1 //===- Strings.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_STRINGS_H 10 #define LLD_STRINGS_H 11 12 #include "llvm/ADT/ArrayRef.h" 13 #include "llvm/ADT/Optional.h" 14 #include "llvm/ADT/StringRef.h" 15 #include "llvm/Support/GlobPattern.h" 16 #include <string> 17 #include <vector> 18 19 namespace lld { 20 // Returns a demangled C++ symbol name. If Name is not a mangled 21 // name, it returns name. 22 std::string demangleItanium(llvm::StringRef name); 23 24 std::vector<uint8_t> parseHex(llvm::StringRef s); 25 bool isValidCIdentifier(llvm::StringRef s); 26 27 // Write the contents of the a buffer to a file 28 void saveBuffer(llvm::StringRef buffer, const llvm::Twine &path); 29 30 // A single pattern to match against. A pattern can either be double-quoted 31 // text that should be matched exactly after removing the quoting marks or a 32 // glob pattern in the sense of GlobPattern. 33 class SingleStringMatcher { 34 public: 35 // Create a StringPattern from Pattern to be matched exactly irregardless 36 // of globbing characters if ExactMatch is true. 37 SingleStringMatcher(llvm::StringRef Pattern); 38 39 // Match s against this pattern, exactly if ExactMatch is true. 40 bool match(llvm::StringRef s) const; 41 42 private: 43 // Whether to do an exact match irregardless of the presence of wildcard 44 // character. 45 bool ExactMatch; 46 47 // GlobPattern object if not doing an exact match. 48 llvm::GlobPattern GlobPatternMatcher; 49 50 // StringRef to match exactly if doing an exact match. 51 llvm::StringRef ExactPattern; 52 }; 53 54 // This class represents multiple patterns to match against. A pattern can 55 // either be a double-quoted text that should be matched exactly after removing 56 // the quoted marks or a glob pattern. 57 class StringMatcher { 58 private: 59 // Patterns to match against. 60 std::vector<SingleStringMatcher> patterns; 61 62 public: 63 StringMatcher() = default; 64 65 // Matcher for a single pattern. 66 StringMatcher(llvm::StringRef Pattern) 67 : patterns({SingleStringMatcher(Pattern)}) {} 68 69 // Add a new pattern to the existing ones to match against. 70 void addPattern(SingleStringMatcher Matcher) { patterns.push_back(Matcher); } 71 72 bool empty() { return patterns.empty(); } 73 74 // Match s against the patterns. 75 bool match(llvm::StringRef s) const; 76 }; 77 78 } // namespace lld 79 80 #endif 81