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#[derive(Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
pub struct CCursor {
pub index: usize,
pub prefer_next_row: bool,
}
impl CCursor {
pub fn new(index: usize) -> Self {
Self {
index,
prefer_next_row: false,
}
}
}
impl PartialEq for CCursor {
fn eq(&self, other: &CCursor) -> bool {
self.index == other.index
}
}
impl std::ops::Add<usize> for CCursor {
type Output = CCursor;
fn add(self, rhs: usize) -> Self::Output {
CCursor {
index: self.index.saturating_add(rhs),
prefer_next_row: self.prefer_next_row,
}
}
}
impl std::ops::Sub<usize> for CCursor {
type Output = CCursor;
fn sub(self, rhs: usize) -> Self::Output {
CCursor {
index: self.index.saturating_sub(rhs),
prefer_next_row: self.prefer_next_row,
}
}
}
impl std::ops::AddAssign<usize> for CCursor {
fn add_assign(&mut self, rhs: usize) {
self.index = self.index.saturating_add(rhs);
}
}
impl std::ops::SubAssign<usize> for CCursor {
fn sub_assign(&mut self, rhs: usize) {
self.index = self.index.saturating_sub(rhs);
}
}
#[derive(Clone, Copy, Debug, Default, PartialEq)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
pub struct RCursor {
pub row: usize,
pub column: usize,
}
#[derive(Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
pub struct PCursor {
pub paragraph: usize,
pub offset: usize,
pub prefer_next_row: bool,
}
impl PartialEq for PCursor {
fn eq(&self, other: &PCursor) -> bool {
self.paragraph == other.paragraph && self.offset == other.offset
}
}
#[derive(Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
pub struct Cursor {
pub ccursor: CCursor,
pub rcursor: RCursor,
pub pcursor: PCursor,
}