[wp-trac] [WordPress Trac] #41305: Add lazily evaluated translations

[WordPress Trac]

#41305: Add lazily evaluated translations
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 Reporter:  schlessera                           |       Owner:  jnylen0
     Type:  enhancement                          |      Status:  assigned
 Priority:  normal                               |   Milestone:  5.0
Component:  I18N                                 |     Version:  4.8
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch early dev-feedback needs-  |     Focuses:  rest-api,
  testing                                        |  performance
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Comment (by TimothyBlynJacobs):

 Ignore the unit tests comment, was an issue with my local setup.

 However, looking at the issue with string proxy evaluations. Following an
 approach like I describe isn't workable due to #37997.

 Braindump of possible solutions:

 1. Always retrieve a fresh value if `is_locale_switched()`. This would
 lose a lot of performance gains when doing a REST API request with the
 locale set.
 2. Move storage to a static array. When locale is switched, empty out the
 static array. Would require a new protected `$id` property to use as a key
 could be based off of the text and any other modifiers, or just a static
 counter should work. When the object is `__destruct`ed it could remove its
 entry from the static array.
 3. Similar as 2, but change the storage format to be first keyed by
 locale, then keyed by the proxy ID. Store the current locale as a static
 property. When the locale changes, change the static locale property. This
 could have a negative memory impact if switching to a lot of different
 locales during a request. For instance, when sending out an email to
 multiple different users. However, I'd imagine that not many different
 strings would be evaluated in a case like this.

 Other thoughts?

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Ticket URL: <https://core.trac.wordpress.org/ticket/41305#comment:40>
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