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//===- DependencyScanningService.h - clang-scan-deps service ===-*- 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_TOOLING_DEPENDENCYSCANNING_DEPENDENCYSCANNINGSERVICE_H
#define LLVM_CLANG_TOOLING_DEPENDENCYSCANNING_DEPENDENCYSCANNINGSERVICE_H
#include "clang/Tooling/DependencyScanning/DependencyScanningFilesystem.h"
#include "llvm/ADT/BitmaskEnum.h"
namespace clang {
namespace tooling {
namespace dependencies {
/// The mode in which the dependency scanner will operate to find the
/// dependencies.
enum class ScanningMode {
/// This mode is used to compute the dependencies by running the preprocessor
/// over the source files.
CanonicalPreprocessing,
/// This mode is used to compute the dependencies by running the preprocessor
/// with special kind of lexing after scanning header and source files to get
/// the minimum necessary preprocessor directives for evaluating includes.
DependencyDirectivesScan,
};
/// The format that is output by the dependency scanner.
enum class ScanningOutputFormat {
/// This is the Makefile compatible dep format. This will include all of the
/// deps necessary for an implicit modules build, but won't include any
/// intermodule dependency information.
Make,
/// This outputs the full clang module dependency graph suitable for use for
/// explicitly building modules.
Full,
/// This outputs the dependency graph for standard c++ modules in P1689R5
/// format.
P1689,
};
#define DSS_LAST_BITMASK_ENUM(Id) \
LLVM_MARK_AS_BITMASK_ENUM(Id), All = llvm::NextPowerOf2(Id) - 1
enum class ScanningOptimizations {
None = 0,
/// Remove unused header search paths including header maps.
HeaderSearch = 1,
/// Remove warnings from system modules.
SystemWarnings = 2,
/// Remove unused -ivfsoverlay arguments.
VFS = 4,
/// Canonicalize -D and -U options.
Macros = 8,
DSS_LAST_BITMASK_ENUM(Macros),
Default = All
};
#undef DSS_LAST_BITMASK_ENUM
/// The dependency scanning service contains shared configuration and state that
/// is used by the individual dependency scanning workers.
class DependencyScanningService {
public:
DependencyScanningService(
ScanningMode Mode, ScanningOutputFormat Format,
ScanningOptimizations OptimizeArgs = ScanningOptimizations::Default,
bool EagerLoadModules = false);
ScanningMode getMode() const { return Mode; }
ScanningOutputFormat getFormat() const { return Format; }
ScanningOptimizations getOptimizeArgs() const { return OptimizeArgs; }
bool shouldEagerLoadModules() const { return EagerLoadModules; }
DependencyScanningFilesystemSharedCache &getSharedCache() {
return SharedCache;
}
private:
const ScanningMode Mode;
const ScanningOutputFormat Format;
/// Whether to optimize the modules' command-line arguments.
const ScanningOptimizations OptimizeArgs;
/// Whether to set up command-lines to load PCM files eagerly.
const bool EagerLoadModules;
/// The global file system cache.
DependencyScanningFilesystemSharedCache SharedCache;
};
} // end namespace dependencies
} // end namespace tooling
} // end namespace clang
#endif // LLVM_CLANG_TOOLING_DEPENDENCYSCANNING_DEPENDENCYSCANNINGSERVICE_H