Hi,
Your mail is virtually unreadable.
But from what I can gather, I think you are asking for something like
this: https://openjdk.java.net/jeps/8273943
However, that is not a question for the build-dev mailing list.
/Magnus
On 2022-03-17 10:15, Ruidong Pu wrote:
This feature has been around for a long time in other languages. Mainly for automatic insertion of values for string formatting, such as template strings in Python3 or JavaScript (maybe with different names).<br/><br/>Below are some examples of template strings.<br/><br/>For example, after Python 3.6+, Python can format strings like this:<br/><br/>>>> name = "Fred"<br/>>>> f"He said his name is {name!r}."<br/>"He said his name is 'Fred'."<br/>>>> f"He said his name is {repr(name)}." # repr() is equivalent to !r<br/>"He said his name is 'Fred'."<br/>>>> width = 10<br/>>>> precision = 4<br/>>>> value =
decimal.Decimal("12.34567")<br/>>>> f"result: {value:{width}.{precision}}" # nested fields<br/>'result: 12.35'<br/>>>> today = datetime(year=2017, month=1, day=27)<br/>>>> f"{today:%B %d, %Y}" # using date format specifier<br/>'January 27, 2017'<br/>>>> f"{today=:%B %d, %Y}" # using date format specifier and debugging<br/>'today=January 27, 2017'<br/>>>> number = 1024<br/>>>> f"{number:#0x}" # using integer format specifier<br/>'0x400'<br/>>>> foo = "bar"<br/>>>> f"{ foo = }" # preserves whitespace<br/>" foo = 'bar'"<br/>>>> line =
"The mill's closed"<br/>>>> f"{line = }"<br/>'line = "The mill\'s closed"'<br/>>>> f"{line = :20}"<br/>"line = The mill's closed "<br/>>>> f"{line = !r:20}"<br/>'line = "The mill\'s closed" '<br/><br/>output {}:<br/><br/>>>> f"Out: {{0}}"<br/><br/>Multi-line text:<br/><br/>count=1<br/>out=f"""<br/>Count is: {count}<br/>Count is: {count}<br/>Count is: {count}<br/>"""<br/><br/>example from: <a
href="https://docs.python.org/3/reference/lexical_analysis.html#f-strings";>https://docs.python.org/3/reference/lexical_analysis.html#f-strings</a><br/><br/>JavaScript:<br/><br/>Template strings also exist in JavaScript, e.g.:<br/><br/>// Untagged, these create strings:<br/>`string text`<br/><br/>`string text line 1<br/> string text line 2`<br/><br/>let expression=",";<br/><br/>`string text ${expression} string text`<br/><br/>Reference address: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals";>https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals</a><br/><br/>If you want Java to optimize the way of formatting strings in Text Blocks, you can refer to the implementation of Python or
JavaScript.<br/><br/><html>
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