namespace Mono.CSharp {
- public class EnumMember : Const {
- protected readonly Enum ParentEnum;
- protected readonly Expression ValueExpr;
- readonly EnumMember prev_member;
-
- 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.ParentEnum = parent;
- this.ValueExpr = expr;
- this.prev_member = prev_member;
- }
-
- protected class EnumTypeExpr : TypeExpr
+ public class EnumMember : Const
+ {
+ class EnumTypeExpr : TypeExpr
{
- public readonly Enum Enum;
-
- public EnumTypeExpr (Enum e)
- {
- this.Enum = e;
- }
-
protected override TypeExpr DoResolveAsTypeStep (IMemberContext ec)
{
- type = Enum.CurrentType != null ? Enum.CurrentType : Enum.TypeBuilder;
+ type = ec.CurrentType;
return this;
}
}
}
- static bool IsValidEnumType (Type t)
+ public EnumMember (Enum parent, MemberName name, Attributes attrs)
+ : base (parent, new EnumTypeExpr (), Modifiers.PUBLIC, name, attrs)
+ {
+ }
+
+ static bool IsValidEnumType (TypeSpec t)
{
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 ||
TypeManager.IsEnumType (t));
}
- public object Value {
- get { return ResolveValue () ? value.GetValue () : null; }
+ public override Constant ConvertInitializer (ResolveContext rc, Constant expr)
+ {
+ if (expr is EnumConstant)
+ expr = ((EnumConstant) expr).Child;
+
+ var underlying = ((Enum) Parent).UnderlyingType;
+ if (expr != null) {
+ expr = expr.ImplicitConversionRequired (rc, underlying, Location);
+ if (expr != null && !IsValidEnumType (expr.Type)) {
+ Enum.Error_1008 (Location, Report);
+ expr = null;
+ }
+ }
+
+ if (expr == null)
+ expr = New.Constantify (underlying);
+
+ return new EnumConstant (expr, MemberType).Resolve (rc);
}
public override bool Define ()
return false;
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);
+ FieldBuilder = Parent.TypeBuilder.DefineField (Name, MemberType.GetMetaInfo (), attr);
+ spec = new ConstSpec (Parent.Definition, this, MemberType, FieldBuilder, ModFlags, initializer);
+
+ Parent.MemberCache.AddMember (spec);
return true;
}
-
- protected override Constant DoResolveValue (ResolveContext ec)
+ }
+
+ /// <summary>
+ /// Enumeration container
+ /// </summary>
+ public class Enum : TypeContainer
+ {
+ //
+ // Implicit enum member initializer, used when no constant value is provided
+ //
+ class ImplicitInitializer : Expression
{
- if (ValueExpr != null) {
- Constant c = ValueExpr.ResolveAsConstant (ec, this);
- if (c == null)
- return null;
+ readonly EnumMember prev;
+ readonly EnumMember current;
- if (c is EnumConstant)
- c = ((EnumConstant)c).Child;
+ public ImplicitInitializer (EnumMember current, EnumMember prev)
+ {
+ this.current = current;
+ this.prev = prev;
+ }
- c = c.ImplicitConversionRequired (ec, ParentEnum.UnderlyingType, Location);
- if (c == null)
- return null;
+ public override Expression CreateExpressionTree (ResolveContext ec)
+ {
+ throw new NotSupportedException ("Missing Resolve call");
+ }
- if (!IsValidEnumType (c.Type)) {
- Enum.Error_1008 (Location, ec.Report);
- return null;
+ protected override Expression DoResolve (ResolveContext rc)
+ {
+ // We are the first member
+ if (prev == null) {
+ return New.Constantify (current.Parent.Definition).Resolve (rc);
}
- return new EnumConstant (c, MemberType).Resolve (ec);
- }
-
- if (prev_member == null)
- return new EnumConstant (New.Constantify (ParentEnum.UnderlyingType), MemberType).Resolve (ec);
+ var c = ((ConstSpec) prev.Spec).GetConstant (rc) as EnumConstant;
+ try {
+ return c.Increment ().Resolve (rc);
+ } catch (OverflowException) {
+ rc.Report.Error (543, current.Location,
+ "The enumerator value `{0}' is outside the range of enumerator underlying type `{1}'",
+ current.GetSignatureForError (), ((Enum) current.Parent).UnderlyingType.GetSignatureForError ());
- if (!prev_member.ResolveValue ())
- return null;
+ return New.Constantify (current.Parent.Definition).Resolve (rc);
+ }
+ }
- 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;
+ public override void Emit (EmitContext ec)
+ {
+ throw new NotSupportedException ("Missing Resolve call");
}
}
- }
- /// <summary>
- /// Enumeration container
- /// </summary>
- public class Enum : TypeContainer
- {
public static readonly string UnderlyingValueField = "value__";
- TypeExpr base_type;
-
const Modifiers AllowedModifiers =
Modifiers.NEW |
Modifiers.PUBLIC |
Modifiers.INTERNAL |
Modifiers.PRIVATE;
- public Enum (NamespaceEntry ns, DeclSpace parent, TypeExpr type,
+ public Enum (NamespaceEntry ns, DeclSpace parent, TypeExpression type,
Modifiers mod_flags, MemberName name, Attributes attrs)
- : base (ns, parent, name, attrs, Kind.Enum)
+ : base (ns, parent, name, attrs, MemberKind.Enum)
{
- this.base_type = type;
+ base_type_expr = type;
var accmods = IsTopLevel ? Modifiers.INTERNAL : Modifiers.PRIVATE;
ModFlags = ModifiersExtensions.Check (AllowedModifiers, mod_flags, accmods, Location, Report);
+ spec = new EnumSpec (null, this, null, null, ModFlags);
}
+ #region Properties
+
+ public override AttributeTargets AttributeTargets {
+ get {
+ return AttributeTargets.Enum;
+ }
+ }
+
+ public TypeExpr BaseTypeExpression {
+ get {
+ return base_type_expr;
+ }
+ }
+
+ protected override TypeAttributes TypeAttr {
+ get {
+ return ModifiersExtensions.TypeAttr (ModFlags, IsTopLevel) |
+ TypeAttributes.Class | TypeAttributes.Sealed | base.TypeAttr;
+ }
+ }
+
+ public TypeSpec UnderlyingType {
+ get {
+ return ((EnumSpec) spec).UnderlyingType;
+ }
+ }
+
+ #endregion
+
public void AddEnumMember (EnumMember em)
{
if (em.Name == UnderlyingValueField) {
public static void Error_1008 (Location loc, Report Report)
{
- Report.Error (1008, loc, "Type byte, sbyte, short, ushort, " +
- "int, uint, long or ulong expected");
+ Report.Error (1008, loc,
+ "Type byte, sbyte, short, ushort, int, uint, long or ulong expected");
}
protected override bool DefineNestedTypes ()
{
- if (!base.DefineNestedTypes ())
- return false;
+ ((EnumSpec) spec).UnderlyingType = base_type_expr == null ? TypeManager.int32_type : base_type_expr.Type;
+
+ TypeBuilder.DefineField (UnderlyingValueField, UnderlyingType.GetMetaInfo (),
+ FieldAttributes.Public | FieldAttributes.SpecialName | FieldAttributes.RTSpecialName);
- //
- // Call MapToInternalType for corlib
- //
- TypeBuilder.DefineField (UnderlyingValueField, UnderlyingType,
- FieldAttributes.Public | FieldAttributes.SpecialName
- | FieldAttributes.RTSpecialName);
+ if (!RootContext.StdLib)
+ RootContext.hack_corlib_enums.Add (this);
return true;
}
protected override bool DoDefineMembers ()
{
- member_cache = new MemberCache (TypeManager.enum_type, this);
- DefineContainerMembers (constants);
+ if (constants != null) {
+ for (int i = 0; i < constants.Count; ++i) {
+ EnumMember em = (EnumMember) constants [i];
+ if (em.Initializer == null) {
+ em.Initializer = new ImplicitInitializer (em, i == 0 ? null : (EnumMember) constants[i - 1]);
+ }
+
+ em.Define ();
+ }
+ }
+
return true;
}
return true;
}
- public Type UnderlyingType {
- get {
- return base_type.Type;
- }
+ protected override TypeExpr[] ResolveBaseTypes (out TypeExpr base_class)
+ {
+ base_type = TypeManager.enum_type;
+ base_class = base_type_expr;
+ return null;
}
protected override bool VerifyClsCompliance ()
return true;
}
+ }
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Enum;
- }
+ class EnumSpec : TypeSpec
+ {
+ TypeSpec underlying;
+
+ public EnumSpec (TypeSpec declaringType, ITypeDefinition definition, TypeSpec underlyingType, Type info, Modifiers modifiers)
+ : base (MemberKind.Enum, declaringType, definition, info, modifiers | Modifiers.SEALED)
+ {
+ this.underlying = underlyingType;
}
- protected override TypeAttributes TypeAttr {
+ public TypeSpec UnderlyingType {
get {
- return ModifiersExtensions.TypeAttr (ModFlags, IsTopLevel) |
- TypeAttributes.Class | TypeAttributes.Sealed | base.TypeAttr;
+ return underlying;
}
+ set {
+ if (underlying != null)
+ throw new InternalErrorException ("UnderlyingType reset");
+
+ underlying = value;
+ }
+ }
+
+ public static TypeSpec GetUnderlyingType (TypeSpec t)
+ {
+ return ((EnumSpec) t.GetDefinition ()).UnderlyingType;
}
}
}
projects / mono.git / blobdiff