yerba 0.9.0

YAML Editing and Refactoring with Better Accuracy
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use crate::syntax::is_control_character;

#[derive(Debug, Clone)]
pub struct ControlCharacter {
  pub character: char,
  pub line: usize,
  pub column: usize,
}

impl std::fmt::Display for ControlCharacter {
  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
    write!(f, "U+{:04X} at line {}, column {}", self.character as u32, self.line, self.column)
  }
}

pub fn find_control_characters(source: &str) -> Vec<ControlCharacter> {
  source
    .lines()
    .enumerate()
    .flat_map(|(index, line)| {
      line.chars().enumerate().filter_map(move |(column, character)| {
        is_control_character(character).then_some(ControlCharacter {
          character,
          line: index + 1,
          column: column + 1,
        })
      })
    })
    .collect()
}