devela/data/collections/stack/methods/own.rs
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// devela::data::collections::stack::methods_own
//
//! owning stack const operations, in compile-time
//! depends on T: Copy, S: Bare
//
// Algorithms are implemented in the unchecked versions by:
// - creating a copy of the inner array.
// - performing specific operations in it.
// - creating the new stack.
// - adjusting its length if necessary.
// - returning it.
use crate::{
cswap, sf, Bare, DataNotEnough, MismatchedCapacity, NotEnoughElements, NotEnoughSpace, Own,
Stack,
};
// helper macro to impl methods for a Stack with custom index size.
//
// $IDX : the index type. E.g. u8, usize
macro_rules! impl_stack {
() => {
impl_stack![own
u8:"_stack_u8", u16:"_stack_u16", u32:"_stack_u32", usize:"_stack_usize"];
};
// general own_ ops
//
// $IDX : the index type. E.g. u8, usize
// $cap: the capability feature that enables the given implementation. E.g "_stack_u8".
(own $( $IDX:ty: $cap:literal ),+) => {
$(
#[cfg(feature = $cap )]
impl_stack![@own $IDX:$cap];
)+
};
(@own $IDX:ty : $cap:literal) => { crate::paste! {
// T: Copy, S: Bare
/// # Chainable *const* operations depending on `T: Copy`
///
/// Every method is *const* and returns [`Own`][crate::Own]`<Self, V>`.
impl<T: Copy, const CAP: usize> Stack<T, CAP, $IDX, Bare> {
/* constructors */
/// Returns an empty stack, allocated in the stack,
/// copying `element` to fill the remaining free data.
///
/// # Errors
#[doc = "Returns [`MismatchedCapacity`] if `CAP > `[`" $IDX "::MAX`]"]
/// or if `CAP > isize::MAX / size_of::<T>()`.
///
/// # Examples
/// ```
#[doc = "# use devela::{Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 16> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s;"]
/// ```
pub const fn own_new(element: T) -> Own<Result<Self, MismatchedCapacity>, ()> {
Own::empty(Self::new_copied(element))
}
/* clear */
/// Clears the stack in compile-time.
///
/// `( 1 2 3 -- )`
/// # Examples
/// ```
#[doc = "# use devela::{Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 3> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3]).own_clear().s;"]
/// assert![S.is_empty()];
/// ```
pub const fn own_clear(self) -> Own<Self, ()> {
let mut sta = self;
sta.len = 0;
Own::empty(sta)
}
/* push */
/// Pushes a new `element` to the top of the stack in compile-time.
///
/// `( 1 -- 1 2 )`
/// # Errors
/// Returns `Own<S,`[`NotEnoughSpace`]`>` if the stack is full.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_push(1).v_assert_ok().s
/// .own_push(2).v_assert_ok().s;
/// assert_eq![S.as_slice(), &[1, 2]];
/// assert![S.own_push(3).v.is_err_and(|e| matches![e, NotEnoughSpace])];
/// ```
pub const fn own_push(self, element: T) -> Own<Self, Result<(), NotEnoughSpace>> {
if self.len as usize == CAP {
Own::new(self, Err(NotEnoughSpace(Some(1))))
} else {
self.own_push_unchecked(element).v_const_wrap_ok()
}
}
/// Pushes a new `element` to the top of the stack in compile-time, unchecked version.
///
/// `( 1 -- 1 2 )`
/// # Panics
/// Panics if the stack is full.
/// # Examples
/// ```
#[doc = "# use devela::Stack" $IDX:camel ";"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_push_unchecked(1).s.own_push_unchecked(2).s;
/// assert_eq![S.as_slice(), &[1, 2]];
/// ```
pub const fn own_push_unchecked(self, element: T) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
arr[self.len as usize] = element;
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 1;
Own::empty(sta)
}
/* pop */
/// Pops the top stack element in compile-time.
///
/// `( 1 2 3 -- 1 2 )`
/// # Errors
/// Returns `Own<S,`[`NotEnoughElements`]`>` if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::{NotEnoughElements, Own, Stack" $IDX:camel "};"]
#[doc = "const S: Own<Stack" $IDX:camel
"<i32, 3>, Result<i32, NotEnoughElements>> =\n"]
#[doc = " Stack" $IDX:camel "::from_array_copy([1, 2, 3]).own_pop();"]
/// S.s_assert(|s| s.as_slice() == &[1, 2]).v_assert_eq(&Ok(3));
/// ```
pub const fn own_pop(self) -> Own<Self, Result<T, NotEnoughElements>> {
if self.len == 0 {
Own::new(self, Err(NotEnoughElements(Some(1))))
} else {
self.own_pop_unchecked().v_const_wrap_ok()
}
}
/// Pops the top stack element in compile-time, unchecked version.
