// attribute.cs: Attribute Handler
//
// Author: Ravi Pratap (ravi@ximian.com)
+// Marek Safar (marek.safar@seznam.cz)
//
// Licensed under the terms of the GNU GPL
//
using System;
using System.Diagnostics;
using System.Collections;
+using System.Collections.Specialized;
using System.Reflection;
using System.Reflection.Emit;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
+using System.Security;
+using System.Security.Permissions;
using System.Text;
namespace Mono.CSharp {
+ /// <summary>
+ /// Base class for objects that can have Attributes applied to them.
+ /// </summary>
+ public abstract class Attributable {
+ /// <summary>
+ /// Attributes for this type
+ /// </summary>
+ Attributes attributes;
+
+ public Attributable (Attributes attrs)
+ {
+ attributes = attrs;
+ }
+
+ public Attributes OptAttributes
+ {
+ get {
+ return attributes;
+ }
+ set {
+ attributes = value;
+ }
+ }
+
+ /// <summary>
+ /// Use member-specific procedure to apply attribute @a in @cb to the entity being built in @builder
+ /// </summary>
+ public abstract void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb);
+
+ /// <summary>
+ /// Returns one AttributeTarget for this element.
+ /// </summary>
+ public abstract AttributeTargets AttributeTargets { get; }
+
+ public abstract bool IsClsCompliaceRequired (DeclSpace ds);
+
+ /// <summary>
+ /// Gets list of valid attribute targets for explicit target declaration.
+ /// The first array item is default target. Don't break this rule.
+ /// </summary>
+ public abstract string[] ValidAttributeTargets { get; }
+ };
+
public class Attribute {
+ public readonly string ExplicitTarget;
+ public AttributeTargets Target;
+
public readonly string Name;
public readonly ArrayList Arguments;
- Location Location;
+ public readonly Location Location;
public Type Type;
-
- //
- // The following are only meaningful when the attribute
- // being emitted is an AttributeUsage attribute
- //
- AttributeTargets Targets;
- bool AllowMultiple;
- bool Inherited;
- bool UsageAttr = false;
-
+ bool resolve_error;
+
+ // Is non-null if type is AttributeUsageAttribute
+ AttributeUsageAttribute usage_attribute;
+
+ public AttributeUsageAttribute UsageAttribute {
+ get {
+ return usage_attribute;
+ }
+ }
+
MethodImplOptions ImplOptions;
UnmanagedType UnmanagedType;
CustomAttributeBuilder cb;
FieldInfo [] field_info_arr;
object [] field_values_arr;
object [] prop_values_arr;
+ object [] pos_values;
+
+ static PtrHashtable usage_attr_cache = new PtrHashtable ();
- public Attribute (string name, ArrayList args, Location loc)
+ public Attribute (string target, string name, ArrayList args, Location loc)
{
Name = name;
Arguments = args;
Location = loc;
+ ExplicitTarget = target;
}
void Error_InvalidNamedArgument (string name)
{
- Report.Error (617, Location, "'" + name + "' is not a valid named attribute " +
- "argument. Named attribute arguments must be fields which are not " +
- "readonly, static or const, or properties with a set accessor which "+
- "are not static.");
+ Report.Error (617, Location, "Invalid attribute argument: '{0}'. Argument must be fields " +
+ "fields which are not readonly, static or const; or read-write instance properties.",
+ Name);
}
static void Error_AttributeArgumentNotValid (Location loc)
"expression or array creation expression");
}
- static void Error_AttributeConstructorMismatch (Location loc)
+ /// <summary>
+ /// This is rather hack. We report many emit attribute error with same error to be compatible with
+ /// csc. But because csc has to report them this way because error came from ilasm we needn't.
+ /// </summary>
+ public void Error_AttributeEmitError (string inner)
+ {
+ Report.Error (647, Location, "Error emitting '{0}' attribute because '{1}'", Name, inner);
+ }
+
+ public void Error_InvalidSecurityParent ()
+ {
+ Error_AttributeEmitError ("it is attached to invalid parent");
+ }
+
+ void Error_AttributeConstructorMismatch ()
{
- Report.Error (-6, loc,
+ Report.Error (-6, Location,
"Could not find a constructor for this argument list.");
}
/// <summary>
- /// Tries to resolve the type of the attribute. Flags an error if it can't.
+ /// Tries to resolve the type of the attribute. Flags an error if it can't, and complain is true.
/// </summary>
- private Type CheckAttributeType (EmitContext ec) {
- Type t;
- bool isattributeclass = true;
-
- t = RootContext.LookupType (ec.DeclSpace, Name, true, Location);
- if (t != null) {
- isattributeclass = t.IsSubclassOf (TypeManager.attribute_type);
- if (isattributeclass)
- return t;
+ protected virtual Type CheckAttributeType (EmitContext ec)
+ {
+ string NameAttribute = Name + "Attribute";
+
+ Type t1 = ec.ResolvingTypeTree
+ ? ec.DeclSpace.FindType (Location, Name)
+ : RootContext.LookupType (ec.DeclSpace, Name, true, Location);
+
+ // FIXME: Shouldn't do this for quoted attributes: [@A]
+ Type t2 = ec.ResolvingTypeTree
+ ? ec.DeclSpace.FindType (Location, NameAttribute)
+ : RootContext.LookupType (ec.DeclSpace, NameAttribute, true, Location);
+
+ String err0616 = null;
+
+ if (t1 != null && ! t1.IsSubclassOf (TypeManager.attribute_type)) {
+ t1 = null;
+ err0616 = "'" + Name + "': is not an attribute class";
}
- t = RootContext.LookupType (ec.DeclSpace, Name + "Attribute", true, Location);
- if (t != null) {
- if (t.IsSubclassOf (TypeManager.attribute_type))
- return t;
+ if (t2 != null && ! t2.IsSubclassOf (TypeManager.attribute_type)) {
+ t2 = null;
+ err0616 = (err0616 != null)
+ ? "Neither '" + Name + "' nor '" + NameAttribute +"' is an attribute class"
+ : "'" + Name + "Attribute': is not an attribute class";
}
- if (!isattributeclass) {
- Report.Error (616, Location, "'" + Name + "': is not an attribute class");
+
+ if (t1 != null && t2 != null) {
+ Report.Error(1614, Location, "'" + Name + "': is ambiguous; "
+ + " use either '@" + Name + "' or '" + NameAttribute + "'");
return null;
}
- if (t != null) {
- Report.Error (616, Location, "'" + Name + "Attribute': is not an attribute class");
+ if (t1 != null)
+ return t1;
+ if (t2 != null)
+ return t2;
+
+ if (err0616 != null) {
+ Report.Error (616, Location, err0616);
return null;
}
- Report.Error (
- 246, Location, "Could not find attribute '" + Name + "' (are you" +
- " missing a using directive or an assembly reference ?)");
+
+ Report.Error (246, Location,
+ "Could not find attribute '" + Name
+ + "' (are you missing a using directive or an assembly reference ?)");
+
+ resolve_error = true;
return null;
}
public Type ResolveType (EmitContext ec)
{
- Type = CheckAttributeType (ec);
+ if (Type == null)
+ Type = CheckAttributeType (ec);
return Type;
}
}
}
+ 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.
