//
// attribute.cs: Attribute Handler
//
// Author: Ravi Pratap (ravi@ximian.com)
// Marek Safar (marek.safar@seznam.cz)
//
// Licensed under the terms of the GNU GPL
//
// (C) 2001 Ximian, Inc (http://www.ximian.com)
//
//
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;
using System.IO;
namespace Mono.CSharp {
///
/// Base class for objects that can have Attributes applied to them.
///
public abstract class Attributable {
///
/// Attributes for this type
///
protected Attributes attributes;
public Attributable (Attributes attrs)
{
if (attrs != null)
OptAttributes = attrs;
}
public Attributes OptAttributes
{
get {
return attributes;
}
set {
attributes = value;
if (attributes != null) {
attributes.AttachTo (this);
}
}
}
///
/// Use member-specific procedure to apply attribute @a in @cb to the entity being built in @builder
///
public abstract void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb);
///
/// Returns one AttributeTarget for this element.
///
public abstract AttributeTargets AttributeTargets { get; }
public abstract IResolveContext ResolveContext { get; }
public abstract bool IsClsComplianceRequired ();
///
/// Gets list of valid attribute targets for explicit target declaration.
/// The first array item is default target. Don't break this rule.
///
public abstract string[] ValidAttributeTargets { get; }
};
public class Attribute {
public readonly string ExplicitTarget;
public AttributeTargets Target;
// TODO: remove this member
public readonly string Name;
public readonly Expression LeftExpr;
public readonly string Identifier;
readonly ArrayList PosArguments;
ArrayList NamedArguments;
public readonly Location Location;
public Type Type;
bool resolve_error;
readonly bool nameEscaped;
// It can contain more onwers when the attribute is applied to multiple fiels.
protected Attributable[] owners;
static readonly AttributeUsageAttribute DefaultUsageAttribute = new AttributeUsageAttribute (AttributeTargets.All);
static Assembly orig_sec_assembly;
public static readonly object[] EmptyObject = new object [0];
// non-null if named args present after Resolve () is called
PropertyInfo [] prop_info_arr;
FieldInfo [] field_info_arr;
object [] field_values_arr;
object [] prop_values_arr;
object [] pos_values;
static PtrHashtable usage_attr_cache;
// Cache for parameter-less attributes
static PtrHashtable att_cache;
public Attribute (string target, Expression left_expr, string identifier, object[] args, Location loc, bool nameEscaped)
{
LeftExpr = left_expr;
Identifier = identifier;
Name = LeftExpr == null ? identifier : LeftExpr + "." + identifier;
if (args != null) {
PosArguments = (ArrayList)args [0];
NamedArguments = (ArrayList)args [1];
}
Location = loc;
ExplicitTarget = target;
this.nameEscaped = nameEscaped;
}
static Attribute ()
{
Reset ();
}
public static void Reset ()
{
usage_attr_cache = new PtrHashtable ();
att_cache = new PtrHashtable ();
}
public virtual void AttachTo (Attributable owner)
{
if (this.owners == null) {
this.owners = new Attributable[1] { owner };
return;
}
// When the same attribute is attached to multiple fiels
// we use this extra_owners as a list of owners. The attribute
// then can be removed because will be emitted when first owner
// is served
Attributable[] new_array = new Attributable [this.owners.Length + 1];
owners.CopyTo (new_array, 0);
new_array [owners.Length] = owner;
this.owners = new_array;
owner.OptAttributes = null;
}
void Error_InvalidNamedArgument (string name)
{
Report.Error (617, Location, "`{0}' is not a valid named attribute argument. Named attribute arguments " +
"must be fields which are not readonly, static, const or read-write properties which are " +
"public and not static",
name);
}
void Error_InvalidNamedAgrumentType (string name)
{
Report.Error (655, Location, "`{0}' is not a valid named attribute argument because it is not a valid " +
"attribute parameter type", name);
}
public static void Error_AttributeArgumentNotValid (Location loc)
{
Report.Error (182, loc,
"An attribute argument must be a constant expression, typeof " +
"expression or array creation expression");
}
static void Error_TypeParameterInAttribute (Location loc)
{
Report.Error (
-202, loc, "Can not use a type parameter in an attribute");
}
public void Error_MissingGuidAttribute ()
{
Report.Error (596, Location, "The Guid attribute must be specified with the ComImport attribute");
}
public void Error_MisusedExtensionAttribute ()
{
Report.Error (1112, Location, "Do not use `{0}' directly. Use parameter modifier `this' instead", GetSignatureForError ());
}
///
/// 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.
///
public void Error_AttributeEmitError (string inner)
{
Report.Error (647, Location, "Error during emitting `{0}' attribute. The reason is `{1}'",
TypeManager.CSharpName (Type), inner);
}
public void Error_InvalidSecurityParent ()
{
Error_AttributeEmitError ("it is attached to invalid parent");
}
Attributable Owner {
get {
return owners [0];
}
}
protected virtual TypeExpr ResolveAsTypeTerminal (Expression expr, IResolveContext ec, bool silent)
{
return expr.ResolveAsTypeTerminal (ec, silent);
}
Type ResolvePossibleAttributeType (string name, bool silent, ref bool is_attr)
{
IResolveContext rc = Owner.ResolveContext;
TypeExpr te;
if (LeftExpr == null) {
te = ResolveAsTypeTerminal (new SimpleName (name, Location), rc, silent);
} else {
te = ResolveAsTypeTerminal (new MemberAccess (LeftExpr, name), rc, silent);
}
if (te == null)
return null;
Type t = te.Type;
if (TypeManager.IsSubclassOf (t, TypeManager.attribute_type)) {
is_attr = true;
} else if (!silent) {
Report.SymbolRelatedToPreviousError (t);
Report.Error (616, Location, "`{0}': is not an attribute class", TypeManager.CSharpName (t));
}
return t;
}
///
/// Tries to resolve the type of the attribute. Flags an error if it can't, and complain is true.
