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//===-- ClangDocMain.cpp - ClangDoc -----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tool for generating C and C++ documenation from source code
// and comments. Generally, it runs a LibTooling FrontendAction on source files,
// mapping each declaration in those files to its USR and serializing relevant
// information into LLVM bitcode. It then runs a pass over the collected
// declaration information, reducing by USR. There is an option to dump this
// intermediate result to bitcode. Finally, it hands the reduced information
// off to a generator, which does the final parsing from the intermediate
// representation to the desired output format.
//
//===----------------------------------------------------------------------===//
#include "ClangDoc.h"
#include "clang/AST/AST.h"
#include "clang/AST/Decl.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchersInternal.h"
#include "clang/Driver/Options.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Execution.h"
#include "clang/Tooling/StandaloneExecution.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
#include <string>
using namespace clang::ast_matchers;
using namespace clang::tooling;
using namespace clang;
static llvm::cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);
static llvm::cl::OptionCategory ClangDocCategory("clang-doc options");
static llvm::cl::opt<std::string>
OutDirectory("output",
llvm::cl::desc("Directory for outputting generated files."),
llvm::cl::init("docs"), llvm::cl::cat(ClangDocCategory));
static llvm::cl::opt<bool>
DumpMapperResult("dump-mapper",
llvm::cl::desc("Dump mapper results to bitcode file."),
llvm::cl::init(false), llvm::cl::cat(ClangDocCategory));
static llvm::cl::opt<bool> DoxygenOnly(
"doxygen",
llvm::cl::desc("Use only doxygen-style comments to generate docs."),
llvm::cl::init(false), llvm::cl::cat(ClangDocCategory));
int main(int argc, const char **argv) {
llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
std::error_code OK;
auto Exec = clang::tooling::createExecutorFromCommandLineArgs(
argc, argv, ClangDocCategory);
if (!Exec) {
llvm::errs() << toString(Exec.takeError()) << "\n";
return 1;
}
ArgumentsAdjuster ArgAdjuster;
if (!DoxygenOnly)
ArgAdjuster = combineAdjusters(
getInsertArgumentAdjuster("-fparse-all-comments",
tooling::ArgumentInsertPosition::END),
ArgAdjuster);
// Mapping phase
llvm::outs() << "Mapping decls...\n";
auto Err = Exec->get()->execute(doc::newMapperActionFactory(
Exec->get()->getExecutionContext()),
ArgAdjuster);
if (Err)
llvm::errs() << toString(std::move(Err)) << "\n";
if (DumpMapperResult) {
Exec->get()->getToolResults()->forEachResult([&](StringRef Key,
StringRef Value) {
SmallString<128> IRRootPath;
llvm::sys::path::native(OutDirectory, IRRootPath);
llvm::sys::path::append(IRRootPath, "bc");
std::error_code DirectoryStatus =
llvm::sys::fs::create_directories(IRRootPath);
if (DirectoryStatus != OK) {
llvm::errs() << "Unable to create documentation directories.\n";
return;
}
llvm::sys::path::append(IRRootPath, Key + ".bc");
std::error_code OutErrorInfo;
llvm::raw_fd_ostream OS(IRRootPath, OutErrorInfo, llvm::sys::fs::F_None);
if (OutErrorInfo != OK) {
llvm::errs() << "Error opening documentation file.\n";
return;
}
OS << Value;
OS.close();
});
}
return 0;
}
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