//
- public static bool GetAttributeArgumentExpression (Expression e, Location loc, out object result)
+ public static bool GetAttributeArgumentExpression (Expression e, Location loc, Type arg_type, out object result)
{
- if (e is Constant) {
- result = ((Constant) e).GetValue ();
+ if (e is EnumConstant) {
+ if (RootContext.StdLib)
+ result = ((EnumConstant)e).GetValueAsEnumType ();
+ else
+ result = ((EnumConstant)e).GetValue ();
+
+ return true;
+ }
+
+ Constant constant = e as Constant;
+ if (constant != null) {
+ if (e.Type != arg_type) {
+ constant = Const.ChangeType (loc, constant, arg_type);
+ if (constant == null) {
+ result = null;
+ Error_AttributeArgumentNotValid (loc);
+ return false;
+ }
+ }
+ result = constant.GetValue ();
return true;
} else if (e is TypeOf) {
result = ((TypeOf) e).TypeArg;
if (result != null)
return true;
} else if (e is EmptyCast) {
- result = e;
- if (((EmptyCast) e).Child is Constant) {
- result = ((Constant) ((EmptyCast)e).Child).GetValue();
- }
- return true;
+ Expression child = ((EmptyCast)e).Child;
+ return GetAttributeArgumentExpression (child, loc, child.Type, out result);
}
result = null;
return false;
}
- public CustomAttributeBuilder Resolve (EmitContext ec)
+ public virtual CustomAttributeBuilder Resolve (EmitContext ec)
{
- if (Type == null)
- Type = CheckAttributeType (ec);
- if (Type == null)
+ if (resolve_error)
+ return null;
+
+ resolve_error = true;
+
+ Type oldType = Type;
+
+ // Sanity check.
+ Type = CheckAttributeType (ec);
+
+ if (oldType == null && Type == null)
+ return null;
+ if (oldType != null && oldType != Type){
+ Report.Error (-27, Location,
+ "Attribute {0} resolved to different types at different times: {1} vs. {2}",
+ Name, oldType, Type);
+ return null;
+ }
+
+ if (Type.IsAbstract) {
+ Report.Error (653, Location, "Cannot apply attribute class '{0}' because it is abstract", Name);
return null;
+ }
bool MethodImplAttr = false;
bool MarshalAsAttr = false;
bool GuidAttr = false;
- UsageAttr = false;
+ bool usage_attr = false;
bool DoCompares = true;
//
if (Type == TypeManager.attribute_usage_type)
- UsageAttr = true;
+ usage_attr = true;
else if (Type == TypeManager.methodimpl_attr_type)
MethodImplAttr = true;
else if (Type == TypeManager.marshal_as_attr_type)
named_args = (ArrayList) Arguments [1];
}
- object [] pos_values = new object [pos_arg_count];
+ pos_values = new object [pos_arg_count];
//
// First process positional arguments
e = a.Expr;
object val;
- if (!GetAttributeArgumentExpression (e, Location, out val))
+ if (!GetAttributeArgumentExpression (e, Location, a.Type, out val))
return null;
-
+
pos_values [i] = val;
+
if (DoCompares){
- if (UsageAttr)
- this.Targets = (AttributeTargets) pos_values [0];
- else if (MethodImplAttr)
- this.ImplOptions = (MethodImplOptions) pos_values [0];
- else if (GuidAttr){
+ if (usage_attr) {
+ if ((int)val == 0) {
+ Report.Error (591, Location, "Invalid value for argument to 'System.AttributeUsage' attribute");
+ return null;
+ }
+ usage_attribute = new AttributeUsageAttribute ((AttributeTargets)val);
+ } else if (MethodImplAttr) {
+ this.ImplOptions = (MethodImplOptions) val;
+ } else if (GuidAttr){
//
// we will later check the validity of the type
//
- if (pos_values [0] is string){
- if (!ValidateGuid ((string) pos_values [0]))
+ if (val is string){
+ if (!ValidateGuid ((string) val))
return null;
}
} else if (MarshalAsAttr)
this.UnmanagedType =
- (System.Runtime.InteropServices.UnmanagedType) pos_values [0];
+ (System.Runtime.InteropServices.UnmanagedType) val;
}
}
field_values = new ArrayList ();
prop_values = new ArrayList ();
}
+
+ Hashtable seen_names = new Hashtable();
for (i = 0; i < named_args.Count; i++) {
DictionaryEntry de = (DictionaryEntry) named_args [i];
string member_name = (string) de.Key;
Argument a = (Argument) de.Value;
Expression e;
+
+ if (seen_names.Contains(member_name)) {
+ Report.Error(643, Location, "'" + member_name + "' duplicate named attribute argument");
+ return null;
+ }
+ seen_names.Add(member_name, 1);
if (!a.Resolve (ec, Location))
return null;
BindingFlags.Public | BindingFlags.Instance,
Location);
- if (member == null || !(member is PropertyExpr || member is FieldExpr)) {
+ if (member == null) {
+ member = Expression.MemberLookup (ec, Type, member_name,
+ MemberTypes.Field | MemberTypes.Property, BindingFlags.NonPublic | BindingFlags.Instance,
+ Location);
+
+ if (member != null) {
+ Report.Error (122, Location, "'{0}' is inaccessible due to its protection level", GetFullMemberName (member_name));
+ return null;
+ }
+ }
+
+ if (member == null){
+ Report.Error (117, Location, "Attribute `{0}' does not contain a definition for `{1}'",
+ Type, member_name);
+ return null;
+ }
+
+ if (!(member is PropertyExpr || member is FieldExpr)) {
Error_InvalidNamedArgument (member_name);
return null;
}
PropertyExpr pe = (PropertyExpr) member;
PropertyInfo pi = pe.PropertyInfo;
- if (!pi.CanWrite) {
+ if (!pi.CanWrite || !pi.CanRead) {
+ Report.SymbolRelatedToPreviousError (pi);
Error_InvalidNamedArgument (member_name);
return null;
}
- if (e is Constant) {
- object o = ((Constant) e).GetValue ();
- prop_values.Add (o);
-
- if (UsageAttr) {
- if (member_name == "AllowMultiple")
- this.AllowMultiple = (bool) o;
- if (member_name == "Inherited")
- this.Inherited = (bool) o;
- }
-
- } else if (e is TypeOf) {
- prop_values.Add (((TypeOf) e).TypeArg);
- } else if (e is ArrayCreation) {
- prop_values.Add (((ArrayCreation) e).EncodeAsAttribute());
- } else {
- Error_AttributeArgumentNotValid (Location);
+ object value;
+ if (!GetAttributeArgumentExpression (e, Location, pi.PropertyType, out value))
return null;
+
+ if (usage_attribute != null) {
+ if (member_name == "AllowMultiple")
+ usage_attribute.AllowMultiple = (bool) value;
+ if (member_name == "Inherited")
+ usage_attribute.Inherited = (bool) value;
}
-
+
+ prop_values.Add (value);
prop_infos.Add (pi);
} else if (member is FieldExpr) {
return null;
}
- //
- // Handle charset here, and set the TypeAttributes
-
- if (e is Constant){
- object value = ((Constant) e).GetValue ();
-
- field_values.Add (value);
- } else if (e is TypeOf) {
- field_values.Add (((TypeOf) e).TypeArg);
- } else {
- Error_AttributeArgumentNotValid (Location);
- return null;
- }
-
+ object value;
+ if (!GetAttributeArgumentExpression (e, Location, fi.FieldType, out value))
+ return null;
+
+ field_values.Add (value);
field_infos.Add (fi);
}
}
Location);
if (mg == null) {
- Error_AttributeConstructorMismatch (Location);
+ Error_AttributeConstructorMismatch ();
return null;
}
MethodBase constructor = Invocation.OverloadResolve (
- ec, (MethodGroupExpr) mg, pos_args, Location);
+ ec, (MethodGroupExpr) mg, pos_args, false, Location);
if (constructor == null) {
- Error_AttributeConstructorMismatch (Location);
return null;
}
ParameterData pd = Invocation.GetParameterData (constructor);
- int group_in_params_array = Int32.MaxValue;
- int pc = pd.Count;
- if (pc > 0 && pd.ParameterModifier (pc-1) == Parameter.Modifier.PARAMS)
- group_in_params_array = pc-1;
-
+ int last_real_param = pd.Count;
+ if (pd.HasParams) {
+ // When the params is not filled we need to put one
+ if (last_real_param > pos_arg_count) {
+ object [] new_pos_values = new object [pos_arg_count + 1];
