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PY-20776 PY-20775 PY-20773 Do not highlight empty ranges inside f-strings

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Such errors are difficult to spot because most of the time the
corresponding markers are displayed only in the right gutter, not in
the editor (though, sometimes a single character is highlighted for
some reason).

For an empty expression fragment the whole its content range is
highlighted (from "{" to either "!", ":" or "}").

For the first unclosed expression fragment the range from "{" to the
end of the containing string node is highlighted.

In case of a missing conversion character the character "!" itself is
highlighted.
This commit is contained in:
Mikhail Golubev
2016-10-03 21:45:20 +03:00
parent 2dfb0f8d48
commit 94369babf1
8 changed files with 46 additions and 43 deletions
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6
python/testData/highlighting/fStringTooDeeplyNestedExpressionFragments.py
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@@ -2,6 +2,6 @@ f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">
f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{# foo}</error>}}'
f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z!z}</error>}}'
f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z:{42}}</error>}}'
f'{<error descr="Empty expressions are not allowed inside f-strings"></error>:{<error descr="Empty expressions are not allowed inside f-strings"></error>:<error descr="Expression fragment inside f-string is nested too deeply">{:{}}</error>}}'
f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z<error descr="'}' is expected"></error></error>'
<error descr="Missing closing quote [']">f'{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z</error></error>
f'<error descr="Empty expression fragments are not allowed inside f-strings">{:</error><error descr="Empty expression fragments are not allowed inside f-strings">{:</error><error descr="Expression fragment inside f-string is nested too deeply">{:{}}</error>}}'
f'<error descr="'}' is expected">{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z</error></error>'
<error descr="Missing closing quote [']">f'<error descr="'}' is expected">{x:{y:<error descr="Expression fragment inside f-string is nested too deeply">{z</error></error></error>