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/* 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/. */
#include "ParamTraitsEnumChecker.h"
#include "CustomMatchers.h"
void ParamTraitsEnumChecker::registerMatchers(MatchFinder *AstMatcher) {
AstMatcher->addMatcher(
classTemplateSpecializationDecl(hasName("ParamTraits")).bind("decl"),
this);
}
void ParamTraitsEnumChecker::check(const MatchFinder::MatchResult &Result) {
const ClassTemplateSpecializationDecl *Decl =
Result.Nodes.getNodeAs<ClassTemplateSpecializationDecl>("decl");
for (auto &Inner : Decl->decls()) {
if (auto *Def = dyn_cast<TypedefDecl>(Inner)) {
QualType UnderlyingType = Def->getUnderlyingType();
QualType CanonicalType = UnderlyingType.getCanonicalType();
const clang::Type *TypePtr = CanonicalType.getTypePtrOrNull();
if (!TypePtr) {
return;
}
if (TypePtr->isEnumeralType()) {
diag(Decl->getBeginLoc(),
"Custom ParamTraits implementation for an enum type",
DiagnosticIDs::Error);
diag(Decl->getBeginLoc(),
"Please use a helper class for example ContiguousEnumSerializer",
DiagnosticIDs::Note);
}
}
}
}