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//===-- options.cpp -------------------------------------------------------===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the Boost Software License. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
#include "options.h"
#include "callback_ostream.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/CommandLine.h"
bool parseOptions(Slice<Slice<const char>> args,
void (*errs)(void *, const char *, size_t),
void *errsContext) {
llvm::SmallVector<std::string, 32 - 1> tempStrs;
tempStrs.reserve(args.len);
llvm::SmallVector<const char *, 32> tempOpts;
tempOpts.reserve(args.len + 1);
tempOpts.push_back("jit"); // dummy app name
for (size_t i = 0; i < args.len; ++i) {
auto &arg = args.data[i];
tempStrs.push_back(std::string(arg.data, arg.len));
tempOpts.push_back(tempStrs.back().c_str());
}
auto callback = [&](const char *str, size_t len) {
if (errs != nullptr) {
errs(errsContext, str, len);
}
};
CallbackOstream os(callback);
// There is no Option::setDefault() before llvm 60
llvm::cl::ResetAllOptionOccurrences();
for (auto &i : llvm::cl::getRegisteredOptions()) {
i.second->setDefault();
}
auto res = llvm::cl::ParseCommandLineOptions(
static_cast<int>(tempOpts.size()), tempOpts.data(), "", &os);
os.flush();
return res;
}
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