41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===- 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
|