| java.lang.Object
 org.antlr.runtime.tree.DOTTreeGenerator
| DOTTreeGenerator | | public class DOTTreeGenerator (Code) | | A utility class to generate DOT diagrams (graphviz) from
arbitrary trees. You can pass in your own templates and
can pass in any kind of tree or use Tree interface method.
I wanted this separator so that you don't have to include
ST just to use the org.antlr.runtime.tree.* package.
This is a set of non-static methods so you can subclass
to override. For example, here is an invocation:
CharStream input = new ANTLRInputStream(System.in);
TLexer lex = new TLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lex);
TParser parser = new TParser(tokens);
TParser.e_return r = parser.e();
Tree t = (Tree)r.tree;
System.out.println(t.toStringTree());
DOTTreeGenerator gen = new DOTTreeGenerator();
StringTemplate st = gen.toDOT(t);
System.out.println(st);
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| _edgeST | | public static StringTemplate _edgeST(Code) | | |
| _nodeST | | public static StringTemplate _nodeST(Code) | | |
| _treeST | | public static StringTemplate _treeST(Code) | | |
| nodeNumber | | int nodeNumber(Code) | | Track node number so we can get unique node names
|
| nodeToNumberMap | | HashMap nodeToNumberMap(Code) | | Track node to number mapping so we can get proper node name back
|
| toDOT | | public StringTemplate toDOT(Object tree, TreeAdaptor adaptor, StringTemplate _treeST, StringTemplate _edgeST)(Code) | | |
| toDOT | | public StringTemplate toDOT(Tree tree)(Code) | | Generate DOT (graphviz) for a whole tree not just a node.
For example, 3+4*5 should generate:
digraph {
node [shape=plaintext, fixedsize=true, fontsize=11, fontname="Courier",
width=.4, height=.2];
edge [arrowsize=.7]
"+"->3
"+"->"*"
"*"->4
"*"->5
}
Return the ST not a string in case people want to alter.
Takes a Tree interface object.
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