diff options
Diffstat (limited to 'compiler/rustc_errors/src/lib.rs')
| -rw-r--r-- | compiler/rustc_errors/src/lib.rs | 71 |
1 files changed, 64 insertions, 7 deletions
diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs index 0963ea71f..eb0506c45 100644 --- a/compiler/rustc_errors/src/lib.rs +++ b/compiler/rustc_errors/src/lib.rs @@ -5,6 +5,7 @@ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")] #![feature(drain_filter)] #![feature(if_let_guard)] +#![feature(is_terminal)] #![feature(adt_const_params)] #![feature(let_chains)] #![feature(never_type)] @@ -376,7 +377,7 @@ pub use diagnostic::{ DiagnosticStyledString, IntoDiagnosticArg, SubDiagnostic, }; pub use diagnostic_builder::{DiagnosticBuilder, EmissionGuarantee, Noted}; -pub use diagnostic_impls::DiagnosticArgFromDisplay; +pub use diagnostic_impls::{DiagnosticArgFromDisplay, DiagnosticSymbolList}; use std::backtrace::Backtrace; /// A handler deals with errors and other compiler output. @@ -466,6 +467,10 @@ pub enum StashKey { /// When an invalid lifetime e.g. `'2` should be reinterpreted /// as a char literal in the parser LifetimeIsChar, + /// Maybe there was a typo where a comma was forgotten before + /// FRU syntax + MaybeFruTypo, + CallAssocMethod, } fn default_track_diagnostic(_: &Diagnostic) {} @@ -492,6 +497,8 @@ pub struct HandlerFlags { pub macro_backtrace: bool, /// If true, identical diagnostics are reported only once. pub deduplicate_diagnostics: bool, + /// Track where errors are created. Enabled with `-Ztrack-diagnostics`. + pub track_diagnostics: bool, } impl Drop for HandlerInner { @@ -559,6 +566,7 @@ impl Handler { false, None, flags.macro_backtrace, + flags.track_diagnostics, )); Self::with_emitter_and_flags(emitter, flags) } @@ -641,13 +649,14 @@ impl Handler { inner.stashed_diagnostics = Default::default(); } - /// Stash a given diagnostic with the given `Span` and `StashKey` as the key for later stealing. + /// Stash a given diagnostic with the given `Span` and [`StashKey`] as the key. + /// Retrieve a stashed diagnostic with `steal_diagnostic`. pub fn stash_diagnostic(&self, span: Span, key: StashKey, diag: Diagnostic) { let mut inner = self.inner.borrow_mut(); inner.stash((span, key), diag); } - /// Steal a previously stashed diagnostic with the given `Span` and `StashKey` as the key. + /// Steal a previously stashed diagnostic with the given `Span` and [`StashKey`] as the key. pub fn steal_diagnostic(&self, span: Span, key: StashKey) -> Option<DiagnosticBuilder<'_, ()>> { let mut inner = self.inner.borrow_mut(); inner.steal((span, key)).map(|diag| DiagnosticBuilder::new_diagnostic(self, diag)) @@ -664,6 +673,7 @@ impl Handler { /// Construct a builder with the `msg` at the level appropriate for the specific `EmissionGuarantee`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_diagnostic<G: EmissionGuarantee>( &self, msg: impl Into<DiagnosticMessage>, @@ -677,6 +687,7 @@ impl Handler { /// * `can_emit_warnings` is `true` /// * `is_force_warn` was set in `DiagnosticId::Lint` #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_warn( &self, span: impl Into<MultiSpan>, @@ -693,6 +704,7 @@ impl Handler { /// Attempting to `.emit()` the builder will only emit if either: /// * `can_emit_warnings` is `true` /// * `is_force_warn` was set in `DiagnosticId::Lint` + #[track_caller] pub fn struct_span_warn_with_expectation( &self, span: impl Into<MultiSpan>, @@ -706,6 +718,7 @@ impl Handler { /// Construct a builder at the `Allow` level at the given `span` and with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_allow( &self, span: impl Into<MultiSpan>, @@ -719,6 +732,7 @@ impl Handler { /// Construct a builder at the `Warning` level at the given `span` and with the `msg`. /// Also include a code. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_warn_with_code( &self, span: impl Into<MultiSpan>, @@ -736,6 +750,7 @@ impl Handler { /// * `can_emit_warnings` is `true` /// * `is_force_warn` was set in `DiagnosticId::Lint` #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_warn(&self, msg: impl Into<DiagnosticMessage>) -> DiagnosticBuilder<'_, ()> { DiagnosticBuilder::new(self, Level::Warning(None), msg) } @@ -746,6 +761,7 @@ impl Handler { /// Attempting to `.emit()` the builder will only emit if either: /// * `can_emit_warnings` is `true` /// * `is_force_warn` was set in `DiagnosticId::Lint` + #[track_caller] pub fn struct_warn_with_expectation( &self, msg: impl Into<DiagnosticMessage>, @@ -756,12 +772,14 @@ impl Handler { /// Construct a builder at the `Allow` level with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_allow(&self, msg: impl Into<DiagnosticMessage>) -> DiagnosticBuilder<'_, ()> { DiagnosticBuilder::new(self, Level::Allow, msg) } /// Construct a builder at the `Expect` level with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_expect( &self, msg: impl Into<DiagnosticMessage>, @@ -772,6 +790,7 @@ impl Handler { /// Construct a builder at the `Error` level at the given `span` and with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_err( &self, span: impl Into<MultiSpan>, @@ -784,6 +803,7 @@ impl Handler { /// Construct a builder at the `Error` level at the given `span`, with the `msg`, and `code`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_err_with_code( &self, span: impl Into<MultiSpan>, @@ -798,6 +818,7 @@ impl Handler { /// Construct a builder at the `Error` level with the `msg`. // FIXME: This method should be removed (every error should have an associated error code). #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_err( &self, msg: impl Into<DiagnosticMessage>, @@ -807,12 +828,14 @@ impl Handler { /// This should only be used by `rustc_middle::lint::struct_lint_level`. Do not use it for hard errors. #[doc(hidden)] + #[track_caller] pub fn struct_err_lint(&self, msg: impl Into<DiagnosticMessage>) -> DiagnosticBuilder<'_, ()> { DiagnosticBuilder::new(self, Level::Error { lint: true }, msg) } /// Construct a builder at the `Error` level with the `msg` and the `code`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_err_with_code( &self, msg: impl Into<DiagnosticMessage>, @@ -825,6 +848,7 @@ impl Handler { /// Construct a builder at the `Warn` level with the `msg` and the `code`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_warn_with_code( &self, msg: impl Into<DiagnosticMessage>, @@ -837,6 +861,7 @@ impl Handler { /// Construct a builder at the `Fatal` level at the given `span` and with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_fatal( &self, span: impl Into<MultiSpan>, @@ -849,6 +874,7 @@ impl Handler { /// Construct a builder at the `Fatal` level at the given `span`, with the `msg`, and `code`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_span_fatal_with_code( &self, span: impl Into<MultiSpan>, @@ -862,6 +888,7 @@ impl Handler { /// Construct a builder at the `Error` level with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_fatal(&self, msg: impl Into<DiagnosticMessage>) -> DiagnosticBuilder<'_, !