+ pos_values.CopyTo (new_pos_values, 0);
+ new_pos_values [pos_arg_count] = new object [] {} ;
+ pos_values = new_pos_values;
+ }
+ last_real_param--;
+ }
+
for (int j = 0; j < pos_arg_count; ++j) {
Argument a = (Argument) pos_args [j];
return null;
}
- if (j < group_in_params_array)
+ if (j < last_real_param)
continue;
- if (j == group_in_params_array){
- object v = pos_values [j];
- int count = pos_arg_count - j;
-
- object [] array = new object [count];
+ if (j == last_real_param) {
+ object [] array = new object [pos_arg_count - last_real_param];
+ array [0] = pos_values [j];
pos_values [j] = array;
- array [0] = v;
- } else {
- object [] array = (object []) pos_values [group_in_params_array];
-
- array [j - group_in_params_array] = pos_values [j];
+ continue;
}
+
+ object [] params_array = (object []) pos_values [last_real_param];
+ params_array [j - last_real_param] = pos_values [j];
}
- //
// Adjust the size of the pos_values if it had params
- //
- if (group_in_params_array != Int32.MaxValue){
- int argc = group_in_params_array+1;
- object [] new_pos_values = new object [argc];
-
- for (int p = 0; p < argc; p++)
- new_pos_values [p] = pos_values [p];
+ if (last_real_param != pos_arg_count) {
+ object [] new_pos_values = new object [last_real_param + 1];
+ Array.Copy (pos_values, new_pos_values, last_real_param + 1);
pos_values = new_pos_values;
}
else
cb = new CustomAttributeBuilder (
(ConstructorInfo) constructor, pos_values);
- } catch (NullReferenceException) {
- //
- // Don't know what to do here
- //
- Report.Warning (
- -101, Location, "NullReferenceException while trying to create attribute." +
- "Something's wrong!");
} catch (Exception e) {
//
// Sample:
// [DefaultValue (CollectionChangeAction.Add)]
// 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);
+ Error_AttributeArgumentNotValid (Location);
+ return null;
}
+ resolve_error = false;
return cb;
}
- /// <summary>
- /// Get a string containing a list of valid targets for the attribute 'attr'
- /// </summary>
- static string GetValidTargets (Attribute attr)
+ /// <summary>
+ /// Get a string containing a list of valid targets for the attribute 'attr'
+ /// </summary>
+ public string GetValidTargets ()
{
StringBuilder sb = new StringBuilder ();
- AttributeTargets targets = 0;
-
- TypeContainer a = TypeManager.LookupAttr (attr.Type);
-
- if (a == null) {
-
- System.Attribute [] attrs = null;
-
- try {
- attrs = System.Attribute.GetCustomAttributes (attr.Type);
-
- } catch {
- Report.Error (-20, attr.Location, "Cannot find attribute type " + attr.Name +
- " (maybe you forgot to set the usage using the" +
- " AttributeUsage attribute ?).");
- return null;
- }
-
- foreach (System.Attribute tmp in attrs)
- if (tmp is AttributeUsageAttribute) {
- targets = ((AttributeUsageAttribute) tmp).ValidOn;
- break;
- }
- } else
- targets = a.Targets;
+ AttributeTargets targets = GetAttributeUsage ().ValidOn;
-
if ((targets & AttributeTargets.Assembly) != 0)
sb.Append ("'assembly' ");
sb.Append ("'property' ");
if ((targets & AttributeTargets.ReturnValue) != 0)
- sb.Append ("'return value' ");
+ sb.Append ("'return' ");
if ((targets & AttributeTargets.Struct) != 0)
sb.Append ("'struct' ");
}
- public static void Error_AttributeNotValidForElement (Attribute a, Location loc)
+ /// <summary>
+ /// Returns AttributeUsage attribute for this type
+ /// </summary>
+ public AttributeUsageAttribute GetAttributeUsage ()
{
- Report.Error (
- 592, loc, "Attribute '" + a.Name +
- "' is not valid on this declaration type. " +
- "It is valid on " + GetValidTargets (a) + "declarations only.");
+ AttributeUsageAttribute ua = usage_attr_cache [Type] as AttributeUsageAttribute;
+ if (ua != null)
+ return ua;
+
+ Class attr_class = TypeManager.LookupClass (Type);
+
+ if (attr_class == null) {
+ object[] usage_attr = Type.GetCustomAttributes (TypeManager.attribute_usage_type, true);
+ ua = (AttributeUsageAttribute)usage_attr [0];
+ usage_attr_cache.Add (Type, ua);
+ return ua;
+ }
+
+ return attr_class.AttributeUsage;
}
- /// <summary>
- /// Ensure that Attribute 'a' is being applied to the right language element (target)
- /// </summary>
- public static bool CheckAttributeTarget (Attribute a, object element)
+ /// <summary>
+ /// Returns custom name of indexer
+ /// </summary>
+ public string GetIndexerAttributeValue (EmitContext ec)
{
- TypeContainer attr = TypeManager.LookupAttr (a.Type);
- AttributeTargets targets = 0;
-
- if (attr == null) {
- System.Attribute [] attrs = null;
-
- try {
- attrs = System.Attribute.GetCustomAttributes (a.Type);
+ 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);
- } catch {
- Report.Error (-20, a.Location, "Cannot find attribute type " + a.Name +
- " (maybe you forgot to set the usage using the" +
- " AttributeUsage attribute ?).");
- return false;
- }
-
- foreach (System.Attribute tmp in attrs)
- if (tmp is AttributeUsageAttribute) {
- targets = ((AttributeUsageAttribute) tmp).ValidOn;
- break;
- }
- } else
- targets = attr.Targets;
+ return pos_values [0] as string;
+ }
+ /// <summary>
+ /// Returns condition of ConditionalAttribute
+ /// </summary>
+ public string GetConditionalAttributeValue (EmitContext ec)
+ {
+ 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);
- if (element is Class) {
- if ((targets & AttributeTargets.Class) != 0)
- return true;
- else
- return false;
-
- } else if (element is Struct) {
- if ((targets & AttributeTargets.Struct) != 0)
- return true;
- else
- return false;
- } else if (element is Constructor) {
- if ((targets & AttributeTargets.Constructor) != 0)
- return true;
- else
- return false;
- } else if (element is Delegate) {
- if ((targets & AttributeTargets.Delegate) != 0)
- return true;
- else
- return false;
- } else if (element is Enum) {
- if ((targets & AttributeTargets.Enum) != 0)
- return true;
- else
- return false;
- } else if (element is Event) {
- if ((targets & AttributeTargets.Event) != 0)
- return true;
- else
- return false;
- } else if (element is Field || element is FieldBuilder) {
- if ((targets & AttributeTargets.Field) != 0)
- return true;
- else
- return false;
- } else if (element is Interface) {
- if ((targets & AttributeTargets.Interface) != 0)
- return true;
- else
- return false;
- } else if (element is Method || element is Operator ||
- element is Accessor) {
- if ((targets & AttributeTargets.Method) != 0)
- return true;
- else
- return false;
- } else if (element is ParameterBuilder) {
- if ((targets & AttributeTargets.Parameter) != 0 ||
- (targets & AttributeTargets.ReturnValue) != 0)
- return true;
- else
- return false;
- } else if (element is Property || element is Indexer ||
- element is Accessor) {
- if ((targets & AttributeTargets.Property) != 0)
- return true;
- else
- return false;
- } else if (element is AssemblyClass){
- if ((targets & AttributeTargets.Assembly) != 0)
- return true;
- else
- return false;
- } else if (element is ModuleClass){
- if ((targets & AttributeTargets.Module) != 0)
- return true;
- else
- return false;
- }
+ // Some error occurred
+ if (pos_values [0] == null)
+ return null;
- return false;
+ return (string)pos_values [0];
}
- //
- // This method should be invoked to pull the IndexerName attribute from an
- // Indexer if it exists.
- //
- public static string ScanForIndexerName (EmitContext ec, Attributes opt_attrs)
+ /// <summary>
+ /// Creates the instance of ObsoleteAttribute from this attribute instance
+ /// </summary>
+ public ObsoleteAttribute GetObsoleteAttribute (EmitContext ec)
{
- if (opt_attrs == null)
- return null;
- if (opt_attrs.AttributeSections == null)
- 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);
- foreach (AttributeSection asec in opt_attrs.AttributeSections) {
- if (asec.Attributes == null)
- continue;
+ // Some error occurred
+ if (pos_values == null)
+ return null;
- foreach (Attribute a in asec.Attributes){
- if (a.ResolveType (ec) == null)
- return null;
-
- if (a.Type != TypeManager.indexer_name_type)
- continue;
-
- //
- // So we have found an IndexerName, pull the data out.
- //
- if (a.Arguments == null || a.Arguments [0] == null){
- Error_AttributeConstructorMismatch (a.Location);
- return null;
- }
- ArrayList pos_args = (ArrayList) a.Arguments [0];
- if (pos_args.Count == 0){
- Error_AttributeConstructorMismatch (a.Location);
- return null;
- }
-
- Argument arg = (Argument) pos_args [0];
- if (!arg.Resolve (ec, a.Location))
- return null;
-
- Expression e = arg.Expr;
- if (!(e is StringConstant)){
- Error_AttributeConstructorMismatch (a.Location);
- return null;
- }
+ if (pos_values.Length == 0)
+ return new ObsoleteAttribute ();
- //
- // Remove the attribute from the list
- //
- asec.Attributes.Remove (a);
+ if (pos_values.Length == 1)
+ return new ObsoleteAttribute ((string)pos_values [0]);
- return (((StringConstant) e).Value);
- }
- }
- return null;
+ return new ObsoleteAttribute ((string)pos_values [0], (bool)pos_values [1]);
}
- //
- // This pulls the condition name out of a Conditional attribute
- //
- public string Conditional_GetConditionName ()
+ /// <summary>
+ /// Returns value of CLSCompliantAttribute contructor parameter but because the method can be called
+ /// before ApplyAttribute. We need to resolve the arguments.
+ /// This situation occurs when class deps is differs from Emit order.
+ /// </summary>
+ public bool GetClsCompliantAttributeValue (EmitContext ec)
{
- //
- // So we have a Conditional, pull the data out.
- //
- if (Arguments == null || Arguments [0] == null){
- Error_AttributeConstructorMismatch (Location);
- return null;
- }
-
- ArrayList pos_args = (ArrayList) Arguments [0];
- if (pos_args.Count != 1){
- Error_AttributeConstructorMismatch (Location);
- 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);
- Argument arg = (Argument) pos_args [0];
- if (!(arg.Expr is StringConstant)){
- Error_AttributeConstructorMismatch (Location);
- return null;
- }
+ // Some error occurred
+ if (pos_values [0] == null)
+ return false;
- return ((StringConstant) arg.Expr).Value;
+ return (bool)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>
+ /// Tests permitted SecurityAction for assembly or other types
+ /// </summary>
+ public bool CheckSecurityActionValidity (bool for_assembly)
{
- is_error = false;
- //
- // So we have an Obsolete, pull the data out.
- //
- if (Arguments == null || Arguments [0] == null)
- return "";
+ SecurityAction action = GetSecurityActionValue ();
- ArrayList pos_args = (ArrayList) Arguments [0];
- if (pos_args.Count == 0)
- return "";
- else if (pos_args.Count > 2){
- Error_AttributeConstructorMismatch (Location);
- return null;
- }
-
- Argument arg = (Argument) pos_args [0];
- if (!(arg.Expr is StringConstant)){
- Error_AttributeConstructorMismatch (Location);
- return null;
- }
+ if ((action == SecurityAction.RequestMinimum || action == SecurityAction.RequestOptional || action == SecurityAction.RequestRefuse) && for_assembly)
+ return true;
- if (pos_args.Count == 2){
- Argument arg2 = (Argument) pos_args [1];
- if (!(arg2.Expr is BoolConstant)){
- Error_AttributeConstructorMismatch (Location);
- return null;
+ if (!for_assembly) {
+ if (action < SecurityAction.Demand || action > SecurityAction.InheritanceDemand) {
+ Error_AttributeEmitError ("SecurityAction is out of range");
+ return false;
}
- is_error = ((BoolConstant) arg2.Expr).Value;
+
+ if ((action != SecurityAction.RequestMinimum && action != SecurityAction.RequestOptional && action != SecurityAction.RequestRefuse) && !for_assembly)
+ return true;
}
- return ((StringConstant) arg.Expr).Value;
+ Error_AttributeEmitError (String.Concat ("SecurityAction '", action, "' is not valid for this declaration"));
+ return false;
}
- static object GetFieldValue (Attribute a, string name)
- {
- int i;
- if (a.field_info_arr == null)
- return null;
- i = 0;
- foreach (FieldInfo fi in a.field_info_arr) {
+ System.Security.Permissions.SecurityAction GetSecurityActionValue ()
+ {
+ return (SecurityAction)pos_values [0];
+ }
+
+ /// <summary>
+ /// Creates instance of SecurityAttribute class and add result of CreatePermission method to permission table.
