| //===- xray-registry.h - Define registry mechanism for commands. ----------===// | |
| // | |
| // 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. | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #ifndef TOOLS_LLVM_XRAY_XRAY_REGISTRY_H | |
| #define TOOLS_LLVM_XRAY_XRAY_REGISTRY_H | |
| #include "llvm/Support/CommandLine.h" | |
| #include "llvm/Support/Error.h" | |
| namespace llvm { | |
| namespace xray { | |
| // Use |CommandRegistration| as a global initialiser that registers a function | |
| // and associates it with |SC|. This requires that a command has not been | |
| // registered to a given |SC|. | |
| // | |
| // Usage: | |
| // | |
| // // At namespace scope. | |
| // static CommandRegistration Unused(&MySubCommand, [] { ... }); | |
| // | |
| struct CommandRegistration { | |
| CommandRegistration(cl::SubCommand *SC, std::function<Error()> Command); | |
| }; | |
| // Requires that |SC| is not null and has an associated function to it. | |
| std::function<Error()> dispatch(cl::SubCommand *SC); | |
| } // namespace xray | |
| } // namespace llvm | |
| #endif // TOOLS_LLVM_XRAY_XRAY_REGISTRY_H |