malcolm.parsons updated this revision to Diff 76410.
malcolm.parsons added a comment.
Add to release notes.
https://reviews.llvm.org/D26138
Files:
clang-tidy/modernize/CMakeLists.txt
clang-tidy/modernize/ModernizeTidyModule.cpp
clang-tidy/modernize/UseDeleteCheck.cpp
clang-tidy/modernize/UseDeleteCheck.h
docs/ReleaseNotes.rst
docs/clang-tidy/checks/list.rst
docs/clang-tidy/checks/modernize-use-delete.rst
test/clang-tidy/modernize-use-delete.cpp
Index: test/clang-tidy/modernize-use-delete.cpp
===================================================================
--- /dev/null
+++ test/clang-tidy/modernize-use-delete.cpp
@@ -0,0 +1,122 @@
+// RUN: %check_clang_tidy %s modernize-use-delete %t
+
+struct PositivePrivate {
+private:
+ PositivePrivate();
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositivePrivate() = delete;
+ PositivePrivate(const PositivePrivate &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositivePrivate(const PositivePrivate &) = delete;
+ PositivePrivate &operator=(const PositivePrivate &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositivePrivate &operator=(const PositivePrivate &) = delete;
+ PositivePrivate(PositivePrivate &&);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositivePrivate(PositivePrivate &&) = delete;
+ PositivePrivate &operator=(PositivePrivate &&);
+ // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositivePrivate &operator=(PositivePrivate &&) = delete;
+ ~PositivePrivate();
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: ~PositivePrivate() = delete;
+};
+
+struct NegativePublic {
+ NegativePublic(const NegativePublic &);
+};
+
+struct NegativeProtected {
+protected:
+ NegativeProtected(const NegativeProtected &);
+};
+
+struct PositiveInlineMember {
+ int foo() { return 0; }
+
+private:
+ PositiveInlineMember(const PositiveInlineMember &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositiveInlineMember(const PositiveInlineMember &) = delete;
+};
+
+struct PositiveOutOfLineMember {
+ int foo();
+
+private:
+ PositiveOutOfLineMember(const PositiveOutOfLineMember &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositiveOutOfLineMember(const PositiveOutOfLineMember &) = delete;
+};
+
+int PositiveOutOfLineMember::foo() { return 0; }
+
+struct PositiveAbstractMember {
+ virtual int foo() = 0;
+
+private:
+ PositiveAbstractMember(const PositiveAbstractMember &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositiveAbstractMember(const PositiveAbstractMember &) = delete;
+};
+
+struct NegativeMemberNotImpl {
+ int foo();
+
+private:
+ NegativeMemberNotImpl(const NegativeMemberNotImpl &);
+};
+
+struct NegativeStaticMemberNotImpl {
+ static int foo();
+
+private:
+ NegativeStaticMemberNotImpl(const NegativeStaticMemberNotImpl &);
+};
+
+struct NegativeInline {
+private:
+ NegativeInline(const NegativeInline &) {}
+};
+
+struct NegativeOutOfLine {
+private:
+ NegativeOutOfLine(const NegativeOutOfLine &);
+};
+
+NegativeOutOfLine::NegativeOutOfLine(const NegativeOutOfLine &) {}
+
+struct NegativeConstructNotImpl {
+ NegativeConstructNotImpl();
+
+private:
+ NegativeConstructNotImpl(const NegativeConstructNotImpl &);
+};
+
+struct PositiveDefaultedConstruct {
+ PositiveDefaultedConstruct() = default;
+
+private:
+ PositiveDefaultedConstruct(const PositiveDefaultedConstruct &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositiveDefaultedConstruct(const PositiveDefaultedConstruct &) = delete;
+};
+
+struct PositiveDeletedConstruct {
+ PositiveDeletedConstruct() = delete;
+
+private:
+ PositiveDeletedConstruct(const PositiveDeletedConstruct &);
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use '= delete' to prevent a default special member function [modernize-use-delete]
+ // CHECK-FIXES: PositiveDeletedConstruct(const PositiveDeletedConstruct &) = delete;
+};
+
+struct NegativeDefaulted {
+private:
+ NegativeDefaulted(const NegativeDefaulted &) = default;
+};
+
+struct NegativeDeleted {
+private:
+ NegativeDeleted(const NegativeDeleted &) = delete;
+};
Index: docs/clang-tidy/checks/modernize-use-delete.rst
===================================================================
--- /dev/null
+++ docs/clang-tidy/checks/modernize-use-delete.rst
@@ -0,0 +1,25 @@
+.. title:: clang-tidy - modernize-use-delete
+
+modernize-use-delete
+====================
+
+This check marks unimplemented private special member functions with ``= delete``.
+To avoid false-positives, this check only applies in a translation unit that has
+all other member functions implemented.
+
+.. code-block:: c++
+
+ struct A {
+ private:
+ A(const A&);
+ A& operator=(const A&);
+ };
+
+ // becomes
+
+ struct A {
+ private:
+ A(const A&) = delete;
+ A& operator=(const A&) = delete;
+ };
+
Index: docs/clang-tidy/checks/list.rst
===================================================================
--- docs/clang-tidy/checks/list.rst
+++ docs/clang-tidy/checks/list.rst
@@ -108,6 +108,7 @@
modernize-use-auto
modernize-use-bool-literals
modernize-use-default
+ modernize-use-delete
modernize-use-emplace
modernize-use-nullptr
modernize-use-override
Index: docs/ReleaseNotes.rst
===================================================================
--- docs/ReleaseNotes.rst
+++ docs/ReleaseNotes.rst
@@ -85,6 +85,11 @@
<http://clang.llvm.org/extra/clang-tidy/checks/modernize-use-auto.html>`_ check
now warns about variable declarations that are initialized with a cast.
