1 //===- ExportTrie.h ---------------------------------------------*- C++ -*-===// 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 #ifndef LLD_MACHO_EXPORT_TRIE_H 10 #define LLD_MACHO_EXPORT_TRIE_H 11 12 #include "llvm/ADT/ArrayRef.h" 13 #include "llvm/ADT/STLExtras.h" 14 15 #include <vector> 16 17 namespace lld { 18 namespace macho { 19 20 struct TrieNode; 21 class Symbol; 22 23 class TrieBuilder { 24 public: 25 ~TrieBuilder(); 26 void setImageBase(uint64_t addr) { imageBase = addr; } 27 void addSymbol(const Symbol &sym) { exported.push_back(&sym); } 28 // Returns the size in bytes of the serialized trie. 29 size_t build(); 30 void writeTo(uint8_t *buf) const; 31 32 private: 33 TrieNode *makeNode(); 34 void sortAndBuild(llvm::MutableArrayRef<const Symbol *> vec, TrieNode *node, 35 size_t lastPos, size_t pos); 36 37 uint64_t imageBase = 0; 38 std::vector<const Symbol *> exported; 39 std::vector<TrieNode *> nodes; 40 }; 41 42 using TrieEntryCallback = 43 llvm::function_ref<void(const llvm::Twine & /*name*/, uint64_t /*flags*/)>; 44 45 void parseTrie(const uint8_t *buf, size_t size, const TrieEntryCallback &); 46 47 } // namespace macho 48 } // namespace lld 49 50 #endif 51