[Macro] Fix bugs in macro dependency scanning

include/swift-c/DependencyScan/DependencyScan.h

@@ -49,6 +49,9 @@ typedef struct swiftscan_dependency_info_s *swiftscan_dependency_info_t;
 /// Opaque container to a link library info.
 typedef struct swiftscan_link_library_info_s *swiftscan_link_library_info_t;
 
+/// Opaque container to a macro dependency.
+typedef struct swiftscan_macro_dependency_s *swiftscan_macro_dependency_t;
+
 /// Opaque container to an overall result of a dependency scan.
 typedef struct swiftscan_dependency_graph_s *swiftscan_dependency_graph_t;
 
@@ -73,6 +76,12 @@ typedef struct {
   size_t count;
 } swiftscan_link_library_set_t;
 
+/// Set of macro dependency
+typedef struct {
+  swiftscan_macro_dependency_t *macro_dependencies;
+  size_t count;
+} swiftscan_macro_dependency_set_t;
+
 typedef enum {
   SWIFTSCAN_DIAGNOSTIC_SEVERITY_ERROR = 0,
   SWIFTSCAN_DIAGNOSTIC_SEVERITY_WARNING = 1,

include/swift/AST/ModuleDependencies.h

@@ -253,7 +253,7 @@ struct CommonSwiftTextualModuleDependencyDetails {
   std::vector<std::string> bridgingModuleDependencies;
 
   /// The macro dependencies.
-  llvm::StringMap<MacroPluginDependency> macroDependencies;
+  std::map<std::string, MacroPluginDependency> macroDependencies;
 
   /// The Swift frontend invocation arguments to build the Swift module from the
   /// interface.
@@ -324,7 +324,7 @@ class SwiftInterfaceModuleDependenciesStorage
   void addMacroDependency(StringRef macroModuleName, StringRef libraryPath,
                           StringRef executablePath) {
     textualModuleDetails.macroDependencies.insert(
-        {macroModuleName, {libraryPath.str(), executablePath.str()}});
+        {macroModuleName.str(), {libraryPath.str(), executablePath.str()}});
   }
 };
 
@@ -380,7 +380,7 @@ class SwiftSourceModuleDependenciesStorage
   void addMacroDependency(StringRef macroModuleName, StringRef libraryPath,
                           StringRef executablePath) {
     textualModuleDetails.macroDependencies.insert(
-        {macroModuleName, {libraryPath.str(), executablePath.str()}});
+        {macroModuleName.str(), {libraryPath.str(), executablePath.str()}});
   }
 };
 
@@ -796,7 +796,7 @@ class ModuleDependencyInfo {
   /// For a Source dependency, register a `Testable` import
   void addTestableImport(ImportPath::Module module);
 
-  /// For a Source dependency, register a macro dependency.
+  /// For a Source/Textual dependency, register a macro dependency.
   void addMacroDependency(StringRef macroModuleName, StringRef libraryPath,
                           StringRef executablePath);
 

include/swift/DependencyScan/DependencyScanImpl.h

@@ -73,6 +73,12 @@ struct swiftscan_link_library_info_s {
   bool forceLoad;
 };
 
+struct swiftscan_macro_dependency_s {
+  swiftscan_string_ref_t moduleName;
+  swiftscan_string_ref_t libraryPath;
+  swiftscan_string_ref_t executablePath;
+};
+
 /// Swift modules to be built from a module interface, may have a bridging
 /// header.
 typedef struct {
@@ -123,6 +129,9 @@ typedef struct {
 
   /// ModuleCacheKey
   swiftscan_string_ref_t module_cache_key;
+
+  /// Macro dependecies.
+  swiftscan_macro_dependency_set_t *macro_dependencies;
 } swiftscan_swift_textual_details_t;
 
 /// Swift modules with only a binary module file.

lib/DependencyScan/DependencyScanJSON.cpp

@@ -243,6 +243,49 @@ void writeLinkLibraries(llvm::raw_ostream &out,
   out << "\n";
 }
 
+static void
+writeMacroDependencies(llvm::raw_ostream &out,
+                       const swiftscan_macro_dependency_set_t *macro_deps,
+                       unsigned indentLevel, bool trailingComma) {
+  if (macro_deps->count == 0)
+    return;
+
+  out.indent(indentLevel * 2);
+  out << "\"macroDependencies\": ";
+  out << "[\n";
+  for (size_t i = 0; i < macro_deps->count; ++i) {
+    const auto &macroInfo = *macro_deps->macro_dependencies[i];
+    out.indent((indentLevel + 1) * 2);
+    out << "{\n";
+    auto entryIndentLevel = ((indentLevel + 2) * 2);
+    out.indent(entryIndentLevel);
+    out << "\"moduleName\": ";
+    writeJSONValue(out, macroInfo.moduleName, indentLevel);
+    out << ",\n";
+    out.indent(entryIndentLevel);
+    out << "\"libraryPath\": ";
+    writeJSONValue(out, macroInfo.libraryPath, entryIndentLevel);
+    out << ",\n";
+    out.indent(entryIndentLevel);
+    out << "\"executablePath\": ";
+    writeJSONValue(out, macroInfo.executablePath, entryIndentLevel);
+    out << "\n";
+    out.indent((indentLevel + 1) * 2);
+    out << "}";
+    if (i != macro_deps->count - 1) {
+      out << ",";
+    }
+    out << "\n";
+  }
+
+  out.indent(indentLevel * 2);
+  out << "]";
+
+  if (trailingComma)
+    out << ",";
+  out << "\n";
+}
+
 static const swiftscan_swift_textual_details_t *
 getAsTextualDependencyModule(swiftscan_module_details_t details) {
   if (details->kind == SWIFTSCAN_DEPENDENCY_INFO_SWIFT_TEXTUAL)
@@ -413,6 +456,8 @@ void writeJSON(llvm::raw_ostream &out,
                              swiftTextualDeps->module_cache_key, 5,
                              /*trailingComma=*/true);
       }
+      writeMacroDependencies(out, swiftTextualDeps->macro_dependencies, 5,
+                             /*trailingComma=*/true);
       writeJSONSingleField(out, "isFramework", swiftTextualDeps->is_framework,
                            5, commaAfterFramework);
       if (swiftTextualDeps->extra_pcm_args->count != 0) {

lib/DependencyScan/ModuleDependencyCacheSerialization.cpp

@@ -305,7 +305,7 @@ bool ModuleDependenciesCacheDeserializer::readGraph(SwiftDependencyScanningServi
       if (!moduleCacheKeyID)
         llvm::report_fatal_error("Bad moduleCacheKey");
 
-      // TODO: LinkLibraries
+      // TODO: LinkLibraries, MacroDependencies
       // Form the dependencies storage object
       auto moduleDep = ModuleDependencyInfo::forSwiftInterfaceModule(
           outputModulePath.value(), optionalSwiftInterfaceFile.value(),

lib/DependencyScan/ScanDependencies.cpp

@@ -10,6 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "swift-c/DependencyScan/DependencyScan.h"
 #include "swift/Basic/PrettyStackTrace.h"
 
