Java Doc for Simplifier.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.Simplifier Simplifier public class Simplifier extends GrammarVisitor (Code) Visitor to simplify a grammar. This visitor folds nested choices and sequences into the embedding choice or sequence, eliminates choices and sequences with only one alternative or element (with the exception of the top-level choice of a production), and reduces repetitions and options to their simplest form. It also reduces trivial character classes and string literals to character literals. Note that the resulting grammar may violate the requirements of CodeGenerator code generation . author:    Robert Grimm version:    $Revision: 1.54 $ Constructor Summary public   Simplifier(Runtime runtime, Analyzer analyzer)      Create a new simplifier. Method Summary public  Element visit(OrderedChoice c)      Visit the specified ordered choice. public  Element visit(Repetition r)      Visit the specified repetition. public  Element visit(Option o)      Visit the specified option. public  Element visit(Sequence s)      Visit the specified sequence. public  Element visit(VoidedElement v)      Visit the specified voided element. public  Element visit(Binding b)      Visit the specified binding. public  Element visit(StringMatch m)      Visit the specified string match. public  Element visit(CharClass c)      Visit the specified character class. Constructor Detail Simplifier public Simplifier(Runtime runtime, Analyzer analyzer)(Code) Create a new simplifier. Parameters:   runtime - The runtime. Parameters:   analyzer - The analyzer utility. Method Detail visit public Element visit(OrderedChoice c)(Code) Visit the specified ordered choice. visit public Element visit(Repetition r)(Code) Visit the specified repetition. visit public Element visit(Option o)(Code) Visit the specified option. visit public Element visit(Sequence s)(Code) Visit the specified sequence. visit public Element visit(VoidedElement v)(Code) Visit the specified voided element. visit public Element visit(Binding b)(Code) Visit the specified binding. visit public Element visit(StringMatch m)(Code) Visit the specified string match. visit public Element visit(CharClass c)(Code) Visit the specified character class. 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)