You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
2.5 KiB
133 lines
2.5 KiB
//! Source traces
|
|
use super::*;
|
|
|
|
/// Contains backtrace info from where the log macro was invoked
|
|
#[derive(Debug)]
|
|
pub struct Trace
|
|
{
|
|
line: Option<usize>,
|
|
file: Option<&'static str>,
|
|
column: Option<usize>,
|
|
|
|
display: Opaque<RwLock<Option<String>>>,
|
|
}
|
|
|
|
impl Clone for Trace
|
|
{
|
|
#[inline]
|
|
fn clone(&self) -> Self
|
|
{
|
|
Self {
|
|
line: self.line.clone(),
|
|
file: self.file.clone(),
|
|
column: self.column.clone(),
|
|
|
|
display: Opaque::new(RwLock::new(None)),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl std::hash::Hash for Trace
|
|
{
|
|
fn hash<H: std::hash::Hasher>(&self, state: &mut H)
|
|
{
|
|
self.line.hash(state);
|
|
self.file.hash(state);
|
|
self.column.hash(state);
|
|
}
|
|
}
|
|
|
|
impl std::cmp::PartialEq for Trace
|
|
{
|
|
fn eq(&self, other: &Self)->bool
|
|
{
|
|
self.line == other.line &&
|
|
self.file == other.file &&
|
|
self.column == other.column
|
|
}
|
|
}
|
|
|
|
impl Trace
|
|
{
|
|
/// Create a new `Trace` manually. Generally not desireable, use `get_trace!()` instead.
|
|
pub fn new(file: Option<&'static str>, line: Option<u32>, column: Option<u32>) -> Self
|
|
{
|
|
use std::convert::TryInto;
|
|
let this = Self{
|
|
file,
|
|
line: line.and_then(|x| x.try_into().ok()),
|
|
column: column.and_then(|x| x.try_into().ok()),
|
|
display: Opaque::new(RwLock::new(None)),
|
|
};
|
|
this
|
|
}
|
|
|
|
fn genstring(&self) -> Result<String, fmt::Error>
|
|
{
|
|
let mut out = String::new();
|
|
use std::fmt::Write as FmtWrite;
|
|
|
|
write!(out, "{}", self.file.unwrap_or("(unbound)"))?;
|
|
if let Some(line) = self.line {
|
|
write!(&mut out, ":{}", line)?;
|
|
} else {
|
|
write!(&mut out, ":?")?;
|
|
}
|
|
if let Some(column) = self.column {
|
|
write!(&mut out, ":{}", column)?;
|
|
} else {
|
|
write!(&mut out, ":?")?;
|
|
}
|
|
|
|
Ok(out)
|
|
}
|
|
}
|
|
|
|
impl std::fmt::Display for Trace
|
|
{
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
|
{
|
|
{
|
|
let read = self.display.read().expect("Poisoned");
|
|
if let Some(opt) = read.as_ref()
|
|
{
|
|
write!(f, "{}", opt)?;
|
|
return Ok(());
|
|
}
|
|
}
|
|
|
|
let out = self.genstring()?;
|
|
|
|
write!(f, "{}", out)?;
|
|
|
|
let mut write = self.display.write().expect("Poisoned");
|
|
*write = Some(out);
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
|
|
impl Default for Trace
|
|
{
|
|
#[inline]
|
|
fn default() -> Self
|
|
{
|
|
Self{
|
|
line:None,
|
|
file:None,
|
|
column:None,
|
|
|
|
display: Opaque::new(RwLock::new(None)),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Get a source code trace of the current file, line and column.
|
|
#[macro_export] macro_rules! get_trace
|
|
{
|
|
() => {
|
|
$crate::log::Trace::new(Some(file!()), Some(line!()), Some(column!()))
|
|
}
|
|
}
|
|
|