Java Doc for symbol_set.java in  » Parser » CUP-develop » java_cup » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Parser » CUP develop » java_cup   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    java_cup.symbol_set symbol_set public class symbol_set (Code) This class represents a set of symbols and provides a series of set operations to manipulate them. See Also:   java_cup.symbol version:    last updated: 11/25/95 author:    Scott Hudson Field Summary protected  Hashtable _all      A hash table to hold the set. Constructor Summary public   symbol_set()      Constructor for an empty set. public   symbol_set(symbol_set other)      Constructor for cloning from another set. Method Summary public  boolean add(symbol sym)      Add a single symbol to the set. public  boolean add(symbol_set other)      Add (union) in a complete set. public  Enumeration all()      Access to all elements of the set. public  boolean contains(symbol sym)      Determine if the set contains a particular symbol. public  boolean equals(symbol_set other)      Equality comparison. public  boolean equals(Object other)      Generic equality comparison. public  int hashCode()      Compute a hash code. public  boolean is_subset_of(symbol_set other)      Determine if this set is an (improper) subset of another. public  boolean is_superset_of(symbol_set other)      Determine if this set is an (improper) superset of another. protected  void not_null(Object obj)      Helper function to test for a null object and throw an exception if one is found. public  void remove(symbol sym)      Remove a single symbol if it is in the set. public  void remove(symbol_set other)      Remove (set subtract) a complete set. public  int size()      public  String toString()      Convert to a string. Field Detail _all protected Hashtable _all(Code) A hash table to hold the set. Symbols are keyed using their name string. Constructor Detail symbol_set public symbol_set()(Code) Constructor for an empty set. symbol_set public symbol_set(symbol_set other) throws internal_error(Code) Constructor for cloning from another set. Parameters:   other - the set we are cloning from. Method Detail add public boolean add(symbol sym) throws internal_error(Code) Add a single symbol to the set. Parameters:   sym - the symbol we are adding. true if this changes the set. add public boolean add(symbol_set other) throws internal_error(Code) Add (union) in a complete set. Parameters:   other - the set we are adding in. true if this changes the set. all public Enumeration all()(Code) Access to all elements of the set. contains public boolean contains(symbol sym)(Code) Determine if the set contains a particular symbol. Parameters:   sym - the symbol we are looking for. equals public boolean equals(symbol_set other)(Code) Equality comparison. equals public boolean equals(Object other)(Code) Generic equality comparison. hashCode public int hashCode()(Code) Compute a hash code. is_subset_of public boolean is_subset_of(symbol_set other) throws internal_error(Code) Determine if this set is an (improper) subset of another. Parameters:   other - the set we are testing against. is_superset_of public boolean is_superset_of(symbol_set other) throws internal_error(Code) Determine if this set is an (improper) superset of another. Parameters:   other - the set we are are testing against. not_null protected void not_null(Object obj) throws internal_error(Code) Helper function to test for a null object and throw an exception if one is found. Parameters:   obj - the object we are testing. remove public void remove(symbol sym) throws internal_error(Code) Remove a single symbol if it is in the set. Parameters:   sym - the symbol we are removing. remove public void remove(symbol_set other) throws internal_error(Code) Remove (set subtract) a complete set. Parameters:   other - the set we are removing. size public int size()(Code) size of the set toString public String toString()(Code) Convert to a string. 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)