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62 lines
1.8 KiB
62 lines
1.8 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: |
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// |
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//============================================================================= |
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#ifndef DEPENDENCYGRAPH_H |
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#define DEPENDENCYGRAPH_H |
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#ifdef _WIN32 |
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#pragma once |
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#endif |
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#include "tier1/utlvector.h" |
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#include "tier1/utlhash.h" |
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//----------------------------------------------------------------------------- |
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// Forward declarations |
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//----------------------------------------------------------------------------- |
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class CDmAttribute; |
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class IDmeOperator; |
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struct COperatorNode; |
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class CAttributeNode; |
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//----------------------------------------------------------------------------- |
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// CDependencyGraph class - sorts operators based upon the input/output graph |
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//----------------------------------------------------------------------------- |
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class CDependencyGraph |
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{ |
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public: |
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CDependencyGraph(); |
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~CDependencyGraph(); |
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void Reset( const CUtlVector< IDmeOperator * > &operators ); |
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// caches only the operators that need to be evaluated, sorted by dependencies |
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// returns true if a cycle found - in this case, an arbitrary link of the cycle will be ignored |
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bool CullAndSortOperators(); |
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const CUtlVector< IDmeOperator* > &GetSortedOperators() const { return m_operators; } |
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private: |
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static bool GetOperatorOrdering( CUtlVector< COperatorNode* > &pOpNodes, CUtlVector< IDmeOperator * > &operators ); |
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static void DBG_PrintOperator( const char *pIndent, IDmeOperator *pOp ); |
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friend class CDmElementFramework; |
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void Cleanup(); |
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void FindRoots(); |
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CAttributeNode *FindAttrNode( CDmAttribute *pAttr ); |
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CUtlVector< COperatorNode* > m_opRoots; |
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// CUtlVector< COperatorNode* > m_opLeaves; |
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CUtlVector< COperatorNode* > m_opNodes; |
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CUtlHash< CAttributeNode* > m_attrNodes; |
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CUtlVector< IDmeOperator* > m_operators; |
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}; |
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#endif // DEPENDENCYGRAPH_H
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