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Convert vec::{push, push_all, push_all_move} to methods.

This commit is contained in:
Huon Wilson 2013-06-27 23:53:37 +10:00
parent 1cb0a567d1
commit 29b0649a6a
6 changed files with 81 additions and 93 deletions
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2
doc/rust.md
View File

@ -2620,7 +2620,7 @@ assert!(b != "world");
The vector type constructor represents a homogeneous array of values of a given type.
A vector has a fixed size.
(Operations like `vec::push` operate solely on owned vectors.)
(Operations like `vec.push` operate solely on owned vectors.)
A vector type can be annotated with a _definite_ size,
written with a trailing asterisk and integer literal, such as `[int * 10]`.
Such a definite-sized vector type is a first-class type, since its size is known statically.

3
src/librustc/metadata/decoder.rs
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@ -763,8 +763,7 @@ pub fn get_provided_trait_methods(intr: @ident_interner, cdata: cmd,
if item_method_sort(mth) != 'p' { loop; }
vec::push(&mut result,
@get_method(intr, cdata, did.node, tcx));
result.push(@get_method(intr, cdata, did.node, tcx));
}
return result;

4
src/librustc/middle/resolve.rs
View File

@ -4862,8 +4862,8 @@ impl Resolver {
while j != 0 {
j -= 1;
for this.value_ribs[j].bindings.each_key |&k| {
vec::push(&mut maybes, this.session.str_of(k));
vec::push(&mut values, uint::max_value);
maybes.push(this.session.str_of(k));
values.push(uint::max_value);
}
}

2
src/librustc/middle/typeck/coherence.rs
View File

@ -788,7 +788,7 @@ impl CoherenceChecker {
`%s` to impl",
provided_method.method_info
.ident.repr(self.crate_context.tcx));
vec::push(all_methods, provided_method.method_info);
all_methods.push(provided_method.method_info);
}
}
}

5
src/libstd/os.rs
View File

@ -1140,7 +1140,7 @@ pub fn set_exit_status(code: int) {
unsafe fn load_argc_and_argv(argc: c_int, argv: **c_char) -> ~[~str] {
let mut args = ~[];
for uint::range(0, argc as uint) |i| {
vec::push(&mut args, str::raw::from_c_str(*argv.offset(i)));
args.push(str::raw::from_c_str(*argv.offset(i)));
}
args
}
@ -1186,8 +1186,7 @@ pub fn real_args() -> ~[~str] {
while *ptr.offset(len) != 0 { len += 1; }
// Push it onto the list.
vec::push(&mut args,
vec::raw::buf_as_slice(ptr, len,
args.push(vec::raw::buf_as_slice(ptr, len,
str::from_utf16));
}
}

