//
-// modifiers.cs: Modifier handling.
-//
+// modifiers.cs: Modifiers handling
+//
+// Authors: Miguel de Icaza (miguel@gnu.org)
+// Marek Safar (marek.safar@gmail.com)
+//
+// Dual licensed under the terms of the MIT X11 or GNU GPL
+//
+// Copyright 2001, 2002, 2003 Ximian, Inc (http://www.ximian.com)
+// Copyright 2004-2010 Novell, Inc
+//
+
using System;
+
+#if STATIC
+using IKVM.Reflection;
+#else
using System.Reflection;
+#endif
-namespace Mono.CSharp {
- public class Modifiers {
+namespace Mono.CSharp
+{
+ [Flags]
+ public enum Modifiers
+ {
+ PROTECTED = 0x0001,
+ PUBLIC = 0x0002,
+ PRIVATE = 0x0004,
+ INTERNAL = 0x0008,
+ NEW = 0x0010,
+ ABSTRACT = 0x0020,
+ SEALED = 0x0040,
+ STATIC = 0x0080,
+ READONLY = 0x0100,
+ VIRTUAL = 0x0200,
+ OVERRIDE = 0x0400,
+ EXTERN = 0x0800,
+ VOLATILE = 0x1000,
+ UNSAFE = 0x2000,
+ ASYNC = 0x4000,
+ TOP = 0x8000,
//
- // The ordering of the following 4 constants
- // has been carefully done.
+ // Compiler specific flags
//
- public const int PROTECTED = 0x0001;
- public const int PUBLIC = 0x0002;
- public const int PRIVATE = 0x0004;
- public const int INTERNAL = 0x0008;
- public const int NEW = 0x0010;
- public const int ABSTRACT = 0x0020;
- public const int SEALED = 0x0040;
- public const int STATIC = 0x0080;
- public const int READONLY = 0x0100;
- public const int VIRTUAL = 0x0200;
- public const int OVERRIDE = 0x0400;
- public const int EXTERN = 0x0800;
- public const int VOLATILE = 0x1000;
- public const int UNSAFE = 0x2000;
- private const int TOP = 0x2000;
-
- public const int PROPERTY_CUSTOM = 0x4000; // Custom property modifier
+ PROPERTY_CUSTOM = 0x10000,
- //
- // We use this internally to flag that the method contains an iterator
- //
- public const int METHOD_YIELDS = 0x8000;
- public const int METHOD_GENERIC = 0x10000;
- public const int PARTIAL = 0x20000;
- public const int DEFAULT_ACCESS_MODIFER = 0x40000;
- public const int METHOD_EXTENSION = 0x80000;
- public const int COMPILER_GENERATED = 0x100000;
- public const int BACKING_FIELD = 0x200000 | COMPILER_GENERATED;
-
- public const int Accessibility =
- PUBLIC | PROTECTED | INTERNAL | PRIVATE;
- public const int AllowedExplicitImplFlags =
- UNSAFE | EXTERN;
-
- static public string Name (int i)
+ PARTIAL = 0x20000,
+ DEFAULT_ACCESS_MODIFIER = 0x40000,
+ METHOD_EXTENSION = 0x80000,
+ COMPILER_GENERATED = 0x100000,
+ BACKING_FIELD = 0x200000,
+ DEBUGGER_HIDDEN = 0x400000,
+ DEBUGGER_STEP_THROUGH = 0x800000,
+ AutoProperty = 0x1000000,
+
+ AccessibilityMask = PUBLIC | PROTECTED | INTERNAL | PRIVATE,
+ AllowedExplicitImplFlags = UNSAFE | EXTERN,
+ }
+
+ static class ModifiersExtensions
+ {
+ public static string AccessibilityName (Modifiers mod)
+ {
+ switch (mod & Modifiers.AccessibilityMask) {
+ case Modifiers.PUBLIC:
+ return "public";
+ case Modifiers.PROTECTED:
+ return "protected";
+ case Modifiers.PROTECTED | Modifiers.INTERNAL:
+ return "protected internal";
+ case Modifiers.INTERNAL:
+ return "internal";
+ case Modifiers.PRIVATE:
+ return "private";
+ default:
+ throw new NotImplementedException (mod.ToString ());
+ }
+ }
+
+ static public string Name (Modifiers i)
{
string s = "";
s = "volatile"; break;
case Modifiers.UNSAFE:
s = "unsafe"; break;
+ case Modifiers.ASYNC:
+ s = "async"; break;
}
return s;
}
- public static string GetDescription (MethodAttributes ma)
+ //
+ // Used by custom property accessors to check whether @modA is more restrictive than @modB
+ //
