Added new error INVALID_CHAR_SET.

tool/src/org/antlr/v4/tool/ErrorType.java

@@ -931,6 +931,17 @@ public enum ErrorType {
 	 * <p>custom channels are not supported in combined grammars</p>
 	 */
 	CHANNELS_BLOCK_IN_COMBINED_GRAMMAR(164, "custom channels are not supported in combined grammars", ErrorSeverity.ERROR),
+	/**
+	 * Compiler Error 165.
+	 *
+	 * <p>charset range should have start and end</p>
+	 *
+	 * <pre>
+	 * INVALID_RANGE_IN_CHAR_SET:    [-z] | [a-] | [-]; // error 165
+	 * </pre>
+	 *
+	 * */
+	INVALID_CHAR_SET(165, "invalid charset (range without start or end): <arg>", ErrorSeverity.ERROR),
 
 	NONCONFORMING_LR_RULE(169, "rule <arg> is left recursive but doesn't conform to a pattern ANTLR can handle", ErrorSeverity.ERROR),
 	/**