Move swift-parser-cli to its own package

Author: StevenWong12

Package.swift

@@ -257,16 +257,6 @@ let package = Package(
       dependencies: ["_SwiftSyntaxTestSupport", "SwiftRefactor"]
     ),
 
-    // MARK: - Executable targets
-
-    .executableTarget(
-      name: "swift-parser-cli",
-      dependencies: [
-        "_InstructionCounter", "SwiftBasicFormat", "SwiftDiagnostics", "SwiftOperators", "SwiftParser", "SwiftParserDiagnostics", "SwiftSyntax",
-        .product(name: "ArgumentParser", package: "swift-argument-parser"),
-      ]
-    ),
-
     // MARK: - Deprecated targets
 
     // MARK: PerformanceTest
@@ -295,14 +285,3 @@ package.targets.append(
     }
   )
 )
-
-if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
-  // Building standalone.
-  package.dependencies += [
-    .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.2")
-  ]
-} else {
-  package.dependencies += [
-    .package(path: "../swift-argument-parser")
-  ]
-}

SwiftParserCLI/Package.swift

@@ -0,0 +1,45 @@
+// swift-tools-version:5.7
+import PackageDescription
+
+let package = Package(
+  name: "SwiftParserCLI",
+  platforms: [
+    .macOS(.v10_15)
+  ],
+  products: [
+    .executable(name: "swift-parser-cli", targets: ["swift-parser-cli"])
+  ],
+  dependencies: [
+    .package(path: "..")
+  ],
+  targets: [
+    .target(
+      name: "_InstructionCounter"
+    ),
+
+    .executableTarget(
+      name: "swift-parser-cli",
+      dependencies: [
+        "_InstructionCounter",
+        .product(name: "SwiftBasicFormat", package: "swift-syntax"),
+        .product(name: "SwiftDiagnostics", package: "swift-syntax"),
+        .product(name: "SwiftOperators", package: "swift-syntax"),
+        .product(name: "SwiftParser", package: "swift-syntax"),
+        .product(name: "SwiftParserDiagnostics", package: "swift-syntax"),
+        .product(name: "SwiftSyntax", package: "swift-syntax"),
+        .product(name: "ArgumentParser", package: "swift-argument-parser"),
+      ]
+    ),
+  ]
+)
+
+if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
+  // Building standalone.
+  package.dependencies += [
+    .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.2")
+  ]
+} else {
+  package.dependencies += [
+    .package(path: "../../swift-argument-parser")
+  ]
+}

SwiftParserCLI/Sources/_InstructionCounter/include/InstructionsExecuted.h

@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdint.h>
+
+/// On macOS returns the number of instructions the process has executed since
+/// it was launched, on all other platforms returns 0.
+uint64_t getInstructionsExecuted();

SwiftParserCLI/Sources/_InstructionCounter/src/InstructionsExecuted.c

@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#if __APPLE__
+#include <TargetConditionals.h>
+#if TARGET_OS_MAC && !TARGET_OS_IPHONE
+#define TARGET_IS_MACOS 1
+#endif
+#endif
+
+#include "InstructionsExecuted.h"
+
+#ifdef TARGET_IS_MACOS
+#include <libproc.h>
+#include <sys/resource.h>
+#include <unistd.h>
+
+uint64_t getInstructionsExecuted() {
+  struct rusage_info_v4 ru;
+  if (proc_pid_rusage(getpid(), RUSAGE_INFO_V4, (rusage_info_t *)&ru) == 0) {
+    return ru.ri_instructions;
+  }
+  return 0;
+}
+#else
+uint64_t getInstructionsExecuted() {
+  return 0;
+}
+#endif