Commit Graph

689 Commits (8cb7cdfd7a01b9cb50b9142e9a5d133bd1e23256)

Author SHA1 Message Date
Kyle Smith 3849ca4c2a
Add test cases for existing pair matching logic. (#6027)
* Add test cases for existing pair matching logic.

* fix clippy
2 years ago
Clément Delafargue 8dd1ab4899
Softwrapping improvements (#5893)
* use max_line_width + 1 during softwrap to account for newline char

Helix softwrap implementation always wraps lines so that the newline
character doesn't get cut off so he line wraps one chars earlier then
in other editors. This is necessary, because newline chars are always
selecatble in helix and must never be hidden.

However That means that `max_line_width` currently wraps one char
earlier than expected. The typical definition of line width does not
include the newline character and other helix commands like `:reflow`
also don't count the newline character here.

This commit makes softwrap use `max_line_width + 1` instead of
`max_line_width` to correct the impedance missmatch.

* fix typos

Co-authored-by: Jonathan Lebon <jonathan@jlebon.com>

* Add text-width to config.toml

* text-width: update setting documentation

* rename leftover config item

* remove leftover max-line-length occurrences

* Make `text-width` optional in editor config

When it was only used for `:reflow` it made sense to have a default
value set to `80`, but now that soft-wrapping uses this setting, keeping
a default set to `80` would make soft-wrapping behave more aggressively.

* Allow softwrapping to ignore `text-width`

Softwrapping wraps by default to the viewport width or a configured
`text-width` (whichever's smaller). In some cases we only want to set
`text-width` to use for hard-wrapping and let longer lines flow if they
have enough space. This setting allows that.

* Revert "Make `text-width` optional in editor config"

This reverts commit b247d526d6.

* soft-wrap: allow per-language overrides

* Update book/src/configuration.md

Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de>

* Update book/src/languages.md

Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de>

* Update book/src/configuration.md

Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de>

---------

Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de>
Co-authored-by: Jonathan Lebon <jonathan@jlebon.com>
Co-authored-by: Alex Boehm <alexb@ozrunways.com>
Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
2 years ago
Urgau ec6e575a40 Correctly handle multiple cursors with LSP snippets 2 years ago
Alexandr 8043959265
Doc string fix in selection.rs (#6077)
* Doc string fix

Delete duplicate `the`

* selection.rs doc string wording

* Remove extra whitespace at end of doc text

---------

Co-authored-by: Ivan Tham <pickfire@riseup.net>
2 years ago
Triton171 a1a6d5f334
Replace incorrect usages of tab_width with indent_width. (#5918) 2 years ago
Mike Trinkala ef221abe83
Prevent a panic when uncommenting a line with only a comment token (#5933)
Open a new document `test.rs` and type the following:
`di//<esc><C-c>`

The margin calculation pushes the range out of bounds for the comment
marker when there are no characters (newline) after it.

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value:
Char range out of bounds: char range 0..3,
Rope/RopeSlice char length 2', ropey-1.6.0/src/rope.rs:546:37

The debug build catches the error in the transaction: thread 'main'
panicked at 'attempt to subtract with overflow',
helix-core/src/transaction.rs:503:26
2 years ago
Daniel S Poulin 6929a12f29
Make `m` textobject look for pairs enclosing selections (#3344)
* Make `m` textobject look for pairs enclosing selections

Right now, this textobject only looks for pairs that surround the
cursor. This ensures that the pair found encloses each selection, which
is likely to be intuitively what is expected of this textobject.

* Simplification of match code

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* Adjust logic for ensuring surround range encloses selection

Prior, it was missing the case where the start of the selection came
before the opening brace. We also had an off-by-one error where if the
end of the selection was on the closing brace it would not work.

* Refactor to search for the open pair specifically to avoid edge cases

* Adjust wording of autoinfo to reflect new functionality

* Implement tests for surround functionality in new integration style

* Fix handling of skip values

* Fix out of bounds error

* Add `ma` version of tests

* Fix formatting of tests

* Reduce indentation levels for readability, and update comments

* Preserve each selection's direction with enclosing pair surround

* Add test case for multiple cursors resulting in overlap

* Mark known failures as TODO

* Make tests multi-threaded or they fail

* Cargo fmt

* Fix typos in integration test comments

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
2 years ago
Pascal Kuthe 8a3ec443f1
Fix new clippy lints (#5892) 2 years ago
Pascal Kuthe 7ebcf4e919
properly handle LSP position encoding (#5711)
* properly handle LSP position encoding

* add debug assertion to Transaction::change

* Apply suggestions from code review

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
2 years ago
Mike Trinkala c704701714
Short-circuit the word and treesitter object movement commands (#5851)
The loop always iterates the number of times the user specified even
if the beginning/end of the document is reached.

