llvm/clang/lib/Frontend/DependencyGraph.cpp

//===--- DependencyGraph.cpp - Generate dependency file -------------------===//
//
// 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 code generates a header dependency graph in DOT format, for use
// with, e.g., GraphViz.
//
//===----------------------------------------------------------------------===//

#include "clang/Frontend/Utils.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Lex/PPCallbacks.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/raw_ostream.h"

usingnamespaceclang;
DOT;

namespace {
class DependencyGraphCallback : public PPCallbacks { … };
}

void clang::AttachDependencyGraphGen(Preprocessor &PP, StringRef OutputFile,
                                     StringRef SysRoot) { … }

void DependencyGraphCallback::InclusionDirective(
    SourceLocation HashLoc, const Token &IncludeTok, StringRef FileName,
    bool IsAngled, CharSourceRange FilenameRange, OptionalFileEntryRef File,
    StringRef SearchPath, StringRef RelativePath, const Module *SuggestedModule,
    bool ModuleImported, SrcMgr::CharacteristicKind FileType) { … }

void DependencyGraphCallback::EmbedDirective(SourceLocation HashLoc, StringRef,
                                             bool, OptionalFileEntryRef File,
                                             const LexEmbedParametersResult &) { … }

raw_ostream &
DependencyGraphCallback::writeNodeReference(raw_ostream &OS,
                                            const FileEntry *Node) { … }

void DependencyGraphCallback::OutputGraphFile() { … }