Java Doc for Syntax.java in  » Parser » runcc » fri » patterns » interpreter » parsergenerator » syntax » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Parser » runcc » fri.patterns.interpreter.parsergenerator.syntax   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    fri.patterns.interpreter.parsergenerator.syntax.Syntax Syntax public class Syntax implements Serializable(Code) A Syntax is a Rule list that can be converted to a parser table. It provides several methods to check and simplify the grammar. Syntax accepts no duplicate rules (ignores any addition except the first by using a backing hashtable). author:    (c) 2004 Fritz Ritzberger Constructor Summary public   Syntax()      public   Syntax(int size)      public   Syntax(String[][] rules)      public   Syntax(String[][][] ruleSets)      public   Syntax(List rules)      Method Summary public  void addRule(Rule rule)      Appends a new rule to this Syntax. public  void appendRules(List rules)      Append rules to this syntax. public  List findStartRules()      Returns a List of top level Rules (that do not appear on right side of any contained rule). public  Rule getRule(int i)      Returns the rule at the given position. public  Set getUnresolvedNonterminals()      Returns a set of nonterminals that have no rule within this syntax. public  boolean hasRule(String nonterminal)      Returns true if the passed nonterminal is on the left side of at least one contained rule. public  void insertRule(int i, Rule rule)      Inserts a new rule into this Syntax (needed to set artificial START rule at position 0). public  void removeRule(int index)      Removes the rule at passed index from this Syntax. public  void resolveFrom(Syntax resolvingSyntax)      Resolves undefined rules in this syntax from another syntax. public  void resolveSingulars()      Simplify the syntax. public  int size()      Returns the number of rules of this Syntax. public  String toString()      Returns the syntax as a human readable multiline text. Constructor Detail Syntax public Syntax()(Code) Syntax public Syntax(int size)(Code) Syntax public Syntax(String[][] rules)(Code) Syntax public Syntax(String[][][] ruleSets)(Code) Syntax public Syntax(List rules)(Code) Method Detail addRule public void addRule(Rule rule)(Code) Appends a new rule to this Syntax. appendRules public void appendRules(List rules)(Code) Append rules to this syntax. List elements can be Rule or List, second will be converted to Rule. findStartRules public List findStartRules()(Code) Returns a List of top level Rules (that do not appear on right side of any contained rule). getRule public Rule getRule(int i)(Code) Returns the rule at the given position. getUnresolvedNonterminals public Set getUnresolvedNonterminals()(Code) Returns a set of nonterminals that have no rule within this syntax. hasRule public boolean hasRule(String nonterminal)(Code) Returns true if the passed nonterminal is on the left side of at least one contained rule. insertRule public void insertRule(int i, Rule rule)(Code) Inserts a new rule into this Syntax (needed to set artificial START rule at position 0). removeRule public void removeRule(int index)(Code) Removes the rule at passed index from this Syntax. resolveFrom public void resolveFrom(Syntax resolvingSyntax)(Code) Resolves undefined rules in this syntax from another syntax. Parameters:   resolvingSyntax - the syntax to copy rules from resolveSingulars public void resolveSingulars()(Code) Simplify the syntax. Search rules that have a nonterminal that is defined only once and contains exactly one symbol on right side. Such a rule gets deleted and its references get substituted by the symbol on right side of that rule. This method is called by default from SerializedObject (base class for all builders). CAUTION: Such symbols will not be called within Semantic! size public int size()(Code) Returns the number of rules of this Syntax. toString public String toString()(Code) Returns the syntax as a human readable multiline text. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)