Vendor things
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369
third-party/vendor/log/src/macros.rs
vendored
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369
third-party/vendor/log/src/macros.rs
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// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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/// The standard logging macro.
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///
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/// This macro will generically log with the specified `Level` and `format!`
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/// based argument list.
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///
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/// # Examples
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///
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/// ```
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/// use log::{log, Level};
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///
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/// # fn main() {
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/// let data = (42, "Forty-two");
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/// let private_data = "private";
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///
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/// log!(Level::Error, "Received errors: {}, {}", data.0, data.1);
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/// log!(target: "app_events", Level::Warn, "App warning: {}, {}, {}",
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/// data.0, data.1, private_data);
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/// # }
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/// ```
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#[macro_export]
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macro_rules! log {
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// log!(target: "my_target", Level::Info, key1:? = 42, key2 = true; "a {} event", "log");
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(target: $target:expr, $lvl:expr, $($key:tt $(:$capture:tt)? $(= $value:expr)?),+; $($arg:tt)+) => ({
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let lvl = $lvl;
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if lvl <= $crate::STATIC_MAX_LEVEL && lvl <= $crate::max_level() {
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$crate::__private_api::log::<&_>(
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$crate::__private_api::format_args!($($arg)+),
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lvl,
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&($target, $crate::__private_api::module_path!(), $crate::__private_api::file!()),
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$crate::__private_api::line!(),
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&[$(($crate::__log_key!($key), $crate::__log_value!($key $(:$capture)* = $($value)*))),+]
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);
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}
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});
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// log!(target: "my_target", Level::Info, "a {} event", "log");
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(target: $target:expr, $lvl:expr, $($arg:tt)+) => ({
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let lvl = $lvl;
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if lvl <= $crate::STATIC_MAX_LEVEL && lvl <= $crate::max_level() {
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$crate::__private_api::log(
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$crate::__private_api::format_args!($($arg)+),
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lvl,
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&($target, $crate::__private_api::module_path!(), $crate::__private_api::file!()),
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$crate::__private_api::line!(),
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(),
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);
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}
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});
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// log!(Level::Info, "a log event")
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($lvl:expr, $($arg:tt)+) => ($crate::log!(target: $crate::__private_api::module_path!(), $lvl, $($arg)+));
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}
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/// Logs a message at the error level.
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///
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/// # Examples
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///
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/// ```
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/// use log::error;
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///
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/// # fn main() {
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/// let (err_info, port) = ("No connection", 22);
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///
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/// error!("Error: {err_info} on port {port}");
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/// error!(target: "app_events", "App Error: {err_info}, Port: {port}");
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/// # }
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/// ```
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#[macro_export]
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macro_rules! error {
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// error!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
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// error!(target: "my_target", "a {} event", "log")
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(target: $target:expr, $($arg:tt)+) => ($crate::log!(target: $target, $crate::Level::Error, $($arg)+));
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// error!("a {} event", "log")
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($($arg:tt)+) => ($crate::log!($crate::Level::Error, $($arg)+))
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}
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/// Logs a message at the warn level.
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///
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/// # Examples
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///
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/// ```
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/// use log::warn;
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///
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/// # fn main() {
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/// let warn_description = "Invalid Input";
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///
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/// warn!("Warning! {warn_description}!");
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/// warn!(target: "input_events", "App received warning: {warn_description}");
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/// # }
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/// ```
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#[macro_export]
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macro_rules! warn {
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// warn!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
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// warn!(target: "my_target", "a {} event", "log")
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(target: $target:expr, $($arg:tt)+) => ($crate::log!(target: $target, $crate::Level::Warn, $($arg)+));
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// warn!("a {} event", "log")
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($($arg:tt)+) => ($crate::log!($crate::Level::Warn, $($arg)+))
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}
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/// Logs a message at the info level.
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///
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/// # Examples
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///
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/// ```
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/// use log::info;
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///
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/// # fn main() {
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/// # struct Connection { port: u32, speed: f32 }
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/// let conn_info = Connection { port: 40, speed: 3.20 };
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///
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/// info!("Connected to port {} at {} Mb/s", conn_info.port, conn_info.speed);
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/// info!(target: "connection_events", "Successful connection, port: {}, speed: {}",
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/// conn_info.port, conn_info.speed);
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/// # }
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/// ```
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#[macro_export]
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macro_rules! info {
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// info!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
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// info!(target: "my_target", "a {} event", "log")
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(target: $target:expr, $($arg:tt)+) => ($crate::log!(target: $target, $crate::Level::Info, $($arg)+));
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// info!("a {} event", "log")
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($($arg:tt)+) => ($crate::log!($crate::Level::Info, $($arg)+))
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}
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/// Logs a message at the debug level.
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///
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/// # Examples
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///
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/// ```
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/// use log::debug;
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///
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/// # fn main() {
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/// # struct Position { x: f32, y: f32 }
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/// let pos = Position { x: 3.234, y: -1.223 };
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///
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/// debug!("New position: x: {}, y: {}", pos.x, pos.y);
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/// debug!(target: "app_events", "New position: x: {}, y: {}", pos.x, pos.y);
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/// # }
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/// ```
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#[macro_export]
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macro_rules! debug {
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// debug!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
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// debug!(target: "my_target", "a {} event", "log")
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(target: $target:expr, $($arg:tt)+) => ($crate::log!(target: $target, $crate::Level::Debug, $($arg)+));
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// debug!("a {} event", "log")
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($($arg:tt)+) => ($crate::log!($crate::Level::Debug, $($arg)+))
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}
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/// Logs a message at the trace level.
