Method isSimpleName

src/main/java/org/jpl7/JPL.java:293–311

Checks if a string is a simple atom, with no quoting needed @param s string to check if it is simple name (no quoting needed) @return whether s is a simple name, i.e. which needs no quoting in source text

(String s)

	 * @return whether s is a simple name, i.e. which needs no quoting in source text
	 */
	protected static boolean isSimpleName(String s) {
		int len;
		char c;
		if (s == null) {
			throw new java.lang.NullPointerException(); // JPL won't call it this way
		} else if ((len = s.length()) == 0) {
			return false;
		} else if ((c = s.charAt(0)) < 'a' || c > 'z') {
			return false;
		} else {
			for (int i = 1; i < len; i++) {
				c = s.charAt(i);
				if (!(c == '_' || c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z' || c >= '0' && c <= '9')) {
					return false;
				}
			}
			return true;
		}
	}

	// /**
	// * whether the String arg is a plausible tag, e.g. "J#0123456789".