| //===- xray-registry.cpp: Implement a command registry. -------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implement a simple subcommand registry. |
| // |
| //===----------------------------------------------------------------------===// |
| #include "xray-registry.h" |
| |
| #include "llvm/Support/ManagedStatic.h" |
| #include <unordered_map> |
| |
| namespace llvm { |
| namespace xray { |
| |
| using HandlerType = std::function<Error()>; |
| |
| ManagedStatic<std::unordered_map<cl::SubCommand *, HandlerType>> Commands; |
| |
| CommandRegistration::CommandRegistration(cl::SubCommand *SC, |
| HandlerType Command) { |
| assert(Commands->count(SC) == 0 && |
| "Attempting to overwrite a command handler"); |
| assert(Command && "Attempting to register an empty std::function<Error()>"); |
| (*Commands)[SC] = Command; |
| } |
| |
| HandlerType dispatch(cl::SubCommand *SC) { |
| auto It = Commands->find(SC); |
| assert(It != Commands->end() && |
| "Attempting to dispatch on un-registered SubCommand."); |
| return It->second; |
| } |
| |
| } // namespace xray |
| } // namespace llvm |
