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Rollup merge of #122811 - nnethercote:mv-SourceMap-init, r=WaffleLapkin

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Move `SourceMap` initialization

So it happens at the same time as `SessionGlobals` initialization, rather than shortly afterward.

r? `@WaffleLapkin`
This commit is contained in:
Guillaume Gomez 2024-04-16 21:41:23 +02:00 committed by GitHub
commit 14496d561e
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GPG Key ID: B5690EEEBB952194
10 changed files with 175 additions and 175 deletions
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2
compiler/rustc_hir/src/tests.rs
View File

@ -14,7 +14,7 @@ fn def_path_hash_depends_on_crate_id() {
// the crate by changing the crate disambiguator (e.g. via bumping the
// crate's version number).
create_session_globals_then(Edition::Edition2024, || {
create_session_globals_then(Edition::Edition2024, None, || {
let id0 = StableCrateId::new(Symbol::intern("foo"), false, vec!["1".to_string()], "");
let id1 = StableCrateId::new(Symbol::intern("foo"), false, vec!["2".to_string()], "");

105
compiler/rustc_interface/src/interface.rs
View File

@ -5,6 +5,7 @@
use rustc_codegen_ssa::traits::CodegenBackend;
use rustc_data_structures::defer;
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::jobserver;
use rustc_data_structures::stable_hasher::StableHasher;
use rustc_data_structures::sync::Lrc;
use rustc_errors::registry::Registry;
@ -21,7 +22,7 @@
use rustc_session::filesearch::{self, sysroot_candidates};
use rustc_session::parse::ParseSess;
use rustc_session::{lint, CompilerIO, EarlyDiagCtxt, Session};
use rustc_span::source_map::FileLoader;
use rustc_span::source_map::{FileLoader, RealFileLoader, SourceMapInputs};
use rustc_span::symbol::sym;
use rustc_span::FileName;
use std::path::PathBuf;
@ -323,6 +324,18 @@ pub struct Config {
pub expanded_args: Vec<String>,
}
/// Initialize jobserver before getting `jobserver::client` and `build_session`.
pub(crate) fn initialize_checked_jobserver(early_dcx: &EarlyDiagCtxt) {
jobserver::initialize_checked(|err| {
#[allow(rustc::untranslatable_diagnostic)]
#[allow(rustc::diagnostic_outside_of_impl)]
early_dcx
.early_struct_warn(err)
.with_note("the build environment is likely misconfigured")
.emit()
});
}
// JUSTIFICATION: before session exists, only config
#[allow(rustc::bad_opt_access)]
#[allow(rustc::untranslatable_diagnostic)] // FIXME: make this translatable
@ -334,20 +347,25 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
// Check jobserver before run_in_thread_pool_with_globals, which call jobserver::acquire_thread
let early_dcx = EarlyDiagCtxt::new(config.opts.error_format);
early_dcx.initialize_checked_jobserver();
initialize_checked_jobserver(&early_dcx);
crate::callbacks::setup_callbacks();
let sysroot = filesearch::materialize_sysroot(config.opts.maybe_sysroot.clone());
let target = config::build_target_config(&early_dcx, &config.opts, &sysroot);
let file_loader = config.file_loader.unwrap_or_else(|| Box::new(RealFileLoader));
let path_mapping = config.opts.file_path_mapping();
let hash_kind = config.opts.unstable_opts.src_hash_algorithm(&target);
util::run_in_thread_pool_with_globals(
config.opts.edition,
config.opts.unstable_opts.threads,
SourceMapInputs { file_loader, path_mapping, hash_kind },
|current_gcx| {
crate::callbacks::setup_callbacks();