+ /// </summary>
+ /// <returns></returns>
+ public void ExtractSecurityPermissionSet (ListDictionary permissions)
+ {
+ if (TypeManager.LookupDeclSpace (Type) != null && RootContext.StdLib) {
+ Error_AttributeEmitError ("security custom attributes can not be referenced from defining assembly");
+ return;
+ }
+
+ SecurityAttribute sa;
+ // For all assemblies except corlib we can avoid all hacks
+ if (RootContext.StdLib) {
+ sa = (SecurityAttribute) Activator.CreateInstance (Type, pos_values);
+
+ if (prop_info_arr != null) {
+ for (int i = 0; i < prop_info_arr.Length; ++i) {
+ PropertyInfo pi = prop_info_arr [i];
+ pi.SetValue (sa, prop_values_arr [i], null);
+ }
+ }
+ } else {
+ Type temp_type = Type.GetType (Type.FullName);
+ // HACK: All mscorlib attributes have same ctor syntax
+ sa = (SecurityAttribute) Activator.CreateInstance (temp_type, new object[] { GetSecurityActionValue () } );
+
+ // All types are from newly created corlib but for invocation with old we need to convert them
+ if (prop_info_arr != null) {
+ for (int i = 0; i < prop_info_arr.Length; ++i) {
+ PropertyInfo emited_pi = prop_info_arr [i];
+ PropertyInfo pi = temp_type.GetProperty (emited_pi.Name, emited_pi.PropertyType);
+
+ object old_instance = pi.PropertyType.IsEnum ?
+ System.Enum.ToObject (pi.PropertyType, prop_values_arr [i]) :
+ prop_values_arr [i];
+
+ pi.SetValue (sa, old_instance, null);
+ }
+ }
+ }
+
+ IPermission perm = sa.CreatePermission ();
+ SecurityAction action;
+
+ // IS is correct because for corlib we are using an instance from old corlib
+ if (perm is System.Security.CodeAccessPermission) {
+ action = GetSecurityActionValue ();
+ } else {
+ switch (GetSecurityActionValue ()) {
+ case SecurityAction.Demand:
+ action = (SecurityAction)13;
+ break;
+ case SecurityAction.LinkDemand:
+ action = (SecurityAction)14;
+ break;
+ case SecurityAction.InheritanceDemand:
+ action = (SecurityAction)15;
+ break;
+ default:
+ Error_AttributeEmitError ("Invalid SecurityAction for non-Code Access Security permission");
+ return;
+ }
+ }
+
+ PermissionSet ps = (PermissionSet)permissions [action];
+ if (ps == null) {
+ ps = new PermissionSet (PermissionState.None);
+ permissions.Add (action, ps);
+ }
+ ps.AddPermission (sa.CreatePermission ());
+ }
+
+ object GetValue (object value)
+ {
+ if (value is EnumConstant)
+ return ((EnumConstant) value).GetValue ();
+ else
+ return value;
+ }
+
+ public object GetPositionalValue (int i)
+ {
+ return (pos_values == null) ? null : pos_values[i];
+ }
+
+ object GetFieldValue (string name)
+ {
+ int i;
+ if (field_info_arr == null)
+ return null;
+ i = 0;
+ foreach (FieldInfo fi in field_info_arr) {
if (fi.Name == name)
- return a.field_values_arr [i];
+ return GetValue (field_values_arr [i]);
i++;
}
return null;
}
- static UnmanagedMarshal GetMarshal (Attribute a)
+ public UnmanagedMarshal GetMarshal (Attributable attr)
{
- object o = GetFieldValue (a, "ArraySubType");
+ object value = GetFieldValue ("SizeParamIndex");
+ if (value != null && UnmanagedType != UnmanagedType.LPArray) {
+ Error_AttributeEmitError ("SizeParamIndex field is not valid for the specified unmanaged type");
+ return null;
+ }
+
+ object o = GetFieldValue ("ArraySubType");
UnmanagedType array_sub_type = o == null ? UnmanagedType.I4 : (UnmanagedType) o;
- switch (a.UnmanagedType) {
+ switch (UnmanagedType) {
case UnmanagedType.CustomMarshaler:
MethodInfo define_custom = typeof (UnmanagedMarshal).GetMethod ("DefineCustom",
BindingFlags.Static | BindingFlags.Public);
- if (define_custom == null)
+ if (define_custom == null) {
+ Report.RuntimeMissingSupport (Location, "set marshal info");
return null;
+ }
object [] args = new object [4];
- args [0] = GetFieldValue (a, "MarshalTypeRef");
- args [1] = GetFieldValue (a, "MarshalCookie");
- args [2] = GetFieldValue (a, "MarshalType");
+ args [0] = GetFieldValue ("MarshalTypeRef");
+ args [1] = GetFieldValue ("MarshalCookie");
+ args [2] = GetFieldValue ("MarshalType");
args [3] = Guid.Empty;
return (UnmanagedMarshal) define_custom.Invoke (null, args);
return UnmanagedMarshal.DefineSafeArray (array_sub_type);
case UnmanagedType.ByValArray:
- return UnmanagedMarshal.DefineByValArray ((int) GetFieldValue (a, "SizeConst"));
+ FieldMember fm = attr as FieldMember;
+ if (fm == null) {
+ Error_AttributeEmitError ("Specified unmanaged type is only valid on fields");
+ return null;
+ }
+ return UnmanagedMarshal.DefineByValArray ((int) GetFieldValue ("SizeConst"));
case UnmanagedType.ByValTStr:
- return UnmanagedMarshal.DefineByValTStr ((int) GetFieldValue (a, "SizeConst"));
+ return UnmanagedMarshal.DefineByValTStr ((int) GetFieldValue ("SizeConst"));
default:
- return UnmanagedMarshal.DefineUnmanagedMarshal (a.UnmanagedType);
+ return UnmanagedMarshal.DefineUnmanagedMarshal (UnmanagedType);
}
}
+ public bool IsInternalCall
+ {
+ get { return ImplOptions == MethodImplOptions.InternalCall; }
+ }
+
/// <summary>
- /// Applies the attributes specified on target 'kind' to the `builder'.
+ /// Emit attribute for Attributable symbol
/// </summary>
- public static void ApplyAttributes (EmitContext ec, object builder, object kind,
- Attributes opt_attrs)
+ public void Emit (EmitContext ec, Attributable ias, ListDictionary emitted_attr)
{
- Type attr_type = null;
-
- if (opt_attrs == null)
+ CustomAttributeBuilder cb = Resolve (ec);
+ if (cb == null)
return;
- if (opt_attrs.AttributeSections == null)
- return;
-
- ArrayList emitted_attrs = new ArrayList ();
- ArrayList emitted_targets = new ArrayList ();
-
- foreach (AttributeSection asec in opt_attrs.AttributeSections) {
- string attr_target = asec.Target;
-
- if (asec.Attributes == null)
- continue;
-
- if (attr_target == "return" && !(builder is ParameterBuilder))
- continue;
-
- foreach (Attribute a in asec.Attributes) {
- Location loc = a.Location;
- CustomAttributeBuilder cb = a.Resolve (ec);
- attr_type = a.Type;
- if (cb == null)
- continue;
-
- if (!(kind is TypeContainer))
- if (!CheckAttributeTarget (a, kind)) {
- Error_AttributeNotValidForElement (a, loc);
- return;
- }
+ AttributeUsageAttribute usage_attr = GetAttributeUsage ();
+ if ((usage_attr.ValidOn & Target) == 0) {
+ Report.Error (592, Location, "Attribute '{0}' is not valid on this declaration type. It is valid on {1} declarations only.", Name, GetValidTargets ());
+ return;
+ }
- //
- // Perform the check for duplicate attributes
- //
- if (emitted_attrs.Contains (attr_type) &&
- emitted_targets.Contains (attr_target) &&
- !TypeManager.AreMultipleAllowed (attr_type)) {
- Report.Error (579, loc, "Duplicate '" + a.Name + "' attribute");
- return;
- }
+ ias.ApplyAttributeBuilder (this, cb);
- if (kind is IAttributeSupport) {
- if (attr_type == TypeManager.methodimpl_attr_type && a.ImplOptions == MethodImplOptions.InternalCall) {
- ((MethodBuilder) builder).SetImplementationFlags (MethodImplAttributes.InternalCall | MethodImplAttributes.Runtime);
- }
- else {
- IAttributeSupport attributeSupport = kind as IAttributeSupport;
- attributeSupport.SetCustomAttribute (cb);
- }
- }
- else if (kind is Method || kind is Operator || kind is Accessor) {
- if (attr_type == TypeManager.methodimpl_attr_type) {
- if (a.ImplOptions == MethodImplOptions.InternalCall)
- ((MethodBuilder) builder).
