alexshap updated this revision to Diff 68953.
alexshap added a comment.
Drop support of -field-pos for now
Repository:
rL LLVM
https://reviews.llvm.org/D23279
Files:
CMakeLists.txt
clang-reorder-fields/CMakeLists.txt
clang-reorder-fields/ReorderFieldsAction.cpp
clang-reorder-fields/ReorderFieldsAction.h
clang-reorder-fields/tool/CMakeLists.txt
clang-reorder-fields/tool/ClangReorderFields.cpp
test/CMakeLists.txt
test/clang-reorder-fields/CStructAmbiguousName.cpp
test/clang-reorder-fields/CStructFieldsOrder.cpp
test/clang-reorder-fields/ClassMixedInitialization.cpp
test/clang-reorder-fields/ClassSimpleCtor.cpp
Index: test/clang-reorder-fields/ClassSimpleCtor.cpp
===================================================================
--- test/clang-reorder-fields/ClassSimpleCtor.cpp
+++ test/clang-reorder-fields/ClassSimpleCtor.cpp
@@ -0,0 +1,26 @@
+// RUN: cat %s > %t.cpp
+// RUN: clang-reorder-fields -record-name Foo -fields-order s1,x,z,s2 %t.cpp -i --
+// RUN: sed 's,//.*,,' %t.cpp | FileCheck %s
+
+class Foo {
+public:
+ Foo();
+
+private:
+ int x; // CHECK: const char *s1;
+ const char *s1; // CHECK: int x;
+ const char *s2; // CHECK: double z;
+ double z; // CHECK: const char *s2;
+};
+
+Foo::Foo():
+ x(12), // CHECK: s1("abc"),
+ s1("abc"), // CHECK: x(12),
+ s2("def"), // CHECK: z(3.14),
+ z(3.14) // CHECK: s2("def")
+{}
+
+int main() {
+ Foo foo;
+ return 0;
+}
Index: test/clang-reorder-fields/ClassMixedInitialization.cpp
===================================================================
--- test/clang-reorder-fields/ClassMixedInitialization.cpp
+++ test/clang-reorder-fields/ClassMixedInitialization.cpp
@@ -0,0 +1,26 @@
+// RUN: cat %s > %t.cpp
+// RUN: clang-reorder-fields -record-name Foo -fields-order e,x,pi,s2,s1 %t.cpp -i -- -std=c++11
+// RUN: sed 's,//.*,,' %t.cpp | FileCheck %s
+
+class Foo {
+public:
+ Foo();
+
+private:
+ int x; // CHECK: double e = 2.71;
+ const char *s1; // CHECK: int x;
+ const char *s2; // CHECK: double pi = 3.14;
+ double pi = 3.14; // CHECK: const char *s2;
+ double e = 2.71; // CHECK: const char *s1;
+};
+
+Foo::Foo():
+ x(12), // CHECK: x(12),
+ s1("abc"), // CHECK: s2("def"),
+ s2("def") // CHECK: s1("abc")
+{}
+
+int main() {
+ Foo foo;
+ return 0;
+}
Index: test/clang-reorder-fields/CStructFieldsOrder.cpp
===================================================================
--- test/clang-reorder-fields/CStructFieldsOrder.cpp
+++ test/clang-reorder-fields/CStructFieldsOrder.cpp
@@ -0,0 +1,18 @@
+// RUN: cat %s > %t.cpp
+// RUN: clang-reorder-fields -record-name ::bar::Foo -fields-order z,w,y,x %t.cpp -i --
+// RUN: sed 's,//.*,,' %t.cpp | FileCheck %s
+
+namespace bar {
+struct Foo {
+ const int* x; // CHECK: double z;
+ int y; // CHECK: int w;
+ double z; // CHECK: int y;
+ int w; // CHECK: const int* x;
+};
+} // end namespace bar
+
+int main() {
+ const int x = 13;
+ bar::Foo foo = { &x, 17, 1.29, 0 }; // CHECK: bar::Foo foo = { 1.29, 0, 17, &x };
+ return 0;
+}
Index: test/clang-reorder-fields/CStructAmbiguousName.cpp
===================================================================
--- test/clang-reorder-fields/CStructAmbiguousName.cpp
+++ test/clang-reorder-fields/CStructAmbiguousName.cpp
