keep getSerializedATNSegmentLimit at max int

tool/src/org/antlr/v4/codegen/Target.java

@@ -478,17 +478,30 @@ public String getBaseVisitorFileName(boolean header) {
 
 	/**
 	 * Gets the maximum number of 16-bit unsigned integers that can be encoded
-	 * in a single segment of the serialized ATN.
+	 * in a single segment (a declaration in target language) of the serialized ATN.
+	 * E.g., in C++, a small segment length results in multiple decls like:
+	 *
+	 *   static const uint16_t serializedATNSegment1[] = {
+	 *     0x7, 0x12, 0x2, 0x13, 0x7, 0x13, 0x2, 0x14, 0x7, 0x14, 0x2, 0x15, 0x7,
+	 *        0x15, 0x2, 0x16, 0x7, 0x16, 0x2, 0x17, 0x7, 0x17, 0x2, 0x18, 0x7,
+	 *        0x18, 0x2, 0x19, 0x7, 0x19, 0x2, 0x1a, 0x7, 0x1a, 0x2, 0x1b, 0x7,
+	 *        0x1b, 0x2, 0x1c, 0x7, 0x1c, 0x2, 0x1d, 0x7, 0x1d, 0x2, 0x1e, 0x7,
+	 *        0x1e, 0x2, 0x1f, 0x7, 0x1f, 0x2, 0x20, 0x7, 0x20, 0x2, 0x21, 0x7,
+	 *        0x21, 0x2, 0x22, 0x7, 0x22, 0x2, 0x23, 0x7, 0x23, 0x2, 0x24, 0x7,
+	 *        0x24, 0x2, 0x25, 0x7, 0x25, 0x2, 0x26,
+	 *   };
+	 *
+	 * instead of one big one.  Targets are free to ignore this like JavaScript does.
+	 *
+	 * This is primarily needed by Java target to limit size of any single ATN string
+	 * to 65k length.
 	 *
 	 * @see SerializedATN#getSegments
 	 *
 	 * @return the serialized ATN segment limit
 	 */
 	public int getSerializedATNSegmentLimit() {
-		// Make strings encoding ATN fit on a single line conveniently so
-		// we can march through generated code more easily.  Only Java has
-		// an actual string len limit (16 bits).
-		return 80;
+		return Integer.MAX_VALUE;
 	}
 
 	/** How many bits should be used to do inline token type tests? Java assumes