+ public static bool IsRestrictedModifier (Modifiers modA, Modifiers modB)
{
- ma &= MethodAttributes.MemberAccessMask;
+ Modifiers flags = 0;
- if (ma == MethodAttributes.Assembly)
- return "internal";
-
- if (ma == MethodAttributes.Family)
- return "protected";
+ if ((modB & Modifiers.PUBLIC) != 0) {
+ flags = Modifiers.PROTECTED | Modifiers.INTERNAL | Modifiers.PRIVATE;
+ } else if ((modB & Modifiers.PROTECTED) != 0) {
+ if ((modB & Modifiers.INTERNAL) != 0)
+ flags = Modifiers.PROTECTED | Modifiers.INTERNAL;
- if (ma == MethodAttributes.Public)
- return "public";
+ flags |= Modifiers.PRIVATE;
+ } else if ((modB & Modifiers.INTERNAL) != 0)
+ flags = Modifiers.PRIVATE;
- if (ma == MethodAttributes.FamANDAssem)
- return "protected internal";
-
- if (ma == MethodAttributes.Private)
- return "private";
-
- throw new NotImplementedException (ma.ToString ());
+ return modB != modA && (modA & (~flags)) == 0;
}
- public static TypeAttributes TypeAttr (int mod_flags, bool is_toplevel)
+ public static TypeAttributes TypeAttr (Modifiers mod_flags, bool is_toplevel)
{
TypeAttributes t = 0;
if (is_toplevel){
- if ((mod_flags & PUBLIC) != 0)
- t |= TypeAttributes.Public;
- if ((mod_flags & PRIVATE) != 0)
- t |= TypeAttributes.NotPublic;
+ if ((mod_flags & Modifiers.PUBLIC) != 0)
+ t = TypeAttributes.Public;
+ else if ((mod_flags & Modifiers.PRIVATE) != 0)
+ t = TypeAttributes.NotPublic;
} else {
- if ((mod_flags & PUBLIC) != 0)
- t |= TypeAttributes.NestedPublic;
- if ((mod_flags & PRIVATE) != 0)
- t |= TypeAttributes.NestedPrivate;
- if ((mod_flags & PROTECTED) != 0 && (mod_flags & INTERNAL) != 0)
- t |= TypeAttributes.NestedFamORAssem;
- if ((mod_flags & PROTECTED) != 0)
- t |= TypeAttributes.NestedFamily;
- if ((mod_flags & INTERNAL) != 0)
- t |= TypeAttributes.NestedAssembly;
+ if ((mod_flags & Modifiers.PUBLIC) != 0)
+ t = TypeAttributes.NestedPublic;
+ else if ((mod_flags & Modifiers.PRIVATE) != 0)
+ t = TypeAttributes.NestedPrivate;
+ else if ((mod_flags & (Modifiers.PROTECTED | Modifiers.INTERNAL)) == (Modifiers.PROTECTED | Modifiers.INTERNAL))
+ t = TypeAttributes.NestedFamORAssem;
+ else if ((mod_flags & Modifiers.PROTECTED) != 0)
+ t = TypeAttributes.NestedFamily;
+ else if ((mod_flags & Modifiers.INTERNAL) != 0)
+ t = TypeAttributes.NestedAssembly;
}
-
- if ((mod_flags & SEALED) != 0)
+
+ if ((mod_flags & Modifiers.SEALED) != 0)
t |= TypeAttributes.Sealed;
- if ((mod_flags & ABSTRACT) != 0)
+ if ((mod_flags & Modifiers.ABSTRACT) != 0)
t |= TypeAttributes.Abstract;
return t;
}
- public static FieldAttributes FieldAttr (int mod_flags)
+ public static FieldAttributes FieldAttr (Modifiers mod_flags)
{
FieldAttributes fa = 0;
- if ((mod_flags & PUBLIC) != 0)
+ if ((mod_flags & Modifiers.PUBLIC) != 0)
fa |= FieldAttributes.Public;
- if ((mod_flags & PRIVATE) != 0)
+ if ((mod_flags & Modifiers.PRIVATE) != 0)
fa |= FieldAttributes.Private;
- if ((mod_flags & PROTECTED) != 0){
- if ((mod_flags & INTERNAL) != 0)
+ if ((mod_flags & Modifiers.PROTECTED) != 0) {
+ if ((mod_flags & Modifiers.INTERNAL) != 0)
fa |= FieldAttributes.FamORAssem;
else
fa |= FieldAttributes.Family;
} else {
- if ((mod_flags & INTERNAL) != 0)
+ if ((mod_flags & Modifiers.INTERNAL) != 0)
fa |= FieldAttributes.Assembly;
}
-
- if ((mod_flags & STATIC) != 0)
+
+ if ((mod_flags & Modifiers.STATIC) != 0)
fa |= FieldAttributes.Static;
- if ((mod_flags & READONLY) != 0)
+ if ((mod_flags & Modifiers.READONLY) != 0)
fa |= FieldAttributes.InitOnly;
return fa;
}
- public static MethodAttributes MethodAttr (int mod_flags)
