| // Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in |
| // the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Baidu, Inc., nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| pub use core::clone::Clone; |
| pub use core::marker::Copy; |
| pub use core::default::Default; |
| pub use core::ptr; |
| pub use core::mem::transmute; |
| pub use marker::ContiguousMemory; |
| |
| #[macro_export] |
| macro_rules! cfg_if { |
| ($( |
| if #[cfg($($meta:meta),*)] { $($it:item)* } |
| ) else * else { |
| $($it2:item)* |
| }) => { |
| __cfg_if_items! { |
| () ; |
| $( ( ($($meta),*) ($($it)*) ), )* |
| ( () ($($it2)*) ), |
| } |
| } |
| } |
| |
| #[macro_export] |
| macro_rules! __cfg_if_items { |
| (($($not:meta,)*) ; ) => {}; |
| (($($not:meta,)*) ; ( ($($m:meta),*) ($($it:item)*) ), $($rest:tt)*) => { |
| __cfg_if_apply! { cfg(all(not(any($($not),*)), $($m,)*)), $($it)* } |
| __cfg_if_items! { ($($not,)* $($m,)*) ; $($rest)* } |
| } |
| } |
| |
| #[macro_export] |
| macro_rules! __cfg_if_apply { |
| ($m:meta, $($it:item)*) => { |
| $(#[$m] $it)* |
| } |
| } |
| |
| #[macro_export] |
| macro_rules! __item { |
| ($i:item) => ($i) |
| } |
| |
| macro_rules! impl_copy_clone{ |
| ($($(#[$attr:meta])* pub struct $i:ident { $($field:tt)* })*) => ($( |
| __item! { |
| #[repr(C)] |
| $(#[$attr])* |
| pub struct $i { $($field)* } |
| } |
| impl Copy for $i {} |
| impl Clone for $i { |
| fn clone(&self) -> $i { *self } |
| } |
| )*) |
| } |
| |
| #[macro_export] |
| macro_rules! s { |
| ($($(#[$attr:meta])* pub struct $i:ident { $($field:tt)* })*) => ($( |
| __item! { |
| #[repr(C)] |
| $(#[$attr])* |
| pub struct $i { $($field)* } |
| } |
| impl Copy for $i {} |
| impl Clone for $i { |
| fn clone(&self) -> $i { *self } |
| } |
| )*) |
| } |
| |
| #[macro_export] |
| macro_rules! impl_struct { |
| ($($(#[$attr:meta])* pub struct $i:ident { $(pub $name:ident: $field:ty,)* })*) => ($( |
| __item! { |
| #[repr(C)] |
| $(#[$attr])* |
| pub struct $i { $(pub $name: $field,)* } |
| } |
| impl Copy for $i {} |
| impl Clone for $i { |
| fn clone(&self) -> $i { *self } |
| } |
| impl Default for $i { |
| fn default()->$i { |
| $i{$($name: Default::default(),)*} |
| } |
| } |
| unsafe impl $crate::marker::ContiguousMemory for $i {} |
| )*) |
| } |
| |
| macro_rules! impl_struct_default { |
| ($($t:ty, $size:expr;)*) => {$( |
| impl Default for $t { |
| fn default() -> $t { |
| unsafe{::macros::transmute([0u8; $size])} |
| } |
| } |
| )*} |
| } |
| |
| macro_rules! impl_struct_clone { |
| ($($t:ty;)*) => {$( |
| impl Clone for $t { |
| fn clone(&self) -> $t { |
| unsafe{::macros::ptr::read(self)} |
| } |
| } |
| )*} |
| } |
| |
| macro_rules! impl_struct_ContiguousMemory { |
| |
| ($($t:ty;)*) => {$( |
| unsafe impl ContiguousMemory for $t {} |
| )*} |
| } |
| |
| #[macro_export] |
| macro_rules! impl_enum { |
| ( |
| #[repr($repr:ident)] |
| #[derive($($derive:meta),*)] |
| pub enum $name:ident { |
| $key:ident = $val:expr, |
| $($keys:ident = $vals:expr,)* |
| } |
| ) => ( |
| #[repr($repr)] |
| #[derive($($derive),*)] |
| pub enum $name { |
| $key = $val, |
| $($keys = $vals,)* |
| } |
| |
| impl Default for $name { |
| fn default() -> $name { |
| $name::$key |
| } |
| } |
| |
| impl $name { |
| pub fn from_repr(v: $repr) -> Option<Self> { |
| match v { |
| $val => Some($name::$key), |
| $($vals => Some($name::$keys),)* |
| _ => None, |
| } |
| } |
| |
| pub fn from_key(self) -> $repr { |
| match self { |
| $name::$key => $val, |
| $($name::$keys => $vals,)* |
| } |
| } |
| } |
| ) |
| } |
| |
| #[macro_export] |
| macro_rules! meta_data_make_version { |
| ($major:ident, $minor:ident) => ( ($major as u64) << 32 | $minor as u64 ) |
| } |
| |
| #[macro_export] |
| macro_rules! major_version_of_metadata { |
| ($version:ident) => ( ($version as u64) >> 32 ) |
| } |
| |
| #[macro_export] |
| macro_rules! minor_version_of_metadata { |
| ($version:ident) => ( ($version as u64) & 0x0000_0000_FFFF_FFFF ) |
| } |
| |
| #[macro_export] |
| macro_rules! group_id { |
| ($gid:expr) => ( (GROUP_FLAG | $gid) ) |
| } |
| |
| #[macro_export] |
| macro_rules! is_group_id { |
| ($gid:expr) => ( (!!($gid & GROUP_FLAG)) ) |
| } |