// The previous `early_dcx` can't be reused here because it doesn't
// impl `Send`. Creating a new one is fine.
let early_dcx = EarlyDiagCtxt::new(config.opts.error_format);
let sysroot = filesearch::materialize_sysroot(config.opts.maybe_sysroot.clone());
let target = config::build_target_config(&early_dcx, &config.opts, &sysroot);
let codegen_backend = match config.make_codegen_backend {
None => util::get_codegen_backend(
&early_dcx,
@ -372,9 +390,7 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
config.opts.unstable_opts.translate_directionality_markers,
) {
Ok(bundle) => bundle,
Err(e) => {
early_dcx.early_fatal(format!("failed to load fluent bundle: {e}"));
}
Err(e) => early_dcx.early_fatal(format!("failed to load fluent bundle: {e}")),
};
let mut locale_resources = Vec::from(config.locale_resources);
@ -393,7 +409,6 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
config.registry.clone(),
locale_resources,
config.lint_caps,
config.file_loader,
target,
sysroot,
util::rustc_version_str().unwrap_or("unknown"),
@ -440,45 +455,43 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
current_gcx,
};
rustc_span::set_source_map(compiler.sess.psess.clone_source_map(), move || {
// There are two paths out of `f`.
// - Normal exit.
// - Panic, e.g. triggered by `abort_if_errors`.
//
// We must run `finish_diagnostics` in both cases.
let res = {
// If `f` panics, `finish_diagnostics` will run during
// unwinding because of the `defer`.
let mut guar = None;
let sess_abort_guard = defer(|| {
guar = compiler.sess.finish_diagnostics(&config.registry);
});
// There are two paths out of `f`.
// - Normal exit.
// - Panic, e.g. triggered by `abort_if_errors`.
//
// We must run `finish_diagnostics` in both cases.
let res = {
// If `f` panics, `finish_diagnostics` will run during
// unwinding because of the `defer`.
let mut guar = None;
let sess_abort_guard = defer(|| {
guar = compiler.sess.finish_diagnostics(&config.registry);
});
let res = f(&compiler);
let res = f(&compiler);
// If `f` doesn't panic, `finish_diagnostics` will run
// normally when `sess_abort_guard` is dropped.
drop(sess_abort_guard);
// If `f` doesn't panic, `finish_diagnostics` will run
// normally when `sess_abort_guard` is dropped.
drop(sess_abort_guard);
// If `finish_diagnostics` emits errors (e.g. stashed
// errors) we can't return an error directly, because the
// return type of this function is `R`, not `Result<R, E>`.
// But we need to communicate the errors' existence to the
// caller, otherwise the caller might mistakenly think that
// no errors occurred and return a zero exit code. So we
// abort (panic) instead, similar to if `f` had panicked.
if guar.is_some() {
compiler.sess.dcx().abort_if_errors();
}
res
};
let prof = compiler.sess.prof.clone();
prof.generic_activity("drop_compiler").run(move || drop(compiler));
// If `finish_diagnostics` emits errors (e.g. stashed
// errors) we can't return an error directly, because the
// return type of this function is `R`, not `Result<R, E>`.
// But we need to communicate the errors' existence to the
// caller, otherwise the caller might mistakenly think that
// no errors occurred and return a zero exit code. So we
// abort (panic) instead, similar to if `f` had panicked.
if guar.is_some() {
compiler.sess.dcx().abort_if_errors();
}
res
})
};
let prof = compiler.sess.prof.clone();
prof.generic_activity("drop_compiler").run(move || drop(compiler));
res
},
)
}

