bjoernager/rust
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Auto merge of #91779 - ridwanabdillahi:natvis, r=michaelwoerister

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Add a new Rust attribute to support embedding debugger visualizers

Implemented [this RFC](https://github.com/rust-lang/rfcs/pull/3191) to add support for embedding debugger visualizers into a PDB.

Added a new attribute `#[debugger_visualizer]` and updated the `CrateMetadata` to store debugger visualizers for crate dependencies.

RFC: https://github.com/rust-lang/rfcs/pull/3191
This commit is contained in:
bors 2022-05-05 12:26:38 +00:00
commit a7d6768e3b
29 changed files with 554 additions and 76 deletions
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41
compiler/rustc_expand/src/base.rs
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@ -10,7 +10,7 @@ use rustc_ast::{self as ast, AstLike, Attribute, Item, NodeId, PatKind};
use rustc_attr::{self as attr, Deprecation, Stability};
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::sync::{self, Lrc};
use rustc_errors::{Applicability, DiagnosticBuilder, ErrorGuaranteed, MultiSpan};
use rustc_errors::{Applicability, DiagnosticBuilder, ErrorGuaranteed, MultiSpan, PResult};
use rustc_lint_defs::builtin::PROC_MACRO_BACK_COMPAT;
use rustc_lint_defs::BuiltinLintDiagnostics;
use rustc_parse::{self, nt_to_tokenstream, parser, MACRO_ARGUMENTS};
@ -20,7 +20,7 @@ use rustc_span::edition::Edition;
use rustc_span::hygiene::{AstPass, ExpnData, ExpnKind, LocalExpnId};
use rustc_span::source_map::SourceMap;
use rustc_span::symbol::{kw, sym, Ident, Symbol};
use rustc_span::{Span, DUMMY_SP};
use rustc_span::{FileName, Span, DUMMY_SP};
use smallvec::{smallvec, SmallVec};
use std::default::Default;
@ -1136,6 +1136,43 @@ impl<'a> ExtCtxt<'a> {
}
}
/// Resolves a `path` mentioned inside Rust code, returning an absolute path.
///
/// This unifies the logic used for resolving `include_X!`.
pub fn resolve_path(
parse_sess: &ParseSess,
path: impl Into<PathBuf>,
span: Span,
) -> PResult<'_, PathBuf> {
let path = path.into();
// Relative paths are resolved relative to the file in which they are found
// after macro expansion (that is, they are unhygienic).
if !path.is_absolute() {
let callsite = span.source_callsite();
let mut result = match parse_sess.source_map().span_to_filename(callsite) {
FileName::Real(name) => name
.into_local_path()
.expect("attempting to resolve a file path in an external file"),
FileName::DocTest(path, _) => path,
other => {
return Err(parse_sess.span_diagnostic.struct_span_err(
span,
&format!(
"cannot resolve relative path in non-file source `{}`",
parse_sess.source_map().filename_for_diagnostics(&other)
),
));
}
};
result.pop();
result.push(path);
Ok(result)
} else {
Ok(path)
}
}
/// Extracts a string literal from the macro expanded version of `expr`,
/// returning a diagnostic error of `err_msg` if `expr` is not a string literal.
/// The returned bool indicates whether an applicable suggestion has already been