☂️ Support enclosing ranges

[varungandhi-src]

• Function and method definitions using def. (Requested in Definitions should have an enclosing range #86, fixed by #86 - Adds enclosing ranges to function and class definitions #132)
• Class definitions. (Requested in Definitions should have an enclosing range #86, fixed by #86 - Adds enclosing ranges to function and class definitions #132)
• Expressions
  • Literal expressions
  • Method call expressions
  • Operator call expressions
  • Slice and indexing expressions (a[x], a[x:y], a[x:y:z])
  • Lambda expressions
  • Variable assignments with = and :=
  • Comprehension expressions (list and dictionaries)
  • Keyword expressions (yield e, await e, del e, except e etc.)

Feel free to edit the issue description to mention other kinds of expressions.

For expressions, it might make sense to emit those behind a feature flag than by default, to avoid slowing down the indexer in the common case.

[maks-ivanov]

super glad this is being built!

[varungandhi-src]

@maks-ivanov this is a tracking issue so that it is clearer what part of this feature is complete/incomplete. At Sourcegraph, we're not actively using this feature, so we don't have anyone assigned to work on it (as reflected in the empty 'assigned' field for the issue).