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 void setImageBase(uint64_t addr) { imageBase = addr; } 26 void addSymbol(const Symbol &sym) { exported.push_back(&sym); } 27 // Returns the size in bytes of the serialized trie. 28 size_t build(); 29 void writeTo(uint8_t *buf) const; 30 31 private: 32 TrieNode *makeNode(); 33 void sortAndBuild(llvm::MutableArrayRef<const Symbol *> vec, TrieNode *node, 34 size_t lastPos, size_t pos); 35 36 uint64_t imageBase = 0; 37 std::vector<const Symbol *> exported; 38 std::vector<TrieNode *> nodes; 39 }; 40 41 using TrieEntryCallback = 42 llvm::function_ref<void(const llvm::Twine & /*name*/, uint64_t /*flags*/)>; 43 44 void parseTrie(const uint8_t *buf, size_t size, const TrieEntryCallback &); 45 46 } // namespace macho 47 } // namespace lld 48 49 #endif 50