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///
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/// # Examples
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///
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/// ```
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/// use log::trace;
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///
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/// # fn main() {
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/// # struct Position { x: f32, y: f32 }
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/// let pos = Position { x: 3.234, y: -1.223 };
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///
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/// trace!("Position is: x: {}, y: {}", pos.x, pos.y);
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/// trace!(target: "app_events", "x is {} and y is {}",
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/// if pos.x >= 0.0 { "positive" } else { "negative" },
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/// if pos.y >= 0.0 { "positive" } else { "negative" });
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/// # }
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/// ```
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#[macro_export]
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macro_rules! trace {
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// trace!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
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// trace!(target: "my_target", "a {} event", "log")
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(target: $target:expr, $($arg:tt)+) => ($crate::log!(target: $target, $crate::Level::Trace, $($arg)+));
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// trace!("a {} event", "log")
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($($arg:tt)+) => ($crate::log!($crate::Level::Trace, $($arg)+))
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}
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/// Determines if a message logged at the specified level in that module will
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/// be logged.
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///
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/// This can be used to avoid expensive computation of log message arguments if
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/// the message would be ignored anyway.
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///
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/// # Examples
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///
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/// ```
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/// use log::Level::Debug;
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/// use log::{debug, log_enabled};
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///
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/// # fn foo() {
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/// if log_enabled!(Debug) {
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/// let data = expensive_call();
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/// debug!("expensive debug data: {} {}", data.x, data.y);
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/// }
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/// if log_enabled!(target: "Global", Debug) {
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/// let data = expensive_call();
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/// debug!(target: "Global", "expensive debug data: {} {}", data.x, data.y);
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/// }
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/// # }
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/// # struct Data { x: u32, y: u32 }
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/// # fn expensive_call() -> Data { Data { x: 0, y: 0 } }
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/// # fn main() {}
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/// ```
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#[macro_export]
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macro_rules! log_enabled {
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(target: $target:expr, $lvl:expr) => {{
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let lvl = $lvl;
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lvl <= $crate::STATIC_MAX_LEVEL
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&& lvl <= $crate::max_level()
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&& $crate::__private_api::enabled(lvl, $target)
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}};
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($lvl:expr) => {
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$crate::log_enabled!(target: $crate::__private_api::module_path!(), $lvl)
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};
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}
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// These macros use a pattern of #[cfg]s to produce nicer error
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// messages when log features aren't available
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#[doc(hidden)]
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#[macro_export]
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#[cfg(feature = "kv")]
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macro_rules! __log_key {
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// key1 = 42
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($($args:ident)*) => {
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$crate::__private_api::stringify!($($args)*)
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};
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// "key1" = 42
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($($args:expr)*) => {
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$($args)*
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(not(feature = "kv"))]
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macro_rules! __log_key {
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($($args:tt)*) => {
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compile_error!("key value support requires the `kv` feature of `log`")
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(feature = "kv")]
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macro_rules! __log_value {
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// Entrypoint
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($key:tt = $args:expr) => {
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$crate::__log_value!(($args):value)
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};
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($key:tt :$capture:tt = $args:expr) => {
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$crate::__log_value!(($args):$capture)
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};
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($key:ident =) => {
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$crate::__log_value!(($key):value)
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};
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($key:ident :$capture:tt =) => {
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$crate::__log_value!(($key):$capture)
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};
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// ToValue
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(($args:expr):value) => {
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$crate::__private_api::capture_to_value(&&$args)
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};
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// Debug
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(($args:expr):?) => {
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$crate::__private_api::capture_debug(&&$args)
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};
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(($args:expr):debug) => {
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$crate::__private_api::capture_debug(&&$args)
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};
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// Display
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(($args:expr):%) => {
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$crate::__private_api::capture_display(&&$args)
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};
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(($args:expr):display) => {
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$crate::__private_api::capture_display(&&$args)
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};
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//Error
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(($args:expr):err) => {
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$crate::__log_value_error!($args)
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};
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// sval::Value
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(($args:expr):sval) => {
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$crate::__log_value_sval!($args)
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};
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// serde::Serialize
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(($args:expr):serde) => {
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$crate::__log_value_serde!($args)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(not(feature = "kv"))]
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macro_rules! __log_value {
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($($args:tt)*) => {
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compile_error!("key value support requires the `kv` feature of `log`")
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(feature = "kv_sval")]
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macro_rules! __log_value_sval {
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($args:expr) => {
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$crate::__private_api::capture_sval(&&$args)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(not(feature = "kv_sval"))]
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macro_rules! __log_value_sval {
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($args:expr) => {
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compile_error!("capturing values as `sval::Value` requites the `kv_sval` feature of `log`")
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(feature = "kv_serde")]
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macro_rules! __log_value_serde {
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($args:expr) => {
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$crate::__private_api::capture_serde(&&$args)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(not(feature = "kv_serde"))]
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macro_rules! __log_value_serde {
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($args:expr) => {
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compile_error!(
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"capturing values as `serde::Serialize` requites the `kv_serde` feature of `log`"
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)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(feature = "kv_std")]
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macro_rules! __log_value_error {
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($args:expr) => {
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$crate::__private_api::capture_error(&$args)
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};
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}
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#[doc(hidden)]
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#[macro_export]
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#[cfg(not(feature = "kv_std"))]
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macro_rules! __log_value_error {
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($args:expr) => {
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compile_error!(
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"capturing values as `std::error::Error` requites the `kv_std` feature of `log`"
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)
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};
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}
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