diff options
Diffstat (limited to 'mcs/class/corlib/System/MulticastDelegate.cs')
| -rw-r--r-- | mcs/class/corlib/System/MulticastDelegate.cs | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/mcs/class/corlib/System/MulticastDelegate.cs b/mcs/class/corlib/System/MulticastDelegate.cs deleted file mode 100644 index b7ececfd737..00000000000 --- a/mcs/class/corlib/System/MulticastDelegate.cs +++ /dev/null @@ -1,242 +0,0 @@ -// -// System.MultiCastDelegate.cs -// -// Author: -// Miguel de Icaza (miguel@ximian.com) -// Daniel Stodden (stodden@in.tum.de) -// -// (C) Ximian, Inc. http://www.ximian.com -// -// TODO: Remove Missing -// - -using System.Globalization; - -namespace System { - - public abstract class MulticastDelegate : Delegate - { - private MulticastDelegate prev; - private MulticastDelegate kpm_next; - - protected MulticastDelegate (object target, string method) - : base (target, method) - { - prev = null; - } - - protected MulticastDelegate (Type target_type, string method) - : base (target_type, method) - { - prev = null; - } - -#if NOTYET - private MulticastDelegate (Type target_type, string method, Delegate [] list) - : base (target_type, method) - { - invocation_list = (Delegate[])list.Clone (); - } -#endif - -#if NOTYET - public MethodInfo Method { - get { - return null; - } - } -#endif - - public override object DynamicInvokeImpl( object[] args ) - { - if ( prev != null ) - prev.DynamicInvokeImpl( args ); - - return base.DynamicInvokeImpl( args ); - } - - // <remarks> - // Equals: two multicast delegates are equal if their base is equal - // and their invocations list is equal. - // </remarks> - public override bool Equals (object o) - { - if ( ! base.Equals( o ) ) - return false; - - MulticastDelegate d = (MulticastDelegate) o; - - if ( this.prev == null ) { - if ( d.prev == null ) - return true; - else - return false; - } - - return this.prev.Equals( d.prev ); - } - - // - // FIXME: This could use some improvements. - // - public override int GetHashCode () - { - return base.GetHashCode (); - } - - // <summary> - // Return, in order of invocation, the invocation list - // of a MulticastDelegate - // </summary> - public override Delegate[] GetInvocationList() - { - throw new NotImplementedException(); - } - - // <summary> - // Combines this MulticastDelegate with the (Multicast)Delegate `follow'. - // This does _not_ combine with Delegates. ECMA states the whole delegate - // thing should have better been a simple System.Delegate class. - // Compiler generated delegates are always MulticastDelegates. - // </summary> - protected override Delegate CombineImpl( Delegate follow ) - { - MulticastDelegate combined, orig, clone; - - if ( this.GetType() != follow.GetType() ) - throw new ArgumentException( Locale.GetText("Incompatible Delegate Types") ); - - combined = (MulticastDelegate)follow.Clone(); - - for ( clone = combined, orig = ((MulticastDelegate)follow).prev; - orig != null; orig = orig.prev ) { - - clone.prev = (MulticastDelegate)orig.Clone(); - clone = clone.prev; - } - - clone.prev = (MulticastDelegate)this.Clone(); - - for ( clone = clone.prev, orig = this.prev; - orig != null; orig = orig.prev ) { - - clone.prev = (MulticastDelegate)orig.Clone(); - clone = clone.prev; - } - - return combined; - } - - private bool BaseEquals( MulticastDelegate value ) - { - return base.Equals( value ); - } - - /* - * Perform a slightly crippled version of - * Knuth-Pratt-Morris over MulticastDelegate chains. - * Border values are set as pointers in kpm_next; - * Generally, KPM border arrays are length n+1 for - * strings of n. This one works with length n at the - * expense of a few additional comparisions. - */ - private static MulticastDelegate KPM( MulticastDelegate needle, - MulticastDelegate haystack, - out MulticastDelegate tail ) - { - MulticastDelegate nx, hx; - - // preprocess - hx = needle; - nx = needle.kpm_next = null; - do { - while ( nx != null && !nx.BaseEquals(hx) ) - nx = nx.kpm_next; - - hx = hx.prev; - if (hx == null) - break; - - nx = nx == null ? needle : nx.prev; - if ( hx.BaseEquals(nx) ) - hx.kpm_next = nx.kpm_next; - else - hx.kpm_next = nx; - - } while (true); - - // match - MulticastDelegate match = haystack; - nx = needle; - hx = haystack; - do { - while ( nx != null && !nx.BaseEquals(hx) ) { - nx = nx.kpm_next; - match = match.prev; - } - - nx = nx == null ? needle : nx.prev; - if ( nx == null ) { - // bingo - tail = hx.prev; - return match; - } - - hx = hx.prev; - } while ( hx != null ); - - tail = null; - return null; - } - - protected override Delegate RemoveImpl( Delegate value ) - { - if ( value == null ) - return this; - - // match this with value - MulticastDelegate head, tail; - head = KPM((MulticastDelegate)value, this, out tail); - if ( head == null ) - return this; - - // duplicate chain without head..tail - MulticastDelegate prev = null, retval = null, orig; - for ( orig = this; (object)orig != (object)head; orig = orig.prev ) { - MulticastDelegate clone = (MulticastDelegate)orig.Clone(); - if ( prev != null ) - prev.prev = clone; - else - retval = clone; - prev = clone; - } - for ( orig = tail; (object)orig != null; orig = orig.prev ) { - MulticastDelegate clone = (MulticastDelegate)orig.Clone(); - if ( prev != null ) - prev.prev = clone; - else - retval = clone; - prev = clone; - } - if ( prev != null ) - prev.prev = null; - - return retval; - } - - public static bool operator == (MulticastDelegate a, MulticastDelegate b) - { - if ((object)a == null) { - if ((object)b == null) - return true; - return false; - } - return a.Equals (b); - } - - public static bool operator != (MulticastDelegate a, MulticastDelegate b) - { - return !(a == b); - } - } -} |