98
compiler/rustc_interface/src/tests.rs
View File

@ -1,5 +1,5 @@
#![allow(rustc::bad_opt_access)]
use crate::interface::parse_cfg;
use crate::interface::{initialize_checked_jobserver, parse_cfg};
use rustc_data_structures::profiling::TimePassesFormat;
use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig};
use rustc_session::config::{
@ -16,6 +16,7 @@
use rustc_session::utils::{CanonicalizedPath, NativeLib, NativeLibKind};
use rustc_session::{build_session, filesearch, getopts, CompilerIO, EarlyDiagCtxt, Session};
use rustc_span::edition::{Edition, DEFAULT_EDITION};
use rustc_span::source_map::{RealFileLoader, SourceMapInputs};
use rustc_span::symbol::sym;
use rustc_span::{FileName, SourceFileHashAlgorithm};
use rustc_target::spec::{CodeModel, LinkerFlavorCli, MergeFunctions, PanicStrategy, RelocModel};
@ -25,42 +26,52 @@
use std::path::{Path, PathBuf};
use std::sync::Arc;
fn mk_session(matches: getopts::Matches) -> (Session, Cfg) {
fn sess_and_cfg<F>(args: &[&'static str], f: F)
where
F: FnOnce(Session, Cfg),
{
let mut early_dcx = EarlyDiagCtxt::new(ErrorOutputType::default());
early_dcx.initialize_checked_jobserver();
initialize_checked_jobserver(&early_dcx);
let registry = registry::Registry::new(&[]);
let matches = optgroups().parse(args).unwrap();
let sessopts = build_session_options(&mut early_dcx, &matches);
let temps_dir = sessopts.unstable_opts.temps_dir.as_deref().map(PathBuf::from);
let io = CompilerIO {
input: Input::Str { name: FileName::Custom(String::new()), input: String::new() },
output_dir: None,
output_file: None,
temps_dir,
};
let sysroot = filesearch::materialize_sysroot(sessopts.maybe_sysroot.clone());
let target = rustc_session::config::build_target_config(&early_dcx, &sessopts, &sysroot);
let hash_kind = sessopts.unstable_opts.src_hash_algorithm(&target);
let sm_inputs = Some(SourceMapInputs {
file_loader: Box::new(RealFileLoader) as _,
path_mapping: sessopts.file_path_mapping(),
hash_kind,
});
let sess = build_session(
early_dcx,
sessopts,
io,
None,
registry,
vec![],
Default::default(),
None,
target,
sysroot,
"",
None,
Arc::default(),
Default::default(),
);
let cfg = parse_cfg(&sess.dcx(), matches.opt_strs("cfg"));
(sess, cfg)
rustc_span::create_session_globals_then(DEFAULT_EDITION, sm_inputs, || {
let temps_dir = sessopts.unstable_opts.temps_dir.as_deref().map(PathBuf::from);
let io = CompilerIO {
input: Input::Str { name: FileName::Custom(String::new()), input: String::new() },
output_dir: None,
output_file: None,
temps_dir,
};
let sess = build_session(
early_dcx,
sessopts,
io,
None,
registry::Registry::new(&[]),
vec![],
Default::default(),
target,
sysroot,
"",
None,
Arc::default(),
Default::default(),
);
let cfg = parse_cfg(&sess.dcx(), matches.opt_strs("cfg"));
let cfg = build_configuration(&sess, cfg);
f(sess, cfg)
});
}
fn new_public_extern_entry<S, I>(locations: I) -> ExternEntry
@ -125,21 +136,15 @@ fn assert_non_crate_hash_different(x: &Options, y: &Options) {
// When the user supplies --test we should implicitly supply --cfg test
#[test]
fn test_switch_implies_cfg_test() {
rustc_span::create_default_session_globals_then(|| {
let matches = optgroups().parse(&["--test".to_string()]).unwrap();
let (sess, cfg) = mk_session(matches);
let cfg = build_configuration(&sess, cfg);
sess_and_cfg(&["--test"], |_sess, cfg| {
assert!(cfg.contains(&(sym::test, None)));
});
})
}
// When the user supplies --test and --cfg test, don't implicitly add another --cfg test
#[test]
fn test_switch_implies_cfg_test_unless_cfg_test() {
rustc_span::create_default_session_globals_then(|| {
let matches = optgroups().parse(&["--test".to_string(), "--cfg=test".to_string()]).unwrap();
let (sess, cfg) = mk_session(matches);
let cfg = build_configuration(&sess, cfg);
sess_and_cfg(&["--test", "--cfg=test"], |_sess, cfg| {
let mut test_items = cfg.iter().filter(|&&(name, _)| name == sym::test);
assert!(test_items.next().is_some());
assert!(test_items.next().is_none());
@ -148,22 +153,15 @@ fn test_switch_implies_cfg_test_unless_cfg_test() {
#[test]
fn test_can_print_warnings() {
rustc_span::create_default_session_globals_then(|| {
let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
let (sess, _) = mk_session(matches);
sess_and_cfg(&["-Awarnings"], |sess, _cfg| {
assert!(!sess.dcx().can_emit_warnings());
});
rustc_span::create_default_session_globals_then(|| {
let matches =
optgroups().parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()]).unwrap();
let (sess, _) = mk_session(matches);
sess_and_cfg(&["-Awarnings", "-Dwarnings"], |sess, _cfg| {
assert!(sess.dcx().can_emit_warnings());
});
rustc_span::create_default_session_globals_then(|| {
let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
let (sess, _) = mk_session(matches);
sess_and_cfg(&["-Adead_code"], |sess, _cfg| {
assert!(sess.dcx().can_emit_warnings());
});
}

