diff options
Diffstat (limited to 'src/grid.rs')
| -rw-r--r-- | src/grid.rs | 230 |
1 files changed, 1 insertions, 229 deletions
diff --git a/src/grid.rs b/src/grid.rs index 37c9dee6..b47be7ca 100644 --- a/src/grid.rs +++ b/src/grid.rs @@ -28,235 +28,7 @@ use std::borrow::ToOwned; use util::Rotate; -/// Indexing types and implementations for Grid and Line -pub mod index { - use std::fmt; - use std::iter::Step; - use std::num::{One, Zero}; - use std::ops::{self, Deref, Add}; - - /// Index in the grid using row, column notation - #[derive(Debug, Clone, Default, Eq, PartialEq)] - pub struct Cursor { - pub line: Line, - pub col: Column, - } - - /// A line - /// - /// Newtype to avoid passing values incorrectly - #[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Ord, PartialOrd)] - pub struct Line(pub usize); - - impl fmt::Display for Line { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - write!(f, "Line({})", self.0) - } - } - - /// A column - /// - /// Newtype to avoid passing values incorrectly - #[derive(Debug, Copy, Clone, Eq, PartialEq, Default, Ord, PartialOrd)] - pub struct Column(pub usize); - - impl fmt::Display for Column { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - write!(f, "Column({})", self.0) - } - } - - /// Copyright 2015 The Rust Project Developers. See the COPYRIGHT - /// file at the top-level directory of this distribution and at - /// http://rust-lang.org/COPYRIGHT. - /// - /// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or - /// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license - /// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your - /// option. This file may not be copied, modified, or distributed - /// except according to those terms. - /// - /// implements binary operators "&T op U", "T op &U", "&T op &U" - /// based on "T op U" where T and U are expected to be `Copy`able - macro_rules! forward_ref_binop { - (impl $imp:ident, $method:ident for $t:ty, $u:ty) => { - impl<'a> $imp<$u> for &'a $t { - type Output = <$t as $imp<$u>>::Output; - - #[inline] - fn $method(self, other: $u) -> <$t as $imp<$u>>::Output { - $imp::$method(*self, other) - } - } - - impl<'a> $imp<&'a $u> for $t { - type Output = <$t as $imp<$u>>::Output; - - #[inline] - fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { - $imp::$method(self, *other) - } - } - - impl<'a, 'b> $imp<&'a $u> for &'b $t { - type Output = <$t as $imp<$u>>::Output; - - #[inline] - fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { - $imp::$method(*self, *other) - } - } - } - } - - /// Macro for deriving deref - macro_rules! deref { - ($ty:ty, $target:ty) => { - impl Deref for $ty { - type Target = $target; - - #[inline] - fn deref(&self) -> &$target { - &self.0 - } - } - } - } - - macro_rules! add { - ($ty:ty, $construct:expr) => { - impl ops::Add<$ty> for $ty { - type Output = $ty; - - #[inline] - fn add(self, rhs: $ty) -> $ty { - $construct(self.0 + rhs.0) - } - } - } - } - - macro_rules! sub { - ($ty:ty, $construct:expr) => { - impl ops::Sub<$ty> for $ty { - type Output = $ty; - - #[inline] - fn sub(self, rhs: $ty) -> $ty { - $construct(self.0 - rhs.0) - } - } - } - } - - macro_rules! zero_one { - ($ty:ty, $construct:expr) => { - impl One for $ty { - fn one() -> $ty { - $construct(1) - } - } - - impl Zero for $ty { - fn zero() -> $ty { - $construct(0) - } - } - } - } - - macro_rules! ops { - ($ty:ty, $construct:expr) => { - add!($ty, $construct); - sub!($ty, $construct); - zero_one!($ty, $construct); - deref!($ty, usize); - forward_ref_binop!(impl Add, add for $ty, $ty); - - impl Step for $ty { - fn step(&self, by: &$ty) -> Option<$ty> { - Some(*self + *by) - } - - #[inline] - #[allow(trivial_numeric_casts)] - fn steps_between(start: &$ty, end: &$ty, by: &$ty) -> Option<usize> { - if *by == $construct(0) { return None; } - if *start < *end { - // Note: We assume $t <= usize here - let diff = (*end - *start).0; - let by = by.0; - if diff % by > 0 { - Some(diff / by + 1) - } else { - Some(diff / by) - } - } else { - Some(0) - } - } - } - - impl ops::AddAssign<$ty> for $ty { - #[inline] - fn add_assign(&mut self, rhs: $ty) { - self.0 += rhs.0 - } - } - - impl ops::SubAssign<$ty> for $ty { - #[inline] - fn sub_assign(&mut self, rhs: $ty) { - self.0 -= rhs.0 - } - } - - impl ops::AddAssign<usize> for $ty { - #[inline] - fn add_assign(&mut self, rhs: usize) { - self.0 += rhs - } - } - - impl ops::SubAssign<usize> for $ty { - #[inline] - fn sub_assign(&mut self, rhs: usize) { - self.0 -= rhs - } - } - - impl From<usize> for $ty { - #[inline] - fn from(val: usize) -> $ty { - $construct(val) - } - } - - impl ops::Add<usize> for $ty { - type Output = $ty; - - #[inline] - fn add(self, rhs: usize) -> $ty { - $construct(self.0 + rhs) - } - } - - impl ops::Sub<usize> for $ty { - type Output = $ty; - - #[inline] - fn sub(self, rhs: usize) -> $ty { - $construct(self.0 - rhs) - } - } - } - } - - ops!(Line, Line); - ops!(Column, Column); -} - -use self::index::Cursor; +use index::{self, Cursor}; /// Represents the terminal display contents #[derive(Clone)] |