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//===-- IncludeFixer.h - Include inserter -----------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_INCLUDEFIXER_H
#define LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_INCLUDEFIXER_H
#include "IncludeFixerContext.h"
#include "SymbolIndexManager.h"
#include "clang/Format/Format.h"
#include "clang/Sema/ExternalSemaSource.h"
#include "clang/Tooling/Core/Replacement.h"
#include "clang/Tooling/Tooling.h"
#include <memory>
#include <vector>
namespace clang {
class CompilerInvocation;
class DiagnosticConsumer;
class FileManager;
class PCHContainerOperations;
namespace include_fixer {
class IncludeFixerActionFactory : public clang::tooling::ToolAction {
public:
/// \param SymbolIndexMgr A source for matching symbols to header files.
/// \param Contexts The contexts for the symbols being queried.
/// \param StyleName Fallback style for reformatting.
/// \param MinimizeIncludePaths whether inserted include paths are optimized.
IncludeFixerActionFactory(SymbolIndexManager &SymbolIndexMgr,
std::vector<IncludeFixerContext> &Contexts,
StringRef StyleName,
bool MinimizeIncludePaths = true);
~IncludeFixerActionFactory() override;
bool
runInvocation(std::shared_ptr<clang::CompilerInvocation> Invocation,
clang::FileManager *Files,
std::shared_ptr<clang::PCHContainerOperations> PCHContainerOps,
clang::DiagnosticConsumer *Diagnostics) override;
private:
/// The client to use to find cross-references.
SymbolIndexManager &SymbolIndexMgr;
/// Multiple contexts for files being processed.
std::vector<IncludeFixerContext> &Contexts;
/// Whether inserted include paths should be optimized.
bool MinimizeIncludePaths;
/// The fallback format style for formatting after insertion if no
/// clang-format config file was found.
std::string FallbackStyle;
};
/// Create replacements, which are generated by clang-format, for the
/// missing header and mising qualifiers insertions. The function uses the
/// first header for insertion.
///
/// \param Code The source code.
/// \param Context The context which contains all information for creating
/// include-fixer replacements.
/// \param Style clang-format style being used.
/// \param AddQualifiers Whether we should add qualifiers to all instances of
/// an unidentified symbol.
///
/// \return Formatted replacements for inserting, sorting headers and adding
/// qualifiers on success; otherwise, an llvm::Error carrying llvm::StringError
/// is returned.
llvm::Expected<tooling::Replacements> createIncludeFixerReplacements(
StringRef Code, const IncludeFixerContext &Context,
const format::FormatStyle &Style = format::getLLVMStyle(),
bool AddQualifiers = true);
/// Handles callbacks from sema, does the include lookup and turns it into an
/// IncludeFixerContext.
class IncludeFixerSemaSource : public clang::ExternalSemaSource {
public:
explicit IncludeFixerSemaSource(SymbolIndexManager &SymbolIndexMgr,
bool MinimizeIncludePaths,
bool GenerateDiagnostics)
: SymbolIndexMgr(SymbolIndexMgr),
MinimizeIncludePaths(MinimizeIncludePaths),
GenerateDiagnostics(GenerateDiagnostics) {}
void setCompilerInstance(CompilerInstance *CI) { this->CI = CI; }
void setFilePath(StringRef FilePath) { this->FilePath = FilePath; }
/// Callback for incomplete types. If we encounter a forward declaration we
/// have the fully qualified name ready. Just query that.
bool MaybeDiagnoseMissingCompleteType(clang::SourceLocation Loc,
clang::QualType T) override;
/// Callback for unknown identifiers. Try to piece together as much
/// qualification as we can get and do a query.
clang::TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo,
int LookupKind, Scope *S, CXXScopeSpec *SS,
CorrectionCandidateCallback &CCC,
DeclContext *MemberContext,
bool EnteringContext,
const ObjCObjectPointerType *OPT) override;
/// Get the minimal include for a given path.
std::string minimizeInclude(StringRef Include,
const clang::SourceManager &SourceManager,
clang::HeaderSearch &HeaderSearch) const;
/// Get the include fixer context for the queried symbol.
IncludeFixerContext getIncludeFixerContext(
const clang::SourceManager &SourceManager,
clang::HeaderSearch &HeaderSearch,
ArrayRef<find_all_symbols::SymbolInfo> MatchedSymbols) const;
/// Get the global matched symbols.
ArrayRef<find_all_symbols::SymbolInfo> getMatchedSymbols() const {
return MatchedSymbols;
}
private:
/// Query the database for a given identifier.
std::vector<find_all_symbols::SymbolInfo>
query(StringRef Query, StringRef ScopedQualifiers, tooling::Range Range);
CompilerInstance *CI;
/// The client to use to find cross-references.
SymbolIndexManager &SymbolIndexMgr;
/// The information of the symbols being queried.
std::vector<IncludeFixerContext::QuerySymbolInfo> QuerySymbolInfos;
/// All symbol candidates which match QuerySymbol. We only include the first
/// discovered identifier to avoid getting caught in results from error
/// recovery.
std::vector<find_all_symbols::SymbolInfo> MatchedSymbols;
/// The file path to the file being processed.
std::string FilePath;
/// Whether we should use the smallest possible include path.
bool MinimizeIncludePaths = true;
/// Whether we should generate diagnostics with fixits for missing symbols.
bool GenerateDiagnostics = false;
};
} // namespace include_fixer
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_INCLUDE_FIXER_INCLUDEFIXER_H
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