Rename _CShims -> _SwiftSyntaxCShims

Avoid possible module name collision

(cherry picked from commit 1e2c3bd)

Author: rintaro

Package.swift

@@ -31,7 +31,7 @@ let package = Package(
   targets: [
     // MARK: - Internal helper targets
     .target(
-      name: "_CShims"
+      name: "_SwiftSyntaxCShims"
     ),
 
     .target(
@@ -77,7 +77,7 @@ let package = Package(
 
     .target(
       name: "SwiftCompilerPlugin",
-      dependencies: ["SwiftCompilerPluginMessageHandling", "SwiftSyntaxMacros", "_CShims"],
+      dependencies: ["SwiftCompilerPluginMessageHandling", "SwiftSyntaxMacros", "_SwiftSyntaxCShims"],
       exclude: ["CMakeLists.txt"]
     ),
 

Sources/CMakeLists.txt

@@ -6,7 +6,7 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
-add_subdirectory(_CShims)
+add_subdirectory(_SwiftSyntaxCShims)
 add_subdirectory(SwiftBasicFormat)
 add_subdirectory(SwiftSyntax)
 add_subdirectory(SwiftDiagnostics)

Sources/SwiftCompilerPlugin/CMakeLists.txt

@@ -14,5 +14,5 @@ add_swift_syntax_library(SwiftCompilerPlugin
 target_link_swift_syntax_libraries(SwiftCompilerPlugin PUBLIC
   SwiftSyntaxMacros
   SwiftCompilerPluginMessageHandling
-  SwiftSyntax_CShims
+  _SwiftSyntaxCShims
 )

Sources/SwiftCompilerPlugin/CompilerPlugin.swift

@@ -13,7 +13,7 @@
 // https://github.com/apple/swift-package-manager/blob/main/Sources/PackagePlugin/Plugin.swift
 
 #if swift(>=6.0)
-private import _CShims
+private import _SwiftSyntaxCShims
 public import SwiftSyntaxMacros
 @_spi(PluginMessage) private import SwiftCompilerPluginMessageHandling
 #if canImport(Darwin)
@@ -24,7 +24,7 @@ private import Glibc
 private import ucrt
 #endif
 #else
-import _CShims
+import _SwiftSyntaxCShims
 import SwiftSyntaxMacros
 @_spi(PluginMessage) import SwiftCompilerPluginMessageHandling
 #if canImport(Darwin)

Sources/_CShims/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_library(_SwiftSyntaxCShims INTERFACE)
+target_include_directories(_SwiftSyntaxCShims INTERFACE "include")
+set_property(GLOBAL APPEND PROPERTY SWIFT_EXPORTS _SwiftSyntaxCShims)
+install(TARGETS _SwiftSyntaxCShims EXPORT SwiftSyntaxTargets)

Sources/_CShims/include/_CShims.h

@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2024 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 <errno.h>
+#include <stdio.h>
+
+typedef FILE *_ss_ptr_FILE;
+
+static _ss_ptr_FILE _ss_stdout(void) {
+  return stdout;
+}
+
+static _ss_ptr_FILE _ss_stdin(void) {
+  return stdin;
+}
+
+static _ss_ptr_FILE _ss_stderr(void) {
+  return stderr;
+}
+
+static int _ss_errno(void) {
+  return errno;
+}

Sources/_CShims/include/module.modulemap

@@ -0,0 +1,4 @@
+module _SwiftSyntaxCShims {
+  header "_stdio.h"
+  export *
+}