 #include "swift/AST/ASTContext.h"
@@ -256,14 +257,6 @@ static llvm::Error resolveExplicitModuleInputs(
                        : interfaceDepDetails->moduleCacheKey;
       commandLine.push_back("-swift-module-file=" + depModuleID.ModuleName + "=" +
                             path);
-      // Add the exported macro from interface into current module.
-      llvm::for_each(
-          interfaceDepDetails->textualModuleDetails.macroDependencies,
-          [&](const auto &entry) {
-            dependencyInfoCopy.addMacroDependency(entry.first(),
-                                                  entry.second.LibraryPath,
-                                                  entry.second.ExecutablePath);
-          });
     } break;
     case swift::ModuleDependencyKind::SwiftBinary: {
       auto binaryDepDetails = depInfo.getAsSwiftBinaryModule();
@@ -282,7 +275,7 @@ static llvm::Error resolveExplicitModuleInputs(
             {bridgingHeaderDepName, ModuleDependencyKind::Clang});
         const auto bridgingHeaderDepModuleDetails =
           optionalBridgingHeaderDepModuleInfo.getAsClangModule();
-	commandLine.push_back("-Xcc");
+        commandLine.push_back("-Xcc");
         commandLine.push_back(
             "-fmodule-map-file=" +
             remapPath(bridgingHeaderDepModuleDetails->moduleMapFile));
@@ -372,6 +365,10 @@ static llvm::Error resolveExplicitModuleInputs(
       llvm::for_each(
           textualDep->auxiliaryFiles,
           [&tracker](const std::string &file) { tracker->trackFile(file); });
+      llvm::for_each(textualDep->textualModuleDetails.macroDependencies,
+                     [&tracker](const auto &entry) {
+                       tracker->trackFile(entry.second.LibraryPath);
+                     });
       auto root = tracker->createTreeFromDependencies();
       if (!root)
         return root.takeError();
@@ -642,6 +639,28 @@ static swiftscan_diagnostic_set_t *mapCollectedDiagnosticsForOutput(
   return diagnosticOutput;
 }
 
+static swiftscan_macro_dependency_set_t *createMacroDependencySet(
+    const std::map<std::string, MacroPluginDependency> &macroDeps) {
+  swiftscan_macro_dependency_set_t *set = new swiftscan_macro_dependency_set_t;
+  if (macroDeps.empty()) {
+    set->count = 0;
+    set->macro_dependencies = nullptr;
+    return set;
+  }
+  set->count = macroDeps.size();
+  set->macro_dependencies = new swiftscan_macro_dependency_t[set->count];
+  unsigned SI = 0;
+  for (auto &entry : macroDeps) {
+    set->macro_dependencies[SI] = new swiftscan_macro_dependency_s;
+    set->macro_dependencies[SI]->moduleName = create_clone(entry.first.c_str());
+    set->macro_dependencies[SI]->libraryPath =
+        create_clone(entry.second.LibraryPath.c_str());
+    set->macro_dependencies[SI]->executablePath =
+        create_clone(entry.second.ExecutablePath.c_str());
+  }
+  return set;
+}
+
 static swiftscan_dependency_graph_t
 generateFullDependencyGraph(const CompilerInstance &instance,
                             const DependencyScanDiagnosticCollector *diagnosticCollector,
@@ -732,7 +751,9 @@ generateFullDependencyGraph(const CompilerInstance &instance,
                              .CASFileSystemRootID.c_str()),
             create_clone(swiftTextualDeps->textualModuleDetails
                              .CASBridgingHeaderIncludeTreeRootID.c_str()),
-            create_clone(swiftTextualDeps->moduleCacheKey.c_str())};
+            create_clone(swiftTextualDeps->moduleCacheKey.c_str()),
+            createMacroDependencySet(
+                swiftTextualDeps->textualModuleDetails.macroDependencies)};
       } else if (swiftSourceDeps) {
         swiftscan_string_ref_t moduleInterfacePath = create_null();
         swiftscan_string_ref_t bridgingHeaderPath =
@@ -767,7 +788,9 @@ generateFullDependencyGraph(const CompilerInstance &instance,
             /*IncludeTree*/
             create_clone(swiftSourceDeps->textualModuleDetails
                              .CASBridgingHeaderIncludeTreeRootID.c_str()),
-            /*CacheKey*/ create_clone("")};
+            /*CacheKey*/ create_clone(""),
+            createMacroDependencySet(
+                swiftSourceDeps->textualModuleDetails.macroDependencies)};
       } else if (swiftPlaceholderDeps) {
         details->kind = SWIFTSCAN_DEPENDENCY_INFO_SWIFT_PLACEHOLDER;
         details->swift_placeholder_details = {

lib/Frontend/ModuleInterfaceLoader.cpp

@@ -19,6 +19,7 @@
 #include "swift/AST/DiagnosticsSema.h"
 #include "swift/AST/FileSystem.h"
 #include "swift/AST/Module.h"
+#include "swift/AST/SearchPathOptions.h"
 #include "swift/Basic/Assertions.h"
 #include "swift/Basic/Platform.h"
 #include "swift/Basic/StringExtras.h"
@@ -1697,6 +1698,39 @@ void InterfaceSubContextDelegateImpl::inheritOptionsForBuildingInterface(
     genericSubInvocation.setPlatformAvailabilityInheritanceMapPath(*SearchPathOpts.PlatformAvailabilityInheritanceMapPath);
   }
 
+  for (auto &entry : SearchPathOpts.PluginSearchOpts) {
+    switch (entry.getKind()) {
+    case PluginSearchOption::Kind::LoadPluginLibrary: {
+      auto &val = entry.get<PluginSearchOption::LoadPluginLibrary>();
+      GenericArgs.push_back("-load-plugin-library");
+      GenericArgs.push_back(ArgSaver.save(val.LibraryPath));
+      break;
+    }
+    case PluginSearchOption::Kind::LoadPluginExecutable: {
+      auto &val = entry.get<PluginSearchOption::LoadPluginExecutable>();
+      for (auto &moduleName : val.ModuleNames) {
+        GenericArgs.push_back("-load-plugin-executable");
+        GenericArgs.push_back(
+            ArgSaver.save(val.ExecutablePath + "#" + moduleName));
+      }
+      break;
+    }
+    case PluginSearchOption::Kind::PluginPath: {
+      auto &val = entry.get<PluginSearchOption::PluginPath>();
+      GenericArgs.push_back("-plugin-path");
+      GenericArgs.push_back(ArgSaver.save(val.SearchPath));
+      break;
+    }
+    case PluginSearchOption::Kind::ExternalPluginPath: {
+      auto &val = entry.get<PluginSearchOption::ExternalPluginPath>();
+      GenericArgs.push_back("-external-plugin-path");
+      GenericArgs.push_back(
+          ArgSaver.save(val.SearchPath + "#" + val.ServerPath));
+      break;
+    }
+    }
+  }
+
   genericSubInvocation.getFrontendOptions().InputMode
       = FrontendOptions::ParseInputMode::SwiftModuleInterface;
   if (!SearchPathOpts.RuntimeResourcePath.empty()) {

