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35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "KnownLiveChecker.h"
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#include "CustomMatchers.h"
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void KnownLiveChecker::registerMatchers(MatchFinder *AstMatcher) {
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// Note that this cannot catch mutations after pass-by-reference, and thus no
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// error for cycle collection macros.
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auto KnownLiveLHS = hasLHS(memberExpr(hasKnownLiveAnnotation()).bind("lhs"));
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auto ForGeneralFunctions = forFunction(
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functionDecl(unless(anyOf(cxxConstructorDecl(), cxxDestructorDecl())))
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.bind("func"));
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auto Matcher =
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allOf(isAssignmentOperator(), KnownLiveLHS, ForGeneralFunctions);
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AstMatcher->addMatcher(binaryOperator(Matcher), this);
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AstMatcher->addMatcher(cxxOperatorCallExpr(Matcher), this);
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}
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void KnownLiveChecker::check(const MatchFinder::MatchResult &Result) {
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const char *Error = "MOZ_KNOWN_LIVE members can only be modified by "
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"constructors and destructors";
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if (const MemberExpr *Expr = Result.Nodes.getNodeAs<MemberExpr>("lhs")) {
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diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error);
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}
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if (const CXXOperatorCallExpr *Expr =
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Result.Nodes.getNodeAs<CXXOperatorCallExpr>("lhs")) {
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diag(Expr->getBeginLoc(), Error, DiagnosticIDs::Error);
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}
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}
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