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Make debug!, etc. macros not require a format string

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The one thing `log` can still do is polymorphically log anything,
but debug!, etc. require a format string. With this patch
you can equivalently write `debug!(foo)` or `debug!("%?", foo)`
This commit is contained in:
Brian Anderson 2013-03-07 18:45:22 -08:00
parent 7140d7c52b
commit dd4d45062d
2 changed files with 42 additions and 8 deletions
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40
src/libsyntax/ext/expand.rs
View File

@ -409,14 +409,38 @@ pub fn core_macros() -> ~str {
~"pub mod macros {
macro_rules! ignore (($($x:tt)*) => (()))
macro_rules! error ( ($( $arg:expr ),+) => (
log(::core::error, fmt!( $($arg),+ )) ))
macro_rules! warn ( ($( $arg:expr ),+) => (
log(::core::warn, fmt!( $($arg),+ )) ))
macro_rules! info ( ($( $arg:expr ),+) => (
log(::core::info, fmt!( $($arg),+ )) ))
macro_rules! debug ( ($( $arg:expr ),+) => (
log(::core::debug, fmt!( $($arg),+ )) ))
macro_rules! error (
($arg:expr) => (
log(::core::error, fmt!( \"%?\", $arg ))
);
($( $arg:expr ),+) => (
log(::core::error, fmt!( $($arg),+ ))
)
)
macro_rules! warn (
($arg:expr) => (
log(::core::warn, fmt!( \"%?\", $arg ))
);
($( $arg:expr ),+) => (
log(::core::warn, fmt!( $($arg),+ ))
)
)
macro_rules! info (
($arg:expr) => (
log(::core::info, fmt!( \"%?\", $arg ))
);
($( $arg:expr ),+) => (
log(::core::info, fmt!( $($arg),+ ))
)
)
macro_rules! debug (
($arg:expr) => (
log(::core::debug, fmt!( \"%?\", $arg ))
);
($( $arg:expr ),+) => (
log(::core::debug, fmt!( $($arg),+ ))
)
)
macro_rules! fail(
($msg: expr) => (

10
src/test/run-pass/log-poly.rs Normal file
View File

@ -0,0 +1,10 @@
enum Numbers {
Three
}
fn main() {
debug!(1);
info!(2.0);
warn!(Three);
error!(~[4]);
}