract string[] ValidAttributeTargets { get; }
};
public class Attribute {
- public readonly string Target;
+ public string Target;
public readonly string Name;
public readonly ArrayList Arguments;
}
}
+ string GetFullMemberName (string member)
+ {
+ return Type.FullName + '.' + member;
+ }
+
//
// Given an expression, if the expression is a valid attribute-argument-expression
// returns an object that can be used to encode it, or null on failure.
BindingFlags.Public | BindingFlags.Instance,
Location);
+ if (member == null) {
+ member = Expression.MemberLookup (ec, Type, member_name,
+ MemberTypes.Field | MemberTypes.Property, BindingFlags.NonPublic | BindingFlags.Instance,
+ Location);
+
+ if (member != null) {
+ Report.Error_T (122, Location, GetFullMemberName (member_name));
+ return null;
+ }
+ }
+
if (member == null || !(member is PropertyExpr || member is FieldExpr)) {
Error_InvalidNamedArgument (member_name);
return null;
return null;
}
- if (e is Constant) {
- Constant c;
-
- if (e.Type != pi.PropertyType){
- c = Const.ChangeType (Location, (Constant) e, pi.PropertyType);
+ Type type = e.Type;
+ EmptyCast ecast = e as EmptyCast;
+ if ((ecast != null) && (ecast.Child is Constant))
+ e = ecast.Child;
+
+ Constant c = e as Constant;
+ if (c != null) {
+ if (type != pi.PropertyType) {
+ c = Const.ChangeType (Location, c, pi.PropertyType);
if (c == null)
return null;
- } else
- c = (Constant) e;
+ }
object o = c.GetValue ();
prop_values.Add (o);
return null;
}
+ Type type = e.Type;
+ EmptyCast ecast = e as EmptyCast;
+ if ((ecast != null) && (ecast.Child is Constant))
+ e = ecast.Child;
//
// Handle charset here, and set the TypeAttributes
- if (e is Constant){
- Constant c = (Constant) e;;
-
- if (c.Type != fi.FieldType){
- c = Const.ChangeType (Location, (Constant) e, fi.FieldType);
+ Constant c = e as Constant;
+ if (c != null) {
+ if (type != fi.FieldType) {
+ c = Const.ChangeType (Location, c, fi.FieldType);
if (c == null)
return null;
}
field_values.Add (value);
} else if (e is TypeOf) {
field_values.Add (((TypeOf) e).TypeArg);
+ } else if (e is ArrayCreation) {
+ field_values.Add (((ArrayCreation) e).EncodeAsAttribute());
} else {
Error_AttributeArgumentNotValid (Location);
return null;
ec, (MethodGroupExpr) mg, pos_args, false, Location);
if (constructor == null) {
- Error_AttributeConstructorMismatch ();
return null;
}
// class X { static void Main () {} }
//
Report.Warning (
- -23, Location,
- "The compiler can not encode this attribute in .NET due to\n" +
- "\ta bug in the .NET runtime. Try the Mono runtime.\nThe error was: " + e.Message);
+ -23, Location, "The compiler can not encode this attribute in .NET due to a bug in the .NET runtime. Try the Mono runtime. The exception was: " + e.Message);
}
return cb;
/// <summary>
/// Get a string containing a list of valid targets for the attribute 'attr'
/// </summary>
- static string GetValidTargets (Attribute attr)
+ public string GetValidTargets ()
{
StringBuilder sb = new StringBuilder ();
- AttributeTargets targets = attr.GetAttributeUsage ().ValidOn;
+ AttributeTargets targets = GetAttributeUsage ().ValidOn;
if ((targets & AttributeTargets.Assembly) != 0)
sb.Append ("'assembly' ");
}
- public static void Error_AttributeNotValidForElement (Attribute a, Location loc)
- {
- Report.Error (
- 592, loc, "Attribute '" + a.Name +
- "' is not valid on this declaration type. " +
- "It is valid on " + GetValidTargets (a) + "declarations only.");
- }
-
-
/// <summary>
/// Returns AttributeUsage attribute for this type
/// </summary>
return attr_class.AttributeUsage;
}
-
- //
- // This pulls the condition name out of a Conditional attribute
- //
- public string Conditional_GetConditionName ()
+ /// <summary>
+ /// Returns custom name of indexer
+ /// </summary>
+ public string GetIndexerAttributeValue (EmitContext ec)
{
- //
- // So we have a Conditional, pull the data out.
