Java Doc for RootFinder.java in  » Parser » Rats-Parser-Generators » xtc » parser » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Parser » Rats Parser Generators » xtc.parser   Source Cross Reference   Class Diagram   Java Document (Java Doc)   xtc.parser.GrammarVisitor    xtc.parser.RootFinder RootFinder public class RootFinder extends GrammarVisitor (Code) Visitor to identify a grammar's real root. A real root is a top-level nonterminal, whose production directly or indirectly depends on all other top-level nonterminals. If a grammar has such a root, this visitor annotates the grammar with the Properties.ROOT root property. Note that this visitor assumes that the entire grammar is contained in a single module. author:    Robert Grimm version:    $Revision: 1.12 $ Field Summary protected  Set<NonTerminal> topLevel      The set of qualified top-level nonterminals. Constructor Summary public   RootFinder(Runtime runtime, Analyzer analyzer)      Create a new root finder. Method Summary public  Object visit(Module m)      Visit the specified grammar. public  Element visit(NonTerminal nt)      Visit the specified nonterminal. Field Detail topLevel protected Set<NonTerminal> topLevel(Code) The set of qualified top-level nonterminals. Constructor Detail RootFinder public RootFinder(Runtime runtime, Analyzer analyzer)(Code) Create a new root finder. Parameters:   runtime - The runtime. Parameters:   analyzer - The analyzer utility. Method Detail visit public Object visit(Module m)(Code) Visit the specified grammar. visit public Element visit(NonTerminal nt)(Code) Visit the specified nonterminal. Fields inherited from xtc.parser.GrammarVisitor final protected Analyzer analyzer(Code)(Java Doc) protected boolean isBound(Code)(Java Doc) protected boolean isLastElement(Code)(Java Doc) protected boolean isPredicate(Code)(Java Doc) protected boolean isRepeatedOnce(Code)(Java Doc) protected boolean isTopLevel(Code)(Java Doc) protected boolean isVoided(Code)(Java Doc) protected boolean needsSequence(Code)(Java Doc) final protected Runtime runtime(Code)(Java Doc) protected boolean transformInPlace(Code)(Java Doc) Methods inherited from xtc.parser.GrammarVisitor public Object visit(Grammar g)(Code)(Java Doc) public Object visit(Module m)(Code)(Java Doc) public Production visit(Production p)(Code)(Java Doc) public Element visit(OrderedChoice c)(Code)(Java Doc) public Element visit(Repetition r)(Code)(Java Doc) public Element visit(Option o)(Code)(Java Doc) public Element visit(Sequence s)(Code)(Java Doc) public Element visit(Predicate p)(Code)(Java Doc) public Element visit(SemanticPredicate p)(Code)(Java Doc) public Element visit(VoidedElement v)(Code)(Java Doc) public Element visit(Binding b)(Code)(Java Doc) public Element visit(StringMatch m)(Code)(Java Doc) public CharCase visit(CharCase c)(Code)(Java Doc) public Element visit(CharSwitch s)(Code)(Java Doc) public Element visit(ParserAction pa)(Code)(Java Doc) public Element visit(Element e)(Code)(Java Doc)