use super::*;

/// A single line in a recipe body, consisting of any number of `Fragment`s.
#[derive(Debug, Clone, PartialEq, Serialize)]
#[serde(transparent)]
pub(crate) struct Line<'src> {
  pub(crate) fragments: Vec<Fragment<'src>>,
}

impl<'src> Line<'src> {
  pub(crate) fn is_empty(&self) -> bool {
    self.fragments.is_empty()
  }

  pub(crate) fn is_comment(&self) -> bool {
    matches!(
      self.fragments.first(),
      Some(Fragment::Text { token }) if token.lexeme().starts_with('#'),
    )
  }

  pub(crate) fn is_continuation(&self) -> bool {
    matches!(
      self.fragments.last(),
      Some(Fragment::Text { token }) if token.lexeme().ends_with('\\'),
    )
  }

  pub(crate) fn is_shebang(&self) -> bool {
    matches!(
      self.fragments.first(),
      Some(Fragment::Text { token }) if token.lexeme().starts_with("#!"),
    )
  }

  pub(crate) fn is_quiet(&self) -> bool {
    matches!(
      self.fragments.first(),
      Some(Fragment::Text { token })
        if token.lexeme().starts_with('@') || token.lexeme().starts_with("-@"),
    )
  }

  pub(crate) fn is_infallible(&self) -> bool {
    matches!(
      self.fragments.first(),
      Some(Fragment::Text { token })
        if token.lexeme().starts_with('-') || token.lexeme().starts_with("@-"),
    )
  }
}