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Visual Basic class definition | 1999-01-12 | 1.0 KB | 53 lines |
- VERSION 1.0 CLASS
- BEGIN
- MultiUse = -1 'True
- Persistable = 0 'NotPersistable
- DataBindingBehavior = 0 'vbNone
- DataSourceBehavior = 0 'vbNone
- MTSTransactionMode = 0 'NotAnMTSObject
- END
- Attribute VB_Name = "queue"
- Attribute VB_GlobalNameSpace = False
- Attribute VB_Creatable = True
- Attribute VB_PredeclaredId = False
- Attribute VB_Exposed = False
- Option Explicit
-
- 'Queue.cls
-
- Private Q() As Variant
- Private Front As Integer
- Private Rear As Integer
- Private QueueSize As Integer
-
- Public Function EmptyQ() As Boolean
- EmptyQ = (Rear = Front)
- End Function
-
- Public Sub ClearQ(QSize As Integer)
-
- ReDim Q(QSize)
- Front = QSize
- Rear = QSize
- QueueSize = QSize
-
- End Sub
-
- Public Sub EnQ(NewVal As Variant)
- If Rear = QueueSize Then
- Rear = 1
- Else
- Rear = Rear + 1
- End If
- Q(Rear) = NewVal
- End Sub
-
- Public Sub DeQ(Entry As Variant)
- If Front = QueueSize Then
- Front = 1
- Else
- Front = Front + 1
- End If
- Entry = Q(Front)
- End Sub
-