Files
rust/compiler/rustc_span/src/profiling.rs
T
Urgau 8cbfb26383 Overhaul filename handling for cross-compiler consistency
This commit refactors `SourceMap` and most importantly `RealFileName` to
make it self-contained in order to achieve cross-compiler consistency.

This is achieved:
 - by making `RealFileName` immutable
 - by only having `SourceMap::to_real_filename` create `RealFileName`
 - by also making `RealFileName` holds it's working directory,
   it's embeddable name and the remapped scopes
 - by making most `FileName` and `RealFileName` methods take a scope as
   an argument

In order for `SourceMap::to_real_filename` to know which scopes to apply
`FilePathMapping` now takes the current remapping scopes to apply, which
makes `FileNameDisplayPreference` and company useless and are removed.

The scopes type `RemapPathScopeComponents` was moved from
`rustc_session::config` to `rustc_span`.

The previous system for scoping the local/remapped filenames
`RemapFileNameExt::for_scope` is no longer useful as it's replaced by
methods on `FileName` and `RealFileName`.
2025-12-12 07:33:09 +01:00

31 lines
1.1 KiB
Rust

use std::borrow::Borrow;
use rustc_data_structures::profiling::EventArgRecorder;
use crate::RemapPathScopeComponents;
use crate::source_map::SourceMap;
/// Extension trait for self-profiling purposes: allows to record spans within a generic activity's
/// event arguments.
pub trait SpannedEventArgRecorder {
/// Records the following event arguments within the current generic activity being profiled:
/// - the provided `event_arg`
/// - a string representation of the provided `span`
///
/// Note: when self-profiling with costly event arguments, at least one argument
/// needs to be recorded. A panic will be triggered if that doesn't happen.
fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)
where
A: Borrow<str> + Into<String>;
}
impl SpannedEventArgRecorder for EventArgRecorder<'_> {
fn record_arg_with_span<A>(&mut self, source_map: &SourceMap, event_arg: A, span: crate::Span)
where
A: Borrow<str> + Into<String>,
{
self.record_arg(event_arg);
self.record_arg(source_map.span_to_string(span, RemapPathScopeComponents::DEBUGINFO));
}
}