- //
- if (Arguments == null || Arguments [0] == null){
- Error_AttributeConstructorMismatch ();
- return null;
+ if (pos_values == null) {
+ // TODO: It is not neccessary to call whole Resolve (ApplyAttribute does it now) we need only ctor args.
+ // But because a lot of attribute class code must be rewritten will be better to wait...
+ Resolve (ec);
}
+
+ return pos_values [0] as string;
+ }
- ArrayList pos_args = (ArrayList) Arguments [0];
- if (pos_args.Count != 1){
- Error_AttributeConstructorMismatch ();
- return null;
+ /// <summary>
+ /// Returns condition of ConditionalAttribute
+ /// </summary>
+ public string GetConditionalAttributeValue (DeclSpace ds)
+ {
+ if (pos_values == null) {
+ EmitContext ec = new EmitContext (ds, ds, Location, null, null, 0, false);
+
+ // TODO: It is not neccessary to call whole Resolve (ApplyAttribute does it now) we need only ctor args.
+ // But because a lot of attribute class code must be rewritten will be better to wait...
+ Resolve (ec);
}
- Argument arg = (Argument) pos_args [0];
- if (!(arg.Expr is StringConstant)){
- Error_AttributeConstructorMismatch ();
+ // Some error occurred
+ if (pos_values [0] == null)
return null;
- }
- return ((StringConstant) arg.Expr).Value;
+ return (string)pos_values [0];
}
- //
- // This pulls the obsolete message and error flag out of an Obsolete attribute
- //
- public string Obsolete_GetObsoleteMessage (out bool is_error)
+ /// <summary>
+ /// Creates the instance of ObsoleteAttribute from this attribute instance
+ /// </summary>
+ public ObsoleteAttribute GetObsoleteAttribute (DeclSpace ds)
{
- is_error = false;
- //
- // So we have an Obsolete, pull the data out.
- //
- if (Arguments == null || Arguments [0] == null)
- return "";
+ if (pos_values == null) {
+ EmitContext ec = new EmitContext (ds, ds, Location, null, null, 0, false);
- ArrayList pos_args = (ArrayList) Arguments [0];
- if (pos_args.Count == 0)
- return "";
- else if (pos_args.Count > 2){
- Error_AttributeConstructorMismatch ();
- return null;
+ // TODO: It is not neccessary to call whole Resolve (ApplyAttribute does it now) we need only ctor args.
+ // But because a lot of attribute class code must be rewritten will be better to wait...
+ Resolve (ec);
}
- Argument arg = (Argument) pos_args [0];
- if (!(arg.Expr is StringConstant)){
- Error_AttributeConstructorMismatch ();
+ // Some error occurred
+ if (pos_values == null)
return null;
- }
- if (pos_args.Count == 2){
- Argument arg2 = (Argument) pos_args [1];
- if (!(arg2.Expr is BoolConstant)){
- Error_AttributeConstructorMismatch ();
- return null;
- }
- is_error = ((BoolConstant) arg2.Expr).Value;
- }
+ if (pos_values.Length == 0)
+ return new ObsoleteAttribute ();
- return ((StringConstant) arg.Expr).Value;
- }
+ if (pos_values.Length == 1)
+ return new ObsoleteAttribute ((string)pos_values [0]);
- public string IndexerName_GetIndexerName (EmitContext ec)
- {
- if (Arguments == null || Arguments [0] == null){
- Error_AttributeConstructorMismatch ();
- return null;
- }
- ArrayList pos_args = (ArrayList) Arguments [0];
- if (pos_args.Count != 1) {
- Error_AttributeConstructorMismatch ();
- return null;
- }
-
- Argument arg = (Argument) pos_args [0];
- if (!arg.Resolve (ec, Location))
- return null;
-
- StringConstant sc = arg.Expr as StringConstant;
- if (sc == null){
- Error_AttributeConstructorMismatch ();
- return null;
- }
-
- return sc.Value;
+ return new ObsoleteAttribute ((string)pos_values [0], (bool)pos_values [1]);
}
/// <summary>
get { return ImplOptions == MethodImplOptions.InternalCall; }
}
- protected virtual bool CanIgnoreInvalidAttribute (Attributable ias)
- {
- return false;
- }
-
/// <summary>
/// Emit attribute for Attributable symbol
/// </summary>
AttributeUsageAttribute usage_attr = GetAttributeUsage ();
if ((usage_attr.ValidOn & ias.AttributeTargets) == 0) {
- // The parser applies toplevel attributes both to the assembly and
- // to a top-level class, if any. So, be silent about them.
