The update to the grammar itself covers the case where the document
is a single expression without a trailing newline such as "min(A, B)".
A small change to the parser now parses these expressions correctly
which improves the display of the function head in the signature
help popup.
The update to the queries marks 'andalso', 'orelse', 'not', etc. as
`@keyword.operator` which improves the look - it looks odd to see
operators that are words highlighted the same as tokens like '->'
or '=:='.
* str, list, etc. handled as @function.builtin and @type.builtin
* None and non-conforming type indentifiers as @type in type hints
* class identifiers treated as @type
* @constructor used for constructor definitions and calls rather than
as a catch-all for type-like things
* Parameters highlighted
* self and cls as @variable.builtin
* improved decorator highlighting as part of @function
Re-ordering of some statements to give more accurate priority.
* log textobject query construction errors
The current behavior is that invalid queries are discarded silently
which makes it difficult to debug invalid textobjects (either invalid
syntax or an update may have come through that changed the valid set
of nodes).
* fix golang textobject query
`method_spec_list` used to be a named node but was removed (I think
for Helix, it was when updated to pull in the support for generics).
Instead of a named node for the list of method specs we have a bunch
of `method_spec` children nodes now. We can match on the set of them
with a `+` wildcard.
Example go for this query:
type Shape interface {
area() float64
perimeter() float64
}
Which is parsed as:
(source_file
(type_declaration
(type_spec
name: (type_identifier)
type: (interface_type
(method_spec
name: (field_identifier)
parameters: (parameter_list)
result: (type_identifier))
(method_spec
name: (field_identifier)
parameters: (parameter_list)
result: (type_identifier))))))
HEEx is a templating engine on top of Elixir's EEx templating
language specific to HTML that is included in Phoenix.LiveView
(though I think the plan is to eventually include it in base
Phoenix). It's a superset of EEx with some additional features
like components and slots.
The injections don't work perfectly because the Elixir grammar is
newline sensitive (the _terminator rule). See
https://github.com/elixir-lang/tree-sitter-elixir/issues/24
for more information.
This will become more important with the HEEx grammar being added.
Error highlighting with the Elixir grammar is a bit jumpy because
in some scenarios, a bit of missing syntax can force tree-sitter to
give up on error recovery and mark the entire tree as an error.
This ends up looking bad when editing. We don't typically highlight
error nodes so I'm inclined to leave it out of the highlights here.
After the incremental parsing rewrite for injections (which was released
in 22.03 https://helix-editor.com/news/release-22-03-highlights/#incremental-injection-parsing-rewrite),
we can now do combined injections which lets us pull in some templating
grammars. The most notable of those is embedded-template - a pretty
straightforward grammar that covers ERB and EJS.
The grammar and highlights queries are shared between the two but they have
different injections.
