jsonc_parser/
common.rs

1/// Positional information about a start and end point in the text.
2#[derive(Debug, PartialEq, Clone, Copy)]
3pub struct Range {
4  /// Start position of the node in the text.
5  pub start: usize,
6  /// End position of the node in the text.
7  pub end: usize,
8}
9
10impl Range {
11  pub fn new(start: usize, end: usize) -> Self {
12    Range { start, end }
13  }
14
15  pub fn from_byte_index(pos: usize) -> Self {
16    Range::new(pos, pos)
17  }
18}
19
20impl Ranged for Range {
21  fn range(&self) -> Range {
22    *self
23  }
24}
25
26/// Represents an object that has a range in the text.
27pub trait Ranged {
28  /// Gets the range.
29  fn range(&self) -> Range;
30
31  /// Gets the byte index of the first character in the text.
32  fn start(&self) -> usize {
33    self.range().start
34  }
35
36  /// Gets the byte index after the last character in the text.
37  fn end(&self) -> usize {
38    self.range().end
39  }
40
41  /// Gets the text from the provided string.
42  fn text<'a>(&self, text: &'a str) -> &'a str {
43    let range = self.range();
44    &text[range.start..range.end]
45  }
46
47  /// Gets the end byte index minus the start byte index of the range.
48  fn width(&self) -> usize {
49    let range = self.range();
50    range.end - range.start
51  }
52}
jsonc_parser/common.rs

jsonc_parser/
common.rs