For an extreme demonstration try the following commands, Helix will
hang for several seconds.
100000000w
100000000]c
2 years ago
dependabot[bot] 7f6a91fd63
build(deps): bump ropey from 1.5.1 to 1.6.0 (#5859)
Bumps [ropey](https://github.com/cessen/ropey) from 1.5.1 to 1.6.0.
- [Release notes](https://github.com/cessen/ropey/releases)
- [Changelog](https://github.com/cessen/ropey/blob/master/CHANGELOG.md)
- [Commits](https://github.com/cessen/ropey/compare/v1.5.1...v1.6.0)

---
updated-dependencies:
- dependency-name: ropey
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2 years ago
Mike Trinkala 62d046fa21
Fix utf8 length handling for shellwords (#5738)
If the last argument to shellwords ends in a multibyte utf8 character
the entire argument will be dropped.
e.g. `:sh echo test1 test2𒀀` will only output `test1`

Add additional tests based on the code review feedback
2 years ago
Michael Davis d5f17d3f69
Fix initial highlight layer sort order (#5196)
The purpose of this change is to remove the mutable self borrow on
`HighlightIterLayer::sort_key` so that we can sort layers with the
correct ordering using the `Vec::sort` function family.
`HighlightIterLayer::sort_key` needs `&mut self` since it calls
`Peekable::peek` which needs `&mut self`. `Vec::sort` functions
only give immutable borrows of the elements to ensure the
correctness of the sort.

We could instead approach this by creating an eager Peekable and using
that instead of `std::iter::Peekable` to wrap `QueryCaptures`:

```rust
struct EagerPeekable<I: Iterator> {
    iter: I,
    peeked: Option<I::Item>,
}

impl<I: Iterator> EagerPeekable<I> {
    fn new(mut iter: I) -> Self {
        let peeked = iter.next();
        Self { iter, peeked }
    }

    fn peek(&self) -> Option<&I::Item> {
        self.peeked.as_ref()
    }
}

impl<I: Iterator> Iterator for EagerPeekable<I> {
    type Item = I::Item;

    fn next(&mut self) -> Option<Self::Item> {
        std::mem::replace(&mut self.peeked, self.iter.next())
    }
}
```

This would be a cleaner approach (notice how `EagerPeekable::peek`
takes `&self` rather than `&mut self`), however this doesn't work in
practice because the Items emitted by the `tree_sitter::QueryCaptures`
Iterator must be consumed before the next Item is returned.
`Iterator::next` on `tree_sitter::QueryCaptures` modifies the
`QueryMatch` returned by the last call of `next`. This behavior is
not currently reflected in the lifetimes/structure of `QueryCaptures`.

This fixes an issue with layers being out of order when using combined
injections since the old code only checked the first range in the
layer. Layers being out of order could cause missing highlights for
combined-injections content.
2 years ago
Pascal Kuthe 4dcf1fe66b
rework positioning/rendering and enable softwrap/virtual text (#5420)
* rework positioning/rendering, enables softwrap/virtual text

This commit is a large rework of the core text positioning and
rendering code in helix to remove the assumption that on-screen
columns/lines correspond to text columns/lines.

A generic `DocFormatter` is introduced that positions graphemes on
and is used both for rendering and for movements/scrolling.
Both virtual text support (inline, grapheme overlay and multi-line)
and a capable softwrap implementation is included.

fix picker highlight

cleanup doc formatter, use word bondaries for wrapping

make visual vertical movement a seperate commnad

estimate line gutter width to improve performance

cache cursor position

cleanup and optimize doc formatter

cleanup documentation

fix typos

Co-authored-by: Daniel Hines <d4hines@gmail.com>

update documentation

fix panic in last_visual_line funciton

improve soft-wrap documentation

add extend_visual_line_up/down commands

fix non-visual vertical movement

streamline virtual text highlighting, add softwrap indicator

fix cursor position if softwrap is disabled

improve documentation of text_annotations module

avoid crashes if view anchor is out of bounds

fix: consider horizontal offset when traslation char_idx -> vpos

improve default configuration

fix: mixed up horizontal and vertical offset

reset view position after config reload

apply suggestions from review

disabled softwrap for very small screens to avoid endless spin

fix wrap_indicator setting

fix bar cursor disappearring on the EOF character

add keybinding for linewise vertical movement

fix: inconsistent gutter highlights

improve virtual text API

make scope idx lookup more ergonomic

allow overlapping overlays

correctly track char_pos for virtual text

adjust configuration

deprecate old position fucntions

fix infinite loop in highlight lookup

fix gutter style

fix formatting

document max-line-width interaction with softwrap

change wrap-indicator example to use empty string

fix: rare panic when view is in invalid state (bis)