///
void ResolveAttributeType ()
{
bool t1_is_attr = false;
Type t1 = ResolvePossibleAttributeType (Identifier, true, ref t1_is_attr);
bool t2_is_attr = false;
Type t2 = nameEscaped ? null :
ResolvePossibleAttributeType (Identifier + "Attribute", true, ref t2_is_attr);
if (t1_is_attr && t2_is_attr) {
Report.Error (1614, Location, "`{0}' is ambiguous between `{0}' and `{0}Attribute'. " +
"Use either `@{0}' or `{0}Attribute'", GetSignatureForError ());
resolve_error = true;
return;
}
if (t1_is_attr) {
Type = t1;
return;
}
if (t2_is_attr) {
Type = t2;
return;
}
if (t1 == null && t2 == null)
ResolvePossibleAttributeType (Identifier, false, ref t1_is_attr);
if (t1 != null)
ResolvePossibleAttributeType (Identifier, false, ref t1_is_attr);
if (t2 != null)
ResolvePossibleAttributeType (Identifier + "Attribute", false, ref t2_is_attr);
resolve_error = true;
}
public virtual Type ResolveType ()
{
if (Type == null && !resolve_error)
ResolveAttributeType ();
return Type;
}
public string GetSignatureForError ()
{
if (Type != null)
return TypeManager.CSharpName (Type);
return LeftExpr == null ? Identifier : LeftExpr.GetSignatureForError () + "." + Identifier;
}
bool IsValidArgumentType (Type t)
{
if (t.IsArray)
t = t.GetElementType ();
return TypeManager.IsPrimitiveType (t) ||
TypeManager.IsEnumType (t) ||
t == TypeManager.string_type ||
t == TypeManager.object_type ||
t == TypeManager.type_type;
}
[Conditional ("GMCS_SOURCE")]
void ApplyModuleCharSet ()
{
if (Type != TypeManager.dllimport_type)
return;
if (!CodeGen.Module.HasDefaultCharSet)
return;
const string CharSetEnumMember = "CharSet";
if (NamedArguments == null) {
NamedArguments = new ArrayList (1);
} else {
foreach (DictionaryEntry de in NamedArguments) {
if ((string)de.Key == CharSetEnumMember)
return;
}
}
NamedArguments.Add (new DictionaryEntry (CharSetEnumMember,
new Argument (Constant.CreateConstant (typeof (CharSet), CodeGen.Module.DefaultCharSet, Location))));
}
public CustomAttributeBuilder Resolve ()
{
if (resolve_error)
return null;
resolve_error = true;
if (Type == null) {
ResolveAttributeType ();
if (Type == null)
return null;
}
if (Type.IsAbstract) {
Report.Error (653, Location, "Cannot apply attribute class `{0}' because it is abstract", GetSignatureForError ());
return null;
}
ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (Type);
if (obsolete_attr != null) {
AttributeTester.Report_ObsoleteMessage (obsolete_attr, TypeManager.CSharpName (Type), Location);
}
if (PosArguments == null && NamedArguments == null) {
object o = att_cache [Type];
if (o != null) {
resolve_error = false;
return (CustomAttributeBuilder)o;
}
}
Attributable owner = Owner;
EmitContext ec = new EmitContext (owner.ResolveContext, owner.ResolveContext.DeclContainer, owner.ResolveContext.DeclContainer,
Location, null, typeof (Attribute), owner.ResolveContext.DeclContainer.ModFlags, false);
ec.IsAnonymousMethodAllowed = false;
ConstructorInfo ctor = ResolveConstructor (ec);
if (ctor == null) {
if (Type is TypeBuilder &&
TypeManager.LookupDeclSpace (Type).MemberCache == null)
// The attribute type has been DefineType'd, but not Defined. Let's not treat it as an error.
// It'll be resolved again when the attached-to entity is emitted.
