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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /compilerplugins/clang/staticaccess.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compilerplugins/clang/staticaccess.cxx')
-rw-r--r--compilerplugins/clang/staticaccess.cxx100
1 files changed, 100 insertions, 0 deletions
diff --git a/compilerplugins/clang/staticaccess.cxx b/compilerplugins/clang/staticaccess.cxx
new file mode 100644
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+++ b/compilerplugins/clang/staticaccess.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef LO_CLANG_SHARED_PLUGINS
+
+#include <cassert>
+
+#include "plugin.hxx"
+
+namespace {
+
+bool isStatic(ValueDecl const * decl, bool * memberEnumerator) {
+ assert(memberEnumerator != nullptr);
+ // clang::MemberExpr::getMemberDecl is documented to return either a
+ // FieldDecl or a CXXMethodDecl, but can apparently also return a VarDecl
+ // (as C++ static data members are modeled by VarDecl, not FieldDecl) or an
+ // EnumConstantDecl (struct { enum {E}; } s; s.E;), see
+ // <https://reviews.llvm.org/D23907> "Fix documentation of
+ // MemberExpr::getMemberDecl":
+ auto fd = dyn_cast<FieldDecl>(decl);
+ if (fd != nullptr) {
+ *memberEnumerator = false;
+ return false;
+ }
+ auto vd = dyn_cast<VarDecl>(decl);
+ if (vd != nullptr) {
+ *memberEnumerator = false;
+ assert(vd->isStaticDataMember());
+ return true;
+ }
+ auto md = dyn_cast<CXXMethodDecl>(decl);
+ if (md != nullptr) {
+ *memberEnumerator = false;
+ return md->isStatic();
+ }
+ assert(dyn_cast<EnumConstantDecl>(decl) != nullptr);
+ *memberEnumerator = true;
+ return true;
+}
+
+class StaticAccess:
+ public loplugin::FilteringPlugin<StaticAccess>
+{
+public:
+ explicit StaticAccess(loplugin::InstantiationData const & data):
+ FilteringPlugin(data) {}
+
+ void run() override
+ { TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
+
+ bool VisitMemberExpr(MemberExpr const * expr);
+};
+
+bool StaticAccess::VisitMemberExpr(MemberExpr const * expr) {
+ if (ignoreLocation(expr)) {
+ return true;
+ }
+ auto decl = expr->getMemberDecl();
+ bool me;
+ if (!isStatic(decl, &me)) {
+ return true;
+ }
+ auto const loc = expr->getExprLoc();
+ if (compiler.getSourceManager().isMacroBodyExpansion(loc)) {
+ auto const name = Lexer::getImmediateMacroName(
+ loc, compiler.getSourceManager(), compiler.getLangOpts());
+ if (name == "BEGIN_COM_MAP" || name == "DEFAULT_REFLECTION_HANDLER") {
+ // .../VC/Tools/MSVC/14.14.26428/atlmfc/include\atlcom.h(2226,10): note: expanded from
+ // macro 'BEGIN_COM_MAP'
+ // return this->InternalQueryInterface(this, _GetEntries(), iid, ppvObject);
+ // ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ // .../VC/Tools/MSVC/14.14.26428/atlmfc/include\atlwin.h(2890,5): note: expanded from
+ // macro 'DEFAULT_REFLECTION_HANDLER'
+ // if(this->DefaultReflectionHandler(hWnd, uMsg, wParam, lParam, lResult))
+ // ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ return true;
+ }
+ }
+ report(
+ DiagnosticsEngine::Warning,
+ ("accessing %select{static class member|member enumerator}0 through"
+ " class member access syntax, use a qualified name like '%1' instead"),
+ expr->getBeginLoc())
+ << me << decl->getQualifiedNameAsString() << expr->getSourceRange();
+ return true;
+}
+
+loplugin::Plugin::Registration<StaticAccess> staticaccess("staticaccess");
+
+} // namespace
+
+#endif // LO_CLANG_SHARED_PLUGINS
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */