[ARROW-12778] [R] Support tidyselect where() selection helper in dplyr verbs

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 10.0.0
• Component/s: R
• Labels: dplyr
• External issue URL: https://github.com/apache/arrow/issues/18668
• Assignee: Nicola Crane
• Reporter: Ian Cook
• Created: 13/May/21 17:28
• Updated: 11/Jan/23 08:28
• Resolved: 14/Oct/22 14:25

Description

Since we can now determine the data type of an unevaluated array expression (ARROW-12291) I think we should be able to support the where() selection helper.

This is already done for the relocate() verb (in ARROW-12781 ) but not for any other verbs. 

Steps required to do this:

1. ARROW-12781 
2. ARROW-12105
3. Remove the check_select_helpers() function definition and remove all the calls to it
4. Modify any remaining the expect_error() tests that test where() and check for the error message "Unsupported selection helper"

Issue Links

• depends upon: ARROW-12105 [R] Replace vars_select, vars_rename with eval_select, eval_rename
• depends upon: ARROW-12291 [R] Determine the type of an unevaluated expression
• depends upon: ARROW-12781 [R] Implement is.type() functions for dplyr
• is related to: ARROW-17698 [R] Implement use of `where()` inside `across()