* Apply suggestions from code review

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* improve documentation for positoning functions

* simplify tests

* fix documentation of Grapheme::width

* Apply suggestions from code review

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* add explicit drop invocation

* Add explicit MoveFn type alias

* add docuntation to Editor::cursor_cache

* fix a few typos

* explain use of allow(deprecated)

* make gj and gk extend in select mode

* remove unneded debug and TODO

* mark tab_width_at #[inline]

* add fast-path to move_vertically_visual in case softwrap is disabled

* rename first_line to first_visual_line

* simplify duplicate if/else

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
2 years ago
dependabot[bot] 9d22c64c78
build(deps): bump ahash from 0.8.2 to 0.8.3 (#5743)
Bumps [ahash](https://github.com/tkaitchuck/ahash) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/tkaitchuck/ahash/releases)
- [Commits](https://github.com/tkaitchuck/ahash/compare/v0.8.2...v0.8.3)

---
updated-dependencies:
- dependency-name: ahash
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2 years ago
alice 8b25f44f05
build(deps): bump toml from 0.6.0 to 0.7.0 (#5726) 2 years ago
Michael Davis b3e9f6233a Fix compatibility with toml 0.6.0
`toml::from_slice` has been removed. The CHANGELOG recommends using
`toml::from_str` instead and doing the byte-to-str conversion yourself.

The `toml::toml!` macro has also changed to return the type of the
value declared within the macro body. In the change in
`helix-view/src/theme.rs` this is a `toml::map::Map` (it was a
`toml::Value` previously) allowing us to skip the match and use the
map directly.

Co-authored-by: Pascal Kuthe <pascal.kuthe@semimod.de>
2 years ago
dependabot[bot] 52d854fa62 build(deps): bump toml from 0.5.10 to 0.6.0
Bumps [toml](https://github.com/toml-rs/toml) from 0.5.10 to 0.6.0.
- [Release notes](https://github.com/toml-rs/toml/releases)
- [Commits](https://github.com/toml-rs/toml/compare/toml-v0.5.10...toml-v0.6.0)

---
updated-dependencies:
- dependency-name: toml
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
2 years ago
dependabot[bot] 6317e0a715
build(deps): bump hashbrown from 0.13.1 to 0.13.2 (#5559)
Bumps [hashbrown](https://github.com/rust-lang/hashbrown) from 0.13.1 to 0.13.2.
- [Release notes](https://github.com/rust-lang/hashbrown/releases)
- [Changelog](https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/hashbrown/compare/v0.13.1...v0.13.2)

---
updated-dependencies:
- dependency-name: hashbrown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2 years ago
greg-enbala 60f84be40c
Separate jump behavior from increment/decrement (#4123)
increment/decrement (C-a/C-x) had some buggy behavior where selections
could be offset incorrectly or the editor could panic with some edits
that changed the number of characters in a number or date. These stemmed
from the automatic jumping behavior which attempted to find the next
date or integer to increment. The jumping behavior also complicated the
code quite a bit and made the behavior somewhat difficult to predict
when using many cursors.

This change removes the automatic jumping behavior and only increments
or decrements when the full text in a range of a selection is a number
or date. This simplifies the code and fixes the panics and buggy
behaviors from changing the number of characters.
2 years ago
dependabot[bot] 8079abffc3
build(deps): bump ropey from 1.5.1-alpha to 1.5.1 (#5374)
Bumps [ropey](https://github.com/cessen/ropey) from 1.5.1-alpha to 1.5.1.
- [Release notes](https://github.com/cessen/ropey/releases)
- [Changelog](https://github.com/cessen/ropey/blob/master/CHANGELOG.md)
- [Commits](https://github.com/cessen/ropey/commits/v1.5.1)

---
updated-dependencies:
- dependency-name: ropey
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2 years ago
dependabot[bot] d6d6267378
build(deps): bump once_cell from 1.16.0 to 1.17.0 (#5373)
Bumps [once_cell](https://github.com/matklad/once_cell) from 1.16.0 to 1.17.0.
- [Release notes](https://github.com/matklad/once_cell/releases)
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/matklad/once_cell/compare/v1.16.0...v1.17.0)

