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Small cleanup for check_proc_macro.rs

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This commit is contained in:
Jason Newcomb 2022-08-07 21:44:32 -04:00
parent 8dda974a27
commit 745b194292
1 changed files with 9 additions and 3 deletions
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12
clippy_utils/src/check_proc_macro.rs
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@ -24,11 +24,16 @@ use rustc_session::Session;
use rustc_span::{Span, Symbol};
use rustc_target::spec::abi::Abi;
/// The search pattern to look for. Used by `span_matches_pat`
#[derive(Clone, Copy)]
pub enum Pat {
/// A single string.
Str(&'static str),
/// Any of the given strings.
MultiStr(&'static [&'static str]),
/// The string representation of the symbol.
Sym(Symbol),
/// Any decimal or hexadecimal digit depending on the location.
Num,
}
@ -108,9 +113,9 @@ fn expr_search_pat(tcx: TyCtxt<'_>, e: &Expr<'_>) -> (Pat, Pat) {
ExprKind::Box(e) => (Pat::Str("box"), expr_search_pat(tcx, e).1),
ExprKind::ConstBlock(_) => (Pat::Str("const"), Pat::Str("}")),
ExprKind::Tup([]) => (Pat::Str(")"), Pat::Str("(")),
ExprKind::Unary(UnOp::Deref, _) => (Pat::Str("*"), expr_search_pat(tcx, e).1),
ExprKind::Unary(UnOp::Not, _) => (Pat::Str("!"), expr_search_pat(tcx, e).1),
ExprKind::Unary(UnOp::Neg, _) => (Pat::Str("-"), expr_search_pat(tcx, e).1),
ExprKind::Unary(UnOp::Deref, e) => (Pat::Str("*"), expr_search_pat(tcx, e).1),
ExprKind::Unary(UnOp::Not, e) => (Pat::Str("!"), expr_search_pat(tcx, e).1),
ExprKind::Unary(UnOp::Neg, e) => (Pat::Str("-"), expr_search_pat(tcx, e).1),
ExprKind::Lit(ref lit) => lit_search_pat(&lit.node),
ExprKind::Array(_) | ExprKind::Repeat(..) => (Pat::Str("["), Pat::Str("]")),
ExprKind::Call(e, []) | ExprKind::MethodCall(_, [e], _) => (expr_search_pat(tcx, e).0, Pat::Str("(")),
@ -154,6 +159,7 @@ fn expr_search_pat(tcx: TyCtxt<'_>, e: &Expr<'_>) -> (Pat, Pat) {
ExprKind::Continue(Destination { label: None, .. }) => (Pat::Str("continue"), Pat::Str("continue")),
ExprKind::Continue(Destination { label: Some(name), .. }) => (Pat::Str("continue"), Pat::Sym(name.ident.name)),
ExprKind::Ret(None) => (Pat::Str("return"), Pat::Str("return")),
ExprKind::Ret(Some(e)) => (Pat::Str("return"), expr_search_pat(tcx, e).1),
ExprKind::Struct(path, _, _) => (qpath_search_pat(path).0, Pat::Str("}")),
ExprKind::Yield(e, YieldSource::Yield) => (Pat::Str("yield"), expr_search_pat(tcx, e).1),
_ => (Pat::Str(""), Pat::Str("")),