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csjavacc/struct/CharacterRange.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.struct;
+
+import csjavacc.parser.CSJavaCCErrors;
+
+/**
+ * Describes character range descriptors in a character list.
+ */
+
+public class CharacterRange {
+
+  /**
+   * The line and column number of the construct that corresponds
+   * most closely to this node.
+   */
+  public int line, column;
+
+  /**
+   * The leftmost and the rightmost characters in this character range.
+   */
+  public char left, right;
+
+  public CharacterRange() { }
+
+  public CharacterRange(char l, char r)
+  {
+     if (l > r)
+        CSJavaCCErrors.semantic_error(this, "Invalid range : \"" + (int)l + "\" - \"" 
+              + (int)r + "\". First character shoud be less than or equal to the second one in a range.");
+
+     left = l;
+     right = r;
+  }
+}