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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.terminal_set terminal_set public class terminal_set (Code) A set of terminals implemented as a bitset. version:    last updated: 11/25/95 author:    Scott Hudson Field Summary final public static  terminal_set EMPTY      Constant for the empty set. protected  BitSet _elements      Bitset to implement the actual set. Constructor Summary public   terminal_set()      Constructor for an empty set. public   terminal_set(terminal_set other)      Constructor for cloning from another set. Method Summary public  boolean add(terminal sym)      Add a single terminal to the set. public  boolean add(terminal_set other)      Add (union) in a complete set. public  boolean contains(terminal sym)      Determine if the set contains a particular terminal. public  boolean contains(int indx)      Given its index determine if the set contains a particular terminal. public  boolean empty()      Determine if the set is empty. public  boolean equals(terminal_set other)      Equality comparison. public  boolean equals(Object other)      Generic equality comparison. public  boolean intersects(terminal_set other)      Determine if this set intersects another. public  boolean is_subset_of(terminal_set other)      Determine if this set is an (improper) subset of another. public  boolean is_superset_of(terminal_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(terminal sym)      Remove a terminal if it is in the set. public  String toString()      Convert to string. Field Detail EMPTY final public static terminal_set EMPTY(Code) Constant for the empty set. _elements protected BitSet _elements(Code) Bitset to implement the actual set. Constructor Detail terminal_set public terminal_set()(Code) Constructor for an empty set. terminal_set public terminal_set(terminal_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(terminal sym) throws internal_error(Code) Add a single terminal to the set. Parameters:   sym - the terminal being added. true if this changes the set. add public boolean add(terminal_set other) throws internal_error(Code) Add (union) in a complete set. Parameters:   other - the set being added. true if this changes the set. contains public boolean contains(terminal sym) throws internal_error(Code) Determine if the set contains a particular terminal. Parameters:   sym - the terminal symbol we are looking for. contains public boolean contains(int indx)(Code) Given its index determine if the set contains a particular terminal. Parameters:   indx - the index of the terminal in question. empty public boolean empty()(Code) Determine if the set is empty. equals public boolean equals(terminal_set other)(Code) Equality comparison. equals public boolean equals(Object other)(Code) Generic equality comparison. intersects public boolean intersects(terminal_set other) throws internal_error(Code) Determine if this set intersects another. Parameters:   other - the other set in question. is_subset_of public boolean is_subset_of(terminal_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(terminal_set other) throws internal_error(Code) Determine if this set is an (improper) superset of another. Parameters:   other - the set we 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(terminal sym) throws internal_error(Code) Remove a terminal if it is in the set. Parameters:   sym - the terminal being removed. toString public String toString()(Code) Convert to 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)