2016-10-26 12:14:34 +08:00
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//===- xray-registry.h - Define registry mechanism for commands. ----------===//
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//
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2019-01-19 16:50:56 +08:00
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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2016-10-26 12:14:34 +08:00
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//
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//===----------------------------------------------------------------------===//
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//
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// Implement a simple subcommand registry.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TOOLS_LLVM_XRAY_XRAY_REGISTRY_H
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#define TOOLS_LLVM_XRAY_XRAY_REGISTRY_H
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Error.h"
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namespace llvm {
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namespace xray {
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// Use |CommandRegistration| as a global initialiser that registers a function
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// and associates it with |SC|. This requires that a command has not been
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// registered to a given |SC|.
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//
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// Usage:
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//
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// // At namespace scope.
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// static CommandRegistration Unused(&MySubCommand, [] { ... });
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//
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struct CommandRegistration {
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CommandRegistration(cl::SubCommand *SC, std::function<Error()> Command);
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};
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// Requires that |SC| is not null and has an associated function to it.
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std::function<Error()> dispatch(cl::SubCommand *SC);
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} // namespace xray
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} // namespace llvm
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#endif // TOOLS_LLVM_XRAY_XRAY_REGISTRY_H
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