> { DiagnosticBuilder::new_fatal(self, msg) } @@ -874,6 +901,7 @@ impl Handler { /// Construct a builder at the `Note` level with the `msg`. #[rustc_lint_diagnostics] + #[track_caller] pub fn struct_note_without_error( &self, msg: impl Into<DiagnosticMessage>, @@ -882,12 +910,14 @@ impl Handler { } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_fatal(&self, span: impl Into<MultiSpan>, msg: impl Into<DiagnosticMessage>) -> ! { self.emit_diag_at_span(Diagnostic::new(Fatal, msg), span); FatalError.raise() } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_fatal_with_code( &self, span: impl Into<MultiSpan>, @@ -899,6 +929,7 @@ impl Handler { } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_err( &self, span: impl Into<MultiSpan>, @@ -908,6 +939,7 @@ impl Handler { } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_err_with_code( &self, span: impl Into<MultiSpan>, @@ -921,11 +953,13 @@ impl Handler { } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_warn(&self, span: impl Into<MultiSpan>, msg: impl Into<DiagnosticMessage>) { self.emit_diag_at_span(Diagnostic::new(Warning(None), msg), span); } #[rustc_lint_diagnostics] + #[track_caller] pub fn span_warn_with_code( &self, span: impl Into<MultiSpan>, @@ -954,10 +988,12 @@ impl Handler { self.inner.borrow_mut().delay_good_path_bug(msg) } + #[track_caller] pub fn span_bug_no_panic(&self, span: impl Into<MultiSpan>, msg: impl Into<DiagnosticMessage>) { self.emit_diag_at_span(Diagnostic::new(Bug, msg), span); } + #[track_caller] pub fn span_note_without_error( &self, span: impl Into<MultiSpan>, @@ -966,6 +1002,7 @@ impl Handler { self.emit_diag_at_span(Diagnostic::new(Note, msg), span); } + #[track_caller] pub fn span_note_diag( &self, span: Span, @@ -1008,13 +1045,24 @@ impl Handler { } pub fn has_errors_or_lint_errors(&self) -> Option<ErrorGuaranteed> { if self.inner.borrow().has_errors_or_lint_errors() { - Some(ErrorGuaranteed(())) + Some(ErrorGuaranteed::unchecked_claim_error_was_emitted()) } else { None } } - pub fn has_errors_or_delayed_span_bugs(&self) -> bool { - self.inner.borrow().has_errors_or_delayed_span_bugs() + pub fn has_errors_or_delayed_span_bugs(&self) -> Option<ErrorGuaranteed> { + if self.inner.borrow().has_errors_or_delayed_span_bugs() { + Some(ErrorGuaranteed::unchecked_claim_error_was_emitted()) + } else { + None + } + } + pub fn is_compilation_going_to_fail(&self) -> Option<ErrorGuaranteed> { + if self.inner.borrow().is_compilation_going_to_fail() { + Some(ErrorGuaranteed::unchecked_claim_error_was_emitted()) + } else { + None + } } pub fn print_error_count(&self, registry: &Registry) { @@ -1223,6 +1271,10 @@ impl HandlerInner { } if diagnostic.has_future_breakage() { + // Future breakages aren't emitted if they're Level::Allowed, + // but they still need to be constructed and stashed below, + // so they'll trigger the good-path bug check. + self.suppressed_expected_diag = true; self.future_breakage_diagnostics.push(diagnostic.clone()); } @@ -1277,7 +1329,7 @@ impl HandlerInner { diagnostic.children.drain_filter(already_emitted_sub).for_each(|_| {}); - self.emitter.emit_diagnostic(&diagnostic); + self.emitter.emit_diagnostic(diagnostic); if diagnostic.is_error() { self.deduplicated_err_count += 1; } else if let Warning(_) = diagnostic.level { @@ -1444,6 +1496,10 @@ impl HandlerInner { self.err_count() > 0 || self.lint_err_count > 0 || self.warn_count > 0 } + fn is_compilation_going_to_fail(&self) -> bool { + self.has_errors() || self.lint_err_count > 0 || !self.delayed_span_bugs.is_empty() + } + fn abort_if_errors(&mut self) { self.emit_stashed_diagnostics(); @@ -1452,6 +1508,7 @@ impl HandlerInner { } } + #[track_caller] fn span_bug(&mut self, sp: impl Into<MultiSpan>, msg: impl Into<DiagnosticMessage>) -> ! { self.emit_diag_at_span(Diagnostic::new(Bug, msg), sp); panic::panic_any(ExplicitBug); |