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66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
//===-- Support/DotGraphTraits.h - Customize .dot output -------*- C++ -*--===//
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//
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// This file defines a template class that can be used to customize dot output
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// graphs generated by the GraphWriter.h file. The default implementation of
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// this file will produce a simple, but not very polished graph. By
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// specializing this template, lots of customization opportunities are possible.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_DOTGRAPHTRAITS_H
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#define SUPPORT_DOTGRAPHTRAITS_H
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#include <string>
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/// DefaultDOTGraphTraits - This class provides the default implementations of
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/// all of the DOTGraphTraits methods. If a specialization does not need to
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/// override all methods here it should inherit so that it can get the default
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/// implementations.
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///
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struct DefaultDOTGraphTraits {
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/// getGraphName - Return the label for the graph as a whole. Printed at the
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/// top of the graph.
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///
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static std::string getGraphName(void *Graph) { return ""; }
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/// getNodeLabel - Given a node and a pointer to the top level graph, return
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/// the label to print in the node.
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static std::string getNodeLabel(void *Node, void *Graph) { return ""; }
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/// If you want to specify custom node attributes, this is the place to do so
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///
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static std::string getNodeAttributes(void *Node) { return ""; }
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/// If you want to override the dot attributes printed for a particular edge,
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/// override this method.
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template<typename EdgeIter>
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static std::string getEdgeAttributes(void *Node, EdgeIter EI) { return ""; }
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/// getEdgeSourceLabel - If you want to label the edge source itself,
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/// implement this method.
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template<typename EdgeIter>
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static std::string getEdgeSourceLabel(void *Node, EdgeIter I) { return ""; }
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/// edgeTargetsEdgeSource - This method returns true if this outgoing edge
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/// should actually target another edge source, not a node. If this method is
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/// implemented, getEdgeTarget should be implemented.
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template<typename EdgeIter>
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static bool edgeTargetsEdgeSource(void *Node, EdgeIter I) { return false; }
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/// getEdgeTarget - If edgeTargetsEdgeSource returns true, this method is
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/// called to determine which outgoing edge of Node is the target of this
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/// edge.
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template<typename EdgeIter>
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static EdgeIter getEdgeTarget(void *Node, EdgeIter I) { return I; }
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};
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/// DOTGraphTraits - Template class that can be specialized to customize how
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/// graphs are converted to 'dot' graphs. When specializing, you may inherit
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/// from DefaultDOTGraphTraits if you don't need to override everything.
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///
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template <typename Ty>
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class DOTGraphTraits : public DefaultDOTGraphTraits {};
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#endif
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