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//===- CIndexer.h - Clang-C Source Indexing Library -------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file defines CIndexer, a subclass of Indexer that provides extra
// functionality needed by the CIndex library.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_LIBCLANG_CINDEXER_H
#define LLVM_CLANG_TOOLS_LIBCLANG_CINDEXER_H
#include "clang-c/Index.h"
#include "clang/Frontend/PCHContainerOperations.h"
#include "llvm/ADT/STLExtras.h"
#include <utility>
namespace llvm {
class CrashRecoveryContext;
}
namespace clang {
class ASTUnit;
class MacroInfo;
class MacroDefinitionRecord;
class SourceLocation;
class Token;
class IdentifierInfo;
class CIndexer {
bool OnlyLocalDecls;
bool DisplayDiagnostics;
unsigned Options; // CXGlobalOptFlags.
std::string ResourcesPath;
std::shared_ptr<PCHContainerOperations> PCHContainerOps;
std::string ToolchainPath;
std::string InvocationEmissionPath;
public:
CIndexer(std::shared_ptr<PCHContainerOperations> PCHContainerOps =
std::make_shared<PCHContainerOperations>())
: OnlyLocalDecls(false), DisplayDiagnostics(false),
Options(CXGlobalOpt_None), PCHContainerOps(std::move(PCHContainerOps)) {
}
/// Whether we only want to see "local" declarations (that did not
/// come from a previous precompiled header). If false, we want to see all
/// declarations.
bool getOnlyLocalDecls() const { return OnlyLocalDecls; }
void setOnlyLocalDecls(bool Local = true) { OnlyLocalDecls = Local; }
bool getDisplayDiagnostics() const { return DisplayDiagnostics; }
void setDisplayDiagnostics(bool Display = true) {
DisplayDiagnostics = Display;
}
std::shared_ptr<PCHContainerOperations> getPCHContainerOperations() const {
return PCHContainerOps;
}
unsigned getCXGlobalOptFlags() const { return Options; }
void setCXGlobalOptFlags(unsigned options) { Options = options; }
bool isOptEnabled(CXGlobalOptFlags opt) const {
return Options & opt;
}
/// Get the path of the clang resource files.
const std::string &getClangResourcesPath();
StringRef getClangToolchainPath();
void setInvocationEmissionPath(StringRef Str) {
InvocationEmissionPath = std::string(Str);
}
StringRef getInvocationEmissionPath() const { return InvocationEmissionPath; }
};
/// Logs information about a particular libclang operation like parsing to
/// a new file in the invocation emission path.
class LibclangInvocationReporter {
public:
enum class OperationKind { ParseOperation, CompletionOperation };
LibclangInvocationReporter(CIndexer &Idx, OperationKind Op,
unsigned ParseOptions,
llvm::ArrayRef<const char *> Args,
llvm::ArrayRef<std::string> InvocationArgs,
llvm::ArrayRef<CXUnsavedFile> UnsavedFiles);
~LibclangInvocationReporter();
private:
std::string File;
};
/// Return the current size to request for "safety".
unsigned GetSafetyThreadStackSize();
/// Set the current size to request for "safety" (or 0, if safety
/// threads should not be used).
void SetSafetyThreadStackSize(unsigned Value);
/// Execution the given code "safely", using crash recovery or safety
/// threads when possible.
///
/// \return False if a crash was detected.
bool RunSafely(llvm::CrashRecoveryContext &CRC, llvm::function_ref<void()> Fn,
unsigned Size = 0);
/// Set the thread priority to background.
/// FIXME: Move to llvm/Support.
void setThreadBackgroundPriority();
/// Print libclang's resource usage to standard error.
void PrintLibclangResourceUsage(CXTranslationUnit TU);
namespace cxindex {
void printDiagsToStderr(ASTUnit *Unit);
/// If \c MacroDefLoc points at a macro definition with \c II as
/// its name, this retrieves its MacroInfo.
MacroInfo *getMacroInfo(const IdentifierInfo &II,
SourceLocation MacroDefLoc, CXTranslationUnit TU);
/// Retrieves the corresponding MacroInfo of a MacroDefinitionRecord.
const MacroInfo *getMacroInfo(const MacroDefinitionRecord *MacroDef,
CXTranslationUnit TU);
/// If \c Loc resides inside the definition of \c MI and it points at
/// an identifier that has ever been a macro name, this returns the latest
/// MacroDefinitionRecord for that name, otherwise it returns NULL.
MacroDefinitionRecord *checkForMacroInMacroDefinition(const MacroInfo *MI,
SourceLocation Loc,
CXTranslationUnit TU);
/// If \c Tok resides inside the definition of \c MI and it points at
/// an identifier that has ever been a macro name, this returns the latest
/// MacroDefinitionRecord for that name, otherwise it returns NULL.
MacroDefinitionRecord *checkForMacroInMacroDefinition(const MacroInfo *MI,
const Token &Tok,
CXTranslationUnit TU);
}
}
#endif
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