build/clang-plugin/NonMemMovableMemberChecker.cpp

   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 "NonMemMovableMemberChecker.h"
   6 #include "CustomMatchers.h"
   7
   8 MemMoveAnnotation NonMemMovable = MemMoveAnnotation();
   9
  10 void NonMemMovableMemberChecker::registerMatchers(MatchFinder *AstMatcher) {
  11   // Handle non-mem-movable members
  12   AstMatcher->addMatcher(cxxRecordDecl(needsMemMovableMembers()).bind("decl"),
  13                          this);
  14 }
  15
  16 void NonMemMovableMemberChecker::check(const MatchFinder::MatchResult &Result) {
  17   const char *Error =
  18       "class %0 cannot have non-memmovable member %1 of type %2";
  19
  20   // Get the specialization
  21   const CXXRecordDecl *Declaration =
  22       Result.Nodes.getNodeAs<CXXRecordDecl>("decl");
  23
  24   // Report an error for every member which is non-memmovable
  25   for (const FieldDecl *Field : Declaration->fields()) {
  26     QualType Type = Field->getType();
  27     if (NonMemMovable.hasEffectiveAnnotation(Type)) {
  28       diag(Field->getLocation(), Error, DiagnosticIDs::Error)
  29           << Declaration << Field << Type;
  30       NonMemMovable.dumpAnnotationReason(*this, Type,
  31                                          Declaration->getLocation());
  32     }
  33   }
  34 }