Support endless ranges in where #34906
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| @@ -639,6 +639,16 @@ class AttributeTest < Arel::Spec | |||
| ) | |||
| end | |||
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| it "can be constructed with a range implicitly ending at Infinity" do | |||
| attribute = Attribute.new nil, nil | |||
| node = attribute.between(0..) | |||
tenderlove
Jan 9, 2019
Member
I think this will give us a syntax error on 2.5. Can you conditionalize this test so we don't get build failures on 2.5?
I think this will give us a syntax error on 2.5. Can you conditionalize this test so we don't get build failures on 2.5?
gregnavis
Jan 9, 2019
Author
Contributor
Sure. The built actually failed for precisely this reason. I'll push an update tomorrow.
Sure. The built actually failed for precisely this reason. I'll push an update tomorrow.
gregnavis
Jan 10, 2019
Author
Contributor
D'oh, what I did won't work for syntax error 🙈
I can either:
- Come up with something that would work for syntax errors.
- Leave the check as it is and replace
0.. with 0..nil (they're equivalent). In Rubyies pre-2.6 the latter results in an ArgumentError exception.
@tenderlove what do you think?
D'oh, what I did won't work for syntax error
I can either:
- Come up with something that would work for syntax errors.
- Leave the check as it is and replace
0..with0..nil(they're equivalent). In Rubyies pre-2.6 the latter results in anArgumentErrorexception.
@tenderlove what do you think?
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| if Gem::Version.new('2.6.0') <= Gem::Version.new(RUBY_VERSION) | ||
| it "can be constructed with a range implicitly ending at Infinity" do | ||
| attribute = Attribute.new nil, nil | ||
| node = attribute.between(0..) |
sikachu
Jan 11, 2019
Member
May I suggest this?
Suggested change
node = attribute.between(0..)
node = attribute.between(eval("0..")) # Use eval for compatibility with Ruby < 2.6 parser.
This way Ruby parser in version < 2.6 will just overlook it.
May I suggest this?
Suggested change
| node = attribute.between(0..) | |
| node = attribute.between(eval("0..")) # Use eval for compatibility with Ruby < 2.6 parser. |
This way Ruby parser in version < 2.6 will just overlook it.
gregnavis
Jan 11, 2019
Author
Contributor
Great idea. Thanks!
Great idea. Thanks!
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Would you mind checking CodeClimate? Looks like in the test, line 642 and 645 should both use double quote and not single quote. |
This commit adds support for endless ranges, e.g. (1..), that were added in Ruby 2.6. They're functionally equivalent to explicitly specifying Float::INFINITY as the end of the range.
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@tenderlove @sikachu thanks for comments! The build is green now. Please have another look. |
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I think this is good to merge. @tenderlove, please! |
kamipo
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Jan 11, 2019
And support endless ranges for `not_between` like as `between`. Follow up #34906.
suketa
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Jul 14, 2019
Support endless ranges in where rails/rails#34906
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Summary
This commit adds support for endless ranges, e.g.
(1..), that were added in Ruby 2.6. They're functionally equivalent to explicitly specifyingFloat::INFINITYas the end of the range.Specifically:
is equivalent to
Other Information
Only the end of a range can be omitted. Trying
(..1)results in a syntax error so there's no need to add support for implicit-Float::INFINITY.Alternative Implementation
We could modify
otherat the beginning ofbetweenand replacenilwithFloat::INFINITY(or even support-Float::INFINITY) so that there'd be no changes to conditions inifstatements below + we would be able to supportnil..1(equivalent to-Float::INFINITY..1).Please let me know if you find this preferable and I'll update the PR.