resolve_error = false;
return null;
}
ApplyModuleCharSet ();
CustomAttributeBuilder cb;
try {
if (NamedArguments == null) {
cb = new CustomAttributeBuilder (ctor, pos_values);
if (pos_values.Length == 0)
att_cache.Add (Type, cb);
resolve_error = false;
return cb;
}
if (!ResolveNamedArguments (ec)) {
return null;
}
cb = new CustomAttributeBuilder (ctor, pos_values,
prop_info_arr, prop_values_arr,
field_info_arr, field_values_arr);
resolve_error = false;
return cb;
}
catch (Exception) {
Error_AttributeArgumentNotValid (Location);
return null;
}
}
protected virtual ConstructorInfo ResolveConstructor (EmitContext ec)
{
if (PosArguments != null) {
for (int i = 0; i < PosArguments.Count; i++) {
Argument a = (Argument) PosArguments [i];
if (!a.Resolve (ec, Location))
return null;
}
}
MethodGroupExpr mg = Expression.MemberLookup (ec.ContainerType,
Type, ".ctor", MemberTypes.Constructor,
BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly,
Location) as MethodGroupExpr;
if (mg == null)
return null;
mg = mg.OverloadResolve (ec, PosArguments, false, Location);
if (mg == null)
return null;
ConstructorInfo constructor = (ConstructorInfo)mg;
// TODO: move to OverloadResolve
ObsoleteAttribute oa = AttributeTester.GetMethodObsoleteAttribute (constructor);
if (oa != null && !Owner.ResolveContext.IsInObsoleteScope) {
AttributeTester.Report_ObsoleteMessage (oa, mg.GetSignatureForError (), mg.Location);
}
if (PosArguments == null) {
pos_values = EmptyObject;
return constructor;
}
ParameterData pd = TypeManager.GetParameterData (constructor);
int pos_arg_count = PosArguments.Count;
int last_real_param = pd.Count;
pos_values = new object [pos_arg_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) PosArguments [j];
if (!a.Expr.GetAttributableValue (a.Type, out pos_values [j]))
return null;
if (j < last_real_param)
continue;
if (j == last_real_param) {
object [] array = new object [pos_arg_count - last_real_param];
array [0] = pos_values [j];
pos_values [j] = array;
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 (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;
}
// Here we do the checks which should be done by corlib or by runtime.
// However Zoltan doesn't like it and every Mono compiler has to do it again.
if (Type == TypeManager.guid_attr_type) {
try {
new Guid ((string)pos_values [0]);
}
catch (Exception e) {
Error_AttributeEmitError (e.Message);
return null;
}
}
if (Type == TypeManager.attribute_usage_type && (int)pos_values [0] == 0) {
Report.Error (591, Location, "Invalid value for argument to `System.AttributeUsage' attribute");
return null;
}
if (Type == TypeManager.indexer_name_type || Type == TypeManager.conditional_attribute_type) {
if (!Tokenizer.IsValidIdentifier ((string)pos_values [0])) {
Report.Error (633, ((Argument)PosArguments[0]).Expr.Location,
"The argument to the `{0}' attribute must be a valid identifier", GetSignatureForError ());
return null;
}
}
if (Type == TypeManager.methodimpl_attr_type && pos_values.Length == 1 &&
pd.ParameterType (0) == TypeManager.short_type &&
!System.Enum.IsDefined (typeof (MethodImplOptions), pos_values [0].ToString ())) {
Error_AttributeEmitError ("Incorrect argument value.");
return null;
}
return (ConstructorInfo)constructor;
}
protected virtual bool ResolveNamedArguments (EmitContext ec)
{
int named_arg_count = NamedArguments.Count;
ArrayList field_infos = new ArrayList (named_arg_count);
ArrayList prop_infos = new ArrayList (named_arg_count);
ArrayList field_values = new ArrayList (named_arg_count);
ArrayList prop_values = new ArrayList (named_arg_count);
ArrayList seen_names = new ArrayList(named_arg_count);
foreach (DictionaryEntry de in NamedArguments) {
string member_name = (string) de.Key;
if (seen_names.Contains(member_name)) {
Report.Error(643, Location, "'" + member_name + "' duplicate named attribute argument");
return false;
}
seen_names.Add(member_name);
Argument a = (Argument) de.Value;
if (!a.Resolve (ec, Location))
return false;
Expression member = Expression.MemberLookup (
ec.ContainerType, Type, member_name,
MemberTypes.Field | MemberTypes.Property,
BindingFlags.Public | BindingFlags.Instance,
Location);
if (member == null) {
member = Expression.MemberLookup (ec.ContainerType, Type, member_name,
MemberTypes.Field | MemberTypes.Property, BindingFlags.NonPublic | BindingFlags.Instance,
Location);
if (member != null) {
Report.SymbolRelatedToPreviousError (member.Type);
Expression.ErrorIsInaccesible (Location, member.GetSignatureForError ());
return false;
}
}
if (member == null){
Expression.Error_TypeDoesNotContainDefinition (Location, Type, member_name);
return false;
}
if (!(member is PropertyExpr || member is FieldExpr)) {
Error_InvalidNamedArgument (member_name);
return false;
}
if (a.Expr is TypeParameterExpr){
Error_TypeParameterInAttribute (Location);
return false;
}
ObsoleteAttribute obsolete_attr;
if (member is PropertyExpr) {
PropertyInfo pi = ((PropertyExpr) member).PropertyInfo;
if (!pi.CanWrite || !pi.CanRead) {
Report.SymbolRelatedToPreviousError (pi);
Error_InvalidNamedArgument (member_name);
return false;
}