---
updated-dependencies:
- dependency-name: once_cell
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2 years ago
Triton171 5f2fe5fca5
Fix erroneous indent between closers of auto-pairs (#5330)
inserting a newline between 2 closers of an auto-pair.
2 years ago
DylanBulfin 1107296ca9
Add command to merge consecutive ranges in selection (#5047) 2 years ago
Pascal Kuthe 70d78123b9
properly handle detachted git worktrees (#5097) 2 years ago
TotalKrill 16e13b9789
allow specifying environment for language servers in language.toml (#4004)
Signed-off-by: Stephen Wakely <fungus.humungus@gmail.com>
Co-authored-by: Stephen Wakely <fungus.humungus@gmail.com>
Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
2 years ago
Michael Davis bcdb475b71
Fix transaction composition order in History::changes_since (#4981)
* Add a undo/redo split test case for crossing branches

* history: Switch up/down transaction chaining order

The old code tends to work in practice because, usually, either up_txns
or down_txns are empty. When both have contents though, we can run into
a panic trying to compose them all since they will disagree on the
length of the text. This fixes the panic test case in the parent
commit.
2 years ago
sigmaSd 4960c41f18
feat(lsp): add support for lsp Diagnostic{}.data (#4935) 2 years ago
Pascal Kuthe 5a3ff74221
Show (git) diff signs in gutter (#3890)
* Show (git) diff signs in gutter (#3890)

Avoid string allocation when git diffing

Incrementally diff using changesets

refactor diffs to be provider indepndent and improve git implementation

remove dependency on zlib-ng

switch to asynchronus diffing with similar

Update helix-vcs/Cargo.toml

fix toml formatting

Co-authored-by: Ivan Tham <pickfire@riseup.net>

fix typo in documentation

use ropey reexpors from helix-core

fix crash when creating new file

remove useless use if io::Cursor

fix spelling mistakes

implement suggested improvement to repository loading

improve git test isolation

remove lefover comments

Co-authored-by: univerz <univerz@fu-solution.com>

fixed spelling mistake

minor cosmetic changes

fix: set self.differ to None if decoding the diff_base fails

fixup formatting

Co-authored-by: Ivan Tham <pickfire@riseup.net>

reload diff_base when file is reloaded from disk

switch to imara-diff

Fixup formatting

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

Redraw buffer whenever a diff is updated.

Only store hunks instead of changes for individual lines to easily allow
jumping between them

Update to latest gitoxide version

Change default diff gutter position

Only update gutter after timeout

* update diff gutter synchronously, with a timeout

* Apply suggestions from code review

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* address review comments and ensure lock is always aquired

* remove configuration for redraw timeout

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
2 years ago
Michael Davis 9387dfafed Use lowest common ancestor search in History::changes_since 2 years ago
Kirawi 04df9e4445
delete outdated reference to cessen/ropey#25 (#4928) 2 years ago
Pascal Kuthe da355a3231
Significantly improve performance of `:reload` (#4457)
* bump ropey to 1.5.1-alpha

* significantly improve performance of :reload
2 years ago
Pascal Kuthe a549328ef2
bump ropey to 1.5.1-alpha 2 years ago
Michael Davis a3f321a531 Follow parent links when calculating changes since a revision
The 'revisions' field on History can't be treated as linear: each
Revision in the revisions Vec has a parent link and an optional child
link. We can follow those to unroll the recent history.
2 years ago
Michael Davis 4a103db622 Apply inversions to Views on undo/redo
When using undo/redo, the history revision can be decremented. In that
case we should apply the inversions since the given revision in
History::changes_since. This prevents panics with jumplist operations
when a session uses undo/redo to move the jumplist selection outside
of the document.
2 years ago
Michael Davis 42e37a571e
Apply transactions to all views (#4733)
* Add a test case for updating jumplists across windows

* Apply transactions to all views on history changes

This ensures that jumplist selections follow changes in documents, even
when there are multiple views (for example a split where both windows
edit the same document).

* Leave TODOs for cleaning up View::apply

* Use Iterator::reduce to compose history transactions

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
2 years ago
Pascal Kuthe f538b69759
significantly improve treesitter performance while editing large files (#4716)
* significantly improve treesitter performance while editing large files

* Apply stylistic suggestions from code review

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

* use PartialEq and Hash instead of a freestanding function

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
2 years ago
Michael Davis 0b2bb061b9
Bump TREE_SITTER_MATCH_LIMIT to 256 (#4830)
The limit of 64 breaks some highlighting in Erlang files with
complicated record definitions. Bumping to 256  seems to work on all
files I have seen.
2 years ago
Michael Davis 94346356e7
Use TreeCursor to pretty-print :tree-sitter-subtree (#4606)
The current `:tree-sitter-subtree` has a bug for field-names when the
field name belongs to an unnamed child node. Take this ruby example:

    def self.method_name
      true
    end

The subtree given by tree-sitter-cli is:

