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//===--- TemplateVirtualMemberFunctionCheck.cpp - clang-tidy --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "TemplateVirtualMemberFunctionCheck.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang::tidy::portability {
namespace {
AST_MATCHER(CXXMethodDecl, isUsed) { return Node.isUsed(); }
} // namespace
void TemplateVirtualMemberFunctionCheck::registerMatchers(MatchFinder *Finder) {
Finder->addMatcher(
cxxMethodDecl(isVirtual(),
ofClass(classTemplateSpecializationDecl(
unless(isExplicitTemplateSpecialization()))
.bind("specialization")),
unless(isUsed()), unless(isPure()),
unless(cxxDestructorDecl(isDefaulted())))
.bind("method"),
this);
}
void TemplateVirtualMemberFunctionCheck::check(
const MatchFinder::MatchResult &Result) {
const auto *ImplicitSpecialization =
Result.Nodes.getNodeAs<ClassTemplateSpecializationDecl>("specialization");
const auto *MethodDecl = Result.Nodes.getNodeAs<CXXMethodDecl>("method");
diag(MethodDecl->getLocation(),
"unspecified virtual member function instantiation; the virtual "
"member function is not instantiated but it might be with a "
"different compiler");
diag(ImplicitSpecialization->getPointOfInstantiation(),
"template instantiated here", DiagnosticIDs::Note);
}
} // namespace clang::tidy::portability
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