if (!IsValidArgumentType (pi.PropertyType)) {
Report.SymbolRelatedToPreviousError (pi);
Error_InvalidNamedAgrumentType (member_name);
return false;
}
object value;
if (!a.Expr.GetAttributableValue (pi.PropertyType, out value))
return false;
PropertyBase pb = TypeManager.GetProperty (pi);
if (pb != null)
obsolete_attr = pb.GetObsoleteAttribute ();
else
obsolete_attr = AttributeTester.GetMemberObsoleteAttribute (pi);
prop_values.Add (value);
prop_infos.Add (pi);
} else {
FieldInfo fi = ((FieldExpr) member).FieldInfo;
if (fi.IsInitOnly) {
Error_InvalidNamedArgument (member_name);
return false;
}
if (!IsValidArgumentType (fi.FieldType)) {
Report.SymbolRelatedToPreviousError (fi);
Error_InvalidNamedAgrumentType (member_name);
return false;
}
object value;
if (!a.Expr.GetAttributableValue (fi.FieldType, out value))
return false;
FieldBase fb = TypeManager.GetField (fi);
if (fb != null)
obsolete_attr = fb.GetObsoleteAttribute ();
else
obsolete_attr = AttributeTester.GetMemberObsoleteAttribute (fi);
field_values.Add (value);
field_infos.Add (fi);
}
if (obsolete_attr != null && !Owner.ResolveContext.IsInObsoleteScope)
AttributeTester.Report_ObsoleteMessage (obsolete_attr, member.GetSignatureForError (), member.Location);
}
prop_info_arr = new PropertyInfo [prop_infos.Count];
field_info_arr = new FieldInfo [field_infos.Count];
field_values_arr = new object [field_values.Count];
prop_values_arr = new object [prop_values.Count];
field_infos.CopyTo (field_info_arr, 0);
field_values.CopyTo (field_values_arr, 0);
prop_values.CopyTo (prop_values_arr, 0);
prop_infos.CopyTo (prop_info_arr, 0);
return true;
}
///
/// Get a string containing a list of valid targets for the attribute 'attr'
///
public string GetValidTargets ()
{
StringBuilder sb = new StringBuilder ();
AttributeTargets targets = GetAttributeUsage (Type).ValidOn;
if ((targets & AttributeTargets.Assembly) != 0)
sb.Append ("assembly, ");
if ((targets & AttributeTargets.Module) != 0)
sb.Append ("module, ");
if ((targets & AttributeTargets.Class) != 0)
sb.Append ("class, ");
if ((targets & AttributeTargets.Struct) != 0)
sb.Append ("struct, ");
if ((targets & AttributeTargets.Enum) != 0)
sb.Append ("enum, ");
if ((targets & AttributeTargets.Constructor) != 0)
sb.Append ("constructor, ");
if ((targets & AttributeTargets.Method) != 0)
sb.Append ("method, ");
if ((targets & AttributeTargets.Property) != 0)
sb.Append ("property, indexer, ");
if ((targets & AttributeTargets.Field) != 0)
sb.Append ("field, ");
if ((targets & AttributeTargets.Event) != 0)
sb.Append ("event, ");
if ((targets & AttributeTargets.Interface) != 0)
sb.Append ("interface, ");
if ((targets & AttributeTargets.Parameter) != 0)
sb.Append ("parameter, ");
if ((targets & AttributeTargets.Delegate) != 0)
sb.Append ("delegate, ");
if ((targets & AttributeTargets.ReturnValue) != 0)
sb.Append ("return, ");
#if NET_2_0
if ((targets & AttributeTargets.GenericParameter) != 0)
sb.Append ("type parameter, ");
#endif
return sb.Remove (sb.Length - 2, 2).ToString ();
}
///
/// Returns AttributeUsage attribute based on types hierarchy
///
static AttributeUsageAttribute GetAttributeUsage (Type type)
{
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;
}
Attribute a = null;
if (attr_class.OptAttributes != null)
a = attr_class.OptAttributes.Search (TypeManager.attribute_usage_type);
if (a == null) {
if (attr_class.TypeBuilder.BaseType != TypeManager.attribute_type)
ua = GetAttributeUsage (attr_class.TypeBuilder.BaseType);
else
ua = DefaultUsageAttribute;
} else {
ua = a.GetAttributeUsageAttribute ();
}
usage_attr_cache.Add (type, ua);
return ua;
}
AttributeUsageAttribute GetAttributeUsageAttribute ()
{
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 ();
if (resolve_error)
return DefaultUsageAttribute;
AttributeUsageAttribute usage_attribute = new AttributeUsageAttribute ((AttributeTargets)pos_values [0]);
object field = GetPropertyValue ("AllowMultiple");
if (field != null)
usage_attribute.AllowMultiple = (bool)field;
field = GetPropertyValue ("Inherited");
if (field != null)
usage_attribute.Inherited = (bool)field;
return usage_attribute;
}
///
/// Returns custom name of indexer
///
public string GetIndexerAttributeValue ()
{
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 ();
if (resolve_error)
return null;
return pos_values [0] as string;
}
///
/// Returns condition of ConditionalAttribute
///
public string GetConditionalAttributeValue ()
{
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 ();
if (resolve_error)
return null;
return (string)pos_values [0];
}
///
/// Creates the instance of ObsoleteAttribute from this attribute instance
///
public ObsoleteAttribute GetObsoleteAttribute ()
{
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 ();
if (resolve_error)
return null;
if (pos_values == null || pos_values.Length == 0)
return new ObsoleteAttribute ();
if (pos_values.Length == 1)
return new ObsoleteAttribute ((string)pos_values [0]);
return new ObsoleteAttribute ((string)pos_values [0], (bool)pos_values [1]);
}
///
/// 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.
///
public bool GetClsCompliantAttributeValue ()
{
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 ();
if (resolve_error)
return false;
return (bool)pos_values [0];
}
public Type GetCoClassAttributeValue ()
{
if (pos_values == null)
Resolve ();
if (resolve_error)
return null;
return (Type)pos_values [0];
}
public bool CheckTarget ()
{
string[] valid_targets = Owner.ValidAttributeTargets;
if (ExplicitTarget == null || ExplicitTarget == valid_targets [0]) {
Target = Owner.AttributeTargets;
return true;
}
// TODO: we can skip the first item
if (((IList) valid_targets).Contains (ExplicitTarget)) {
switch (ExplicitTarget) {
case "return": Target = AttributeTargets.ReturnValue; return true;
case "param": Target = AttributeTargets.Parameter; return true;
case "field": Target = AttributeTargets.Field; return true;
case "method": Target = AttributeTargets.Method; return true;
case "property": Target = AttributeTargets.Property; return true;
}
throw new InternalErrorException ("Unknown explicit target: " + 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, Location, "`{0}' is not a valid attribute location for this declaration. " +
"Valid attribute locations for this declaration are `{1}'", ExplicitTarget, sb.ToString ());
return false;
}
///
/// Tests permitted SecurityAction for assembly or other types
///
public bool CheckSecurityActionValidity (bool for_assembly)
{
SecurityAction action = GetSecurityActionValue ();
switch (action) {
case SecurityAction.Demand:
case SecurityAction.Assert:
case SecurityAction.Deny:
case SecurityAction.PermitOnly:
case SecurityAction.LinkDemand:
case SecurityAction.InheritanceDemand:
if (!for_assembly)
return true;
break;
case SecurityAction.RequestMinimum:
case SecurityAction.RequestOptional:
case SecurityAction.RequestRefuse:
if (for_assembly)
return true;
break;
default:
Error_AttributeEmitError ("SecurityAction is out of range");
return false;
}
Error_AttributeEmitError (String.Concat ("SecurityAction `", action, "' is not valid for this declaration"));
return false;
}
System.Security.Permissions.SecurityAction GetSecurityActionValue ()
{
return (SecurityAction)pos_values [0];
}
///
/// Creates instance of SecurityAttribute class and add result of CreatePermission method to permission table.
///
///
public void ExtractSecurityPermissionSet (ListDictionary permissions)
{
Type orig_assembly_type = null;
if (TypeManager.LookupDeclSpace (Type) != null) {
if (!RootContext.StdLib) {
orig_assembly_type = Type.GetType (Type.FullName);
} else {
string orig_version_path = Environment.GetEnvironmentVariable ("__SECURITY_BOOTSTRAP_DB");
if (orig_version_path == null) {
Error_AttributeEmitError ("security custom attributes can not be referenced from defining assembly");
return;
}
if (orig_sec_assembly == null) {
string file = Path.Combine (orig_version_path, Driver.OutputFile);
orig_sec_assembly = Assembly.LoadFile (file);
}
orig_assembly_type = orig_sec_assembly.GetType (Type.FullName, true);
if (orig_assembly_type == null) {
Report.Warning (-112, 1, Location, "Self-referenced security attribute `{0}' " +
"was not found in previous version of assembly");
return;
}
}
}
SecurityAttribute sa;
// For all non-selfreferencing security attributes we can avoid all hacks
if (orig_assembly_type == null) {
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 {
// HACK: All security attributes have same ctor syntax
sa = (SecurityAttribute) Activator.CreateInstance (orig_assembly_type, new object[] { GetSecurityActionValue () } );
// All types are from newly created assembly but for invocation with old one 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 = orig_assembly_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;
perm = sa.CreatePermission ();
SecurityAction action = GetSecurityActionValue ();
// IS is correct because for corlib we are using an instance from old corlib
if (!(perm is System.Security.CodeAccessPermission)) {
switch (action) {
case SecurityAction.Demand:
action = (SecurityAction)13;
break;
case SecurityAction.LinkDemand:
action = (SecurityAction)14;
break;
case SecurityAction.InheritanceDemand:
action = (SecurityAction)15;
break;
}
}
PermissionSet ps = (PermissionSet)permissions [action];
if (ps == null) {
if (sa is PermissionSetAttribute)
ps = new PermissionSet (sa.Unrestricted ? PermissionState.Unrestricted : PermissionState.None);
else
ps = new PermissionSet (PermissionState.None);
permissions.Add (action, ps);
} else if (!ps.IsUnrestricted () && (sa is PermissionSetAttribute) && sa.Unrestricted) {
ps = ps.Union (new PermissionSet (PermissionState.Unrestricted));
permissions [action] = ps;
}
ps.AddPermission (perm);
}
static object GetValue (object value)
{
if (value is EnumConstant)
return ((EnumConstant) value).GetValue ();
else
return value;
}
public object GetPropertyValue (string name)
{
if (prop_info_arr == null)
return null;
for (int i = 0; i < prop_info_arr.Length; ++i) {
if (prop_info_arr [i].Name == name)
return prop_values_arr [i];
}
return null;
}
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 GetValue (field_values_arr [i]);
i++;
}
return null;
}
//
// Theoretically, we can get rid of this, since FieldBuilder.SetCustomAttribute()
// and ParameterBuilder.SetCustomAttribute() are supposed to handle this attribute.
// However, we can't, since it appears that the .NET 1.1 SRE hangs when given a MarshalAsAttribute.