16
compiler/rustc_interface/src/util.rs
View File

@ -14,6 +14,7 @@
use rustc_session::{filesearch, Session};
use rustc_span::edit_distance::find_best_match_for_name;
use rustc_span::edition::Edition;
use rustc_span::source_map::SourceMapInputs;
use rustc_span::symbol::sym;
use rustc_target::spec::Target;
use session::output::{categorize_crate_type, CRATE_TYPES};
@ -65,8 +66,9 @@ fn init_stack_size() -> usize {
})
}
pub(crate) fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
edition: Edition,
sm_inputs: SourceMapInputs,
f: F,
) -> R {
// The "thread pool" is a single spawned thread in the non-parallel
@ -84,7 +86,9 @@ pub(crate) fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: S
// name contains null bytes.
let r = builder
.spawn_scoped(s, move || {
rustc_span::create_session_globals_then(edition, || f(CurrentGcx::new()))
rustc_span::create_session_globals_then(edition, Some(sm_inputs), || {
f(CurrentGcx::new())
})
})
.unwrap()
.join();
@ -100,15 +104,17 @@ pub(crate) fn run_in_thread_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: S
pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
edition: Edition,
_threads: usize,
sm_inputs: SourceMapInputs,
f: F,
) -> R {
run_in_thread_with_globals(edition, f)
run_in_thread_with_globals(edition, sm_inputs, f)
}
#[cfg(parallel_compiler)]
pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send, R: Send>(
edition: Edition,
threads: usize,
sm_inputs: SourceMapInputs,
f: F,
) -> R {
use rustc_data_structures::{defer, jobserver, sync::FromDyn};
@ -120,7 +126,7 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send,
let registry = sync::Registry::new(std::num::NonZero::new(threads).unwrap());
if !sync::is_dyn_thread_safe() {
return run_in_thread_with_globals(edition, |current_gcx| {
return run_in_thread_with_globals(edition, sm_inputs, |current_gcx| {
// Register the thread for use with the `WorkerLocal` type.
registry.register();
@ -169,7 +175,7 @@ pub(crate) fn run_in_thread_pool_with_globals<F: FnOnce(CurrentGcx) -> R + Send,
// pool. Upon creation, each worker thread created gets a copy of the
// session globals in TLS. This is possible because `SessionGlobals` impls
// `Send` in the parallel compiler.
rustc_span::create_session_globals_then(edition, || {
rustc_span::create_session_globals_then(edition, Some(sm_inputs), || {
rustc_span::with_session_globals(|session_globals| {
let session_globals = FromDyn::from(session_globals);
builder

