| //===- xray-registry.h - Define registry mechanism for commands. ----------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
