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92
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1 namespace Implab.Diagnostics {
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2 struct OperationContext {
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3 readonly LogicalOperation m_initial;
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4 public readonly static OperationContext EMPTY = new OperationContext(LogicalOperation.EMPTY, false);
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5 LogicalOperation m_current;
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6 readonly bool m_ownership;
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7
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8 public OperationContext(LogicalOperation operation, bool ownership) {
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9 Safe.ArgumentNotNull(operation, "operation");
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10
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11 m_initial = operation;
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12 m_current = operation;
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13 m_ownership = ownership;
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14 }
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15
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16 public LogicalOperation CurrentOperation {
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17 get { return m_current; }
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18 }
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19
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20 public void BeginLogicalOperation(string name) {
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21 m_current = new LogicalOperation(name, m_current);
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22 }
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23
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24 public LogicalOperation DetachLogicalOperation() {
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25 var detached = m_current;
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26 if (m_current != LogicalOperation.EMPTY) {
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27 if (m_current != m_initial)
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28 m_current = m_current.Parent;
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29 else if (m_ownership)
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30 m_current = LogicalOperation.EMPTY;
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31 else
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32 detached = LogicalOperation.EMPTY;
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33 }
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34 TraceLog.TraceWarning("EndLogicalOperation can't be applied in the current context");
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35 return detached;
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36 }
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37
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38 public void EndLogicalOperation() {
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39 if (m_current != m_initial) {
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40 m_current = m_current.Parent;
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41 } else if (m_current != null && m_ownership) {
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42 m_current = null;
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43 } else {
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44 TraceLog.TraceWarning("EndLogicalOperation can't be applied in the current context");
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45 }
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46 }
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47 }
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48 }
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49
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