///
/// `( 1 2 3 -- 1 2 )`
/// # Panics
/// Panics if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Own<Stack" $IDX:camel "<i32, 3>, i32> =\n"]
#[doc = " Stack" $IDX:camel "::from_array_copy([1, 2, 3]).own_pop_unchecked();"]
/// S.s_assert(|s| s.as_slice() == &[1, 2]).v_assert_eq(&3);
/// ```
pub const fn own_pop_unchecked(self) -> Own<Self, T> {
let arr = self.data.into_array_copy();
let e = arr[self.len as usize - 1];
let mut sta = Self::from_array_copy(arr);
sta.len = self.len - 1;
Own::new(sta, e)
}
/* peek */
/// Peeks the top stack element in compile-time.
///
/// `( 1 2 3 -- 1 2 )`
/// # Errors
/// Returns `Own<S,`[`NotEnoughElements`]`>` if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::{NotEnoughElements, Own, Stack" $IDX:camel "};"]
#[doc = "const S: Own<Stack" $IDX:camel
"<i32, 3>, Result<i32, NotEnoughElements>> =\n"]
#[doc = " Stack" $IDX:camel "::from_array_copy([1, 2, 3]).own_peek();"]
/// S.s_assert(|s| s.as_slice() == &[1, 2, 3]).v_assert_eq(&Ok(3));
/// ```
pub const fn own_peek(self) -> Own<Self, Result<T, NotEnoughElements>> {
if self.len == 0 {
Own::new(self, Err(NotEnoughElements(Some(1))))
} else {
self.own_peek_unchecked().v_const_wrap_ok()
}
}
/// Peeks the top stack element in compile-time, unchecked version.
///
/// `( 1 2 3 -- 1 2 )`
/// # Panics
/// Panics if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Own<Stack" $IDX:camel "<i32, 3>, i32> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3])"]
/// .own_peek_unchecked();
/// S.s_assert(|s| s.as_slice() == &[1, 2, 3]).v_assert_eq(&3);
/// ```
pub const fn own_peek_unchecked(self) -> Own<Self, T> {
let arr = self.data.into_array_copy();
let e = arr[self.len as usize - 1];
let sta = Self::from_array_copy(arr);
Own::new(sta, e)
}
/* drop */
/// Drops the top stack element in compile-time.
///
/// `( 1 2 -- 1 )`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>` if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_drop().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[1]];
///
#[doc = "const T: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_drop().v_assert_err().s;
/// assert![T.is_empty()];
/// ```
pub const fn own_drop(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len == 0 {
Own::new(self, Err(NotEnoughElements(Some(1))))
} else {
self.own_drop_unchecked().v_const_wrap_ok()
}
}
/// Swaps the top two pair stack elements, unchecked version.
///
/// `( 1 2 -- 1 )`
/// # Panics
/// Panics if the stack is empty.
/// # Examples
/// ```
#[doc = "# use devela::Stack" $IDX:camel ";"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_drop_unchecked().s;
/// assert_eq![S.as_slice(), &[1]];
/// ```
pub const fn own_drop_unchecked(self) -> Own<Self, ()> {
let mut sta = self;
sta.len -= 1;
Own::empty(sta)
}
/// Drops the top `n` stack elements.
///
/// `( 1 2 3 4 -- 1 )` for `n == 3`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least `n` elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_drop_n(3).v_assert_ok().s;
/// assert_eq![S.as_slice(), &[1]];
/// ```
pub const fn own_drop_n(self, n: $IDX) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < n {
Own::new(self, Err(NotEnoughElements(Some(n as usize))))
} else {
self.own_drop_n_unchecked(n).v_const_wrap_ok()
}
}
/// Drops the top `n` stack elements, unchecked version.
///
/// `( 1 2 3 4 -- 1 )` for `n == 3`
/// # Panics
/// Panics if the stack doesn't contain at least `n` elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_drop_n_unchecked(3).s;
/// assert_eq![S.as_slice(), &[1]];
/// ```
pub const fn own_drop_n_unchecked(self, n: $IDX) -> Own<Self, ()> {
let mut sta = self;
sta.len -= n;
Own::empty(sta)
}
/* nip */
/// Drops the next of stack element in compile-time.