- if (! CanIgnoreInvalidAttribute (ias))
- Error_AttributeNotValidForElement (this, Location);
+ // "Attribute '{0}' is not valid on this declaration type. It is valid on {1} declarations only.";
+ Report.Error_T (592, Location, Name, GetValidTargets ());
return;
}
ias.ApplyAttributeBuilder (this, cb);
- // Because default target is null (we save some space). We need to transform it here
- // for distinction between "default" and "doesn't exist"
- string target = Target == null ? "default" : Target;
- string emitted = emitted_attr [Type] as string;
- if (emitted == target && !usage_attr.AllowMultiple) {
+ if (!usage_attr.AllowMultiple) {
+ ArrayList emitted_targets = (ArrayList)emitted_attr [Type];
+ if (emitted_targets == null) {
+ emitted_targets = new ArrayList ();
+ emitted_attr.Add (Type, emitted_targets);
+ } else if (emitted_targets.Contains (Target)) {
Report.Error (579, Location, "Duplicate '" + Name + "' attribute");
+ return;
+ }
+ emitted_targets.Add (Target);
}
- emitted_attr [Type] = target;
-
// Here we are testing attribute arguments for array usage (error 3016)
if (ias.IsClsCompliaceRequired (ec.DeclSpace)) {
if (Arguments == null)
ec.DeclSpace.NamespaceEntry = ns;
return base.CheckAttributeType (ec, complain);
}
-
- protected override bool CanIgnoreInvalidAttribute (Attributable ias)
- {
- // Ignore error if this attribute is shared between the Assembly
- // and a top-level class. The parser couldn't figure out which entity
- // this attribute belongs to. If this attribute is erroneous, it should
- // be caught when it is processed by the top-level class.
-
- return (Target == null && ias is CommonAssemblyModulClass);
- }
}
public class Attributes {
public void CheckTargets (string[] possible_targets)
{
foreach (Attribute a in Attrs) {
- if (a.Target == null)
+ if (a.Target == null) {
+ a.Target = possible_targets [0];
continue;
+ }
if (((IList) possible_targets).Contains (a.Target))
continue;
return Search (t, ec, true);
}
+ /// <summary>
+ /// Returns all attributes of type 't'. Use it when attribute is AllowMultiple = true
+ /// </summary>
+ public Attribute[] SearchMulti (Type t, EmitContext ec)
+ {
+ ArrayList ar = null;
+
+ foreach (Attribute a in Attrs) {
+ if (a.ResolveType (ec, false) == t) {
+ if (ar == null)
+ ar = new ArrayList ();
+ ar.Add (a);
+ }
+ }
+
+ return ar == null ? null : ar.ToArray (typeof (Attribute)) as Attribute[];
+ }
+
public void Emit (EmitContext ec, Attributable ias)
{
ListDictionary ld = new ListDictionary ();
/// <summary>
/// Pulls the IndexerName attribute from an Indexer if it exists.
