sourcekitd: using gyb to generate UIDs instead of a def file. NFC (swiftlang#14549)

Inspired by the infrastructure of SwiftSyntax, a gyb file can facilitate
cross-language sharing.

Author: nkcsgexi

tools/CMakeLists.txt

@@ -11,6 +11,7 @@ endif()
 
 # Add generated libSyntax headers to global dependencies.
 list(APPEND LLVM_COMMON_DEPENDS swift-syntax-generated-headers)
+list(APPEND LLVM_COMMON_DEPENDS generated_sourcekit_uids)
 
 add_swift_tool_subdirectory(driver)
 add_swift_tool_subdirectory(sil-opt)

tools/SourceKit/CMakeLists.txt

@@ -83,6 +83,7 @@ endif()
 include_directories(BEFORE
   ${SOURCEKIT_BINARY_DIR}/include
   ${SOURCEKIT_SOURCE_DIR}/include
+  ${SOURCEKIT_BINARY_DIR}/tools/SourceKit/include
 )
 
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
@@ -150,5 +151,6 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
   set(SOURCEKIT_NEED_EXPLICIT_LIBDISPATCH TRUE)
 endif()
 
+add_subdirectory(include)
 add_subdirectory(lib)
 add_subdirectory(tools)

tools/SourceKit/include/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(SourceKit)

tools/SourceKit/include/SourceKit/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(Core)

tools/SourceKit/include/SourceKit/Core/CMakeLists.txt

@@ -0,0 +1 @@
+add_gyb_target(generated_sourcekit_uids ProtocolUIDs.def.gyb)

tools/SourceKit/include/SourceKit/Core/ProtocolUIDs.def

@@ -0,0 +1,48 @@
+%{
+  # -*- mode: Python -*-
+  from gyb_sourcekit_support.UIDs import UID_KEYS
+  from gyb_sourcekit_support.UIDs import UID_REQUESTS
+  from gyb_sourcekit_support.UIDs import UID_KINDS
+  # Ignore the following admonition; it applies to the resulting .def file only
+}%
+//// Automatically Generated From ProtocolUIDs.def.gyb.
+//// Do Not Edit Directly!
+//===---------------- ProtocolUIDs.def.gyb - SourceKitd UIDS -------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2018 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef KEY
+#define KEY(NAME, CONTENT)
+#endif
+
+#ifndef REQUEST
+#define REQUEST(NAME, CONTENT)
+#endif
+
+#ifndef KIND
+#define KIND(NAME, CONTENT)
+#endif
+
+% for K in UID_KEYS:
+KEY(${K.internalName}, "${K.externalName}")
+% end
+
+% for R in UID_REQUESTS:
+REQUEST(${R.internalName}, "${R.externalName}")
+% end
+
+% for K in UID_KINDS:
+KIND(${K.internalName}, "${K.externalName}")
+% end
+
+#undef KIND
+#undef REQUEST
+#undef KEY

tools/SourceKit/include/SourceKit/Core/ProtocolUIDs.def.gyb

@@ -0,0 +1,16 @@
+# gyb_sourcekit_support/__init__.py - Helpers for building Sourcekit -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2018 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
+#
+# ----------------------------------------------------------------------------
+#
+# This file needs to be here in order for Python to treat the
+# utils/gyb_sourcekit_support/ directory as a module.
+#
+# ----------------------------------------------------------------------------