///
/// `( 1 2 -- 2 )`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 2 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_nip().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[2]];
///
#[doc = "const T: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_push(1).v_assert_ok().s.own_nip().v_assert_err().s;
/// assert_eq![T.as_slice(), &[1]];
/// ```
pub const fn own_nip(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 2 {
Own::new(self, Err(NotEnoughElements(Some(2))))
} else {
self.own_nip_unchecked().v_const_wrap_ok()
}
}
/// Drops the next of stack element in compile-time, unchecked version.
///
/// `( 1 2 -- 2 )`
/// # Panics
/// Panics if the stack doesn't contain at least 2 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_nip_unchecked().s;
/// assert_eq![S.as_slice(), &[2]];
/// ```
pub const fn own_nip_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
cswap![arr[self.len as usize - 2], arr[self.len as usize - 1]];
let mut sta = Self::from_array_copy(arr);
sta.len -= 1;
Own::empty(sta)
}
/// Drops the pair of next stack elements.
///
/// `( 1 2 3 4 -- 3 4 )`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 4 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_nip2().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[3, 4]];
/// ```
pub const fn own_nip2(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 4 {
Own::new(self, Err(NotEnoughElements(Some(4))))
} else {
self.own_nip2_unchecked().v_const_wrap_ok()
}
}
/// Drops the pair of next stack elements, unchecked version.
///
/// `( 1 2 3 4 -- 3 4 )`
/// # Panics
/// Panics if the stack doesn't contain at least 4 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_nip2_unchecked().s;
/// assert_eq![S.as_slice(), &[3, 4]];
/// ```
pub const fn own_nip2_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
cswap![arr[self.len as usize - 4], arr[self.len as usize - 2]];
cswap![arr[self.len as usize - 3], arr[self.len as usize - 1]];
let mut sta = Self::from_array_copy(arr);
sta.len -= 2;
Own::empty(sta)
}
/* swap */
/// Swaps the top two stack elements in compile-time.
///
/// `( 1 2 -- 2 1 )`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 2 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_swap().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[2, 1]];
///
#[doc = "const T: Stack" $IDX:camel "<i32, 1> = Stack" $IDX:camel
"::from_array_copy([1])"]
/// .own_swap().v_assert_err().s;
/// assert_eq![T.as_slice(), &[1]];
/// ```
pub const fn own_swap(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 2 {
Own::new(self, Err(NotEnoughElements(Some(2))))
} else {
self.own_swap_unchecked().v_const_wrap_ok()
}
}
/// Swaps the top two stack elements in compile-time, unchecked version.
///
/// `( 1 2 -- 2 1 )`
/// # Panics
/// Panics if the stack doesn't contain at least 2 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 2> = Stack" $IDX:camel
"::from_array_copy([1, 2])"]
/// .own_swap_unchecked().s;
/// assert_eq![S.as_slice(), &[2, 1]];
/// ```
pub const fn own_swap_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
cswap![arr[self.len as usize - 2], arr[self.len as usize - 1]];
Own::empty(Self::from_array_copy(arr))
}
/// Swaps the top two pair stack elements in compile-time.
///
/// `( 1 2 3 4 -- 3 4 1 2 )`
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 4 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_swap2().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[3, 4, 1, 2]];
///
#[doc = "const T: Stack" $IDX:camel "<i32, 3> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3])"]
/// .own_swap2().v_assert_err().s;
/// assert_eq![T.as_slice(), &[1, 2, 3]];
/// ```
pub const fn own_swap2(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 4 {
Own::new(self, Err(NotEnoughElements(Some(4))))
} else {
self.own_swap2_unchecked().v_const_wrap_ok()
}
}
/// Swaps the top two pair stack elements in compile-time, unchecked version.
///
/// `( 1 2 3 4 -- 3 4 1 2 )`
/// # Panics
/// Panics if the stack doesn't contain at least 4 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([1, 2, 3, 4])"]
/// .own_swap2_unchecked().s;
/// assert_eq![S.as_slice(), &[3, 4, 1, 2]];
/// ```
pub const fn own_swap2_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
cswap![arr[self.len as usize - 4], arr[self.len as usize - 2]];
cswap![arr[self.len as usize - 3], arr[self.len as usize - 1]];
Own::new(Self::from_array_copy(arr), ())
}
/* rot */
/// Rotates the top three stack elements, clockwise.
///
/// `( 1 2 3 -- 2 3 1 ) `
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 3 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3])"]
/// .own_rot().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 2, 3, 1]];
/// ```
pub const fn own_rot(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 3 {
Own::new(self, Err(NotEnoughElements(Some(3))))
} else {
self.own_rot_unchecked().v_const_wrap_ok()
}
}
/// Rotates the top three stack elements, clockwise, unchecked version.
///
/// `( 1 2 3 -- 2 3 1 ) `
/// # Panics
/// Panics if the stack doesn’t contain at least 6 elements.
/// if the stack doesn't contain at least 3 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3])"]
/// .own_rot_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 2, 3, 1]];
/// ```
// WAIT: [const_swap](https://github.com/rust-lang/rust/pull/134757)
pub const fn own_rot_unchecked(self) -> Own<Self, ()> {
let len = self.len as usize;
let mut arr = self.data.into_array_copy();
let [a, b, c] = [arr[len - 3], arr[len - 2], arr[len - 1]];
arr[len - 3] = b;
arr[len - 2] = c;
arr[len - 1] = a;
let sta = Self::from_array_copy(arr);
Own::empty(sta)
}
/// Rotates the top three stack elements, counter-clockwise.
///
/// `( 1 2 3 -- 3 1 2 ) `
/// # Errors
/// Returns `Own<S,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 3 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3])"]
/// .own_rot_cc().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 3, 1, 2]];
/// ```
pub const fn own_rot_cc(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 3 {
Own::new(self, Err(NotEnoughElements(Some(3))))
} else {
self.own_rot_cc_unchecked().v_const_wrap_ok()
}
}
/// Rotates the top three stack elements, counter-clockwise, unchecked version.
///
/// `( 1 2 3 -- 3 1 2 ) `
/// # Errors
/// Returns `Own<S,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 3 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3])"]
/// .own_rot_cc_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 3, 1, 2]];
/// ```
// WAIT: [const_swap](https://github.com/rust-lang/rust/pull/134757)
pub const fn own_rot_cc_unchecked(self) -> Own<Self, ()> {
let len = self.len as usize;
let mut arr = self.data.into_array_copy();
let [a, b, c] = [arr[len - 3], arr[len - 2], arr[len - 1]];
arr[len - 3] = c;
arr[len - 2] = a;
arr[len - 1] = b;
let sta = Self::from_array_copy(arr);
Own::empty(sta)
}
/// Rotates the top six stack elements, clockwise, two times.
///
/// `( 1 2 3 4 5 6 -- 3 4 5 6 1 2 ) `
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 6 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 5, 6])"]
/// .own_rot2().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 3, 4, 5, 6, 1, 2]];
/// ```
pub const fn own_rot2(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 6 {
Own::new(self, Err(NotEnoughElements(Some(6))))
} else {
self.own_rot2_unchecked().v_const_wrap_ok()
}
}
/// Rotates the top six stack elements, clockwise, two times, unchecked version.
///
/// `( 1 2 3 4 5 6 -- 3 4 5 6 1 2 ) `
/// # Panics
/// Panics if the stack doesn't contain at least 6 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 5, 6])"]
/// .own_rot2_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 3, 4, 5, 6, 1, 2]];
/// ```
// WAIT: [const_swap](https://github.com/rust-lang/rust/pull/134757)
pub const fn own_rot2_unchecked(self) -> Own<Self, ()> {
let len = self.len as usize;
let mut arr = self.data.into_array_copy();
let [a, b, c, d, e, f] = sf! {[
arr[len - 6], arr[len - 5], arr[len - 4], arr[len - 3], arr[len - 2], arr[len - 1],
]};
arr[len - 6] = c;
arr[len - 5] = d;
arr[len - 4] = e;
arr[len - 3] = f;
arr[len - 2] = a;
arr[len - 1] = b;
let sta = Self::from_array_copy(arr);
Own::empty(sta)
}
/// Rotates the top six stack elements, counter-clockwise, two times.
///
/// `( 1 2 3 4 5 6 -- 5 6 1 2 3 4 ) `
/// # Errors
/// Returns `Own<self,`[`NotEnoughElements`]`>`
/// if the stack doesn't contain at least 6 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 5, 6])"]
/// .own_rot2_cc().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 5, 6, 1, 2, 3, 4]];
/// ```
pub const fn own_rot2_cc(self) -> Own<Self, Result<(), NotEnoughElements>> {
if self.len < 6 {
Own::new(self, Err(NotEnoughElements(Some(6))))
} else {
self.own_rot2_cc_unchecked().v_const_wrap_ok()
}
}
/// Rotates the top six stack elements, counter-clockwise, two times, unchecked version.
