1 files changed, 84 insertions, 0 deletions
diff --git a/src/syntaxParser/java_cup/reduce_action.java b/src/syntaxParser/java_cup/reduce_action.java
new file mode 100644
index 0000000..e8f4c84
--- /dev/null
+++ b/src/syntaxParser/java_cup/reduce_action.java
@@ -0,0 +1,84 @@
+
+package java_cup;
+
+/** This class represents a reduce action within the parse table. 
+ *  The action simply stores the production that it reduces with and 
+ *  responds to queries about its type.
+ *
+ * @version last updated: 11/25/95
+ * @author  Scott Hudson
+ */
+public class reduce_action extends parse_action {
+ 
+  /*-----------------------------------------------------------*/
+  /*--- Constructor(s) ----------------------------------------*/
+  /*-----------------------------------------------------------*/
+
+  /** Simple constructor. 
+   * @param prod the production this action reduces with.
+   */
+  public reduce_action(production prod ) throws internal_error
+    {
+      /* sanity check */
+      if (prod == null)
+	throw new internal_error(
+	  "Attempt to create a reduce_action with a null production");
+
+      _reduce_with = prod;
+    }
+
+  /*-----------------------------------------------------------*/
+  /*--- (Access to) Instance Variables ------------------------*/
+  /*-----------------------------------------------------------*/
+  
+  /** The production we reduce with. */
+  protected production _reduce_with;
+
+  /** The production we reduce with. */
+  public production reduce_with() {return _reduce_with;}
+
+  /*-----------------------------------------------------------*/
+  /*--- General Methods ---------------------------------------*/
+  /*-----------------------------------------------------------*/
+
+  /** Quick access to type of action. */
+  public int kind() {return REDUCE;}
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Equality test. */
+  public boolean equals(reduce_action other)
+    {
+      return other != null && other.reduce_with() == reduce_with();
+    }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Generic equality test. */
+  public boolean equals(Object other)
+    {
+      if (other instanceof reduce_action)
+	return equals((reduce_action)other);
+      else
+       return false;
+    }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Compute a hash code. */
+  public int hashCode()
+    {
+      /* use the hash code of the production we are reducing with */
+      return reduce_with().hashCode();
+    }
+
+
+  /** Convert to string. */
+  public String toString() 
+    {
+      return "REDUCE(with prod " + reduce_with().index() + ")";
+    }
+
+  /*-----------------------------------------------------------*/
+
+}