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//===-- llvm-driver.cpp ---------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/WithColor.h"
using namespace llvm;
#define LLVM_DRIVER_TOOL(tool, entry) int entry##_main(int argc, char **argv);
#include "LLVMDriverTools.def"
constexpr char subcommands[] =
#define LLVM_DRIVER_TOOL(tool, entry) " " tool "\n"
#include "LLVMDriverTools.def"
;
static void printHelpMessage() {
llvm::outs() << "OVERVIEW: llvm toolchain driver\n\n"
<< "USAGE: llvm [subcommand] [options]\n\n"
<< "SUBCOMMANDS:\n\n"
<< subcommands
<< "\n Type \"llvm <subcommand> --help\" to get more help on a "
"specific subcommand\n\n"
<< "OPTIONS:\n\n --help - Display this message";
}
static int findTool(int Argc, char **Argv) {
if (!Argc) {
printHelpMessage();
return 1;
}
StringRef ToolName = Argv[0];
if (ToolName == "--help") {
printHelpMessage();
return 0;
}
StringRef Stem = sys::path::stem(ToolName);
auto Is = [=](StringRef Tool) {
auto I = Stem.rfind_insensitive(Tool);
return I != StringRef::npos && (I + Tool.size() == Stem.size() ||
!llvm::isAlnum(Stem[I + Tool.size()]));
};
#define LLVM_DRIVER_TOOL(tool, entry) \
if (Is(tool)) \
return entry##_main(Argc, Argv);
#include "LLVMDriverTools.def"
if (Is("llvm"))
return findTool(Argc - 1, Argv + 1);
printHelpMessage();
return 1;
}
extern bool IsLLVMDriver;
int main(int Argc, char **Argv) {
IsLLVMDriver = true;
return findTool(Argc, Argv);
}
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