//
public UnmanagedMarshal GetMarshal (Attributable attr)
{
UnmanagedType UnmanagedType;
if (!RootContext.StdLib || pos_values [0].GetType () != typeof (UnmanagedType))
UnmanagedType = (UnmanagedType) System.Enum.ToObject (typeof (UnmanagedType), pos_values [0]);
else
UnmanagedType = (UnmanagedType) pos_values [0];
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) 0x50 /* NATIVE_MAX */ : (UnmanagedType) o;
switch (UnmanagedType) {
case UnmanagedType.CustomMarshaler: {
MethodInfo define_custom = typeof (UnmanagedMarshal).GetMethod ("DefineCustom",
BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
if (define_custom == null) {
Report.RuntimeMissingSupport (Location, "set marshal info");
return null;
}
object [] args = new object [4];
args [0] = GetFieldValue ("MarshalTypeRef");
args [1] = GetFieldValue ("MarshalCookie");
args [2] = GetFieldValue ("MarshalType");
args [3] = Guid.Empty;
return (UnmanagedMarshal) define_custom.Invoke (null, args);
}
case UnmanagedType.LPArray: {
object size_const = GetFieldValue ("SizeConst");
object size_param_index = GetFieldValue ("SizeParamIndex");
if ((size_const != null) || (size_param_index != null)) {
MethodInfo define_array = typeof (UnmanagedMarshal).GetMethod ("DefineLPArrayInternal",
BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
if (define_array == null) {
Report.RuntimeMissingSupport (Location, "set marshal info");
return null;
}
object [] args = new object [3];
args [0] = array_sub_type;
args [1] = size_const == null ? -1 : size_const;
args [2] = size_param_index == null ? -1 : size_param_index;
return (UnmanagedMarshal) define_array.Invoke (null, args);
}
else
return UnmanagedMarshal.DefineLPArray (array_sub_type);
}
case UnmanagedType.SafeArray:
return UnmanagedMarshal.DefineSafeArray (array_sub_type);
case UnmanagedType.ByValArray:
FieldBase fm = attr as FieldBase;
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 ("SizeConst"));
default:
return UnmanagedMarshal.DefineUnmanagedMarshal (UnmanagedType);
}
}
public CharSet GetCharSetValue ()
{
return (CharSet)System.Enum.Parse (typeof (CharSet), pos_values [0].ToString ());
}
public bool IsInternalMethodImplAttribute {
get {
if (Type != TypeManager.methodimpl_attr_type)
return false;
MethodImplOptions options;
if (pos_values[0].GetType () != typeof (MethodImplOptions))
options = (MethodImplOptions)System.Enum.ToObject (typeof (MethodImplOptions), pos_values[0]);
else
options = (MethodImplOptions)pos_values[0];
return (options & MethodImplOptions.InternalCall) != 0;
}
}
public LayoutKind GetLayoutKindValue ()
{
if (!RootContext.StdLib || pos_values [0].GetType () != typeof (LayoutKind))
return (LayoutKind)System.Enum.ToObject (typeof (LayoutKind), pos_values [0]);
return (LayoutKind)pos_values [0];
}
public object GetParameterDefaultValue ()
{
return pos_values [0];
}
public override bool Equals (object obj)
{
Attribute a = obj as Attribute;
if (a == null)
return false;
return Type == a.Type && Target == a.Target;
}
public override int GetHashCode ()
{
return base.GetHashCode ();
}
///
/// Emit attribute for Attributable symbol
///
public void Emit (ListDictionary allEmitted)
{
CustomAttributeBuilder cb = Resolve ();
if (cb == null)
return;
AttributeUsageAttribute usage_attr = GetAttributeUsage (Type);
if ((usage_attr.ValidOn & Target) == 0) {
Report.Error (592, Location, "The attribute `{0}' is not valid on this declaration type. " +
"It is valid on `{1}' declarations only",
GetSignatureForError (), GetValidTargets ());
return;
}
try {
foreach (Attributable owner in owners)
owner.ApplyAttributeBuilder (this, cb);
}
catch (Exception e) {
Error_AttributeEmitError (e.Message);
return;
}
if (!usage_attr.AllowMultiple && allEmitted != null) {
if (allEmitted.Contains (this)) {
ArrayList a = allEmitted [this] as ArrayList;
if (a == null) {
a = new ArrayList (2);
allEmitted [this] = a;
}
a.Add (this);
} else {
allEmitted.Add (this, null);
}
}
if (!RootContext.VerifyClsCompliance)
return;
// Here we are testing attribute arguments for array usage (error 3016)
if (Owner.IsClsComplianceRequired ()) {
if (PosArguments != null) {
foreach (Argument arg in PosArguments) {
// 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;
}
}
}
if (NamedArguments == null)
return;
foreach (DictionaryEntry de in NamedArguments) {
Argument arg = (Argument) de.Value;
// 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;
}
}
}
}
private Expression GetValue ()
{
if (PosArguments == null || PosArguments.Count < 1)
return null;
return ((Argument) PosArguments [0]).Expr;
}
public string GetString ()
{
Expression e = GetValue ();
if (e is StringConstant)
return ((StringConstant)e).Value;
return null;
}
public bool GetBoolean ()
{
Expression e = GetValue ();
if (e is BoolConstant)
return ((BoolConstant)e).Value;
return false;
}
public Type GetArgumentType ()
{
TypeOf e = GetValue () as TypeOf;
if (e == null)
return null;
return e.TypeArgument;
}
}
///
/// For global attributes (assembly, module) we need special handling.