///
/// `( 1 2 3 4 5 6 -- 5 6 1 2 3 4 ) `
/// # Panics
/// Panics if the stack doesn't contain at least 6 elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 5, 6])"]
/// .own_rot2_cc_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 5, 6, 1, 2, 3, 4]];
/// ```
// WAIT: [const_swap](https://github.com/rust-lang/rust/pull/134757)
pub const fn own_rot2_cc_unchecked(self) -> Own<Self, ()> {
let len = self.len as usize;
let mut arr = self.data.into_array_copy();
let [a, b, c, d, e, f] = sf! {[
arr[len - 6], arr[len - 5], arr[len - 4],
arr[len - 3], arr[len - 2], arr[len - 1]
]};
arr[len - 6] = e;
arr[len - 5] = f;
arr[len - 4] = a;
arr[len - 3] = b;
arr[len - 2] = c;
arr[len - 1] = d;
let sta = Self::from_array_copy(arr);
Own::empty(sta)
}
/* dup */
/// Duplicates the top stack element.
///
/// `( 1 -- 1 1 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>` if the stack is empty or
/// `Own<self,`[`DataNotEnough::Space`]`>` if the stack is full.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 3> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_push(1).s.own_dup().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[1, 1]];
/// ```
pub const fn own_dup(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len == 0 {
Own::new(self, Err(DataNotEnough::Elements(Some(1))))
} else if self.len as usize == CAP {
Own::new(self, Err(DataNotEnough::Space(Some(1))))
} else {
self.own_dup_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the top stack element, unchecked version.
///
/// `( 1 -- 1 1 )`
/// # Panics
/// Panics if the stack is either empty or full.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 3> = Stack" $IDX:camel
"::own_new(0).s_const_unwrap().s"]
/// .own_push(1).s.own_dup_unchecked().s;
/// assert_eq![S.as_slice(), &[1, 1]];
/// ```
pub const fn own_dup_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
arr[self.len as usize] = arr[self.len as usize - 1];
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 1;
Own::empty(sta)
}
/// Duplicates the top stack pair of elements.
///
/// `( 1 2 -- 1 2 1 2 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>`
/// if the stack doesn't have at least 2 elements,
/// or `Own<self,`[`DataNotEnough::Space`]`>`
/// if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 6> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0, 0, 0])"]
/// .own_drop_n(3).s.own_dup2().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 1, 2]];
/// ```
pub const fn own_dup2(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len < 2 {
Own::new(self, Err(DataNotEnough::Elements(Some(2))))
} else if self.len as usize > CAP - 2 {
Own::new(self, Err(DataNotEnough::Space(Some(2))))
} else {
self.own_dup2_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the top stack pair of elements, unchecked version.
///
/// `( 1 2 -- 1 2 1 2 )`
/// # Panics
/// Panics if the stack doesn't have at least 2 elements,
/// or if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 6> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0, 0, 0])"]
/// .own_drop_n(3).s.own_dup2_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 1, 2]];
/// ```
pub const fn own_dup2_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
let a = arr[self.len as usize - 2];
let b = arr[self.len as usize - 1];
arr[self.len as usize] = a;
arr[self.len as usize + 1] = b;
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 2;
Own::empty(sta)
}
/* over */
/// Duplicates the next of stack element to the top.
///
/// `( 1 2 -- 1 2 1 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>`
/// if the stack doesn't have at least 2 elements,
/// or `Own<self,`[`DataNotEnough::Space`]`>`
/// if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0])"]
/// .own_drop().s.own_over().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 1]];
/// ```
pub const fn own_over(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len < 2 {
Own::new(self, Err(DataNotEnough::Elements(Some(2))))
} else if self.len as usize == CAP {
Own::new(self, Err(DataNotEnough::Space(Some(1))))
} else {
self.own_over_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the next of stack element to the top.
///
/// `( 1 2 -- 1 2 1 )`
/// # Panics
/// Panics if the stack doesn't have at least 2 elements,
/// or if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0])"]
/// .own_drop().s.own_over_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 1]];
/// ```
pub const fn own_over_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
arr[self.len as usize] = arr[self.len as usize - 2];
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 1;
Own::empty(sta)
}
/// Duplicates the next of stack pair of elements to the top.
