Instead of using t.toStringTree(), you can ask ANTLR to generate DOT/graphviz format:
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DOTTreeGenerator gen = new DOTTreeGenerator(); StringTemplate st = gen.toDOT(t); System.out.println(st); |
To display in a Swing window (Java target), use this:
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CommonTree t = (CommonTree) r.getTree();
ASTFrame af = new ASTFrame("Tree", t);
af.setVisible(true);
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where you need the attached code from Jörg Werner.