- SetImplementationFlags (
- MethodImplAttributes.InternalCall |
- MethodImplAttributes.Runtime);
- else
- ((MethodBuilder) builder).SetCustomAttribute (cb);
- } else if (attr_type != TypeManager.dllimport_type){
- ((MethodBuilder) builder).SetCustomAttribute (cb);
- }
- } else if (kind is Constructor) {
- ((ConstructorBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is Field) {
- if (attr_type == TypeManager.marshal_as_attr_type) {
- UnmanagedMarshal marshal = GetMarshal (a);
- if (marshal == null) {
- Report.Warning (-24, loc,
- "The Microsoft Runtime cannot set this marshal info. " +
- "Please use the Mono runtime instead.");
- } else {
- ((FieldBuilder) builder).SetMarshal (marshal);
- }
- } else {
- ((FieldBuilder) builder).SetCustomAttribute (cb);
- }
- } else if (kind is Property || kind is Indexer) {
-
- if (builder is PropertyBuilder)
- ((PropertyBuilder) builder).SetCustomAttribute (cb);
- //
- // This is for the case we are setting attributes on
- // the get and set accessors
- //
- else if (builder is MethodBuilder)
- ((MethodBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is Event) {
- ((MyEventBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is ParameterBuilder) {
-
- if (attr_type == TypeManager.marshal_as_attr_type) {
- UnmanagedMarshal marshal = GetMarshal (a);
- if (marshal == null) {
- Report.Warning (-24, loc,
- "The Microsoft Runtime cannot set this marshal info. " +
- "Please use the Mono runtime instead.");
- } else {
- ((ParameterBuilder) builder).SetMarshal (marshal);
- }
- } else {
-
- try {
- ((ParameterBuilder) builder).SetCustomAttribute (cb);
- } catch (System.ArgumentException) {
- Report.Warning (-24, loc,
- "The Microsoft Runtime cannot set attributes \n" +
- "on the return type of a method. Please use the \n" +
- "Mono runtime instead.");
- }
+ 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);
+ }
- }
- } else if (kind is Enum) {
- ((TypeBuilder) builder).SetCustomAttribute (cb);
+ if (!RootContext.VerifyClsCompliance)
+ return;
- } else if (kind is TypeContainer) {
- TypeContainer tc = (TypeContainer) kind;
-
- if (a.UsageAttr) {
- tc.Targets = a.Targets;
- tc.AllowMultiple = a.AllowMultiple;
- tc.Inherited = a.Inherited;
-
- TypeManager.RegisterAttributeAllowMultiple (tc.TypeBuilder,
- tc.AllowMultiple);
-
- } else if (attr_type == TypeManager.default_member_type) {
- if (tc.Indexers != null) {
- Report.Error (646, loc,
- "Cannot specify the DefaultMember attribute on" +
- " a type containing an indexer");
- return;
- }
-
- } else {
- if (!CheckAttributeTarget (a, kind)) {
- Error_AttributeNotValidForElement (a, loc);
- return;
- }
- }
+ // Here we are testing attribute arguments for array usage (error 3016)
+ if (ias.IsClsCompliaceRequired (ec.DeclSpace)) {
+ if (Arguments == null)
+ return;
- try {
- ((TypeBuilder) builder).SetCustomAttribute (cb);
- } catch (System.ArgumentException) {
- Report.Warning (
- -21, loc,
- "The CharSet named property on StructLayout\n"+
- "\tdoes not work correctly on Microsoft.NET\n"+
- "\tYou might want to remove the CharSet declaration\n"+
- "\tor compile using the Mono runtime instead of the\n"+
- "\tMicrosoft .NET runtime");
- }
- } else if (kind is Delegate){
- if (!CheckAttributeTarget (a, kind)) {
- Error_AttributeNotValidForElement (a, loc);
+ ArrayList pos_args = (ArrayList) Arguments [0];
+ if (pos_args != null) {
+ foreach (Argument arg in pos_args) {
+ // Type is undefined (was error 246)
+ if (arg.Type == null)
return;
- }
- try {
- ((TypeBuilder) builder).SetCustomAttribute (cb);
- } catch (System.ArgumentException) {
- Report.Warning (
- -21, loc,
- "The CharSet named property on StructLayout\n"+
- "\tdoes not work correctly on Microsoft.NET\n"+
- "\tYou might want to remove the CharSet declaration\n"+
- "\tor compile using the Mono runtime instead of the\n"+
- "\tMicrosoft .NET runtime");
- }
- } else if (kind is Interface) {
- Interface iface = (Interface) kind;
-
- if ((attr_type == TypeManager.default_member_type) &&
- (iface.Indexers != null)) {
- Report.Error (
- 646, loc,
- "Cannot specify the DefaultMember attribute on" +
- " a type containing an indexer");
- return;
- }
- if (!CheckAttributeTarget (a, kind)) {
- Error_AttributeNotValidForElement (a, loc);
+ if (arg.Type.IsArray) {
+ Report.Error (3016, Location, "Arrays as attribute arguments are not CLS-compliant");
return;
}
+ }
+ }
+
+ if (Arguments.Count < 2)
+ return;
+
+ ArrayList named_args = (ArrayList) Arguments [1];
+ foreach (DictionaryEntry de in named_args) {
+ Argument arg = (Argument) de.Value;
- ((TypeBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is AssemblyBuilder){
- ((AssemblyBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is ModuleBuilder) {
- ((ModuleBuilder) builder).SetCustomAttribute (cb);
- } else if (kind is FieldBuilder) {
- if (attr_type == TypeManager.marshal_as_attr_type) {
- UnmanagedMarshal marshal = GetMarshal (a);
- if (marshal == null) {
- Report.Warning (-24, loc,
- "The Microsoft Runtime cannot set this marshal info. " +
- "Please use the Mono runtime instead.");
- } else {
- ((ParameterBuilder) builder).SetMarshal (marshal);
- }
- } else {
- ((FieldBuilder) builder).SetCustomAttribute (cb);
- }
- } else
- throw new Exception ("Unknown kind: " + kind);
-
- //
- // Once an attribute type has been emitted once we
- // keep track of the info to prevent multiple occurences
- // for attributes which do not explicitly allow it
- //
- if (!emitted_attrs.Contains (attr_type))
- emitted_attrs.Add (attr_type);
-
- //
- // We keep of this target-wise and so emitted targets
- // are tracked too
- //
- if (!emitted_targets.Contains (attr_target))
- emitted_targets.Add (attr_target);
+ // Type is undefined (was error 246)
+ if (arg.Type == null)
+ return;
+
+ if (arg.Type.IsArray) {
+ Report.Error (3016, Location, "Arrays as attribute arguments are not CLS-compliant");
+ return;
+ }
}
-
-
}
}
+ public object GetValue (EmitContext ec, Constant c, Type target)
+ {
+ if (Convert.ImplicitConversionExists (ec, c, target))
+ return c.GetValue ();
+
+ Convert.Error_CannotImplicitConversion (Location, c.Type, target);
+ return null;
+ }
+
public MethodBuilder DefinePInvokeMethod (EmitContext ec, TypeBuilder builder, string name,
MethodAttributes flags, Type ret_type, Type [] param_types)
