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[clang][NFC] Simplify implementation of IgnoreExprNodes #164193

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[clang][NFC] Simplify implementation of IgnoreExprNodes #164193

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12 changes: 1 addition & 11 deletions clang/include/clang/AST/IgnoreExpr.h
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Original file line number Diff line number Diff line change
Expand Up @@ -17,16 +17,6 @@
#include "clang/AST/ExprCXX.h"

namespace clang {
namespace detail {
/// Given an expression E and functions Fn_1,...,Fn_n : Expr * -> Expr *,
/// Return Fn_n(...(Fn_1(E)))
inline Expr *IgnoreExprNodesImpl(Expr *E) { return E; }
template <typename FnTy, typename... FnTys>
Expr *IgnoreExprNodesImpl(Expr *E, FnTy &&Fn, FnTys &&... Fns) {
return IgnoreExprNodesImpl(std::forward<FnTy>(Fn)(E),
std::forward<FnTys>(Fns)...);
}
} // namespace detail

/// Given an expression E and functions Fn_1,...,Fn_n : Expr * -> Expr *,
/// Recursively apply each of the functions to E until reaching a fixed point.
Expand All @@ -35,7 +25,7 @@ template <typename... FnTys> Expr *IgnoreExprNodes(Expr *E, FnTys &&... Fns) {
Expr *LastE = nullptr;
while (E != LastE) {
LastE = E;
E = detail::IgnoreExprNodesImpl(E, std::forward<FnTys>(Fns)...);
((E = std::forward<FnTys>(Fns)(E)), ...);
}
return E;
}
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