50127ac054
This patch enhances Clang's diagnosis for unknown attributes by
providing typo correction suggestions for known attributes.
```cpp
[[gmu::deprected]] // expected-warning {{unknown attribute 'gmu::deprected' ignored; did you mean 'gnu::deprecated'?}}
int f1(void) {
return 0;
}
[[deprected]] // expected-warning {{unknown attribute 'deprected' ignored; did you mean 'deprecated'?}}
int f2(void) {
return 0;
}
```
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
//===- SimpleTypoCorrection.cpp - Basic typo correction utility -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the SimpleTypoCorrection class, which performs basic
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// typo correction using string similarity based on edit distance.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/SimpleTypoCorrection.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/StringRef.h"
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using namespace clang;
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void SimpleTypoCorrection::add(const StringRef Candidate) {
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if (Candidate.empty())
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return;
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unsigned MinPossibleEditDistance =
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abs(static_cast<int>(Candidate.size()) - static_cast<int>(Typo.size()));
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if (MinPossibleEditDistance > 0 && Typo.size() / MinPossibleEditDistance < 3)
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return;
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unsigned EditDistance = Typo.edit_distance(
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Candidate, /*AllowReplacements*/ true, MaxEditDistance);
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if (EditDistance < BestEditDistance) {
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BestCandidate = Candidate;
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BestEditDistance = EditDistance;
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BestIndex = NextIndex;
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}
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++NextIndex;
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}
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void SimpleTypoCorrection::add(const char *Candidate) {
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if (Candidate)
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add(StringRef(Candidate));
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}
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void SimpleTypoCorrection::add(const IdentifierInfo *Candidate) {
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if (Candidate)
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add(Candidate->getName());
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}
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unsigned SimpleTypoCorrection::getCorrectionIndex() const { return BestIndex; }
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std::optional<StringRef> SimpleTypoCorrection::getCorrection() const {
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if (hasCorrection())
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return BestCandidate;
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return std::nullopt;
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}
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bool SimpleTypoCorrection::hasCorrection() const {
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return BestEditDistance <= MaxEditDistance;
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}
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