@@ -0,0 +1,20 @@
+// RUN: cat %s > %t.cpp
+// RUN: clang-reorder-fields -record-name Foo -fields-order y,x %t.cpp -i --
+// RUN: sed 's,//.*,,' %t.cpp | FileCheck %s
+
+struct Foo {
+ int x; // CHECK: int x;
+ double y; // CHECK: double y;
+};
+
+namespace bar {
+struct Foo {
+ int x; // CHECK: int x;
+ double y; // CHECK: double y;
+};
+} // end namespace bar
+
+int main() {
+ Foo foo = { 1, 1.7 }; // CHECK: Foo foo = { 1, 1.7 };
+ return 0;
+}
Index: test/CMakeLists.txt
===================================================================
--- test/CMakeLists.txt
+++ test/CMakeLists.txt
@@ -45,6 +45,7 @@
clang-include-fixer
clang-query
clang-rename
+ clang-reorder-fields
clang-tidy
find-all-symbols
modularize
Index: clang-reorder-fields/tool/ClangReorderFields.cpp
===================================================================
--- clang-reorder-fields/tool/ClangReorderFields.cpp
+++ clang-reorder-fields/tool/ClangReorderFields.cpp
@@ -0,0 +1,104 @@
+//===-- tools/extra/clang-reorder-fields/tool/ClangReorderFields.cpp -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the implementation of clang-reorder-fields tool
+///
+//===----------------------------------------------------------------------===//
+
+#include "../ReorderFieldsAction.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/LangOptions.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Frontend/TextDiagnosticPrinter.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "clang/Tooling/CommonOptionsParser.h"
+#include "clang/Tooling/Refactoring.h"
+#include "clang/Tooling/Tooling.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include <cstdlib>
+#include <string>
+#include <system_error>
+
+using namespace llvm;
+using namespace clang;
+
+cl::OptionCategory ClangReorderFieldsCategory("clang-reorder-fields options");
+
+// FIXME: error-handling
+struct FieldsOrderParser : cl::parser<SmallVector<std::string, 4>> {
+ explicit FieldsOrderParser(cl::Option &O)
+ : cl::parser<SmallVector<std::string, 4>>(O){};
+
+ bool parse(cl::Option &O, StringRef ArgName, const std::string &ArgValue,
+ SmallVector<std::string, 4> &Val) {
+ Val.clear();
+ SmallVector<StringRef, 4> Parts;
+ StringRef(ArgValue).split(Parts, ',');
+ for (const auto Part : Parts)
+ Val.push_back(Part.str());
+ return Val.empty();
+ }
+};
+
+static cl::opt<std::string>
+ RecordName("record-name", cl::desc("The name of the struct/class."),
+ cl::cat(ClangReorderFieldsCategory));
+
+static cl::opt<SmallVector<std::string, 4>, false, FieldsOrderParser>
+ FieldsOrder("fields-order", cl::desc("The desired fields order."),
+ cl::cat(ClangReorderFieldsCategory));
+
+static cl::opt<bool> Inplace("i", cl::desc("Overwrite edited <file>s."),
+ cl::cat(ClangReorderFieldsCategory));
+
+const char Usage[] = "A tool to reorder fields in C/C++ structs/classes.\n";
+
+int main(int argc, const char **argv) {
+ tooling::CommonOptionsParser OP(argc, argv, ClangReorderFieldsCategory,
+ Usage);
+
+ auto Files = OP.getSourcePathList();
+ tooling::RefactoringTool Tool(OP.getCompilations(), Files);
+
+ reorder_fields::ReorderFieldsAction Action(RecordName, FieldsOrder,
+ Tool.getReplacements());
+
