//===-- ELFAttributes.cpp - ELF Attributes --------------------------------===//

//

// 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/Support/ELFAttributes.h"

#include "llvm/ADT/StringRef.h"

using namespace llvm;

StringRef ELFAttrs::attrTypeAsString(unsigned attr, TagNameMap tagNameMap,

                                     bool hasTagPrefix) {

  auto tagNameIt = find_if(

      tagNameMap, [attr](const TagNameItem item) { return item.attr == attr; });

  if (tagNameIt == tagNameMap.end())

    return "";

  StringRef tagName = tagNameIt->tagName;

  return hasTagPrefix ? tagName : tagName.drop_front(4);

}

std::optional<unsigned> ELFAttrs::attrTypeFromString(StringRef tag,

                                                     TagNameMap tagNameMap) {

  bool hasTagPrefix = tag.starts_with("Tag_");

  auto tagNameIt =

      find_if(tagNameMap, [tag, hasTagPrefix](const TagNameItem item) {

        return item.tagName.drop_front(hasTagPrefix ? 0 : 4) == tag;

      });

  if (tagNameIt == tagNameMap.end())

    return std::nullopt;

  return tagNameIt->attr;

}