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csjavacc/parser/NormalProduction.java

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+/*
+ * 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;
+
+}