add Range::{from_node,into_byte_range}

helix-core/src/selection.rs

@@ -14,6 +14,7 @@ use crate::{
 use helix_stdx::rope::{self, RopeSliceExt};
 use smallvec::{smallvec, SmallVec};
 use std::borrow::Cow;
+use tree_sitter::Node;
 
 /// A single selection range.
 ///
@@ -73,6 +74,12 @@ impl Range {
  Self::new(head, head)
  }
 
+ pub fn from_node(node: Node, text: RopeSlice, direction: Direction) -> Self {
+ let from = text.byte_to_char(node.start_byte());
+ let to = text.byte_to_char(node.end_byte());
+ Range::new(from, to).with_direction(direction)
+ }
+
  /// Start of the range.
  #[inline]
  #[must_use]
@@ -376,6 +383,12 @@ impl Range {
  let second = graphemes.next();
  first.is_some() && second.is_none()
  }
+
+ /// Converts this char range into an in order byte range, discarding
+ /// direction.
+ pub fn into_byte_range(&self, text: RopeSlice) -> (usize, usize) {
+ (text.char_to_byte(self.from()), text.char_to_byte(self.to()))
+ }
 }
 
 impl From<(usize, usize)> for Range {
@@ -783,7 +796,9 @@ pub fn split_on_newline(text: RopeSlice, selection: &Selection) -> Selection {
  let mut start = sel_start;
 
  for line in sel.slice(text).lines() {
- let Some(line_ending) = get_line_ending(&line) else { break };
+ let Some(line_ending) = get_line_ending(&line) else {
+ break;
+ };
  let line_end = start + line.len_chars();
  // TODO: retain range direction
  result.push(Range::new(start, line_end - line_ending.len_chars()));