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//===-- COFFDirectiveParser.cpp - JITLink coff directive parser --*- C++ -*===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// MSVC COFF directive parser
//
//===----------------------------------------------------------------------===//
#include "COFFDirectiveParser.h"
#include <array>
using namespace llvm;
using namespace jitlink;
#define DEBUG_TYPE "jitlink"
// Create prefix string literals used in Options.td
#define PREFIX(NAME, VALUE) \
static constexpr StringLiteral NAME##_init[] = VALUE; \
static constexpr ArrayRef<StringLiteral> NAME(NAME##_init, \
std::size(NAME##_init) - 1);
#include "COFFOptions.inc"
#undef PREFIX
static constexpr const StringLiteral PrefixTable_init[] =
#define PREFIX_UNION(VALUES) VALUES
#include "COFFOptions.inc"
#undef PREFIX_UNION
;
static constexpr const ArrayRef<StringLiteral>
PrefixTable(PrefixTable_init, std::size(PrefixTable_init) - 1);
// Create table mapping all options defined in COFFOptions.td
static constexpr opt::OptTable::Info infoTable[] = {
#define OPTION(X1, X2, ID, KIND, GROUP, ALIAS, X7, X8, X9, X10, X11, X12) \
{X1, \
X2, \
X10, \
X11, \
COFF_OPT_##ID, \
opt::Option::KIND##Class, \
X9, \
X8, \
COFF_OPT_##GROUP, \
COFF_OPT_##ALIAS, \
X7, \
X12},
#include "COFFOptions.inc"
#undef OPTION
};
class COFFOptTable : public opt::PrecomputedOptTable {
public:
COFFOptTable() : PrecomputedOptTable(infoTable, PrefixTable, true) {}
};
static COFFOptTable optTable;
Expected<opt::InputArgList> COFFDirectiveParser::parse(StringRef Str) {
SmallVector<StringRef, 16> Tokens;
SmallVector<const char *, 16> Buffer;
cl::TokenizeWindowsCommandLineNoCopy(Str, saver, Tokens);
for (StringRef Tok : Tokens) {
bool HasNul = Tok.end() != Str.end() && Tok.data()[Tok.size()] == '\0';
Buffer.push_back(HasNul ? Tok.data() : saver.save(Tok).data());
}
unsigned missingIndex;
unsigned missingCount;
auto Result = optTable.ParseArgs(Buffer, missingIndex, missingCount);
if (missingCount)
return make_error<JITLinkError>(Twine("COFF directive parsing failed: ") +
Result.getArgString(missingIndex) +
" missing argument");
LLVM_DEBUG({
for (auto *arg : Result.filtered(COFF_OPT_UNKNOWN))
dbgs() << "Unknown coff option argument: " << arg->getAsString(Result)
<< "\n";
});
return std::move(Result);
}
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