/// Attributes can be located in the several files
///
public class GlobalAttribute : Attribute
{
public readonly NamespaceEntry ns;
public GlobalAttribute (NamespaceEntry ns, string target,
Expression left_expr, string identifier, object[] args, Location loc, bool nameEscaped):
base (target, left_expr, identifier, args, loc, nameEscaped)
{
this.ns = ns;
this.owners = new Attributable[1];
}
public override void AttachTo (Attributable owner)
{
if (ExplicitTarget == "assembly") {
owners [0] = CodeGen.Assembly;
return;
}
if (ExplicitTarget == "module") {
owners [0] = CodeGen.Module;
return;
}
throw new NotImplementedException ("Unknown global explicit target " + ExplicitTarget);
}
void Enter ()
{
// RootContext.ToplevelTypes 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.ToplevelTypes == null
if (RootContext.ToplevelTypes.NamespaceEntry != null)
throw new InternalErrorException (Location + " non-null NamespaceEntry");
RootContext.ToplevelTypes.NamespaceEntry = ns;
}
void Leave ()
{
RootContext.ToplevelTypes.NamespaceEntry = null;
}
protected override TypeExpr ResolveAsTypeTerminal (Expression expr, IResolveContext ec, bool silent)
{
try {
Enter ();
return base.ResolveAsTypeTerminal (expr, ec, silent);
}
finally {
Leave ();
}
}
protected override ConstructorInfo ResolveConstructor (EmitContext ec)
{
try {
Enter ();
return base.ResolveConstructor (ec);
}
finally {
Leave ();
}
}
protected override bool ResolveNamedArguments (EmitContext ec)
{
try {
Enter ();
return base.ResolveNamedArguments (ec);
}
finally {
Leave ();
}
}
}
public class Attributes {
public readonly ArrayList Attrs;
public Attributes (Attribute a)
{
Attrs = new ArrayList ();
Attrs.Add (a);
}
public Attributes (ArrayList attrs)
{
Attrs = attrs;
}
public void AddAttributes (ArrayList attrs)
{
Attrs.AddRange (attrs);
}
public void AttachTo (Attributable attributable)
{
foreach (Attribute a in Attrs)
a.AttachTo (attributable);
}
///
/// Checks whether attribute target is valid for the current element
///
public bool CheckTargets ()
{
foreach (Attribute a in Attrs) {
if (!a.CheckTarget ())
return false;
}
return true;
}
public Attribute Search (Type t)
{
foreach (Attribute a in Attrs) {
if (a.ResolveType () == t)
return a;
}
return null;
}
///
/// Returns all attributes of type 't'. Use it when attribute is AllowMultiple = true
///
public Attribute[] SearchMulti (Type t)
{
ArrayList ar = null;
foreach (Attribute a in Attrs) {
if (a.ResolveType () == t) {
if (ar == null)
ar = new ArrayList ();
ar.Add (a);
}
}
return ar == null ? null : ar.ToArray (typeof (Attribute)) as Attribute[];
}
public void Emit ()
{
CheckTargets ();
ListDictionary ld = Attrs.Count > 1 ? new ListDictionary () : null;
foreach (Attribute a in Attrs)
a.Emit (ld);
if (ld == null || ld.Count == 0)
return;
foreach (DictionaryEntry d in ld) {
if (d.Value == null)
continue;
foreach (Attribute collision in (ArrayList)d.Value)
Report.SymbolRelatedToPreviousError (collision.Location, "");
Attribute a = (Attribute)d.Key;
Report.Error (579, a.Location, "The attribute `{0}' cannot be applied multiple times",
a.GetSignatureForError ());
}
}
public bool Contains (Type t)
{
return Search (t) != null;
}
}
///
/// Helper class for attribute verification routine.
///
sealed class AttributeTester
{
static PtrHashtable analyzed_types;
static PtrHashtable analyzed_types_obsolete;
static PtrHashtable analyzed_member_obsolete;
static PtrHashtable analyzed_method_excluded;
#if NET_2_0
static PtrHashtable fixed_buffer_cache;
#endif
static object TRUE = new object ();
static object FALSE = new object ();
static AttributeTester ()
{
Reset ();
}
private AttributeTester ()
{
}
public static void Reset ()
{
analyzed_types = new PtrHashtable ();
analyzed_types_obsolete = new PtrHashtable ();
analyzed_member_obsolete = new PtrHashtable ();
analyzed_method_excluded = new PtrHashtable ();
#if NET_2_0
fixed_buffer_cache = new PtrHashtable ();
#endif
}
public enum Result {
Ok,
RefOutArrayError,
ArrayArrayError
}
///
/// Returns true if parameters of two compared methods are CLS-Compliant.
/// It tests differing only in ref or out, or in array rank.
///
public static Result AreOverloadedMethodParamsClsCompliant (Type[] types_a, Type[] types_b)
{
if (types_a == null || types_b == null)
return Result.Ok;
if (types_a.Length != types_b.Length)
return Result.Ok;
Result result = Result.Ok;
for (int i = 0; i < types_b.Length; ++i) {
Type aType = types_a [i];
Type bType = types_b [i];
if (aType.IsArray && bType.IsArray) {
Type a_el_type = aType.GetElementType ();
Type b_el_type = bType.GetElementType ();
if (aType.GetArrayRank () != bType.GetArrayRank () && a_el_type == b_el_type) {
result = Result.RefOutArrayError;
continue;
}
if (a_el_type.IsArray || b_el_type.IsArray) {
result = Result.ArrayArrayError;
continue;
}
}
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)
return Result.Ok;
if (is_either_ref_or_out)
result = Result.RefOutArrayError;
}
return result;
}
///
/// This method tests the CLS compliance of external types. It doesn't test type visibility.
