// Ravi Pratap (ravi@ximian.com)
// Marek Safar (marek.safar@seznam.cz)
//
-// Licensed under the terms of the GNU GPL
+// Dual licensed under the terms of the MIT X11 or GNU GPL
//
-// (C) 2001 Ximian, Inc (http://www.ximian.com)
+// Copyright 2001 Ximian, Inc (http://www.ximian.com)
+// Copyright 2003-2003 Novell, Inc (http://www.novell.com)
//
using System;
namespace Mono.CSharp {
- class EnumMember: MemberCore {
- static string[] attribute_targets = new string [] { "field" };
+ public class EnumMember : Const {
+ protected readonly Enum ParentEnum;
+ protected readonly Expression ValueExpr;
+ readonly EnumMember prev_member;
- Enum parent_enum;
- public FieldBuilder builder;
- internal readonly Expression Type;
-
- public EnumMember (Enum parent_enum, Expression expr, string name, Location loc,
- Attributes attrs):
- base (null, new MemberName (name, loc), attrs)
+ public EnumMember (Enum parent, EnumMember prev_member, string name, Expression expr,
+ Attributes attrs, Location loc)
+ : base (parent, new EnumTypeExpr (parent), name, expr, Modifiers.PUBLIC,
+ attrs, loc)
{
- this.parent_enum = parent_enum;
- this.ModFlags = parent_enum.ModFlags;
- this.Type = expr;
+ this.ParentEnum = parent;
+ this.ValueExpr = expr;
+ this.prev_member = prev_member;
}
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb)
+ protected class EnumTypeExpr : TypeExpr
{
- if (a.Type == TypeManager.marshal_as_attr_type) {
- UnmanagedMarshal marshal = a.GetMarshal (this);
- if (marshal != null) {
- builder.SetMarshal (marshal);
- }
- return;
- }
+ public readonly Enum Enum;
- if (a.Type.IsSubclassOf (TypeManager.security_attr_type)) {
- a.Error_InvalidSecurityParent ();
- return;
+ public EnumTypeExpr (Enum e)
+ {
+ this.Enum = e;
}
- builder.SetCustomAttribute (cb);
- }
+ protected override TypeExpr DoResolveAsTypeStep (IResolveContext ec)
+ {
+ type = Enum.CurrentType != null ? Enum.CurrentType : Enum.TypeBuilder;
+ return this;
+ }
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Field;
+ public override TypeExpr ResolveAsTypeTerminal (IResolveContext ec, bool silent)
+ {
+ return DoResolveAsTypeStep (ec);
}
}
- public void DefineMember (TypeBuilder tb)
+ static bool IsValidEnumType (Type t)
{
- FieldAttributes attr = FieldAttributes.Public | FieldAttributes.Static
- | FieldAttributes.Literal;
-
- builder = tb.DefineField (Name, tb, attr);
+ return (t == TypeManager.int32_type || t == TypeManager.uint32_type || t == TypeManager.int64_type ||
+ t == TypeManager.byte_type || t == TypeManager.sbyte_type || t == TypeManager.short_type ||
+ t == TypeManager.ushort_type || t == TypeManager.uint64_type || t == TypeManager.char_type ||
+ t.IsEnum);
}
- public override bool Define ()
- {
- throw new NotImplementedException ();
+ public object Value {
+ get { return ResolveValue () ? value.GetValue () : null; }
}
- public void Emit (EmitContext ec)
+ public override bool Define ()
{
- if (OptAttributes != null)
- OptAttributes.Emit (ec, this);
+ if (!ResolveMemberType ())
+ return false;
- Emit ();
+ const FieldAttributes attr = FieldAttributes.Public | FieldAttributes.Static | FieldAttributes.Literal;
+ FieldBuilder = Parent.TypeBuilder.DefineField (Name, MemberType, attr);
+ Parent.MemberCache.AddMember (FieldBuilder, this);
+ TypeManager.RegisterConstant (FieldBuilder, this);
+ return true;
}
-
- public override string GetSignatureForError()
+
+ protected override Constant DoResolveValue (EmitContext ec)
{
- return String.Concat (parent_enum.GetSignatureForError (), '.', base.GetSignatureForError ());
- }
+ if (ValueExpr != null) {
+ Constant c = ValueExpr.ResolveAsConstant (ec, this);
+ if (c == null)
+ return null;
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
+ if (c is EnumConstant)
+ c = ((EnumConstant)c).Child;
+
+ c = c.ImplicitConversionRequired (ec, ParentEnum.UnderlyingType, Location);
+ if (c == null)
+ return null;
+
+ if (!IsValidEnumType (c.Type)) {
+ Enum.Error_1008 (Location);
+ return null;
+ }
+
+ return new EnumConstant (c, MemberType);
}
- }
- protected override bool VerifyClsCompliance(DeclSpace ds)
- {
- // Because parent is TypeContainer and we have only DeclSpace parent.
