#774 rexxc should indicate the minimum language level required

[Per Olov Jonsson]

This RFE might be necessary only with the change to 5.1.0

It would be beneficial if rexxc could warn the user at tokenising time that he or she is using features from the latest language level that would render the tokenised program unusable on a computer with a lower level.

Example: tokenising with ooRexx 5.1 rexxc should warn if language features introduced with 5.1 renders a tokenised program unusable on ooRexx 5.0

With future releases the language levels that are required for new features should be documented.

[Jeremy Nicoll]

On Mon, 9 Mar 2020, at 07:32, Per Olov Jonsson wrote:

It would be beneficial if rexxc could warn the user at tokenising time
that he or she is using features from the latest language level that
would render the tokenised program unusable on a computer with a lower
level.

It's not just tokenised programs that could fall foul of an absence of
later-developed language features.

Is there, or will there, be a way for a non-tokenised program to find out
dynamically what interpreter language level it needs to have present to
be able to run?

--
Jeremy Nicoll - my opinions are my own.

[Rick McGuire]

Generally, these will give a syntax error when you attempt to run something
with a non-supported language feature.

On Mon, Mar 9, 2020 at 8:31 AM Jeremy C B Nicoll jeremynicoll@users.sourceforge.net wrote:

On Mon, 9 Mar 2020, at 07:32, Per Olov Jonsson wrote:

It would be beneficial if rexxc could warn the user at tokenising time
that he or she is using features from the latest language level that
would render the tokenised program unusable on a computer with a lower
level.

It's not just tokenised programs that could fall foul of an absence of
later-developed language features.

Is there, or will there, be a way for a non-tokenised program to find out
dynamically what interpreter language level it needs to have present to
be able to run?

--
Jeremy Nicoll - my opinions are my own.

---

[feature-requests:#774] rexxc should indicate the minimum language
level required

Status: unread
Milestone: 5.0.0
Created: Mon Mar 09, 2020 07:32 AM UTC by Per Olov Jonsson
Last Updated: Mon Mar 09, 2020 07:32 AM UTC
Owner: nobody

This RFE might be necessary only with the change to 5.1.0

It would be beneficial if rexxc could warn the user at tokenising time
that he or she is using features from the latest language level that would
render the tokenised program unusable on a computer with a lower level.

Example: tokenising with ooRexx 5.1 rexxc should warn if language
features introduced with 5.1 renders a tokenised program unusable on ooRexx
5.0

With future releases the language levels that are required for new
features should be documented.

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