{
return null;
}
- Type = CheckAttributeType (ec);
+ ResolveType (ec);
if (Type == null)
return null;
if (a.Expr is Constant) {
Constant c = (Constant) a.Expr;
-
- if (member_name == "CallingConvention")
- cc = (CallingConvention) c.GetValue ();
- else if (member_name == "CharSet")
- charset = (CharSet) c.GetValue ();
- else if (member_name == "EntryPoint")
- entry_point = (string) c.GetValue ();
- else if (member_name == "SetLastError")
- set_last_err = (bool) c.GetValue ();
+
+ try {
+ if (member_name == "CallingConvention"){
+ object val = GetValue (ec, c, typeof (CallingConvention));
+ if (val == null)
+ return null;
+ cc = (CallingConvention) val;
+ } else if (member_name == "CharSet"){
+ charset = (CharSet) c.GetValue ();
+ } else if (member_name == "EntryPoint")
+ entry_point = (string) c.GetValue ();
+ else if (member_name == "SetLastError")
+ set_last_err = (bool) c.GetValue ();
#if FIXME
- else if (member_name == "ExactSpelling")
- exact_spelling = (bool) c.GetValue ();
+ else if (member_name == "ExactSpelling")
+ exact_spelling = (bool) c.GetValue ();
#endif
- else if (member_name == "PreserveSig")
- preserve_sig = (bool) c.GetValue ();
+ else if (member_name == "PreserveSig")
+ preserve_sig = (bool) c.GetValue ();
+ } catch (InvalidCastException){
+ Error_InvalidNamedArgument (member_name);
+ Error_AttributeArgumentNotValid (Location);
+ }
} else {
Error_AttributeArgumentNotValid (Location);
return null;
}
}
- public class AttributeSection {
- public readonly string Target;
- public readonly ArrayList Attributes;
-
- public AttributeSection (string target, ArrayList attrs)
+
+ /// <summary>
+ /// For global attributes (assembly, module) we need special handling.
+ /// Attributes can be located in the several files
+ /// </summary>
+ public class GlobalAttribute: Attribute
+ {
+ public readonly NamespaceEntry ns;
+
+ public GlobalAttribute (TypeContainer container, string target, string name, ArrayList args, Location loc):
+ base (target, name, args, loc)
{
- Target = target;
- Attributes = attrs;
+ ns = container.NamespaceEntry;
+ }
+
+ protected override Type CheckAttributeType (EmitContext ec)
+ {
+ // RootContext.Tree.Types has a single NamespaceEntry which gets overwritten
+ // each time a new file is parsed. However, we need to use the NamespaceEntry
+ // in effect where the attribute was used. Since code elsewhere cannot assume
+ // that the NamespaceEntry is right, just overwrite it.
+ //
+ // Precondition: RootContext.Tree.Types == null || RootContext.Tree.Types == ns.
+ // The second case happens when we are recursively invoked from inside Emit.
+
+ NamespaceEntry old = null;
+ if (ec.DeclSpace == RootContext.Tree.Types) {
+ old = ec.DeclSpace.NamespaceEntry;
+ ec.DeclSpace.NamespaceEntry = ns;
+ if (old != null && old != ns)
+ throw new InternalErrorException (Location + " non-null NamespaceEntry " + old);
+ }
+
+ Type retval = base.CheckAttributeType (ec);
+
+ if (ec.DeclSpace == RootContext.Tree.Types)
+ ec.DeclSpace.NamespaceEntry = old;
+
+ return retval;
+ }
+
+ public override CustomAttributeBuilder Resolve (EmitContext ec)
+ {
+ if (ec.DeclSpace == RootContext.Tree.Types) {
+ NamespaceEntry old = ec.DeclSpace.NamespaceEntry;
+ ec.DeclSpace.NamespaceEntry = ns;
+ if (old != null)
+ throw new InternalErrorException (Location + " non-null NamespaceEntry " + old);
+ }
+
+ CustomAttributeBuilder retval = base.Resolve (ec);
+
+ if (ec.DeclSpace == RootContext.Tree.Types)
+ ec.DeclSpace.NamespaceEntry = null;
+
+ return retval;
}
-
}
public class Attributes {
- public ArrayList AttributeSections;
+ public ArrayList Attrs;
- public Attributes (AttributeSection a)
+ public Attributes (Attribute a)
{
- AttributeSections = new ArrayList ();
- AttributeSections.Add (a);
+ Attrs = new ArrayList ();
+ Attrs.Add (a);
+ }
+ public Attributes (ArrayList attrs)
+ {
+ Attrs = attrs;
}
- public void AddAttributeSection (AttributeSection a)
+ public void AddAttributes (ArrayList attrs)
{
- if (a != null && !AttributeSections.Contains (a))
- AttributeSections.Add (a);
+ Attrs.AddRange (attrs);
}
- public bool Contains (Type t)
+ /// <summary>
+ /// Checks whether attribute target is valid for the current element
+ /// </summary>
+ public bool CheckTargets (Attributable member)
{
- foreach (AttributeSection attr_section in AttributeSections){
- foreach (Attribute a in attr_section.Attributes){
- if (a.Type == t)
- return true;
+ string[] valid_targets = member.ValidAttributeTargets;
+ foreach (Attribute a in Attrs) {
+ if (a.ExplicitTarget == null || a.ExplicitTarget == valid_targets [0]) {
+ a.Target = member.AttributeTargets;
+ continue;
+ }
+
+ // TODO: we can skip the first item
+ if (((IList) valid_targets).Contains (a.ExplicitTarget)) {
+ switch (a.ExplicitTarget) {
+ case "return": a.Target = AttributeTargets.ReturnValue; continue;
+ case "param": a.Target = AttributeTargets.Parameter; continue;
+ case "field": a.Target = AttributeTargets.Field; continue;
+ case "method": a.Target = AttributeTargets.Method; continue;
+ case "property": a.Target = AttributeTargets.Property; continue;
+ }
+ throw new InternalErrorException ("Unknown explicit target: " + a.ExplicitTarget);
}
+
+ StringBuilder sb = new StringBuilder ();
+ foreach (string s in valid_targets) {
+ sb.Append (s);
+ sb.Append (", ");
+ }
+ sb.Remove (sb.Length - 2, 2);
+ Report.Error (657, a.Location, "'{0}' is not a valid attribute location for this declaration. Valid attribute locations for this declaration are '{1}'", a.ExplicitTarget, sb.ToString ());
+ return false;
}
-
- return false;
+ return true;
+ }
+
+ public Attribute Search (Type t, EmitContext ec)
+ {
+ foreach (Attribute a in Attrs) {
+ if (a.ResolveType (ec) == t)
+ return a;
+ }
+ return null;
+ }
+
+ /// <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) == 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)
+ {
+ if (!CheckTargets (ias))
+ return;
+
+ ListDictionary ld = new ListDictionary ();
+
+ foreach (Attribute a in Attrs)
+ a.Emit (ec, ias, ld);
+ }
+
+ public bool Contains (Type t, EmitContext ec)
+ {
+ return Search (t, ec) != null;
}
}
- public interface IAttributeSupport {
- void SetCustomAttribute (CustomAttributeBuilder customBuilder);
+ /// <summary>
+ /// Helper class for attribute verification routine.
