private Object readLiteral()

in spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSONTokener.java [279:334]

• 44 lines of code
• 13 McCabe index (conditional complexity)

	private Object readLiteral() throws JSONException {
		String literal = nextToInternal("{}[]/\\:,=;# \t\f");

		if (literal.isEmpty()) {
			throw syntaxError("Expected literal value");
		}
		else if ("null".equalsIgnoreCase(literal)) {
			return JSONObject.NULL;
		}
		else if ("true".equalsIgnoreCase(literal)) {
			return Boolean.TRUE;
		}
		else if ("false".equalsIgnoreCase(literal)) {
			return Boolean.FALSE;
		}

		/* try to parse as an integral type... */
		if (literal.indexOf('.') == -1) {
			int base = 10;
			String number = literal;
			if (number.startsWith("0x") || number.startsWith("0X")) {
				number = number.substring(2);
				base = 16;
			}
			else if (number.startsWith("0") && number.length() > 1) {
				number = number.substring(1);
				base = 8;
			}
			try {
				long longValue = Long.parseLong(number, base);
				if (longValue <= Integer.MAX_VALUE && longValue >= Integer.MIN_VALUE) {
					return (int) longValue;
				}
				else {
					return longValue;
				}
			}
			catch (NumberFormatException e) {
				/*
				 * This only happens for integral numbers greater than Long.MAX_VALUE,
				 * numbers in exponential form (5e-10) and unquoted strings. Fall through
				 * to try floating point.
				 */
			}
		}

		/* ...next try to parse as a floating point... */
		try {
			return Double.valueOf(literal);
		}
		catch (NumberFormatException ignored) {
		}

		/* ... finally give up. We have an unquoted string */
		return new String(literal); // a new string avoids leaking memory
	}