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1 files changed, 93 insertions, 0 deletions

diff --git a/src/syntaxParser/java_cup/action_part.java b/src/syntaxParser/java_cup/action_part.java
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+++ b/src/syntaxParser/java_cup/action_part.java
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+
+package java_cup;
+
+/** 
+ * This class represents a part of a production which contains an
+ * action.  These are eventually eliminated from productions and converted
+ * to trailing actions by factoring out with a production that derives the
+ * empty string (and ends with this action).
+ *
+ * @see java_cup.production
+ * @version last update: 11/25/95
+ * @author Scott Hudson
+ */
+
+public class action_part extends production_part {
+
+  /*-----------------------------------------------------------*/
+  /*--- Constructors ------------------------------------------*/
+  /*-----------------------------------------------------------*/
+
+  /** Simple constructor. 
+   * @param code_str string containing the actual user code.
+   */
+  public action_part(String code_str)
+    {
+      super(/* never have a label on code */null);
+      _code_string = code_str;
+    }
+
+  /*-----------------------------------------------------------*/
+  /*--- (Access to) Instance Variables ------------------------*/
+  /*-----------------------------------------------------------*/
+
+  /** String containing code for the action in question. */
+  protected String _code_string;
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** String containing code for the action in question. */
+  public String code_string() {return _code_string;}
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Set the code string. */
+  public void set_code_string(String new_str) {_code_string = new_str;}
+
+  /*-----------------------------------------------------------*/
+  /*--- General Methods ---------------------------------------*/
+  /*-----------------------------------------------------------*/
+
+  /** Override to report this object as an action. */
+  public boolean is_action() { return true; }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Equality comparison for properly typed object. */
+  public boolean equals(action_part other)
+    {
+      /* compare the strings */
+      return other != null && super.equals(other) && 
+	     other.code_string().equals(code_string());
+    }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Generic equality comparison. */
+  public boolean equals(Object other)
+    {
+      if (!(other instanceof action_part)) 
+	return false;
+      else
+	return equals((action_part)other);
+    }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Produce a hash code. */
+  public int hashCode()
+    {
+      return super.hashCode() ^ 
+	     (code_string()==null ? 0 : code_string().hashCode());
+    }
+
+  /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
+
+  /** Convert to a string.  */
+  public String toString()
+    {
+      return super.toString() + "{" + code_string() + "}";
+    }
+
+  /*-----------------------------------------------------------*/
+}