+ auto Factory = tooling::newFrontendActionFactory(&Action);
+ int ExitCode;
+
+ if (Inplace) {
+ ExitCode = Tool.runAndSave(Factory.get());
+ } else {
+ ExitCode = Tool.run(Factory.get());
+
+ LangOptions DefaultLangOptions;
+ IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts(new DiagnosticOptions());
+ TextDiagnosticPrinter DiagnosticPrinter(errs(), &*DiagOpts);
+ DiagnosticsEngine Diagnostics(
+ IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs()), &*DiagOpts,
+ &DiagnosticPrinter, false);
+
+ auto &FileMgr = Tool.getFiles();
+ SourceManager Sources(Diagnostics, FileMgr);
+ Rewriter Rewrite(Sources, DefaultLangOptions);
+ Tool.applyAllReplacements(Rewrite);
+
+ for (const auto &File : Files) {
+ const auto *Entry = FileMgr.getFile(File);
+ const auto ID = Sources.translateFile(Entry);
+ Rewrite.getEditBuffer(ID).write(outs());
+ }
+ }
+ exit(ExitCode);
+}
Index: clang-reorder-fields/tool/CMakeLists.txt
===================================================================
--- clang-reorder-fields/tool/CMakeLists.txt
+++ clang-reorder-fields/tool/CMakeLists.txt
@@ -0,0 +1,12 @@
+add_clang_executable(clang-reorder-fields ClangReorderFields.cpp)
+
+target_link_libraries(clang-reorder-fields
+ clangBasic
+ clangFrontend
+ clangReorderFields
+ clangRewrite
+ clangTooling
+ clangToolingCore
+ )
+
+install(TARGETS clang-reorder-fields RUNTIME DESTINATION bin)
Index: clang-reorder-fields/ReorderFieldsAction.h
===================================================================
--- clang-reorder-fields/ReorderFieldsAction.h
+++ clang-reorder-fields/ReorderFieldsAction.h
@@ -0,0 +1,47 @@
+//===-- tools/extra/clang-reorder-fields/ReorderFieldsAction.h -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the declarations of the ReorderFieldsAction class and
+/// the FieldPosition struct.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_REORDER_FIELDS_ACTION_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_REORDER_FIELDS_ACTION_H
+
+#include "clang/Tooling/Refactoring.h"
+
+namespace clang {
+class ASTConsumer;
+
+namespace reorder_fields {
+
+class ReorderFieldsAction {
+ llvm::StringRef RecordName;
+ llvm::ArrayRef<std::string> DesiredFieldsOrder;
+ std::map<std::string, tooling::Replacements> &Replacements;
+
+public:
+ ReorderFieldsAction(
+ llvm::StringRef RecordName,
+ llvm::ArrayRef<std::string> DesiredFieldsOrder,
+ std::map<std::string, tooling::Replacements> &Replacements)
+ : RecordName(RecordName), DesiredFieldsOrder(DesiredFieldsOrder),
+ Replacements(Replacements) {}
+
+ ReorderFieldsAction(const ReorderFieldsAction &) = delete;
+ ReorderFieldsAction &operator=(const ReorderFieldsAction &) = delete;
+
+ std::unique_ptr<ASTConsumer> newASTConsumer();
+};
+} // namespace reorder_fields
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_REORDER_FIELDS_ACTION_H
Index: clang-reorder-fields/ReorderFieldsAction.cpp
===================================================================
--- clang-reorder-fields/ReorderFieldsAction.cpp
+++ clang-reorder-fields/ReorderFieldsAction.cpp
@@ -0,0 +1,263 @@
+//===-- tools/extra/clang-reorder-fields/ReorderFieldsAction.cpp -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the definition of the
