Examples of org.jnode.shell.syntax.MuSyntax.resolveBackReferences()

org.jnode.shell.syntax.MuSyntax.resolveBackReferences()
Resolve any MuBackReference instances in this syntax tree.
The algorithm has the following limitations:
- References to ancestor syntax nodes (true back references) are guaranteed to be resolvable. References to sibling or cousin syntax nodes may not be resolvable, depending on whether or not the target is encountered before the reference in the tree traversal order.
- If SyntaxFailureException is thrown, the syntax tree may be left in a partially resolved state.
@throws SyntaxFailureException if any MuBackReference cannot be resolved.


        // <root> ::= <<fileArg>> | ( <<intArg>> <root> )
        MuSyntax syntax =
                new MuAlternation("root", new MuArgument("fileArg"), new MuSequence(new MuArgument(
                        "intArg"), new MuBackReference("root")));
        syntax.resolveBackReferences();


        MuParser parser = new MuParser();
        CommandLine cl;


        cl = new CommandLine(new String[] {"x"});

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        // <root> ::= ( <<intArg>> <root> ) | <<fileArg>>
        MuSyntax syntax =
                new MuAlternation("root", new MuSequence(new MuArgument("intArg"),
                        new MuBackReference("root")), new MuArgument("fileArg"));
        syntax.resolveBackReferences();
        MuParser parser = new MuParser();
        CommandLine cl;


        cl = new CommandLine(new String[] {"x"});
        parser.parse(syntax, null, cl.tokenIterator(), bundle);

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        // ( ( <<intArg>> <root> ) | <<bigArg>> ) )
        MuSyntax syntax = new MuAlternation("root", new MuAlternation(new MuSequence(new MuArgument("intArg"),
            new MuBackReference("root")), new MuSequence(new MuArgument("bigArg"), new MuArgument("smallArg"))),
            new MuAlternation(new MuSequence(new MuArgument("intArg"), new MuBackReference("root")),
                new MuArgument("bigArg")));
        syntax.resolveBackReferences();


        MuParser parser = new MuParser();
        CommandLine cl;


        cl = new CommandLine(new String[] {"BIG"});

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