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// 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. macro_rules! cfg_if { ($( if #[cfg($($meta:meta),*)] { $($it:item)* } ) else * else { $($it2:item)* }) => { __cfg_if_items! { () ; $( ( ($($meta),*) ($($it)*) ), )* ( () ($($it2)*) ), } } } macro_rules! __cfg_if_items { (($($not:meta,)*) ; ) => {}; (($($not:meta,)*) ; ( ($($m:meta),*) ($($it:item)*) ), $($rest:tt)*) => { __cfg_if_apply! { cfg(all(not(any($($not),*)), $($m,)*)), $($it)* } __cfg_if_items! { ($($not,)* $($m,)*) ; $($rest)* } } } macro_rules! __cfg_if_apply { ($m:meta, $($it:item)*) => { $(#[$m] $it)* } } macro_rules! __item { ($i:item) => ($i) } macro_rules! s { ($($(#[$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) -> $i { *self } } )*) } macro_rules! f { ($(pub fn $i:ident($($arg:ident: $argty:ty),*) -> $ret:ty { $($body:stmt);* })*) => ($( #[inline] #[cfg(not(cross_platform_docs))] pub unsafe extern fn $i($($arg: $argty),*) -> $ret { $($body);* } #[cfg(cross_platform_docs)] #[allow(dead_code)] pub unsafe extern fn $i($($arg: $argty),*) -> $ret { loop {} } )*) }