[ModuleInterface] Add new TextualInterfaceOption flag, move TextualInterfaceGeneration.{h,cpp}

include/swift/Frontend/ParseableInterfaceGeneration.h

@@ -10,8 +10,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef SWIFT_FRONTENDTOOL_PARSEABLEINTERFACEGENERATION_H
+#ifndef SWIFT_FRONTEND_PARSEABLEINTERFACEGENERATION_H
-#define SWIFT_FRONTENDTOOL_PARSEABLEINTERFACEGENERATION_H
+#define SWIFT_FRONTEND_PARSEABLEINTERFACEGENERATION_H
 
 #include "swift/Basic/LLVM.h"
 

include/swift/Option/Options.h

@@ -35,6 +35,7 @@ namespace options {
     ModuleWrapOption = (1 << 10),
     SwiftFormatOption = (1 << 11),
     ArgumentIsPath = (1 << 12),
+    TextualInterfaceOption = (1 << 13),
   };
 
   enum ID {

include/swift/Option/Options.td

@@ -47,6 +47,10 @@ def DoesNotAffectIncrementalBuild : OptionFlag;
 // current working directory.
 def ArgumentIsPath : OptionFlag;
 
+// The option should be written into a .swiftinterface textual interface file,
+// and read/parsed from there when reconstituting a .swiftmodule from it.
+def TextualInterfaceOption : OptionFlag;
+
 /////////
 // Options
 

lib/Frontend/CMakeLists.txt

@@ -7,6 +7,7 @@ add_swift_library(swiftFrontend STATIC
   Frontend.cpp
   FrontendInputsAndOutputs.cpp
   FrontendOptions.cpp
+  ParseableInterfaceGeneration.cpp
   PrintingDiagnosticConsumer.cpp
   SerializedDiagnosticConsumer.cpp
   DEPENDS

lib/Frontend/ParseableInterfaceGeneration.cpp

@@ -10,12 +10,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "ParseableInterfaceGeneration.h"
-
 #include "swift/AST/ASTContext.h"
 #include "swift/AST/Decl.h"
 #include "swift/AST/DiagnosticsFrontend.h"
 #include "swift/AST/Module.h"
+#include "swift/Frontend/ParseableInterfaceGeneration.h"
 #include "clang/Basic/Module.h"
 
 using namespace swift;

lib/FrontendTool/CMakeLists.txt

@@ -3,7 +3,6 @@ add_swift_library(swiftFrontendTool STATIC
   ImportedModules.cpp
   ReferenceDependencies.cpp
   TBD.cpp
-  ParseableInterfaceGeneration.cpp
   DEPENDS
     swift-syntax-generated-headers SwiftOptions
   LINK_LIBRARIES

lib/FrontendTool/FrontendTool.cpp

@@ -24,7 +24,6 @@
 #include "ImportedModules.h"
 #include "ReferenceDependencies.h"
 #include "TBD.h"
-#include "ParseableInterfaceGeneration.h"
 
 #include "swift/Subsystems.h"
 #include "swift/AST/ASTScope.h"
@@ -50,6 +49,7 @@
 #include "swift/Frontend/Frontend.h"
 #include "swift/Frontend/PrintingDiagnosticConsumer.h"
 #include "swift/Frontend/SerializedDiagnosticConsumer.h"
+#include "swift/Frontend/ParseableInterfaceGeneration.h"
 #include "swift/Immediate/Immediate.h"
 #include "swift/Index/IndexRecord.h"
 #include "swift/Option/Options.h"