| //===- TypeName.h -----------------------------------------------*- C++ -*-===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SUPPORT_TYPENAME_H |
| #define LLVM_SUPPORT_TYPENAME_H |
| |
| #include "llvm/ADT/StringRef.h" |
| |
| namespace llvm { |
| |
| /// We provide a function which tries to compute the (demangled) name of a type |
| /// statically. |
| /// |
| /// This routine may fail on some platforms or for particularly unusual types. |
| /// Do not use it for anything other than logging and debugging aids. It isn't |
| /// portable or dependendable in any real sense. |
| /// |
| /// The returned StringRef will point into a static storage duration string. |
| /// However, it may not be null terminated and may be some strangely aligned |
| /// inner substring of a larger string. |
| template <typename DesiredTypeName> |
| inline StringRef getTypeName() { |
| #if defined(__clang__) || defined(__GNUC__) |
| StringRef Name = __PRETTY_FUNCTION__; |
| |
| StringRef Key = "DesiredTypeName = "; |
| Name = Name.substr(Name.find(Key)); |
| assert(!Name.empty() && "Unable to find the template parameter!"); |
| Name = Name.drop_front(Key.size()); |
| |
| assert(Name.endswith("]") && "Name doesn't end in the substitution key!"); |
| return Name.drop_back(1); |
| #elif defined(_MSC_VER) |
| StringRef Name = __FUNCSIG__; |
| |
| StringRef Key = "getTypeName<"; |
| Name = Name.substr(Name.find(Key)); |
| assert(!Name.empty() && "Unable to find the function name!"); |
| Name = Name.drop_front(Key.size()); |
| |
| for (StringRef Prefix : {"class ", "struct ", "union ", "enum "}) |
| if (Name.startswith(Prefix)) { |
| Name = Name.drop_front(Prefix.size()); |
| break; |
| } |
| |
| auto AnglePos = Name.rfind('>'); |
| assert(AnglePos != StringRef::npos && "Unable to find the closing '>'!"); |
| return Name.substr(0, AnglePos); |
| #else |
| // No known technique for statically extracting a type name on this compiler. |
| // We return a string that is unlikely to look like any type in LLVM. |
| return "UNKNOWN_TYPE"; |
| #endif |
| } |
| |
| } |
| |
| #endif |