2
compiler/rustc_log/src/lib.rs
View File

@ -17,7 +17,7 @@
//! rustc_log::init_logger(rustc_log::LoggerConfig::from_env("LOG")).unwrap();
//!
//! let edition = rustc_span::edition::Edition::Edition2021;
//! rustc_span::create_session_globals_then(edition, || {
//! rustc_span::create_session_globals_then(edition, None, || {
//! /* ... */
//! });
//! }

12
compiler/rustc_session/src/config.rs
View File

@ -1125,7 +1125,7 @@ pub fn build_dep_graph(&self) -> bool {
|| self.unstable_opts.query_dep_graph
}
pub(crate) fn file_path_mapping(&self) -> FilePathMapping {
pub fn file_path_mapping(&self) -> FilePathMapping {
file_path_mapping(self.remap_path_prefix.clone(), &self.unstable_opts)
}
@ -1162,6 +1162,16 @@ pub fn dcx_flags(&self, can_emit_warnings: bool) -> DiagCtxtFlags {
track_diagnostics: self.track_diagnostics,
}
}
pub fn src_hash_algorithm(&self, target: &Target) -> SourceFileHashAlgorithm {
self.src_hash_algorithm.unwrap_or_else(|| {
if target.is_like_msvc {
SourceFileHashAlgorithm::Sha256
} else {
SourceFileHashAlgorithm::Md5
}
})
}
}
// The type of entry function, so users can have their own entry functions

34
compiler/rustc_session/src/session.rs
View File

@ -28,9 +28,9 @@
use rustc_macros::HashStable_Generic;
pub use rustc_span::def_id::StableCrateId;
use rustc_span::edition::Edition;
use rustc_span::source_map::{FileLoader, FilePathMapping, RealFileLoader, SourceMap};
use rustc_span::source_map::{FilePathMapping, SourceMap};
use rustc_span::{FileNameDisplayPreference, RealFileName};
use rustc_span::{SourceFileHashAlgorithm, Span, Symbol};
use rustc_span::{Span, Symbol};
use rustc_target::asm::InlineAsmArch;
use rustc_target::spec::{CodeModel, PanicStrategy, RelocModel, RelroLevel};
use rustc_target::spec::{
@ -988,7 +988,6 @@ pub fn build_session(
registry: rustc_errors::registry::Registry,
fluent_resources: Vec<&'static str>,
driver_lint_caps: FxHashMap<lint::LintId, lint::Level>,
file_loader: Option<Box<dyn FileLoader + Send + Sync + 'static>>,
target: Target,
sysroot: PathBuf,
cfg_version: &'static str,
@ -1015,24 +1014,11 @@ pub fn build_session(
early_dcx.early_warn(warning)
}
let loader = file_loader.unwrap_or_else(|| Box::new(RealFileLoader));
let hash_kind = sopts.unstable_opts.src_hash_algorithm.unwrap_or_else(|| {
if target.is_like_msvc {
SourceFileHashAlgorithm::Sha256
} else {
SourceFileHashAlgorithm::Md5
}
});
let source_map = Lrc::new(SourceMap::with_file_loader_and_hash_kind(
loader,
sopts.file_path_mapping(),
hash_kind,
));
let fallback_bundle = fallback_fluent_bundle(
fluent_resources,
sopts.unstable_opts.translate_directionality_markers,
);
let source_map = rustc_span::source_map::get_source_map().unwrap();
let emitter = default_emitter(&sopts, registry, source_map.clone(), bundle, fallback_bundle);
let mut dcx =
@ -1411,16 +1397,10 @@ pub fn early_warn(&self, msg: impl Into<DiagMessage>) {
self.dcx.warn(msg)
}
pub fn initialize_checked_jobserver(&self) {
// initialize jobserver before getting `jobserver::client` and `build_session`.
jobserver::initialize_checked(|err| {
#[allow(rustc::untranslatable_diagnostic)]
#[allow(rustc::diagnostic_outside_of_impl)]
self.dcx
.struct_warn(err)
.with_note("the build environment is likely misconfigured")
.emit()
});
#[allow(rustc::untranslatable_diagnostic)]
#[allow(rustc::diagnostic_outside_of_impl)]
pub fn early_struct_warn(&self, msg: impl Into<DiagMessage>) -> Diag<'_, ()> {
self.dcx.struct_warn(msg)
}
}