test/CAS/macro_deps.swift

@@ -0,0 +1,104 @@
+// REQUIRES: swift_swift_parser
+
+/// Test loading dependencies that has macros.
+// RUN: %empty-directory(%t)
+// RUN: split-file %s %t
+
+/// Build macros.
+// RUN: %host-build-swift -swift-version 5 -emit-library -o %t/%target-library-name(MacroOne) -module-name=MacroOne %t/macro-1.swift
+// RUN: %host-build-swift -swift-version 5 -emit-library -o %t/%target-library-name(MacroTwo) -module-name=MacroTwo %t/macro-2.swift
+
+/// Build binary module that depends on textual module that uses macro.
+// RUN: %target-swift-frontend -emit-module -module-cache-path %t/clang-module-cache %t/test.swift -module-name Test -o %t/include/Test.swiftmodule -I %t/include \
+// RUN:   -O -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -swift-version 5 -external-plugin-path %t#%swift-plugin-server
+
+// RUN: %target-swift-frontend -scan-dependencies -module-load-mode prefer-serialized -module-name MyApp -module-cache-path %t/clang-module-cache -O \
+// RUN:   -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import -I %t/include \
+// RUN:   %t/main.swift -o %t/deps.json -swift-version 5 -cache-compile-job -cas-path %t/cas -external-plugin-path %t#%swift-plugin-server
+
+// RUN: %{python} %S/Inputs/SwiftDepsExtractor.py %t/deps.json Foo macroDependencies | %FileCheck %s --check-prefix=FOO-DEPS
+// FOO-DEPS: MacroOne
+// FOO-DEPS-NOT: MacroTwo
+
+// RUN: %{python} %S/Inputs/SwiftDepsExtractor.py %t/deps.json MyApp macroDependencies | %FileCheck %s --check-prefix=APP-DEPS
+// APP-DEPS: MacroTwo
+// APP-DEPS-NOT: MacroOne
+
+/// Build all dependencies.
+// RUN: %S/Inputs/BuildCommandExtractor.py %t/deps.json clang:SwiftShims > %t/SwiftShims.cmd
+// RUN: %swift_frontend_plain @%t/SwiftShims.cmd
+// RUN: %S/Inputs/BuildCommandExtractor.py %t/deps.json Foo > %t/Foo.cmd
+// RUN: %swift_frontend_plain @%t/Foo.cmd
+
+// RUN: %S/Inputs/BuildCommandExtractor.py %t/deps.json MyApp > %t/MyApp.cmd
+// RUN: %{python} %S/Inputs/GenerateExplicitModuleMap.py %t/deps.json > %t/map.json
+// RUN: llvm-cas --cas %t/cas --make-blob --data %t/map.json > %t/map.casid
+
+// RUN: %target-swift-frontend -diagnostic-style=swift \
+// RUN:   -emit-module -o %t/Test.swiftmodule -cache-compile-job -cas-path %t/cas \
+// RUN:   -swift-version 5 -disable-implicit-swift-modules \
+// RUN:   -external-plugin-path %t#%swift-plugin-server \
+// RUN:   -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import \
+// RUN:   -module-name MyApp -explicit-swift-module-map-file @%t/map.casid -O \
+// RUN:   %t/main.swift @%t/MyApp.cmd
+
+//--- macro-1.swift
+import SwiftSyntax
+@_spi(ExperimentalLanguageFeature) import SwiftSyntaxMacros
+
+public struct AssertMacro: ExpressionMacro {
+  public static func expansion(
+    of macro: some FreestandingMacroExpansionSyntax,
+    in context: some MacroExpansionContext
+  ) -> ExprSyntax {
+    guard let argument = macro.arguments.first?.expression else {
+      fatalError("boom")
+    }
+
+    return "assert(\(argument))"
+  }
+}
+
+//--- macro-2.swift
+import SwiftSyntax
+@_spi(ExperimentalLanguageFeature) import SwiftSyntaxMacros
+
+public struct StringifyMacro: ExpressionMacro {
+  public static func expansion(
+    of macro: some FreestandingMacroExpansionSyntax,
+    in context: some MacroExpansionContext
+  ) -> ExprSyntax {
+    guard let argument = macro.arguments.first?.expression else {
+      fatalError("boom")
+    }
+
+    return "(\(argument), \(StringLiteralExprSyntax(content: argument.description)))"
+  }
+}
+
+//--- include/Foo.swiftinterface
+// swift-interface-format-version: 1.0
+// swift-module-flags: -enable-library-evolution -swift-version 5 -O -module-name Foo -disable-implicit-string-processing-module-import -disable-implicit-concurrency-module-import
+import Swift
+public func foo()
+@freestanding(expression) public macro assert(_: Bool) = #externalMacro(module: "MacroOne", type: "AssertMacro")
+@inlinable
+public func assertFalse() {
+    #assert(false)
+}
+
+//--- test.swift
+import Foo
+@inlinable
+public func test() {
+    #assert(true)
+}
+
+//--- main.swift
+import Test
+@freestanding(expression) macro stringify<T>(_ value: T) -> (T, String) = #externalMacro(module: "MacroTwo", type: "StringifyMacro")
+
+func appTest() {
+    let str = #stringify("test")
+    test()
+}