+/// ReorderFieldsAction::newASTConsumer method
+///
+//===----------------------------------------------------------------------===//
+
+#include "ReorderFieldsAction.h"
+#include "clang/AST/AST.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+#include "clang/Tooling/Refactoring.h"
+#include <algorithm>
+#include <string>
+
+using namespace llvm;
+using namespace clang;
+using namespace clang::ast_matchers;
+
+static const CXXRecordDecl *findDefinition(StringRef RecordName,
+ ASTContext &Context) {
+ struct DefinitionMatchCallback : MatchFinder::MatchCallback {
+ DefinitionMatchCallback() : RecordDecl(nullptr) {}
+ virtual void run(const MatchFinder::MatchResult &Result) override {
+ const auto *RD = Result.Nodes.getNodeAs<CXXRecordDecl>("cxxRecordDecl");
+ if (RecordDecl) {
+ errs() << "Ambiguous name, several matches found: "
+ << RecordDecl->getQualifiedNameAsString() << ", "
+ << RD->getQualifiedNameAsString() << "\n";
+ RecordDecl = nullptr;
+ return;
+ }
+ RecordDecl = RD;
+ }
+ const CXXRecordDecl *RecordDecl;
+ };
+
+ MatchFinder Finder;
+ DefinitionMatchCallback Callback;
+ const auto Matcher =
+ recordDecl(hasName(RecordName), isDefinition()).bind("cxxRecordDecl");
+ Finder.addMatcher(Matcher, &Callback);
+ Finder.matchAST(Context);
+ return Callback.RecordDecl;
+}
+
+static bool setNewFieldsOrder(const CXXRecordDecl *Definition,
+ ArrayRef<std::string> DesiredFieldsOrder,
+ SmallVector<unsigned, 4> &NewFieldsOrder) {
+ assert(Definition && "Definition is null");
+
+ StringMap<unsigned> NameToIndex;
+ for (const auto *Field : Definition->fields())
+ NameToIndex[Field->getName()] = Field->getFieldIndex();
+
+ if (DesiredFieldsOrder.size() != NameToIndex.size()) {
+ errs() << "Number of provided fields doesn't match definition.\n";
+ return false;
+ }
+
+ NewFieldsOrder.clear();
+ for (const auto &Name : DesiredFieldsOrder) {
+ if (!NameToIndex.count(Name)) {
+ errs() << "Field " << Name << " not found in definition.\n";
+ return false;
+ }
+ NewFieldsOrder.push_back(NameToIndex[Name]);
+ }
+ assert(NewFieldsOrder.size() == NameToIndex.size());
+ return true;
+}
+
+// FIXME: error-handling
+static void
+addReplacement(SourceRange Old, SourceRange New, const ASTContext &Context,
+ std::map<std::string, tooling::Replacements> &Replacements) {
+ StringRef NewText =
+ Lexer::getSourceText(CharSourceRange::getTokenRange(New),
+ Context.getSourceManager(), Context.getLangOpts());
+ tooling::Replacement R(Context.getSourceManager(),
+ CharSourceRange::getTokenRange(Old), NewText,
+ Context.getLangOpts());
+ consumeError(Replacements[R.getFilePath()].add(R));
+}
+
+static void reorderFieldsInDefinition(
+ const CXXRecordDecl *Definition, ArrayRef<unsigned> NewFieldsOrder,
+ const ASTContext &Context,
+ std::map<std::string, tooling::Replacements> &Replacements) {
+ assert(Definition && "Definition is null");
+
+ SmallVector<const FieldDecl *, 10> Fields;
+ for (const auto *Field : Definition->fields())
+ Fields.push_back(Field);
+ for (const auto *Field : Definition->fields()) {
+ const auto FieldIndex = Field->getFieldIndex();
+ if (FieldIndex == NewFieldsOrder[FieldIndex])
+ continue;
+ assert(Field->getAccess() ==
