Based on input received since the reveal of
https://bugs.openjdk.java.net/browse/JDK-8196004
Raw String Literals, we propose making the following changes.
- We will be extending the definition of raw string literals to allow
repeating backticks (ala Markdown.)
- A raw string literal will begin with a sequence of one or more
backticks, The raw string literal will end when a matching sequence of
backticks is encountered. Any other sequence of backticks is treated
as raw characters.
- There will no longer be an empty raw string literal (redundant and
conflicting.)
- There will no longer be a need for a embedded backtick sequence (double
backtick.)
Ex.
String a = `xyz`; // "xyz"
String b = ``xyz``; // "xyz"
String c = ```x`y``z```; // "x`y``z"
String d = ``; // unmatched opening raw string sequence?
String e = ``
SELECT `EMP_ID`, `LAST_NAME` FROM `EMPLOYEE_TB`
WHERE `CITY` = ‘INDIANAPOLIS'
ORDER BY `EMP_ID`, `LAST_NAME`;
``;
String f = ```````````````````````````````````````````````
SELECT `EMP_ID`, `LAST_NAME` FROM `EMPLOYEE_TB`
WHERE `CITY` = ‘INDIANAPOLIS'
ORDER BY `EMP_ID`, `LAST_NAME`;
```````````````````````````````````````````````;
- The naming of the the “escape" and “unescape" String methods will be
reversed such that “unescape" converts escape sequences to characters
and “escape" converts worthy characters to escape sequences. Some more
thought could be given to these names 1) to address the overloaded use
in other languages, ex. JavaScript HTML escaping, 2) truly make the
direction of conversion clear.
- There was some good discussion about allowing multi-line traditional
strings. The best argument was using the multi-line traditional strings
as a stepping stone to multi-line raw strings; simple -> multi-line ->
raw. It was also mentioned that multi-line traditional strings would
lessen the need for the unescape/escape methods.
Ex.
String g = "
public class Example{
public static void main(String... args){
System.out.println(\"Hello World\");
}
}
";
Ultimately, ignoring escapes, we would end up with two ways of do the
same thing. Thus, we will not be supporting multi-line traditional
strings at this time.
I will be updating the JEP accordingly.
Cheers,
— Jim