- // Parameter replacing is required
- return base.VerifyClsCompliance (parent_enum);
- }
+ if (prev_member == null)
+ return new EnumConstant (
+ New.Constantify (ParentEnum.UnderlyingType), MemberType);
- // There is no base type
- protected override void VerifyObsoleteAttribute()
- {
- }
+ if (!prev_member.ResolveValue ())
+ return null;
- public override string DocCommentHeader {
- get { return "F:"; }
+ try {
+ return (EnumConstant) prev_member.value.Increment ();
+ } catch (OverflowException) {
+ Report.Error (543, Location, "The enumerator value `{0}' is too " +
+ "large to fit in its type `{1}'", GetSignatureForError (),
+ TypeManager.CSharpName (ParentEnum.UnderlyingType));
+ return null;
+ }
}
}
/// <summary>
/// Enumeration container
/// </summary>
- public class Enum : DeclSpace {
- public ArrayList ordered_enums;
-
- public Expression BaseType;
-
- public Type UnderlyingType;
-
- Hashtable member_to_location;
-
- //
- // This is for members that have been defined
- //
- Hashtable member_to_value;
-
- //
- // This is used to mark members we're currently defining
- //
- Hashtable in_transit;
-
- ArrayList field_builders;
-
- public const int AllowedModifiers =
+ public class Enum : TypeContainer
+ {
+ public static readonly string UnderlyingValueField = "value__";
+
+ TypeExpr base_type;
+
+ const int AllowedModifiers =
Modifiers.NEW |
Modifiers.PUBLIC |
Modifiers.PROTECTED |
Modifiers.INTERNAL |
Modifiers.PRIVATE;
- public Enum (NamespaceEntry ns, TypeContainer parent, Expression type,
+ public Enum (NamespaceEntry ns, DeclSpace parent, TypeExpr type,
int mod_flags, MemberName name, Attributes attrs)
- : base (ns, parent, name, attrs)
+ : base (ns, parent, name, attrs, Kind.Enum)
{
- this.BaseType = type;
- ModFlags = Modifiers.Check (AllowedModifiers, mod_flags,
- IsTopLevel ? Modifiers.INTERNAL : Modifiers.PRIVATE, name.Location);
-
- ordered_enums = new ArrayList ();
- member_to_location = new Hashtable ();
- member_to_value = new Hashtable ();
- in_transit = new Hashtable ();
- field_builders = new ArrayList ();
+ this.base_type = type;
+ int accmods = IsTopLevel ? Modifiers.INTERNAL : Modifiers.PRIVATE;
+ ModFlags = Modifiers.Check (AllowedModifiers, mod_flags, accmods, Location);
}
- /// <summary>
- /// Adds @name to the enumeration space, with @expr
- /// being its definition.
- /// </summary>
- public void AddEnumMember (string name, Expression expr, Location loc, Attributes opt_attrs, string documentation)
+ public void AddEnumMember (EnumMember em)
{
- if (name == "value__") {
- Report.Error (76, loc, "An item in an enumeration cannot have an identifier `value__'");
+ if (em.Name == UnderlyingValueField) {
+ Report.Error (76, em.Location, "An item in an enumeration cannot have an identifier `{0}'",
+ UnderlyingValueField);
return;
}
- EnumMember em = new EnumMember (this, expr, name, loc, opt_attrs);
- em.DocComment = documentation;
- if (!AddToContainer (em, name))
- return;
-
-
- // TODO: can be almost deleted
- ordered_enums.Add (name);
- member_to_location.Add (name, loc);
+ AddConstant (em);
}
-
- public override TypeBuilder DefineType ()
- {
- if (TypeBuilder != null)
- return TypeBuilder;
-
- ec = new EmitContext (this, this, Location, null, null, ModFlags, false);
- ec.InEnumContext = true;
-
- if (!(BaseType is TypeLookupExpression)) {
- Report.Error (1008, Location,
- "Type byte, sbyte, short, ushort, int, uint, long or ulong expected");
- return null;
- }
- TypeExpr ute = ResolveBaseTypeExpr (BaseType, false, Location);
- UnderlyingType = ute.Type;
-
- if (UnderlyingType != TypeManager.int32_type &&
- UnderlyingType != TypeManager.uint32_type &&
- UnderlyingType != TypeManager.int64_type &&
- UnderlyingType != TypeManager.uint64_type &&
- UnderlyingType != TypeManager.short_type &&
- UnderlyingType != TypeManager.ushort_type &&
- UnderlyingType != TypeManager.byte_type &&
- UnderlyingType != TypeManager.sbyte_type) {
- Report.Error (1008, Location,
- "Type byte, sbyte, short, ushort, int, uint, long or ulong expected");
- return null;
- }
-
- if (IsTopLevel) {
- if (TypeManager.NamespaceClash (Name, Location))
- return null;
-
- ModuleBuilder builder = CodeGen.Module.Builder;
-
- TypeBuilder = builder.DefineType (Name, TypeAttr, TypeManager.enum_type);
- } else {
- TypeBuilder builder = Parent.TypeBuilder;
-
- TypeBuilder = builder.DefineNestedType (
- Basename, TypeAttr, TypeManager.enum_type);
- }
-
- ec.ContainerType = TypeBuilder;
-
- //
- // Call MapToInternalType for corlib
- //
- TypeBuilder.DefineField ("value__", UnderlyingType,
- FieldAttributes.Public | FieldAttributes.SpecialName
- | FieldAttributes.RTSpecialName);
-
- TypeManager.AddUserType (Name, this);
-
- return TypeBuilder;
- }
-
- bool IsValidEnumConstant (Expression e)
- {
- if (!(e is Constant))
- return false;
-
- if (e is IntConstant || e is UIntConstant || e is LongConstant ||
- e is ByteConstant || e is SByteConstant || e is ShortConstant ||
- e is UShortConstant || e is ULongConstant || e is EnumConstant ||
- e is CharConstant)
- return true;
- else
- return false;
- }
-
- object GetNextDefaultValue (object default_value)
+ public static void Error_1008 (Location loc)
{
- if (UnderlyingType == TypeManager.int32_type) {
- int i = (int) default_value;
-
- if (i < System.Int32.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.uint32_type) {
- uint i = (uint) default_value;
-
- if (i < System.UInt32.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.int64_type) {
- long i = (long) default_value;
-
- if (i < System.Int64.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.uint64_type) {
- ulong i = (ulong) default_value;
-
- if (i < System.UInt64.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.short_type) {
- short i = (short) default_value;
-
- if (i < System.Int16.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.ushort_type) {
- ushort i = (ushort) default_value;
-
- if (i < System.UInt16.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.byte_type) {
- byte i = (byte) default_value;
-
- if (i < System.Byte.MaxValue)
- return ++i;
- else
- return null;
- } else if (UnderlyingType == TypeManager.sbyte_type) {
- sbyte i = (sbyte) default_value;
-
- if (i < System.SByte.MaxValue)
- return ++i;
- else
- return null;
- }
-
- return null;
+ Report.Error (1008, loc, "Type byte, sbyte, short, ushort, " +
+ "int, uint, long or ulong expected");
}
- /// <summary>
- /// Determines if a standard implicit conversion exists from
- /// expr_type to target_type
- /// </summary>
- public static bool ImplicitConversionExists (Type expr_type, Type target_type)
+ protected override bool DefineNestedTypes ()
{
- expr_type = TypeManager.TypeToCoreType (expr_type);
-
- if (expr_type == TypeManager.void_type)
+ if (!base.DefineNestedTypes ())
return false;
-
- if (expr_type == target_type)
- return true;
-
- // First numeric conversions
-
- if (expr_type == TypeManager.sbyte_type){
- //
- // From sbyte to short, int, long, float, double.