///
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 if (TypeManager.IsNullableType (type)) {
result = IsClsCompliant (TypeManager.GetTypeArguments (type) [0]);
} else {
result = AnalyzeTypeCompliance (type);
}
analyzed_types.Add (type, result ? TRUE : FALSE);
return result;
}
///
/// Returns IFixedBuffer implementation if field is fixed buffer else null.
///
public static IFixedBuffer GetFixedBuffer (FieldInfo fi)
{
// Fixed buffer helper type is generated as value type
if (!fi.FieldType.IsValueType)
return null;
FieldBase fb = TypeManager.GetField (fi);
if (fb != null) {
return fb as IFixedBuffer;
}
if (TypeManager.GetConstant (fi) != null)
return null;
#if NET_2_0
object o = fixed_buffer_cache [fi];
if (o == null) {
if (!fi.IsDefined (TypeManager.fixed_buffer_attr_type, false)) {
fixed_buffer_cache.Add (fi, FALSE);
return null;
}
IFixedBuffer iff = new FixedFieldExternal (fi);
fixed_buffer_cache.Add (fi, iff);
return iff;
}
if (o == FALSE)
return null;
return (IFixedBuffer)o;
#else
return null;
#endif
}
public static void VerifyModulesClsCompliance ()
{
Module[] modules = RootNamespace.Global.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;
}
}
}
public static Type GetImportedIgnoreCaseClsType (string name)
{
foreach (Assembly a in RootNamespace.Global.Assemblies) {
Type t = a.GetType (name, false, true);
if (t == null)
continue;
if (IsClsCompliant (t))
return t;
}
return null;
}
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)
{
type = TypeManager.DropGenericTypeArguments (type);
DeclSpace ds = TypeManager.LookupDeclSpace (type);
if (ds != null) {
return ds.IsClsComplianceRequired ();
}
if (TypeManager.IsGenericParameter (type))
return true;
object[] CompliantAttribute = type.GetCustomAttributes (TypeManager.cls_compliant_attribute_type, false);
if (CompliantAttribute.Length == 0)
return IsClsCompliant (type.Assembly);
return ((CLSCompliantAttribute)CompliantAttribute[0]).IsCompliant;
}
// Registers the core type as we assume that they will never be obsolete which
// makes things easier for bootstrap and faster (we don't need to query Obsolete attribute).
public static void RegisterNonObsoleteType (Type type)
{
analyzed_types_obsolete [type] = FALSE;
}
///
/// Returns instance of ObsoleteAttribute when type is obsolete
///
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 (TypeManager.HasElementType (type)) {
result = GetObsoleteAttribute (TypeManager.GetElementType (type));
} else if (TypeManager.IsGenericParameter (type) || TypeManager.IsGenericType (type))
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 ();
}
}
// Cannot use .Add because of corlib bootstrap
analyzed_types_obsolete [type] = result == null ? FALSE : result;
return result;
}
///
/// Returns instance of ObsoleteAttribute when method is obsolete
///
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;
MemberInfo mi = TypeManager.GetPropertyFromAccessor (mb);
if (mi != null)
return GetMemberObsoleteAttribute (mi);
mi = TypeManager.GetEventFromAccessor (mb);
if (mi != null)
return GetMemberObsoleteAttribute (mi);
return GetMemberObsoleteAttribute (mb);
}
///
/// Returns instance of ObsoleteAttribute when member is obsolete
///
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) || TypeManager.IsGenericType (mi.DeclaringType))
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;
}
///
/// Common method for Obsolete error/warning reporting.
///
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, 1, loc, "`{0}' is obsolete", member);
return;
}
Report.Warning (618, 2, loc, "`{0}' is obsolete: `{1}'", member, oa.Message);
}
public static bool IsConditionalMethodExcluded (MethodBase mb)
{
mb = TypeManager.DropGenericMethodArguments (mb);
// TODO: Has to be fixed for partial methods
if ((mb is MethodBuilder) || (mb is ConstructorBuilder))
return false;
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;
}
///
/// Analyzes class whether it has attribute which has ConditionalAttribute
/// and its condition is not defined.
///
public static bool IsAttributeExcluded (Type type)
{
if (!type.IsClass)
return false;
Class class_decl = TypeManager.LookupDeclSpace (type) as Class;
// TODO: add caching
// TODO: merge all Type bases attribute caching to one cache to save memory
if (class_decl == null) {
object[] attributes = type.GetCustomAttributes (TypeManager.conditional_attribute_type, false);
foreach (ConditionalAttribute ca in attributes) {
if (RootContext.AllDefines.Contains (ca.ConditionString))
return false;
}
return attributes.Length > 0;
}
return class_decl.IsExcluded ();
}
public static Type GetCoClassAttribute (Type type)
{
TypeContainer tc = TypeManager.LookupInterface (type);
if (tc == null) {
object[] o = type.GetCustomAttributes (TypeManager.coclass_attr_type, false);
if (o.Length < 1)
return null;
return ((System.Runtime.InteropServices.CoClassAttribute)o[0]).CoClass;
}
if (tc.OptAttributes == null)
return null;
Attribute a = tc.OptAttributes.Search (TypeManager.coclass_attr_type);
if (a == null)
return null;
return a.GetCoClassAttributeValue ();
}
}
}