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// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Defines the Row type which makes up lines in the grid
use std::ops::{Deref, DerefMut, Index, IndexMut};
use std::ops::{Range, RangeTo, RangeFrom, RangeFull};
use std::slice;
use index::Column;
/// A row in the grid
#[derive(Default, Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
pub struct Row<T>(Vec<T>);
impl<T: Copy + Clone> Row<T> {
pub fn new(columns: Column, template: &T) -> Row<T> {
Row(vec![*template; *columns])
}
pub fn grow(&mut self, cols: Column, template: &T) {
assert!(self.len() < * cols);
while self.len() != *cols {
self.0.push(*template);
}
}
/// Resets contents to the contents of `other`
#[inline]
pub fn reset(&mut self, other: &T) {
for item in &mut self.0 {
*item = *other;
}
}
}
impl<T> Row<T> {
pub fn shrink(&mut self, cols: Column) {
while self.len() != *cols {
self.pop();
}
}
}
impl<'a, T> IntoIterator for &'a Row<T> {
type Item = &'a T;
type IntoIter = slice::Iter<'a, T>;
#[inline]
fn into_iter(self) -> slice::Iter<'a, T> {
self.iter()
}
}
impl<'a, T> IntoIterator for &'a mut Row<T> {
type Item = &'a mut T;
type IntoIter = slice::IterMut<'a, T>;
#[inline]
fn into_iter(self) -> slice::IterMut<'a, T> {
self.iter_mut()
}
}
impl<T> Deref for Row<T> {
type Target = Vec<T>;
#[inline]
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl<T> DerefMut for Row<T> {
#[inline]
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl<T> Index<Column> for Row<T> {
type Output = T;
#[inline]
fn index(&self, index: Column) -> &T {
&self.0[index.0]
}
}
impl<T> IndexMut<Column> for Row<T> {
#[inline]
fn index_mut(&mut self, index: Column) -> &mut T {
&mut self.0[index.0]
}
}
// -----------------------------------------------------------------------------
// Index ranges of columns
// -----------------------------------------------------------------------------
impl<T> Index<Range<Column>> for Row<T> {
type Output = [T];
#[inline]
fn index(&self, index: Range<Column>) -> &[T] {
&self.0[(index.start.0)..(index.end.0)]
}
}
impl<T> IndexMut<Range<Column>> for Row<T> {
#[inline]
fn index_mut(&mut self, index: Range<Column>) -> &mut [T] {
&mut self.0[(index.start.0)..(index.end.0)]
}
}
impl<T> Index<RangeTo<Column>> for Row<T> {
type Output = [T];
#[inline]
fn index(&self, index: RangeTo<Column>) -> &[T] {
&self.0[..(index.end.0)]
}
}
impl<T> IndexMut<RangeTo<Column>> for Row<T> {
#[inline]
fn index_mut(&mut self, index: RangeTo<Column>) -> &mut [T] {
&mut self.0[..(index.end.0)]
}
}
impl<T> Index<RangeFrom<Column>> for Row<T> {
type Output = [T];
#[inline]
fn index(&self, index: RangeFrom<Column>) -> &[T] {
&self.0[(index.start.0)..]
}
}
impl<T> IndexMut<RangeFrom<Column>> for Row<T> {
#[inline]
fn index_mut(&mut self, index: RangeFrom<Column>) -> &mut [T] {
&mut self.0[(index.start.0)..]
}
}
impl<T> Index<RangeFull> for Row<T> {
type Output = [T];
#[inline]
fn index(&self, _: RangeFull) -> &[T] {
&self.0[..]
}
}
impl<T> IndexMut<RangeFull> for Row<T> {
#[inline]
fn index_mut(&mut self, _: RangeFull) -> &mut [T] {
&mut self.0[..]
}
}
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