- //
- if ((target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.short_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.byte_type){
- //
- // From byte to short, ushort, int, uint, long, ulong, float, double
- //
- if ((target_type == TypeManager.short_type) ||
- (target_type == TypeManager.ushort_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.short_type){
- //
- // From short to int, long, float, double
- //
- if ((target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.ushort_type){
- //
- // From ushort to int, uint, long, ulong, float, double
- //
- if ((target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.int32_type){
- //
- // From int to long, float, double
- //
- if ((target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.uint32_type){
- //
- // From uint to long, ulong, float, double
- //
- if ((target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if ((expr_type == TypeManager.uint64_type) ||
- (expr_type == TypeManager.int64_type)) {
- //
- // From long/ulong to float, double
- //
- if ((target_type == TypeManager.double_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.char_type){
- //
- // From char to ushort, int, uint, long, ulong, float, double
- //
- if ((target_type == TypeManager.ushort_type) ||
- (target_type == TypeManager.int32_type) ||
- (target_type == TypeManager.uint32_type) ||
- (target_type == TypeManager.uint64_type) ||
- (target_type == TypeManager.int64_type) ||
- (target_type == TypeManager.float_type) ||
- (target_type == TypeManager.double_type) ||
- (target_type == TypeManager.decimal_type))
- return true;
-
- } else if (expr_type == TypeManager.float_type){
- //
- // float to double
- //
- if (target_type == TypeManager.double_type)
- return true;
- }
-
- return false;
- }
-
- /// <summary>
- /// This is used to lookup the value of an enum member. If the member is undefined,
- /// it attempts to define it and return its value
- /// </summary>
- public object LookupEnumValue (string name, Location loc)
- {
- if (ec == null)
- Report.Error (-1, loc, "Enum.LookupEnumValue () called too soon");
-
- object default_value = null;
- Constant c = null;
-
- default_value = member_to_value [name];
-
- if (default_value != null)
- return default_value;
//
- // This may happen if we're calling a method in System.Enum, for instance
- // Enum.IsDefined().
- //
- if (!defined_names.Contains (name))
- return null;
-
- if (in_transit.Contains (name)) {
- Report.Error (110, loc, "The evaluation of the constant value for `" +
- Name + "." + name + "' involves a circular definition.");
- return null;
- }
-
- //
- // So if the above doesn't happen, we have a member that is undefined
- // We now proceed to define it
+ // Call MapToInternalType for corlib
//
- Expression val = this [name];
-
- if (val == null) {
-
- int idx = ordered_enums.IndexOf (name);
-
- if (idx == 0)
- default_value = 0;
- else {
- for (int i = 0; i < idx; ++i) {
- string n = (string) ordered_enums [i];
- Location m_loc = (Mono.CSharp.Location)
- member_to_location [n];
- in_transit.Add (name, true);
- default_value = LookupEnumValue (n, m_loc);
- in_transit.Remove (name);
- if (default_value == null)
- return null;
- }
-
- default_value = GetNextDefaultValue (default_value);
- }
-
- } else {
- in_transit.Add (name, true);
- val = val.Resolve (EmitContext);
- in_transit.Remove (name);
-
- if (val == null)
- return null;
-
- if (!IsValidEnumConstant (val)) {
- Report.Error (1008, loc,
- "Type byte, sbyte, short, ushort, int, uint, long or ulong expected");
- return null;
- }
-
- c = (Constant) val;
- default_value = c.GetValue ();
-
- if (default_value == null) {
- c.Error_ConstantValueCannotBeConverted (loc, UnderlyingType);
- return null;
- }
-
- if (val is EnumConstant){
- Type etype = TypeManager.EnumToUnderlying (c.Type);
-
- if (!ImplicitConversionExists (etype, UnderlyingType)){
- Convert.Error_CannotImplicitConversion (
- loc, c.Type, UnderlyingType);
- return null;
- }
- }
- }
-
- EnumMember em = (EnumMember) defined_names [name];
- em.DefineMember (TypeBuilder);
-
- bool fail;
- default_value = TypeManager.ChangeType (default_value, UnderlyingType, out fail);
- if (fail){
- c.Error_ConstantValueCannotBeConverted (loc, UnderlyingType);
- return null;
- }
-
- em.builder.SetConstant (default_value);
- field_builders.Add (em.builder);
- member_to_value [name] = default_value;
-
- if (!TypeManager.RegisterFieldValue (em.builder, default_value))
- return null;
+ TypeBuilder.DefineField (UnderlyingValueField, UnderlyingType,
+ FieldAttributes.Public | FieldAttributes.SpecialName
+ | FieldAttributes.RTSpecialName);
- return default_value;
+ return true;
}
-
+
public override bool Define ()
{
- //
- // If there was an error during DefineEnum, return
- //
- if (TypeBuilder == null)
- return false;
-
- if (ec == null)
- throw new InternalErrorException ("Enum.Define () called too soon");
-
- object default_value = 0;
-
-
- foreach (string name in ordered_enums) {
- //
- // Have we already been defined, thanks to some cross-referencing ?