+- New `modernize-use-delete
+ <http://clang.llvm.org/extra/clang-tidy/checks/modernize-use-delete.html>`_ check
+
+ Adds ``= delete`` to unimplemented private special member functions.
+
- New `mpi-buffer-deref
<http://clang.llvm.org/extra/clang-tidy/checks/mpi-buffer-deref.html>`_ check
Index: clang-tidy/modernize/UseDeleteCheck.h
===================================================================
--- /dev/null
+++ clang-tidy/modernize/UseDeleteCheck.h
@@ -0,0 +1,50 @@
+//===--- UseDeleteCheck.h - clang-tidy---------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USE_DELETE_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USE_DELETE_H
+
+#include "../ClangTidy.h"
+
+namespace clang {
+namespace tidy {
+namespace modernize {
+
+/// \brief Mark unimplemented private special member functions with '= delete'.
+/// \code
+/// struct A {
+/// private:
+/// A(const A&);
+/// A& operator=(const A&);
+/// };
+/// \endcode
+/// Is converted to:
+/// \code
+/// struct A {
+/// private:
+/// A(const A&) = delete;
+/// A& operator=(const A&) = delete;
+/// };
+/// \endcode
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/modernize-use-delete.html
+class UseDeleteCheck : public ClangTidyCheck {
+public:
+ UseDeleteCheck(StringRef Name, ClangTidyContext *Context)
+ : ClangTidyCheck(Name, Context) {}
+ void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+ void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace modernize
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USE_DELETE_H
Index: clang-tidy/modernize/UseDeleteCheck.cpp
===================================================================
--- /dev/null
+++ clang-tidy/modernize/UseDeleteCheck.cpp
@@ -0,0 +1,56 @@
+//===--- UseDeleteCheck.cpp - clang-tidy-----------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "UseDeleteCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace modernize {
+
+static const char SpecialFunction[] = "SpecialFunction";
+
+void UseDeleteCheck::registerMatchers(MatchFinder *Finder) {
+ auto PrivateSpecialFn = cxxMethodDecl(
+ isPrivate(),
+ anyOf(cxxConstructorDecl(anyOf(isDefaultConstructor(),
+ isCopyConstructor(), isMoveConstructor())),
+ cxxMethodDecl(
+ anyOf(isCopyAssignmentOperator(), isMoveAssignmentOperator())),
+ cxxDestructorDecl()));
+
+ Finder->addMatcher(
+ cxxMethodDecl(
+ PrivateSpecialFn,
+ unless(anyOf(hasBody(stmt()), isDefaulted(), isDeleted())),
+ hasParent(cxxRecordDecl(unless(hasMethod(
+ unless(anyOf(PrivateSpecialFn, hasBody(stmt()), isPure(),
+ isDefaulted(), isDeleted())))))))
+ .bind(SpecialFunction),
+ this);
+}
+
+void UseDeleteCheck::check(const MatchFinder::MatchResult &Result) {
+ const auto *SpecialFunction =
+ Result.Nodes.getNodeAs<CXXMethodDecl>("SpecialFunction");
+
+ SourceLocation EndLoc = Lexer::getLocForEndOfToken(
+ SpecialFunction->getLocEnd(), 0, *Result.SourceManager, getLangOpts());
+ diag(SpecialFunction->getLocation(),
+ "use '= delete' to prevent a default special member function")
+ << FixItHint::CreateInsertion(EndLoc, " = delete");
+}
+
+} // namespace modernize
+} // namespace tidy
+} // namespace clang
Index: clang-tidy/modernize/ModernizeTidyModule.cpp
===================================================================
--- clang-tidy/modernize/ModernizeTidyModule.cpp
+++ clang-tidy/modernize/ModernizeTidyModule.cpp
@@ -23,6 +23,7 @@
#include "UseAutoCheck.h"
#include "UseBoolLiteralsCheck.h"
#include "UseDefaultCheck.h"
+#include "UseDeleteCheck.h"
#include "UseEmplaceCheck.h"
#include "UseNullptrCheck.h"
#include "UseOverrideCheck.h"
@@ -56,6 +57,7 @@
CheckFactories.registerCheck<UseBoolLiteralsCheck>(
"modernize-use-bool-literals");
CheckFactories.registerCheck<UseDefaultCheck>("modernize-use-default");
+ CheckFactories.registerCheck<UseDeleteCheck>("modernize-use-delete");
CheckFactories.registerCheck<UseEmplaceCheck>("modernize-use-emplace");
CheckFactories.registerCheck<UseNullptrCheck>("modernize-use-nullptr");
CheckFactories.registerCheck<UseOverrideCheck>("modernize-use-override");
Index: clang-tidy/modernize/CMakeLists.txt
===================================================================
--- clang-tidy/modernize/CMakeLists.txt
+++ clang-tidy/modernize/CMakeLists.txt
@@ -17,6 +17,7 @@
UseAutoCheck.cpp
UseBoolLiteralsCheck.cpp
UseDefaultCheck.cpp
+ UseDeleteCheck.cpp
UseEmplaceCheck.cpp
UseNullptrCheck.cpp
UseOverrideCheck.cpp
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