106 lines
3.6 KiB
Java
106 lines
3.6 KiB
Java
/*
|
|
* Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
* California 95054, U.S.A. All rights reserved. Sun Microsystems, Inc. has
|
|
* intellectual property rights relating to technology embodied in the product
|
|
* that is described in this document. In particular, and without limitation,
|
|
* these intellectual property rights may include one or more of the U.S.
|
|
* patents listed at http://www.sun.com/patents and one or more additional
|
|
* patents or pending patent applications in the U.S. and in other countries.
|
|
* U.S. Government Rights - Commercial software. Government users are subject
|
|
* to the Sun Microsystems, Inc. standard license agreement and applicable
|
|
* provisions of the FAR and its supplements. Use is subject to license terms.
|
|
* Sun, Sun Microsystems, the Sun logo and Java are trademarks or registered
|
|
* trademarks of Sun Microsystems, Inc. in the U.S. and other countries. This
|
|
* product is covered and controlled by U.S. Export Control laws and may be
|
|
* subject to the export or import laws in other countries. Nuclear, missile,
|
|
* chemical biological weapons or nuclear maritime end uses or end users,
|
|
* whether direct or indirect, are strictly prohibited. Export or reexport
|
|
* to countries subject to U.S. embargo or to entities identified on U.S.
|
|
* export exclusion lists, including, but not limited to, the denied persons
|
|
* and specially designated nationals lists is strictly prohibited.
|
|
*/
|
|
|
|
package csjavacc.parser;
|
|
|
|
import csjavacc.struct.Expansion;
|
|
|
|
/**
|
|
* Describes JavaCC productions.
|
|
*/
|
|
|
|
public class NormalProduction {
|
|
|
|
/**
|
|
* The line and column number of the construct that corresponds
|
|
* most closely to this node.
|
|
*/
|
|
public int line, column;
|
|
|
|
/**
|
|
* The NonTerminal nodes which refer to this production.
|
|
*/
|
|
java.util.Vector parents = new java.util.Vector();
|
|
|
|
/**
|
|
* The access modifier of this production.
|
|
*/
|
|
public String accessMod;
|
|
|
|
/**
|
|
* The name of the non-terminal of this production.
|
|
*/
|
|
public String lhs;
|
|
|
|
/**
|
|
* The tokens that make up the return type of this production.
|
|
*/
|
|
public java.util.Vector return_type_tokens = new java.util.Vector();
|
|
|
|
/**
|
|
* The tokens that make up the parameters of this production.
|
|
*/
|
|
public java.util.Vector parameter_list_tokens = new java.util.Vector();
|
|
|
|
/**
|
|
* Each entry in this vector is a vector of tokens that represents an
|
|
* exception in the throws list of this production. This list does not
|
|
* include ParseException which is always thrown.
|
|
*/
|
|
public java.util.Vector throws_list = new java.util.Vector();
|
|
|
|
/**
|
|
* The RHS of this production. Not used for JavaCodeProduction.
|
|
*/
|
|
public Expansion expansion;
|
|
|
|
/**
|
|
* This boolean flag is true if this production can expand to empty.
|
|
*/
|
|
boolean emptyPossible = false;
|
|
|
|
/**
|
|
* A list of all non-terminals that this one can expand to without
|
|
* having to consume any tokens. Also an index that shows how many
|
|
* pointers exist.
|
|
*/
|
|
NormalProduction[] leftExpansions = new NormalProduction[10];
|
|
int leIndex = 0;
|
|
|
|
/**
|
|
* The following variable is used to maintain state information for the
|
|
* left-recursion determination algorithm: It is initialized to 0, and
|
|
* set to -1 if this node has been visited in a pre-order walk, and then
|
|
* it is set to 1 if the pre-order walk of the whole graph from this
|
|
* node has been traversed. i.e., -1 indicates partially processed,
|
|
* and 1 indicates fully processed.
|
|
*/
|
|
int walkStatus = 0;
|
|
|
|
/**
|
|
* The first and last tokens from the input stream that represent this
|
|
* production.
|
|
*/
|
|
public Token firstToken, lastToken;
|
|
|
|
}
|