tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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NeedsNoVTableTypeChecker.cpp (1381B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #include "NeedsNoVTableTypeChecker.h"
      6 #include "CustomMatchers.h"
      7 
      8 void NeedsNoVTableTypeChecker::registerMatchers(MatchFinder *AstMatcher) {
      9  AstMatcher->addMatcher(
     10      classTemplateSpecializationDecl(
     11          allOf(hasAnyTemplateArgument(refersToType(hasVTable())),
     12                hasNeedsNoVTableTypeAttr()))
     13          .bind("node"),
     14      this);
     15 }
     16 
     17 void NeedsNoVTableTypeChecker::check(const MatchFinder::MatchResult &Result) {
     18  const ClassTemplateSpecializationDecl *Specialization =
     19      Result.Nodes.getNodeAs<ClassTemplateSpecializationDecl>("node");
     20 
     21  // Get the offending template argument
     22  QualType Offender;
     23  const TemplateArgumentList &Args =
     24      Specialization->getTemplateInstantiationArgs();
     25  for (unsigned i = 0; i < Args.size(); ++i) {
     26    Offender = Args[i].getAsType();
     27    if (typeHasVTable(Offender)) {
     28      break;
     29    }
     30  }
     31 
     32  diag(Specialization->getBeginLoc(),
     33       "%0 cannot be instantiated because %1 has a VTable",
     34       DiagnosticIDs::Error)
     35      << Specialization << Offender;
     36  diag(Specialization->getPointOfInstantiation(),
     37       "bad instantiation of %0 requested here", DiagnosticIDs::Note)
     38      << Specialization;
     39 }