///
/// `( 1 2 3 4 -- 1 2 3 4 1 2 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>`
/// if the stack doesn't have at least 4 elements,
/// or `Own<self,`[`DataNotEnough::Space`]`>`
/// if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 0, 0])"]
/// .own_drop_n(2).s.own_over2().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 3, 4, 1, 2]];
/// ```
pub const fn own_over2(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len < 4 {
Own::new(self, Err(DataNotEnough::Elements(Some(4))))
} else if CAP - (self.len as usize) < 2 {
Own::new(self, Err(DataNotEnough::Space(Some(2))))
} else {
self.own_over2_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the next of stack pair of elements to the top.
///
/// `( 1 2 3 4 -- 1 2 3 4 1 2 )`
/// # Panics
/// Panics if the stack doesn't have at least 4 elements,
/// or if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 0, 0])"]
/// .own_drop_n(2).s.own_over2_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 1, 2, 3, 4, 1, 2]];
/// ```
pub const fn own_over2_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
let a = arr[self.len as usize - 4];
let b = arr[self.len as usize - 3];
arr[self.len as usize] = a;
arr[self.len as usize + 1] = b;
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 2;
Own::empty(sta)
}
/* tuck */
/// Duplicates the top element before the next of stack element.
///
/// `( 1 2 -- 2 1 2 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>`
/// if the stack doesn't have at least 2 elements,
/// or `Own<self,`[`DataNotEnough::Space`]`>`
/// if it doesn't have enough space for 1 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0])"]
/// .own_drop().s.own_tuck().v_assert_ok().s;
/// assert_eq![S.as_slice(), &[0, 2, 1, 2]];
/// ```
pub const fn own_tuck(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len < 2 {
Own::new(self, Err(DataNotEnough::Elements(Some(2))))
} else if self.len as usize == CAP {
Own::new(self, Err(DataNotEnough::Space(Some(1))))
} else {
self.own_tuck_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the top element before the next of stack element, unchecked version.
///
/// `( 1 2 -- 2 1 2 )`
/// # Panics
/// Panics if the stack doesn't have at least 2 elements,
/// or if it doesn't have enough space for 1 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 4> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 0])"]
/// .own_drop().s.own_tuck_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 2, 1, 2]];
/// ```
pub const fn own_tuck_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
let a = arr[self.len as usize - 1];
cswap![arr[self.len as usize - 2], arr[self.len as usize - 1]];
arr[self.len as usize] = a;
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 1;
Own::empty(sta)
}
/// Duplicates the top pair of elements before the next of stack pair of elements.
///
/// `( 1 2 3 4 -- 3 4 1 2 3 4 )`
/// # Errors
/// Returns `Own<self,`[`DataNotEnough::Elements`]`>`
/// if the stack doesn't have at least 4 elements,
/// or `Own<self,`[`DataNotEnough::Space`]`>`
/// if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 0, 0])"]
/// .own_drop_n(2).s.own_tuck2_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 3, 4, 1, 2, 3, 4]];
/// ```
pub const fn own_tuck2(self) -> Own<Self, Result<(), DataNotEnough>> {
if self.len < 4 {
Own::new(self, Err(DataNotEnough::Elements(Some(4))))
} else if CAP - (self.len as usize) < 2 {
Own::new(self, Err(DataNotEnough::Space(Some(2))))
} else {
self.own_tuck2_unchecked().v_const_wrap_ok()
}
}
/// Duplicates the top pair of elements before the next of stack pair of elements,
/// unchecked version.
///
/// `( 1 2 3 4 -- 3 4 1 2 3 4 )`
/// # Panics
/// Panics if the stack doesn't have at least 4 elements,
/// or if it doesn't have enough space for 2 extra elements.
/// # Examples
/// ```
#[doc = "# use devela::{Own, Stack" $IDX:camel "};"]
#[doc = "const S: Stack" $IDX:camel "<i32, 7> = Stack" $IDX:camel
"::from_array_copy([0, 1, 2, 3, 4, 0, 0])"]
/// .own_drop_n(2).s.own_tuck2_unchecked().s;
/// assert_eq![S.as_slice(), &[0, 3, 4, 1, 2, 3, 4]];
/// ```
pub const fn own_tuck2_unchecked(self) -> Own<Self, ()> {
let mut arr = self.data.into_array_copy();
// swap2
cswap![arr[self.len as usize - 4], arr[self.len as usize - 2]];
cswap![arr[self.len as usize - 3], arr[self.len as usize - 1]];
// over2
let a = arr[self.len as usize - 4];
let b = arr[self.len as usize - 3];
arr[self.len as usize] = a;
arr[self.len as usize + 1] = b;
let mut sta = Self::from_array_copy(arr);
sta.len = self.len + 2;
Own::empty(sta)
}
}
}};
}
impl_stack!();