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//===-- "main" function of libc-hdrgen ------------------------------------===//
//
// 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 "Generator.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/TableGen/Main.h"
#include <string>
#include <unordered_map>
namespace {
llvm::cl::opt<std::string>
HeaderDefFile("def", llvm::cl::desc("Path to the .h.def file."),
llvm::cl::value_desc("<filename>"), llvm::cl::Required);
llvm::cl::opt<std::string> StandardHeader(
"header",
llvm::cl::desc("The standard header file which is to be generated."),
llvm::cl::value_desc("<header file>"));
llvm::cl::list<std::string> EntrypointNamesOption(
"e", llvm::cl::value_desc("<list of entrypoints>"),
llvm::cl::desc(
"Each --e is one entrypoint (generated from entrypoints.txt)"),
llvm::cl::OneOrMore);
llvm::cl::list<std::string> ReplacementValues(
"args", llvm::cl::desc("Command separated <argument name>=<value> pairs."),
llvm::cl::value_desc("<name=value>[,name=value]"));
llvm::cl::opt<bool> ExportDecls(
"export-decls",
llvm::cl::desc("Output a new header containing only the entrypoints."));
void ParseArgValuePairs(std::unordered_map<std::string, std::string> &Map) {
for (std::string &R : ReplacementValues) {
auto Pair = llvm::StringRef(R).split('=');
Map[std::string(Pair.first)] = std::string(Pair.second);
}
}
} // anonymous namespace
namespace llvm_libc {
bool HeaderGeneratorMain(llvm::raw_ostream &OS, llvm::RecordKeeper &Records) {
std::unordered_map<std::string, std::string> ArgMap;
ParseArgValuePairs(ArgMap);
Generator G(HeaderDefFile, EntrypointNamesOption, StandardHeader, ArgMap);
if (ExportDecls)
G.generateDecls(OS, Records);
else
G.generate(OS, Records);
return false;
}
} // namespace llvm_libc
int main(int argc, char *argv[]) {
llvm::cl::ParseCommandLineOptions(argc, argv);
return TableGenMain(argv[0], &llvm_libc::HeaderGeneratorMain);
}
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