ExpScalar.toString doesn't follow the rules of the parser. It effectively calls value.toString(). The only special rule is that it encloses it in single quotes if it is a char sequence. We need the encoding to be complimentary to the literals grammar used by the parser:
Long l = 3147483647L; // encode as 3147483647L, not 314748364
BigDecimal d = new BigDecimal("2.1000001B"); // encode as 2.1000001B, not 2.1000001
// same for floats...
String s1 = "a'b"; // encode as "a'b", not 'a'b'
String s1 = "a\"'b"; // encode as 'a"\'b, not 'a"'b'
ExpScalar.toString doesn't follow the rules of the parser. It effectively calls
value.toString(). The only special rule is that it encloses it in single quotes if it is a char sequence. We need the encoding to be complimentary to the literals grammar used by the parser: