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ef8825bfe6
LLVM has removed llvm::Optional, move over to std::optional. Also clang-format to fix up all the renamed #includes.
68 lines
2.7 KiB
C++
68 lines
2.7 KiB
C++
//===--- Program.h ----------------------------------------------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_BASIC_PROGRAM_H
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#define SWIFT_BASIC_PROGRAM_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/ErrorOr.h"
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#include "llvm/Support/Program.h"
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#include <optional>
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namespace swift {
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/// This function executes the program using the arguments provided,
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/// preferring to reexecute the current process, if supported.
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///
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/// \param Program Path of the program to be executed
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/// \param args A vector of strings that are passed to the program. The first
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/// element should be the name of the program. The list *must* be terminated by
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/// a null char * entry.
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/// \param env An optional vector of strings to use for the program's
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/// environment. If not provided, the current program's environment will be
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/// used.
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///
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/// \returns Typically, this function will not return, as the current process
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/// will no longer exist, or it will call exit() if the program was successfully
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/// executed. In the event of an error, this function will return a negative
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/// value indicating a failure to execute.
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int ExecuteInPlace(const char *Program, const char **args,
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const char **env = nullptr);
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struct ChildProcessInfo {
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llvm::sys::ProcessInfo ProcessInfo;
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int Write;
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int Read;
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ChildProcessInfo(llvm::sys::ProcessInfo ProcessInfo, int Write, int Read)
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: ProcessInfo(ProcessInfo), Write(Write), Read(Read) {}
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};
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/// This function executes the program using the argument provided.
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/// Establish pipes between the current process and the spawned process.
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/// Returned a \c ChildProcessInfo where WriteFileDescriptor is piped to
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/// child's STDIN, and ReadFileDescriptor is piped from child's STDOUT.
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///
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/// \param program Path of the program to be executed
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/// \param args An array of strings that are passed to the program. The first
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/// element should be the name of the program.
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/// \param env An optional array of 'key=value 'strings to use for the program's
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/// environment.
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llvm::ErrorOr<swift::ChildProcessInfo> ExecuteWithPipe(
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llvm::StringRef program, llvm::ArrayRef<llvm::StringRef> args,
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std::optional<llvm::ArrayRef<llvm::StringRef>> env = std::nullopt);
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} // end namespace swift
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#endif // SWIFT_BASIC_PROGRAM_H
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