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enhance sync to work with nested syncable types, and properties

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This commit is contained in:
Chris Forbes
2010-06-15 01:15:41 +12:00
parent 06a78cd73d
commit 0e0a8802ab
1 changed files with 71 additions and 48 deletions
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119
OpenRA.Game/Sync.cs
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@@ -37,62 +37,80 @@ namespace OpenRA
return hashFuncCache[ obj.GetType() ]( obj );
}
public static Func<object,int> GenerateHashFunc( Type t )
static void EmitSyncOpcodes(Type type, ILGenerator il)
{
var d = new DynamicMethod( "hash_{0}".F( t.Name ), typeof( int ), new Type[] { typeof( object ) }, t );
if (type == typeof(int))
{
il.Emit(OpCodes.Xor);
}
else if (type == typeof(bool))
{
var l = il.DefineLabel();
il.Emit(OpCodes.Ldc_I4, 0xaaa);
il.Emit(OpCodes.Brtrue, l);
il.Emit(OpCodes.Pop);
il.Emit(OpCodes.Ldc_I4, 0x555);
il.MarkLabel(l);
il.Emit(OpCodes.Xor);
}
else if (type == typeof(int2))
{
il.EmitCall(OpCodes.Call, ((Func<int2, int>)hash_int2).Method, null);
il.Emit(OpCodes.Xor);
}
else if (type == typeof(TypeDictionary))
{
il.EmitCall(OpCodes.Call, ((Func<TypeDictionary, int>)hash_tdict).Method, null);
il.Emit(OpCodes.Xor);
}
else if (type == typeof(Actor))
{
il.EmitCall(OpCodes.Call, ((Func<Actor, int>)hash_actor).Method, null);
il.Emit(OpCodes.Xor);
}
else if (type == typeof(Player))
{
il.EmitCall(OpCodes.Call, ((Func<Player, int>)hash_player).Method, null);
il.Emit(OpCodes.Xor);
}
else if (type.HasAttribute<SyncAttribute>())
{
il.EmitCall(OpCodes.Call, ((Func<object, int>)CalculateSyncHash).Method, null);
il.Emit(OpCodes.Xor);
}
else
throw new NotImplementedException("SyncAttribute on member of unhashable type: {0}".F(type.FullName));
}
public static Func<object, int> GenerateHashFunc(Type t)
{
var d = new DynamicMethod("hash_{0}".F(t.Name), typeof(int), new Type[] { typeof(object) }, t);
var il = d.GetILGenerator();
var this_ = il.DeclareLocal( t ).LocalIndex;
il.Emit( OpCodes.Ldarg_0 );
il.Emit( OpCodes.Castclass, t );
il.Emit( OpCodes.Stloc, this_ );
il.Emit( OpCodes.Ldc_I4_0 );
var this_ = il.DeclareLocal(t).LocalIndex;
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Castclass, t);
il.Emit(OpCodes.Stloc, this_);
il.Emit(OpCodes.Ldc_I4_0);
const BindingFlags bf = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
foreach( var field in t.GetFields( bf ).Where( x => x.GetCustomAttributes( typeof( SyncAttribute ), true ).Length != 0 ) )
foreach (var field in t.GetFields(bf).Where(x => x.HasAttribute<SyncAttribute>()))
{
il.Emit( OpCodes.Ldloc, this_ );
il.Emit( OpCodes.Ldfld, field );
il.Emit(OpCodes.Ldloc, this_);
il.Emit(OpCodes.Ldfld, field);
if( field.FieldType == typeof( int ) )
{
il.Emit( OpCodes.Xor );
}
else if( field.FieldType == typeof( bool ) )
{
var l = il.DefineLabel();
il.Emit( OpCodes.Ldc_I4, 0xaaa );
il.Emit( OpCodes.Brtrue, l );
il.Emit( OpCodes.Pop );
il.Emit( OpCodes.Ldc_I4, 0x555 );
il.MarkLabel( l );
il.Emit( OpCodes.Xor );
}
else if( field.FieldType == typeof( int2 ) )
{
il.EmitCall( OpCodes.Call, ( (Func<int2, int>)hash_int2 ).Method, null );
il.Emit( OpCodes.Xor );
}
else if( field.FieldType == typeof( TypeDictionary ) )
{
il.EmitCall( OpCodes.Call, ( (Func<TypeDictionary, int>)hash_tdict ).Method, null );
il.Emit( OpCodes.Xor );
}
else if( field.FieldType == typeof( Actor ) )
{
il.EmitCall( OpCodes.Call, ( (Func<Actor, int>)hash_actor ).Method, null );
il.Emit( OpCodes.Xor );
}
else if( field.FieldType == typeof( Player ) )
{
il.EmitCall( OpCodes.Call, ( (Func<Player, int>)hash_player ).Method, null );
il.Emit( OpCodes.Xor );
}
else
throw new NotImplementedException( "SyncAttribute on unhashable field" );
EmitSyncOpcodes(field.FieldType, il);
}
il.Emit( OpCodes.Ret );
return (Func<object,int>)d.CreateDelegate( typeof( Func<object,int> ) );
foreach (var prop in t.GetProperties(bf).Where(x => x.HasAttribute<SyncAttribute>()))
{
il.Emit(OpCodes.Ldloc, this_);
il.EmitCall(OpCodes.Call, prop.GetGetMethod(), null);
EmitSyncOpcodes(prop.PropertyType, il);
}
il.Emit(OpCodes.Ret);
return (Func<object, int>)d.CreateDelegate(typeof(Func<object, int>));
}
public static int hash_int2( int2 i2 )
@@ -121,5 +139,10 @@ namespace OpenRA
return p.Index * 0x567;
return 0;
}
static bool HasAttribute<T>( this MemberInfo mi )
{
return mi.GetCustomAttributes(typeof(T), true).Length != 0;
}
}
}