127 lines
3.6 KiB
Rust
127 lines
3.6 KiB
Rust
// Copyright 2014 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.
|
|
|
|
#![macro_escape]
|
|
|
|
/// Entry point of failure, for details, see std::macros
|
|
#[macro_export]
|
|
macro_rules! fail(
|
|
() => (
|
|
fail!("{}", "explicit failure")
|
|
);
|
|
($msg:expr) => (
|
|
fail!("{}", $msg)
|
|
);
|
|
($fmt:expr, $($arg:tt)*) => ({
|
|
// a closure can't have return type !, so we need a full
|
|
// function to pass to format_args!, *and* we need the
|
|
// file and line numbers right here; so an inner bare fn
|
|
// is our only choice.
|
|
//
|
|
// LLVM doesn't tend to inline this, presumably because begin_unwind_fmt
|
|
// is #[cold] and #[inline(never)] and because this is flagged as cold
|
|
// as returning !. We really do want this to be inlined, however,
|
|
// because it's just a tiny wrapper. Small wins (156K to 149K in size)
|
|
// were seen when forcing this to be inlined, and that number just goes
|
|
// up with the number of calls to fail!()
|
|
#[inline(always)]
|
|
fn run_fmt(fmt: &::std::fmt::Arguments) -> ! {
|
|
::core::failure::begin_unwind(fmt, &(file!(), line!()))
|
|
}
|
|
format_args!(run_fmt, $fmt, $($arg)*)
|
|
});
|
|
)
|
|
|
|
/// Runtime assertion, for details see std::macros
|
|
#[macro_export]
|
|
macro_rules! assert(
|
|
($cond:expr) => (
|
|
if !$cond {
|
|
fail!(concat!("assertion failed: ", stringify!($cond)))
|
|
}
|
|
);
|
|
($cond:expr, $($arg:tt)*) => (
|
|
if !$cond {
|
|
fail!($($arg)*)
|
|
}
|
|
);
|
|
)
|
|
|
|
/// Runtime assertion, only without `--cfg ndebug`
|
|
#[macro_export]
|
|
macro_rules! debug_assert(
|
|
($(a:tt)*) => ({
|
|
if cfg!(not(ndebug)) {
|
|
assert!($($a)*);
|
|
}
|
|
})
|
|
)
|
|
|
|
/// Runtime assertion for equality, for details see std::macros
|
|
#[macro_export]
|
|
macro_rules! assert_eq(
|
|
($cond1:expr, $cond2:expr) => ({
|
|
let c1 = $cond1;
|
|
let c2 = $cond2;
|
|
if c1 != c2 || c2 != c1 {
|
|
fail!("expressions not equal, left: {}, right: {}", c1, c2);
|
|
}
|
|
})
|
|
)
|
|
|
|
/// Runtime assertion for equality, only without `--cfg ndebug`
|
|
#[macro_export]
|
|
macro_rules! debug_assert_eq(
|
|
($($a:tt)*) => ({
|
|
if cfg!(not(ndebug)) {
|
|
assert_eq!($($a)*);
|
|
}
|
|
})
|
|
)
|
|
|
|
/// Runtime assertion, disableable at compile time
|
|
#[macro_export]
|
|
macro_rules! debug_assert(
|
|
($($arg:tt)*) => (if cfg!(not(ndebug)) { assert!($($arg)*); })
|
|
)
|
|
|
|
/// Short circuiting evaluation on Err
|
|
#[macro_export]
|
|
macro_rules! try(
|
|
($e:expr) => (match $e { Ok(e) => e, Err(e) => return Err(e) })
|
|
)
|
|
|
|
/// Writing a formatted string into a writer
|
|
#[macro_export]
|
|
macro_rules! write(
|
|
($dst:expr, $($arg:tt)*) => (format_args_method!($dst, write_fmt, $($arg)*))
|
|
)
|
|
|
|
/// Writing a formatted string plus a newline into a writer
|
|
#[macro_export]
|
|
macro_rules! writeln(
|
|
($dst:expr, $fmt:expr $($arg:tt)*) => (
|
|
write!($dst, concat!($fmt, "\n") $($arg)*)
|
|
)
|
|
)
|
|
|
|
/// Write some formatted data into a stream.
|
|
///
|
|
/// Identical to the macro in `std::macros`
|
|
#[macro_export]
|
|
macro_rules! write(
|
|
($dst:expr, $($arg:tt)*) => ({
|
|
format_args_method!($dst, write_fmt, $($arg)*)
|
|
})
|
|
)
|
|
|
|
#[macro_export]
|
|
macro_rules! unreachable( () => (fail!("unreachable code")) )
|