Examples of org.antlr.runtime.tree.DOTTreeGenerator

org.antlr.runtime.tree.DOTTreeGenerator

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);

    mapper.enable(SerializationFeature.INDENT_OUTPUT);
    System.out.println(mapper.writeValueAsString(e));


    // print the tree
    CommonTree tree = (CommonTree) ret.getTree();
    DOTTreeGenerator gen = new DOTTreeGenerator();
    StringTemplate st = gen.toDOT(tree);


    Files.write(st.toString(), new File("/Users/jnadeau/Documents/tree.dot"), Charsets.UTF_8);


  }

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