+ /// </summary>
+ 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 ()
+ {
+ }
+
+ /// <summary>
+ /// Returns true if parameters of two compared methods are CLS-Compliant.
+ /// It tests differing only in ref or out, or in array rank.
+ /// </summary>
+ public static bool AreOverloadedMethodParamsClsCompliant (Type[] types_a, Type[] types_b)
+ {
+ if (types_a == null || types_b == null)
+ return true;
+
+ if (types_a.Length != types_b.Length)
+ return true;
+
+ for (int i = 0; i < types_b.Length; ++i) {
+ Type aType = types_a [i];
+ Type bType = types_b [i];
+
+ if (aType.IsArray && bType.IsArray && aType.GetArrayRank () != bType.GetArrayRank () && aType.GetElementType () == bType.GetElementType ()) {
+ return false;
+ }
+
+ Type aBaseType = aType;
+ bool is_either_ref_or_out = false;
+
+ if (aType.IsByRef || aType.IsPointer) {
+ aBaseType = aType.GetElementType ();
+ is_either_ref_or_out = true;
+ }
+
+ Type bBaseType = bType;
+ if (bType.IsByRef || bType.IsPointer)
+ {
+ bBaseType = bType.GetElementType ();
+ is_either_ref_or_out = !is_either_ref_or_out;
+ }
+
+ if (aBaseType != bBaseType)
+ continue;
+
+ if (is_either_ref_or_out)
+ return false;
+ }
+ return true;
+ }
+
+ /// <summary>
+ /// Goes through all parameters and test if they are CLS-Compliant.
+ /// </summary>
+ public static bool AreParametersCompliant (Parameter[] fixedParameters, Location loc)
+ {
+ if (fixedParameters == null)
+ return true;
+
+ foreach (Parameter arg in fixedParameters) {
+ if (!AttributeTester.IsClsCompliant (arg.ParameterType)) {
+ Report.Error (3001, loc, "Argument type '{0}' is not CLS-compliant", arg.GetSignatureForError ());
+ return false;
+ }
+ }
+ return true;
+ }
+
+
+ /// <summary>
+ /// This method tests the CLS compliance of external types. It doesn't test type visibility.
+ /// </summary>
+ public static bool IsClsCompliant (Type type)
+ {
+ if (type == null)
+ return true;
+
+ object type_compliance = analyzed_types[type];
+ if (type_compliance != null)
+ return type_compliance == TRUE;
+
+ if (type.IsPointer) {
+ analyzed_types.Add (type, null);
+ return false;
+ }
+
+ bool result;
+ if (type.IsArray || type.IsByRef) {
+ result = IsClsCompliant (TypeManager.GetElementType (type));
+ } else {
+ result = AnalyzeTypeCompliance (type);
+ }
+ analyzed_types.Add (type, result ? TRUE : FALSE);
+ return result;
+ }
+
+ static object TRUE = new object ();
+ static object FALSE = new object ();
+
+ public static void VerifyModulesClsCompliance ()
+ {
+ Module[] modules = TypeManager.Modules;
+ if (modules == null)
+ return;
+
+ // The first module is generated assembly
+ for (int i = 1; i < modules.Length; ++i) {
+ Module module = modules [i];
+ if (!IsClsCompliant (module)) {
+ Report.Error (3013, "Added modules must be marked with the CLSCompliant attribute to match the assembly", module.Name);
+ return;
+ }
+ }
+ }
+
+ /// <summary>
+ /// Tests container name for CLS-Compliant name (differing only in case)
+ /// </summary>
+ public static void VerifyTopLevelNameClsCompliance ()
+ {
+ Hashtable locase_table = new Hashtable ();
+
+ // Convert imported type names to lower case and ignore not cls compliant
+ foreach (DictionaryEntry de in TypeManager.all_imported_types) {
+ Type t = (Type)de.Value;
+ if (!AttributeTester.IsClsCompliant (t))
+ continue;
+
+ locase_table.Add (((string)de.Key).ToLower (System.Globalization.CultureInfo.InvariantCulture), t);
+ }
+
+ foreach (DictionaryEntry de in RootContext.Tree.Decls) {
+ DeclSpace decl = (DeclSpace)de.Value;
+ if (!decl.IsClsCompliaceRequired (decl))
+ continue;
+
+ string lcase = decl.Name.ToLower (System.Globalization.CultureInfo.InvariantCulture);
+ if (!locase_table.Contains (lcase)) {
+ locase_table.Add (lcase, decl);
+ continue;
+ }
+
+ object conflict = locase_table [lcase];
+ if (conflict is Type)
+ Report.SymbolRelatedToPreviousError ((Type)conflict);
+ else
+ Report.SymbolRelatedToPreviousError ((MemberCore)conflict);
+
+ Report.Error (3005, decl.Location, "Identifier '{0}' differing only in case is not CLS-compliant", decl.GetSignatureForError ());
+ }
+ }
+
+ static bool IsClsCompliant (ICustomAttributeProvider attribute_provider)
+ {
+ object[] CompliantAttribute = attribute_provider.GetCustomAttributes (TypeManager.cls_compliant_attribute_type, false);
+ if (CompliantAttribute.Length == 0)
+ return false;
+
+ return ((CLSCompliantAttribute)CompliantAttribute[0]).IsCompliant;
+ }
+
+ static bool AnalyzeTypeCompliance (Type type)
+ {
+ DeclSpace ds = TypeManager.LookupDeclSpace (type);
+ if (ds != null) {
+ return ds.IsClsCompliaceRequired (ds.Parent);
+ }
+
+ object[] CompliantAttribute = type.GetCustomAttributes (TypeManager.cls_compliant_attribute_type, false);
+ if (CompliantAttribute.Length == 0)
+ return IsClsCompliant (type.Assembly);
+
+ 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 {
+ 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 ();
+
+ // compiler generated methods are not registered by AddMethod
+ if (mb.DeclaringType is TypeBuilder)
+ return null;
+
+ 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;
+
+ 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 (619, loc, "'{0}' is obsolete: '{1}'", member, oa.Message);
+ return;
+ }
+
+ if (oa.Message == null) {
+ Report.Warning (612, loc, "'{0}' is obsolete", member);
+ return;
+ }
+ if (RootContext.WarningLevel >= 2)
+ Report.Warning (618, loc, "'{0}' is obsolete: '{1}'", member, oa.Message);
+ }
+
+ public static bool IsConditionalMethodExcluded (MethodBase mb)
+ {
+ object excluded = analyzed_method_excluded [mb];
+ if (excluded != null)
+ return excluded == TRUE ? true : 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