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Auto merge of #5096 - eddyb:mac-name, r=oli-obk

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Don't use ExpnKind::descr to get the name of a bang macro.

This is the same change as the first commit in rust-lang/rust#68407, but applied to clippy.
The new code should work both before and after the changes in rust-lang/rust#68407.

changelog: none
This commit is contained in:
bors 2020-01-26 07:42:55 +00:00
commit b6a976676c
1 changed files with 13 additions and 13 deletions
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20
clippy_lints/src/utils/mod.rs
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@ -42,7 +42,7 @@ use rustc_hir::intravisit::{NestedVisitorMap, Visitor};
use rustc_hir::Node;
use rustc_hir::*;
use rustc_lint::{LateContext, Level, Lint, LintContext};
use rustc_span::hygiene::ExpnKind;
use rustc_span::hygiene::{ExpnKind, MacroKind};
use rustc_span::symbol::{self, kw, Symbol};
use rustc_span::{BytePos, Pos, Span, DUMMY_SP};
use smallvec::SmallVec;
@ -758,14 +758,15 @@ pub fn is_expn_of(mut span: Span, name: &str) -> Option<Span> {
loop {
if span.from_expansion() {
let data = span.ctxt().outer_expn_data();
let mac_name = data.kind.descr();
let new_span = data.call_site;
if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind {
if mac_name.as_str() == name {
return Some(new_span);
} else {
span = new_span;
}
}
span = new_span;
} else {
return None;
}
@ -785,17 +786,16 @@ pub fn is_expn_of(mut span: Span, name: &str) -> Option<Span> {
pub fn is_direct_expn_of(span: Span, name: &str) -> Option<Span> {
if span.from_expansion() {
let data = span.ctxt().outer_expn_data();
let mac_name = data.kind.descr();
let new_span = data.call_site;
if let ExpnKind::Macro(MacroKind::Bang, mac_name) = data.kind {
if mac_name.as_str() == name {
Some(new_span)
} else {
None
return Some(new_span);
}
} else {
None
}
}
None
}
/// Convenience function to get the return type of a function.