Merge pull request #201 from Bytom/v0.1

[bytom/vapor.git] / vendor / github.com / rjeczalik / notify / watchpoint.go

diff --git a/vendor/github.com/rjeczalik/notify/watchpoint.go b/vendor/github.com/rjeczalik/notify/watchpoint.go
deleted file mode 100644 (file)
index 5afc914..0000000
--- a/vendor/github.com/rjeczalik/notify/watchpoint.go
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright (c) 2014-2015 The Notify Authors. All rights reserved.
-// Use of this source code is governed by the MIT license that can be
-// found in the LICENSE file.
-
-package notify
-
-// EventDiff describes a change to an event set - EventDiff[0] is an old state,
-// while EventDiff[1] is a new state. If event set has not changed (old == new),
-// functions typically return the None value.
-type eventDiff [2]Event
-
-func (diff eventDiff) Event() Event {
-       return diff[1] &^ diff[0]
-}
-
-// Watchpoint
-//
-// The nil key holds total event set - logical sum for all registered events.
-// It speeds up computing EventDiff for Add method.
-//
-// The rec key holds an event set for a watchpoints created by RecursiveWatch
-// for a Watcher implementation which is not natively recursive.
-type watchpoint map[chan<- EventInfo]Event
-
-// None is an empty event diff, think null object.
-var none eventDiff
-
-// rec is just a placeholder
-var rec = func() (ch chan<- EventInfo) {
-       ch = make(chan<- EventInfo)
-       close(ch)
-       return
-}()
-
-func (wp watchpoint) dryAdd(ch chan<- EventInfo, e Event) eventDiff {
-       if e &^= internal; wp[ch]&e == e {
-               return none
-       }
-       total := wp[ch] &^ internal
-       return eventDiff{total, total | e}
-}
-
-// Add assumes neither c nor e are nil or zero values.
-func (wp watchpoint) Add(c chan<- EventInfo, e Event) (diff eventDiff) {
-       wp[c] |= e
-       diff[0] = wp[nil]
-       diff[1] = diff[0] | e
-       wp[nil] = diff[1] &^ omit
-       // Strip diff from internal events.
-       diff[0] &^= internal
-       diff[1] &^= internal
-       if diff[0] == diff[1] {
-               return none
-       }
-       return
-}
-
-func (wp watchpoint) Del(c chan<- EventInfo, e Event) (diff eventDiff) {
-       wp[c] &^= e
-       if wp[c] == 0 {
-               delete(wp, c)
-       }
-       diff[0] = wp[nil]
-       delete(wp, nil)
-       if len(wp) != 0 {
-               // Recalculate total event set.
-               for _, e := range wp {
-                       diff[1] |= e
-               }
-               wp[nil] = diff[1] &^ omit
-       }
-       // Strip diff from internal events.
-       diff[0] &^= internal
-       diff[1] &^= internal
-       if diff[0] == diff[1] {
-               return none
-       }
-       return
-}
-
-func (wp watchpoint) Dispatch(ei EventInfo, extra Event) {
-       e := eventmask(ei, extra)
-       if !matches(wp[nil], e) {
-               return
-       }
-       for ch, eset := range wp {
-               if ch != nil && matches(eset, e) {
-                       select {
-                       case ch <- ei:
-                       default: // Drop event if receiver is too slow
-                               dbgprintf("dropped %s on %q: receiver too slow", ei.Event(), ei.Path())
-                       }
-               }
-       }
-}
-
-func (wp watchpoint) Total() Event {
-       return wp[nil] &^ internal
-}
-
-func (wp watchpoint) IsRecursive() bool {
-       return wp[nil]&recursive != 0
-}