53
compiler/rustc_span/src/lib.rs
View File

@ -49,7 +49,7 @@
mod caching_source_map_view;
pub mod source_map;
pub use self::caching_source_map_view::CachingSourceMapView;
use source_map::SourceMap;
use source_map::{SourceMap, SourceMapInputs};
pub mod edition;
use edition::Edition;
@ -104,35 +104,35 @@ pub struct SessionGlobals {
metavar_spans: Lock<FxHashMap<Span, Span>>,
hygiene_data: Lock<hygiene::HygieneData>,
/// A reference to the source map in the `Session`. It's an `Option`
/// because it can't be initialized until `Session` is created, which
/// happens after `SessionGlobals`. `set_source_map` does the
/// initialization.
///
/// This field should only be used in places where the `Session` is truly
/// not available, such as `<Span as Debug>::fmt`.
source_map: Lock<Option<Lrc<SourceMap>>>,
/// The session's source map, if there is one. This field should only be
/// used in places where the `Session` is truly not available, such as
/// `<Span as Debug>::fmt`.
source_map: Option<Lrc<SourceMap>>,
}
impl SessionGlobals {
pub fn new(edition: Edition) -> SessionGlobals {
pub fn new(edition: Edition, sm_inputs: Option<SourceMapInputs>) -> SessionGlobals {
SessionGlobals {
symbol_interner: symbol::Interner::fresh(),
span_interner: Lock::new(span_encoding::SpanInterner::default()),
metavar_spans: Default::default(),
hygiene_data: Lock::new(hygiene::HygieneData::new(edition)),
source_map: Lock::new(None),
source_map: sm_inputs.map(|inputs| Lrc::new(SourceMap::with_inputs(inputs))),
}
}
}
pub fn create_session_globals_then<R>(edition: Edition, f: impl FnOnce() -> R) -> R {
pub fn create_session_globals_then<R>(
edition: Edition,
sm_inputs: Option<SourceMapInputs>,
f: impl FnOnce() -> R,
) -> R {
assert!(
!SESSION_GLOBALS.is_set(),
"SESSION_GLOBALS should never be overwritten! \
Use another thread if you need another SessionGlobals"
);
let session_globals = SessionGlobals::new(edition);
let session_globals = SessionGlobals::new(edition, sm_inputs);
SESSION_GLOBALS.set(&session_globals, f)
}
@ -145,12 +145,13 @@ pub fn set_session_globals_then<R>(session_globals: &SessionGlobals, f: impl FnO
SESSION_GLOBALS.set(session_globals, f)
}
/// No source map.
pub fn create_session_if_not_set_then<R, F>(edition: Edition, f: F) -> R
where
F: FnOnce(&SessionGlobals) -> R,
{
if !SESSION_GLOBALS.is_set() {
let session_globals = SessionGlobals::new(edition);
let session_globals = SessionGlobals::new(edition, None);
SESSION_GLOBALS.set(&session_globals, || SESSION_GLOBALS.with(f))
} else {
SESSION_GLOBALS.with(f)
@ -164,8 +165,9 @@ pub fn with_session_globals<R, F>(f: F) -> R
SESSION_GLOBALS.with(f)
}
/// Default edition, no source map.
pub fn create_default_session_globals_then<R>(f: impl FnOnce() -> R) -> R {
create_session_globals_then(edition::DEFAULT_EDITION, f)
create_session_globals_then(edition::DEFAULT_EDITION, None, f)
}
// If this ever becomes non thread-local, `decode_syntax_context`
@ -1318,25 +1320,6 @@ fn decode(s: &mut D) -> AttrId {
}
}
/// Insert `source_map` into the session globals for the duration of the
/// closure's execution.
pub fn set_source_map<T, F: FnOnce() -> T>(source_map: Lrc<SourceMap>, f: F) -> T {
with_session_globals(|session_globals| {
*session_globals.source_map.borrow_mut() = Some(source_map);
});
struct ClearSourceMap;
impl Drop for ClearSourceMap {
fn drop(&mut self) {
with_session_globals(|session_globals| {
session_globals.source_map.borrow_mut().take();
});
}
}
let _guard = ClearSourceMap;
f()
}
impl fmt::Debug for Span {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
// Use the global `SourceMap` to print the span. If that's not
@ -1352,7 +1335,7 @@ fn fallback(span: Span, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if SESSION_GLOBALS.is_set() {
with_session_globals(|session_globals| {
if let Some(source_map) = &*session_globals.source_map.borrow() {
if let Some(source_map) = &session_globals.source_map {
write!(f, "{} ({:?})", source_map.span_to_diagnostic_string(*self), self.ctxt())
} else {
fallback(*self, f)