- //
- if (member_to_value.Contains (name))
- continue;
-
- Location loc = (Mono.CSharp.Location) member_to_location [name];
-
- if (this [name] != null) {
- default_value = LookupEnumValue (name, loc);
-
- if (default_value == null)
- return true;
- } else {
- EnumMember em = (EnumMember) defined_names [name];
-
- em.DefineMember (TypeBuilder);
- FieldBuilder fb = em.builder;
-
- if (default_value == null) {
- Report.Error (543, loc, "The enumerator value `{0}.{1}' is too large to fit in its type `{2}'",
- GetSignatureForError (), name, TypeManager.CSharpName (this.UnderlyingType));
- return false;
- }
-
- bool fail;
- default_value = TypeManager.ChangeType (default_value, UnderlyingType, out fail);
- if (fail){
- //TODO: really interested if can be reached
- throw new NotImplementedException ();
- }
-
- fb.SetConstant (default_value);
- field_builders.Add (fb);
- member_to_value [name] = default_value;
-
- if (!TypeManager.RegisterFieldValue (fb, default_value))
- return false;
- }
-
- default_value = GetNextDefaultValue (default_value);
- }
-
+ member_cache = new MemberCache (TypeManager.enum_type, this);
+ DefineContainerMembers (constants);
return true;
}
- public override void Emit ()
+ public override bool IsUnmanagedType ()
{
- if (OptAttributes != null) {
- OptAttributes.Emit (ec, this);
- }
+ return true;
+ }
- foreach (EnumMember em in defined_names.Values) {
- em.Emit (ec);
+ public Type UnderlyingType {
+ get {
+ return base_type.Type;
}
-
- base.Emit ();
}
-
- void VerifyClsName ()
- {
- HybridDictionary dict = new HybridDictionary (defined_names.Count, true);
- foreach (EnumMember em in defined_names.Values) {
- if (!em.IsClsCompliaceRequired (this))
- continue;
-
- try {
- dict.Add (em.Name, em);
- }
- catch (ArgumentException) {
- Report.SymbolRelatedToPreviousError (em);
- MemberCore col = (MemberCore)dict [em.Name];
- Report.Error (3005, col.Location, "Identifier `{0}' differing only in case is not CLS-compliant", col.GetSignatureForError ());
- }
- }
- }
- protected override bool VerifyClsCompliance (DeclSpace ds)
+ protected override bool VerifyClsCompliance ()
{
- if (!base.VerifyClsCompliance (ds))
+ if (!base.VerifyClsCompliance ())
return false;
- VerifyClsName ();
-
if (UnderlyingType == TypeManager.uint32_type ||
UnderlyingType == TypeManager.uint64_type ||
UnderlyingType == TypeManager.ushort_type) {
- Report.Error (3009, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (UnderlyingType));
+ Report.Warning (3009, 1, Location, "`{0}': base type `{1}' is not CLS-compliant", GetSignatureForError (), TypeManager.CSharpName (UnderlyingType));
}
return true;
- }
-
- //
- // IMemberFinder
- //
- public override MemberList FindMembers (MemberTypes mt, BindingFlags bf,
- MemberFilter filter, object criteria)
- {
- ArrayList members = new ArrayList ();
-
- if ((mt & MemberTypes.Field) != 0) {
- if (criteria is string && member_to_value [criteria] == null) {
- LookupEnumValue ((string) criteria, Location.Null);
- }
-
- foreach (FieldBuilder fb in field_builders)
- if (filter (fb, criteria) == true)
- members.Add (fb);
- }
-
- return new MemberList (members);
- }
-
- public override MemberCache MemberCache {
- get {
- return null;
- }
- }
-
- public ArrayList ValueNames {
- get {
- return ordered_enums;
- }
- }
-
- // indexer
- public Expression this [string name] {
- get {
- return ((EnumMember) defined_names [name]).Type;
- }
- }
+ }
public override AttributeTargets AttributeTargets {
get {
protected override TypeAttributes TypeAttr {
get {
return Modifiers.TypeAttr (ModFlags, IsTopLevel) |
- TypeAttributes.Class | TypeAttributes.Sealed |
- base.TypeAttr;
+ TypeAttributes.Class | TypeAttributes.Sealed | base.TypeAttr;
}
}
-
-
- protected override void VerifyObsoleteAttribute()
- {
- // UnderlyingType is never obsolete
- }
-
- //
- // Generates xml doc comments (if any), and if required,
- // handle warning report.
- //
- internal override void GenerateDocComment (DeclSpace ds)
- {
- DocUtil.GenerateEnumDocComment (this, ds);
- }
-
- //
- // Represents header string for documentation comment.
- //
- public override string DocCommentHeader {
- get { return "T:"; }
- }
}
}
projects / mono.git / blobdiff