+ Fields[NewFieldsOrder[FieldIndex]]->getAccess() &&
+ "Currently reodering of fields with different accesses is not "
+ "supported");
+ addReplacement(Field->getSourceRange(),
+ Fields[NewFieldsOrder[FieldIndex]]->getSourceRange(),
+ Context, Replacements);
+ }
+}
+
+static void reorderFieldsInConstructor(
+ const CXXConstructorDecl *CtorDecl, ArrayRef<unsigned> NewFieldsOrder,
+ const ASTContext &Context,
+ std::map<std::string, tooling::Replacements> &Replacements) {
+ assert(CtorDecl && "Constructor declaration is null");
+ assert(CtorDecl->isThisDeclarationADefinition() && "Not a definition");
+
+ SmallVector<unsigned, 10> NewFieldsPositions(NewFieldsOrder.size());
+ for (unsigned Index = 0; Index < NewFieldsOrder.size(); ++Index)
+ NewFieldsPositions[NewFieldsOrder[Index]] = Index;
+
+ SmallVector<const CXXCtorInitializer *, 10> OldWrittenInitializersOrder;
+ SmallVector<const CXXCtorInitializer *, 10> NewWrittenInitializersOrder;
+ for (const auto *Initializer : CtorDecl->inits()) {
+ if (!Initializer->isWritten())
+ continue;
+ OldWrittenInitializersOrder.push_back(Initializer);
+ NewWrittenInitializersOrder.push_back(Initializer);
+ }
+ auto ByFieldNewPosition = [&](const CXXCtorInitializer *LHS,
+ const CXXCtorInitializer *RHS) {
+ assert(LHS && RHS);
+ return NewFieldsPositions[LHS->getMember()->getFieldIndex()] <
+ NewFieldsPositions[RHS->getMember()->getFieldIndex()];
+ };
+ std::sort(std::begin(NewWrittenInitializersOrder),
+ std::end(NewWrittenInitializersOrder), ByFieldNewPosition);
+ assert(OldWrittenInitializersOrder.size() ==
+ NewWrittenInitializersOrder.size());
+ for (unsigned Index = 0; Index < NewWrittenInitializersOrder.size(); ++Index)
+ addReplacement(OldWrittenInitializersOrder[Index]->getSourceRange(),
+ NewWrittenInitializersOrder[Index]->getSourceRange(),
+ Context, Replacements);
+}
+
+static void reorderFieldsInInitListExpr(
+ const InitListExpr *InitListEx, ArrayRef<unsigned> NewFieldsOrder,
+ const ASTContext &Context,
+ std::map<std::string, tooling::Replacements> &Replacements) {
+ assert(InitListEx && "Init list expression is null");
+ // FIXME: InitListExpr::isExplicit probably should be const because
+ // SourceLocation::isValid is const.
+ if (!const_cast<clang::InitListExpr *>(InitListEx)->isExplicit() ||
+ !InitListEx->getNumInits())
+ return;
+ assert(InitListEx->getNumInits() == NewFieldsOrder.size() &&
+ "Currently only full initialization is supported");
+ for (unsigned Index = 0, NumInits = InitListEx->getNumInits();
+ Index < NumInits; ++Index) {
+ if (Index == NewFieldsOrder[Index])
+ continue;
+ addReplacement(InitListEx->getInit(Index)->getSourceRange(),
+ InitListEx->getInit(NewFieldsOrder[Index])->getSourceRange(),
+ Context, Replacements);
+ }
+}
+
+namespace clang {
+namespace reorder_fields {
+namespace {
+class InitListExprMatchCallback : public MatchFinder::MatchCallback {
+ const CXXRecordDecl *Definition;
+ ArrayRef<unsigned> NewFieldsOrder;
+ const ASTContext &Context;
+ std::map<std::string, tooling::Replacements> &Replacements;
+
+public:
+ InitListExprMatchCallback(
+ const CXXRecordDecl *Definition, ArrayRef<unsigned> NewFieldsOrder,
+ const ASTContext &Context,