+ public static MethodAttributes MethodAttr (Modifiers mod_flags)
{
MethodAttributes ma = MethodAttributes.HideBySig;
- if ((mod_flags & PUBLIC) != 0)
+ switch (mod_flags & Modifiers.AccessibilityMask) {
+ case Modifiers.PUBLIC:
ma |= MethodAttributes.Public;
- else if ((mod_flags & PRIVATE) != 0)
+ break;
+ case Modifiers.PRIVATE:
ma |= MethodAttributes.Private;
- else if ((mod_flags & PROTECTED) != 0){
- if ((mod_flags & INTERNAL) != 0)
- ma |= MethodAttributes.FamORAssem;
- else
- ma |= MethodAttributes.Family;
- } else {
- if ((mod_flags & INTERNAL) != 0)
- ma |= MethodAttributes.Assembly;
+ break;
+ case Modifiers.PROTECTED | Modifiers.INTERNAL:
+ ma |= MethodAttributes.FamORAssem;
+ break;
+ case Modifiers.PROTECTED:
+ ma |= MethodAttributes.Family;
+ break;
+ case Modifiers.INTERNAL:
+ ma |= MethodAttributes.Assembly;
+ break;
+ default:
+ throw new NotImplementedException (mod_flags.ToString ());
}
- if ((mod_flags & STATIC) != 0)
+ if ((mod_flags & Modifiers.STATIC) != 0)
ma |= MethodAttributes.Static;
- if ((mod_flags & ABSTRACT) != 0){
+ if ((mod_flags & Modifiers.ABSTRACT) != 0) {
ma |= MethodAttributes.Abstract | MethodAttributes.Virtual;
}
- if ((mod_flags & SEALED) != 0)
+ if ((mod_flags & Modifiers.SEALED) != 0)
ma |= MethodAttributes.Final;
- if ((mod_flags & VIRTUAL) != 0)
+ if ((mod_flags & Modifiers.VIRTUAL) != 0)
ma |= MethodAttributes.Virtual;
- if ((mod_flags & OVERRIDE) != 0)
+ if ((mod_flags & Modifiers.OVERRIDE) != 0) {
ma |= MethodAttributes.Virtual;
- else {
+ } else {
if ((ma & MethodAttributes.Virtual) != 0)
ma |= MethodAttributes.NewSlot;
}
// Returns the new mask. Side effect: reports any
// incorrect attributes.
// </summary>
- public static int Check (int allowed, int mod, int def_access, Location l)
+ public static Modifiers Check (Modifiers allowed, Modifiers mod, Modifiers def_access, Location l, Report Report)
{
- int invalid_flags = (~allowed) & (mod & (Modifiers.TOP - 1));
+ int invalid_flags = (~(int) allowed) & ((int) mod & ((int) Modifiers.TOP - 1));
int i;
if (invalid_flags == 0){
- int a = mod;
-
- if ((mod & Modifiers.UNSAFE) != 0){
- RootContext.CheckUnsafeOption (l);
- }
-
//
// If no accessibility bits provided
// then provide the defaults.
//
- if ((mod & Accessibility) == 0){
+ if ((mod & Modifiers.AccessibilityMask) == 0) {
mod |= def_access;
if (def_access != 0)
- mod |= DEFAULT_ACCESS_MODIFER;
+ mod |= Modifiers.DEFAULT_ACCESS_MODIFIER;
return mod;
}
- //
- // Make sure that no conflicting accessibility
- // bits have been set. Protected+Internal is
- // allowed, that is why they are placed on bits
- // 1 and 4 (so the shift 3 basically merges them)
- //
- a &= 15;
- a |= (a >> 3);
- a = ((a & 2) >> 1) + (a & 5);
- a = ((a & 4) >> 2) + (a & 3);
- if (a > 1)
- Report.Error (107, l, "More than one protection modifier specified");
-
return mod;
}
-
- for (i = 1; i <= TOP; i <<= 1){
+
+ for (i = 1; i < (int) Modifiers.TOP; i <<= 1) {
if ((i & invalid_flags) == 0)
continue;
- Error_InvalidModifier (l, Name (i));
+ Error_InvalidModifier ((Modifiers)i, l, Report);
}
return allowed & mod;
}
- public static void Error_InvalidModifier (Location l, string name)
+ static void Error_InvalidModifier (Modifiers mod, Location l, Report Report)
{
- Report.Error (106, l, "The modifier `" + name + "' is not valid for this item");
+ Report.Error (106, l, "The modifier `{0}' is not valid for this item",
+ Name (mod));
}
}
}
projects / mono.git / blobdiff