/// </summary>
- public string ScanForIndexerName (EmitContext ec)
+ public Attribute GetIndexerNameAttribute (EmitContext ec)
{
- Attribute a = Search (TypeManager.indexer_name_type, ec);
+ Attribute a = Search (TypeManager.indexer_name_type, ec, false);
if (a == null)
return null;
- // Remove the attribute from the list
- //TODO: It is very close to hack and it can crash here
+ // Remove the attribute from the list because it is not emitted
Attrs.Remove (a);
-
- return a.IndexerName_GetIndexerName (ec);
+ return a;
}
}
sealed class AttributeTester
{
static PtrHashtable analyzed_types = new PtrHashtable ();
+ static PtrHashtable analyzed_types_obsolete = new PtrHashtable ();
+ static PtrHashtable analyzed_member_obsolete = new PtrHashtable ();
+ static PtrHashtable analyzed_method_excluded = new PtrHashtable ();
private AttributeTester ()
{
return ((CLSCompliantAttribute)CompliantAttribute[0]).IsCompliant;
}
+
+ /// <summary>
+ /// Returns instance of ObsoleteAttribute when type is obsolete
+ /// </summary>
+ public static ObsoleteAttribute GetObsoleteAttribute (Type type)
+ {
+ object type_obsolete = analyzed_types_obsolete [type];
+ if (type_obsolete == FALSE)
+ return null;
+
+ if (type_obsolete != null)
+ return (ObsoleteAttribute)type_obsolete;
+
+ ObsoleteAttribute result = null;
+ if (type.IsByRef || type.IsArray || type.IsPointer) {
+ result = GetObsoleteAttribute (TypeManager.GetElementType (type));
+ } else if (type.IsGenericParameter || type.IsGenericInstance)
+ return null;
+ else {
+ DeclSpace type_ds = TypeManager.LookupDeclSpace (type);
+
+ // Type is external, we can get attribute directly
+ if (type_ds == null) {
+ object[] attribute = type.GetCustomAttributes (TypeManager.obsolete_attribute_type, false);
+ if (attribute.Length == 1)
+ result = (ObsoleteAttribute)attribute [0];
+ } else {
+ result = type_ds.GetObsoleteAttribute (type_ds);
+ }
+ }
+
+ analyzed_types_obsolete.Add (type, result == null ? FALSE : result);
+ return result;
+ }
+
+ /// <summary>
+ /// Returns instance of ObsoleteAttribute when method is obsolete
+ /// </summary>
+ public static ObsoleteAttribute GetMethodObsoleteAttribute (MethodBase mb)
+ {
+ IMethodData mc = TypeManager.GetMethod (mb);
+ if (mc != null)
+ return mc.GetObsoleteAttribute ();
+
+ return GetMemberObsoleteAttribute (mb);
+ }
+
+ /// <summary>
+ /// Returns instance of ObsoleteAttribute when member is obsolete
+ /// </summary>
+ public static ObsoleteAttribute GetMemberObsoleteAttribute (MemberInfo mi)
+ {
+ object type_obsolete = analyzed_member_obsolete [mi];
+ if (type_obsolete == FALSE)
+ return null;
+
+ if (type_obsolete != null)
+ return (ObsoleteAttribute)type_obsolete;
+
+ if ((mi.DeclaringType is TypeBuilder) || mi.DeclaringType.IsGenericInstance)
+ return null;
+
+ ObsoleteAttribute oa = System.Attribute.GetCustomAttribute (mi, TypeManager.obsolete_attribute_type, false) as ObsoleteAttribute;
+ analyzed_member_obsolete.Add (mi, oa == null ? FALSE : oa);
+ return oa;
+ }
+
+ /// <summary>
+ /// Common method for Obsolete error/warning reporting.
+ /// </summary>
+ public static void Report_ObsoleteMessage (ObsoleteAttribute oa, string member, Location loc)
+ {
+ if (oa.IsError) {
+ Report.Error_T (619, loc, member, oa.Message);
+ return;
+ }
+
+ if (oa.Message == null) {
+ Report.Warning_T (612, loc, member);
+ return;
+ }
+ Report.Warning_T (618, loc, member, oa.Message);
+ }
+
+ public static bool IsConditionalMethodExcluded (MethodBase mb)
+ {
+ object excluded = analyzed_method_excluded [mb];
+ if (excluded != null)
+ return excluded == TRUE ? true : false;
+
+ if (mb.Mono_IsInflatedMethod)
+ return false;
+
+ ConditionalAttribute[] attrs = mb.GetCustomAttributes (TypeManager.conditional_attribute_type, true) as ConditionalAttribute[];
+ if (attrs.Length == 0) {
+ analyzed_method_excluded.Add (mb, FALSE);
+ return false;
+ }
+
+ foreach (ConditionalAttribute a in attrs) {
+ if (RootContext.AllDefines.Contains (a.ConditionString)) {
+ analyzed_method_excluded.Add (mb, FALSE);
+ return false;
+ }
+ }
+ analyzed_method_excluded.Add (mb, TRUE);
+ return true;
+ }
}
}
projects / mono.git / blobdiff