1//===-- ELFAttributes.cpp - ELF Attributes --------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/Support/ELFAttributes.h"
10#include "llvm/ADT/StringRef.h"
11
12using namespace llvm;
13
14StringRef ELFAttrs::attrTypeAsString(unsigned attr, TagNameMap tagNameMap,
15                                     bool hasTagPrefix) {
16  auto tagNameIt = find_if(
17      tagNameMap, [attr](const TagNameItem item) { return item.attr == attr; });
18  if (tagNameIt == tagNameMap.end())
19    return "";
20  StringRef tagName = tagNameIt->tagName;
21  return hasTagPrefix ? tagName : tagName.drop_front(4);
22}
23
24std::optional<unsigned> ELFAttrs::attrTypeFromString(StringRef tag,
25                                                     TagNameMap tagNameMap) {
26  bool hasTagPrefix = tag.starts_with("Tag_");
27  auto tagNameIt =
28      find_if(tagNameMap, [tag, hasTagPrefix](const TagNameItem item) {
29        return item.tagName.drop_front(hasTagPrefix ? 0 : 4) == tag;
30      });
31  if (tagNameIt == tagNameMap.end())
32    return std::nullopt;
33  return tagNameIt->attr;
34}
35