llvm-project/clang/lib/Format/QualifierAlignmentFixer.h
mydeveloperday 031d3ece3f [clang-format] Fix a crash (assertion) in qualifier alignment when matching template closer is null
https://github.com/llvm/llvm-project/issues/53008

```
template <class Id> using A = quantity /**/<kind<Id>, 1>;
```

the presence of the comment between identifier and template opener seems to be causing the qualifier alignment to fail

Reviewed By: curdeius

Fixes: #53008

Differential Revision: https://reviews.llvm.org/D116726
2022-01-06 19:40:39 +00:00

101 lines
3.8 KiB
C++

//===--- LeftRightQualifierAlignmentFixer.h ------------------------------*- C++
//-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file declares LeftRightQualifierAlignmentFixer, a TokenAnalyzer that
/// enforces either east or west const depending on the style.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_FORMAT_QUALIFIERALIGNMENTFIXER_H
#define LLVM_CLANG_LIB_FORMAT_QUALIFIERALIGNMENTFIXER_H
#include "TokenAnalyzer.h"
namespace clang {
namespace format {
typedef std::function<std::pair<tooling::Replacements, unsigned>(
const Environment &)>
AnalyzerPass;
class QualifierAlignmentFixer : public TokenAnalyzer {
// Left to Right ordering requires multiple passes
SmallVector<AnalyzerPass, 8> Passes;
StringRef &Code;
ArrayRef<tooling::Range> Ranges;
unsigned FirstStartColumn;
unsigned NextStartColumn;
unsigned LastStartColumn;
StringRef FileName;
public:
QualifierAlignmentFixer(const Environment &Env, const FormatStyle &Style,
StringRef &Code, ArrayRef<tooling::Range> Ranges,
unsigned FirstStartColumn, unsigned NextStartColumn,
unsigned LastStartColumn, StringRef FileName);
std::pair<tooling::Replacements, unsigned>
analyze(TokenAnnotator &Annotator,
SmallVectorImpl<AnnotatedLine *> &AnnotatedLines,
FormatTokenLexer &Tokens) override;
static void PrepareLeftRightOrdering(const std::vector<std::string> &Order,
std::vector<std::string> &LeftOrder,
std::vector<std::string> &RightOrder,
std::vector<tok::TokenKind> &Qualifiers);
};
class LeftRightQualifierAlignmentFixer : public TokenAnalyzer {
std::string Qualifier;
bool RightAlign;
SmallVector<tok::TokenKind, 8> QualifierTokens;
std::vector<tok::TokenKind> ConfiguredQualifierTokens;
public:
LeftRightQualifierAlignmentFixer(
const Environment &Env, const FormatStyle &Style,
const std::string &Qualifier,
const std::vector<tok::TokenKind> &ConfiguredQualifierTokens,
bool RightAlign);
std::pair<tooling::Replacements, unsigned>
analyze(TokenAnnotator &Annotator,
SmallVectorImpl<AnnotatedLine *> &AnnotatedLines,
FormatTokenLexer &Tokens) override;
static tok::TokenKind getTokenFromQualifier(const std::string &Qualifier);
const FormatToken *analyzeRight(const SourceManager &SourceMgr,
const AdditionalKeywords &Keywords,
tooling::Replacements &Fixes,
const FormatToken *Tok,
const std::string &Qualifier,
tok::TokenKind QualifierType);
const FormatToken *analyzeLeft(const SourceManager &SourceMgr,
const AdditionalKeywords &Keywords,
tooling::Replacements &Fixes,
const FormatToken *Tok,
const std::string &Qualifier,
tok::TokenKind QualifierType);
// is the Token a simple or qualifier type
static bool isQualifierOrType(const FormatToken *Tok,
const std::vector<tok::TokenKind> &Qualifiers);
// is the Token likely a Macro
static bool isPossibleMacro(const FormatToken *Tok);
};
} // end namespace format
} // end namespace clang
#endif