158
src/libstd/vec.rs
View File

@ -438,86 +438,6 @@ pub fn consume_reverse<T>(mut v: ~[T], f: &fn(uint, v: T)) {
}
}
/// Append an element to a vector
#[inline]
pub fn push<T>(v: &mut ~[T], initval: T) {
unsafe {
let repr: **raw::VecRepr = transmute(&mut *v);
let fill = (**repr).unboxed.fill;
if (**repr).unboxed.alloc > fill {
push_fast(v, initval);
}
else {
push_slow(v, initval);
}
}
}
// This doesn't bother to make sure we have space.
#[inline] // really pretty please
unsafe fn push_fast<T>(v: &mut ~[T], initval: T) {
let repr: **mut raw::VecRepr = transmute(v);
let fill = (**repr).unboxed.fill;
(**repr).unboxed.fill += sys::nonzero_size_of::<T>();
let p = to_unsafe_ptr(&((**repr).unboxed.data));
let p = ptr::offset(p, fill) as *mut T;
intrinsics::move_val_init(&mut(*p), initval);
}
#[inline(never)]
fn push_slow<T>(v: &mut ~[T], initval: T) {
let new_len = v.len() + 1;
reserve_at_least(&mut *v, new_len);
unsafe { push_fast(v, initval) }
}
/// Iterates over the slice `rhs`, copies each element, and then appends it to
/// the vector provided `v`. The `rhs` vector is traversed in-order.
///
/// # Example
///
/// ~~~ {.rust}
/// let mut a = ~[1];
/// vec::push_all(&mut a, [2, 3, 4]);
/// assert!(a == ~[1, 2, 3, 4]);
/// ~~~
#[inline]
pub fn push_all<T:Copy>(v: &mut ~[T], rhs: &const [T]) {
let new_len = v.len() + rhs.len();
reserve(&mut *v, new_len);
for uint::range(0u, rhs.len()) |i| {
push(&mut *v, unsafe { raw::get(rhs, i) })
}
}
/// Takes ownership of the vector `rhs`, moving all elements into the specified
/// vector `v`. This does not copy any elements, and it is illegal to use the
/// `rhs` vector after calling this method (because it is moved here).
///
/// # Example
///
/// ~~~ {.rust}
/// let mut a = ~[~1];
/// vec::push_all_move(&mut a, ~[~2, ~3, ~4]);
/// assert!(a == ~[~1, ~2, ~3, ~4]);
/// ~~~
#[inline]
pub fn push_all_move<T>(v: &mut ~[T], mut rhs: ~[T]) {
let new_len = v.len() + rhs.len();
reserve(&mut *v, new_len);
unsafe {
do as_mut_buf(rhs) |p, len| {
for uint::range(0, len) |i| {
let x = ptr::replace_ptr(ptr::mut_offset(p, i),
intrinsics::uninit());
push(&mut *v, x);
}
}
raw::set_len(&mut rhs, 0);
}
}
/// Shorten a vector, dropping excess elements.
pub fn truncate<T>(v: &mut ~[T], newlen: uint) {
do as_mut_buf(*v) |p, oldlen| {
@ -1699,6 +1619,8 @@ impl<'self,T:Copy> ImmutableCopyableVector<T> for &'self [T] {
#[allow(missing_doc)]
pub trait OwnedVector<T> {
fn push(&mut self, t: T);
unsafe fn push_fast(&mut self, t: T);
fn push_all_move(&mut self, rhs: ~[T]);
fn pop(&mut self) -> T;
fn shift(&mut self) -> T;
@ -1716,14 +1638,67 @@ pub trait OwnedVector<T> {
}
impl<T> OwnedVector<T> for ~[T] {
/// Append an element to a vector
#[inline]
fn push(&mut self, t: T) {
push(self, t);
unsafe {
let repr: **raw::VecRepr = transmute(&mut *self);
let fill = (**repr).unboxed.fill;
if (**repr).unboxed.alloc <= fill {
// need more space
reserve_no_inline(self);
}
self.push_fast(t);
}
// this peculiar function is because reserve_at_least is very
// large (because of reserve), and will be inlined, which
// makes push too large.
#[inline(never)]
fn reserve_no_inline<T>(v: &mut ~[T]) {
let new_len = v.len() + 1;
reserve_at_least(v, new_len);
}
}
// This doesn't bother to make sure we have space.
#[inline] // really pretty please
unsafe fn push_fast(&mut self, t: T) {
let repr: **mut raw::VecRepr = transmute(self);
let fill = (**repr).unboxed.fill;
(**repr).unboxed.fill += sys::nonzero_size_of::<T>();
let p = to_unsafe_ptr(&((**repr).unboxed.data));
let p = ptr::offset(p, fill) as *mut T;
intrinsics::move_val_init(&mut(*p), t);
}
/// Takes ownership of the vector `rhs`, moving all elements into
/// the current vector. This does not copy any elements, and it is
/// illegal to use the `rhs` vector after calling this method
/// (because it is moved here).
///
/// # Example
///
/// ~~~ {.rust}
/// let mut a = ~[~1];
/// a.push_all_move(~[~2, ~3, ~4]);
/// assert!(a == ~[~1, ~2, ~3, ~4]);
/// ~~~
#[inline]
fn push_all_move(&mut self, rhs: ~[T]) {
push_all_move(self, rhs);
fn push_all_move(&mut self, mut rhs: ~[T]) {
let new_len = self.len() + rhs.len();
reserve(self, new_len);
unsafe {
do as_mut_buf(rhs) |p, len| {
for uint::range(0, len) |i| {
let x = ptr::replace_ptr(ptr::mut_offset(p, i),
intrinsics::uninit());
self.push(x);
}
}
raw::set_len(&mut rhs, 0);
}
}
/// Remove the last element from a vector and return it
@ -1898,9 +1873,24 @@ pub trait OwnedCopyableVector<T:Copy> {
}
impl<T:Copy> OwnedCopyableVector<T> for ~[T] {
/// Iterates over the slice `rhs`, copies each element, and then appends it to
/// the vector provided `v`. The `rhs` vector is traversed in-order.
///
/// # Example
///
/// ~~~ {.rust}
/// let mut a = ~[1];
/// a.push_all([2, 3, 4]);
/// assert!(a == ~[1, 2, 3, 4]);
/// ~~~
#[inline]
fn push_all(&mut self, rhs: &const [T]) {
push_all(self, rhs);
let new_len = self.len() + rhs.len();
reserve(self, new_len);
for uint::range(0u, rhs.len()) |i| {
self.push(unsafe { raw::get(rhs, i) })
}
}
#[inline]