    (singleton_method [2, 0] - [4, 3]
      object: (self [2, 4] - [2, 8])
      name: (identifier [2, 9] - [2, 20])
      body: (body_statement [3, 2] - [3, 6]
        (true [3, 2] - [3, 6])))

But the `:tree-sitter-subtree` output was

    (singleton_method
      object: (self)
      body: (identifier)
      (body_statement (true)))

The `singleton_method` rule defines the `name` and `body` fields in an
unnamed helper rule `_method_rest` and the old implementation of
`pretty_print_tree_impl` would pass the `field_name` down from the
named `singleton_method` node.

To fix it we switch to the [TreeCursor] API which is recommended by
the tree-sitter docs for traversing the tree. `TreeCursor::field_name`
accurately determines the field name for the current cursor position
even when the node is unnamed.

[TreeCursor]: https://docs.rs/tree-sitter/0.20.9/tree_sitter/struct.TreeCursor.html
2 years ago
Michael Davis c6b83368b3
Capture word parts while calculating shellwords (#4632)
This fixes an edge case for completing shellwords. With a file
"a b.txt" in the current directory, the sequence `:open a\<tab>`
will result in the prompt containing `:open aa\ b.txt`. This is
because the length of the input which is trimmed when replacing with
completion is calculated on the part of the input which is parsed by
shellwords and then escaped (in a separate operation), which is lossy.
In this case it loses the trailing backslash.

The fix provided here refactors shellwords to track both the _words_
(shellwords with quotes and escapes resolved) and the _parts_ (chunks
of the input which turned into each word, with separating whitespace
removed). When calculating how much of the input to delete when
replacing with the completion item, we now use the length of the last
part.

This also allows us to eliminate the duplicate work done in the
`ends_with_whitespace` check.
2 years ago
dxtr85 888368dae9
Fix deprecation warnings for chrono 0.4.23 (#4738)
Co-authored-by: dxtr <dxtr@W540.mito>
2 years ago
ath3 3b7760dfb0
Refactor blackhole register (#4504) 2 years ago
Alexis (Poliorcetics) Bourget 53b70d821e deps: Update tree-sitter-rust (supports let-else && let-chains) 2 years ago
Pascal Kuthe bb5a122cde
improve performance of tree sitter query captures (for text object motions in particular) (#4707)
* add tree sitter match limit to avoid slowdowns for larger files

Affects all tree sitter queries and should speedup both
syntax highlighting and text object queries.
This has been shown to fix significant slowdowns with textobjects
for rust files as small as 3k loc.

* Apply suggestions from code review

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>
2 years ago
Michael Davis 3e84434c69 Fix panic from indenting on tree with errors
`deepest_preceding` is known to be a descendant of `node`. Repeated
calls of `Node::parent` _should_ eventually turn `deepest_preceding`
into `node`, but when the node is errored (the tree contains a syntax
error), `Node::parent` returns None.

In the typescript case:

    if(true) &&true
    //      ^ press enter here

The tree is:

    (program [0, 0] - [1, 0]
      (if_statement [0, 0] - [0, 15]
        condition: (parenthesized_expression [0, 2] - [0, 8]
          (true [0, 3] - [0, 7]))
        consequence: (expression_statement [0, 8] - [0, 15]
          (binary_expression [0, 8] - [0, 15]
            left: (identifier [0, 8] - [0, 8])
            right: (true [0, 11] - [0, 15])))))

`node` is the `program` node and `deepest_preceding` is the
`binary_expression`. The tree is errored on the `binary_expression`
node with `(MISSING identifier [0, 8] - [0, 8])`.

In the C++ case:

    ; <<
    // press enter after the ';'

The tree is:

    (translation_unit [0, 0] - [1, 0]
      (expression_statement [0, 0] - [0, 1])
      (ERROR [0, 1] - [0, 4]
        (identifier [0, 1] - [0, 1])))

`node` is the `translation_unit` and `deepest_preceding` is the `ERROR`
node.

In both cases, `Node::parent` on the errored node returns None.
2 years ago
Michael Davis 260ae3a0f4 style: Only call extend_nodes when deepest_preceding is Some 2 years ago
Blaž Hrastnik bb303cf41d
fix tests 2 years ago
Blaž Hrastnik cd8bbbc044
fix tests 2 years ago
Blaž Hrastnik c94feed83d
core: Move state into the history module 2 years ago
Jonathan LEI eddf9f0b7f
Run clippy on workspace in CI (#4614) 2 years ago