lib/ARCMigrate/TransAutoreleasePool.cpp

11 // Calls to NSAutoreleasePools will be rewritten as an @autorelease scope.
22 // - There is not a corresponding -release/-drain in the same scope
24 // - There is a variable that is declared inside the intended @autorelease scope
97         PoolScope &scope = *scpI;
98         clearRefsIn(*scope.Begin, info.Refs);
99         clearRefsIn(*scope.End, info.Refs);
100         clearRefsIn(scope.Releases.begin(), scope.Releases.end(), info.Refs);
121         PoolScope &scope = *scpI;
122         clearUnavailableDiags(*scope.Begin);
123         clearUnavailableDiags(*scope.End);
124         if (scope.IsFollowedBySimpleReturnStmt) {
125           // Include the return in the scope.
126           Pass.TA.replaceStmt(*scope.Begin, "@autoreleasepool {");
127           Pass.TA.removeStmt(*scope.End);
128           Stmt::child_iterator retI = scope.End;
137               SourceRange(scope.getIndentedRange().getBegin(),
139               scope.CompoundParent->getBeginLoc());
141           Pass.TA.replaceStmt(*scope.Begin, "@autoreleasepool {");
142           Pass.TA.replaceStmt(*scope.End, "}");
143           Pass.TA.increaseIndentation(scope.getIndentedRange(),
144                                       scope.CompoundParent->getBeginLoc());
152         PoolScope &scope = *scpI;
154                relI = scope.Releases.begin(),
155                relE = scope.Releases.end(); relI != relE; ++relI) {
207         PoolScope &scope = Scopes.back();
208         scope.End = I;
209         handlePoolScope(scope, S);
254     NameReferenceChecker(ASTContext &ctx, PoolScope &scope,
259       ScopeRange = SourceRange((*scope.Begin)->getBeginLoc(),
260                                (*scope.End)->getBeginLoc());
296   void handlePoolScope(PoolScope &scope, CompoundStmt *compoundS) {
297     // Check that all names declared inside the scope are not used
298     // outside the scope.
302       Stmt::child_iterator SI = scope.End, SE = compoundS->body_end();
304       // Check if the autoreleasepool scope is followed by a simple return
305       // statement, in which case we will include the return in the scope.
311             scope.IsFollowedBySimpleReturnStmt = true;
312             ++SI; // the return will be included in scope, don't check it.
316         nameUsedOutsideScope = !NameReferenceChecker(Pass.Ctx, scope,
324       // declared inside the pool scope are used outside of it.
328             "NSAutoreleasePool scope that it was declared in", referenceLoc);
330         Pass.TA.reportNote("intended @autoreleasepool scope begins here",
331                            (*scope.Begin)->getBeginLoc());
332         Pass.TA.reportNote("intended @autoreleasepool scope ends here",
333                            (*scope.End)->getBeginLoc());
340       ReleaseCollector releaseColl(scope.PoolVar, scope.Releases);
341       Stmt::child_iterator I = scope.Begin;
343       for (; I != scope.End; ++I)
347     PoolVars[scope.PoolVar].Scopes.push_back(scope);