26
compiler/rustc_span/src/source_map.rs
View File

@ -167,9 +167,17 @@ struct SourceMapFiles {
stable_id_to_source_file: UnhashMap<StableSourceFileId, Lrc<SourceFile>>,
}
/// Used to construct a `SourceMap` with `SourceMap::with_inputs`.
pub struct SourceMapInputs {
pub file_loader: Box<dyn FileLoader + Send + Sync>,
pub path_mapping: FilePathMapping,
pub hash_kind: SourceFileHashAlgorithm,
}
pub struct SourceMap {
files: RwLock<SourceMapFiles>,
file_loader: IntoDynSyncSend<Box<dyn FileLoader + Sync + Send>>,
// This is used to apply the file path remapping as specified via
// `--remap-path-prefix` to all `SourceFile`s allocated within this `SourceMap`.
path_mapping: FilePathMapping,
@ -180,17 +188,15 @@ pub struct SourceMap {
impl SourceMap {
pub fn new(path_mapping: FilePathMapping) -> SourceMap {
Self::with_file_loader_and_hash_kind(
Box::new(RealFileLoader),
Self::with_inputs(SourceMapInputs {
file_loader: Box::new(RealFileLoader),
path_mapping,
SourceFileHashAlgorithm::Md5,
)
hash_kind: SourceFileHashAlgorithm::Md5,
})
}
pub fn with_file_loader_and_hash_kind(
file_loader: Box<dyn FileLoader + Sync + Send>,
path_mapping: FilePathMapping,
hash_kind: SourceFileHashAlgorithm,
pub fn with_inputs(
SourceMapInputs { file_loader, path_mapping, hash_kind }: SourceMapInputs,
) -> SourceMap {
SourceMap {
files: Default::default(),
@ -1054,6 +1060,10 @@ pub fn mac_call_stmt_semi_span(&self, mac_call: Span) -> Option<Span> {
}
}
pub fn get_source_map() -> Option<Lrc<SourceMap>> {
with_session_globals(|session_globals| session_globals.source_map.clone())
}
#[derive(Clone)]
pub struct FilePathMapping {
mapping: Vec<(PathBuf, PathBuf)>,

2
src/tools/clippy/clippy_lints/src/doc/needless_doctest_main.rs
View File

@ -38,7 +38,7 @@ pub fn check(
// of all `#[test]` attributes in not ignored code examples
fn check_code_sample(code: String, edition: Edition, ignore: bool) -> (bool, Vec<Range<usize>>) {
rustc_driver::catch_fatal_errors(|| {
rustc_span::create_session_globals_then(edition, || {
rustc_span::create_session_globals_then(edition, None, || {
let mut test_attr_spans = vec![];
let filename = FileName::anon_source_code(&code);