+ std::map<std::string, tooling::Replacements> &Replacements)
+ : Definition(Definition), NewFieldsOrder(NewFieldsOrder),
+ Context(Context), Replacements(Replacements) {}
+
+ virtual void run(const MatchFinder::MatchResult &Result) override {
+ const auto *E = Result.Nodes.getNodeAs<InitListExpr>("initListExpr");
+ assert(E && "InitListExpr is null");
+ const auto *T = E->getType().getCanonicalType().getTypePtr();
+ assert(T && "Type is null");
+ const auto *RD = T->getAsCXXRecordDecl();
+ if (!RD)
+ return;
+ if (Definition != RD->getDefinition())
+ return;
+ reorderFieldsInInitListExpr(E, NewFieldsOrder, Context, Replacements);
+ }
+};
+
+class ReorderingConsumer : public ASTConsumer {
+ StringRef RecordName;
+ ArrayRef<std::string> DesiredFieldsOrder;
+ std::map<std::string, tooling::Replacements> &Replacements;
+
+public:
+ ReorderingConsumer(StringRef RecordName,
+ ArrayRef<std::string> DesiredFieldsOrder,
+ std::map<std::string, tooling::Replacements> &Replacements)
+ : RecordName(RecordName), DesiredFieldsOrder(DesiredFieldsOrder),
+ Replacements(Replacements) {}
+
+ ReorderingConsumer(const ReorderingConsumer &) = delete;
+ ReorderingConsumer &operator=(const ReorderingConsumer &) = delete;
+
+ void HandleTranslationUnit(ASTContext &Context) override {
+ const CXXRecordDecl *RD = findDefinition(RecordName, Context);
+ if (!RD) {
+ errs() << "Definition for name " << RecordName
+ << " not found or ambiguous.\n";
+ return;
+ }
+
+ SmallVector<unsigned, 4> NewFieldsOrder;
+ if (!setNewFieldsOrder(RD, DesiredFieldsOrder, NewFieldsOrder))
+ return;
+ reorderFieldsInDefinition(RD, NewFieldsOrder, Context, Replacements);
+ for (const auto *C : RD->ctors()) {
+ if (C->isImplicit() || C->isDelegatingConstructor())
+ continue;
+ const auto *D = C->getDefinition();
+ if (!D)
+ continue;
+ reorderFieldsInConstructor(cast<const CXXConstructorDecl>(D),
+ NewFieldsOrder, Context, Replacements);
+ }
+ if (!RD->isAggregate())
+ return;
+ MatchFinder Finder;
+ InitListExprMatchCallback Callback(RD, NewFieldsOrder, Context,
+ Replacements);
+ const auto Matcher = initListExpr().bind("initListExpr");
+ Finder.addMatcher(Matcher, &Callback);
+ Finder.matchAST(Context);
+ }
+};
+} // end anonymous namespace
+
+std::unique_ptr<ASTConsumer> ReorderFieldsAction::newASTConsumer() {
+ return llvm::make_unique<ReorderingConsumer>(RecordName, DesiredFieldsOrder,
+ Replacements);
+}
+
+} // namespace reorder_fields
+} // namespace clang
Index: clang-reorder-fields/CMakeLists.txt
===================================================================
--- clang-reorder-fields/CMakeLists.txt
+++ clang-reorder-fields/CMakeLists.txt
@@ -0,0 +1,15 @@
+set(LLVM_LINK_COMPONENTS support)
+
+add_clang_library(clangReorderFields
+ ReorderFieldsAction.cpp
+
+ LINK_LIBS
+ clangAST
+ clangASTMatchers
+ clangBasic
+ clangIndex
+ clangLex
+ clangToolingCore
+ )
+
+add_subdirectory(tool)
Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -1,5 +1,6 @@
add_subdirectory(clang-apply-replacements)
add_subdirectory(clang-rename)
+add_subdirectory(clang-reorder-fields)
add_subdirectory(modularize)
if(CLANG_ENABLE_STATIC_ANALYZER)
add_subdirectory(clang-tidy)
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